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High-performance graphene composite para-aramid fiber and its preparation method and application

A para-aramid fiber and graphene composite technology, applied in spinning solution preparation, fiber chemical characteristics, dry spinning, etc., can solve the problem that para-aramid fiber has a single function, cannot meet, and does not give excellent performance, etc. question

Active Publication Date: 2019-08-06
JINAN SHENGQUAN GRP SHARE HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the function of this para-aramid fiber itself is relatively simple, and it does not endow more excellent performance compared with the unmodified para-aramid fiber, and although the strength is slightly improved, it still cannot meet the needs of today's market

Method used

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  • High-performance graphene composite para-aramid fiber and its preparation method and application
  • High-performance graphene composite para-aramid fiber and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The preparation method of the high-performance graphene composite para-aramid fiber is as follows:

[0052] 1) Add 8kg of anhydrous calcium chloride, 100kg of N-methylpyrrolidone (NMP), and 3.45kg of p-phenylenediamine (PPD) into the reactor, start stirring, and stir for 30min at room temperature; , let the system temperature drop to 0~-15℃, add the first batch of terephthaloyl chloride (TPC) 1.3kg, continue to stir for 30min, then lower the temperature to 0~-15℃, add the second batch of TPC 5.2kg, stir quickly , after the reaction system appears gel, climbs rods, and is crushed again, the reaction is stopped, and polyparaphenylene terephthalamide (PPTA) is obtained;

[0053] 2) Add 1kg of graphene oxide to 80kg of 95wt% concentrated sulfuric acid, and ultrasonically disperse for 1h to obtain a stable dispersion. The suspension is centrifuged for the first time at a speed of 2000rpm, and the centrifugation time is 20min to remove the bottom sediment. Carry out the seco...

Embodiment 2

[0057] The specific process steps are basically the same as Example 1 of the present invention, and the difference with Example 1 is that in step 2), 1 kg of graphene oxide is added in 10 kg of 98 wt% concentrated sulfuric acid, and ultrasonic dispersion is obtained for 3 h to obtain a stable dispersion, and 3000 rpm is selected for use The bottom precipitation that centrifugal 40min obtains for the first time under rotating speed, ultrasonic dispersion obtains graphene oxide classification solution, step 3) adds 110kg 98wt% concentrated sulfuric acid, step 4) finally obtains graphene oxide content and is the graphene composite paraposition of 3wt% Aramid fiber.

Embodiment 3

[0059] The specific process steps are basically the same as in Example 1 of the present invention, and the difference with Example 1 is that in step 2), 1 kg of graphene oxide is added in 20 kg of 99 wt% concentrated sulfuric acid, ultrasonic dispersion is obtained for 2 h to obtain a stable dispersion, and 7000 rpm is selected for use Secondary supernatant after centrifugal 30min again under rotating speed, ultrasonic dispersion obtains graphene oxide classification solution, step 3) adds 47kg 99wt% concentrated sulfuric acid, step 4) finally obtains graphene oxide content and is the graphene composite pair of 3wt%. aramid fiber.

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Abstract

The invention provides a high-performance graphene composite para-aramid fiber, which is mainly prepared from a graphene substance and poly-p-phenylene terephthamide; in the graphene composite para-aramid fiber, the content of the graphene substance is 5 weight percent or lower. According to the graphene composite para-aramid fiber prepared by the invention, the graphene substance can maintain higher content, graphene particles are still uniformly dispersed and uniform in size, indexes such as the tensile strength of the fiber are qualitatively improved, and an excellent antimicrobial property is additionally endowed to a para-aramid fiber material.

Description

technical field [0001] The invention relates to the field of aramid fiber processing and preparation, in particular to a high-performance graphene composite para-aramid fiber and its preparation method and application. Background technique [0002] As the most important variety of aramid fibers, para-aramid occupies an important position in the field of high-performance fibers and has been mass-produced and applied. Para-aramid has important applications in space exploration, aerospace, national defense and military industry, water and land transportation, rope optical cables, sports and leisure, etc. In addition, with the development of low-carbon economy, the application of aramid in new energy and energy saving and emission reduction will be taken seriously. [0003] Para-aramid fiber is the abbreviation of para-aramid fiber, which refers to a synthetic fiber composed of linear macromolecules composed of para-aromatic groups connected by amide bonds, of which more than 8...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/90D01F1/09D01D1/02D01D5/06D01D5/04
CPCD01D1/02D01D5/04D01D5/06D01F1/09D01F6/905
Inventor 唐一林张金柱王双成刘顶
Owner JINAN SHENGQUAN GRP SHARE HLDG CO LTD
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