阻抗型聚合物湿度传感器HMPTAC/St共聚物感湿膜的感湿性能

Resistance Polymeric Humidity Sensor Humidity sensitive Properties of HMPTAC/St Copolymeric Membrane

将２羟基３甲基丙烯酰氧丙基氯化三甲铵（ＨＭＰＴＡＣ）与苯乙烯（Ｓｔ）进行共聚反应，所得产物有良好的感湿性。用以制成的湿度传感器测湿范围宽（为１０％～９０％ＲＨ），再现性好（在±２％ＲＨ以内），耐环境变化。放置１２０天以上，感湿性能变化较小（在±３％以内）。

Hydroxy 3 methyl acryloyloxy propyl trimethylamine chloride (HMPTAC) was copolymerized with styrene(St) to form a product used as the membrane of humidity sensor.The humidity sensitive range of the sensor is 10%～90%RH,the reappearance is within ±2%RH.After storing for more than 120 days,its alteration in humidity sensitive property is within ±3%.