Heat-absorbing coating for solar metal inner liner

Abstract

The invention relates to a heat-absorbing coating for a solar metal inner liner. The heat-absorbing coating comprises the following components in parts by weight: 40-50 parts of ferric oxide, 10-15 parts of tetrafluoroethylene powder, 10-15 parts of selenium cadmium sulfide, 10-15 parts of manganese dioxide, 70-80 parts of single-component polyurethane resin, 80-90 parts of thermosetting acrylic resin, 5-10 parts of cobalt naphthenate solution, 40-50 parts of n-butanol, 30-40 parts of xylene and 15-20 parts of calcium chloride. The solar energy absorption rate of the product is 95%-98%, the emission rate is 15%-18%, and the heat collection efficiency of the solar metal inner liner is greatly improved; the heat-absorbing coating further has the advantages of wear resistance, resistance to acid and alkali corrosion and excellent heat absorption effect; the product further has the advantages of heat resistance, cold resistance and long service life, and can be widely produced and used for continuously replacing existing materials.

Description

technical field [0001] The application belongs to the field of metal coatings, in particular to a heat-absorbing coating for a solar metal liner. Background technique [0002] A scientist named Milcher in Australia successfully developed a coating that can effectively absorb solar energy. The first layer of paint is an anti-sunlight reflective layer made of silicon oxide, which only absorbs and does not reflect sunlight irradiated on the paint to prevent heat loss. The second layer is a cermet layer that absorbs the heat of the sun. The third layer is a metal layer with good thermal conductivity. The total thickness of these three layers is only 100 nanometers. After experiments, this new type of coating can convert 98% of the received sunlight into heat energy, and the total efficiency of heat energy into electrical energy can reach more than 20%. [0003] Solar water heaters convert sunlight energy into heat energy, and heat water from low temperature to high temperatur...

AI Technical Summary

Problems solved by technology

[0005] In view of the above technical problems, the present application provides a heat-absorbing coating for solar metal liners, which solves the technical problems of low solar energy absorption rate, high emissivity, low light-to-heat conversion efficiency and low service life of existing solar metal liner heat-absorbing coatings.