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- W12126908 abstract "In a program to evaluate materials for use as sealants and gaskets for flat-plate solar collectors, a total of 91 materials were examined. They included the following types: 10 commercial silicone caulks, 9 commercial fluoroelastomer preformed seals; 1 commercial fluorosilicone preformed seal, 6 commercial EPDM preformed seals, 8 commercial silicone preformed seals, 6 commercial acrylic preformed seals, 1 commercial ethylene-acrylic preformed seal, 1 commercial chlorobutyl preformed seal, 5 experimental silicone preformed seals, and 44 experimental fluorocarbon-silicone preformed seals. Properties measured were tensile strength, modulus, and elongation; compression set at 150/sup 0/C and at -10/sup 0/C; hardness, and weight loss. In addition, the more promising materials were subjected to long-term aging at several temperatures, with periodic measurements of tensile properties, weight loss, and compression set. Rough estimates based on extrapolation of compression set curves suggest a 10 year continuous service temperature of 145/sup 0/C for the best of them. The best of the silicone preformed seal materials gave a continuous 10 year life temperature of 116/sup 0/C, based on compression set, and of 98/sup 0/C, based on tensile strength and elongation. Four other silicones were in the range of 96 to 108/sup 0/C, based on compression set, which is probably themore » most significant property for this application. The best of the EPDM materials had a continuous 10 year life temperatures of 100/sup 0/C, based on average tensile properties, and 72/sup 0/C based on compression set. The best of the sealant caulks had a continuous 10 year life temperature of 95/sup 0/C, based on an end of life criterion of 3% weight loss.« less" @default.
- W12126908 created "2016-06-24" @default.
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- W12126908 date "1982-08-31" @default.
- W12126908 modified "2023-09-27" @default.
- W12126908 title "Improved solar-collector sealants. Final report, October 1980-July 1982" @default.
- W12126908 doi "https://doi.org/10.2172/6280982" @default.
- W12126908 hasPublicationYear "1982" @default.
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