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.
出处
《特种橡胶制品》
2010年第3期11-15,共5页
Special Purpose Rubber Products
关键词
顺丁橡胶
有机蒙脱土
介电性能
介电系数
介电损耗
butadiene rubber
organomontmorillonite
dielectric properties
dielectric constant
dielectric loss
