基于膨胀石墨/聚二甲基硅氧烷复合材料的柔性压力传感器及加热除冰的应用  

Flexible piezoresistive sensor and heating de-icing performance based on expanded graphite/polydimethylsiloxane composite

作　　者：秦文峰[1] 王新远 李亚云 艾璇 符佳伟 QIN Wenfeng;WANG Xinyuan;LI Yayun;AI Xuan;FU Jiawei(Aviation Engineering Institute,Civil Aviation Flight University of China,Guanghan 618307,China)

机构地区：[1]中国民用航空飞行学院航空工程学院,广汉618307

出　　处：《复合材料学报》2021年第2期461-469,共9页Acta Materiae Compositae Sinica

基　　金：民航局教育人才类项目(14002600100017J170);四川省2019年大学生创新创业训练计划项目(S201910624004);中国民用航空飞行学院研究生创新基金(X2020-7)。

摘　　要：积冰作为一种常见的自然现象,给航空、电力和道路交通等方面带来了极大安全隐患。本文利用膨胀石墨优异的导电性和聚二甲基硅氧烷良好的柔韧性与疏水性,制备具有探冰与电热除冰功能为一体的膨胀石墨/聚二甲基硅氧烷的复合材料(Expandable graphite/polydimethylsiloxane, EG/PDMS),并研究其疏水性、压阻性能和电热效应。结果表明,EG/PDMS复合材料传感器压力灵敏度最大为0.15 kPa^(-1),且能在10~110 kPa大范围内产生线性压阻反应;在电加热过程中,当输入电压为30 V、输入电流为0.05 A时,最高平衡温度为94.7℃,完全融化10 g冰的时间为166 s。EG/PDMS复合材料不仅可以监测其表面积冰厚度变化,还可通电加热除冰,在探冰/除冰领域具有较大的应用价值。As a common natural phenomenon, ice accretion poses great security risks to aviation, power and road traffic. In this paper, an excellent composite of expanded graphite/polydimethylsiloxane(EG/PDMS) based ice detection and electrothermal de-icing function was designed by using the excellent conductivity of expanded graphite and the good flexibility and hydrophobicity of polydimethylsiloxane. Through experiments, the hydrophobicity,piezoresistive performance and electrothermal effect of the EG/PDMS composite material were analyzed. The sensor pressure sensitivity is up to 0.15 kPa^(-1), and the linear piezoresistive reaction can be generated in the range of10~110 kPa;during the electric heating process when the input voltage is 30 V and the input current is 0.05 A, the maximum equilibrium temperature is 94.7℃, and the time to completely melt 10 g of ice is 166 s. The EG/PDMS composite material has great potential application value in the field of ice exploration/deicing. The composite material has great potential application value in the field of deicing.

关 键 词：膨胀石墨 聚二甲基硅氧烷 柔性压阻传感器 除冰 电流热效应 

分 类 号：TB332[一般工业技术—材料科学与工程] TP212[自动化与计算机技术—检测技术与自动化装置]