A kind of preparation method of carbon fiber reinforced resin composite material

A composite material, reinforced resin technology, applied in the direction of chemical instruments and methods, lamination, layered products, etc., can solve the production cost of PAN-based carbon fiber, the high cost of fiber preform weaving, the performance of composite materials needs to be further improved, and it is difficult to Fully meet the problems of the automobile industry, and achieve the effect of improving fracture toughness and repairability, strong random arrangement of fibers, and good strength and stiffness.

Active Publication Date: 2018-08-28
湖南东映碳材料科技股份有限公司
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  • Application Information

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Problems solved by technology

At present, there are two main problems in the application of carbon fiber-reinforced resin-based composite materials in automobiles. On the one hand, the production cost of PAN-based carbon fiber and the weaving cost of fiber preform are relatively high, resulting in high cost of the final composite material. Difficult to fully meet the needs of the automotive industry
On the other hand, the properties of composite materials need to be further improved
Carbon fiber-reinforced resin-based composites usually use thermosetting resins as the matrix. The thermosetting resin-based composites prepared by them have poor fracture toughness, low damage tolerance, and long molding and processing cycles.
Although the emerging thermoplastic resin-based composite materials have the characteristics of good toughness, short molding and processing cycle, and good repairability, the stiffness and strength of the material are poor.

Method used

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  • A kind of preparation method of carbon fiber reinforced resin composite material

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Embodiment 1

[0026] Embodiment 1: See Figure 1

[0027] A method for preparing a carbon fiber reinforced resin composite material. The low-cost pitch-based carbon fiber mat is selected as one of the reinforcements of the composite material, and the cost is low; the pitch-based carbon fibers in the preform are randomly distributed, and the degree of isotropy is smaller; the volume fraction is 30%. PAN-based carbon fiber carbon cloth-epoxy resin prepreg is selected as another reinforcement of the composite material, and the volume fraction of the fiber is 10%. A thermoplastic polypropylene film with a thickness of 0.5 mm was selected as the resin matrix of the pitch-based carbon fiber mat.

[0028] The above-mentioned pitch-based carbon fiber mat (2 places in Fig. 1), PAN-based carbon fiber carbon cloth-epoxy resin prepreg (3 places in Fig. 1), and polypropylene resin film (1 place in Fig. 1) according to 1213121 were stacked in sequence and then hot-pressed. The hot-pressing temperature w...

Embodiment 2

[0030] A method for preparing a carbon fiber reinforced resin composite material. The low-cost pitch-based carbon fiber non-woven fabric is selected as one of the reinforcements (preforms) of the composite material; the pitch-based carbon fibers in the preform are randomly distributed, and the degree of isotropy is smaller; the volume fraction is 20%. PAN-based carbon fiber carbon cloth-epoxy resin prepreg is selected as another reinforcement (prefabricated body) of the composite material, and the volume fraction of fibers is 15%. A thermoplastic polypropylene (PP) film with a thickness of 0.2 mm was selected as the resin matrix of the pitch-based carbon fiber mat.

[0031] The above-mentioned pitch-based carbon fiber non-woven fabric (2 places in Figure 1), PAN-based carbon fiber carbon cloth-epoxy resin prepreg (3 places in Figure 1), and polypropylene resin film (1 place in Figure 1) According to the order of 12121213121212121, hot pressing after overlapping placement was ...

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Abstract

The invention discloses a preparation method of a carbon fiber reinforced resin composite material. A PAN-based carbon fiber carbon cloth-epoxy resin prepreg, an asphalt-based carbon fiber felt body, and a thermoplastic resin film / thin plate are overlapped; hot-press molding is carried out, and the carbon fiber reinforced resin composite material is prepared. The composite material mainly employs the asphalt-based carbon fiber felt body of low cost as a reinforcement, so that the cost of raw materials of the composite material is reduced; asphalt-based carbon fibers in a prefabricated body are in random arrangement, so the level of isotropy is high; after the raw materials and the thermoplastic resin are compounded, fracture toughness properties and repairability of the composite material are improved. A certain amount of PAN-based carbon fiber carbon prepreg interlayer is added into the composite material, so that after solidification, strength and rigidity of the integral composite material are better.

Description

technical field [0001] The invention belongs to the technical field of resin-based composite materials. In particular, it relates to a preparation method of a carbon fiber reinforced resin composite material for an automobile body. technical background [0002] Driven by the global trend of energy saving and environmental protection, the automobile industry is developing in the direction of green environmental protection, lightweight and intelligent. The use of lightweight and high-strength carbon fiber reinforced resin matrix composites is one of the important ways to realize the lightweight of automobiles. At present, there are two main problems in the application of carbon fiber-reinforced resin-based composite materials in automobiles. On the one hand, the production cost of PAN-based carbon fiber and the weaving cost of fiber preform are relatively high, resulting in high cost of the final composite material. Difficult to fully meet the needs of the automotive industr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/00B32B37/06B32B37/10
CPCB32B9/007B32B37/06B32B37/10B32B2260/021B32B2260/046B32B2307/546B32B2605/08
Inventor 李轩科黄东叶崇唐春红
Owner 湖南东映碳材料科技股份有限公司
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