原位聚合纳米PZDMA补强POE材料的研究

利用显微镜观察和热分析方法研究了原位聚合纳米聚甲基丙烯酸锌（PZDMA）补强乙烯-α辛烯共聚物（POE）材料（简称PZDMA补强材料）的纳米分散相结构的生成历程和补强机理，探讨了PZDMA补强材料的应力-应变特性及拉伸强度与温度的关系。结果表明，PZDMA补强材料的纳米分散相（聚甲基丙烯酸锌）是硫化过程中ZDMA发生原位聚合反应生成的；PZDMA补强材料强度高的主要原因是纳米PZDMA分散相与POE分子间的物理吸附松弛特性比化学吸附松弛特性好；PZDMA补强材料的应力-应变特性与炭黑补强POE胶料有明显差异，PZDMA补强材料的常温拉伸强度显著高于、高温拉伸强度低于炭黑补强POE胶料。;The development process and reinforcing mechanism of the nano-dispersion phase structure in the in-situ polymerized nano-PZDMA/POE were investig ated by micro-scopy and thermogravimetric analysis and the dependence of the stress-strain behavior and tensile streng th of PZDMA/POE composite on the temperature was also studied.The results showed that the nano-dispersion phase（PZDMA）was formed by the in-situ polymerization of ZDMA during vulcanization；the higher streng th of PZDMA/POE composite was mainly contributed by the physical adsorption relaxation between nano-PZDMA dispersion phase and POE molecule rather than their chemical adsorption relaxation；and the stress-strain curve of PZDMA/POE composite was quite different from that of carbon black/POE compound，i.e.the PZDMA/POE composite gave the much higher tensile strength at the room temperature in contrast to the lower tensile streng th at the elevated temperature when compared to carbon black/POE compound