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Effects of moisture on structural silicone rubber sealants used in window glazing applications
When a structural sealant is exposed to moisture, a number of phenomena are known to occur which may cause it to deteriorate. The degree of deterioration, however, is a function of various parameters such as the type of sealant, the time of curing, etc. Silicone sealants are widely used for structural glazing applications because of their good resistance to weathering. In this study, moisture effects on commercial silicone sealants were monitored by observing changes in their physical properties. The moisture was applied as a water spray in which the pH of the water ranged from 3 to 11. The extremes of the pH range represent recorded values for acid rain (pH of 3) and basic cleaning solutions (pH of 11). Laboratory evaluations of deterioration were based on changes in tensile tangential modulus, percentage elongation and ultimate tensile stress.
Effects of moisture on structural silicone rubber sealants used in window glazing applications
When a structural sealant is exposed to moisture, a number of phenomena are known to occur which may cause it to deteriorate. The degree of deterioration, however, is a function of various parameters such as the type of sealant, the time of curing, etc. Silicone sealants are widely used for structural glazing applications because of their good resistance to weathering. In this study, moisture effects on commercial silicone sealants were monitored by observing changes in their physical properties. The moisture was applied as a water spray in which the pH of the water ranged from 3 to 11. The extremes of the pH range represent recorded values for acid rain (pH of 3) and basic cleaning solutions (pH of 11). Laboratory evaluations of deterioration were based on changes in tensile tangential modulus, percentage elongation and ultimate tensile stress.
Effects of moisture on structural silicone rubber sealants used in window glazing applications
Keshavaraj, Ramesh (author) / Tock, Richard W. (author) / Vallabhan, C.V.G. (author)
Construction and Building Materials ; 8 ; 227-232
1994-01-01
6 pages
Article (Journal)
Electronic Resource
English
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