摘要
通过超临界CO_2发泡制备了MMT-SiO_2/MVQ复合泡沫材料。研究了MMT对硅橡胶复合体系流变性能,以及成核机理的影响,并且系统的研究了发泡工艺对泡孔形貌的影响。结果表明,MMT对硅橡胶基体补强作用较弱,在基体中与白炭黑均作为异相成核剂,发生异相成核,从而获得具有双峰泡孔结构的硅橡胶泡沫。此外,通过优化工艺参数可以获得更好的微孔硅橡胶泡沫。
MMT-SiO 2/MVQ composite foams were prepared by supercritical CO 2 foaming.The effects of MMT on the rheological properties of silicone rubber compound system and the nucleation mechanism were investigated,and the influence of foaming process on the cell morphology of silicone rubber foams was studied systematically.The results show that MMT has a weak reinforcing effect on the silicone rubber matrix.In the matrix,MMT and silica are both used as heterogeneous nucleating agents and heterogeneous nucleation occurs.Thus,silicone rubber foams with a bimodal cell structure is obtained.In addition,better microporous silicone rubber foams can be obtained by optimizing process parameters.
作者
向斌
贾亚兰
刘涛
罗世凯
XIANG Bin;JIA Yalan;LIU Tao;LUO Shikai(Institute of Chemical Materials,China Academy of Engineering Physica,Mianyang 621900,China;College of Materials and Chemistry&Chemical Engineering, Chengdu University of technology,Chengdu 610059,China)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2018年第9期9195-9201,9206,共8页
Journal of Functional Materials
基金
国家自然科学基金资助项目(51773186
51503189)
关键词
双峰泡孔结构
超临界CO2
流变性能
异相成核
泡孔形貌
bi-modal cell structure
supercritical CO 2
rheological properties
heterogeneous nucleation
cell morphology
