%0 Journal Article
%T 碳粉/二氧化硅对碳纤维增强复合材料？の伦栊вτ跋？<br>Influence of Carbon Powder/Silica on Thermo-resistive Effect of Carbon Fiber Reinforced Polymer
%A 刘荣桂
%A 平
%A 舒
%A 谢桂华
%A 刘
%A 聃
%A 席宜超
%J 建筑科学与工程学报
%D 2017
%X 分别对有无掺入碳粉和二氧化硅混合颗粒的碳纤维增强复合材料（CFRP）传感元件进行了室温至高温（100 ℃）时的温阻效应研究。结果表明：一次升温过程中2种CFRP传感元件为正温度系数（PTC）效应，温度差值与电阻的常用对数值线性关系较好，在基体中添加一定量碳粉和二氧化硅的混合填料可以改善传感元件的温度敏感特性；第1次温度循环结束后CFRP传感元件内部产生不会随时间消失的滞留电阻；重复温度过程中，相对于无添加型CFRP传感元件，掺入碳粉和二氧化硅混合物使传感元件PTC强度较高，规律性和重复性较好，温度差值在0～20 ℃时传感元件表现为负温度系数（NTC）效应，20～80 ℃时为PTC效应。<br>The thermo-resistive effect of CFRP sensor elements with mixed carbon powder and silica at room temperature to high temperature (100 ℃) was studied. The results show that the two CFRP sensor elements have positive temperature coefficient (PTC) effect when heating, and have good liner relationship between temperature difference (ΔT) and the common logarithm of resistance. Adding carbon powder and silica can improve the temperature sensitive characteristics of the sensor element. After the first temperature cycle, the CFRP sensor element generates a retention resistance which does not disappear with time. In the process of repeating the temperature, with respect to the CFRP sensor elements without any mixture, the CFRP sensor element added carbon powder and silica has higher PTC strength and better regularity and repeatability, and it shows negative temperature coefficient (NTC) effect when ΔT at 0-20 ℃, PTC effect at 20-80 ℃
%K 碳纤维增强复合材料
%K 温阻效应
%K PTC强度
%K 碳粉
%K 二氧化硅
%K 传感元件&lt
%K br&gt
%K CFRP
%K thermo？？resistive effect
%K PTC intensity
%K carbon powder
%K silica
%K sensor element
%U http://jace.chd.edu.cn/oa/DArticle.aspx?type=view&id=20170605