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Effect of Filler on the Physical Properties of Silicone Rubber Impression Material  

Chung, Kyung-Ho (Dept. of Polymer Engineering, The University of Suwon)
Kang, Seung-Kyung (Dept. of Polymer Engineering, The University of Suwon)
Publication Information
Elastomers and Composites / v.41, no.3, 2006 , pp. 157-163 More about this Journal
Abstract
In this study, the wettability and mechanical properties of silicone rubber impression material were studied by using precipitated silica and fumed silica with different particle size and polarity (hydrophilic/hydrophobic). Curing time of impression material depended on the particle size of fumed silica. The curing time delayed about 9 minutes by using A300, which was the fumed silica with the smallest particle size among the silica used in this study. Wettability of rubber impression material improved with the introduction oi hydrophobic fumed silica(R972). Also, the optimum flow and mechanical properties could be obtained by using blended silica with the 90: 10 ratio of precipitated and fumed silica.
Keywords
silicone; rubber impression material; fumed silica; wettability; tear strength;
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  • Reference
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