State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing. 100029, China.
Sci Rep. 2013;3:2508. doi: 10.1038/srep02508.
In this paper, graphene oxide/styrene-butadiene rubber (GO/SBR) composites with complete exfoliation of GO sheets were prepared by aqueous-phase mixing of GO colloid with SBR latex and a small loading of butadiene-styrene-vinyl-pyridine rubber (VPR) latex, followed by their co-coagulation. During co-coagulation, VPR not only plays a key role in the prevention of aggregation of GO sheets but also acts as an interface-bridge between GO and SBR. The results demonstrated that the mechanical properties of the GO/SBR composite with 2.0 vol.% GO is comparable with those of the SBR composite reinforced with 13.1 vol.% of carbon black (CB), with a low mass density and a good gas barrier ability to boot. The present work also showed that GO-silica/SBR composite exhibited outstanding wear resistance and low-rolling resistance which make GO-silica/SBR very competitive for the green tire application, opening up enormous opportunities to prepare high performance rubber composites for future engineering applications.
本文通过将氧化石墨烯（GO）胶体与苯乙烯-丁二烯橡胶（SBR）胶乳以及少量丁苯-苯乙烯-乙烯-吡啶橡胶（VPR）胶乳进行水相混合，再进行共凝聚，制备出完全剥离 GO 片层的氧化石墨烯/苯乙烯-丁二烯橡胶（GO/SBR）复合材料。在共凝聚过程中，VPR 不仅起到了防止 GO 片层聚集的关键作用，还充当了 GO 和 SBR 之间的界面桥。结果表明，含有 2.0 体积%GO 的 GO/SBR 复合材料的力学性能可与填充 13.1 体积%炭黑（CB）的 SBR 复合材料相媲美，同时具有较低的质量密度和良好的气体阻隔能力。本工作还表明，GO-二氧化硅/SBR 复合材料表现出优异的耐磨性和低滚动阻力，这使得 GO-二氧化硅/SBR 在绿色轮胎应用方面极具竞争力，为未来工程应用中制备高性能橡胶复合材料开辟了巨大的机会。
