A model for the relative environmental stability of a series of polyimide capacitance humidity sensors

被引：42

作者：

Ralston, ARK

Klein, CF

Thoma, PE

Denton, DD

机构：

[1] UNIV WISCONSIN,MAT SCI PROGRAM,MADISON,WI 53706

[2] UNIV WISCONSIN,DEPT ELECT & COMP ENGN,MADISON,WI 53706

[3] JOHNSON CONTROLS INC,CENT RES,MILWAUKEE,WI 53201

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1996年 / 34卷 / 1-3期

关键词：

environmental stability; polyimide; capacitance humidity sensor;

D O I：

10.1016/S0925-4005(97)80011-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A capacitance humidity sensor is used as a test device to characterize the performance of 13 polyimide films in relative humidity sensing applications. This sensor has a multilayer, free-standing film construction. It consists of a humidity sensitive polyimide dielectric core and conductive layers consisting of carbon filled polysulfone on each side of the polyimide film to form a capacitor. Thirteen polyimide films, including commercial polyimides and films of novel chemistry, are investigated to determine the long term stability of sensors using the films exposed to 85 degrees C/85% RH for a total of 28 days. Differences in film chemistry are used to interpret trends in the environmental stability of the films.

引用

页码：343 / 348

页数：6

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