Abstract
With the further development of secondary exploitation in oil field, it is very important to design high performance rubber used in drilling and mining tools. In this paper, polyamide 6/nitrile rubber (PA6/NBR) blends were prepared by three-step molding process. The reinforcing effect of PA6 in NBR with different acrylonitrile content was explored. The crystal properties, crystal structure, phase separation morphology and mechanical properties of the blends were systematically analyzed. The results showed that the fibrosis degree of PA6 phase was higher and the reinforcement effect was more obvious, when the content of acrylonitrile in NBR matrix was lower. Based on the experimental results, the reinforcement mechanism is fully explained and the morphology evolution model of PA6/NBR was established.
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