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High-impact low-shrink cast nylon composite material and preparation method thereof

A technology of casting nylon and composite materials, which is applied in the field of casting nylon modification, which can solve the problems of product surface and other adverse effects on performance, and achieve the effects of superior performance, good surface quality, improved toughness and dimensional stability

Inactive Publication Date: 2014-10-08
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional modification methods improve dimensional stability by adding inorganic fillers, but have adverse effects on the surface and other properties of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0030] (1) Weigh 100 parts by weight of caprolactam and place it in a reaction vessel, heat it to melt under the protection of nitrogen atmosphere, and vacuum dehydrate;

[0031] (2) Take 5 parts by weight of carbon fiber balls, place them in a methanol solution of 10% silane coupling agent KH550 for surface treatment for 10 minutes, and then dry them in an oven at 70°C for 1 hour;

[0032] (3) Add the surface-treated carbon fiber balls in the above step (2) to the lactam under the protection of nitrogen atmosphere, and ultrasonically disperse to a uniform state;

[0033] (4) Add 0.2 parts by weight of alkaline catalyst sodium hydroxide, 0.2 parts of antioxidant tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, 0.3 parts of antioxidant Tris[2.4-di-tert-butylphenyl]phosphite and 0.5 part of ethylidene bisstearamide, vacuum dehydration at 130°C for 10min;

[0034] (5) Add 0.2 parts by weight of initiator toluene diisocyanate to the solution prep...

example 2

[0038] (1) Weigh 100 parts by weight of caprolactam and place it in a reaction vessel, heat it to melt under the protection of nitrogen atmosphere, and vacuum dehydrate;

[0039] (2) Take 25 parts by weight of carbon fiber balls, place them in a methanol solution of silane coupling agent KH550 with a mass concentration of 20% for surface treatment for 20 minutes, and then dry them in an oven at 80°C for 2 hours;

[0040] (3) Add the surface-treated carbon fiber balls in the above step (2) to the lactam under the protection of nitrogen atmosphere, and ultrasonically disperse to a uniform state;

[0041] (4) Add 1 part by weight of alkaline catalyst sodium hydroxide, 0.8 parts of antioxidant tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, 1.2 parts of antioxidant Tris[2.4-di-tert-butylphenyl]phosphite and 2 parts of ethylidene bisstearamide, vacuum dehydration at 140°C for 20min;

[0042] (5) Add 0.8 parts by weight of initiator diphenylmethan...

example 3

[0046] (1) Weigh 100 parts by weight of caprolactam and place it in a reaction vessel, heat it to melt under the protection of nitrogen atmosphere, and vacuum dehydrate;

[0047] (2) Take 40 parts by weight of carbon fiber balls, place them in a methanol solution of silane coupling agent KH550 with a mass concentration of 40% for surface treatment for 30 minutes, and then dry them in an oven at 90°C for 3 hours;

[0048] (3) Add the surface-treated carbon fiber balls in the above step (2) to the lactam under the protection of nitrogen atmosphere, and ultrasonically disperse to a uniform state;

[0049] (4) Add 2 parts by weight of basic catalyst sodium methoxide, 1 part of antioxidant tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, 2 parts of antioxidant Tris[2.4-di-tert-butylphenyl]phosphite and 3 parts of ethylidene bisstearamide, vacuum dehydration at 155°C for 30min;

[0050] (5) Add 1.5 parts by weight of initiator hexamethylene diisocy...

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Abstract

The invention provides a carbon fiber ball-modified cast nylon composite material and a preparation method thereof. The composite material is prepared from 100 parts of lactam, 5-40 parts of carbon fiber ball, 0.5-3 parts of antioxidant, 0.5-3 parts of lubricating agent, 0.2-2 parts of catalyst and 0.2-1.5 parts of initiator. The carbon fiber balls are innovatively taken as filler for plastic modification, the aim of improving the toughness and dimensional stability of cast nylon is reached by utilizing anionic in-situ polymerization of lactam, and the surface quality of the product is also improved. The operational process is simple, and the prepared composite material is high in surface quality and excellent in performance and is suitable for large-scale industrial production.

Description

technical field [0001] The invention provides a high-impact, low-shrinkage cast nylon composite material and a preparation method thereof, belonging to the field of cast nylon modification. Background technique [0002] Cast nylon, referred to as MC nylon, is widely used in petrochemical, machinery and textile fields. With the increase of its use range and precision requirements, the toughness, dimensional stability and surface quality of materials are constantly challenged. Traditional modification methods improve dimensional stability by adding inorganic fillers, but have adverse effects on the surface and other properties of the product. Contents of the invention [0003] The invention provides a high-impact, low-shrinkage cast nylon composite material and a preparation method thereof, belonging to the field of cast nylon modification. The prepared composite material has good surface quality and superior performance, and is suitable for large-scale industrial productio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/18C08K9/06C08K7/06C08K3/04
Inventor 杨桂生李枭
Owner HEFEI GENIUS NEW MATERIALS
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