A nanoparticle reinforced self-lubricating cast nylon composite shaft sleeve and its manufacturing method

A composite shaft sleeve and cast nylon technology, applied in the field of cast nylon composite materials, can solve the problems of limited performance improvement of composite materials, unstable quality, expensive graphene, etc., and achieve surface temperature reduction, wear reduction, and bearing capacity. improved effect

Active Publication Date: 2018-03-27
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, due to the immature technology and process of graphene preparation, the price of graphene is expensive, and the quality is unstable, so the performance improvement of composite materials is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: A kind of nanoparticle reinforced self-lubricating cast nylon composite bushing, the components that constitute the composite bushing include caprolactam monomer, sodium hydroxide, triphenylmethane triisocyanate, nanometer fluorinated graphite and mica powder, its The ratio of parts by weight is 100:0.15:0.3:0.4:2.0, wherein the density of nano-fluorinated graphite used is 2.5g / cm 3 , the particle size is less than 80nm, and the density of mica powder is 2.7g / cm 3 , the particle size of mica powder is less than 5um;

[0022] A method for manufacturing the above-mentioned nanoparticle reinforced self-lubricating cast nylon composite bushing, comprising the steps of:

[0023] (1) Heat 100 parts by weight of caprolactam monomer to 130°C to melt, vacuumize and dehydrate for 20 minutes, then add 0.15 parts by weight of sodium hydroxide therein, and vacuumize and dehydrate for 10 minutes again to obtain a reaction melt;

[0024] (2) Add 0.4 parts by weight of ...

Embodiment 2

[0026] Embodiment 2: A kind of nanoparticle reinforced self-lubricating cast nylon composite bushing, the components that constitute the composite bushing include caprolactam monomer, sodium hydroxide, triphenylmethane triisocyanate, nanometer fluorinated graphite and mica powder, its The ratio of parts by weight is 100:0.45:0.6:0.5:4.0, and the density of the nano-fluorinated graphite used is 2.6g / cm 3, the particle size is less than 80nm, the density of mica powder is 3.2g / cm 3 , the particle size of mica powder is less than 5um;

[0027] A method for manufacturing the above-mentioned nanoparticle reinforced self-lubricating cast nylon composite bushing, comprising the steps of:

[0028] (1) Heat 100 parts by weight of caprolactam monomer to 130°C to melt, vacuumize and dehydrate for 20 minutes, then add 0.45 parts by weight of sodium hydroxide therein, and vacuumize and dehydrate for 10 minutes again to obtain a reaction melt;

[0029] (2) Add 0.5 parts by weight of nano-...

Embodiment 3

[0031] Embodiment 3: A kind of nanoparticle reinforced self-lubricating cast nylon composite bushing, the components that constitute the composite bushing include caprolactam monomer, sodium hydroxide, triphenylmethane triisocyanate, nanometer fluorinated graphite and mica powder, its The ratio of parts by weight is 100:0.3:0.45:0.45:3.0, and the density of the nano-fluorinated graphite used is 2.6g / cm 3 , the particle size is less than 80nm, the density of mica powder is 3.0g / cm 3 , the particle size of mica powder is less than 5um;

[0032] A method for manufacturing the above-mentioned nanoparticle reinforced self-lubricating cast nylon composite bushing, comprising the steps of:

[0033] (1) Heat 100 parts by weight of caprolactam monomer to 130°C to melt, vacuumize and dehydrate for 20 minutes, then add 0.3 parts by weight of sodium hydroxide therein, and vacuumize and dehydrate for 10 minutes again to obtain a reaction melt;

[0034] (2) Add 0.45 parts by weight of nan...

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Abstract

A nanoparticle reinforced self-lubricated cast nylon composite shaft sleeve is prepared from components including a caprolactam monomer, sodium hydroxide, triphenylmethane triisocyanate, nano graphite fluoride and mica powder in a weight ratio being 100:(0.15-0.45):(0.3-0.6):(0.4-0.5):(2.0-4.0). The manufacturing method of the composite shaft sleeve comprises preparation of reaction melts, preparation of a dispersion liquid as well as molding and demolding, the centrifugal casting method is adopted in the casting process, so that more nano graphite fluoride and mica powder are centralized and distributed on the outer surface of the shaft sleeve, the shaft sleeve has better bearing capacity and more excellent anti-friction and wear-resistance properties, the wear of the shaft sleeve is reduced, and the service life of the shaft sleeve is prolonged.

Description

technical field [0001] The invention belongs to the technical field of cast nylon composite materials, and in particular relates to a nanoparticle-reinforced self-lubricating cast nylon composite shaft sleeve and a manufacturing method thereof. Background technique [0002] Friction and wear consume 30% to 40% of the world's energy consumption. As a natural phenomenon in the process of object movement, friction is an old problem faced by human beings in the process of understanding and transforming nature. For this reason, the research on anti-friction and wear-resistant materials is very necessary and an inevitable development direction. [0003] Cast nylon (MC) is formed by ring-opening polymerization of caprolactam monomer. The polymerization reaction and product molding are carried out in one mold. Cast nylon has a small specific gravity and light weight, and its density is 1.15~1.16g / cm 3 , has the characteristics of good chemical stability, good electrical insulation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G69/14C08K9/04C08K3/04C08K3/34C08K5/29
CPCC08G69/14C08K3/04C08K3/34C08K5/29C08K9/04
Inventor 王爱琴梁婷婷郭惠丹田捍卫刘帅洋吕世敬马窦琴谢敬佩王文焱李继文
Owner HENAN UNIV OF SCI & TECH
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