Nano cermet solar heat-absorption coating material and preparation method thereof
A technology of solar heat absorption and metal ceramics, which is applied in the direction of radiation-absorbing coatings, coatings, anti-corrosion coatings, etc., can solve the problems of low thermal efficiency of solar flat collectors, expensive raw materials, high emissivity of coatings, etc. The solar energy absorption range, the preparation method is simple, and the effect of expanding the application field
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Embodiment 1
[0031] A nanoscale cermet solar heat absorbing coating material, the formula of which is as follows:
[0032] 40 parts of silicone resin, 2 parts of curing agent, 11 parts of absorbent, 2 parts of absorption enhancer, 33 parts of auxiliary agent, 13 parts of cermet material, 7 parts of thermal conductive material. The resin is epoxy-modified silicone resin; the curing agent is m-xylylenediamine; the absorbent is nano-titanium dioxide doped with silicon dioxide and calcium carbonate, wherein the mass percentage of silicon dioxide is 5%, calcium carbonate The mass percentage content is 1%, the particle diameter of nano-titanium dioxide is 50nm, and the particle diameter of silicon dioxide and calcium carbonate all belongs to nanoscale; The absorption enhancer adopts 2-bromo-2-(2-fluorophenyl)-1 -Cyclopropyl ethyl ketone; ethyl acetate is used as additive; tungsten boride ceramic material is used as cermet material; graphene is used as heat conduction agent.
[0033] Its prepara...
Embodiment 2
[0039] A nanoscale cermet solar heat absorbing coating material, the formula of which is as follows:
[0040]50 parts of silicone resin, 7 parts of curing agent, 12 parts of absorbent, 4 parts of absorption enhancer, 45 parts of auxiliary agent, 17 parts of cermet material, and 13 parts of thermal conductive material. The resin is polyester-modified silicone resin; the curing agent is diethylamine; the absorbent is nano-titanium dioxide doped with silicon dioxide and calcium carbonate, wherein the mass percentage of silicon dioxide is 11%, and the mass percentage of calcium carbonate is The percentage content is 3%, the particle size of nano-titanium dioxide is 500nm, and the particle size of silicon dioxide and calcium carbonate belongs to nanoscale; the absorption enhancer adopts 2-bromo-2-(2-fluorophenyl)-1-ring Propyl ethyl ketone; n-heptane is used as additive; titanium carbide cermet material is used as cermet material; carbon fiber is used as heat conduction agent.
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Embodiment 3
[0047] A nanoscale cermet solar heat absorbing coating material, the formula of which is as follows:
[0048] 45 parts of silicone resin, 5 parts of curing agent, 12 parts of absorbent, 3 parts of absorption enhancer, 39 parts of auxiliary agent, 15 parts of cermet material, and 9 parts of thermal conductive material. The resin adopts high-gloss silicone resin; the curing agent adopts diaminodiphenylmethane; the absorber adopts nano-titanium dioxide doped with silicon dioxide and calcium carbonate, wherein the mass percentage of silicon dioxide is 8%, and the mass percentage of calcium carbonate The percentage content is 2%, the particle size of nano-titanium dioxide is 300nm, and the particle size of silicon dioxide and calcium carbonate belongs to nanoscale; the absorption enhancer adopts 2-bromo-2-(2-fluorophenyl)-1-ring Propyl ethyl ketone; n-heptane is used as additive; molybdenum silicide cermet material is used as cermet material; thermal conductive silicone grease is u...
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