Waterproof anti-crack environment-friendly coating and preparation method thereof

Abstract

The invention discloses a preparation method of waterproof anti-crack environment-friendly coating. The preparation method comprises the following steps: mixing 35 to 55 parts of attapulgite, 12 to 16 parts of sericite, and 10 to 17 parts of titanium dioxide to obtain a mixture I, putting the mixture I into a grinding machine for grinding, so as to obtain a substance A; adding the substance A, 20 to 30 parts of a styrene-acrylic emulsion and 11 to 18 parts of polyethylene glycol into a stirring device, and carrying out stirring at 60 to 80 DEG C for reaction, so as to obtain a substance B; adding 8 to 15 parts of betulin, 12 to 16 parts of hydroxypropyl methyl cellulose, and 7 to 13 parts of phosphoglyceride into the substance B in sequence under the condition that stirring is carried out continuously, and carrying out a primary reaction at 80 to 100 DEG C; adding 2 to 8 parts of silver oxide, 3 to 7 parts of zinc sulfate, and 2 to 7 parts of carbohydrazide, and carrying out a secondary reaction for 40 to 60 minutes; carrying out cooling and drying to obtain the waterproof anti-crack environment-friendly coating. The waterproof anti-crack environment-friendly coating prepared according to the preparation method not only has application properties of common coating, but also is environment-friendly, generates no pollution to human bodies and the ambient environment, and is excellent in water resistance and anti-crack property, and wide in application prospect.

Description

technical field [0001] The invention belongs to the field of coatings, and relates to a waterproof and anti-cracking environmental protection coating and a preparation method thereof. Background technique [0002] Coatings are mixtures of polymer substances and other ingredients that can be applied to the surface of a substrate to form firm adhesion. At present, coatings have become my country's five major synthetic materials along with plastics, synthetic rubber, synthetic fibers, and adhesives. The development of the coatings industry is an important symbol of the development level of a country's chemical industry. During the drying and film-forming process of traditional coatings, harmful volatile gases will be released into the air, which seriously threatens human health. Therefore, the research on coatings is increasingly inclined to the direction of environmentally friendly coatings. The waterproof performance of existing environmental protection coatings is not ideal...

AI Technical Summary

Problems solved by technology

The waterproof performance of the existing environmentally friendly coatings is not ideal. At the same time, after the repeated process of rainwater washing and sun exposure, as well as when the temperature is too low, it is easy to cause cracks or even fall off of the coating, which affects the appearance and use.