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Method for preparing high-strength low-extension type polyester industrial yarn

A low-stretch, industrial yarn technology, applied in the direction of single-component polyester rayon, stretch spinning, bundling of newly ejected yarns, etc., can solve the problem of high fiber unevenness and low elongation at break , fast volatilization of oil and other problems, to achieve the effect of high volatilization point, improve compatibility and improve processing performance

Active Publication Date: 2018-04-20
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, the oil agent used in the preparation of high-strength and low-elongation polyester at this stage volatilizes quickly and is easy to bond on the surface of the fiber, resulting in high unevenness and poor performance of the prepared fiber
[0005] Therefore, researching a kind of preparation method that can make high-strength and low-elongation polyester industrial yarn with high breaking strength and low elongation at break has become a problem to be solved urgently.

Method used

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  • Method for preparing high-strength low-extension type polyester industrial yarn
  • Method for preparing high-strength low-extension type polyester industrial yarn
  • Method for preparing high-strength low-extension type polyester industrial yarn

Examples

Experimental program
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Effect test

Embodiment 1

[0043] A preparation method of high-strength low-stretch polyester industrial yarn, the specific steps are as follows:

[0044] (1) Oil preparation for oiling: 2-hydroxymethyl-12-crown-4, potassium dodecyl phosphate, trimethylolpropane laurate and sodium dodecylsulfonate are mixed at room temperature After mixing evenly, add it to 9# mineral oil and stir evenly at 40°C for 1 hour to obtain an oil agent; in parts by weight, the addition amount of each component is as follows: 2 parts of 9# mineral oil; trimethylolpropane lauric acid 10 parts of ester; 90 parts of 2-hydroxymethyl-12-crown-4; 8 parts of potassium dodecyl phosphate; 3 parts of sodium dodecyl sulfonate. The content of the crown ether in the prepared oil is 79.6wt%. The high temperature resistance of the oil is excellent. After heat treatment at 200°C for 2 hours, the thermal weight loss is 14.5wt%. The viscosity of the oil is low, at (50 ± 0.01) At ℃, the kinematic viscosity is 29.6mm 2 / s, the kinematic viscosit...

Embodiment 2

[0049] A preparation method of high-strength low-stretch polyester industrial yarn, the specific steps are as follows:

[0050] (1) Preparation of oil agent for oiling: 15-crown ether-5 and isomeric tridecyl alcohol polyoxyethylene ether phosphate potassium salt, trimethylolpropane laurate and sodium pentadecyl sulfonate at room temperature After mixing evenly under low pressure, add it to 10# mineral oil and stir evenly at 43°C for 1.5h to obtain an oil agent; the addition amount of each component is as follows in parts by weight: 2 parts of 10# mineral oil; trimethylolpropane lauryl 15 parts of acid ester; 70 parts of 15-crown ether-5; 10 parts of isomeric tridecyl polyoxyethylene ether phosphate potassium salt; 7 parts of sodium pentadecylsulfonate. The content of crown ether in the prepared oil is 67.30wt%. The oil has excellent high temperature resistance. After heat treatment at 200°C for 2 hours, the thermal weight loss is 13wt%. The viscosity of the oil is low. When t...

Embodiment 3

[0055] A preparation method of high-strength low-stretch polyester industrial yarn, the specific steps are as follows:

[0056] (1) Preparation of oil for oiling: 2-hydroxymethyl-15-crown-5, potassium salt of tetradecyl phosphate, trimethylolpropane laurate and sodium pentadecylsulfonate in After mixing evenly at room temperature, add it to 11# mineral oil and stir evenly at 48°C for 3 hours to obtain an oil agent; in parts by weight, the addition amount of each component is as follows: 8 parts of 11# mineral oil; trimethylolpropane lauryl 10 parts of acid ester;

[0057] 2-Hydroxymethyl-15-crown-585 parts; Tetradecyl phosphate potassium salt 11 parts; Sodium pentadecylsulfonate 5 parts. The content of crown ether in the prepared oil is 70.83wt%. The oil has excellent high temperature resistance. After heat treatment at 200°C for 2 hours, the thermal weight loss is 11wt%. The viscosity of the oil is low. When the kinematic viscosity is 30.1mm 2 / s, the kinematic viscosity a...

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Abstract

The invention relates to a method for preparing high-strength low-extension type polyester industrial yarn. The method comprises the steps of performing solid-phase polycondensation and viscosity increase, melting, metering, extrusion, cooling, oiling, stretching, heat setting and winding on polyester to obtain the high-strength low-extension type polyester industrial yarn. Oil for oiling containscrown ethers, the content of the crown ethers is 67.30-85.58wt%, and by combination of the adjustment of spinning process parameters and stretch and heat setting process parameters, when the oil is used, the oil is prepared with water into emulsion with a concentration of 14-18 wt%, the breaking strength of the high-strength low-extension type polyester industrial yarn is larger than or equal to8.3 cN / dtex, and the central value of the elongation at break is 11.0-12.0%. The method is simple and reasonable, and an obtained fiber has the advantages of high breaking strength and low elongationat break and has excellent popularization value.

Description

technical field [0001] The invention belongs to the field of fiber preparation, and relates to a preparation method of high-strength and low-elongation polyester industrial yarn. Background technique [0002] Since the appearance of polyethylene terephthalate (PET) fiber, it has developed rapidly because of its excellent performance, and its output has become the crown of synthetic fiber in the world. Polyester fiber has a series of excellent properties such as high breaking strength, high elastic modulus, moderate resilience, excellent heat setting performance, good heat resistance and light resistance, acid resistance, alkali resistance and corrosion resistance, and the fabric prepared from it has wrinkle resistance. And crispness and other advantages, so polyester fiber is widely used in clothing and home textiles and other fields. [0003] Due to the small dielectric constant, low moisture regain and high friction coefficient of most PET fibers, spinning oil must be use...

Claims

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Application Information

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IPC IPC(8): D01D5/08D01D5/088D01D5/096D01D5/12D01D7/00D01D10/02D01F6/62D01F6/92D01F11/08
CPCD01D5/08D01D5/088D01D5/096D01D5/12D01D7/00D01D10/02D01F6/62D01F6/92D01F11/08
Inventor 邵义伟王丽丽龚斌科王力军
Owner JIANGSU HENGLI CHEM FIBER
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