Water-soluble cement packaging material and preparation method thereof

Abstract

The invention relates to a water-soluble cement packaging material and a preparing method thereof. The water-soluble cement packaging material is prepared from, by weight, 80-120 parts of nanometer inorganic modified polyvinyl alcohol, 20-30 parts of water-soluble chitosan, 1-3 parts of plasticizer, 1-3 parts of surfactant, 0.2-0.5 part of defoaming agent, 0.5-0.6 part of propylene glycol fatty acid ester, 0.2-0.3 part of binder, 0.2-0.3 part of dispersant and 0-0.3 part of colorant through processing. The mass ratio of nanometer inorganic modified polyvinyl alcohol to water-soluble chitosan is 4:1, the plasticizer is a mixture of polyethylene glycol and acetamide in equal proportion, and the surfactant is a mixture of polyoxyethylene oil-based ether and polyoxyethylene octyl phenylate in equal proportion. The water-soluble material is wide in solution temperature range, high in solution efficiency and good in solution effect, debris residue hardly exists, further manual or mechanical treatment is not needed, and in addition the barrier performance and uniformity of a film are excellent.

Description

technical field [0001] The invention relates to a water-soluble cement packaging material and a preparation method thereof. Background technique [0002] Water-soluble polymer films are usually used in quantitative packaging materials to simplify dispersion, pouring, quantification and dissolution, such as quantitative packaging of cement, which can be fed directly without unpacking during use, and can be dissolved immediately after pouring water, avoiding human contact and cement dust At present, this type of packaging material has been widely used in the market, but this type of polymer film has high requirements for dissolution temperature. When the dissolution temperature is high, the dissolution efficiency is high, the dissolution performance is good, and there is almost no debris residue. When the dissolution temperature is lowered , the dissolution efficiency is significantly reduced, requiring a long dissolution time, affecting work efficiency, and even a large numbe...

AI Technical Summary

Problems solved by technology

[0002] Water-soluble polymer films are usually used in quantitative packaging materials to simplify dispersion, pouring, quantification and dissolution, such as quantitative packaging of cement, which can be fed directly without unpacking during use, and can be dissolved by pouring water to avoid human contact and cement dust At present, this type of packaging material has been widely used in the market, but this type of polymer film has high requirements for dissolution temperature. When the dissolution temperature is high, the dissolution efficiency is high, the dissolution performance is good, and there is almost no debris residue. When the dissolution temperature is lowered , the dissolution efficiency is significantly reduced, requiring a long dissolution time, affecting work efficiency, and even a large number of debris, affecting the quality of concrete. In addition, the existing packaging materials have poor barrier properties, and the presence of external air and moisture in the packaging bag Possibility of air replacement, affecting the shelf life and quality of cement