CN102785443B - Composite material bumper with buffer laminate composite layer structure and preparation method thereof - Google Patents

Abstract

The invention discloses a composite material bumper with a layer structure and a composite buffer laminate and a preparation method thereof, wherein the bumper comprises the buffer laminate and a fiber reinforced composite laminate; or comprises a buffer laminate, a fiber reinforced composite laminate and a panel; the buffer layer plate is arranged in the fiber reinforced composite layer plate, and the panel is arranged outside the buffer layer plate and the fiber reinforced composite layer plate. The fiber reinforced composite laminate is composed of a plurality of fiber reinforced composite material layers and a plurality of resin matrixes, wherein the fiber reinforced composite material layers are obtained by layering, and the resin matrixes are coated on fibers of the fiber reinforced composite material layers. The volume fraction of the fiber reinforced composite material in the bumper is 20-80%. The invention adopts a layering gluing process-a pressure forming process to prepare the bumper. The bumper utilizes the outstanding designability of the fiber composite material, reduces the weight of the bumper, improves the collision safety of various vehicles, and protects pedestrians and passengers.

Description

A layer structure composite material bumper with cushioning laminates and its preparation method

technical field

The invention relates to a bumper used in the automobile industry, more particularly, to a bumper with a layer structure composite material compounded with buffer laminates. The preparation of the bumper adopts a layer coating process - a pressure forming process.

Background technique

The automotive industry has higher and higher requirements for bumper safety, energy saving and environmental protection, and composite materials have high specific stiffness, high specific strength, high toughness, impact resistance, machinability, high fatigue resistance, high damage tolerance performance, Corrosion resistance and other advantages can not only meet the safety performance requirements of automobiles, but also meet the lightweight requirements of automobiles.

Contents of the invention

The purpose of the present invention is to provide a layer structure composite material bumper with cushioning laminates. The bumper can be manufactured in different types according to the collision performance requirements and cost requirements of different models by utilizing the outstanding designability of fiber reinforced composite materials. Bumpers made of high-impact composite fiber materials improve the collision safety of various vehicles and protect pedestrians and passengers.

The present invention relates to a layer structure composite bumper with buffer laminates, which comprises buffer laminates and fiber reinforced composite laminates, and the buffer laminates are placed in multi-layer fiber reinforced composite laminates.

A kind of layer structure composite material bumper with cushioning laminate composite of the present invention, it comprises buffering laminate, fiber-reinforced composite laminate, panel, buffering laminate is placed in multi-layer fiber-reinforced composite laminate, panel is placed in cushioning Laminates with fiber reinforced composite laminates for the exterior.

The fiber-reinforced composite laminate in the layer structure composite material bumper with buffer laminates is composed of multiple layers of fiber-reinforced composite material and multiple layers of resin matrix, and the multi-layer fiber-reinforced composite material layer is obtained by lamination, The resin matrix is coated on the fibers of the fiber-reinforced composite material layer;

Specifically, the bumper includes an upper layer of fiber reinforced composite material layer (10), a lower layer of fiber reinforced composite material layer (20), and a fiber reinforced composite material layer from the upper layer (10) to the lower layer of fiber reinforced composite material layer 20. The first resin matrix (201), the first fiber-reinforced composite material layer (101), the second resin matrix (202), the second fiber-reinforced composite material layer (102), and the third resin matrix (203) are arranged in order among them. ), ..., the third fiber reinforced composite material layer (103), the fourth resin matrix (204), the fourth fiber reinforced composite material layer (104) and the fifth resin matrix (205).

Specifically, the bumper includes an upper layer of fiber reinforced composite material layer (10), a lower layer of fiber reinforced composite material layer (20), and a fiber reinforced composite material layer from the upper layer (10) to the lower layer of fiber reinforced composite material layer 20. Arranged in sequence are the first resin matrix (201), the first fiber reinforced composite material layer (101), the first laminated fiber reinforced composite material layer (301), the second resin matrix (202), the second fiber reinforced Composite material layer (102), second laminated fiber-reinforced composite material layer (302), third laminated fiber-reinforced composite material layer (303), third resin matrix (203), ..., third fiber-reinforced composite material layer (103), fourth resin matrix (204), fourth fiber reinforced composite material layer (104), fourth laminated fiber reinforced composite material layer (304), fifth laminated fiber reinforced composite material layer (305) and A fifth resin matrix (205).

Specifically, the upper fiber-reinforced composite material layer (10), the second fiber-reinforced composite material layer (102), the second laminated fiber-reinforced composite material layer (302), and the third laminated fiber-reinforced composite material layer in the bumper The material layer (303), the fourth fiber-reinforced composite material layer (104), the fourth laminated fiber-reinforced composite material layer (304) and the fifth laminated fiber-reinforced composite material layer (305) adopt A-type fiber material fabric; A fiber-reinforced composite material layer (101), the first laminated fiber-reinforced composite material layer (301), the third fiber-reinforced composite material layer (103) and the lower layer of fiber-reinforced composite material layer (20) adopt B-type fiber material fabric .

