| 摘要 |
A noise-reducing foam member for prolonged exposure to ultraviolet radiation without degradation consists essentially of a major proportion of a room-temperature silicone rubber foaming material and minor proportions of a room-temperature foaming curing agent and at least two and preferably three ultraviolet stabilizing materials selected from the group consisting of carbon black, cerium oxide, 2(2'-hydroxy-3',5'-di-tert-amylphenyl) benzotriazole and zinc oxide. The foam member is made by mixing together suitable quantities of the silicone rubber foaming material, the ultraviolet stabilizing materials and the curing agent. The mixture is then cured to provide the foam member.
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