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Amphiphilic starch derivatives of this study / rubber micro multiphase composites can be given a special surface properties of the rubber products: both low rolling resistance and high wet skid resistance, improve antistatic properties, it is possible for the international research focus - - green tire material. Prepared on the basis of existing research, a variety of amphiphilic starch derivatives, including polystyrene grafted starch nanocrystals, benzyl starch nanocrystals and polystyrene grafted starch fine particles, replace or MS (graft polystyrene monomer and starch glucose unit molar ratio) of about 0.05, the particle diameter of 50-500nm. By co-precipitation techniques, the obtained amphiphilic starch derivatives and natural rubber latex, styrene-butadiene latex prepared by blending rubber micro heterophasic composition, and further mixed with natural rubber, reinforcing agent, vulcanizing agent in an open roll machine kneading after vulcanization, to obtain a test sample. To study the mechanical properties and dynamic viscoelasticity, analysis of the wet skid resistance of composite materials, the relationship between low rolling resistance with amphiphilic starch nanocrystals, and antistatic properties. Experimental results show that, in the carbon black system, adding 5% to 10% of polystyrene grafted starch Nanocrystals, better wet skid resistance and low rolling resistance can be obtained; in the carbon black and silica 50% of each of the system, add 15% of the sample has a good wet skid resistance and low rolling resistance. In the system of 50% each of the carbon black and silica, adding 15% of the fine particles of the polystyrene-grafted starch sample has a good wet skid resistance and low rolling resistance. Adding 5% to 10% of benzyl starch Nanocrystals silica system, the rolling resistance of the sample is reduced significantly, but the wet skid resistance reduced, is not conducive to the safety of the tire. In addition, dispersed in the styrene-butadiene latex, a polystyrene grafted starch nanocrystalline carbon black system, and the obtained rubber samples wet skid resistance was increased significantly, but the rolling resistance is increased. Amphiphilic starch derivatives can improve the antistatic ability of the rubber material, wherein the polystyrene-grafted starch nanocrystalline added 10% in 50% of the system in each of the carbon black and white carbon, can make the rubber material having antistatic properties, no static savings, but added with 5% carbon black system can be further improved antistatic properties. The study is to promote the research and development of novel composite material containing natural polymer, as well as theoretical basis for the development of the green tire material accumulation.
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