Elastic PET composite fiber and method for preparing elastic PET composite fiber

A composite elastic fiber, composite fiber technology, applied in fiber processing, conjugated synthetic polymer artificial filament, textiles and papermaking, etc.

Inactive Publication Date: 2014-11-12
JIANGSU SHENGHONG CHEM FIBRE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, most of the research on elastic fibers is made of two different components of polyester or modified polyester, the production cost is high, and mass production is not possible

Method used

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  • Elastic PET composite fiber and method for preparing elastic PET composite fiber

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Types of PET slices Viscosity (dL / g) parts by mass low viscosity PET 0.47 30 High viscosity PET 0.82 70

[0053] Table 5 Slice type and composition ratio table.

[0054] Zone 1 temperature ℃ Second zone temperature ℃ Three zone temperature ℃ Four zone temperature ℃ low viscosity components 266 268 270 269 high viscosity components 279 288 288 286

[0055] Table 6 Temperature control table for each area.

Embodiment 2

[0057] Types of PET slices Viscosity (dL / g) parts by mass low viscosity PET 0.47 50 High viscosity PET 0.82 50

[0058] Table 7 Types of slices and composition ratio table.

[0059] Zone 1 temperature ℃ Second zone temperature ℃ Three zone temperature ℃ Four zone temperature ℃ low viscosity components 266 268 269 268 high viscosity components 279 288 286 284

[0060] Table 8 Temperature control table for each area.

Embodiment 3

[0062] Types of PET slices Viscosity (dL / g) parts by mass low viscosity PET 0.52 50 High viscosity PET 0.89 50

[0063] Table 9 Slice type and component ratio table.

[0064] Zone 1 temperature ℃ Second zone temperature ℃ Three zone temperature ℃ Four zone temperature ℃ low viscosity components 268 270 271 270 high viscosity components 281 290 289 288

[0065] Table 10 Temperature control table for each area.

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Abstract

The invention discloses an elastic PET composite fiber and a method for preparing the elastic PET composite fiber. The elastic PET composite fiber is characterized in that the elastic PET composite fiber is provided with parallel and composite structures, the parallel and composite structures have the same component which is PET, two different kinds of PET are adopted, one kind of PET is low-viscosity PET with the viscosity ranging from 0.47 dL / g to 0.65 dL / g, and the other kind of PET is high-viscosity PET with the viscosity ranging from 0.82 dL / g to 1.05 dL / g. According to the elastic PET composite fiber and the method for preparing the elastic PET composite fiber, PET slices with different viscosities are adopted, the PET parallel and composite fiber is prepared by adjusting the temperature of a spinning assembly, the obtained composite fiber is high in elasticity and high in strength, can serve as an elastic polyester yarn product and is low in production cost, the elasticity and the hand feeling of polyester fabric can be improved, the elastic PET composite fiber is resistant to chlorine bleaching, and the chemical stability of the elastic PET composite fiber is high.

Description

[0001] technical field [0002] The invention relates to a preparation method of a composite chemical fiber, more particularly to a preparation method of a PET composite elastic fiber. [0003] Background of the invention [0004] The current elastic fiber is represented by spandex, but spandex has many deficiencies that need to be improved, such as chlorine bleaching after finishing, poor shaping, unstable elasticity, difficult to take care of, easy to foam, excessive elasticity, stuffy wearing, etc. DuPont has developed polytrimethylene terephthalate (PTT), which is a kind of elastic polyester fiber, which can partially replace spandex. However, due to the cost of raw material monomers and other reasons, it cannot be mass-produced at this stage. In addition, there are polybutylene terephthalate (PBT), etc., which have not yet reached the mass production requirements. Polyethylene terephthalate (PET) is currently the polyester fiber with the highest output, and it is als...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01D5/32
Inventor 张叶兴梅锋蒋学谢凌宇林铨田会双
Owner JIANGSU SHENGHONG CHEM FIBRE CO LTD
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