Specifically, the upper fiber reinforced composite material layer (10), the lower layer fiber reinforced composite material layer (20), the first fiber reinforced composite material layer (101), the second fiber reinforced composite material layer ( 102), the third fiber reinforced composite material layer (103), the fourth fiber reinforced composite material layer (104), the first laminated fiber reinforced composite material layer (301), the second laminated fiber reinforced composite material layer (302) , the third laminated fiber-reinforced composite material layer (303), the fourth laminated fiber-reinforced composite material layer (304) and the fifth laminated fiber-reinforced composite material layer (305) adopt the same or different fiber material fabrics; The fiber bundles (10A) in the warp direction and the fiber bundles (10B) in the weft direction used in the fiber material fabric are the same fiber bundles or different fiber bundles.

The volume fraction of the fiber-reinforced composite material layer in the layer structure composite material bumper with cushioning laminates is 20%-80%. The thermosetting resin matrix includes a curing agent, and there are 3-45 parts by weight of the curing agent in 100 parts by weight of the resin matrix.

A layer structure composite material bumper with buffer laminates, wherein the upper and lower panel layers are one or more than one combination of steel plates, aluminum plates, or titanium alloy plates and similar metal plates. The upper and lower panel layers are thermoplastic plates. The upper and lower panel layers are one or a combination of ABS boards, PVC boards, PMMA boards, or PC boards and other similar plastic boards. The upper and lower panel layers are fiber-reinforced resin sheets, rubber sheets, foam boards, fiber-reinforced resin matrix sheets, honeycomb laminates or composite boards.

A layer structure composite material bumper with buffer laminates, wherein the buffer laminates are metal laminates. The buffer layer is one or a combination of steel plates, aluminum plates, or titanium alloy plates and other similar metal plates. The buffer layer board is a thermoplastic plastic board. The buffer layer board is one or a combination of ABS boards, PVC boards, PMMA boards, or PC boards and other similar plastic boards. The buffer layer board is a fiber reinforced resin sheet, a rubber board, a foam board, a honeycomb layer board or a composite board.

The advantages of the composite bumper of the present invention are:

(1) A buffer layer is added in the middle of the bumper to improve the impact resistance of the bumper.

(2) The upper and lower panel layers are designed for the bumper of the present invention, which can improve the energy absorption performance of the hybrid fiber composite layer when subjected to impact force.

(3) The fiber-reinforced composite laminate in the prepared bumper adopts a hybrid form of inter-layer spacing distribution and intra-layer spacing distribution, which makes full use of the designability of the mechanical properties of fiber-reinforced composite materials and the energy absorption performance of the buffer layer. It can meet the crash performance requirements of different models.

(4) Manufacturing the bumper The bumper obtained by lamination, gluing, and pressure forming process is an integrally formed structural part. The composite material system bumper is made into a composite material system integrally formed by the layer forming process, which has low production cost, light weight and high corrosion resistance.

(5) Utilizing the characteristics of the fiber composite material can improve the anti-collision performance of the automobile equipped with the bumper of the present invention.

Description of drawings

Figure 1 is a schematic diagram of the external structure of the bumper.

Fig. 2 is a schematic cross-sectional view of a bumper A-A with buffer laminates and fiber-reinforced composite laminates of the present invention.

Fig. 3 is a schematic cross-sectional structure diagram of a bumper with a buffer laminate, a fiber-reinforced composite laminate and an upper panel according to the present invention.

Fig. 4 is a schematic cross-sectional structure diagram of a bumper with a buffer laminate, a fiber-reinforced composite laminate and a lower panel of the present invention.

Fig. 5 is a schematic cross-sectional structure diagram of a bumper with buffer laminates, fiber-reinforced composite laminates, and upper and lower panels according to the present invention.

Fig. 6 is a schematic cross-sectional structure diagram of a bumper with multi-layer buffer laminates and multi-layer fiber-reinforced composite laminates according to the present invention.

Fig. 7 is a schematic cross-sectional structure diagram of the fiber-reinforced composite laminate in the bumper of the present invention.

Fig. 7A is another schematic cross-sectional structural view of the fiber-reinforced composite laminate in the bumper of the present invention.

Fig. 8 is a schematic cross-sectional view of a bumper of the present invention having a fiber-reinforced composite laminate of interlayer hybrid structure.

Fig. 9 is a schematic cross-sectional view of a bumper having a fiber-reinforced composite laminate of a laminated structure mixed in layers according to the present invention.

Fig. 10 is a schematic cross-sectional view of a bumper of the present invention having a fiber-reinforced composite laminate with a layered structure mixed between layers.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings.

The structural appearance of the applied existing bumper is shown in Figure 1, and the appearance and structure of the bumper can be changed according to the needs of the vehicle model. A fiber-reinforced composite bumper designed by the present invention is improved from the layer distribution structure of fiber-reinforced composite materials in the bumper material system, which facilitates the designability of the bumper.

The hybrid fiber composite bumper of the present invention has a thickness of 1 mm to 20 mm; the bumper can be applied in a temperature environment of -50°C to 130°C.

Referring to Fig. 2, a bumper of the present invention has a composite layer structure composite material with buffer laminates, the bumper includes A buffer laminate 50, A fiber-reinforced composite laminate 601 and B fiber-reinforced composite laminate 602, The A buffer ply 50 is placed between the A fiber reinforced composite ply 601 and the B fiber reinforced composite ply 602 .

