ATBN/MP复合增容NBR/PP热塑性硫化胶

研究了端氨基液体丁腈橡胶(ATBN)和马来酸酐接枝聚丙烯(MP)对NBR／PP共混体系的增容效果。采用TEM，SEM，DSC分析了NBR／PP共混体系的相态结构及其PP的结晶行为。结果表明，ATBN／MP是NBR／PP共混体系较理想的增容剂，当ATBN用量为5份，MP为10份时，增容效果最佳；增容剂存在一个临界胶束浓度(CMC)，当增容剂浓度大于CMC时，增客剂的增容作用变差。增容良好的NBR／PP共混体系经过动态硫化后，可制备相态结构精细、性能优异的NBR／PP热塑性硫化胶；界面结合加强后，其流动性能略有下降。

NBR/PP thermoplastic vulcanizates compatibilized by ATBN/MP

The effects of addition of amine terminated liquid NBR(ATBN) and maleic-modified polypropylene(MP) on the NBR/PP blends were investigated. The morphology of the blends by TEM and SEM and the crystalline state of the PP by DSC were studied. The results showed that ATBN/MP was a desired compatibilizer for NBR/PP blends. The compatible effect was optimum when the ATBN was 5 phr and the MP was 10 phr. The compatibilizer had a critical micelle concentration(CMC),above which the compatibilizer could not modify the interface any more. The compatibilizer that had excellent compatible effects in the uncured NBR/PP blends could also act as good compatibilizer for preparing TPV with fine morphology and outstanding properties. The flow property of TPV had a little decline when interfacial combination was intensified.