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Method using PET waste silk to prepare functional antistatic polyester staple fibers

A polyester staple fiber and antistatic technology, which is applied in the field of polyester staple fiber processing, can solve the problems of affecting the safety of polyester textiles, sudden drop in antistatic performance, and limited antistatic performance, so as to avoid sudden drop in antistatic performance and improve recycling Efficiency, improve the effect of antistatic performance

Inactive Publication Date: 2019-08-23
ANHUI SHUANGFAN HIGH FIBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the electrostatic problem of polyester has directly affected the safety of the production, processing and application of polyester textiles, and even restricted the development of polyester to high-end application fields.
At present, polyester fabrics are usually finished with antistatic treatment liquid to endow them with antistatic properties, but the antistatic properties of treated polyester fabrics are limited, and the antistatic properties of polyester fabrics will drop sharply after washing during use Therefore, the present invention attempts to endow the polyester staple fiber with excellent antistatic performance and improve its washing resistance by antistatic treatment in the recycling process of PET waste silk.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Crushing process: use a crusher to break 5kg of PET waste silk into PET particles with a particle size of 10±5mm;

[0042] (2) Purification process: Pass PET particles through a microwave field, first use a rotating microwave field to remove water and oil, and then use a pulsed microwave field to degrade, water and oil are removed by vacuuming; microwave frequency 915±25MHz, rotation speed 300rpm , microwave pulse power 20kW, vacuum degree 1000Pa;

[0043] (3) Slurry mixing process: the PET particles purified by the microwave in the previous step are made into PET powder with a particle size of 50±10 μm by an ultrafine pulverizer, and the PET powder is sent into the slurry mixing tank, and then 2kg of ethylene glycol is added, 200r Stir for 5 minutes at / min to form a uniform slurry;

[0044] (4) Alcoholysis process: Put the prepared slurry into the esterification kettle, add 30g of tetrabutyl titanate, and carry out alcoholysis reaction under the protection of nit...

Embodiment 2

[0050] (1) Crushing process: use a crusher to break 5kg of PET waste silk into PET particles with a particle size of 10±5mm;

[0051] (2) Purification process: Pass PET particles through a microwave field, first use a rotating microwave field to remove water and oil, and then use a pulsed microwave field to degrade, water and oil are removed by vacuuming; microwave frequency 915±25MHz, rotation speed 300rpm , microwave pulse power 20kW, vacuum degree 1000Pa;

[0052] (3) Slurry mixing process: the PET particles purified by the microwave in the previous step are made into PET powder with a particle size of 50±10 μm by an ultrafine pulverizer, and the PET powder is sent into the slurry mixing tank, and then 2kg of ethylene glycol is added, 200r Stir for 5 minutes at / min to form a uniform slurry;

[0053] (4) Alcoholysis process: Put the prepared slurry into the esterification kettle, add 30g of tetrabutyl titanate, and carry out alcoholysis reaction under the protection of nit...

Embodiment 3

[0079] (1) Crushing process: use a crusher to break 5kg of PET waste silk into PET particles with a particle size of 10±5mm;

[0080] (2) Purification process: Pass PET particles through a microwave field, first use a rotating microwave field to remove water and oil, and then use a pulsed microwave field to degrade, water and oil are removed by vacuuming; microwave frequency 915±25MHz, rotation speed 300rpm , microwave pulse power 20kW, vacuum degree 1000Pa;

[0081] (3) Slurry mixing process: The PET particles purified by the microwave in the previous step are made into PET powder with a particle size of 50±10 μm by an ultrafine pulverizer, and the PET powder is sent into the slurry mixing tank, and then 2kg of ethylene glycol and 0.25kg of ethylene glycol are added. Auxiliary dispersing agent, stirred at 200r / min for 5min, made into a uniform slurry;

[0082] (4) Alcoholysis process: Put the prepared slurry into the esterification kettle, add 30g of tetrabutyl titanate, and...

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Abstract

The invention discloses a method using PET waste silk to prepare functional antistatic polyester staple fibers and relates to the technical field of polyester staple fiber processing. The method includes the steps of firstly, crushing; secondly, purifying; secondly, preparing slurry; fourthly, performing alcoholysis; fifthly, esterifying; sixthly, performing polycondensation; seventhly, melting and filtering; eighthly, spinning. The method has the advantages that the natural-level polyester products are obtained through the alcoholysis, esterification and polycondensation reaction, and the PETwaste silk is recycled in a high additional value manner.

Description

[0001] Technical field: [0002] The invention relates to the technical field of polyester staple fiber processing, in particular to a method for preparing functional antistatic polyester staple fiber by utilizing PET waste silk. [0003] Background technique: [0004] With the rapid growth of domestic chemical fiber production capacity, the amount of waste silk produced in the field of polyester industrial yarn cannot be underestimated. In order to reduce the burden on the environment, it is necessary to recycle waste silk. In the conventional waste silk recycling process, the waste silk is firstly cut and crushed to make PET powder semi-finished products, and then the waste silk is quickly dewatered and degreased by microwave purification, and then crushed to obtain PET powder. PET powder can be used as raw material for polyester chemical fiber production. After the pulping process, it is transported into the esterification reactor. In the esterification reactor, the glycol ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/09C08G63/183C08G63/181
CPCC08G63/181C08G63/183D01F1/09D01F6/92
Inventor 施义车
Owner ANHUI SHUANGFAN HIGH FIBER CO LTD