| abstract |
The invention relates to the use of a precipitated silica, pretreated by at least one organosilane hydrophobic compound or one hydrophobic silicone oil, as a reinforcing filler for silicone elastomer, the pretreated silica being incorporated in the silicone elastomer by cold mixing and having the following features: —a BET specific surface ranging from 50 to 450 m 2 /g, —a water wettability lower than 80, —a sulfur content lower than 0.1% by weight. The invention is directed to the curable silicone elastomer composition thus obtained. |