| 摘要 |
Anti-tracking materials for high voltage applications, such as for anode cups for cathode ray tubes and insulator caps for spark plugs, are made by curing compositions of the invention comprising an elastomer, preferably a curable silicone rubber, a curing agent, and an oil, preferably a silicone oil, which is incompatible with the elastomer. The oil thus remains as such finely dispersed throughout the insulator. The compositions of the invention may also include mineral fillers such as hydrated alumina and silica, and optionally other materials. |
