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Method for preparing high-toughness and high-strength PET (polyethylene terephthalate)/glass fiber composites and products of composites

A glass fiber and composite material technology, applied in the field of material modification and materials, can solve the problems of large proportion of parts and high production costs, and achieve the effect of meeting the requirements of strength and toughness, excellent dimensional stability and good application prospects.

Active Publication Date: 2017-06-13
SICHUAN COREMER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the defects that the brake resistor valve body made of metal materials has a large proportion of parts and high production cost, while the brake resistor valve body made of the existing PET / glass fiber composite material cannot meet the requirements. To solve the problem of its mechanical performance requirements, provide a method for preparing high-toughness and high-strength PET / glass fiber composite materials and its products

Method used

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  • Method for preparing high-toughness and high-strength PET (polyethylene terephthalate)/glass fiber composites and products of composites
  • Method for preparing high-toughness and high-strength PET (polyethylene terephthalate)/glass fiber composites and products of composites
  • Method for preparing high-toughness and high-strength PET (polyethylene terephthalate)/glass fiber composites and products of composites

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Each component is weighed according to the following mass percentage:

[0037]

Embodiment 2

[0039] Each component is weighed according to the following mass percentage:

[0040]

[0041] In above-mentioned embodiment 1, embodiment 2:

[0042] PET resin refers to homopolymerized PET with an intrinsic viscosity of 0.8dl / g;

[0043] Chopped fibers without active groups refer to chopped fibers obtained by treating commercial chopped fibers at a high temperature of 400°C for 1 hour to remove the surfactant treatment agent;

[0044] The chopped fibers containing active groups are glass fibers with the product name ECS 303W produced by Chongqing International Composite Materials Co., Ltd., and their surfaces contain active epoxy groups;

[0045] The toughening agent is EMA LOTADER AX8900 resin produced by Arkema, France, which is a random terpolymer of ethylene-methyl acrylate-glycidyl methacrylate, manufactured by high-pressure free radical polymerization process;

[0046] The nucleating agent is sodium benzoate E221 produced by Univar Benelux;

[0047] Composite antio...

Embodiment 3

[0050] The granules obtained in Example 1 were placed in a vacuum drum for solid-phase thickening for 20 hours. Wherein, the solid-phase viscosity increasing temperature is 220° C., and the air pressure in the vacuum drum is 480 Pa.

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Abstract

The invention discloses a method for preparing high-toughness and high-strength PET (polyethylene terephthalate) / glass fiber composites and products of the composites, and aims to solve the problems that an existing brake booster valve prepared by metal materials is high in part and component proportion and manufacturing cost, and a brake booster valve prepared by an existing PET / glass fiber composites cannot meet mechanical performance requirements of the composites. According to the method, processes are improved, the problems are effectively solved, the molecular weight of fiber-reinforced polyester composites is remarkably improved, mechanical performances of the composites such as tensile strength and impact strength are remarkably improved, and the PET / glass fiber composites are high in toughness and strength, superior in mechanical performance and good in size stability and successfully prepared. The composites have the advantages of superior mechanical performance, good size stability and high toughness and strength and can be used for preparing high-performance structure parts such as brake booster valves, and the composites have good application prospects.

Description

technical field [0001] The invention relates to the field of materials, especially the field of material modification, and specifically relates to a method for preparing a high-toughness and high-strength PET / glass fiber composite material and a product thereof. The invention provides a method for preparing a high-toughness and high-strength PET / glass fiber composite material by solid-phase viscosity increase with a vacuum drum and its product. The product is suitable for making a brake booster valve body with outstanding mechanical properties and dimensional stability. Excellent high toughness and high strength PET / glass fiber composite material with excellent application prospects. Background technique [0002] Polyethylene terephthalate (PET for short) is a special engineering plastic with low price, excellent wear resistance, heat resistance, chemical resistance, electrical insulation and high mechanical strength. As we all know, adding fibers (such as glass fiber, carb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L23/08C08K13/04C08K5/098C08K5/526C08K5/134C08K7/14
CPCC08L67/02C08L23/0884C08K13/04C08K5/098C08K5/526C08K5/1345C08K7/14
Inventor 黄精金杨克斌刘光耀钟辉刘菁伟
Owner SICHUAN COREMER CO LTD