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A kind of preparation method of graphene modified polyester chips

A technology of graphene modification and polyester chips, which is applied in the direction of single-component polyester artificial filaments, conductive/antistatic filaments, etc., can solve the problem of polyester fiber breakage, weak mechanical properties of polyester fibers, graphene Efficacy cannot be fully reflected and other problems, to achieve long-lasting effect, good washability, and good antistatic effect

Active Publication Date: 2021-09-03
福建省银河服饰有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, the above methods all melt-blend modified graphene and polyester chips, which is a kind of physical blending. There is a problem of graphene reuniting in polyester chips. On the one hand, agglomeration is to make graphene The effect cannot be fully reflected. On the other hand, the part where the graphene aggregates is the weak point of the mechanical properties of the polyester fiber, which is easy to cause the polyester fiber to break under the action of external force.

Method used

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  • A kind of preparation method of graphene modified polyester chips

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Add 100 parts of purified terephthalic acid, 0.3 parts of polyhydroxy-modified graphene 1 and 120 parts of ethylene glycol in a container with a stirring bar, a thermometer and a flow divider, and carry out esterification reaction at 250-255 °C, and the reaction The process continues to remove the generated water, measure the viscosity of the reaction intermediate, monitor the esterification rate of the reaction, react until the esterification rate reaches more than 92%, and lower the temperature to obtain the esterification intermediate 1.

[0043] Add 100 parts of esterification intermediate 1 and 320 ppm of antimony trioxide into a container with a stirring rod, a thermometer and a vacuum pump, carry out polycondensation reaction at 267° C. for 1.5 hours under a negative pressure of <6000 Pa, and then adjust the negative pressure to 70Pa, react at 270°C for 4 hours, lower the temperature, cast a belt, cool, and pelletize to obtain graphene-modified polyester chip 1. ...

Embodiment 2

[0045] Add 100 parts of purified terephthalic acid, 0.7 parts of polyhydroxy-modified graphene 2 and 110 parts of ethylene glycol in a container with a stirring bar, a thermometer and a flow divider, and carry out esterification reaction at 255-260 °C, and the reaction The process continues to remove the generated water, measure the viscosity of the reaction intermediate to monitor the esterification rate of the reaction, react until the esterification rate is at least 92%, and lower the temperature to obtain the esterification intermediate 2.

[0046] Add 100 parts of esterification intermediate 2 and 350ppm of antimony trioxide into a container with a stirring rod, a thermometer and a vacuum pump connected, under a negative pressure of <6000Pa, carry out polycondensation reaction at 270°C for 1.5 hours, and then adjust the negative pressure to 66Pa , reacted at 275° C. for 3 hours, lowered the temperature, cast a belt, cooled, and cut into pellets to obtain graphene-modified ...

Embodiment 3

[0048] Add 100 parts of purified terephthalic acid, 1.1 parts of polyhydroxy-modified graphene 3 and 108 parts of ethylene glycol into a container with a stirring bar, a thermometer and a flow divider, and carry out esterification reaction at 270-275 °C, and the reaction The process continues to remove the generated water, measure the viscosity of the reaction intermediate to monitor the esterification rate of the reaction, react until the esterification rate is at least 92%, and lower the temperature to obtain the esterification intermediate 3.

[0049] Add 100 parts of esterification intermediate 3 and 380ppm antimony trioxide into a container with a stirring rod, a thermometer and a vacuum pump connected, under a negative pressure of <6000Pa, carry out polycondensation reaction at 280°C for 1 hour, and then adjust the negative pressure to 60Pa, React at 285°C for 2 hours, lower the temperature, cast a belt, cool, and cut into pellets to obtain graphene-modified polyester chi...

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Abstract

The invention relates to the field of synthetic fiber modification, in particular to a method for preparing graphene-modified polyester chips. The invention adopts α-alkenyl silane coupling agent to modify Hummers method graphene oxide, and then performs mercapto-ene click chemical reaction with 3-mercapto-1,2-propanediol to prepare surface-modified modified graphite oxide with multiple hydroxyl groups After reduction, modified graphene with surface-modified polyhydroxyl groups is obtained; modified graphene is added to purified terephthalic acid and ethylene glycol for polycondensation reaction to obtain graphene-modified polyester chips. The fabric woven from the fiber obtained by spinning the modified polyester chip of the present invention has good electrical conductivity, improves the antistatic effect of the fabric, and has a long-lasting antistatic effect.

Description

technical field [0001] The invention relates to the field of synthetic fiber modification, in particular to a method for preparing graphene-modified polyester chips. Background technique [0002] Polyester fiber (polyester fiber), commonly known as "polyester", referred to as PET fiber, is a synthetic fiber obtained by spinning polyester formed by polycondensation of organic dibasic acid and dibasic alcohol. The biggest advantage of polyester fiber is that it has good wrinkle resistance and shape retention, high strength and elastic recovery ability, and it is durable, wrinkle-resistant, non-ironing, and non-sticky. [0003] With the continuous development of science and technology and the continuous improvement of people's living standards, people pay more and more attention to the functionality of clothing. Clothing is no longer only used to cover up shame and protect against cold. Functional textiles such as antibacterial, health care, UV protection, and antistatic are b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/183C08G63/78D01F6/92D01F1/09
CPCC08G63/183C08G63/78D01F1/09D01F6/92
Inventor 刘云剑
Owner 福建省银河服饰有限公司