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Elastic composite polyvinyl alcohol fiber and preparation method thereof

A polyvinyl alcohol fiber and polyvinyl alcohol technology, which is applied in the textile field, can solve the problems of difficulty in making high-grade clothing, restrictions on textile wear, and difficulty in dyeing, and achieves the effects of simple process, convenient operation and control, and low equipment requirements.

Inactive Publication Date: 2012-12-12
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because of its poor elasticity, it is not easy to dye, and it is difficult to make high-grade clothing materials, so textile clothing is limited.
[0005] At present, in the research literature and patents at home and abroad, no relevant reports on elastic polyvinyl alcohol fibers have been found.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] A preparation method of elastic composite polyvinyl alcohol fiber, the elastic composite polyvinyl alcohol fiber is formed by blending and spinning polyvinyl alcohol solution and aqueous polyurethane solution, and the preparation method adopts the following steps:

[0029] A spinning solution preparation of polyvinyl alcohol aqueous solution and aqueous polyurethane solution

[0030] Weigh polyvinyl alcohol with a degree of polymerization of 1700-2000 and add it to deionized water, soak at room temperature for 60 minutes to fully swell the polyvinyl alcohol in water, then raise the temperature to 85-95°C, stir for 2-8 hours, and the speed of the mixer is 200 -2000 rpm, let the polyvinyl alcohol be fully dissolved, and make a polyvinyl alcohol aqueous solution with a solid content of 10-20%, according to the following mass percentages: polyvinyl alcohol aqueous solution 33-99.1%, water-based polyurethane solution 0.9-67% Ratio, put the water-based polyurethane solution w...

Embodiment 1

[0037] Embodiment 1 according to the above-mentioned preparation method

[0038] Preparation of spinning stock solution of A polyvinyl alcohol solution and aqueous polyurethane solution

[0039] Weigh 100 g of polyvinyl alcohol with a degree of polymerization of 1700 and add it to 900 g of deionized water, soak at room temperature for 60 minutes, then raise the temperature to 95°C and stir for 3 hours at a speed of 200 rpm to make polyvinyl alcohol with a mass percentage of 10% Aqueous solution: Weigh 1000 g of aqueous polyurethane solution with a solid content of 10% and a number average molecular weight of 200,000, add it to the above-prepared aqueous solution of polyvinyl alcohol, mix thoroughly at 95°C for 120 minutes to obtain a mixed solution, and set aside.

[0040] B Degassing of spinning dope

[0041] The spinning dope prepared in step A is filtered twice, poured into a defoaming kettle, kept at 95-98°C, and allowed to stand for defoaming for 6 hours.

[0042] Spinnin...

Embodiment 2

[0045] After measurement, the elastic elongation of the elastic composite polyvinyl alcohol fiber can reach 130%, and the elastic recovery rate can reach 93%. Embodiment 2 according to the above-mentioned preparation method

[0046] Preparation of blend solution of A polyvinyl alcohol solution and water-based polyurethane solution

[0047] Weigh 100 g of polyvinyl alcohol with an average degree of polymerization of 1800 and add it to 900 g of deionized water, soak at room temperature for 60 minutes, then raise the temperature to 95 ° C and stir for 3 hours, the speed of the mixer is 2000 rpm, and the polyethylene with a mass percentage of 10% is made alcohol solution. Weigh 167g of aqueous polyurethane solution with a solid content of 60% and a number average molecular weight of 2000, add it to the above-prepared aqueous solution of polyvinyl alcohol, mix thoroughly at 90°C for 120 minutes to obtain a mixed solution, and set aside.

[0048] B Degassing of spinning dope

[0...

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Abstract

The invention relates to elastic composite polyvinyl alcohol fiber and a preparation method thereof, belonging to the technical field of spinning. In the elastic composite polyvinyl alcohol fiber, polyvinyl alcohol is a continuous phase and aqueous polyurethane is a dispersed phase; and the elastic composite polyvinyl alcohol fiber comprises the following components by weight percent: 50-95% of polyvinyl alcohol and 5-50% of aqueous polyurethane. The elastic composite polyvinyl alcohol fiber is formed by blending and spinning of polyvinyl alcohol solution and aqueous polyurethane solution, and the polyvinyl alcohol solution and the aqueous polyurethane solution are further convenient to prepare. The preparation method is simple in process, special equipment is not required, the operation control is convenient, the industrial production is easy to realize, the elastic elongation rate of the elastic composite polyvinyl alcohol fiber prepared by the method can achieve 40-120%, the elastic recovery rate can achieve 80-95%, diverse products can be realized and the range of applications is wide.

Description

technical field [0001] The invention relates to an elastic composite polyvinyl alcohol fiber obtained by blending and spinning polyvinyl alcohol solution and aqueous polyurethane solution and a preparation method thereof, belonging to the technical field of textiles. Background technique [0002] In 1924, Hermann and Haehnel in Germany synthesized polyvinyl alcohol, and used its aqueous solution to make fibers by dry spinning. In the past 100 years, the production process and technology of polyvinyl alcohol fibers have been continuously improved, and polyvinyl alcohol fibers with different mechanical properties have gradually emerged, such as: high-strength polyvinyl alcohol fibers, high-strength and high-modulus polyvinyl alcohol fibers, protein-modified polyvinyl alcohol fibers, Crack-resistant polyvinyl alcohol fibers and more. Since the 1980s, functional fibers have gradually attracted people's attention, such as: highly absorbent polyvinyl alcohol fiber, conductive pol...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/50D01F11/06
Inventor 徐卫林顾绍金王栋刘欣
Owner WUHAN TEXTILE UNIV