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巨大的太阳能作为人类的一种重要的、具有商业价值的能源加以利用,终将是要实现的。要达到这一目标,就光——热转换系统来说,研制具有高效率的吸收材料是极为重要的。用0.1μ枝蔓晶体的硫化铅作选择性吸收剂,以氟树脂或氟橡胶作粘合剂,配制成涂料,将涂料喷涂于抛光的铝板或镀锌铁皮上,使涂层厚度在0.6mg/Cm~2左右,可获得吸收率α=0.85～0.91,辐射率ε=0.23～0.40的选择性吸收涂层。涂层耐热达280℃。若集热面的温度小于220℃时,可采用以乙丙橡胶为粘合剂的硫化铅选择性涂料,其吸收率同
Huge solar energy, as an important and commercially valuable source of energy for human use, will eventually come to fruition. To achieve this goal, in the light - heat conversion system, the development of highly efficient absorbent material is extremely important. 0.1μ dendritic crystals of lead sulfide as a selective absorbent, fluororesin or fluororubber as a binder, formulated as a coating, the coating sprayed on the polished aluminum or galvanized sheet metal, the coating thickness of 0.6mg / Cm ~ 2 or so, the selective absorption coating with the absorption rate α = 0.85-0.91 and the emissivity ε = 0.23-0.40 can be obtained. The coating is resistant to 280 ℃. If the collector surface temperature is less than 220 ℃, the use of ethylene-propylene rubber as a binder of lead sulfide selective coating, the absorption rate of the same