硅酸盐通报2016，Vol.35Issue(9)：2733-2740,8.
多壁碳纳米管水泥基复合材料的压敏性能研究
Stress-sensing Performance of MWCNTs Cement Composites
摘要
Abstract
Polycarboxylate superplasticizer was used to disperse multi-walled carbon nanotubes ( MWCNTs) and four electrode method was used to study the influence of MWCNTs on the electrical resistivity and stress-sensing properties of multi-walled carbon nanotube-based cement composites (MWNTs/CC).The effect of several variables on the stress-sensing function was studied, e.g. MWCNTs content , maximum stress applied and loading rate .The results show that with the increase of the dosage of MWCNTs , the electrical resistivity of composites decreases gradually , and the polarization time reduces gradually .When the dosage of MWCNTs between 0.06wt% to 0.3wt%, the MWNT/CC exhibit excellent stress-sensing property and the optimum dosage of MWCNTs is 0.1wt%.When the samples were progressively loaded until failure , the maximum fractional change of electrical resistance is up to 70%.With the increase of maximum loading stress and loading rate , the ratio of electrical resistivity change increases gradually .关键词
多壁碳纳米管/水泥基复合材料/电阻/压敏性Key words
multi-walled carbon nanotube/cement composite/electrical resistivity/stress-sensing分类
建筑与水利引用本文复制引用
王琴,王健,刘伯伟,吕春祥,董贻晨..多壁碳纳米管水泥基复合材料的压敏性能研究[J].硅酸盐通报,2016,35(9):2733-2740,8.基金项目
国家自然科学基金（51508020）；北京市教育委员会科技计划面上项目（KM201510016003）；北京高校创新团队建设与教师职业发展计划项目 （）
