A preparation method of high-strength medium-shrink polyester industrial yarn

A technology of industrial yarn and polyester, applied in the direction of single-component polyester rayon filament, complete equipment for producing rayon, chemical post-treatment of synthetic polymer rayon filament, etc., can solve the problem of high fiber unevenness and poor performance , fiber bonding and other problems, to achieve the effect of high oil film strength, improved compatibility and low viscosity

Active Publication Date: 2020-01-14
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, the oil agent used in the preparation of high-strength medium-shrinking polyester industrial yarns at this stage volatilizes quickly and is easy to bond on the surface of the fibers, resulting in high unevenness and poor performance of the prepared fibers

Method used

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  • A preparation method of high-strength medium-shrink polyester industrial yarn
  • A preparation method of high-strength medium-shrink polyester industrial yarn
  • A preparation method of high-strength medium-shrink polyester industrial yarn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A preparation method of high-strength medium-shrink polyester industrial yarn, the specific steps are as follows:

[0048] (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 viscos...

Embodiment 2

[0053] A preparation method of high-strength medium-shrink polyester industrial yarn, the specific steps are as follows:

[0054] (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...

Embodiment 3

[0059] A preparation method of high-strength medium-shrink polyester industrial yarn, the specific steps are as follows:

[0060] (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;

[0061] 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...

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Abstract

The invention relates to a preparation method of high-strength and medium-shrinkage polyester industrial yarn. Polyester is subjected to solid phase polycondensation and viscosity increasing, melting,metering, extrusion, cooling, oiling, stretching, heat setting and winding to obtain the high-strength and medium-shrinkage polyester industrial yarn. An oil agent used for oiling contains crown ether, and the content of crown ether is 67.30-85.58 wt%. When the oil agent is used, the oil agent is prepared into emulsion with the concentration of 13-20 wt%. The preparation method is simple and reasonable, the prepared high-strength and medium-shrinkage polyester industrial yarn has a breaking strength equal to or more than 8.1 cN / dtex, the dry heat shrinkage rate under conditions of 177 DEG C,10 min and 0.05 cN / dtex is 6.0+ / -1.2 %, the intrinsic viscosity of polyester after solid phase polycondensation and viscosity increasing is 1.0-1.2 dL / g, and the application prospect is very promising.

Description

technical field [0001] The invention belongs to the field of fiber preparation, and relates to a preparation method of high-strength medium-shrink 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. It is widely used in the fields of fiber, bottle packaging, film and sheet, etc., with the advantages of good stiffness and good stiffness. The output is increasing year by year, and the industry status has been significantly improved. [0003] Due to the small di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D13/00D01D5/096D01F6/62D01F11/08
CPCD01D5/096D01D13/00D01F6/62D01F11/08
Inventor 王山水孙晓华陈瑞李晓林
Owner JIANGSU HENGLI CHEM FIBER
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