A method for improving the reaction performance of dissolving pulp plates

Abstract

The invention provides a method for improving the reaction property of a dissolving pulp board. The method comprises the following steps of adopting the dissolving pulp board with the thickness being 0.05cm to 0.50cm, and controlling the moisture content of the dissolving pulp board to be 2 percent to 10 percent for standby use; adopting cellulase for preparing a cellulase solution with the mass concentration being 5 percent to 10 percent, adopting strong acidic-weak basic salt for adjusting a pH value of the cellulase solution to be 4.5 to 5.5, and obtaining a cellulase solution for standby use; sequentially and uniformly spraying the cellulase solution for standby use and water on the processed dissolving pulp board, and preparing to react; putting the dissolving pulp board into a constant temperature and humidity room for reacting, wherein the temperature of the constant temperature and humidity room ranges from 40 to 60 DEG C, and the humidity of the constant temperature and humidity room is consistent to the moisture content of the sprayed dissolving pulp board. According to the method provided by the invention, the reaction property of the dissolving pulp board is improved, meanwhile, not only is the waste of water resource avoided, but also the energy consumption is reduced, and the method is lower in cost.

Description

【Technical field】 [0001] The invention relates to a method for improving the reaction performance of substances, in particular to a method for improving the reaction performance of dissolving pulp plates. 【Background technique】 [0002] Dissolving pulp is a special pulp in the pulp and paper industry. It is a refined pulp prepared by chemically treating plant fiber raw materials. Dissolving pulp has many characteristics, including high cellulose content, low lignin and other impurities, high brightness, and excellent reactivity. Dissolving pulp can produce regenerated cellulose, including viscose fiber, nitrocellulose and acetate cellulose, etc.; can prepare cellulose derivatives, including carboxymethyl cellulose, ethyl cellulose and methyl cellulose; can produce nanocellulose , including nanofibrillated cellulose and nanocrystalline cellulose. Therefore, dissolving pulp products and their derivatives have been widely used in many fields such as textiles, food packaging, ...

AI Technical Summary

Problems solved by technology

[0004] At present, bio-enzyme treatment is often used at home and abroad to improve the reaction performance of dissolving pulp raw materials. The basic steps are: first disintegrate the dissolving pulp board to obtain dissolving pulp, and then add water to dilute the dissolving pulp to a low concentration state (low concentration state of dissolving pulp ), and in this low concentration state, cellulase is used to treat dissolving pulp fibers, and then the enzyme-treated pulp is concentrated; this treatment technology will cause a large amount of water consumption, and it will cost additional Extrude the water with the energy to squeeze out the water, which not only causes waste of water resources, but also consumes a lot of energy and high cost; in addition, in the state of low dissolving pulp concentration, the existence of a large amount of free water will affect the cellulase and dissolving pulp fiber binding effect, thereby reducing the efficiency of cellulase