Referring to Fig. 3, a bumper of the present invention has a composite layer structure composite material with cushioning laminates, the bumper includes A cushioning laminate 50, A fiber-reinforced composite laminate 601, B fiber-reinforced composite laminate 602 and The upper panel 40 , the A buffer laminate 50 is placed between the A fiber reinforced composite laminate 601 and the B fiber reinforced composite laminate 602 , and the upper panel 40 is placed above the A fiber reinforced composite laminate 601 .

Referring to Fig. 4, a kind of layer structure composite material bumper with cushioning ply composite of the present invention, this bumper comprises A cushioning ply 50, A fiber-reinforced composite ply 601, B fiber-reinforced composite ply 602 and For the lower panel 30 , the A buffer laminate 50 is placed between the A fiber reinforced composite laminate 601 and the B fiber reinforced composite laminate 602 , and the lower panel 30 is placed below the B fiber reinforced composite laminate 601 .

Referring to Fig. 5, a bumper of the present invention has a composite layer structure composite material with cushioning laminates, the bumper includes A buffering laminate 50, A fiber reinforced composite laminate 601, B fiber reinforced composite laminate 602, The upper panel 40 and the lower panel 30, the A buffer laminate 50 is placed between the A fiber-reinforced composite laminate 601 and the B fiber-reinforced composite laminate 102, the upper panel 40 is placed above the A fiber-reinforced composite laminate 601, and the lower panel 30 placed below the B fiber reinforced composite ply 601.

Referring to Fig. 6, a bumper of the present invention has a composite layer structure composite material with buffer laminates, the bumper includes A buffer laminate 50, B buffer laminate 51, A fiber-reinforced composite laminate 601 and B fiber Reinforced composite laminate 602 , A buffer laminate 50 is placed between A fiber reinforced composite laminate 601 and B fiber reinforced composite laminate 602 , B buffer laminate 51 is placed above A fiber reinforced composite laminate 601 . According to different positions where the buffer ply is placed, the buffer ply may also be placed under the B fiber reinforced composite ply 602 . In the same way, it can be obtained that the buffer layer is one or more than one layer.

In the present invention, the thickness of the panel is 0.01-5mm, and the panel is a metal plate, a thermoplastic plate, a rubber plate, a foam plate, a honeycomb plate or a composite plate;

The panel is one or a combination of similar metal plates such as steel plate, aluminum plate, or titanium alloy plate;

The panel is one or a combination of ABS boards, PVC boards, PMMA boards, or PC boards and other similar plastic boards.

In the present invention, the thickness of the buffer layer is 0.01-5mm, and the buffer layer is a metal plate, a thermoplastic plate, a rubber plate, a foam plate, a honeycomb plate or a composite plate;

The buffer layer is one or more combinations of steel plates, aluminum plates, or titanium alloy plates and other similar metal plates;

The buffer layer board is one or a combination of ABS boards, PVC boards, PMMA boards, or PC boards and other similar plastic boards.

The fiber-reinforced composite laminate in the present invention is composed of multiple layers of fiber-reinforced material layers and multiple layers of resin matrix, the fiber-reinforced material layer is obtained by lamination, and the resin matrix is coated on the fiber-reinforced material layer superior.

In the present invention, the volume fraction of the fiber reinforced material in the bumper is 20%-80%.

In the present invention, the cured bumper forms a multi-layer laminate of fiber reinforced materials; adjacent fiber reinforced material layers can be the same fiber material or different fiber materials; in the same fiber reinforced material layer, The fibers can be the same fiber material or different fiber materials.

If the same fiber material is used for lamination (as shown in Figure 7), a bumper of the same fiber reinforced material is obtained.

If the mixed laying of different fiber reinforcement materials can realize the mixing of adjacent fiber reinforcement material layers (as shown in FIG. 8 ), then a bumper with fiber reinforcement materials mixed between layers is produced.

If the fibers used in the same layer of fiber reinforcement are of different fiber materials (as shown in Figure 9), a bumper with intermingled fiber reinforcement within the layer is produced.

If the fiber materials of adjacent fiber reinforcement layers are different, and the fibers in the same fiber reinforcement layer are also different (as shown in Figure 10), a bumper with fiber reinforcement mixed within a layer and between layers is produced.

(1) Fiber material

When the fiber reinforced material layer is laid, the adjacent fiber reinforced material layer is one or a combination of fiber fabrics, fiber braids, fiber woven fabrics, fiber knitted fabrics, and fiber mats.

The fibers in the fiber reinforced material layer are one or a combination of chopped fibers, long fibers or continuous fibers.

The fibers in the fiber reinforced material layer are one of metal fibers, inorganic fibers, synthetic fibers or plant fibers or a combination of more than one fiber forms.

The fiber in the fiber reinforced material layer can be polyethylene fiber, carbon fiber, aramid fiber, PBO fiber, M5 fiber, liquid crystal fiber, carbon nanotube fiber, basalt fiber, glass fiber, polypropylene fiber, polyester fiber, spandex fiber, One or more of acrylic fiber, nylon fiber, vinylon fiber, polyvinyl chloride fiber, hemp, sisal fiber, flax fiber, bamboo fiber, jute fiber and other similar metal fibers, inorganic fibers, synthetic fibers or plant fibers Combinations of the above fiber forms.

