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    • 3. 发明授权
    • Polymer-based humidity sensing elements
    • 基于聚合物的湿度感测元件
    • US06247349B1
    • 2001-06-19
    • US08801886
    • 1997-02-18
    • Chun-Yuan LeePing Ping TsaiChia-Jung Lu
    • Chun-Yuan LeePing Ping TsaiChia-Jung Lu
    • G01N936
    • G01N27/126G01N27/121G01N27/225
    • A porous poly(2-acryl-amido-2-methyl-propane sulphonic acid)-based humidity sensing element is disclosed which provides improved range of humidity measurement and response time with little or no hysteresis. It includes: (a) a non-conductive substrate which has a pair of electrodes formed thereon; (b) a porous poly(2-acryl-amido-2-methyl-propane sulphonic acid) film formed on said electrodes. The porous poly(2-acryl-amido-2-methyl-propane sulphonic acid) film is formed by first forming a non-porous poly(2-acryl-amido-2-methyl-propane sulphonic acid) film on the electrodes, then subjecting the non-porous poly(2-acryl-amido-2-methyl-propane sulphonic acid) film to a heat treatment at temperatures between about 170° C. and 240° C. such that a porous structure is formed in said poly(2-acryl-amido-2-methyl-propane sulphonic acid) film. The poly(2-acryl-amido-2-methyl-propane sulphonic acid) can be modified by incorporating a cation, such as hydrogen, lithium, potassium, sodium, ammonium, primary, secondary, and tertiary amine ions, and tetra-alkyl ammonium ions.
    • 公开了一种多孔聚(2-丙烯酰基 - 酰氨基-2-甲基 - 丙烷磺酸)的湿度感测元件,其提供了很少或没有迟滞的改善的湿度测量和响应时间范围。 它包括:(a)在其上形成有一对电极的非导电衬底; (b)在所述电极上形成的多孔聚(2-丙烯酰胺基-2-甲基 - 丙磺酸)膜。 通过首先在电极上形成无孔聚(2-丙烯酰胺基-2-甲基 - 丙烷磺酸)膜,形成多孔聚(2-丙烯酰胺基-2-甲基 - 丙烷磺酸)膜,然后 在约170℃和240℃之间的温度下对无孔聚(2-丙烯酰胺基-2-甲基 - 丙烷磺酸)膜进行热处理,使得在所述聚( 2-丙烯酰基 - 酰氨基-2-甲基 - 丙磺酸)膜。 聚(2-丙烯酰胺基-2-甲基 - 丙烷磺酸)可以通过引入阳离子如氢,锂,钾,钠,铵,伯,仲和叔胺离子和四烷基 铵离子。