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High-ductility high-strength polyamide material and preparation method thereof

A high-strength polyamide and ductility technology, applied in the field of polyamide materials, can solve the problems of reducing the mechanical properties of nanoparticle/polyamide composite materials, achieve strong interface force, good compatibility, and maintain mechanical properties.

Active Publication Date: 2020-08-11
江门市融泰新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the preparation of nanoparticle / polyamide composite materials, due to the small size of nanoparticles and the high viscosity of polyamide, it is difficult to be mixed and uniformly dispersed, which usually significantly reduces the mechanical properties of nanoparticle / polyamide composite materials, especially the ductility. sex

Method used

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  • High-ductility high-strength polyamide material and preparation method thereof
  • High-ductility high-strength polyamide material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0027] A high ductility and high strength polyamide material, its raw materials include: polyamide composite masterbatch 70kg, low density polyethylene 25kg, maleic anhydride grafted polyethylene 2kg, polypropylene fiber 10kg, nano cellulose whiskers 6kg, benzene Ethylene-butadiene-styrene triblock copolymer 1kg, styrene-butadiene-styrene-butadiene-styrene pentablock copolymer 1kg, silane coupling agent KH-550 1kg, antioxidant 2246 2kg, chlorinated paraffin 1kg, iron oxide red 2kg.

[0028] The polyamide composite masterbatch is prepared by the following process:

[0029] Mix concentrated sulfuric acid with a concentration of 80wt% and concentrated nitric acid with a concentration of 75wt% in a mass ratio of 1:2 to obtain a mixed acid;

[0030] Using the above mixed acid to activate multi-walled carbon nanotubes with an aspect ratio of 1500:1;

[0031] Stir 5kg of activated multi-walled carbon nanotubes, 2kg of polyethylene wax, and 50kg of caprolactam melt for 15 minutes at...

Embodiment 2

[0037] A high ductility and high strength polyamide material, its raw materials include: polyamide composite masterbatch 90kg, low density polyethylene 15kg, maleic anhydride grafted polyethylene 6kg, polypropylene fiber 5kg, nano cellulose whiskers 12kg, benzene Ethylene-butadiene-styrene triblock copolymer 1kg, silane coupling agent KH-550 3kg, antioxidant CA 1kg, oxidized polyethylene wax 2kg, iron oxide red 1kg.

[0038] The polyamide composite masterbatch is prepared by the following process:

[0039] Mix concentrated sulfuric acid with a concentration of 88wt% and concentrated nitric acid with a concentration of 70wt% in a mass ratio of 1:4 to obtain a mixed acid;

[0040] Using the above mixed acid to activate multi-walled carbon nanotubes with an aspect ratio of 1200:1;

[0041] Stir 15kg of activated multi-walled carbon nanotubes, 1kg of polyethylene wax, and 100kg of caprolactam melt for 5 minutes at a stirring temperature of 100°C and a stirring speed of 1200r / min;...

Embodiment 3

[0047] A high ductility and high strength polyamide material, its raw materials include: polyamide composite masterbatch 75kg, low density polyethylene 22kg, maleic anhydride grafted polyethylene 3kg, polypropylene fiber 8kg, nano cellulose whiskers 8kg, benzene Ethylene-butadiene-styrene-butadiene-styrene pentablock copolymer 1.7kg, silane coupling agent KH-580 1.5kg, antioxidant DPD 1.8kg, microcrystalline paraffin 1.3kg, iron oxide red 1.6 kg.

[0048] The polyamide composite masterbatch is prepared by the following process:

[0049] Mix concentrated sulfuric acid with a concentration of 82wt% and concentrated nitric acid with a concentration of 74wt% at a mass ratio of 1:2.5 to obtain a mixed acid;

[0050] Using the above mixed acid to activate multi-walled carbon nanotubes with an aspect ratio of 1400:1;

[0051] Stir 8kg of activated multi-walled carbon nanotubes, 1.7kg of polyethylene wax, and 60kg of caprolactam melt for 12min at a stirring temperature of 92°C and a...

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Abstract

The invention discloses a high-ductility and high-strength polyamide material. The polyamide composite material is prepared from the following raw materials in parts by weight: 70 to 90 parts of polyamide composite master batch, 15 to 25 parts of low-density polyethylene, 2 to 6 parts of maleic anhydride grafted polyethylene, 5 to 10 parts of polypropylene fiber, 6 to 12 parts of nano cellulose whisker, 1 to 2 parts of a toughening agent, 1 to 3 parts of coupling agent, 1 to 2 parts of an antioxidant, 1 to 2 parts of a coloring agent and 1 to 2 parts of a lubricant. Wherein the polyamide composite master batch is a polyamide material grafted by activated multi-walled carbon nanotubes. The invention further discloses a preparation method of the high-ductility and high-strength polyamide material. The obtained composite polyamide material is excellent in mechanical property and high in ductility, and the application range of the polyamide material is widened.

Description

technical field [0001] The invention relates to the technical field of polyamide materials, in particular to a polyamide material with high ductility and high strength and a preparation method thereof. Background technique [0002] Polyamide (nylon), English name: Polyamide, abbreviated name PA, its chemical formula is: [-NH(CH 2 ) 6 -NHCO(CH 2 ) 4 CO] n . Polyamide is an important class of engineering plastics with good comprehensive properties, including mechanical properties, chemical resistance and self-lubricating properties, and low coefficient of friction; due to the large number of polar amide bonds in polyamide, it is very suitable as a matrix material Composite with other inorganic materials to prepare composite materials, especially suitable as the matrix of nanocomposite materials. Studies have shown that adding nanoparticles to polyamide often endows polyamide with properties that polyamide does not have, such as wear resistance, high temperature resistanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L87/00C08L23/06C08L51/06C08L23/12C08L1/02C08L53/02C08J3/22C08G83/00
CPCC08J3/226C08G83/001C08J2387/00C08J2423/06C08J2451/06C08J2423/12C08J2401/02C08J2453/02
Inventor 李霞
Owner 江门市融泰新材料科技有限公司
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