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Hydroscopic and fast dry spandex fiber and preparation method thereof

A technology of spandex fiber, moisture absorption and quick drying, applied in dry spinning, fiber chemical characteristics, rayon manufacturing and other directions, to achieve the effect of improving moisture absorption capacity, improving grade, and mature manufacturing process

Active Publication Date: 2014-10-01
ZHEJIANG HUAFENG SPANDEX
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are few patented technologies and documents on the production of hygroscopic and quick-drying spandex fibers. Therefore, it is necessary to develop a new technology for producing hygroscopic and quick-drying spandex fibers to meet the needs of the development of the clothing field.

Method used

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  • Hydroscopic and fast dry spandex fiber and preparation method thereof
  • Hydroscopic and fast dry spandex fiber and preparation method thereof
  • Hydroscopic and fast dry spandex fiber and preparation method thereof

Examples

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Embodiment 1

[0028] Step 1: Preparation of prepolymer solution

[0029] 1) Mix the raw materials polytetramethylene ether glycol and 4,4'-diphenylmethane diisocyanate, and react at 75-90°C for 120 minutes to prepare prepolymer 1, in which 4,4'-diphenylmethane The molar ratio of diisocyanate to polytetramethylene ether glycol is 1.80:1;

[0030] 2) Mix the raw materials polyethylene oxide and 4,4'-diphenylmethane diisocyanate in N,N-dimethylacetamide with a concentration of 50.0% by mass, and react at 80°C for 150 minutes to prepare the pre- Polymer 2, wherein the molar ratio of 4,4'-diphenylmethane diisocyanate to polyethylene oxide is 1.90:1;

[0031] 3) Mix the prepolymer 1 and the prepolymer 2 evenly, dissolve them into the solvent N,N-dimethylacetamide to obtain a prepolymer solution, and store it at a temperature of 45°C.

[0032] Step 2: Preparation of fiber-forming polymer

[0033] 1) Dissolving one or both of ethylenediamine and butylenediamine into the solvent N,N-dimethylaceta...

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Abstract

The invention relates to a hydroscopic and fast dry spandex fiber and a preparation method thereof. The preparation method comprises the following steps: (1) mixing polytetramethylene ether glycol and 4,4'-diphenylmethane diisocyanate for reacting to obtain a prepolymer 1, mixing polyethylene oxide and / or epoxypropane and 4,4'-diphenylmethane diisocyanate in N,N-dimethylacetamide for reacting to obtain a prepolymer 2, uniformly blending the prepolymer 1 and the prepolymer 2, and rapidly adding N,N-dimethylacetamide into the prepolymer mixture to form a solution; (2) performing a reaction on the prepolymer solution and a mixed diamine chain extender to obtain a polymer solution; (3) adding special auxiliary slurry into the polymer solution, stirring and curing, thereby obtaining a spinning solution; and (4) carrying out spinning by spinning equipment, thereby obtaining the hydroscopic and fast dry spandex fiber. The hydroscopic and fast dry spandex fiber has a hydroscopic and fast dry function and the comfort of a spandex fiber fabric is greatly improved.

Description

technical field [0001] The invention relates to a functional chemical fiber and a manufacturing method thereof, in particular to a preparation method of a moisture-absorbing and quick-drying spandex fiber. Background technique [0002] With the continuous improvement of people's living standards, consumers have higher and higher requirements for the comfort of fabrics, and the ability to absorb moisture and dry quickly will become one of the conditions for high-quality fabrics. Spandex plays an important role in improving the quality of fabrics, and its application fields are constantly expanding, and its content in fabrics is also increasing. Then it is increasingly important to develop a kind of moisture-absorbing and quick-drying spandex fiber, which not only improves the elasticity of the fabric, but also improves the comfort of the fabric. [0003] At present, there are few patented technologies and documents about the production of hygroscopic and quick-drying spandex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/94D01F1/10C08G18/76C08G18/66C08G18/48C08G18/10D01D5/04
Inventor 王小华费长书薛士壮李晓庆梁红军王靖钱锦
Owner ZHEJIANG HUAFENG SPANDEX
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