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A kind of three-dimensional crimped elastic fiber and its preparation method

An elastic fiber and three-dimensional crimping technology, applied in the fiber field, can solve problems such as inability to design according to specific application requirements, easy peeling of component interfaces, single structure, etc., and achieve good thermodynamic compatibility, improved dyeing performance, and good elasticity Effect

Active Publication Date: 2020-06-05
JIANGSU DESAI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of side-by-side composite elastic fibers has thermodynamic compatibility problems between different components in the preparation process, and the component interface is prone to peeling off and other problems.
At the same time, the raw materials used in this type of side-by-side composite spinning are PTT and PBT, which are used as easy-to-shrink parts in side-by-side composite spinning. The price is high, the structure is single, and it cannot be designed according to specific application requirements. These reasons limit it to a certain extent. application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A three-dimensional crimped elastic fiber, the linear density of the three-dimensional crimped elastic fiber is ≤0.5%, the breaking strength is ≥3.5cN / dtex, the breaking elongation is 30.0±3.0%, the evenness unevenness is ≤2.0%, and the boiling water shrinkage is 10±0.5% , oil content 0.6-1.0%, fiber modulus 40-60cN / dtex, fiber elastic recovery rate ≥ 90%, fabric wrinkle recovery angle (acute) ≥ 320°, wrinkle recovery angle (slow) ≥ 3D crimped elastic fiber 330°. The three-dimensional curly elastic fiber has the effect of atmospheric pressure boiling dyeing, and the dyeing rate of disperse dyes is ≥90% at 90-100°C.

[0035] For the three-dimensional crimped elastic fiber, the modified component Tween accounts for 2 wt% of the weight of the composite fiber.

[0036]A preparation method of a three-dimensional crimped elastic fiber, characterized in that polyethylene terephthalate and modified copolyester slices are respectively compounded at the compound assembly through...

Embodiment 2

[0053] A three-dimensional crimped elastic fiber, the linear density of the three-dimensional crimped elastic fiber is ≤0.5%, the breaking strength is ≥3.5cN / dtex, the breaking elongation is 30.0±3.0%, the evenness unevenness is ≤2.0%, and the boiling water shrinkage is 10±0.5% , oil content 0.6-1.0%, fiber modulus 40-60cN / dtex, fiber elastic recovery rate ≥ 90%, fabric wrinkle recovery angle (acute) ≥ 320°, wrinkle recovery angle (slow) ≥ 3D crimped elastic fiber 330°. The three-dimensional curly elastic fiber has the effect of atmospheric pressure boiling dyeing, and the dyeing rate of disperse dyes is ≥90% at 90-100°C.

[0054] For the three-dimensional crimped elastic fiber, the modified component Tween accounts for 5% by weight of the composite fiber.

[0055] A preparation method of a three-dimensional crimped elastic fiber, characterized in that polyethylene terephthalate and modified copolyester slices are respectively compounded at the compound assembly through diffe...

Embodiment 3

[0072] A three-dimensional crimped elastic fiber, the linear density of the three-dimensional crimped elastic fiber is ≤0.5%, the breaking strength is ≥3.5cN / dtex, the breaking elongation is 30.0±3.0%, the evenness unevenness is ≤2.0%, and the boiling water shrinkage is 10±0.5% , oil content 0.6-1.0%, fiber modulus 40-60cN / dtex, fiber elastic recovery rate ≥ 90%, fabric wrinkle recovery angle (acute) ≥ 320°, wrinkle recovery angle (slow) ≥ 3D crimped elastic fiber 330°. The three-dimensional curly elastic fiber has the effect of atmospheric pressure boiling dyeing, and the dyeing rate of disperse dyes is ≥90% at 90-100°C.

[0073] For the three-dimensional crimped elastic fiber, the modified component Tween accounts for 10wt% by weight of the composite fiber.

[0074] A preparation method of a three-dimensional crimped elastic fiber, characterized in that polyethylene terephthalate and modified copolyester slices are respectively compounded at the compound assembly through di...

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Abstract

The invention relates to a three-dimensional curled elastic fiber and a preparation method thereof, and especially relates to an elastic fiber proto-filament, which is prepared by the following steps:taking modified co-polyester and polyethylene glycol tere-phthalate as raw materials and then subjecting raw materials to parallelly compounded asymmetric melt spinning, circular blow cooling, oiling, reeling, and bucket falling. The elastic short fiber with a three dimensional curling property is prepared by subjecting the proto-filament to following steps: bundling, drawing, oiling, tightened thermoforming, and cutting. The modified co-polyester is prepared by adding a modifying component (tween) in the synthesis process of polyethylene glycol tere-phthalate to carry out ester exchange andpolycondensation. The modifying component (tween) is an aliphatic hydrophilic flexible chain macromolecule, can form modified block co-polyester with polyester hard sections, and can obviously enhancethe water moistening property of polyethylene glycol tere-phthalate. The prepared three-dimensional curled elastic fiber has the advantages of high fluffiness and high elastic recovery rate, has a normal pressure boiling dyeing effect, and is widely used in fields such as home textile, clothes, and the like.

Description

technical field [0001] The invention belongs to the field of fiber technology, and relates to a three-dimensional crimped elastic fiber and a preparation method thereof. Background technique [0002] China has become the world's largest polyester fiber production and application country. With the continuous improvement of the quality of life, consumers' demand for composite functional textiles with comfort, beauty and health is increasing, and more and more attention is paid to the research, development and application of multifunctional fibers. Elastic fiber with shape retention and wrinkle resistance is one of the most important products in comprehensive comfort products. Its easy care can not only meet the fast-paced modern life, but also save the ironing process to achieve low carbon, energy saving and emission reduction. Existing elasticity mainly includes spandex elastic fiber, polyether ester elastic fiber, polytrimethylene terephthalate fiber, polybutylene terephtha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/14D01D5/32C08G63/672
Inventor 潘洪庆王朝生吉鹏陈仕艳郑立康冯赛花
Owner JIANGSU DESAI CHEM FIBER
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