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Melt direct spinning polyester fiber and production method thereof

A melt direct spinning and polyester technology, applied in the field of polyester fiber, can solve the problems of long process, high energy consumption, unstable fiber strength, etc., and achieve the effects of high yield, simple process, and easy spinning and forming.

Pending Publication Date: 2022-02-25
福建百宏聚纤科技实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyester fiber, commonly known as "polyester", is a synthetic fiber obtained by spinning polyester obtained by polycondensation of organic dibasic acid and dibasic alcohol, referred to as PET fiber, which belongs to polymer compounds. The technological progress and competitiveness of the chemical fiber industry with polyester as the main body have been greatly improved, and the market demand for various functional and differentiated new varieties with excellent performance and unique style is also rapidly expanding. However, most chemical products adopt the process of chip spinning. The polyester chips are dried, heated by the screw and then melted and extruded to the spinning box for fiber production. However, the chip spinning technology has disadvantages such as high energy consumption, long process, and unstable fiber strength.

Method used

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  • Melt direct spinning polyester fiber and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: as figure 1 , the present invention provides a kind of melt direct-spun polyester fiber, is formed by polyester melt and masterbatch melt by mass ratio 15:2 mixed spinning to form described polyester melt by weight, and its raw material composition comprises : 110 parts of terephthalic acid, 95 parts of ethylene glycol, 0.1 part of pentaerythritol, 1 part of heat stabilizer, 2 parts of lubricant, 0.5 part of light stabilizer, 0.5 part of antioxidant and 3 parts of catalyst; The body is measured in parts by weight, and its raw material composition includes: 15 parts of polyethylene, 6 parts of polyvinyl alcohol, 4 parts of reactive monomers containing hydrophilic groups, 2 parts of coupling agent and 3 parts of coloring agent.

[0026] A preferred embodiment, the heat stabilizer is trimethyl phosphate, the lubricant is paraffin, the light stabilizer is light stabilizer 3853, and the antioxidant is β-(3,5-di tert-butyl-4-hydroxyphenyl) propionate octadecano...

Embodiment example

[0027] In a preferred embodiment, the reactive monomer containing a hydrophilic group is isopropylene glycol, and the coupling agent is a silane coupling agent.

[0028] A kind of production method of melt direct spinning polyester fiber, comprises the steps:

[0029] S1. Put terephthalic acid and ethylene glycol into the esterification tank according to the ratio to carry out esterification reaction to obtain an esterification product, and then add pentaerythritol, heat stabilizer, lubricant, light stabilizer and antioxidant to the esterification product Carry out polycondensation reaction with catalyst to obtain polyester melt;

[0030] S2, adding polyethylene, polyvinyl alcohol, reactive monomers containing hydrophilic groups, coupling agents and coloring agents into the reaction kettle according to the ratio for melting and mixing reaction to obtain a masterbatch melt;

[0031] S3, introducing the polyester melt and the color masterbatch melt into the dynamic mixer to mix...

Embodiment 2

[0036] Embodiment 2: as figure 1 , the invention provides a melt direct spinning polyester fiber, which is formed by mixed spinning of polyester melt and color masterbatch melt at a mass ratio of 15:4, and the polyester melt has a raw material composition of Including: 120 parts of terephthalic acid, 105 parts of ethylene glycol, 0.2 part of pentaerythritol, 2 parts of heat stabilizer, 3 parts of lubricant, 0.5 part of light stabilizer, 1 part of antioxidant and 4 parts of catalyst; the color masterbatch The melt is calculated in parts by weight, and its raw material composition includes: 17 parts of polyethylene, 7 parts of polyvinyl alcohol, 5 parts of reactive monomers containing hydrophilic groups, 3 parts of coupling agent and 3 parts of coloring agent.

[0037] A preferred embodiment, the heat stabilizer is triphenyl phosphate, the lubricant is polyethylene wax, the light stabilizer is light stabilizer 622, and the antioxidant is β-(3,5 - di-tert-butyl-4-hydroxyphenyl) ...

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Abstract

The invention discloses a melt direct spinning polyester fiber and a production method thereof, and belongs to the technical field of polyester fibers. The melt direct spinning polyester fiber is formed by blending and spinning a polyester melt and a color master batch melt according to the mass ratio of (15-20): (2-5); the polyester melt is prepared from the following raw materials in parts by weight: 100-150 parts of terephthalic acid, 90-130 parts of ethylene glycol, 0.1-0.5 part of pentaerythritol, 1-5 parts of a heat stabilizer, 2-5 parts of a lubricant, 0.5-2 parts of a light stabilizer, 0.5-2 parts of an antioxidant and 3-8 parts of a catalyst; and the color master batch melt comprises the following raw materials in parts by weight: 15-25 parts of polyethylene, 5-10 parts of polyvinyl alcohol, 3-8 parts of a reactive monomer containing a hydrophilic group, 2-5 parts of a coupling agent and 2-5 parts of a coloring agent. The method comprises the following steps: introducing the polyester melt and the color master batch melt into a dynamic mixer, uniformly mixing, tackifying, introducing the tackified mixed melt into a spinning box, metering, filtering, extruding by a spinneret plate, cooling by cross air blowing, bundling and oiling, carrying out network treatment, stretching and heat setting, and winding to obtain a product.

Description

technical field [0001] The invention relates to the technical field of polyester fibers, in particular to a melt direct spinning polyester fiber and a production method thereof. Background technique [0002] Polyester fiber, commonly known as "polyester", is a synthetic fiber obtained by spinning polyester obtained by polycondensation of organic dibasic acid and dibasic alcohol, referred to as PET fiber, which belongs to polymer compounds. The technological progress and competitiveness of the chemical fiber industry with polyester as the main body have been greatly improved, and the market demand for various functional and differentiated new varieties with excellent performance and unique style is also rapidly expanding. However, most chemical products adopt the process of chip spinning. The fiber is produced by drying the polyester chips, heating the screw, and then extruding them into the spinning box for fiber production. However, the chip spinning technology has disadvan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/10D01D1/04D01D5/088D01D5/096D02J1/08D02J1/22
CPCD01F6/92D01F1/10D02J1/228D02J1/224D01D1/04D01D5/088D01D5/096D02J1/08
Inventor 刘智敏陈阿斌鲁传旺
Owner 福建百宏聚纤科技实业有限公司