Wide-temperature-range impact-resisting waterborne damping coating and preparation method thereof

Abstract

The invention discloses wide-temperature-range impact-resisting waterborne damping coating and a preparation method thereof. The waterborne damping coating is prepared from the following raw materialsin parts by mass: 35 to 65 parts of hard-core and soft-shell type acrylic emulsion, 40 to 80 parts of inorganic filler, 0.5 to 3 parts of propylene glycol, 2 to 5 parts of fibers, 0.5 to 3 parts of film forming auxiliary agent, 0.1 to 1 part of wetting dispersant, 0.1 to 1 part of de-foaming agent, 0.1 to 2 parts of thickening agent, 0.3 to 1 part of multifunctional auxiliary agent and 3 to 10 parts of water. The preparation method of the waterborne damping coating disclosed by the invention is simple; all components are uniformly mixed in sequence and in batches to obtain the waterborne damping coating. The waterborne damping coating disclosed by the invention has the advantages that a preparation technology is simple and a coating layer formed by curing the coating to form a film has excellent impact-resisting performance, good toughness and uneasiness for cracking; the waterborne damping coating has wide-temperature-range high damping performance.

Description

technical field [0001] The invention relates to a wide temperature range impact-resistant water-based damping coating and a preparation method thereof, belonging to the technical field of damping coatings. Background technique [0002] Damping coating is a functional coating with shock absorption, noise reduction, flame retardant, anti-corrosion and other properties, which is mainly realized by friction between polymer chains, between polymer and inorganic fillers, and between fillers. The dissipation of vibration energy can achieve the effect of vibration reduction and noise reduction, and provide people with a quiet living and working environment. [0003] Damping coatings can be divided into oily damping coatings and water-based damping coatings according to different dispersion media. Among them, the water-based damping coating uses water as the dispersion medium, the content of volatile organic compounds is very low, it is green and environmentally friendly, and it doe...

AI Technical Summary

Problems solved by technology

In order to ensure the impact resistance and flexibility of the coating film, it is often necessary to appropriately increase the amount of polymer emulsion in the blending formula. However, due to the poor high-temperature damping performance of the polymer emulsion, the increase in the content of the polymer emulsion will significantly reduce the high temperature of the coating film. Zone damping performance

Increasing the glass transition temperature of the polymer emulsion is conducive to improving the damping performance in the high temperature region, but the increase of the glass transition temperature will lead to a decrease in film-forming performance, impact resistance and flexibility.

At present, many studies on water-based damping coatings have been reported. The focus of the research is to broaden the effective temperature range of water-based damping coatings, but there are few reports on improving the impact resistance, flexibility and other mechanical properties of damping coatings.

Images