MOISTURE SENSOR

To provide a moisture sensor with excellent heat resistance.SOLUTION: A moisture sensor 10 includes, on a substrate 11, a moisture detection unit 12 and a pair of wiring electrodes 13 and 14 electrically connected to the moisture detection unit 12. The moisture detection unit 12 includes conductive...

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Main Authors FUJITA TAKAYUKI, OKAMURA KAZUHIRO, KADOKAWA OSAMU, TAKAMATSU YUKI, HAGIWARA DAIKI, AZUMI KATSUYUKI, FUKUYA SATOMI, SHOBO YOSHIHIRO
Format Patent
LanguageEnglish
Japanese
Published 16.09.2021
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Summary:To provide a moisture sensor with excellent heat resistance.SOLUTION: A moisture sensor 10 includes, on a substrate 11, a moisture detection unit 12 and a pair of wiring electrodes 13 and 14 electrically connected to the moisture detection unit 12. The moisture detection unit 12 includes conductive powder, a copolymer or homopolymer of N-vinyl-2-pyrrolidone, and a phenolic antioxidant. The phenolic antioxidant is hydroquinone. The moisture detection unit contains the conductive powder by more than 22 mass% and 28 mass% or less, contains the copolymer or homopolymer of N-vinyl-2-pyrrolidone by more than 50 mass%, and contains the phenolic antioxidant by more than 10 mass%.SELECTED DRAWING: Figure 1 【課題】耐熱性に優れる水分センサを提供する。【解決手段】水分センサ10は、基板11上に、水分検知部12と、水分検知部12と電気的に接続されている一対の配線電極13、14とを有する。水分検知部12は、導電性粉末と、N−ビニル−2−ピロリドンの単独重合体又は共重合体と、フェノール系酸化防止剤とを含む。また、前記フェノール系酸化防止剤は、ヒドロキノンである。また、前記水分検知部は、前記導電性粉末の含有量が22質量%よりも多く、28質量%以下であり、前記N−ビニル−2−ピロリドンの単独重合体又は共重合体の含有量が50質量%よりも多く、前記フェノール系酸化防止剤の含有量が10質量%よりも多い。【選択図】図1
Bibliography:Application Number: JP20200036952