PURPOSE: To attain an element with high strength and good humidity sensitivity by using a sinter which contains an organic silicon compound copolymer, carbonic powder and silicic powder in given amount.
CONSTITUTION: A humidity sensitive part is formed of a sinter which contains 20W85wt% an organic silicon compound copolymer, 0.5W15wt% carbonic powder and 5W60wt% silicic powder. For example, comb-like electrodes 2 are screen- printed on an alumina insulative substrate 1 using Pt-Pd alloy paste, Pt lead wires 4 are attached and then it is baked. 54wt% a methylphenylsilicone initial copolymer, 3wt% carbon black, 35wt% silica, aerosol, and an addition of 8wt% comprising an organic titanium compound, drying oil and talc are mixed with one another. After adding thinner and kneading, the substrate is immersed in the mixture to form a coating film and then sintered to attain a moisture sensitive element.
TAKEUCHI MORIHISA
MIYAO KUNIHIKO
SHIMAMOTO KOUZOU
WATAI HISAO
MOMIYAMA KIMIO
