Preparation process of polyester for spinning filament by heat tube drafting technique

A technology of light heat pipe and silk polyester is applied in the preparation field of polyester for spinning, which can solve the problems of failing to meet product standard requirements, reducing breaking strength, etc., and achieving low boiling water shrinkage, improved crystallinity, and dyeing uniformity. Good results

Inactive Publication Date: 2003-07-02
WUJIANG SILK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of external nucleating agent in the existing ordinary bright polyester that is spun into bright bright yarn, when it is used as a raw material for producing bright bright heat pipe drawing yarn, the spun silk is easy to produce a large amount of fluff, and Decreased breaking strength, failing to meet product standard requirements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0009] SiO with a particle size of 1.5 μm and a content of 1500 ppm relative to polyester is added during polycondensation 2 Ultra-fine particles, made into polyester chips, spun 76dt / 36F trilobal special-shaped yarn at a heat pipe temperature of 170°C and a winding speed of 4800m / min, the breaking strength is 3.74CN / dtex, the boiling water shrinkage rate is 6.4%, and the dyeing is uniform Sex is 4.0 grade.

example 2

[0011] SiO with a particle size of 1 μm and a content of 1000 ppm relative to polyester is added during polycondensation 2 Ultra-fine particles, made into polyester chips, spun 55dt / 24F trilobal special-shaped yarn at a heat pipe temperature of 165°C and a winding speed of 4600m / min, the breaking strength is 3.73CN / dtex, the boiling water shrinkage rate is 5.9%, and the dyeing is uniform Sex level 4.0.

example 3

[0013] When polycondensation, add SiO with a particle size of 0.5μm; relative to the polyester content of 600ppm 2 Ultra-fine particles, made into polyester chips, spun 83dt / 36F trilobal special-shaped yarn at a heat pipe temperature of 170°C and a winding speed of 4800m / min, the breaking strength is 3.94CN / dtex, the boiling water shrinkage rate is 6.7%, and the dyeing is uniform Sex level 4.0.

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Abstract

A process for preparing the polyester used to spin high-gloss hot-tube drawn silk features the semi-continuous direct esterifying process is used, and the nucleator (SiO2 superfine particles) is used in condensatino step for high crystallizing degree. The resultant polyester is used to prepare the high-glass silk by the hot tube drawing technique. Its advantages are high fracture strength, low shrinkage in boiling water, and good hand feeling and uniform dyeing of its fabric.

Description

(1) Technical field: [0001] The invention relates to a method for preparing polyester for spinning. (two) background technology: [0002] Heat pipe drawn yarn has the advantages of low boiling water shrinkage, good evenness, uniform dyeing of fabrics, and good hand feeling, so it is widely used. Due to the lack of external nucleating agent in the existing ordinary bright polyester that is spun into bright bright yarn, when it is used as a raw material for producing bright bright heat pipe drawing yarn, the spun silk is easy to produce a large amount of fluff, and The breaking strength is reduced and cannot meet the product standard requirements. (3) Contents of the invention: [0003] The present invention aims to solve the above-mentioned problems that occur when the existing ordinary bright polyester is used as a raw material to spin a large bright yarn by a heat pipe drawing method, and provides a preparation of a polyester that is spun into a large bright heat pipe dr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/78
Inventor 王勋忠戴建平杨晓春
Owner WUJIANG SILK
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