The Research On Interfacial Adhesion Between Short Uhmwpe Fiber And Natural Rubber

The interfacial adhesion between the short fibers and rubber matrixhas a great impact on the performance of short fiber reinforced rubbercomposite products. A variety of methods are attempted to improve theactivity of the fiber surface and enhance adhesion with the rubbermatrix so that the interfacial adhesion level can be strengthened. Or wecan improve the varieties of fiber and produce various fibers withdifferentiation. For example, aramid pulp is the improved one ofaramid fiber.Ultra-high molecular weight polyethylene fiber is one ofhigh-performance fiber products in recent years with rapiddevelopment. Compared to the previous fiber products, it shows higherstrength and higher modulus and lower melting point between130℃and160℃. By controlling the temperature and time in the curingprocess, according to the lower melting point of ultra-high molecularweight polyethylene fibers, a better curing temperature and time forinterfacial adhesion between short fiber in composites and rubbermatrix were identified. Our work was the first attempt of blend analysis using ultra-highmolecular weight polyethylene fiber and natural rubber matrix toexplore interfacial adhesion between the fiber and rubber matrix. Inaddition, UHMWPE-NR system was utilized to optimize curingtemperature and time, and through observation and analysis of themicroscopic structure and dynamic mechanics, the rationality ofevaluation method of interfacial adhesion was verified.We improved the approach of the evaluation of interfacial adhesionand utilized the interfacial slippage to preliminarily analyze the curingtemperature and time for the best level of adhesion between fiber andrubber matrix in UHMWPE-NR system. We also provided effectiveestimation and analysis for interfacial adhesion level between fiber andrubber matrix in UHMWPE-NR system by DMA analysis of compositematerials.