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A Study on the Engine Oil Resistant Behaviors of Room Temperature Vulcanizing Silicone Adhesives  

Park, Soo-Jin (Advanced Materials Division, Korea Research Institute of Chemical Technology)
Jin, Fan-Long (Advanced Materials Division, Korea Research Institute of Chemical Technology)
Kim, Jong-Hak (Reliability Assessment Center, Korea Research Institute of Chemical Technology)
Joo, Hyeok-Jong (Department of Polymer Science and Engineering, Chungnam National University)
Kim, Joon-Hyung (HS R & A Co. Ltd.)
Publication Information
Elastomers and Composites / v.40, no.3, 2005 , pp. 196-203 More about this Journal
Abstract
In this work, the engine oil resistant evaluation and breakdown analysis of room temperature vulcanizing silicone adhesives were performed through the surface properties, thermal stabilities, adhesive strength, and morphology measurements. As a result, the permeation of engine oil into adhesive specimens was carried out from surface to center in the specimens. And the oil content in the adhesive specimens was increased and the Si-O-Si bond of the adhesives was decomposed with increasing the aging time. The TGA results indicated that the thermal degradation was mainly occurred at under and surfaces of the specimens. The tensile strength, elongation, and adhesive strength of the adhesives were significantly decreased after the engine oil resistant tests, which could be attributed to the initial lose of adhesive properties resulting from the engine oil absorption and thermal aging. And the failure mode of the adhesive specimens was changed from cohesive failure to interfacial failure.
Keywords
room temperature vulcanizing; silicone; adhesives; engine oil resistance; surface properties;
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