A kind of spandex fiber with high uniformity and easy bonding and preparation method thereof

A spandex fiber, easy-bonding technology, applied in the direction of fiber chemical characteristics, rayon manufacturing, conjugated synthetic polymer rayon, etc., can solve the problems of fiber breakage, uneven force on the surface and inner layers, etc., and achieve elastic recovery High stability, high fiber uniformity, uniform fusion effect

Active Publication Date: 2020-04-24
ZHEJIANG HUAFENG SPANDEX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the drawing process, the fibers are prone to uneven stress on the surface and inner layers, resulting in premature fiber breakage

Method used

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  • A kind of spandex fiber with high uniformity and easy bonding and preparation method thereof
  • A kind of spandex fiber with high uniformity and easy bonding and preparation method thereof
  • A kind of spandex fiber with high uniformity and easy bonding and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0019] A kind of preparation method of high uniformity and easy bonding spandex fiber of the present invention comprises the following steps:

[0020] 1) Mix polyurethane urea, 4.5% to 15% compatibilizer, and 0.5% to 5.0% flow promoter in an organic solvent to obtain polyurethane solution A ;

[0021] 2) The weight percentage of each component is respectively 5.0% to 20% of polyurethane urea, 60% to 90% of thermoplastic polyurethane, 4.5% to 15% of compatibilizer, and 0.5% to 5.0% of flow promoter in an organic solvent Mix well to obtain polyurethane solution B;

[0022] 3) The polyurethane solution A and the polyurethane solution B are respectively passed through the inner layer feed port and the outer layer feed port of the composite component, and the high uniformity and easy-bonding spandex fibers are prepared by dry spinning technology.

[0023] The compatibilizer is a compound containing carbamate groups, the mass fraction of carbamate groups contained in it is ≥10.0%;...

Embodiment 1

[0030] The preparation of polyurethane solution A: the 2-(2'-hydroxyl of 86.5% polyurethane urea, 10% compatibilizer, 2% flow promoter, 0.5wt% titanium dioxide, 0.5wt% by weight of each component -3', 5'-di-tert-butylphenyl)-benzotriazole), 0.3wt% bis(N,N-dimethylhydrazideamino4-phenyl)methane, 0.20wt% stearin Magnesium acid is mixed evenly in N,N-dimethylacetamide to form a solid content of 35% inner layer stock solution; the preparation of polyurethane solution B (outer layer stock solution): the polyurethane urea with 10% by weight of each component , 76.5% thermoplastic polyurethane, 10% compatibilizer, 2% flow promoter, 0.5wt% titanium dioxide, 0.5wt% 2-(2'-hydroxy-3', 5'-di-tert-butylphenyl )-benzotriazole), 0.3wt% bis(N,N-dimethylhydrazideamino-4-phenyl)methane, 0.20wt% magnesium stearate in N,N-dimethylacetamide Mix evenly to form an outer layer stock solution with a solid content of 35%; pass the inner layer stock solution and the outer layer stock solution through t...

Embodiment 2

[0035] Composite spandex was prepared in the same manner as in Example 1, except that the selected compatibilizer was polyurethane with a mass fraction of urethane groups of 15%.

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Abstract

The invention discloses a preparing method of a high-uniformity easy-to-bond spandex fiber. The method includes the steps of mixing polyurethane urea, a bulking agent, a flow accelerator and an organic solvent to prepare a polyurethane solution A; secondly, mixing polyurethane urea, thermoplastic polyurethane, a bulking agent, a flow accelerator and an organic solvent to prepare a polyurethane stock solution B; thirdly, preparing the spandex fiber from the two solutions through the compound spinning technology. The prepared compound spandex is uniform in structure, and no interface is displayed under an optical microscope; the adhesion performance is excellent, and high adhesive force is formed after sizing treatment at 100-150 DEG C. The fiber can be applied to the yarn covering field lowin requirement for spandex uniformity and small in market capacity, and can be suitable for the wide application fields of weft-knitting, warp-knitting and the like with the strict requirement for uniformity.

Description

technical field [0001] The invention belongs to the technical field of polymer material preparation, and specifically relates to a method for manufacturing novel functionalized spandex fibers, in particular to a method for preparing spandex fibers with high uniformity and easy bonding. Background technique [0002] Easy-bonding polyurethane fiber, also known as low melting point polyurethane fiber, is a new spandex product in the market in recent years. The performance characteristic of this product is that it is heated and melted in the process of dyeing or setting, so as to realize the mutual bonding of fibers. Therefore, fabrics containing easy-to-bond spandex can effectively avoid thread detachment, burrs, and curls caused by hooking, cutting, and repeated stretching of the fabric. Due to the unique performance and high profit margin of this product, many business scholars at home and abroad have conducted in-depth research and development on it. Patent JP 2007-177359 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/16D01F1/10
CPCD01F1/10D01F8/16
Inventor 梁红军王靖许图远陈厚翔杨晓印
Owner ZHEJIANG HUAFENG SPANDEX
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