(2) Resin material

The resin matrix is a thermosetting resin matrix or a thermoplastic resin matrix.

The thermosetting resin matrix includes a curing agent, and there are 3-45 parts by weight of the curing agent in 100 parts by weight of the thermosetting resin matrix.

The resin material in the resin matrix can be epoxy resin, vinyl resin, unsaturated resin, EPAR resin, phenolic resin, bismaleimide resin, polyimide resin, silicone rubber, ethylene propylene rubber, natural Rubber, neoprene, chlorosulfonated polyethylene rubber, nitrile rubber, fluororubber, polyurethane rubber, acrylic rubber, epichlorohydrin rubber, chlorinated polyethylene rubber, butyl rubber, isoprene rubber, styrene-butadiene rubber, fluoro Silicone, butadiene rubber, polyethylene (PE), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), polyoxymethylene (POM), polyamide (commonly known as nylon) (PA), polycarbonate Ester (PC), acrylonitrile-butadiene-styrene copolymer (ABS), polymethyl methacrylate (PMMA), acrylonitrile-styrene copolymer (A/S), polyester (PETP polyparaphenylene Butylene dicarboxylate, PBTP (polyethylene terephthalate), ethylene-octene copolymer (POE), ethylene-vinyl acetate (EVA), polysulfone (PSU), polyimide (PI ), polyphenylene sulfide (PPS), polyethersulfone (PES), polyarylate (PAR), polyamideimide (PAI), polyphenylene ester, polytetrafluoroethylene (PTFE) or one A combination of the above resin forms.

(3) curing agent material

The curing agent can be aliphatic polyamine, alicyclic polyamine, low molecular weight polyamide, modified aromatic amine, aromatic polyamine, acid anhydride, resole phenolic resin, amino resin, dicyandiamide and hydrazide One or a combination of both.

The curing agent can be T-31 modified amine, YH-82 modified amine, vinyltriamine (DETA), aminoethylpiperazine (AE), 1,2, diaminocyclohexane (DACH), Isophoronediamine (IPDA), Methylenebicyclohexaneamine 4,4' (PACM), Ethylenediamine (EDA), Diethylenetriamine (DETA), Trimethylhexamethylenediamine ( TMD), dihexyltriamine, modified hexamethylenediamine (AMINE248), hexamethylenediamine (HAD), diethylamine (DEA), trimethylhexamethylenediamine, m-phenylenediamine m-PDA MPD, m-phenylene Dimethylamine MXDA, diaminodiphenylmethane DDM HT-972DEH-50, diaminodiphenylsulfone DDS HT-976, m-aminomethylamine MAMA (NH2), benzidine, 4-chloro-o-phenylenediamine CPDA, Xylylenediamine trimer GY-51CH-2, xylylenediamine trimer derivatives, bisbenzylamino ether, cyanamide (DICY) or a combination of more than one curing agent.

Referring to Fig. 7, the fiber-reinforced composite laminate includes an upper layer of fiber-reinforced material layer 10, a lower layer of fiber-reinforced material layer 20, and an area between the upper layer of fiber-reinforced material layer 10 and the lower layer of fiber-reinforced material layer 20 Arranged in sequence are the first resin matrix 201, the first fiber reinforced material layer 101, the second resin matrix 202, the second fiber reinforced material layer 102, the third resin matrix 203, ..., the third fiber reinforced material layer 103, the first Four resin matrix 204 , fourth fiber reinforced material layer 104 and fifth resin matrix 205 .

Referring to Fig. 7A, the fiber-reinforced composite laminate includes an upper layer of fiber-reinforced material layer 10, a lower layer of fiber-reinforced material layer 20, and an area between the upper layer of fiber-reinforced material layer 10 and the lower layer of fiber-reinforced material layer 20 The sequence is the first resin matrix 201, the first fiber reinforced material layer 101, the first laminated fiber reinforced material layer 301, the second resin matrix 202, the second fiber reinforced material layer 102, the second laminated fiber reinforced material layer 302, the third laminated fiber reinforced material layer 303, the third resin matrix 203, ..., the third fiber reinforced material layer 103, the fourth resin matrix 204, the fourth fiber reinforced material layer 104, the fourth laminated fiber reinforced material layer 304 , fifth laminate fiber reinforcement layer 305 and fifth resin matrix 205 .

In the interlayer fiber-reinforced composite laminate shown in Fig. 8, the upper fiber-reinforced material layer 10, the second fiber-reinforced material layer 102 and the fourth fiber-reinforced material layer 104 adopt the same fiber material fabric (marked as type A fiber fabric); the first fiber reinforcement layer 101, the third fiber reinforcement layer 103 and the lower layer of fiber reinforcement layer 20 adopt another same fiber fabric (referred to as B-type fiber fabric). The A-type fiber material fabric and the B-type fiber material fabric are arranged at intervals on the layup, so that the fiber reinforced material layer used in the bumper has the characteristics of interlayer mixing, and the resulting bumper is a bumper with interlayer mixing. According to the structure shown in FIG. 5 , the multi-layer fiber reinforced material layer can also be laminated with more than three kinds of different fiber material fabrics.

