ADSORBENT FOR SENSING HUMIDITY FOR HUMIDITY SENSOR AND HUMIDITY CONDITIONING AGENT FOR ELECTRONIC EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide an absorbent of which the steam absorbing amount is rectilinearly increases corresponding to relative humidity, which has 30 wt.% or more of a steam adsorption/desorption amount in the range of 5-60% of relative humidity, which has 80 wt.% or more of a steam adsorption/desorption amount in the range of 5-95% of relative humidity, and the content of Na and K is 1 ppm or smaller.;SOLUTION: An amorphous aluminum silicate is synthesized by using an organic Si solution and Al solution containing almost no Na and K, making Si/Al ratio in mixing to be 0.7-1.0, mixing both solutions and concentrating by heating a supernatant after centrifugal separation. In the obtained amorphous aluminum silicate, steam adsorption amount increases rectilinearly corresponding to relative humidity, the obtained amorphous aluminum silicate has 30 wt.% or more of steam adsorption/desorption amount in the range of 5-60% of relative humidity, and has 80 wt.% or more of steam adsorption/desorption amount in the range of 5-95% of relative humidity, and can be used as adsorbent for sensing humidity for humidity sensor and humidity conditioning agent for electronic equipment.;COPYRIGHT: (C)2010,JPO&INPIT