摘要
导电塑料自发现以来在敏感材料领域得到了广泛应用,尤其是在高精度角位移传感器中的应用越来越多。目前,主要采用喷涂法生产该类传感器的电阻膜,喷涂时电阻液的浓度、压力、时间、烘干的温度和时间与电阻膜的阻值大小、耐磨性（牢度）及线性度等性能有密切关系。试验研究表明：对于碳黑填料型导电塑料,在电阻液含碳黑15%时喷涂压力取0.5~0.6 MPa、时间为6~8 s得到的电阻膜阻值线性度最佳,而烘干温度取175℃、烘干用时4 min能获得最佳耐磨性;对于金属填料型导电塑料,电阻液含金属填料6%时喷涂压力取0.7~0.8 MPa、时间为5~6 s得到的电阻膜阻值线性度最佳,而烘干温度取165℃、烘干用时5 min能获得最佳耐磨性。这一研究成果对提高导电塑料角位移传感器的性能,降低生产成本具有一定的指导意义。
This paper draws a conclusion from experiments that for the carbon black stuffing conductive plastic,the worst linearity will be gotten under the pressure condition of 0.5 to 0.6 MPa in 6 to 8 s with 15% carbon black in the liquid resistance and the best abrasion resistance under the drying temperature of 175 ℃ in 4 minutes.And for the metal stuffing conductive plastics,the worst linearity will be gotten under the pressure condition of 0.7 to 0.8 MPa in 5 to 6 s with 6% metal stuffing in the liquid resistance and the best abrasion resistance under the drying temperature of 165℃ in 4 minutes. It is meaningful in improving the performance of the angular displacement sensor of conductive plastic and reducing the production costs.
出处
《仪表技术与传感器》
CSCD
北大核心
2009年第7期14-16,29,共4页
Instrument Technique and Sensor
基金
2008年湖州市科技计划攻关项目(2008GG12)
关键词
导电塑料
角位移传感器
喷涂工艺
电阻膜
喷涂法
电阻液
conductive plastic
angular displacement sensor
spraying
resistance film
liquid resistance
