高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (5): 779.

• 论文 • 上一篇    下一篇

电阻型湿敏材料的核磁共振研究

华士英1, 王佳宇2, 辛耀权2   

  1. 1. 吉林大学理论化学研究所, 分子光谱与分子结构开放实验室, 长春, 130023;
    2. 吉林大学电子工程系
  • 收稿日期:1994-06-09 修回日期:1995-01-08 出版日期:1995-05-24 发布日期:1995-05-24
  • 通讯作者: 华士英,女,54岁,副教授.
  • 作者简介:华士英,女,54岁,副教授.

NMR Study on Resistance Type Humidity Sensors

HUA Shi-Ying1, WANG Jia-Yu2, XIN Yao-Quan2   

  1. 1. Institute of Theo. Chem., Key Lab. of Mole.Spectra and Mole. Struc., Jilin Univ., Changchun, 130023;
    2. Department of Electronic Engineering, Jilin Univeristy
  • Received:1994-06-09 Revised:1995-01-08 Online:1995-05-24 Published:1995-05-24

PDF (PC)

被引次数

3

摘要： 利用核磁共振氢谱研究了不同湿度和温度条件下聚乙烯亚胺、聚乙烯铵盐及环氧乙烷3种电阻型湿敏材料。通过化学位移变化分析了材料的感湿机理,指出3种材料中的活泼氢和水作用后能形成新的活泼氢,新旧活泼氢可发生快速交换现象,并产生带电离子,因而材料的电阻值随湿度的增加而大幅度地降低。

关键词: 聚乙烯亚胺, 聚乙烯铵盐, 聚环氧乙烷, 湿敏, 核磁共振氢谱

Abstract: Three resistance type humidity sensors (polyethyl-enimine, polyethyl-ammonium salt and PEO) were studied at various temperatures and humidities by 1HNMR. The hu miditive sensibility mechanism of these sensors was proposed through the change of chemical shifts. The active hydrogen in the three materials reacts with H2O to form new active hydro gen, and the exchange interaction of new active hydrogen with old ones is very fast. At the same time, the current carriers are generated. As a result, the resistance of materials is de creased with raising humidity.

Key words: Polyethyl enimine, Polyethylene-ammonium salt, PEO, Humidity sensor, 1HNMR

中图分类号: 

TrendMD: