纳米氧化锌/EPDM复合材料的性能研究

试验研究纳米氧化锌/EPDM复合材料的物理性能和导热性能，并与炭黑和白炭黑补强的EPDM胶料进行对比。结果表明，纳米氧化锌的导热性能明显优于炭黑和白炭黑等传统补强填料，其对EPDM具有较好的补强作用，纳米氧化锌/EPDM复合材料的生热较低；采用偶联剂Si69对纳米氧化锌进行原位改性可以改善纳米氧化锌粒子与EPDM间的界面作用，提高其分散性，从而显著提高复合材料的物理性能，降低生热；改性纳米氧化锌/EPDM复合材料的物理性能和导热性能良好，可用于动态工况下使用的橡胶制品。;The physical properties and thermal conductivity of nano-zinc oxide/EPDM composite were experimentally investigated，and compared with those of carbon black or silica reinforced EPDM.The results showed that the thermal conductivity of nano-zinc oxide was better than that of the traditional reinforcing fillers such as carbon black，silica etc.，the nano-zinc oxide provided EPDM compound with good reinforcement，and the heat build-up of nano-zinc oxide/EPDM composite was lower；the interfacial action between nano-zinc oxide and EPDM was strengthened，the dispersion of nano-zinc oxide，the physical properties and the heat build-up of the nano-zinc oxide/EPDM composite were improved significantly by in-situ modification with coupling agent Si69；the modified composite possessed good physical properties and thermal conductivity，and it could be used in rubber products which worked in the dynamic situation