In the fiber reinforced composite laminate shown in Figure 9, the upper layer of fiber reinforced material layer 10, the lower layer of fiber reinforced material layer 20, the first fiber reinforced material layer 101, the second fiber reinforced material layer 102, the third fiber reinforced material layer The layer 103 and the fourth layer of fiber reinforced material 104 use the same fabric of fiber material. The fiber bundles 10A in the warp direction and the fiber bundles 10B in the weft direction used in the fiber material fabric may be the same or different. The fiber material fabric obtained from different warp/weft fiber bundles realizes the intra-layer hybridization of the fiber reinforcement layer, and the bumper obtained by using such a fiber material fabric is also intra-layer hybrid.

In the fiber-reinforced composite laminate shown in Figure 10, the upper layer of fiber-reinforced material layer 10, the second fiber-reinforced material layer 102, the third fiber-reinforced material layer 103 and the lower layer of fiber-reinforced material layer 20 adopt the same fiber material fabric ( Denoted as type A fiber fabric); the first fiber reinforced material layer 101 and the fourth fiber reinforced material layer 104 adopt another same fiber material fabric (denoted as B type fiber material fabric). Type A fiber material fabrics and B type fiber material fabrics are arranged at intervals on the layup; the fiber bundles 10A in the warp direction and the fiber bundles 10B in the weft direction used in the fiber material fabrics are different, realizing the layering of fiber reinforced material layers Mixed inside. The intralayer hybridization in the fiber reinforced material layer and the interlayer hybridization of the fiber reinforced material layer make the fiber reinforced material of the bumper have the characteristics of compound hybridization within the layer, and then make a bumper with compound hybridization between the layers within the layer.

(4) Processing and forming method

To prepare the bumper structure of the present invention, a lay-up gluing process-press molding process is adopted. The number of plies of the fiber reinforcement layer is related to the thickness of the bumper. The bumper is manufactured by integral molding using a lay-up molding process.

The steps of making the bumper structure shown in Figure 1:

(A) layer coating resin;

Apply a release agent on the lower mold, spread the cut fiber reinforced material layer on the lower mold, and then coat the resin matrix, repeat laying the fiber reinforced material layer and coating the resin matrix until the A fiber reinforced composite laminate 101 is formed; Lay the buffer laminate 50 and coat the resin matrix; then lay the B fiber reinforced composite laminate 102 to reach the required thickness to obtain a preform; in the present invention, preparing the B fiber reinforced composite laminate 102 is the same as preparing the A fiber reinforced composite laminate. The process of laminate 101 is the same;

(B) demoulding to obtain a bumper.

Apply a release agent on the upper mold, cover the upper mold on the preform, and close the mold with the lower mold; apply a pressure of 0.01MPa to 20MPa, under the conditions of the pressure of 0.01MPa to 20MPa and the temperature of 5°C to 120°C , After holding the pressure for 1h-3h, the bumper is obtained by demoulding; the prepared bumper is an integrally formed structural part.

Figure 2 molding process: clean up the lower panel 30, spread an isolation film on one side of the lower panel 30, coat the resin matrix on the other side of the lower panel 30, spread the cut fiber reinforced material layer on the lower panel 30, and then coat Resin matrix, repeat laying fiber reinforced material layer and coating resin matrix until the required thickness of the bumper is reached, then laying isolation film, and finally laying air felt; paste the sealing strip around the preformed bumper to make a vacuum bag , vacuumize to 0.05MPa-0.09MPa, maintain the condition of 0.05MPa-0.09MPa for three hours, then release the mold to obtain a fiber-reinforced composite material bumper. According to this molding process, the bumper structure shown in Figure 2 is obtained. The manufacturing process of the bumper structure shown in FIG. 3 is the same as that of the bumper shown in FIG. 2 .

Figure 4 molding process: clean up the lower panel 30, spread an isolation film on one side of the lower panel 30, coat the resin matrix on the other side of the lower panel 30, spread the cut fiber reinforced composite material layer on the lower panel 30, and then coat Cover the resin matrix, repeat laying the fiber reinforced composite material layer and coating the resin matrix until the required thickness of the lower hybrid fiber composite layer 102 is reached, lay the buffer layer 50, lay the fiber reinforced composite material layer in the hybrid fiber composite layer 101, Then coat the resin matrix, repeat laying the fiber reinforced composite material layer and coating the resin matrix, until reaching the required thickness of the upper mixed fiber composite layer 101, lay the panel 40, spread the isolation film, and finally spread the air felt; the preformed insurance Stick a sealing strip around the bumper to make a vacuum bag, vacuumize to 0.05MPa-0.09MPa, keep the condition of 0.05MPa-0.09MPa for three hours, and then demould to obtain a fiber composite bumper.

Figure 5 Molding process: clean the mold, apply a release agent on the mold, spread the cut fiber reinforcement on the mold, and then coat the resin matrix, repeat laying the fiber reinforcement and coating the resin matrix until B Fiber-reinforced composite laminate 102; lay buffer laminate 50, and coat the resin matrix; then lay A fiber-reinforced composite laminate 101 (the layering method is the same as that of B fiber-reinforced composite laminate); lay buffer laminate 51, Coat the resin matrix, spread the fiber reinforcement material and coat the resin matrix again, spread the isolation film, and finally spread the air felt; paste the sealing strip around the preformed bumper to make a vacuum bag, and vacuumize to 0.05MPa ~0.09MPa, maintain the condition of 0.05MPa~0.09MPa for three hours and then demould to obtain a fiber composite bumper.

