Temperature-sensitive color-changing coating

Abstract

The embodiment of the invention provides a temperature-sensitive color-changing coating, which comprises following components by weight part ratio: 20 to 160 parts of temperature-sensitive polymers, 2 to 20 parts of film forming agents, 0.2 to 5 parts of thickening agents, 0.5 to 10 parts of dispersing agents, 0.1 to 5 parts of defoaming agents and 100 to 500 parts of solvents. Through the adoption of the temperature-sensitive color-changing coating provided by the invention, the color of an outer wall of a building can change at a certain critical temperature; when the actual temperature is higher than the critical temperature, the coating is white and can reflect 80 percent of heat; when the actual temperature is higher than the critical temperature, the coating is colorless and the color of the outer wall material self is exposed; and if the color of the outer wall self is black, the best sun heat absorbing effect is achieved and 80 percent of the sun heat can be absorbed, so that the effects of indoor comfortable temperature maintenance, reduction of the use of air conditioners and heating equipment, and energy source conservation are achieved.

Description

technical field [0001] The invention relates to the technical field of building exterior wall materials, in particular to a temperature-sensitive color-changing paint. Background technique [0002] Whenever the hot summer comes, people always like to choose to wear white clothes to go out. Not only do humans need to wear light colors to stay cool in the sun, buildings also need white roofs to avoid exposure to the sun. Many people may not realize that the roofs and facades of buildings are inadvertently contributing to soaring temperatures. [0003] Research data shows that the reflectivity of traditional black roofs to sunlight is only 20%, while the sunlight reflected by white roofs is as high as 90%. If the outside temperature is 32°C, the surface temperature of the black roof can be as high as 82°C, and the heat it absorbs can heat the room to around 46°C. In the same situation, the surface of the white roof is kept at a constant temperature of 38°C, which keeps the i...

AI Technical Summary

Problems solved by technology

Among them, among temperature-changing paints, high-temperature discoloration is relatively easy to achieve, while low-temperature discoloration, especially in the temperature range of the natural environment (0-50°C), is very difficult to achieve, and the cost of raw materials is high, so it cannot be used in the construction industry on a large scale