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Easy-backing-off anti-adhesion polyurethane fiber and preparation method thereof

A polyurethane fiber, anti-adhesion technology, applied in the direction of fiber chemical characteristics, rayon manufacturing, single-component synthetic polymer rayon, etc. Loss, saving production cost, good unwinding effect

Inactive Publication Date: 2019-10-11
ZHENGZHOU ZHONGYUAN SPANDEX ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Usually, polyurethane urea elastic fibers are unwound by rotating on some kind of rotating body when weaving with reverse yarns including nylon, cotton, silk, wool, etc. In the case of fibers, yarn fluidity problems such as elastic yarn detaching from the transverse circumference, etc., or the shape of the circumference will be disturbed and form like bands at the edge of the circumference, etc., resulting in fiber breakage during weaving

Method used

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  • Easy-backing-off anti-adhesion polyurethane fiber and preparation method thereof
  • Easy-backing-off anti-adhesion polyurethane fiber and preparation method thereof
  • Easy-backing-off anti-adhesion polyurethane fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The required mass percentages of each component of the prepared easy unwinding and anti-blocking polyurethane fiber are:

[0027]

[0028] Through the specific implementation of the above examples, the physical properties in the following table are obtained.

[0029] Table 1:

[0030] storage time ≥7 months Unwind success rate ≥98％ Tensile 260% stress retention ≥95％ Qualified rate of finished fabric ≥95％

[0031] It can be seen from Table 1 that the easy-unwinding and anti-blocking polyurethane fiber prepared in Example 1 can still be used after more than half a year of storage, and has commercial use value.

Embodiment 2

[0033] The required mass percentage of each component of the prepared easy-unwinding and anti-blocking polyurethane fiber is:

[0034]

[0035] Through the specific implementation of the above examples, the physical properties in the following table are obtained.

[0036] Table 2:

[0037] storage time ≥9 months Unwind success rate ≥97％ Tensile 260% stress retention ≥94％ Qualified rate of finished fabric ≥94％

[0038] It can be seen from Table 2 that the easy-unwinding and anti-blocking polyurethane fiber prepared in Example 2 can still be used after more than half a year of storage, and has commercial use value.

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Abstract

The invention provides a polyurethane fiber which can keep easy-backing-off and anti-adhesion performance for a long time and a preparation method of the polyurethane fiber. The method comprises the steps that (1) raw materials polytetramethylene glycol and 4,4,-methylenediphenyl diisocyanate are subjected to a mixing reaction to obtain a prepolymer, and a proper amount of solvent is added for preparing a prepolymer solution; (2) the prepolymer solution and a mixed diamine chain extender react to form a polymer solution; (3) a special additive, namely a sizing agent is added to the polymer solution, and through stirring and curing, a spinning stock solution is prepared; (4) through spinning of spinning equipment, the easy-backing-off anti-adhesion polyurethane fiber is prepared. At least six months after the easy-backing-off anti-adhesion polyurethane fiber is taken down from a winding head, the adhesion and yarn breaking phenomena do not occur in the backing-off process of the polyurethane fiber, the storage life of the polyurethane fiber is prolonged, the service life of the polyurethane fiber is prolonged, the loss of the polyurethane fiber is greatly reduced, and the industrialproduction cost is reduced.

Description

technical field [0001] The invention relates to a functional chemical fiber and a manufacturing method thereof, in particular to an easy-unwinding and anti-adhesion polyurethane fiber and a manufacturing method thereof. Background technique [0002] In general, polyurethane urea elastic fibers can be used for various purposes because they have inherent properties such as excellent elasticity and elastic recovery force. Moreover, as the application range of polyurethane urea elastic fibers continues to expand, conventional fibers need to meet the demand through new additional properties. [0003] With the continuous improvement of the quality of life of the people, consumers have higher and higher requirements for the comfort of clothing. The use range and application fields of spandex continue to expand. Polyurethane fiber plays an important role in improving the quality of fabrics, and its content in fabrics also increases. constantly improving. In order to reduce the cos...

Claims

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Application Information

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IPC IPC(8): D01F6/94D01F1/10
CPCD01F1/10D01F1/106D01F6/94
Inventor 袁永浩乔建强康许科崔跃伟
Owner ZHENGZHOU ZHONGYUAN SPANDEX ENG TECH
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