以竹炭为导电填料，通过改变竹炭、气相法白炭黑、羟基硅油、过氧化二异丙苯(DCP)的添加量，以正交试验设计法对竹炭/硅橡胶复合材料的导电性能和力学性能进行了研 究。分析了竹炭的体积电阻率、粒径以及竹炭的添加量对竹炭/硅橡胶复合材料导电和力学性能的影响。结果表明：当甲基乙烯基硅橡胶(MVQ)、竹炭(粒径小于25 μm,体积电阻率 为0.11 Ω·cm)、气相法白炭黑、DCP、羟基硅油质量比为100∶130∶3∶3∶2时，制备的复合材料的电阻率为0.63 Ω·cm，拉伸强度为118 MPa，伸长率为132 %，达到了竹炭/ 硅橡胶高导电复合材料的体积电阻率要求。
Abstract
The conductivities and mechanical properties of bamboo charcoal/silicone rubber composites were studied with orthogonal tests by using bamboo charcoal as the conductive filler and changing the addition amounts of bamboo charcoal, fumed silica, hydroxyl silicone oil, and dicumyl peroxide, respectively. Effects of the volume resistivity, particle size and the amount of bamboo charcoal on the conductive and mechanical properties of bamboo charcoal/silicone rubber composites were investigated based on orthogonal experimental results, and the optimum conditions were obtained as follows: methyl vinyl silicone rubber 100(mass), bamboo charcoal(particle size is less than 25 μm and volume resistivity is 0.11 Ω·cm)130, fumed silica 3, dicumyl peroxide 3, hydroxy silicone oil 2. The volume resistivity, tensile strength, and elongation of bamboo charcoal/silicone rubber composites prepared at the aforesaid conditions reached about 0.63 Ω·cm, 1.18 MPa and 132 %, respectively, and met the requirement of high conductive composites.
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参考文献
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基金
收稿日期：2009-12-28修回日期：2010-06-29基金项目：“十一五”国家科技支撑计划(2006BAD19B06)作者简介：邓丛静(1982—)，博士生。*周建斌(通信作者),教授。Email: zhoujianbin@njfu.com.cn。引文格式：邓丛静,周建斌,王双,等.
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