N,N-二甲基-N-辛基-N-丙基溴化铵的合成  

Synthesis of N,N-(dimethyl)-N-(octyl)-N-quaternary ammonium salt

作　　者：龙光斗[1] 彭历[2] 王绍磊[1] 肖舒[1] 李睿哲[3] 

机构地区：[1]华中师范大学化学学院,湖北武汉430079 [2]武汉市消防支队,湖北武汉430070 [3]长江大学化学与环境工程学院,湖北荆州434023

出　　处：《消防科学与技术》2016年第9期1278-1280,共3页Fire Science and Technology

基　　金：国家“863”高技术研究发展计划项目“全氟辛烷磺酸及其盐替代品开发技术”(2010AA065101)

摘　　要：以全氟丁基磺酰氟和N,N-二甲基-1,3-丙二胺为原料合成全氟丁基磺酰胺,进一步季铵盐化反应制备N,N-二甲基-N-辛基-N-(N'-全氟丁基磺酰胺基)丙基溴化铵。采用FT-IR、1 HNMR、19FNMR、MS等方法表征了产物的化学结构。表面张力等测试表明,产物具有优良的表面活性,其溶液临界胶束浓度为2mg/mL,最低表面张力可达16.7mN/m。其与碳氢表面活性剂复配体系的表面活性提高,铺展时间小于0.5s,适合作为全氟辛基磺酸/辛酸及其盐类(PFOS/A)替代品应用于水成膜泡沫灭火剂。The novel surfactant of N, N- dimethyl- N- oetyl- N-（N＇-perfluorobutyl sulfonyl） propyl ammonium bromide was prepared by quaternary ammonium salt reaction of perfluorinated butyl sulfoamide, which was obtained from the perfluorinated butyl sulfonyl fluoride and N, N- dimethyl- 1,3 - propanediamine. The chemical structure of the product was characterized by the FT -IR, 1HNMR, 19FNMR and MS. The product has excellent surface activity and low surface tension of 16.7 mN/m, critical micelle concentration of 2 mg/mL, by the surface tension performance test, etc. Its admixture system with hydrocarbon surfactant has higher surface activity and shorter spreading time less than 0. 5 s, and can be used as a candidate for perfluoro-octyl sulfonate/octylic acid and its salts （PFOS/A） in aqueous film-forming foam extinguishing agent.

关 键 词：氟碳表面活性剂 季铵盐 表面活性 临界胶束浓度 复配 水成膜泡沫 

分 类 号：X932[环境科学与工程—安全科学] TQ569[化学工程—炸药化工]