摘要
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。
The BSBBR (star- branched brominated butyl rubber)/OMMT (organic montmorillonite) nano- composite and BIIR (brominated butyl rubber)/OMMT nano-composite were prepared by mechanical blending, and the influences of OMMT contents on both structure and properties were emphatically discussed. The research results showed that the part rubber maeromolecule chain in BSBBR or BIIR could be inserted to the layer structure of OMMT, and the OMMT could be well dispersed in the BSBBR or BIIR matrixes. The BSBBR/OMMT nano- composite had the relatively optimal tensile strength, which was 73% more than that of pure BSBBR, and it was 1.35 times of BIIR/OMMT nano-eomposite when mass fraction of OMMT was 10% in nano-composite. Compared with BIIR/OMMT nano-composite, the BSBBR/OMMT nano-composite had the more excellent heat resistance and gas barrier property.
出处
《中国胶粘剂》
CAS
北大核心
2017年第3期11-15,共5页
China Adhesives
基金
国家自然科学基金资助项目(51273142)
关键词
星形支化溴化丁基橡胶
有机蒙脱土
纳米复合材料
力学性能
耐热性
气体阻隔性
star-branched brominated butyl rubber (BSBBR)
organic rnontmorillonite (OMMT)
nano- composite
mechanical property
heat resistance
gas barrier property