温敏性水凝胶灭火剂热稳定性能研究  

Study on the thermal stability of thermosensitive hydrog

作　　者：董雪珂[1] 杨漪[1] 

机构地区：[1]西安市消防支队,陕西西安710065

出　　处：《消防科学与技术》2017年第7期987-990,共4页Fire Science and Technology

摘　　要：采用离子聚合法制备聚N-异丙基丙烯酰胺PNIPA;以NIPA和丙烯酸钠(SA)为反应单体,水溶液为反应介质制备线性共聚物水凝胶P(NIPA-co-SA)_L;以Na Cl水溶液为反应介质,NIPA和SA为反应单体制备多孔共聚物水凝胶P(NIPA-co-SA)_P。利用热重分析仪,在氮气气氛下,分别对三种样品进行热失重行为分析和热分解动力学分析,研究其热稳定性能。结果表明:N-异丙基丙烯酰胺类聚合物具有优异的热稳定性。两种共聚物水凝胶P(NIPA-co-SA)的热稳定性更好,热降解活化能比均聚物PNIPA更高,高温下分解更为困难,具有一定阻燃能力。P（N-isopropylacrylamide） （PNIPA） was prepared by ion- ic polymerization.P（N-isopropylacrylamide-co-Sodium Acrylate） with linear structure（P（NIPA-co SA）_L） was prepared by reac- tion monomer of NIPA and Sodium Arcylate （SA） in reaction me dia of aqueous solution. P（N-isopropylacrylamide-co-Sodium Ac rylate） with porous strueture（P（NIPA-co-SA）_P） was prepared by reaction monomer of NIPA and SA in reaction media of NaCl solu tion. The thermal mass loss and decomposition kinetics of these three types of hydrogels were analyzed by thermogravimetry （TG） in Nz atmosphere. The thermal stability of them was analyzed. Ac cording to the results, the three types of materials possess excel lent thermal stability. In addition, because of higher apparent acti vation energy, P（NIPA-co-SA）_L and P（NIPA-co-SA） P per- formed better thermal stability than PNIPA, and the decomposi tion is difficult at high temperature, which brings the ability of flame retardant.

关 键 词：温敏性水凝胶 水系灭火剂 防灭火材料 热动力学 

分 类 号：X924.4[环境科学与工程—安全科学] TQ569[化学工程—炸药化工]