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Predefinition form agent of toughening function type RTM textile powder and preparing method thereof

A preform and setting agent technology, which is applied in the field of composite material manufacturing, can solve problems such as easy occurrence of hardening, and achieve the effects of preventing hardening, improving presetting effect, and improving impact damage resistance.

Inactive Publication Date: 2010-06-30
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another object of the present invention is: overcome the shortcoming that existing powder sizing agent is easy to harden under long-term storage conditions at room temperature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0012] As the preparation method of the above-mentioned powder setting agent, it is characterized in that the steps of preparation are as follows:

[0013] 1. Preparation of component A; add the raw material of component A into an airflow pulverizer, freeze pulverizer or mechanical pulverizer to pulverize to a particle size of 100-300 mesh;

[0014] 2. Preparation of component B: put the raw material of component B into an airflow pulverizer, freeze pulverizer or mechanical pulverizer to pulverize to a particle size of 50-100 mesh;

[0015] 3. Mixing: Weigh the pulverized components A and B in proportion, add them to the jet mill and mix for 1-10 minutes, or add them to the mechanical mixing device and mix for 10-60 minutes.

[0016] The basic working principle of the present invention is: the toughened functional powder setting agent prepared by the present invention is composed of two components, A and B. The component A is a thermoplastic polymer powder, and the component B...

Embodiment 1

[0018] Example 1. Put bis-horse monomer resin / allyl bisphenol A / allyl phenol copolymer into a jet mill and grind to 100 mesh, and 10 parts of polyether ether ketone to 250 mesh, and then two groups Parts are fully mixed in a jet mill under the condition of 50 mesh, which is the RTM double horse resin toughening and setting agent. Applying this sizing agent to 6421RTM / T700 composite material, the compressive strength after impact was increased from 150MPa to 255MPa.

Embodiment 2

[0019] Example 2. Grinding the prepolymer of epoxy resin and aromatic amine to 50-100 mesh, and crushing 10 parts of polyethersulfone to 200-250 mesh. It can be used as a toughening and setting agent for RTM epoxy resin molding composite reinforcement materials after fully mixing. Applying this sizing agent to 3266RTM / T700 composite material, the compressive strength after impact was increased from 170MPa to 265MPa.

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Abstract

The present invention belongs to the manufacture technology of composite material, which relates to predefinite form agent of toughening function type RTM textile powder and a preparing method thereof. The predefinite form agent of toughening function type RTM textile powder is formed by mixing a component A and a component B. The component A is high-performance thermoplastic polymer powder which can not be hardened and conglutinated, and meanwhile, the high-performance thermoplastic polymer powder is mainly distributed among the composite material after the composite material is formed to improve the shock resistant strength of the composite material. The component B is resin component with a proper softening point, and the softening point of the resincomponent is between 40 DEG C to 100 DEG C. The high-performance thermoplastic polymer powder occupies to 5% to 80 % of the total amount of the predefinite form agent, and the rest is the component A. The preparing method comprises the following steps of component A preparation, component B preparation and mixing. The predefinite form agent of toughening function type RTM textile powder can be avoided to be hardened under a condition of storing at room temperature for a long time, the predefinite form effect of textile is improved, and the compression performance after shocking of predefinite form textile RTM composite material, but the heat resistance and the mechanical property of the composite material are not affected. The predefinite form agent of toughening function type RTM textile powder comprises double-horse resin type, epoxy resin type and isocyanate resin type definite form agents.

Description

technical field [0001] The invention belongs to composite material manufacturing technology, and relates to an RTM composite material preform fabric powder sizing agent with a toughening function and a preparation method thereof. Background technique [0002] Toughening of RTM composites is one of the most important technical problems faced by RTM composites. Since the molding of RTM composite materials requires the RTM resin system to have a low viscosity, the method of adding rubber or thermoplastic polymer to the resin system cannot be used to improve the impact toughness of the composite material. Cyetec of the United States spins thermoplastic polymers into fibers, and uses the fibers to blend with carbon fibers to weave composite material reinforcements, or co-weaves the fibers and carbon fibers into composite material reinforcements, and then manufactures thermoplastic polymer fiber toughened RTM Composite materials, so that the impact toughness of RTM composite mate...

Claims

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Application Information

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IPC IPC(8): D06M15/21D06M15/41D06M15/55D06M15/63D06M15/53D06M15/59D06M23/08
Inventor 包建文钟翔屿李晔刘燕峰陈祥宝
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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