以邻氟苯酚、3-溴丙烯与含氢硅油为原料,合成有机磷毒剂压电传感器敏感材料聚甲基[3-(2-羟基-3-氟)苯基]丙基硅氧烷.将聚甲基[3-(2-羟基-3-氟)苯基]丙基硅氧烷料涂覆在QCM传感器上,研究其对有机磷毒剂模拟剂甲基膦酸二甲酯(DMMP)和其它干扰气体的响应.结果表明,在13.2×10~(-6)～65.8×10~(-6)范围内,传感器对DMMP的响应成呈好的线性关系,灵敏度为9.369×10~6 Hz,最低检测极限为0.323×10~(-6)(S/N=3),对DMMP的响应远高于其它干扰气体.
A new material, poly{methyl [3-(2-hydroxy-3-fluoro) phenyl] propyl siloxane},which is sensitive to toxic organophosphate vapor, is synthesized with 2-fluorophenol, allyl bromide and poly methyl hydrosiloxane as raw materials. The poly{methyl [3-(2-hydroxy-3-fluoro) phenyl]propyl siloxane} is coated on quartz crystal microbalance (QCM) to investigate its gas sensitive properties to dimethyl methylphosphonate (DMMP) vapor, a stimulant of nerve agents, and other interfering vapors. The poly{methyl [3-(2-hydroxy-3-fluoro) phenyl]propyl siloxane}-QCM sensor responds linearly to DMMP vapor with a slope of 9. 369×10~6Hz in the 13. 2×10~(-6)～65. 8×10~(-6) range and the limit of detection of 0. 323 × 10~6. When tested with saturated vapors, the sensor is more sensitive to DMMP than to other interfering vapors.
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