温敏性水凝胶的制备及其性能研究.pdf

网络首发时间：2022-01-18 11:38:04
网络首发地址：第 49 卷 S2 . 炭 科 学aly-
zer was used to test the thermal stability of the hydrogel． This thermosensitive hydrogel has good thermal stability and biodegradability，it
can change the sol－gel phase with the change of external temperature． When the external temperature is less than the critical transition
temperature，it will exhibit a small viscosity sol－gel． When it exceeds the critical transition temperature � LCST� ，it will be gelatinous，
which has the characteristics of high viscosity，good stability and high fire suppression performance．
Key words� coal spontaneous combustion� thermosensitive hydrogel� fire prevention and extinguishing technology� performance characteriza-
tion
制备聚 N－异丙基丙烯酰*** PNIPA� 以 NIPA 和丙烯
0 引 言
酸钠� SA� 为反应单体制备出线性共聚物水凝胶
防灭火技术的发展和应用推动着我国煤炭资源 � � � 在制备多孔共聚物水凝胶
P NIPA － co － SA L
的安全高效开采，在煤矿采空区防灭火常规注浆 注 � � 的过程中，是以 水溶液为反
、 P NIPA－co－SA P