Method for producing wood pulp sponge

Abstract

The invention discloses a method for producing wood pulp sponge. The method is as follows: using wood pulp as the main raw material, soaking, squeezing, yellowing, gluing, mixing, foam forming and washing with water to obtain the biodegradable wood cellulose sponge product, wherein (a) soaking process: adding sodium hydroxide and wood pulp into a dip vat in a mixing manner to prepare wood pulp; (b) squeezing process: placing the soaked wood pulp into a presser to obtain compressed alkali cellulose blocks; (c) yellowing process: smashing the alkali cellulose blocks after standing into particles or small lumps of alkali cellulose using a mill, and introducing an excess ratio of carbon disulfide gas for yellowing reaction; (d) gluing process: putting xanthate and additional wood pulp, bamboo pulp and water into a kneader for mixing to prepare a gluing material; (e) mixing process: mixing the gluing material with sodium sulfate crystals and toner ribbon to prepare a heat foaming sponge mixture; (f) foam forming process: preparing sponge blocks using the sponge mixture.

Description

technical field

[0001] The invention relates to a method for making a wood pulp sponge product made from wood pulp as a main raw material, and belongs to the technical field of sponge product preparation. Background technique

[0002] Sponge is a general term for a porous material foam. According to the different raw materials used, various sponge products with different properties can be prepared. It has good water absorption and can be used for cleaning items. At present, the main sponge products on the market are synthetic resin sponges made of polyurethane or similar polymer materials through foaming. It has low cost, wide range of uses, and good water absorption effect. Those sponge mops are used as a common household cleaning appliance; however, the sponge products made of polymer materials have certain environmental pollution and cannot be degraded and regenerated; and after long-term use, they are easy to deteriorate, become hard and reduce the service life. [000...