Experiment result shows that adding different modifier would affect the polypropylene dynamic property by different level.

实验结果表明,加入不同的改性剂对聚丙烯的力学性能均有不同程度的影响.

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The dynamic property of NR vulcanizates after thermal ageing increased , while decreased slightly after anaerobic ageing.

热空气老化使NR硫化胶的动态性能改善, 而真空老化后硫化胶动态性能略有下降.

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