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UV-resistant graphene quantum dot composite p-aramid fiber preparation method

A technology of graphene quantum dots and para-aramid fibers, which is applied in the fields of fiber chemical characteristics, rayon manufacturing, single-component synthetic polymer rayon, etc., can solve the problems of poor UV resistance and improve UV resistance , Excellent UV resistance, and the effect of improving dispersion ability

Active Publication Date: 2016-05-04
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of poor UV resistance of para-aramid fibers in the prior art

Method used

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Embodiment 1

[0039] A kind of preparation method of anti-ultraviolet graphene quantum dot composite para-aramid fiber, comprises the following steps:

[0040] 1) Vinyl functionalization of graphene quantum dots

[0041] Dissolve 100mg of graphene oxide quantum dots in 100ml of ethylenediamine, add 50mg of 4-dimethylaminopyridine and 50mg of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide salt acid salt, ultrasonically dispersed for 30min, reacted at 90°C for 24h, cooled to room temperature, filtered and washed with water, and dried at 60°C for 12h. The reaction product was added to a mixed solution of 50 mg of 4-dimethylaminopyridine, 50 mg of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and 20 ml of dewatered acrylic acid Ultrasonic dispersion in medium for 30min, then reacted at 50°C for 12h, filtered and washed with water, and dried at 60°C for 12h to obtain vinyl-functionalized graphene quantum dots.

[0042] The graphene quantum dots have a thickness of 0.34-1 nm and a ...

Embodiment 2

[0051] A kind of preparation method of anti-ultraviolet graphene quantum dot composite para-aramid fiber, comprises the following steps:

[0052] 1) Vinyl functionalization of graphene quantum dots

[0053] Dissolve 200mg of graphene oxide quantum dots in 100ml of ethylenediamine, add 50mg of 4-dimethylaminopyridine and 50mg of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide salt acid salt, ultrasonically dispersed for 30min, reacted at 90°C for 24h, cooled to room temperature, filtered and washed with water, and dried at 60°C for 12h. The reaction product was added to a mixed solution of 50 mg of 4-dimethylaminopyridine, 50 mg of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and 20 ml of dewatered acrylic acid Ultrasonic dispersion in medium for 30min, then reacted at 50°C for 12h, filtered and washed with water, and dried at 60°C for 12h to obtain vinyl-functionalized graphene quantum dots.

[0054] The graphene quantum dots have a thickness of 0.34-1 nm and a ...

Embodiment 3

[0063] A kind of preparation method of anti-ultraviolet graphene quantum dot composite para-aramid fiber, comprises the following steps:

[0064] 1) Vinyl functionalization of graphene quantum dots

[0065] Dissolve 500mg of graphene oxide quantum dots in 100ml of ethylenediamine, add 50mg of 4-dimethylaminopyridine and 50mg of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide salt acid salt, ultrasonically dispersed for 30min, reacted at 90°C for 24h, cooled to room temperature, filtered and washed with water, and dried at 60°C for 12h. The reaction product was added to a mixed solution of 50 mg of 4-dimethylaminopyridine, 50 mg of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and 20 ml of dewatered acrylic acid Ultrasonic dispersion in medium for 30min, then reacted at 50°C for 12h, filtered and washed with water, and dried at 60°C for 12h to obtain vinyl-functionalized graphene quantum dots.

[0066] The graphene quantum dots have a thickness of 0.34-1 nm and a ...

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Abstract

The invention discloses a UV-resistant graphene quantum dot composite p-aramid fiber preparation method. The preparation method comprises 1, graphene quantum dot vinylation functionalization, 2, grafting of reactive benzotriazole to the graphene quantum dots, 3, p-aramid modification through the reactive benzotriazole-grafted graphene quantum dots and 4, preparation of p-aramid fibers modified through the reactive benzotriazole-grafted graphene quantum dots. The p-aramid fiber has UV screening and absorption capabilities, has excellent UV resistance, improves a service life of the aramid fibers in air and can be used for an aerospace industry, national defense, an automobile industry, body armor, a communication cable and a sports car.

Description

technical field [0001] The invention relates to the field of preparation of para-aramid composite fibers, in particular to a preparation method of ultraviolet-resistant graphene quantum dot composite para-aramid fibers. Background technique [0002] Para-aramid fiber, also known as aramid 1414, is an organic fiber whose macromolecular chain is composed of aromatic rings and amide bonds. It has high strength, high modulus, and low density. Its specific strength is 5-5% of steel 6 times, the modulus is 2 to 3 times that of steel wire and glass fiber, the toughness is 2 times that of steel wire, but the density is only one-fifth of steel wire, and it is resistant to high temperature, acid, alkali and most organic solvents. Therefore, aramid fibers are widely used in aerospace industry, national defense, automobile industry, body armor, communication cables and sports cars. However, when aramid fiber is used in the atmosphere, the ultraviolet rays in the sun will cause aging an...

Claims

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Application Information

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IPC IPC(8): D01F6/90D01F1/10
CPCD01F1/106D01F6/905
Inventor 李朝龙叶恩洲褚金史浩飞
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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