Method for manufacturing high wet modulus fiber

Abstract

The invention discloses a method for manufacturing high wet modulus fiber, which comprises the process steps of alkalization reaction, ageing reaction, etiolation reaction, viscose dissolution, viscose filtration, viscose defoaming, viscose maturation, spinning, drafting and post-treatment in turn, adopts cellulose pulp of which the alpha cellulose content is less than 95 percent as a raw material, uses a common device for producing ordinary viscose short fiber, and adopts a special process formulation and a spinning drafting mode with simple and practical process control to manufacture the high wet modulus fiber capable of meeting the international standard. The method has less investment, adopts easily obtained low-cost raw materials, and has high productivity and simple process operation, and the manufactured high wet modulus fiber has excellent quality and stable performance.

Description

Technical field: [0001] The invention relates to a method for producing regenerated cellulose, in particular to a high wet modulus fiber. Background technique: [0002] The gloss, softness, moisture absorption, dyeability, and color fastness of the high wet modulus fiber are better than pure cotton products; the fabric made with it shows a silky luster with a pleasant soft touch feeling and drape Sensation and excellent durability. [0003] At present, the high wet modulus fibers made in China and put into the market cannot meet the international standards for high wet modulus fibers. Therefore, the fabric made with it cannot achieve the performance of high wet modulus products. [0004] Generally, the production of high wet modulus fibers requires high methylcellulose content pulp. In order to have a good impregnation effect, the hemicellulose content in the impregnation solution is low, and the viscose solution obtained has good filtration and spinnability properties. In the ce...

AI Technical Summary

Problems solved by technology

However, in cellulose pulp with low A-cellulose content < 95%, there are many impurities such as hemicellulose, if not effectively removed, it will affect the production and spinning of viscose, and it is difficult to produce high wet modulus fibers

For example, the Chinese patent application "High Wet Modulus Viscose Fiber and Its Preparation Method" of Publication No. CN101024907 discloses a method for preparing high wet modulus viscose fiber, but its production process has strict requirements on raw materials, requiring pulp Type A cellulose content ≥ 95%, this kind of pulp needs special processing, which increases the cost and difficulty of pulp manufacturing, especially wood pulp, which greatly increases the cost of raw materials for fiber production

In addition, the process conditions provided in this scheme are difficult to control, and the actual products cannot meet the international standards for high wet modulus fibers.