“动态硫化”PVC/NBR型TPE的耐油性能研究

Study on the Oil Resistance of PVC/NBR TPE with Dynamic Vulcanizing

本文系统地研究了ＰＶＣ／ＮＢＲ型热塑性弹性体（ＴＰＥ），并与ＮＢＲ进行了对比。实验结果表明，ＰＶＣ／ＮＢＲ型ＴＰＥ在耐无铅汽油、含醇汽油、氧化汽油等方面均优于ＮＢＲ硫化胶，能满足一些领域对耐油性新的要求。本文并以ＴＰＥ的“协同网络”结构上阐述了ＴＰＥ耐油性能提高的内在原因，结果表明，正是由于ＴＰＥ的“协同网络”结构，才阻止了溶剂分子的渗透，降低了渗透速率。

The Oil resistance of dynamically vulcanized PVC/NBR thermal plastic elactomer(TPE)was systematically investigated in this paper.Results showed that this TPE had better resistance to oils ,especially to lead-free-gasoline,alcohol-contained galoline and oxygenated gasoline. The main reason for this is the existence of the Synergistic Networkis TPE.The synergistic network Could prevent oils and solvents from permeating, Lower the permeating rate and as a results, increase the oil resistamce.