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Reinforcing toughening high-temperature-resistant nylon composite material and preparation method thereof

A nylon composite material, high temperature resistant technology, applied in the field of engineering plastics, can solve the problems of loss of material strength and rigidity, thermal deformation temperature drop, etc., to achieve the effect of improving strength and toughness, low molding shrinkage, and reducing proportion

Inactive Publication Date: 2014-12-24
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the patent US5013786 has good toughness and surface after adding 0.5% to 3% toughening agent to the mineral-filled polyamide composite material, and US534450 adds 0.5% to 15% polyester elastic to the mineral-filled polyamide composite material. body, the prepared material has excellent notched impact strength, but the strength and rigidity of the material are lost after adding the toughening agent, and the heat distortion temperature of the material drops significantly. Chinese patent CN101701105A compounded semi-aromatic polyamide and PA66 With the addition of 1% to 30% elastomer, the prepared material has a high notched impact strength, but the thermal deformation temperature of the material drops significantly, which limits its application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A reinforced and toughened high-temperature resistant nylon composite material, made of the following raw materials in parts by weight: 60 parts of semi-aromatic nylon PA10T, 10 parts of ultra-fine barium sulfate, 35 parts of alkali-free glass fiber, 0.5 part of maleic anhydride, stearin 1 part of calcium acid lubricant, 0.5 part of antioxidant, wherein antioxidant is tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester; its preparation method is:

[0042] (1) First dry the ultra-fine barium sulfate at 100-130°C for 2 hours, then add it to the high mixer while it is hot, then add silane coupling agent KH550 with 2% by weight of ultra-fine barium sulfate and mix it with ultra-fine barium sulfate at high speed 10-15 minutes;

[0043] (2) First dry the semi-aromatic nylon resin and filling reinforcing agent at 100-120°C and 90-100°C for 6-8 hours;

[0044] (3) Use a high-speed mixer to mix the compatibilizer, lubricant and antioxidant at high ...

Embodiment 2

[0048] A reinforced and toughened high-temperature resistant nylon composite material, made of the following raw materials in parts by weight: 60 parts of semi-aromatic nylon PA10T, 20 parts of ultra-fine barium sulfate, 35 parts of alkali-free glass fiber, 0.5 part of maleic anhydride, stearin 1 part of calcium acid lubricant, 0.5 part of antioxidant, wherein the antioxidant is tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester;

[0049] Its preparation method is with embodiment 1;

Embodiment 3

[0051] A reinforced and toughened high temperature resistant nylon composite material, made of the following raw materials in parts by weight: 60 parts of semi-aromatic nylon PA10T, 30 parts of ultra-fine barium sulfate, 35 parts of alkali-free glass fiber, 0.5 part of maleic anhydride, stearin 1 part of calcium acid lubricant, 0.5 part of antioxidant, wherein the antioxidant is tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester;

[0052] Its preparation method is with embodiment 1;

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Abstract

The invention belongs to the technical field of engineering plastics, and relates to a nylon composite material and a preparation method thereof. The composite material is prepared from the following components in parts by weight: 40-60 parts of a high-temperature-resistant nylon resin, 5-30 parts of ultra-fine barium sulfate, 20-40 parts of a filling reinforcing agent, 0.2-0.5 part of a compatilizer, 0.3-1.0 part of a lubricant, and 0.2-0.5 part of an antioxidant. Compared with the prior art, the high-temperature-resistant nylon is used as a matrix resin, glass fiber is used as the reinforcing agent, the ultra-fine barium sulfate is filled to be used as a toughening agent, in the premise of not reducing the thermal deformation temperature of the composite material, the strength and the toughness of the composite material are improved, and besides, the composite material has the advantages of low mold shrinkage rate, good processing performance, easy flowing, rapid molding, and relatively good apparent quality; the ratio of the expensive high-temperature-resistant nylon resin in the composite material is reduced, and thus the production cost of the composite material is reduced; and the preparation method has simple process.

Description

technical field [0001] The invention belongs to the technical field of engineering plastics, and relates to a nylon composite material and a preparation method thereof. Background technique [0002] High temperature resistant nylon products mainly include 6T, 7T, 8T, 9T, 10T, 12T, etc. in semi-aromatic polyamides, which are prepared by melting polycondensation of dicarboxylic acids with aromatic rings and aliphatic diamines. Aromatic rings are introduced into the main chain of polyamide molecules, which improves heat resistance and mechanical properties and reduces water absorption. It is a resin with high heat resistance between general-purpose engineering plastic nylon and high-temperature-resistant engineering plastic PEEK. Widely used in automotive, construction, electronic appliances and home appliance industries. [0003] At present, the existing fillers used to reinforce high-temperature-resistant nylon are mainly alkali-free glass fibers, but due to some shortcoming...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08K13/06C08K9/06C08K3/30C08K7/14B29B9/06B29C47/92B29C48/92
CPCC08L77/06B29B9/06B29C48/92B29C2948/9258B29C2948/92704C08K2201/003C08L2201/08C08L2205/03C08L53/02C08K13/06C08K9/06C08K2003/3045C08K7/14C08L51/06
Inventor 杨桂生李宗仁
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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