In the structure designed by the present invention, when the upper panel layer 30 is a metal laminate (such as a steel plate), the lower panel layer 40 can be a thermoplastic plate (such as a PVC plate).

In the structure designed by the present invention, when the upper panel layer 30 selects a thermoplastic plate (such as a PVC plate), then the lower panel layer 40 can select a metal laminate (such as a steel plate).

In the structure designed by the present invention, when the upper panel layer 30 is selected from a metal laminate (such as a steel plate), the lower panel layer 40 can be selected from a metal laminate (such as a steel plate).

In the structure designed by the present invention, when the upper panel layer 30 is selected from a thermoplastic board (such as a PVC board), the lower panel layer 40 can be selected from a thermoplastic board (such as a PVC board).

In the structure designed by the present invention, when the buffer layer 50 is selected from metal laminates (such as steel plates), the upper and lower panels can be selected from thermoplastic plates (such as PVC plates).

In the structure designed by the present invention, when the buffer layer 50 is selected from a thermoplastic plate (such as a PVC plate), the upper and lower panel layers can be selected from a metal laminate (such as a steel plate).

In the structure designed by the present invention, when the buffer layer 50 is selected from metal laminates (such as steel plates), the upper and lower panel layers can be selected from metal laminates (such as steel plates).

In the structure designed by the present invention, when the buffer layer 50 is selected from a thermoplastic board (such as a PVC board), the upper and lower panel layers can be selected from a thermoplastic board (such as a PVC board).

For the fiber reinforced composite material bumper designed in the present invention, the thickness of interlaced laying of the fiber reinforced material layer and the fiber reinforced material layer, and the thickness of the resin matrix coated on the fiber reinforced material layer are related to the thickness of the bumper. That is, after the required thickness of the automobile bumper is set, the fiber-reinforced composite material bumper can be obtained by controlling the number of plies of the fiber-reinforced material layer and the thickness of the resin matrix after curing.

Claims (25)

1. there is a Rotating fields composite material bumper for buffering laminate compound, it is characterized in that: this bumper comprises buffering laminate, fibre reinforced compos-ite plate; Buffering laminate is placed in multi-layer fiber to be strengthened in composite layered plate.

2. the Rotating fields composite material bumper with buffering laminate compound according to claim 1, is characterized in that: this bumper comprises buffering laminate, fibre reinforced compos-ite plate, panel; Buffering laminate is placed in multi-layer fiber and strengthens in composite layered plate, and panel is placed in the outside of buffering laminate and fibre reinforced compos-ite plate.

3. the Rotating fields composite material bumper with buffering laminate compound according to claim 1 and 2, is characterized in that: described buffering laminate is more than one deck or one deck.

4. the Rotating fields composite material bumper with buffering laminate compound according to claim 1 and 2, it is characterized in that: described fibre reinforced compos-ite plate is made up of multi-layer fiber layers of reinforcement and multi-layer resinous matrix, described multi-layer fiber layers of reinforcement is laying gained, and described resin matrix is be coated on the fiber in described fibrous reinforcing material;

This bumper includes upper layer fibrous reinforcing material (10), cutting optimal fibrous reinforcing material (20), and from upper layer fibrous reinforcing material (10) to cutting optimal fibrous reinforcing material (20) between in turn arrangement be the first resin matrix (201), first fibrous reinforcing material (101), second resin matrix (202), second fibrous reinforcing material (102), 3rd resin matrix (203), 3rd fibrous reinforcing material (103), 4th resin matrix (204), 4th fibrous reinforcing material (104) and the 5th resin matrix (205), the fibrous material used in upper layer fibrous reinforcing material (10), cutting optimal fibrous reinforcing material (20), the first fibrous reinforcing material (101), the second fibrous reinforcing material (102), the 3rd fibrous reinforcing material (103) and the 4th fibrous reinforcing material (104) is identical or different,

Or use fiber material fabric in upper layer fibrous reinforcing material (10), cutting optimal fibrous reinforcing material (20), the first fibrous reinforcing material (101), the second fibrous reinforcing material (102), the 3rd fibrous reinforcing material (103) and the 4th fibrous reinforcing material (104), the warp thread direction fibre bundle (10A) adopted in described fiber material fabric and weft direction fibre bundle (10B) are identical fibrous material or not identical fibrous material.

