Solar-selective paint coating development. Final report
Formulations and process conditions for thickness-sensitive paint coatings were defined. New pigments were evaluated, but none were found which can be used as a substitute for Ferro's F-6331. Coating thermal stability, weathering and humidity resistance, and effects of pigment agglomeration size on coating optical performance were studied. Eighteen hundred square feet of aluminum foil were coated in the first large-scale application with optical properties of ..cap alpha../sub s/ = 0.90 and epsilon = 0.25. This demonstrated that a high-speed laminator is capable of producing a coating with uniform optical properties by a roll coating technique. Thickness-insensitive paint coatings were developed with urethane, acrylic, and silicone binders. This type of coating combines the selective coatings currently under development and aluminum flake to provide the low emittance substrate. By varying the ratio of paint to flake, selective properties of ..cap alpha../sub s/ = 0.90 and epsilon = 0.31 were achieved. The silicone systems showed the best optical performance. Aluminum powder which gave larger surface area was evaluated and found not feasible. Washing and aging techniques of the aluminum flake were studied in an attempt to improve optical performance. (MHR)
- Research Organization:
- Honeywell, Inc., Minneapolis, MN (USA)
- Sponsoring Organization:
- USDOE Office of Conservation and Solar Applications
- DOE Contract Number:
- AC04-78CS34287
- OSTI ID:
- 5140021
- Report Number(s):
- DOE/CS/34287--T1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
141000* -- Solar Collectors & Concentrators
ALUMINIUM
BINDERS
BLACK COATINGS
CARBAMATES
CARBONIC ACID DERIVATIVES
CARBOXYLIC ACID SALTS
COATINGS
COST
ELEMENTS
EQUIPMENT
FLAT PLATE COLLECTORS
FOILS
METALS
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PAINTS
PERFORMANCE
PHYSICAL PROPERTIES
POLYMERS
SILICONES
SILOXANES
SOLAR ABSORBERS
SOLAR COLLECTORS
SOLAR EQUIPMENT
SPECTRALLY SELECTIVE SURFACES
SURFACES
TESTING
URETHANE
141000* -- Solar Collectors & Concentrators
ALUMINIUM
BINDERS
BLACK COATINGS
CARBAMATES
CARBONIC ACID DERIVATIVES
CARBOXYLIC ACID SALTS
COATINGS
COST
ELEMENTS
EQUIPMENT
FLAT PLATE COLLECTORS
FOILS
METALS
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PAINTS
PERFORMANCE
PHYSICAL PROPERTIES
POLYMERS
SILICONES
SILOXANES
SOLAR ABSORBERS
SOLAR COLLECTORS
SOLAR EQUIPMENT
SPECTRALLY SELECTIVE SURFACES
SURFACES
TESTING
URETHANE