High-wet-modulus and flame-retardant regenerated cellulose fibers and preparation method thereof

Abstract

The invention provides high-wet-modulus and flame-retardant regenerated cellulose fibers. The high-wet-modulus and flame-retardant regenerated cellulose fibers are prepared by adding 15 to 25wt% of pyrophosphate fire retardant to spinning dope for spinning in a blending way. The preparation method comprises the following steps in sequence: preparing the spinning dope for spinning; compounding and adding the flame retardant; spinning; stretching; and post-processing. The high-wet-modulus and flame-retardant regenerated cellulose fibers remain the hand feel and skin-friendly properties of cellulosic natural fibers, are high in fire resistance, free from risk due to second scalding, high in spinnability and less in loss of fire retardant, the retention rate reaches 98%, resistance to acid and alkali is good, and the fibers can be applied to the spinning industries such as the textile and garment materials industry and the underwears industry.

Description

technical field [0001] The invention relates to a flame-retardant regenerated cellulose fiber and a preparation method thereof, in particular to a high-humidity modulus flame-retardant regenerated cellulose fiber with cottonwood pulp as a raw material and pyrophosphate as a flame retardant and its preparation method. Preparation. Background technique [0002] Regenerated cellulose fiber is a kind of chemical fiber obtained from natural cellulose through physical and chemical methods. Since natural cellulose is used as raw material, it retains most of the properties of natural cellulose, such as good hand feeling and good drapability. , good skin affinity, suitable for making underwear, especially for children or the elderly. Countries around the world have formulated various flame retardant standards and regulations on various products, which are also included as underwear that is in direct contact with the human body. Many countries clearly require that underwear for the ...

AI Technical Summary

Problems solved by technology

However, at present, the flame retardant cellulose fibers developed in China are seriously depleted of flame retardants, reaching the standard required value, requiring a large amount of flame retardants, and the increase of flame retardants leads to spinning forming problems, which affects the flame retardant regenerated cellulose fibers. The strength, yarn spinnability and other problems, the cost is also high, restricting the development of organic flame-retardant regenerated cellulose fibers