High-efficiency solar heat absorbing material

Abstract

The invention discloses a high-efficiency solar heat absorbing material, which is a large-area heat absorbing material formed by mixing graphene, graphite, an auxiliary material and a catalyst, and then performing extrusion, blow molding and hot melting. The auxiliary material is a mixture of acrylonitrile-butadiene-styrene, ethylene-vinyl acetate copolymer, polyvinyl chloride, polypropylene, polyphenylene sulfide, silicon carbide, boron nitride, iron black, iron blue, iron red, chromium oxide, titanium nitride, CuFeMnO4, alumina, magnesia, zinc oxide, beryllia and silver powder. The catalystincludes a titanate coupling agent, a compatibilizer, and silicone powder. The compatibilizer refers to a maleic anhydride grafted compatibilizer such as maleic anhydride grafted PE and maleic anhydride grafted PP. The titanate coupling agent is preferably NDZ-201, and is diluted with white oil in equal proportions. The solar heat absorbing material can be in direct contact with water, has super absorption, less heat loss, fast heating, and high thermal efficiency, and can achieve mass production.

Description

technical field [0001] The invention discloses a high-efficiency solar heat absorbing material, which belongs to the technical field of heat absorbing materials. Background technique [0002] As a kind of green energy, solar energy has no pollution to the environment, and its source is simple, so it can be said that it is inexhaustible within the life span of human beings. Solar energy is not only a one-time energy source, but also a clean energy source. It is abundant in resources, ubiquitous, free of transportation, free to use, and most importantly, has no pollution to the environment. [0003] At present, most solar water heaters in my country use built-in heat collecting tubes. The heat collecting tubes are made of two layers of glass vacuum tubes. [0004] Traditional solar energy conducts heat through a small area of ​​the heat collecting tube to heat the water. Since the heat collecting tube is placed vertically, the parts exposed to sunlight only account for 30% of...

AI Technical Summary

Problems solved by technology

[0003] At present, most solar water heaters in my country use built-in heat collecting tubes. The heat collecting tubes are made of two layers of glass vacuum tubes.

[0004] Traditional solar energy conducts heat through a small area of ​​the heat collecting tube to heat the water. Since the heat collecting tube is placed vertically, the parts exposed to sunlight only account for 30% of the entire heat collecting tube. Heat pipe burst and other safety hazards

[0005] Traditional solar collector tubes use copper oxide, black nickel, black chrome, black zinc, black copper and other solar selective absorption coatings, which have high emissivity and low thermal efficiency