关键词: 高性能, 丁基橡胶, 黏土

Abstract: Isobutylene-isoprene rubber(IIR)/clay nanocomposite was synthesized by shearing mixing of pre-swollen orgnomontmorillonite (S-OC)with IIR.The experimental results demonstrated that the properties of the as-prepared nanocomposite (IIR/S-OCNs)were superior to those of nanocomposite prepared with the traditional melt intercalation method (IIR/OCNs).When the loading of clay was 10 phr, tensile strength and tear strength were about 4.96 and 0.22 times higher than those of pure IIR. When the loading of clay was 5 phr, gas permeability of the IIR/S-OCNs was reduced markedly by 21.88% and 12.50% compared to pure IIR and IIR/OCNs.The novel strategy united the advantages of melt method and solution method together.The IIR/clay prepared by the novel method could be applied in rubber products, which required high gas barrier property, such as tire inner tube, inner liner and applied in other elastomer materials.

Key words: high performance;isobutylene-isoprene rubber, clay