Comparative Study of NR/BR/PP and NR/NBR/PP Ternary Blends for High Abrasion Resistant Thermoplastic Vulcanizates

Abstract:

High abrasion thermoplastic vulcanizates (TPVs) based on natural rubber (NR)/butadiene rubber (BR)/polypropylene (PP) and NR/acrylonitrile butadiene rubber (NBR)/PP were prepared using melt blending method. The rubber blends of 40/60 NR/BR and 40/60 NR/NBR were firstly prepared to investigate their mechanical and wear-resistant properties. The results indicated that the abrasion resistance of NR/BR blend was much higher than that of the NR/NBR blend, but the tensile strength and elongation at break were lower. TPVs made of NR/BR/PP and NR/NBR/PP blends were then prepared by melt-mixing the rubber blends (i.e., NR/BR or NR/NBR) and PP with composition of rubber to plastic of 60/40. It was found that the NR/BR/PP TPV showed higher strength and abrasion resistance when compared with the NR/NBR/PP TPV due to smaller domain of vulcanized rubber particles. The present study also suggested that the abrasion resistance of NR/BR/PP TPV was slightly lower than that of nylon 6.

• Periodical: Advanced Materials Research (Volume 844)
• Pages: 131-134
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.844.131
• Online since: November 2013
• Authors: Soriya Inted, Natinee Lopattananon, Bencha Thongnuanchan, Azizon Kaesaman
• Keywords: Abrasion Resistance, Natural Rubber (NR), Nitrile Rubber, Polybutadiene Rubber, Polypropylene (PP), Thermoplastic Vulcanizates

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