5. the Rotating fields composite material bumper with buffering laminate compound according to claim 1 and 2, it is characterized in that: described fibre reinforced compos-ite plate is made up of multi-layer fiber layers of reinforcement and multi-layer resinous matrix, described multi-layer fiber layers of reinforcement is laying gained, and described resin matrix is be coated on the fiber in described fibrous reinforcing material;

This bumper includes upper layer fibrous reinforcing material (10), cutting optimal fibrous reinforcing material (20), and from upper layer fibrous reinforcing material (10) to cutting optimal fibrous reinforcing material (20) between in turn arrangement be the first resin matrix (201), first fibrous reinforcing material (101), first stratified fiber layers of reinforcement (301), second resin matrix (202), second fibrous reinforcing material (102), second stratified fiber layers of reinforcement (302), triple stack layers fibrous reinforcing material (303), 3rd resin matrix (203), 3rd fibrous reinforcing material (103), 4th resin matrix (204), 4th fibrous reinforcing material (104), 4th stratified fiber layers of reinforcement (304), 5th stratified fiber layers of reinforcement (305) and the 5th resin matrix (205), upper layer fibrous reinforcing material (10), cutting optimal fibrous reinforcing material (20), first fibrous reinforcing material (101), second fibrous reinforcing material (102), 3rd fibrous reinforcing material (103), 4th fibrous reinforcing material (104), first stratified fiber layers of reinforcement (301), second stratified fiber layers of reinforcement (302), triple stack layers fibrous reinforcing material (303), 4th stratified fiber layers of reinforcement (304) and the middle fibrous material used of the 5th stratified fiber layers of reinforcement (305) are identical or different,

Or upper layer fibrous reinforcing material (10), cutting optimal fibrous reinforcing material (20), first fibrous reinforcing material (101), second fibrous reinforcing material (102), 3rd fibrous reinforcing material (103), 4th fibrous reinforcing material (104), first stratified fiber layers of reinforcement (301), second stratified fiber layers of reinforcement (302), triple stack layers fibrous reinforcing material (303), fiber material fabric is used in 4th stratified fiber layers of reinforcement (304) and the 5th stratified fiber layers of reinforcement (305), the warp thread direction fibre bundle (10A) adopted in described fiber material fabric and weft direction fibre bundle (10B) are identical fibrous material or not identical fibrous material.

6. the Rotating fields composite material bumper with buffering laminate compound according to claim 1 and 2, it is characterized in that: described fibre reinforced compos-ite plate is made up of multi-layer fiber layers of reinforcement and multi-layer resinous matrix, described multi-layer fiber layers of reinforcement is laying gained, and described resin matrix is be coated on the fiber in described fibrous reinforcing material;

Upper layer fibrous reinforcing material (10) in described bumper, the second fibrous reinforcing material (102), the second stratified fiber layers of reinforcement (302), triple stack layers fibrous reinforcing material (303), the 4th fibrous reinforcing material (104), the 4th stratified fiber layers of reinforcement (304) and the 5th stratified fiber layers of reinforcement (305) adopt category-A fiber material fabric, first fibrous reinforcing material (101), the first stratified fiber layers of reinforcement (301), the 3rd fibrous reinforcing material (103) and cutting optimal fibrous reinforcing material (20) adopt B fibers material fabric, upper layer fibrous reinforcing material (10), cutting optimal fibrous reinforcing material (20), first fibrous reinforcing material (101), second fibrous reinforcing material (102), 3rd fibrous reinforcing material (103), 4th fibrous reinforcing material (104), first stratified fiber layers of reinforcement (301), second stratified fiber layers of reinforcement (302), triple stack layers fibrous reinforcing material (303), 4th stratified fiber layers of reinforcement (304) and the middle fibrous material used of the 5th stratified fiber layers of reinforcement (305) are identical or different,

Or upper layer fibrous reinforcing material (10), cutting optimal fibrous reinforcing material (20), first fibrous reinforcing material (101), second fibrous reinforcing material (102), 3rd fibrous reinforcing material (103), 4th fibrous reinforcing material (104), first stratified fiber layers of reinforcement (301), second stratified fiber layers of reinforcement (302), triple stack layers fibrous reinforcing material (303), fiber material fabric is used in 4th stratified fiber layers of reinforcement (304) and the 5th stratified fiber layers of reinforcement (305), the warp thread direction fibre bundle (10A) adopted in described fiber material fabric and weft direction fibre bundle (10B) are identical fibrous material or not identical fibrous material.

7. the Rotating fields composite material bumper with buffering laminate compound according to claim 1 and 2, is characterized in that: the volume fraction of the fibre reinforced materials in described bumper is 20% ~ 80%.

8. preparation has the method for the Rotating fields composite material bumper of buffering laminate compound as claimed in claim 1 or 2, it is characterized in that the following step comprised:

(A) laying is coated with gum resin

Bed die is coated with remover, the fibrous reinforcing material cut is layered on bed die, then coated with resins matrix, repeat paving fibrous reinforcing material and coated with resins matrix, until reach required A fiber reinforced compound board thickness; Paste A and cushion laminate, repeat paving fibrous reinforcing material and coated with resins matrix, until reach required fiber B to strengthen composite plate thickness, paste B and cushion laminate, obtain preformed member;

(B) demoulding obtains bumper

Be coated with remover on the upper mold, mold covered on preformed member, and with bed die matched moulds; Apply 0.01MPa ~ 20MPa pressure, at 0.01MPa ~ 20MPa pressure, under temperature 5 DEG C ~ 180 DEG C conditions, after pressurize 10min ~ 3h, the demoulding obtains bumper; Obtained bumper is formed in one structural member.

9. the Rotating fields composite material bumper with buffering laminate compound according to claim 1 and 2, is characterized in that: the thickness of described panel is 0.01 ~ 5mm.

