摘要
以导电高分子材料制备的柔性应变传感器可应用于可穿戴设备领域中,实际应用中需要其在不同外界条件下表现出良好的稳定性与可重复性。研究了炭黑含量、拉伸速率、拉伸率等因素对炭黑/液体硅橡胶导电高分子复合材料拉伸响应行为的影响。结果表明,随着炭黑含量增加,复合材料表现出逾渗现象并符合逾渗理论,其逾渗阈值(质量百分比)在3%。在不同拉伸速率条件下,均表现出良好的迟滞性(在50、250、500 mm/min拉伸速率下迟滞性系数分别为8.1%、8.47%、8.82%)。在不同拉伸率与拉伸速率条件的拉伸释放试验均表现出良好的稳定性(ΔR/R0最大相对标准偏差分别为1.42%、1.86%)。
Flexible strain sensors made of conductive polymer materials can be applied to the field of wearable devices.In practical applications,they need to exhibit good stability and repeatability under different external conditions.The effects of carbon black content,tensile speed and elongation rate on the tensile response behavior of carbon black/liquid silicone rubber conductive polymer composites were investigated.The results show that with the increase of carbon black content,the composite exhibits percolation and conforms to the percolation theory,and its percolation threshold is 3%.It shows good hysteresis at different tensile speed conditions(the hysteresis coefficients at 50 mm/min,250 mm/min,and 500 mm/min tensile speeds are 8.1%,8.47%,8.82%).Excellent stability are observed in tensile elongation test under different elongation and tensile rate conditions(the maximum relative standard deviation of ΔR/R0 are 1.42% and 1.86%).
作者
龚瑾
龚云琪
梅顺齐
GONG Jin;GONG Yun qi;MEI Shun qi(College of Mechanical Engineering and Automation,Wuhan Textile University,Wuhan 430200,China;Hubei Digital Textile Equipment Key Laboratory,Wuhan 430200,China)
出处
《仪表技术与传感器》
CSCD
北大核心
2020年第4期15-19,共5页
Instrument Technique and Sensor
基金
国家自然科学基金面上项目(51175385)。
关键词
柔性复合材料
炭黑
迟滞性
导电性能
flexible composites
carbon
hysteresisproperties
electrical properties
