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Polyester fiber and its preparation method

A technology of polyester fiber and polyester, which is applied in the field of polyester fiber and its preparation, can solve the problems of low mechanical properties and difficult biodegradability, and achieve the effect of simple preparation method, favorable promotion and application, and guaranteed application value

Active Publication Date: 2022-02-08
POLY PLASTIC MASTERBATCH SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The development of biodegradable polyester fibers, the microplastics formed during the washing and shedding process can be degraded as much as possible, thereby reducing environmental pollution, although it is possible to realize the biodegradability of fiber materials used in some specific fields in specific environments after they are discarded. However, due to the generally low mechanical properties of existing biodegradable polyester fibers, it is relatively easy to form fiber microplastics, and they do not have the conditions for biocomposting degradation when they are discharged into water systems, especially deep seas, so it is difficult to achieve them in a real sense Biodegradable; the development of fiber materials or fiber products with high strength and good wear resistance can achieve essential performance improvement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A kind of preparation method of polyester fiber, concrete steps are as follows:

[0052] (1) Preparation of raw materials;

[0053] Dibasic acid: terephthalic acid;

[0054] Diol: ethylene glycol;

[0055] Anhydride: pyromellitic anhydride;

[0056] Catalyst: antimony glycol;

[0057] A hydroxyl-terminated polysiloxane with a number average molecular weight of 1000 g / mol;

[0058] Inorganic nano-nucleating agent: barium sulfate powder with an average particle size of 20nm;

[0059] Heat stabilizer: trimethyl phosphate;

[0060] Antioxidant: Antioxidant 1010;

[0061] (2) Esterification reaction;

[0062] After mixing dibasic acid, dibasic alcohol, acid anhydride and catalyst, carry out esterification reaction, the temperature of esterification reaction is 180 ℃, the pressure is 0.5MPa, until the water output reaches 92% of the theoretical water output, the esterification product is obtained; , the molar ratio of dibasic acid and dibasic alcohol is 1:1.1; The molar...

Embodiment 2

[0085] A kind of preparation method of polyester fiber, concrete steps are as follows:

[0086] (1) Preparation of raw materials;

[0087] Dibasic acid: isophthalic acid;

[0088] Diol: propylene glycol;

[0089] Anhydride: cyclopentane tetra-acid dianhydride;

[0090] Catalyst: antimony trioxide;

[0091] A hydroxyl-terminated polysiloxane with a number average molecular weight of 2000 g / mol;

[0092] Inorganic nano-nucleating agent: barium sulfate powder with an average particle size of 40nm;

[0093] Heat Stabilizer: Alkyl Phosphate Diester;

[0094] Antioxidant: Antioxidant 168;

[0095] (2) Esterification reaction;

[0096] After mixing dibasic acid, dibasic alcohol, acid anhydride and catalyst, carry out esterification reaction, the temperature of esterification reaction is 190 ° C, the pressure is 0.4 MPa, until the water output reaches 93% of the theoretical water output, the esterification product is obtained; , the mol ratio of dibasic acid and dibasic alcoho...

Embodiment 3

[0107] A kind of preparation method of polyester fiber, concrete steps are as follows:

[0108] (1) Preparation of raw materials;

[0109]Dibasic acid: succinic acid;

[0110] Diol: butanediol;

[0111] Acid anhydride: benzophenone tetra-acid dianhydride;

[0112] Catalyst: antimony acetate;

[0113] A hydroxyl-terminated polysiloxane with a number average molecular weight of 3000 g / mol;

[0114] Inorganic nano-nucleating agent: barium sulfate powder with an average particle size of 50nm;

[0115] Heat stabilizer: Tris(nonylphenyl)phosphite;

[0116] Antioxidant: Antioxidant 616;

[0117] (2) Esterification reaction;

[0118] After mixing dibasic acid, dibasic alcohol, acid anhydride and catalyst, carry out esterification reaction, the temperature of esterification reaction is 200 ℃, the pressure is 0.3MPa, until the water output reaches 95% of the theoretical water output, the esterification product is obtained; , the mol ratio of dibasic acid and dibasic alcohol is 1...

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Abstract

The invention relates to a polyester fiber and a preparation method thereof. The preparation method is: blending a functional masterbatch with polyester and then melt spinning to obtain a polyester fiber; the preparation process of the functional masterbatch includes: mixing dibasic acid, dibasic acid, Carry out esterification reaction between polyhydric alcohol and acid anhydride to obtain esterification product whose end group is hydroxyl; mix the esterification product with modified component slurry containing hydroxyl-terminated polysiloxane, and then conduct polycondensation reaction to obtain functional masterbatch; The polyester fiber has a skin-core structure, the skin layer is a functional masterbatch, and the core layer is polyester. The preparation method of the invention is simple, the obtained polyester fiber has excellent mechanical properties and wear resistance, and less microplastics are formed in the washing process.

Description

technical field [0001] The invention belongs to the field of polyester preparation, and relates to a polyester fiber and a preparation method thereof. Background technique [0002] Polyester fiber is the basic raw material for textiles. Among them, PET polyester fiber is the representative variety. In 2020, my country's output has exceeded 50 million tons, and it is in an absolute leading position. As a basic raw material for textiles, polyester fiber plays an important role in the national economy. However, in recent years, with the increasing awareness of environmental protection, studies have found that 60% of the microplastics in our fresh water come from laundry fibers. Microfibers are shed when we do laundry, and they end up in wastewater treatment facilities, and from there into lakes and other large bodies of water. Natural materials also shed fibers in the washer and dryer, but microbes are able to digest them, which is not the case for fibers made from synthetic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92D01F1/10C08G63/695C08G63/85C08G63/86
Inventor 吉鹏王华平王朝生徐毅明徐虎明谢伟
Owner POLY PLASTIC MASTERBATCH SUZHOU
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