A kind of polyurethane elastic fiber with antiskid elastic performance and preparation method thereof

A technology of polyurethane elasticity and elastic performance, applied in the field of polyurethane elastic fiber and its preparation, can solve the problems of easy retraction of spandex, and achieve the effects of improving friction, not easy to slide, and large friction

Active Publication Date: 2021-12-28
ZHEJIANG HUAFENG SPANDEX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical problem: The object of the present invention is to prepare a polyurethane elastic fiber with anti-skid elastic properties and its preparation method. The product maintains the conventional physical property index basically consistent with the product of the same specification, so that the fiber has excellent anti-skid elastic properties, and solves the problem of spandex in denim. The problem of easy retraction at the suture

Method used

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  • A kind of polyurethane elastic fiber with antiskid elastic performance and preparation method thereof
  • A kind of polyurethane elastic fiber with antiskid elastic performance and preparation method thereof
  • A kind of polyurethane elastic fiber with antiskid elastic performance and preparation method thereof

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preparation example Construction

[0042] In an embodiment of the present invention, the preparation method of the composite polyurethane elastic fiber comprises:

[0043] The polyurethane urea spinning stock solution is passed through a spinneret having more than 2 spinneret holes, and after entering the spinning shaft, it is finally formed by a false twist device through a winding machine, and finally the polyurethane elastic fiber with anti-slip elastic properties is obtained;

[0044] Among them, the spinning oil can be added after the polyurethane elastic fiber passes through the false twisting device and before being formed by the winding machine;

[0045] The shape of the spinneret is circular, rectangular or cross-shaped;

[0046] Further, the arrangement of the spinneret holes is "...", "····", "·····", "...", "∷", "∷∷";

[0047] Further, the spinneret holes of the spinneret are arranged in a "line" shape;

[0048] As an example, the arrangement of the spinneret holes is "...", "····", "·····", "····...

Embodiment 1

[0066] A kind of polyurethane elastic fiber with non-slip elastic performance of the present invention and preparation method thereof are as follows:

[0067] Preparation of control polyurethane elastic fiber:

[0068] Add 15.000kg DMAC and 25.000kg PTMG (Mn is 1800) in turn in the reaction tank, add 6.043kg MDI according to the NCO / OH molar ratio of 1.75:1; the reaction temperature is controlled at 50°C, and the reaction time is 120min. Protection, obtain polymer solution A;

[0069] Cool the obtained polymer A to 10°C, add a mixed DMAC solution (6.0% concentration) containing 0.5754kg ethylenediamine + 0.1125kg, and fully stir the reaction to obtain a spinning stock solution with a concentration of 35.0%;

[0070] Add 2.4% additives to the spinning dope in the form of functional auxiliary materials, mix them, stir evenly, mature, pass through the spinneret assembly (3 holes / round / "∴" type), spinning tunnel, false twist device, and warp Winding machine, obtain contrast poly...

Embodiment 2

[0072] A kind of polyurethane elastic fiber with non-slip elastic performance of the present invention and preparation method thereof are as follows:

[0073] Preparation of control polyurethane elastic fiber:

[0074] Add 15.000kg DMAC and 25.000kg PTMG (Mn is 1800) in turn in the reaction tank, add 6.043kg MDI according to the NCO / OH molar ratio of 1.75:1; the reaction temperature is controlled at 50°C, and the reaction time is 120min. Protection, obtain polymer solution A;

[0075] Cool the obtained polymer A to 10°C, add a mixed DMAC solution (6.0% concentration) containing 0.5754kg ethylenediamine + 0.1125kg, and fully stir the reaction to obtain a spinning stock solution with a concentration of 35.0%;

[0076] Add 2.4% additives to the spinning dope in the form of functional auxiliary materials, mix them, stir evenly, mature, pass through the spinneret hole assembly (4 holes / round / "∷" type), spinning tunnel, false twist device, and warp Winding machine, obtain contrast...

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Abstract

The invention relates to a polyurethane elastic fiber with anti-slip elastic properties, the polyurethane elastic fiber is a composite polyurethane elastic fiber formed by compounding more than two monofilament polyurethane elastic fibers, and the composite polyurethane elastic fiber is irregular and flat Cross-section; the preparation method is to pass the polyurethane urea spinning stock solution through a spinneret with more than 2 spinneret holes, and finally pass through a false twist device through a winding machine after entering the spinning tunnel, and finally obtain the above-mentioned non-slip elastic performance. Polyurethane elastic fiber: the product maintains the same general physical property index as the product of the same specification, so that the fiber has excellent anti-slip elastic properties, and solves the problem that spandex is easy to shrink at the seam of denim.

Description

technical field [0001] The invention relates to a polyurethane elastic fiber with anti-skid elastic properties and a preparation method thereof, belonging to the technical field of polyurethane elastic fiber manufacturing. Background technique [0002] Spandex is known as "exquisite textile taste". Adding about 2% to 5% spandex to the fabric can significantly improve the performance of the fabric and increase its elasticity. As people have higher and higher requirements for the quality of textiles, among them, high-end denim has been deeply loved by consumers for a century. However, the spandex at the seams of denim often suffers from elastic loss due to slippery elastic. In response to this problem, most downstream textile manufacturers can only work hard on the design of fabric samples. CN201720528622.0 "A Novel Anti-slip Warp-knitted Elastic Fabric" mainly discloses a method for improving the anti-slip performance of fabrics by using different weaving techniques. There...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/02D02G3/32D01F6/70D01D4/02D01D5/253D01H7/92D01H1/115D01H1/11
CPCD02G3/02D02G3/328D01F6/70D01D4/02D01D5/253D01H7/92D01H1/115D01H1/11D10B2331/10
Inventor 邵晓林温作杨杨晓印池晓智刘亚辉周志伟
Owner ZHEJIANG HUAFENG SPANDEX
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