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采用机械共混法分别制备了BSBBR(星形支化溴化丁基橡胶)/OMMT(有机蒙脱土)纳米复合材料、BIIR(溴化丁基橡胶)/OMMT纳米复合材料,并着重探讨了OMMT掺量对两者结构和性能的影响。研究结果表明:BSBBR、BIIR中的部分橡胶大分子链可插入至OMMT的片层结构中,并且OMMT可良好分散在BSBBR、BIIR基体中;当w(OMMT)=10%(相对于纳米复合材料质量而言)时,BSBBR/OMMT纳米复合材料的拉伸强度相对最优,并且比纯BSBBR提高了73%,而且是BIIR/OMMT纳米复合材料的1.35倍;与BIIR/OMMT纳米复合材料相比,BSBBR/OMMT纳米复合材料具有更优异的耐热性和气体阻隔性。
BSBBR (star-branched brominated butyl rubber) / OMMT (organic montmorillonite) nanocomposites, BIIR (brominated butyl rubber) / OMMT nanocomposites were prepared by mechanical blending method. Effect of OMMT content on the structure and properties of both. The results show that some of the rubbery macromolecular chains in BSBBR and BIIR can be inserted into the OMMT lamellar structure, and OMMT can be well dispersed in BSBBR and BIIR matrix. When OMMT = 10% (relative to nanocomposites The tensile strength of BSBBR / OMMT nanocomposites is relatively optimal and is 73% more than that of pure BSBBR and 1.35 times that of BIIR / OMMT nanocomposites; compared to BIIR / OMMT nanocomposites , BSBBR / OMMT nanocomposites have more excellent heat resistance and gas barrier properties.