顺丁橡胶/有机蒙脱土纳米复合材料的介电性能研究  

Study on Dielectric Characteristics of Butadiene Rubber/Organomontmorillonite Nanocomposites

作　　者：高利[1] 宋国君[1] 彭智[2] 李培耀[1] 王璐璐[2] 梁晓艳[2] 

机构地区：[1]青岛大学高分子材料研究所,青岛266071 [2]青岛大学化学化工与环境学院,青岛266071

出　　处：《特种橡胶制品》2010年第3期11-15,共5页Special Purpose Rubber Products

摘　　要：采用机械混炼法制备了顺丁橡胶/有机蒙脱土(BR/OMMT)纳米复合材料;采用精密电桥对纳米复合材料的介电性能进行了研究。结果表明,纳米复合材料的相对介电系数(ε)随温度的升高逐渐增加,而介电损耗(tanδ)随温度的升高分别出现β峰和α峰。当晶区完全融化后,ε及tanδ随温度的升高而急剧上升;在频率一定时,纳米复合材料的介电损耗随OMMT含量的增加逐渐增加,并且峰值向高温方向移动;在OMMT含量一定时,在相同温度下,复合材料的ε和tanδ均随着频率的升高而下降;随着频率的升高,介电损耗峰向高温方向移动。The butadiene rubber/organomontmorillonite（BR/OMMT） nano-composites were prepared by using the mechanical blending,and the dielectric properties of the nano-composites were studied by using the precise electric bridge.The results showed that the relative dielectric constant（ε） of the nano-composites increased gradually with the increase of temperature,and the dielectric loss（tanδ） appeared β peak and α peak in order.The ε and tanδ increased monotonously with the increase of temperature after the crystal region melted completely.When the frequency was constant,the tanδ of BR/OMMT nanocomposites increased gradually with the increase of OMMT content,and the peak migrated to high temperature;When the OMMT content was constant,the ε and tanδ of the nanocomposites decreased with the increase of the frequency at the same temperature.The dielectric loss peak migrated to high temperature with the increase of frequency.

关 键 词：顺丁橡胶 有机蒙脱土 介电性能 介电系数 介电损耗 

分 类 号：TQ330.6[化学工程—橡胶工业]