Abstract
This paper reports the heat and oil resistant hydrogenated acrylonitrile butadiene rubber (HNBR)/Polyamide 12 (PA12) blends prepared by electron beam irradiation. Electron beam irradiated blends are characterized by processing behaviour like thermoplastic at elevated temperature and performance properties of vulcanized rubber at ambient temperature. In the present work, a new class of blends based on Hydrogenated acrylonitrile butadiene rubber (HNBR) and polyamide (PA12) has been developed. The blends are cured with different radiation dosage at a fixed blend ratio (70:30) of (HNBR/PA12). The blend having the 75 kGy shows the highest level of mechanical properties as well as superior thermal stability. Dynamic mechanical analysis (DMA) also demonstrates the tanδ values of all the blends are lower and the storage modules are higher for HE-75 kGy blend system compared to other blend system. Heat aging, oil aging, oil swelling and cross-link density study have also been carried out in details to understand the performance behaviour of these blends at service condition (150 °C). These blends are considered to find potential application in automotive sector especially for automotive under-the-hood-applications.
Published Version
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