可分散性纳米二氧化硅补强硅橡胶的性能  

Study on Properties of Silicon Rubber Enforced by DNS-Silica Nanoparticales

作　　者：郑秋红[1] 刘丰[1] 李小红[1] 丁涛[2] 吴志申[1] 

机构地区：[1]河南大学特种功能材料重点实验室,河南开封475001 [2]北京化工大学北京市新型高分子材料制备与成型加工重点实验室,北京100029

出　　处：《高分子材料科学与工程》2007年第3期139-142,共4页Polymer Materials Science & Engineering

基　　金：国家技术研究发展计划(863)资助项目(2002AA302607)

摘　　要：以表面改性的可分散性(DNS)系列二氧化硅纳米微粒为研究对象,考察了其对硅橡胶力学性能的影响,Payne效应分析了其在硅橡胶中形成网络结构,并与气相白炭黑填充硅橡胶体系做了对比。结果表明,由于SiO2纳米微粒表面包覆有有机基团,无需加入分散剂,DNS系列纳米二氧化硅在硅橡胶中分散性好,与硅橡胶相容性好,对硅橡胶有较强的补强效果,在相同添加量的情况下,DNS系列二氧化硅纳米微粒补强的硅橡胶的拉伸强度、撕裂强度、扯断伸长率等力学性能都优于气相白炭黑。A series of dispersible silica nanoparticles （DNS） with surface-modification were chosen as investigation. The mechanical properties that filled for silicon rubber were investigated. By Payne effect, the network structure in silicon rubber were analysized. That all were compared with that of silicon rubber filled by fumed silica. The experimental results show that the DNS-silica nanoparticals have dispersion and compatibility with silicon rubber without dispersant ouling to the surface of these nanoparticles are enwrapped by apolar methyl. The mechanical properties such as tensile strength,tear strength and elongation at break are all better than fumed silica under the same dosage. DNS- SiO2nanoparticals have a better reinforcing function to the silicon rubber.

关 键 词：纳米二氧化硅 硅橡胶 补强 力学性能 

分 类 号：TQ330.38[化学工程—橡胶工业]