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Polyester composition and elastic fiber and its preparation method

An elastic fiber and composition technology, applied in the field of polymer materials, can solve the problems of inferior material elasticity and low elastic force value, achieve moderate elasticity and strength, improve breaking strength, and have good application prospects.

Active Publication Date: 2022-06-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The elasticity of this type of fiber can be controlled by the preparation process, but the elastic force value caused by the helix is ​​very low, usually far less than the elasticity brought by the material itself
At present, there is still a lack of such an elastic fiber in the market. It has moderate elasticity and strength on the basis of low cost, and its performance can be adjusted in a wide range to meet the needs of diverse products.

Method used

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  • Polyester composition and elastic fiber and its preparation method
  • Polyester composition and elastic fiber and its preparation method
  • Polyester composition and elastic fiber and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0034] In the present invention, all of the polyester A, the polyester B and the polyester C may be at least one of random copolymers, alternating copolymers, block copolymers and graft copolymers, preferably For random copolymers and / or block copolymers. The sources of the polyester A, the polyester B and the polyester C are not particularly limited in the present invention, and they can be obtained by conventional means in the art, commercially available, or can be obtained according to the examples in CN100429256C Prepared by the methods disclosed in B13-B21. Specifically, the preparation method of the polyester A comprises the following steps:

[0035] (1) in an inert atmosphere, the monomer A and the monomer B are reacted in the presence of the first catalyst;

[0036] (2) in an inert atmosphere, the monomer C and the monomer D are reacted in the presence of the first catalyst;

[0037] (3) the reaction product obtained by step (1) and the reaction product obtained by ...

Embodiment 1

[0073] This example is used to illustrate the elastic fiber provided by the present invention and its preparation method.

[0074] (1) Preparation of polyester composition

[0075] Under the condition of stirring (the stirring speed is 10r / min, the time is 10min), 150g of butylene terephthalate-butylene succinate copolyester A (weight average molecular weight is 130,000, wherein, in Based on the total number of moles of butylene phthalate repeating units and butylene succinate repeating units, the content of butylene terephthalate repeating units is 30 mol%) particles, 30g butylene terephthalate -Butanediol succinate copolyester B (weight average molecular weight is 100,000, wherein, based on the total number of moles of butylene terephthalate repeating units and butylene succinate repeating units, terephthalic acid The content of butanediol repeating units is 10 mol%) particles, 20 g of butanediol terephthalate-butanediol adipate copolyester C (weight average molecular weigh...

Embodiment 2

[0079] This example is used to illustrate the elastic fiber provided by the present invention and its preparation method.

[0080] (1) Preparation of polyester composition

[0081] Under the condition of stirring (the stirring speed is 10r / min and the time is 10min), 186g of butylene terephthalate-butylene succinate copolyester A (weight average molecular weight is 130,000, wherein, in Based on the total number of moles of butylene phthalate repeating units and butylene succinate repeating units, the content of butylene terephthalate repeating units is 30 mol%) particles, 12g butylene terephthalate -Butylene succinate copolyester B (weight average molecular weight is 100,000, wherein, based on the total moles of repeating units of butylene terephthalate and repeating units of butylene succinate, terephthalic acid The content of butanediol repeating units is 10 mol%) particles, 4 g of butanediol terephthalate-butanediol adipate copolyester C (weight average molecular weight is...

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Abstract

The invention relates to the field of polymer materials, and discloses a polyester composition, an elastic fiber and a preparation method thereof. Specifically, based on the total weight of each component, the polyester composition contains the following components: (1) 30-98% by weight of polyester A; (2) 1-69% by weight of polyester B; ( 3) 1-69% by weight of polyester C. The elastic fiber made by using the polyester composition of the invention has both moderate elasticity and strength, and the performance can be adjusted in a wide range, and has good application prospects. In addition, the present invention particularly adopts the method of high temperature filament forming-low temperature placement-high temperature stretching to prepare elastic fibers, which can further improve the breaking strength of elastic fibers, expand the adjustable range of performance, and reduce the stress relaxation and permanent strain rate of elastic fibers .

Description

technical field [0001] The present invention relates to the field of polymer materials, in particular, to a polyester composition, a preparation method of the polyester composition, an elastic fiber and a preparation method thereof. Background technique [0002] Elastic fiber is a general term for a type of fiber with high elasticity, low modulus and high elastic recovery. With the improvement of people's requirements for comfort, elastic fibers have gradually become the leader in the field of fibers, and the application fields have also expanded from traditional socks, underwear, sportswear, etc. to emerging fields such as casual wear, high-elasticity fashion, and high-end ready-to-wear. Continue to expand to the field of automobile decoration and medical field. [0003] The original elastic fibers were natural rubber filaments. With the development of the polyurethane fiber "Lycra" by DuPont in 1958, a variety of elastic fibers appeared on the market. These elastic fibe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08K3/22D01F8/14D01F1/10D01D5/08D01D5/12
CPCD01D5/08D01D5/12D01F1/10D01F8/14C08L67/02C08L2201/12C08L2205/025C08L2205/03C08K2003/2241C08K3/22
Inventor 祝桂香郑萃任敏巧刘立志张伟韩翎
Owner CHINA PETROLEUM & CHEM CORP