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Polyamide 66 composite material and preparation method thereof

A composite material and polyamide technology, applied in the field of materials, can solve problems such as difficult to meet, poor dimensional stability, large linear expansion coefficient, etc., and achieve the effects of reducing resin shear, improving nucleation ability, and high dielectric strength

Inactive Publication Date: 2020-11-24
GUANGDONG ALDEX NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyamide 66 (PA66) has excellent mechanical properties and solvent resistance, but its shrinkage rate is between 1% and 1.5%, poor dimensional stability and large linear expansion coefficient, and it is difficult to meet the high requirements for parts assembly. Large parts in the automotive field

Method used

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  • Polyamide 66 composite material and preparation method thereof
  • Polyamide 66 composite material and preparation method thereof
  • Polyamide 66 composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] This embodiment provides a polyamide 66 composite material prepared from the following raw materials in parts by weight:

[0080] Polyamide 66 85 parts,

[0081] 15 parts mica powder,

[0082] The sum of the parts by weight of polyamide 66 and mica powder is 100 parts,

[0083]

[0084]

[0085] The preparation method of above-mentioned polyamide 66 composite material, comprises the following steps:

[0086] (1) After drying the polyamide 66 at a temperature of 110° C. for 4 hours, and then cooling, the cooled polyamide 66 and the ethylene-maleic anhydride-glycidyl methacrylate copolymer, 2, 2'-(1,3-phenylene)-bisoxazoline, long-chain linear saturated carboxylic acid sodium salt, N,N'-bis(2,2,6,6-tetramethyl-4-piperidine Base)-1,3-phthalamide and bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphate are added to the mixer for mixing;

[0087] (2) adding the mica powder, calcium sulfate whiskers and titanate coupling agent into another mixer and mixi...

Embodiment 2

[0091] This embodiment provides a polyamide 66 composite material prepared from the following raw materials in parts by weight:

[0092] Polyamide 66 65 parts,

[0093] 35 parts of mica powder,

[0094] The sum of the parts by weight of polyamide 66 and mica powder is 100 parts,

[0095]

[0096]

[0097] The preparation method of above-mentioned polyamide 66 composite material, comprises the following steps:

[0098](1) After drying the polyamide 66 at a temperature of 80°C for 8 hours, cooling, the cooled polyamide 66 and the ethylene-maleic anhydride-glycidyl methacrylate copolymer, 2, 2'-(1,3-phenylene)-bisoxazoline, long-chain linear saturated carboxylic acid sodium salt, N,N'-bis(2,2,6,6-tetramethyl-4-piperidine Base)-1,3-phthalamide and bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphate are added to the mixer for mixing;

[0099] (2) adding the mica powder, calcium sulfate whiskers and titanate coupling agent into another mixer and mixing;

[01...

Embodiment 3

[0103] This embodiment provides a polyamide 66 composite material prepared from the following raw materials in parts by weight:

[0104] Polyamide 66 82 parts,

[0105] 18 parts mica powder,

[0106] The sum of the parts by weight of polyamide 66 and mica powder is 100 parts,

[0107]

[0108]

[0109] The preparation method of above-mentioned polyamide 66 composite material, comprises the following steps:

[0110] (1) After drying the polyamide 66 at a temperature of 100° C. for 4 hours, cooling, the cooled polyamide 66 and the ethylene-maleic anhydride-glycidyl methacrylate copolymer, 2, 2'-(1,3-phenylene)-bisoxazoline, long-chain linear saturated carboxylic acid sodium salt, N,N'-bis(2,2,6,6-tetramethyl-4-piperidine Base)-1,3-phthalamide and bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphate are added to the mixer for mixing;

[0111] (2) adding the mica powder, calcium sulfate whiskers and titanate coupling agent into another mixer and mixing;

[0...

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PUM

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Abstract

The invention relates to a polyamide 66 composite material and a preparation method thereof. The polyamide 66 composite material is prepared from the following raw materials, polyamide 66, mica powder, flat glass fiber, calcium sulfate whiskers, titanate coupling agent, ethylene-maleic anhydride-glycidyl methacrylate copolymer, 2,2'-(1,3-phenylene)-dioxazoline, long-chain linear saturated sodium carboxylates, N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)-1,3-phthalic amide, and bis(2,6-di-tert-butyl-4-methyl phenyl)pentaerythritol diphosphate. The polyamide 66 composite material has excellent mechanical properties and processability, low linear expansion coefficient and low warpage. The polyamide 66 composite material can be used in the automotive field, aerospace field, electronic and electrical field, home appliance field, etc.

Description

technical field [0001] The invention relates to the field of materials, in particular to a polyamide 66 composite material and a preparation method thereof. Background technique [0002] In the existing automobile industry, the assembly gap between different material parts is required to be as small as possible and the dimensional stability is high, which requires polymer materials to have low warpage and linear expansion coefficient (CLTE). Polyamide 66 (PA66) has excellent mechanical properties and solvent resistance, but its shrinkage rate is between 1% and 1.5%, poor dimensional stability and large linear expansion coefficient, and it is difficult to meet the high requirements for parts assembly. Large parts in the automotive field. [0003] The coefficient of linear expansion (CLTE) refers to the ratio of the change in length (ΔL) of the material within the range of unit temperature change (ΔT) to the initial length (L), CLTE=ΔL / (L×ΔT). The CLTE of the material has a ...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L23/08C08K3/34C08K7/14C08K7/08C08K5/3435C08K9/04C08K5/527C08K5/353C08K13/06
CPCC08L77/06C08L2201/08C08L23/0884C08K3/34C08K7/14C08K7/08C08K5/3435C08K9/04C08K5/527C08K5/353C08K13/06
Inventor 王忠强韩春春丁佳王礼军
Owner GUANGDONG ALDEX NEW MATERIAL CO LTD
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