Preparation method of industrial environment-friendly stone paper

Abstract

The invention provides a preparation method of an industrial environment-friendly stone paper. The method comprises the steps of: 1) preparing the following raw materials by weight: 70-80 parts of talcum powder or calcium carbonate, 20-25 parts of linear low density polyethylene with a melt index of 0.5-0.8, 2-3 parts of polyacrylamide, 1-2 parts of glycerol trihydroxystearate, and 10-15 parts of a phthalate coupling agent; and 2) putting the raw materials of last step into a high-speed mixer to conduct heating mixing, performing plasticization at 150-165DEG C, and carrying out calendering and casting process, thus obtaining the stone paper. The stone paper product obtained by the method provided by the invention has high quality index, high tensile strength and small proportion. The preparation technology involved in the invention has high yield up to more than 98%.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and in particular relates to a preparation method of industrial environment-friendly stone paper. Background technique [0002] With the improvement of environmental awareness and the transformation of economic development mode, the highly polluting traditional paper industry is facing urgent requirements for emission reduction and quality improvement. Stone paper, as a kind of synthetic paper with little pollution, is increasingly attracting people's attention, such as CN101851365B. [0003] However, the current research on the preparation process of stone paper is limited to its strength, degradability, water absorption and so on. For example, CN103865157A obtained stone paper with a water absorption of 200%, and CN104693710A and CN103980677A obtained completely biodegradable stone paper. However, for the paper industry, how to improve the economics of papermaking is the key to the wider ...

AI Technical Summary

Problems solved by technology

[0005] Although the papermaking process of stone paper has received high attention in recent years, the low yield rate is a major problem in this field

Generally speaking, the stability of the existing process is poor, and the qualification rate of products with a certain index or above is generally only about 80%, which is difficult to replace the traditional paper industry with excellent process stability.

The situation is even more unfavorable for the preparation of stone paper with excellent preparation