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Preparation method of graphene-modified polyethylene terephthalate (PET) blend fiber

A graphene modified and blended fiber technology, which is applied in the field of chemical fibers, can solve the problems of poor dispersion and achieve high oil absorption, high impact resistance, and low preparation costs

Active Publication Date: 2020-09-15
浙江双兔新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention is to overcome the problem of poor dispersion in the process of graphene modified fiber in the prior art, and provides a preparation method of graphene modified PET blended fiber. On the one hand, by improving the dispersion of graphene sheet itself To improve the uniformity of graphene distribution in the composite fiber, to achieve the composite fiber of graphene modified PET with excellent performance, the fiber itself has good mechanical properties; on the other hand, by cutting the graphene masterbatch and PET chips are spun with a composite spinneret to produce a graphene-modified composite fiber that combines high elasticity, high refolding, high oil absorption, high impact resistance, antistatic, antibacterial, and far-infrared properties of polyester. The preparation process is simple and the cost is saved

Method used

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  • Preparation method of graphene-modified polyethylene terephthalate (PET) blend fiber

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preparation example Construction

[0038] A kind of preparation method of graphene modified PET blended fiber, comprises the following steps:

[0039] 1) Preparation of modified graphene: Add graphite and sodium nitrate to a round bottom flask under ice bath conditions, pour concentrated sulfur and stir to form a paste, slowly add potassium permanganate, control the temperature not to exceed 20°C, and stir for 1.5 -2h. Then the temperature was raised to 35-40°C and kept for 2-2.5h. Add distilled water dropwise and raise the temperature to 98-100°C, at which time a golden yellow suspension appears. Add hydrogen peroxide while hot, pour into distilled water, and ultrasonically disperse for 1-1.2h to obtain a graphene oxide mixture. Slowly add the cationic modifier DMSO and / or tributylphosphine containing long carbon chains to the above mixture, and stir for 10- After 15 minutes, a reddish-brown precipitate was obtained, separated by centrifugation, washed alternately with hydrochloric acid solution and distille...

Embodiment 1

[0046] A kind of preparation method of graphene modified PET blended fiber, comprises the following steps:

[0047] 1) Preparation of modified graphene: Add graphite and sodium nitrate to a round bottom flask under ice bath conditions, pour concentrated sulfur into it and stir to form a paste, slowly add potassium permanganate, control the temperature at 15°C, and stir for 1.8h . Then the temperature was raised to 37°C and kept for 2.3h. Distilled water was added dropwise, and the temperature was raised to 99°C, at which point a golden yellow suspension appeared. Add hydrogen peroxide while hot, pour into distilled water, and ultrasonically disperse for 1.1 hours to obtain a graphene oxide mixture. Slowly add the cationic modifier DMSO and / or tributylphosphine containing long carbon chains to the above mixture, and stir for 12 minutes to obtain a reddish-brown color The precipitate was separated by centrifugation, washed alternately with hydrochloric acid solution and distil...

Embodiment 2

[0054] The setting and working principle of this embodiment are the same as that of Embodiment 1, the difference is that:

[0055] A kind of preparation method of graphene modified PET blended fiber, comprises the following steps:

[0056] 1) Preparation of modified graphene: Add graphite and sodium nitrate to a round bottom flask under ice bath conditions, pour concentrated sulfur and stir to form a paste, slowly add potassium permanganate, control the temperature not to exceed 20°C, and stir for 1.5 -2h. Then the temperature was raised to 35-40°C and kept for 2-2.5h. Add distilled water dropwise and raise the temperature to 98-100°C, at which time a golden yellow suspension appears. Add hydrogen peroxide while hot, pour into distilled water, and ultrasonically disperse for 1-1.2h to obtain a graphene oxide mixture. Slowly add the cationic modifier DMSO and / or tributylphosphine containing long carbon chains to the above mixture, and stir for 10- After 15 minutes, a reddish...

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Abstract

The invention relates to the field of chemical fiber. Aiming at the problem of poor dispersibility in the graphene-modified fiber process in the prior art, the invention discloses a preparation methodof a graphene-modified polyethylene terephthalate (PET) blend fiber. The preparation method of the graphene-modified PET blend fiber comprises the following preparation steps of (1) modifying graphene by using a cationic modifier; (2) preparing graphene-modified slices: blending the modified cationic graphene, a modifier and PET slice powder; (3) melting: melting PET slices and the graphene-modified slices; (4) blending: spraying two spinning melts from a composite spinneret so as to form the blend fiber; and (5) carrying out aftertreatment: cooling, oiling, stretching for setting and windingthe blend fiber. Through improving the dispersibility of a graphene slice layer, the uniformity of the graphene in the composite fiber is improved, the graphene-modified PET composite fiber with an excellent performance is obtained, and the fiber has a favorable mechanical property; and through spinning the graphene masterbatch slices and the PET slices through the composite spinneret, the four-leaf clover-shaped composite fiber is prepared.

Description

technical field [0001] The invention relates to the field of chemical fibers, in particular to a method for preparing graphene-modified PET blended fibers. Background technique [0002] Graphene is a new type of carbon material with excellent properties such as thermal conductivity, electrical conductivity, and good mechanical strength. It is praised by researchers at home and abroad as the most potential material in the 21st century. Because graphene has many outstanding properties, it is widely used in various fields such as chemistry, composite fibers, and catalyst carriers. my country is rich in graphite reserves, and has formed a series of comprehensive industries, such as mining, processing, and quality purification. Now my country's annual output of graphite has become the first in the world, about half of the world's total output, and the research and preparation process of graphene is also constantly developing, improving, and maturing. Therefore, graphene is used ...

Claims

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Application Information

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IPC IPC(8): D01F8/14D01F1/09D01F1/10D01D5/34D01D5/08
CPCD01F8/14D01F1/09D01F1/103D01D5/34D01D5/08
Inventor 李皓岩
Owner 浙江双兔新材料有限公司
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