Method for preparing acrylic fibers with high water absorptivity and moisture absorptivity

A hygroscopic acrylic fiber with high water absorption technology, which is applied in textiles, papermaking, fiber treatment, etc., can solve the problems of easy generation of static electricity and poor hygroscopicity, achieve good water absorption performance, low production cost, and realize the effect of industrialization

Inactive Publication Date: 2012-10-17
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But acrylic fiber also has many disadvantages, such as poor hygroscopicity, easy to generate static electricity, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1: The mixed solution is composed of potassium hydroxide with a mass percentage concentration of 10%, formaldehyde with a mass percentage concentration of 1%, and hydrazine hydrate with a mass percentage concentration of 5%. Acrylic fiber 10g is added to a mixture of 10 times the quality of acrylic fiber The solution is hydrolyzed and cyclized for 200 minutes at a reaction temperature of 70° C., taken out, washed and dried to obtain a highly water-absorbing and hygroscopic acrylic fiber.

Embodiment 2

[0011] Embodiment 2: the mixed solution is made up of potassium hydroxide with a mass percentage concentration of 8%, formaldehyde with a mass percentage concentration of 2%, and hydrazine hydrate with a mass percentage concentration of 3%. Acrylic fiber 10g is added to a mixture of 10 times the quality of acrylic fiber The solution is hydrolyzed and cyclized for 150 minutes at a reaction temperature of 90° C., taken out, washed and dried to obtain highly water-absorbing and hygroscopic acrylic fibers.

Embodiment 3

[0013] The mixed solution is composed of sodium hydroxide with a mass percentage concentration of 6%, formaldehyde with a mass percentage concentration of 3%, and hydrazine hydrate with a mass percentage concentration of 1%. Get acrylic fiber 10g and add it to a mixed solution of 10 times the quality of acrylic fiber. Under the condition of a reaction temperature of 100° C., the hydrolysis and cyclization was carried out for 100 minutes, and the acrylic fiber with high water absorption and hygroscopicity was obtained after taking out, washing and drying.

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Abstract

The invention relates to a method for preparing acrylic fibers with high water absorptivity and moisture absorptivity. The method is characterized by comprising the following steps: directly adding acrylic fibers into a mixed solution made of sodium hydroxide, formaldehyde and hydrazine hydrate, or potassium hydroxide, formaldehyde and hydrazine hydrate; performing hydrolysis acetalation crosslinking for 50-200 minutes at the reaction temperature of 70-170 DEG C; and cleaning and drying so as to obtain the acrylic fibers with high water absorptivity and moisture absorptivity. When the reaction temperature is lower than 100 DEG C, the reaction can take place in an open or closed container; and when the reaction temperature is higher than 100 DEG C, the reaction can take place only in a closed pressure container. According to the method, the acrylic fibers can be endowed with high water absorptivity and moisture absorptivity only through a simple acrylic fiber hydrolysis acetalation crosslinking technology, the production technology is simple, the equipment investment is small, the production cost is low, and the industrialization can be realized easily.

Description

technical field [0001] The invention relates to a method for preparing highly water-absorbing and hygroscopic acrylic fibers, and belongs to the technical field of chemical fiber manufacturing. Background technique [0002] Acrylic fiber is a kind of synthetic fiber, which has the characteristics of excellent warmth retention, dyeability and wool-like property. However, acrylic fiber also has many disadvantages, such as poor hygroscopicity and easy generation of static electricity. In order to improve the water absorption and hygroscopic properties of acrylic fibers, acrylic fiber workers have made unremitting efforts and created many methods for manufacturing high water and hygroscopic acrylic fibers, such as preparing high moisture absorption and high water absorption acrylic fibers by copolymerization, blending, hydrolysis and other methods. Contents of the invention [0003] The purpose of the present invention is to provide a method for preparing a highly water-absor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/38D06M13/338D06M13/127D06M101/28
Inventor 杨彦功
Owner SHANDONG UNIV OF TECH
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