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Vacuum perfusion forming method of p-aramid fiber composite material workpiece

A technology of vacuum infusion and composite materials, which is applied in the field of vacuum infusion molding of para-aramid fiber composite materials, can solve the problems that para-aramid fiber composite materials have not been used, and is rare, and achieves good performance and control of content. The effect of high glue quantity and stability

Active Publication Date: 2013-03-27
宁夏泰和兴材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation of para-aramid composite materials is mostly in the research stage, and there are very few reports on real industrial production. There is no report on the production of para-aramid composite materials by vacuum infusion.

Method used

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  • Vacuum perfusion forming method of p-aramid fiber composite material workpiece
  • Vacuum perfusion forming method of p-aramid fiber composite material workpiece
  • Vacuum perfusion forming method of p-aramid fiber composite material workpiece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0125] A vacuum infusion molding method for para-aramid composite parts, figure 1 with figure 2 It is a schematic diagram of the layered structure of the para-aramid composite material during the vacuum infusion process of the present invention, such as image 3 As shown, the method includes the following steps:

[0126] 1. Clean the mold 1

[0127] The combined mold 1 made of stainless steel material includes opposite female molds and male molds, and the prepared para-aramid composite material is a rectangular plate-shaped part. Use a flat spatula to carefully remove the residual glue left over from the last demolding on the mold 1 without damaging the surface; rinse the mold release agent with water and wipe it dry for later use.

[0128] 2. Brush release agent

[0129] Heat 45 parts of water to 60~70℃, add 5 parts of polyvinyl alcohol (low molecular powder, average molecular weight of 16000~20000), keep warm and stir until it is completely dissolved, then cool to room temperature,...

Embodiment 2

[0171] A vacuum infusion molding method for para-aramid composite parts, figure 1 with figure 2 It is a schematic diagram of the layered structure of the para-aramid composite material during the vacuum infusion process of the present invention, such as image 3 As shown, the method includes the following steps:

[0172] 1. Clean the mold 1

[0173] A combined mold 1 made of stainless steel is used, including opposite female molds and male molds, and the prepared para-aramid composite parts are rectangular parts. Stick the residual glue left over from the last demolding to the mold, use a flat spatula to carefully remove it, and not damage the surface; wash the mold release agent with water, and wipe it dry for later use.

[0174] 2. Brush release agent

[0175] Heat 45 parts of water to 60~70℃, add 5 parts of polyvinyl alcohol (low molecular powder, average molecular weight of 16000~20000), keep warm and stir until it is completely dissolved, then cool to room temperature, then stir...

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Abstract

The invention relates to a vacuum perfusion forming method of a p-aramid fiber composite material workpiece. The vacuum perfusion forming method specifically comprises the following steps of: (1) cleaning a mold; (2) painting a releasing agent; (3) respectively preparing resin glue for the gel-coat layer, resin glue for a surface layer and resin glue for perfusion; (3) manufacturing the gel-coat layer; (5) manufacturing the surface layer; (6) manufacturing a reinforcing layer which comprises p-aramid fiber cloth; (7) laying a vacuum perfusion device and sealing; (8) carrying out vacuum perfusion; (9) curing the workpiece; (10) demolding; (11) connecting a reinforcing member and a connecting piece; and (12) post-processing. The p-aramid fiber composite material prepared by the vacuum perfusion forming method provided by the invention is simple in production method and can effectively increase the ultraviolet resistance performance of the p-aramid fiber composite material workpiece; and simultaneously, p-aramid fibers and resin have a good caking property so that the composite has stable and good performances.

Description

Technical field [0001] The invention relates to a preparation method of a para-aramid composite material article, in particular to a vacuum infusion molding method of a para-aramid composite material article. Background technique [0002] Among the existing high-performance fibers, para-aramid is one of the organic fibers with the best comprehensive performance. Its outstanding performance characteristics are high strength, high modulus and high temperature resistance, as well as wear resistance, flame retardancy and chemical corrosion resistance. , Insulation, anti-cutting, fatigue resistance, flexibility, good dimensional stability and other properties, so para-aramid composite materials are known as the diamond in the crown of global materials, one of the three high-performance materials, and its industrialization process China's national defense construction and leading industrial projects (such as large aircraft, high-speed trains, shipbuilding, electricity, electronic infor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/36
Inventor 马千里王双成许德胜姜茂忠
Owner 宁夏泰和兴材料科技有限公司
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