Manufacturing method of multi-functional modified acrylic fibers with high moisture absorption and flame resistance

Abstract

The invention relates to a manufacturing method of multi-functional modified acrylic fibers with high moisture absorption and flame resistance, which is characterized by directly complexing and cyclizing acrylic fibers into the acrylic fibers with high moisture absorption and flame resistance by using a method of chemical complexing and cyclization. The method comprises the following steps of: firstly, adding the acrylic fibers into a water solution containing copper ions for reaction to produce acrylic fibers containing the copper ions; then, adding the acrylic fibers containing the copper ions into a mixture of hydrazine hydrate and reaction assistants to immerse for a certain period of time; and finally, drying the acrylic fibers by squeezing or tossing to obtain acrylic fibers containing a certain amount of water solution, and steaming the acrylic fibers in a dry or gas mode in a high-temperature high-pressure steam setting vessel for a certain period of time to produce the acrylic fibers with high moisture absorption and flame resistance. The method can process the acrylic fibers into the acrylic fibers with high moisture absorption and flame resistance only with one simple high-temperature high-pressure steam setting vessel and fewer matching processes and equipment, which greatly reduces the traditional manufacturing process of the acrylic fibers with high moisture absorption and flame resistance; the invention has simple production process, low equipment investment, low production cost and easy realization of industrialization.

Description

technical field

[0001] The invention relates to a method for manufacturing highly moisture-absorbing and flame-retardant multifunctional modified acrylic fiber, which 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. But acrylic fiber also has many disadvantages, such as poor hygroscopicity, easy to generate static electricity, easy to burn, etc., and it is easy to emit toxic gas during combustion, which is harmful to human health and causes secondary environmental pollution. In order to improve the hygroscopicity and flame retardancy of acrylic fibers, acrylic fiber workers from various countries have made unremitting efforts and created many high moisture absorption and flame retardant methods, such as preparing high moisture absorption and high water absorption acrylic fibers by copolymeriza...