流体作用下导电硅橡胶的压阻特性及弛豫特性  

Piezoresistive and Relaxation Properties of Conductive Silicone Rubber Under the Pressure of Fluids

作　　者：王鹏宇[1] 李斌[1] 全旺贤 

机构地区：[1]昆明理工大学化学工程学院,云南昆明650500

出　　处：《高分子材料科学与工程》2015年第10期62-68,共7页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(51167008)

摘　　要：实验制备了不同导电硅橡胶试样,搭建了用于测试流体作用下导电硅橡胶压阻特性的试验平台并设计了测试方法,分别研究了在一定范围内液体静压下导电硅橡胶的体压阻特性、表面压阻特性、弛豫特性及在气压作用下的表面压阻特性。研究表明,在液体静压下,6%乙炔炭黑/2%纳米SiO2并用的试样所表现出的压阻性能最优,而纳米改性材料的添加与材料厚度的增大可以缩短导电硅橡胶的电阻弛豫时间;添加改性材料后,导电硅橡胶在气压作用下的压阻特性曲线明显优于单独添加乙炔炭黑的情况,而且随着材料厚度的增加其压阻特性有较好的提升。The conductive silicon rubber samples were prepared in different filler ingredients;the testing experimental platforms were built and the testing methods were also designed.The body piezoresistive properties,surface piezoresistive properties,relaxation properties of the materials under hydrostatic pressure and the surface properties of the material under air pressure were studied respectively.The results show that under the hydrostatic pressure,the samples of 6% acetylene black/2% nano-SiO2 blends exhibit the best piezoresistive performance;with the addition of nano-modified materials and the increasement of the materials thickness,the relaxation time of the conductive silicone rubber can be reduced.After adding the modified materials,the piezoresistive curves are superior to the case of adding acetylene black alone under air pressure;and with the increasement of the samples thickness,the piezoresistive properties of the material will have a good upgrade.

关 键 词：导电硅橡胶 流体作用 纳米改性材料 压阻特性 弛豫特性 

分 类 号：TQ333.93[化学工程—橡胶工业]