文章摘要
介孔二氧化硅/氧化石墨烯并用对天然橡胶性能的影响
Properties of Natural Rubber Filled with Graphene Oxide and Mesoporous Silica
  
DOI:10.16865/j.cnki.1000-7555.2018.08.020
中文关键词: 介孔二氧化硅  氧化石墨烯  天然橡胶  静电自组装  纳米复合材料
英文关键词: mesoporous silica  graphene oxide  natural rubber  electrostatic assembly  nanocomposite
基金项目:聚合物石墨烯复合材料制备技术合作研究(2015DFA51110)
作者单位
张开业, 王 健, 费国霞, 夏和生 高分子材料工程国家重点实验室(四川大学) 四川大学高分子研究所四川 成都 610065 
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中文摘要:
      胶乳法是制备石墨烯及其衍生物橡胶纳米复合材料最常用的方法,文中在胶乳法的基础上,将静电自主装的技术运用于石墨烯基/橡胶纳米复合材料领域,即,将正电荷的十六烷基三甲基溴化铵修饰的介孔二氧化硅纳米粒子(MCM-NH4H)、表面带负电荷的氧化石墨烯、表面带负电荷的橡胶乳胶粒共混,使三者在水溶液中发生静电自组装制备了一种新型三元复合纳米材料。通过红外光谱、X射线衍射、扫描电镜等测试手段对制备的材料进行了结构表征,系统地研究了氧化石墨烯(GO)和MCM-NH4H对复合材料性能的影响。结果表明,MCM-NH4F和GO之间的协同作用极大地提高了复合材料的性能,当GO的用量为0.75 phr时,复合材料的拉伸强度达到29.4 MPa, 提高了32.6%,介电性能具有一定程度的提升。
英文摘要:
      The latex mixing is the most commonly used method for preparation of graphene and graphene derivatives/rubber nanocomposites. In this paper, on the basis of latex mixing method, the technology of electrostatic self-assembly was applied to preparation of graphene based/rubber nanocomposites. The positively charged cetyltrimethylammonium bromide modified mesoporous silica(MCM-NH4H), the negatively charged graphene oxide, and the negatively charged rubber latex particles were blended in an aqueous solution, and a new type of nanocomposite was formed by electrostatic self-assembly. The structures of the prepared nanocomposites were characterized by IR, XRD and SEM. The effects of GO and MCM-NH4H on the properties of the nanocomposites were systematically studied. The results show that the synergy between MCM-NH4F and GO greatly improves the performances of the nanocomposites. When the content of GO is 0.75 phr, the tensile strength of the composite reaches 29.4 MPa, which is 32.6% higher than that of the material without GO. In addition, the dielectric properties of the material are also improved.
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