离子迁移谱仪硅橡胶进样膜的毒水渗透分离性能研究
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- 英文论文题名：Chemical Agents/Water Vapor Permeation and Separation Performance of Silicone Rubber Sampling Membranes of Ion Mobilitiy Spectrometers
- 论文作者：秦墨林 ; 郭成海 ; 杨柳
- 英文论文作者：Molin Qin ; Chenghai Guo ; Liu Yang ; Research Institute of Chemical Defense
- 年：2016
- 作者机构：防化研究院;
- 论文关键词：离子迁移谱 ; 进样膜 ; 硅橡胶 ; 毒水分离
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十四分会：公共安全化学
- 语种：中文
- 分类号：TQ028.8
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十四分会 ; 公共安全化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：165k
- 原文格式：D
- 会议级别：全国
摘要
离子迁移谱仪(IMS)漂移管中的水分需在较低的水平才能得到稳定可靠的离子流信号,采用具有选择性的硅橡胶进样膜可以将水蒸气和待检测的有机化合物实现高效分离~([1])。硅橡胶膜应具有毒剂渗透系数高和毒水分离系数大的特点。将疏水化改性的白炭黑掺入硅橡胶中制备了不同厚度的分离膜~([2]),考察了其毒水渗透分离性能。随着SiO_2掺杂量的增加(5~30%),DMMP透过率、水蒸气透过率和毒水分离因子均先增大,后减小。减小硅橡胶膜的厚度有利于提高毒剂透过率,毒水分离因子会下降。膜温较高时(30~100℃),传质初期DMMP渗透速率更快,达到平衡时DMMP透过率相对较低。随着膜温的增大,水蒸气透过率减小,毒水分离因子先增大后减小。GB在PDMS中的溶解系数和扩散系数均大于DMMP,表现为GB在硅橡胶膜中的透过率大于DMMP。
Selective silicone rubber membranes mixed with modified hydrophobic nano-silica were used to separate chemical agents and water vapor for the sampling of IMS to control a low moisture level in the drift tube. The sampling membranes were expected to have excellent chemical agents permeability and dehumidity efficiency. Effect of doping content of silica, thickness and temperature of membranes on permeability of chemical agents and separation factor were evaluated. Sarin permeation ratio of silicone rubber membranes was larger than DMMP pemation ratio for the less molecular dimension and solubility parameters of sarin than DMMP.
Selective silicone rubber membranes mixed with modified hydrophobic nano-silica were used to separate chemical agents and water vapor for the sampling of IMS to control a low moisture level in the drift tube. The sampling membranes were expected to have excellent chemical agents permeability and dehumidity efficiency. Effect of doping content of silica, thickness and temperature of membranes on permeability of chemical agents and separation factor were evaluated. Sarin permeation ratio of silicone rubber membranes was larger than DMMP pemation ratio for the less molecular dimension and solubility parameters of sarin than DMMP.
引文
[1]G A Eiceman,Z Karpas,著,郭成海,曹树亚,译.离子迁移谱仪[M].北京:国防工业出版社,2010:110.
[2]秦墨林,郭成海,杨柳,赵建军,刘卫卫.合成橡胶工业,2015,38(3):185.
[2]秦墨林,郭成海,杨柳,赵建军,刘卫卫.合成橡胶工业,2015,38(3):185.