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Elastic composite viscose fiber and preparation method thereof

A technology of viscose fiber and elasticity, which is applied in the field of elastic composite viscose fiber and its preparation, can solve the problems of high alkalinity of viscose solution, hindering the preparation of elastic fiber, and harsh conditions in the spinning process, so as to improve elasticity and improve return elastic effect

Inactive Publication Date: 2011-08-17
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in Chinese and foreign research documents and patents, no relevant reports on elastic viscose fibers have been found. This is because the preparation of viscose solution and the spinning process conditions in the later stage are harsh. The temperature of the glue should not be too high, it should be at room temperature or below to ensure that the viscose spinning solution does not age; the viscose solution is highly alkaline, and the alkaline concentration limit of about 5.8% limits a variety of modification methods; in the production of viscose In the coagulation bath of glue fiber, H 2 SO 4 The content is generally in the range of 50-120g / L, and the large acidity also seriously affects the preparation of elastic viscose
This shows that factors such as strong alkali, strong acid and long process cycle in the viscosity spinning process hinder the preparation of elastic fibers

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0028] A preparation method of elastic composite viscose fiber, elastic composite viscose fiber is formed by blending and spinning of viscose solution and elastic macromolecular solution, and the preparation method adopts the following steps:

[0029] Preparation of blend solution of A viscose solution and elastic macromolecular solution

[0030] The viscose solution and the elastic macromolecular solution are put into an emulsifying machine for emulsification and dispersion according to the following mass percentages, the viscose solution is 40-99.56%, and the elastic macromolecular solution is 0.44-60%. The emulsification temperature is 20-40 The emulsification time is 10-30 minutes, and the rotation speed of the emulsifier is 200-15000 rpm to form a blended solution for later use. Wherein, the solid content of the viscose solution is 5-15%, the elastic macromolecular solution is one of water-soluble polyurethane or oil-soluble polyurethane, the solid content of water-solub...

Embodiment 1

[0037] According to the above process, a viscose solution and a water-soluble polyurethane solution prepared from cotton cellulose are selected, wherein the polyurethane is a polyurethane elastomer for fibers.

[0038] Preparation of blend solution of A viscose solution and elastic macromolecular solution

[0039] Put 1900g of cotton cellulose viscose solution with a number average molecular weight of 200 and 8.34g of a water-soluble polyurethane solution with a number average molecular weight of 20000 into an emulsifier for emulsification and dispersion, and the emulsification temperature is 20 The emulsification time is 10 minutes, and the rotational speed of the emulsifier is 200 rpm to form a blended solution for later use. Wherein, the solid content of the cotton cellulose viscose solution is 5%, and the solid content of the water-soluble polyurethane is 60%.

[0040] Degassing of B blend solution

[0041] Add the polysiloxane defoamer that accounts for 0.1% polysiloxa...

Embodiment 2

[0046] According to the above process, viscose solution and oil-soluble polyurethane solution prepared from bamboo cellulose are selected, wherein polyurethane is polyurethane elastomer for fiber.

[0047] Preparation of blend solution of A viscose solution and elastic macromolecular solution

[0048] The bamboo cellulose viscose solution 1600g that number-average molecular weight is 400 and the oil-soluble polyurethane solution 50g that number-average molecular weight is 50000 are put into emulsification machine and carry out emulsification dispersion, and emulsification temperature is 30 The emulsification time is 15 minutes, and the rotational speed of the emulsifier is 1000 rpm to form a blended solution for later use. Wherein, the solid content of the bamboo cellulose viscose solution is 5%, and the solid content of the oil-soluble polyurethane is 40%.

[0049] Degassing of B blend solution

[0050] Add the polyether modified silicon defoamer that accounts for 0.2% pol...

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Abstract

The invention relates to an elastic composite viscose fiber and a preparation method thereof, belonging to the technical field of spinning. In the elastic composite viscose fiber, viscose glue is a continuous phase, and elastic macromolecules are dispersed phases. The elastic composite viscose fiber comprises the following components in percentage by mass: 50-95 percent of viscose glue and 5-50 percent of elastic macromolecules. The elastic composite viscose fiber provided by the invention is obtained by blended spinning of a viscose glue solution and an elastic macromolecule solution. The preparation method has a simple process, is convenient to operate and control and is easy for realizing industrial production; special equipment is not needed; and the raw material source range of the viscose glue solution is wide, and the raw materials can be cotton fiber, bamboo fiber or wood fiber. The elastic composite viscose fiber prepared by adopting the method has the elastic enlongation percentage of 10-140 percent and the elastic recovery rate of 80-95 percent, and has the characteristics of simple structure, product diversity and wide application range.

Description

technical field [0001] The invention relates to an elastic composite viscose fiber obtained by blending and spinning a viscose solution and an elastic macromolecular solution and a preparation method thereof, belonging to the technical field of textiles. Background technique [0002] At present, the fibers with good resilience on the market are mainly spandex and other modified chemical fibers, such as elastic polyethylene fiber, elastic polypropylene fiber, elastic polyester fiber, elastic acrylic fiber and so on. However, most of the raw materials of these chemical fibers come from petroleum. In the contemporary society where petroleum is increasingly scarce and crisis is beginning to appear, it is necessary to find a way to prepare recycled fibers into fibers with high resilience, and then replace or partially replace spandex and other elastic fibers. . [0003] Renewable fibers are mainly viscose fibers, and the raw materials mainly include: cotton, bamboo, wood pulp an...

Claims

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Application Information

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IPC IPC(8): D01F2/08
Inventor 徐卫林刘欣李文斌
Owner WUHAN TEXTILE UNIV
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