Method for preparing PVC (polyvinyl chloride) special dispersing agent by using durian peels

Abstract

The invention discloses a method for preparing a PVC (polyvinyl chloride) special dispersing agent by using durian peels. The method is implemented by taking durian peels as raw materials through the steps of carrying out uniform crushing and refining on the durian peels, extracting celluloses, and after carrying out etherification on the celluloses under alkaline conditions, obtaining hydroxypropyl methyl celluloses; and the dispersing agent is used in combination with a polyvinyl alcohol dispersing agent. The dispersing agent disclosed by the invention can effectively keep the void ratio and particle size of PVC-structured particles, and solves the compatibility problem in the process of PVC processing, so that the processing viscosity of PVC can be reduced, and the processing and molding of materials can be facilitated.

Description

technical field [0001] The invention relates to a method for preparing a chemical auxiliary agent, in particular to a method for preparing a PVC-specific dispersant by using durian peel. Background technique [0002] Durian skin is rich in cellulose, and in some countries and regions rich in durian in Southeast Asia, more than 10,000 tons of durian skins are discarded every year. Therefore how to deal with the durian skin has become a major issue in environmental protection in these countries and regions. According to the traditional landfill method, it takes up a lot of valuable land and costs a lot of money, but it doesn't fundamentally solve the problem of environmental pollution. [0003] At present, in the preparation process of PVC, it is often used to increase the stirring power for stirring or increase the amount of dispersant to achieve the purpose of uniform dispersion, so the consumption in the production process is increased to a certain extent, and the producti...

AI Technical Summary

Problems solved by technology

According to the traditional landfill method, it takes up a lot of valuable land, costs a lot of money, and does not fundamentally solve the problem of environmental pollution

[0003] At present, in the preparation process of PVC, it is often used to increase the stirring power for stirring or increase the amount of dispersant to achieve the purpose of uniform dispersion, so the consumption in the production process is increased to a certain extent, and the production cost is increased.