10. the Rotating fields composite material bumper with buffering laminate compound according to claim 1 and 2, is characterized in that: described panel is metallic plate, thermoplastic plate, rubber slab, fiber reinforced resin based body plate, cellular board or composite plate.

The 11. Rotating fields composite material bumper with buffering laminate compound according to claim 1 and 2, is characterized in that: described panel is one in steel plate, aluminium sheet or titanium alloy sheet or two or more combination.

The 12. Rotating fields composite material bumper with buffering laminate compound according to claim 1 and 2, is characterized in that: described panel is one in ABS plate, PVC board, PMMA plate or PC plate or two or more combination.

The 13. Rotating fields composite material bumper with buffering laminate compound according to claim 1 and 2, is characterized in that: the thickness of described buffering laminate is 0.01 ~ 5mm.

The 14. Rotating fields composite material bumper with buffering laminate compound according to claim 1 and 2, is characterized in that: described buffering laminate is metallic plate, thermoplastic plate, rubber slab, cellular board or composite plate.

The 15. Rotating fields composite material bumper with buffering laminate compound according to claim 1 and 2, is characterized in that: described buffering laminate is one in steel plate, aluminium sheet or titanium alloy sheet or two or more combination.

The 16. Rotating fields composite material bumper with buffering laminate compound according to claim 1 and 2, is characterized in that: described buffering laminate is one in ABS plate, PVC board, PMMA plate or PC plate or two or more combination.

17. Rotating fields composite material bumper with buffering laminate compound according to any one of claim 4 ~ 6, is characterized in that: in fibrous reinforcing material, fibrous material is identical or different.

18. Rotating fields composite material bumper with buffering laminate compound according to any one of claim 4 ~ 6, is characterized in that: the fibrous material of adjacent fiber layers of reinforcement is identical or different.

19. Rotating fields composite material bumper with buffering laminate compound according to any one of claim 4 ~ 6, is characterized in that: in described fibrous reinforcing material, fiber is the combination of one or more fibers forms in metallic fiber, inorfil, synthetic fibers or string.

20. Rotating fields composite material bumper with buffering laminate compound according to any one of claim 4 ~ 6, is characterized in that: in described fibrous reinforcing material, fiber is one or more combination of chopped strand, long fibre or continuous fiber.

21. Rotating fields composite material bumper with buffering laminate compound according to any one of claim 4 ~ 6, is characterized in that: described fibrous reinforcing material adjacent fibrous reinforcing material when laying is one or more the combination in fabric, fibrous braid, woven fabrics, fiber knitted fabric, fibrofelt.

22. Rotating fields composite material bumper with buffering laminate compound according to any one of claim 4 ~ 6, it is characterized in that: in described fibrous reinforcing material, fibrous material is polyethylene fibre, carbon fiber, aramid fiber, pbo fiber, M5 fiber, carbon nano-tube fibre, basalt fibre, glass fibre, polypropylene fiber, polyster fibre, spandex fibre, acrylic fiber, nylon fiber, vinylon fibre, polyvinyl chloride fibre fiber, china-hemp fibers, sisal fiber, flax fiber, bamboo fibre, tossa, steel fibre, aluminum fiber, the combination of a kind of or two or more fibers form in copper fiber.

23. Rotating fields composite material bumper with buffering laminate compound according to any one of claim 4 ~ 6, is characterized in that: described resin matrix is thermosetting resin matrix or is thermoplastic resin matrix.

The 24. Rotating fields composite material bumper with buffering laminate compound according to claim 23, is characterized in that: include curing agent in described thermosetting resin matrix, have the curing agent of 3 ~ 45 weight portions in the thermosetting resin matrix of 100 weight portions; Described curing agent is one or more the combination in aliphatic polyamine, alicyclic polyamine, Versamid, aromatic amine, aromatic polyamine, acid anhydrides, resol, amino resins, dicyandiamide and hydrazides.

The 25. Rotating fields composite material bumper with buffering laminate compound according to claim 23, is characterized in that: described resin matrix is epoxy resin, vinylite, unsaturated polyester resin, EPAR resin, phenolic resins, bimaleimide resin, polyimide resin, silicon rubber, EP rubbers, natural rubber, neoprene, CSM, acrylonitrile-butadiene rubber, fluorubber, polyurethane rubber, ACM, epichlorohydrin rubber, chlorinated polyethylene rubber, butyl rubber, isoprene rubber, butadiene-styrene rubber, fluorine silica gel, butadiene rubber, polyethylene (PE), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), polyformaldehyde (POM), polyamide (PA), Merlon (PC), acrylonitrile-butadiene-styrene copolymer (ABS), polymethyl methacrylate (PMMA), acrylonitritrile-styrene resin (A/S), polybutylene terephthalate (PBT) (PETP), PETG (PBTP), ethylene-octene copolymer (POE), ethylene-vinyl acetate (EVA), polysulfones (PSU), polyimides (PI), polyphenylene sulfide (PPS), polyether sulfone (PES), polyarylate (PAR), polyamidoimide (PAI), polybenzoate, the combination of one or more resin form in polytetrafluoroethylene (PTFE) (PTFE).