Solvent method high-wet-modulus bamboo fiber and preparation method thereof

Abstract

The invention discloses a solvent method high-wet-modulus bamboo fiber and a preparation method thereof. The preparation method of the bamboo fiber comprises the following steps: activation, adding bamboo pulp into deionized water, adjusting the pH value, adding cellulase for activation, and then adding alkali to adjust the pH value; squeezing, vacuum dewatering and squeezing; pre-dissolving, adding water solution containing 50-88% of N-methyl morpholine-N-oxide; dissolving, entering a dissolving machine, heating, vacuumizing, dehydrating, dissolving, homogenizing and defoaming; spinning, spraying through a spinneret plate, and molding by adopting a dry wet spinning; washing; whitening; oiling; and drying. The preparation method has simple operation, no industrial pollution, low energy consumption and high safety performance, and is applicable to manufacturing the solvent method bamboo fiber by large-scale industrialized continuous production; furthermore, the bamboo fiber prepared by the method not only maintains the natural physical and chemical properties of the bamboo fiber, but also generates no harmful chemical residue and has higher wet modulus.

Description

technical field [0001] The invention relates to a bamboo fiber and a preparation method thereof, in particular to a solvent method high wet modulus bamboo fiber and a preparation method thereof. Background technique [0002] Bamboo fiber products are unique because of their high-tech content, silky, soft and warm, cool and comfortable, antibacterial and antibacterial, green and environmental protection, and natural health care. [0003] The natural antibacterial, antibacterial and anti-ultraviolet effects of bamboo fiber fabric can still maintain its original characteristics after repeated washing and sun exposure. It is also different from other fabrics that add antibacterial agents, anti-ultraviolet agents and other finishing agents in the post-treatment, so it will not cause any allergic adverse reactions to human skin, but has health care and bactericidal effects on human skin. Skin care products with a wide range of applications. [0004] The application of bamboo fib...

AI Technical Summary

Problems solved by technology

[0007] Chinese invention patent application publication CN1190531C discloses a kind of production method of solvent-based bamboo cellulose fiber, there are following defects in its technological method: 1, the volume of polymerization kettle is at 5-300 liters, according to the routine, 5-300 liters volumetric polymerization kettle, does not belong to the category of industrialized production; 2, the prior art lists the "pulp dehydration" step, the dehydration time is as long as 8 hours, which is time-consuming and energy-consuming

[0008] Chinese Invention Patent Application Publication CN1760412A discloses a production method of solvent-based regenerated bamboo fiber cellulose, but has the following defects: 1. The production process is complicated, such as hydrolysis, acidolysis, enzymolysis, etc. in the pulp pretreatment process three processes

Moreover, a large amount of industrial wastewater will be generated due to hydrolysis and acidolysis during the pretreatment process.

2. The technical solution lacks a pre-dissolution process, which will cause unstable slurry quality

[0009] Chinese Invention Patent Application Publication CN1851115A discloses a method for directly manufacturing regenerated bamboo fiber from paper-making grade bamboo pulp. Demanding while posing a potential physical threat to the operator

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