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Preparing method of toughened carbon fiber resin-based composite

A carbon fiber resin matrix and composite material technology is applied in the field of preparation of toughened carbon fiber resin matrix composite materials, which can solve the problems of high production cost, complexity, environmental pollution, etc., and achieve improved mechanical properties, simple preparation process, and strong operability. Effect

Inactive Publication Date: 2019-10-25
DONGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method of preparing membranes will cause environmental pollution in industrial production due to the use of solution dissolution, and the solvent needs to be recycled, resulting in high production costs, and the preparation is more complicated than the preparation of composite fiber webs.

Method used

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  • Preparing method of toughened carbon fiber resin-based composite
  • Preparing method of toughened carbon fiber resin-based composite

Examples

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Comparison scheme
Effect test

Embodiment 1

[0042] (1) Take 70g of polyethersulfone and put it into a blender, add 30g of E51 epoxy resin, and mechanically blend to obtain a blend.

[0043] (2) Add the obtained blend into twin-screws for melt spinning, and collect the spun fibers into rolls through a winder, and collect them for use.

[0044] (3) Slowly unwind the obtained fiber roll onto a winding drum, and then put it into a 160° C. oven for heat setting for 10 minutes.

[0045] (4) Put the fiber net between the continuous carbon fiber cloth layers, lay carbon fiber cloth, release cloth, diversion net, and vacuum bag to seal the whole system according to the VARI process. Then, the gas in the mold cavity was pumped out under vacuum negative pressure, and E51 epoxy resin was poured at 60°C. The resin viscosity was 0.2Pa·s, and the ratio of composite mold to carbon fiber cloth layers was 9:11. Curing at 120° C. for 2 hours, and then curing at 180° C. for 1 hour (the curing agent is E100 DETDA) to obtain a polyethersulf...

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Abstract

The invention discloses a preparing method of a toughened carbon fiber resin-based composite. The composite is a polyether sulfone / epoxy resin composite fiber net and is arranged between carbon fibercloths, and the composite is made through VARI forming. Compared with a composite film, the prepared composite fiber net is simple in process, high in operation and suitable for industrial production.Due to the fact that no solvent is added, the method has the good environment friendliness, the mechanical property of the prepared composite is improved in a small scale manner, the interlayer breaking tenacity can be obviously improved, and the good application prospect is achieved.

Description

technical field [0001] The invention belongs to the field of preparation of carbon fiber composite materials, in particular to a preparation method of toughened carbon fiber resin-based composite materials. Background technique [0002] With the development of lightweight materials in the aviation industry, carbon fiber resin composites (Carbon Fiber Reinforced Polymer CFRP) are more and more used in the primary / secondary structural materials of aircraft, so the development of high-toughness carbon fiber / epoxy resin composites It is an important research direction in the field of composite materials at present. [0003] There are two main methods of toughening carbon fiber / epoxy resin composites: one is to toughen the epoxy resin matrix, and the other is to toughen the composite material between layers. Interlaminar toughening is the addition of toughening material layers between composite material plies to improve the fracture toughness and damage tolerance of composite ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/36B29C70/54B29C48/05B29C70/16
CPCB29C70/36B29C70/54B29C48/05B29C70/16
Inventor 张辉王钰皓万晓雪陈正国徐磊周帅程超王恒星黄壮刘勇余木火孙泽玉滕翠青
Owner DONGHUA UNIV
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