但继续老化后，主链断裂逐渐占据主导地位，发生了氧化裂解，使橡胶力学性能和交联密度下降，压缩永久变形率增加；
With the aging time increasing, degradation effect became more superior, mechanical property and crosslink density decreased, while Compression permanent distortion increased.
随着硫化助剂用量增加，TAIC共混胶的拉伸强度、拉断伸长率和撕裂强度均大于PDM共混胶，而压缩永久变形的变化率正好相反。
The tensile strength, elongation at break and tear strength of TAIC were higher than those of PDM while the compression set was opposited.
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