| 摘要 |
PURPOSE:To reduce the hysteresis of humidity sensitive characteristics, by constituting a humidity sensitive resistance film from a hydrophilic polymer containing one or more of an yttrium ion or a rare earth element ion and a conductive powder. CONSTITUTION:One or more of an yttrium ion and a rare earth element ion is a humidity sensitive resistance film containing a hydrophilic polymer and a conductive powder and unevenly distributed to the surface layer thereof or contained in the whole to form a chelate in the molecule. By this method, a high- molecular chain is curled to ascertain the mutual contact of conductive particles and the swelling of the hydrophilic polymer during moisture adsorption is enhanced to enlarge the change in resistance increase. This humidity sensitive resistor is excellent in reversibility of the swelling and contraction during humidification and dehumidification and also excellent in response and hysteresis. |
