采用加速老化试验方法对ZN－１阻尼橡胶材料的热氧老化性能进行了研究，获得了不同老化温度 及老化时间对硅橡胶泡沫材料力学性能及阻尼性能的影响规律。研究结果表明，随着老化温度的升高及老 化时间的延长， ZN－１的拉伸强度出现了先下降后升高的现象，而扯断伸长率则表现为单调下降的趋势。同 时，还研究了ZN－１阻尼橡胶材料在热氧老化条件下微观结构与性能变化之间的关系，得到了ZN－ １阻尼橡 胶材料的热老化机理。

The thermal- oxydative ageing properties of ZN-1 damping rubber materials were investigated by using accelerated ageing test , then the relations between different ageing temperatures and ageing time and mechanical properties and damping properties of ZN-1 damping rubber materials were obtained . The results showed that with increasing ageing temperature and time , the tensile strength of ZN-1 damping rubber materials firstly decreases to a certain value and then increases ; the tensile elongation of ZN-1 damping rubber materials decreased . Finally , the ageing mechanisms of ZN-1 damping rubber materials were deduced from some analyses of the relation between macroscopical properties and microstructure

张凯（1973－），男，重庆市人，中国工程物理研究院总体工程研究所高级工程师，博士，主要从事功能高分子材料的研制与应用