Recycling of Used Hydrogenated Nitrile Butadiene Rubber Through Powder Modification by Trans-Polyoctylene Rubber

Abstract

This paper mainly explores the modification of hydrogenated nitrile butadiene rubber (HNBR) powder with trans-polyoctylene rubber (TOR), and the application of the modified HNBR powder in the rubber lining of oil-resistant HNBR hose. The HNBR powder modified by the TOR was prepared, and different dosages of modified powder were filled into the HNBR lining. The resulting specimens were subjected to compression test, aging test, medium resistance test, etc. The results show that the rubber filled with modified powder always outperformed the rubber filled with original powder, indicating that the TOR improves the compatibility between rubber and powder; With the growing dosage of rubber powder, the rubber compound saw a decline in hardness, tensile strength, elongation and tear strength, but a rise in compression set; The aged rubber compound had a greater hardness and tensile strength, but a smaller elongation than the original rubber compound; The cost effectiveness of the rubber compound was maximized when 15 parts of rubber powder were added; In this case, all physical properties were all far above the standard for the rubber lining of oilresistant rubber hoses. The research results help to promote the recycling of used rubber and improve the environment.