SBS/蒙脱土纳米复合材料耐热性能研究  

Study on the thermal stability poly(styrene-b-butadiene) copolymer/montmorillonite nanocomposites

作　　者：廖明义[1] 朱结东[1] 

机构地区：[1]大连海事大学机电与材料学院,辽宁大连116026

出　　处：《弹性体》2008年第1期1-3,共3页China Elastomerics

基　　金：辽宁省教育厅重点项目(2005199)

摘　　要：采用溶液混合方法制备了苯乙烯/丁二烯三元嵌段共聚物(SBS)/有机蒙脱土(OMMT)纳米复合材料(NC),对SBS/OMMT NC的热学性能进行了研究。结果表明,添加OMMT对于所有复合体系均提高了耐热性能,其中以SBS4402/OMMT-DK1B体系最为明显,热失重中心温度Tdc提高幅度达27℃;当OMMT用量为2.5质量份时,NC的Tdc最高,表明耐热性能最好,超过2.5质量份后,耐热性能下降;星型结构SBS耐热性能的提高明显高于线型SBS。Star-shaped and linear block thermoplastic poly（styrene-b-butadiene） copolymer （SBS）/organophilic montmorillonite （OMMT） nanocomposites（NC） were prepared by a solution approach. The thermal stability of these nanocomposites were investigated. The results from thermogravimetric analysis （TGA） showed that the addition of OMMT increased the thermal stability for all nanocomposites, in particular, the value of Tdc of SBS4402/OMMT-DK1B nanocomposites significantly increased by 27℃ compared with SBS. The Tdc value of NC is the highest at OMMT content of only 2.5phr, indicating the best thermal stability, the thermal stability decreased at OMMT content over 2.5phr. The thermal stability of SBS with star-shaped structure obviously excelled SBS with linear structure.

关 键 词：SBS OMMT 纳米复合材料 溶液混合 热学性能 

分 类 号：TQ334.3[化学工程—橡胶工业]