Preparation method for ring crush reinforcing agent of corrugated paper

Abstract

The invention belongs to the technical field of papermaking auxiliary agent preparation, and concretely relates to a preparation method for a ring crush reinforcing agent of corrugated paper. The preparation method comprises the following steps: an ethanol solution, N,N-dimethylformamide, polyglutamic acid and the like are firstly put to a reactor for reaction, then the pH is adjusted by ammonia water and the pH-regulated system is permitted to stand, petroleum ether is added, uniform stirring is performed, standing is permitted, a reaction mixture is collected, filtration is performed, filter residues are collected and the collected filter residues are washed by using ethanol, air drying is performed, the pH of the mixture of the obtained dried material, methacrylamide, diallyl dimethyl ammonium chloride and the like is adjusted by a sodium hydroxide solution under the protection of nitrogen gas, then an ammonium persulfate solution is added dropwise, and at the same time reaction is performed under a heating condition, then cold hydrogen is introduced for cooling, the cooled system is permitted to stand, material discharging is performed, the discharged materials are collected and reduced pressure distillation is performed, finally distillation remainder is collected, so that the ring crush reinforcing agent of the corrugated paper is obtained. According to the invention, the obtained ring crush reinforcing agent of the corrugated paper can effectively improve the ring crush strength of the corrugated paper, and meanwhile, the ring crush reinforcing agent provided in the invention has no residues during a sizing process, so that the problem of environmental pollution caused by the residual ring crush reinforcing agent is effectively avoided.

Description

technical field [0001] The invention belongs to the technical field of preparation of papermaking auxiliary agents, and in particular relates to a preparation method of a ring pressure enhancer for corrugated paper. Background technique [0002] In recent years, with the development of the economy and the improvement of people's material and cultural living standards, corrugated cardboard has developed rapidly as a green and environmentally friendly packaging material. The raw material of packaging paper and cardboard is mainly waste paper, but due to the repeated utilization of waste paper, its fibers are short, the mechanical strength is low, and the strength of paper is poor. How to improve the strength of cardboard has become an urgent problem in the paper industry. question. The reason why corrugated base paper can meet the needs of commodity transportation and packaging is mainly due to its special structure and good strength performance, among which ring crush streng...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention: the traditional ring pressure strengthening agent is a ring pressure strengthening agent formed of starch and starch oxidant. When using the traditional ring pressure strengthening agent for papermaking, the ring pressure strength of the paper is not high, and the There is residual ring pressure strengthening agent in the glue process, and it cannot be reused, thus bringing pollution to the environment. A preparation method of corrugated paper ring pressure strengthening agent is provided.