Vinylon and preparation method thereof

A technology of vinylon and polyvinyl alcohol solution, which is applied in the field of fiber materials, can solve the problems of high hygroscopicity of vinylon, difficulty in dyeing, poor hot water resistance and poor strength, and achieve the effects of low hygroscopicity, less pollution, and easy control of conditions

Active Publication Date: 2019-04-16
CGN DASHENG ELECTRON ACCELERATOR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of them can fundamentally improve the weakness of vinylon, which has high hygroscopicity, difficulty in dyeing, poor hot water resistance and poor strength.

Method used

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  • Vinylon and preparation method thereof

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Experimental program
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Effect test

preparation example Construction

[0030] The invention provides a kind of preparation method of vinylon, comprises the following steps:

[0031] a) mixing the polyvinyl alcohol solution with the modified solution to obtain a mixed emulsion;

[0032] b) irradiating the mixed emulsion obtained in step a) with an electron beam to obtain a composite emulsion;

[0033] c) spinning the composite emulsion obtained in step b) to obtain vinylon.

[0034] In the invention, the polyvinyl alcohol solution and the modified solution are firstly mixed to obtain a mixed emulsion. In the present invention, the polyvinyl alcohol solution is preferably an aqueous solution of polyvinyl alcohol cooked at 55°C to 99°C, more preferably an aqueous solution of polyvinyl alcohol cooked at 90°C. In the present invention, the source of the polyvinyl alcohol is not particularly limited, and commercially available products well known to those skilled in the art can be used. In a preferred embodiment of the present invention, the polyvin...

Embodiment 1

[0086] (1) Cook 1799 type polyvinyl alcohol at 90°C to obtain 100 kg of polyvinyl alcohol solution with a mass concentration of 15%, and cool to room temperature for subsequent use;

[0087] (2) mixing 1kg ethyl acrylate, 1kg n-butyl acrylate and 15kg mass concentration of 35% aqueous polyurethane emulsion to obtain a modified solution;

[0088] (3) Mix and stir the polyvinyl alcohol solution obtained in step (1) and the modified solution obtained in step (2) to obtain a mixed emulsion.

[0089] (4) controlling the thickness of the mixed emulsion obtained in step (3) at 2cm to 3cm, and carrying out electron beam irradiation 10kGy to obtain a composite emulsion;

[0090] (5) Heating the composite emulsion obtained in step (4) to 75° C., followed by spinning, coagulation and post-treatment in sequence to obtain vinylon.

Embodiment 2

[0092] (1) Cook 1799 type polyvinyl alcohol at 90°C to obtain 100 kg of polyvinyl alcohol solution with a mass concentration of 15%, and cool to room temperature for subsequent use;

[0093] (2) 1kg mass concentration is 35% silicone acrylic emulsion, 1kg n-butyl acrylate and 13kg mass concentration is 35% aqueous polyurethane emulsion mixing, obtains modified solution;

[0094] (3) Mix and stir the polyvinyl alcohol solution obtained in step (1) and the modified solution obtained in step (2) to obtain a mixed emulsion.

[0095] (4) Control the thickness of the mixed emulsion obtained in step (3) at 2cm to 3cm, and carry out electron beam irradiation 12kGy to obtain a composite emulsion;

[0096] (5) Heating the composite emulsion obtained in step (4) to 75° C., and then sequentially undergoing spinning, coagulation and subsequent treatment to obtain vinylon.

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Abstract

The invention provides a preparation method of vinylon. The preparation method comprises the steps: (a) mixing a polyvinyl alcohol solution with a modified solution to obtain a mixed emulsion; (b) conducting electron beam irradiation on the mixed emulsion obtained in step (a) to obtain a composite emulsion; (c) spinning the composite emulsion obtained in step (b) to obtain the vinylon. Compared with the prior art, the preparation method uses the polyvinyl alcohol solution and the modified solution as main raw materials, and the above raw materials execute grafting reaction by the electron beamirradiation to achieve internal crosslinking of polyvinyl alcohol and the modified material, accordingly the performance of the vinylon is fundamentally improved, and the application field of the vinylon is widened. The prepared vinylon has the characteristics of low hygroscopicity, easy dyeing and good hot water resistance and has very high breaking strength. It is shown through experimental results that the hygroscopicity of the vinylon obtained by the preparation method can achieve 2.97%, dyeing is easy, the hot water resistance can reach 0.08%, and the breaking strength can reach 8.6 cN / dtex.

Description

technical field [0001] The invention relates to the technical field of fiber materials, and more specifically relates to a vinylon and a preparation method thereof. Background technique [0002] Vinylon is the trade name of polyvinyl acetal fiber, also known as Vinylon. Its performance is close to that of cotton, known as "synthetic cotton", and it is the most hygroscopic variety among existing synthetic fibers. Vinylon fiber is a kind of synthetic fiber made by wet spinning of polyvinyl alcohol solution and condensed with aldehyde. Among all kinds of fibers, it has high strength, good hygroscopicity and other excellent properties. extensive attention. [0003] For example, the Chinese patent with the publication number CN101392412A discloses a high-strength vinylon and its preparation method. Polyvinyl alcohol with a degree of polymerization of 1700 to 5000 and a degree of alcoholysis of 70 to 99.9% is put into aqueous solutions of different additives to prepare 10 The s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/50D01F1/10C08J3/24C08L29/04
CPCC08J3/246C08J2329/04C08J2439/06C08J2443/04C08J2467/00C08J2471/02C08J2475/04D01F1/10D01F6/50
Inventor 郑庆信肖峰朱南康张恒斌邵晓
Owner CGN DASHENG ELECTRON ACCELERATOR TECH
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