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应用羧基丁苯橡胶乳液辐射硫化、亲水性纳米白炭黑(SiO2)浆体制备、喷雾干燥等工业技术制备了纳米级超细全硫化粉末羧基丁苯橡胶(UFPCSBR)/SiO2纳米复合粉末,其中,纳米级SiO2颗粒与UFPCSBR颗粒处于相互隔离依附的状态.在UFPCSBR/SiO2纳米复合粉末与SBR等生胶的混炼过程中,借助于UFPCSBR颗粒在SBR生胶基体中的良好分散,依附在UFPCSBR颗粒上的SiO2颗粒也能够良好分散在橡胶基体中,从而制备成橡胶/UFPCSBR/SiO2纳米复合材料.实验结果表明,由UFPCSBR/SiO2纳米复合粉末制备的橡胶/UFPCSBR/SiO2纳米复合材料具有较好的耐磨性、撕裂强度和较低的压缩生热.值得注意的是,在0～40°C范围内,这种新颖的橡胶/UFPCSBR/SiO2复合材料的tanδ-T曲线上新出现了一个侧峰,有效提高了0～20°C范围内的tanδ值,但60°C附近的tanδ值变化较小,从而表现为在橡胶复合材料的滚动阻力变化不大的情况下,其抗湿滑性明显提高,这将为绿色轮胎胎面胶纳米复合材料的设计开发提供新的研究思路.
Nano-scale ultrafine fully vulcanized carboxylated styrene-butadiene rubber (UFPCSBR) / SiO2 nanocomposite powders were prepared by industrial irradiation with radiation curing of carboxylated styrene-butadiene rubber latex, preparation of hydrophilic nanosilica (SiO2) slurry and spray drying. Among them, the nano-SiO2 particles and UFPCSBR particles are in a state of mutual isolation attached to each other.In UFPCSBR / SiO2 nanocomposite powder and SBR and other raw rubber mixing process, by virtue of UFPCSBR particles in the SBR raw rubber matrix decentralized, attached UFPCSBR particles of SiO2 particles can also be well dispersed in the rubber matrix, which prepared rubber / UFPCSBR / SiO2 nanocomposites.The experimental results show that the UFPCSBR / SiO2 nano-composite powder prepared rubber / UFPCSBR / SiO2 nanocomposites have more Good abrasion resistance, tear strength and low compression heat generation It is noteworthy that the tanδ-T curve of this novel rubber / UFPCSBR / SiO2 composite appears in the range of 0-40 ° C A side peak effectively increases the value of tan δ in the range of 0 to 20 ° C, but the value of tan δ changes little at around 60 ° C, which shows that when the rolling resistance of the rubber composite does not change much, its resistance Slip significantly improved, which will be green tire tread rubber nanocomposites design and development of new research ideas.