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Outdoor Aging of Adhesive Sealants
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English
Abstract
Aging of adhesive sealants such as polysulfides and silicones is usually restricted to accelerated aging in ovens and other laboratory environments. A need for extended aging under actual outdoor conditions has long existed. This report describes the results of five-year aging tests on five different types of polysulfide and silicone adhesive sealants under various environments, including semi-arid and marine type outdoor aging sites. These are compared to oven aging and ambient shelf aging results. Data on continuous exposure for twelve months to high humidity with cycling temperatures is also included. The results indicate that a marine climate is the worst exposure condition. The results also show that a manganese peroxide cured to polysulfide is more sensitive to a marine climate than is a lead peroxide cured polysulfide.
Topic
Citation
DeLollis, N. and Montoya, O., "Outdoor Aging of Adhesive Sealants," SAE Technical Paper 710266, 1971, https://doi.org/10.4271/710266.Also In
References
- Thomas, J. P. “Accelerated Aging Tests and Life Aging Properties of Aircraft Metal Adhesives,” ASTM Bulletin January 1959 5863
- Miller, D. F. “Effect of Natural Environment on Douglas Honeycomb Sandwich Construction,” ASTM Fourth Pacific Area National Meeting October 1-5 1962
- Bodnar, M. J. Wegman, R. F. “Effect of Outdoor Aging on Unstressed, Adhesive-Bonded Aluminum to Aluminum Lap Shear Joints,” Sampe Journal August September 1969