A fast responsive thermosensivtive P(NIPAM/AA-Na) hydrogel and its fire suppressing experiment - Details

Author：

Chun-Lei, Jia (Chun-Lei, Jia.) | Qun, Wang (Qun, Wang.) (Scholars：王群) | Tangkai, T. (Tangkai, T..)

Indexed by：

EI Scopus

Abstract：

A　fast　responsive　thermosensitive　hydrogel　poly((N-isopropy-　lacrylamide/Sodium　acrylate)　(P(NIPAm/AA-Na))　were　prepared　by　free　radical　polymerization　methods.　The　low　critical　soluble　temperatures　(LCST)　of　the　hydrgols　is　about　60°　in　5%wt　aqueous　solutions.　The　heterogeneous　macroporous　structure　was　observed　by　SEM.　Deswelling　degree　of　the　hydrogel　is　up　to　75%　in　60　seconds.　The　1A　rating　wood　stacking　fire　were　suppressed　with　water,　colloid　extinguishing　agent　B　of　Zhejiang　University　and　the　thermosensitive　P(NIPAm/AA-Na)　hydrogel　respectively.　Radiant　heat　and　the　temperature　were　recorded　by　several　heat　probes　and　thermocouples　during　extinguishing.　The　results　showed　that　the　fire　extinguishing-time　of　the　thermosensitive　hydrogel　is　shortest　at　the　same　practical　rate　of　application　among　the　three.　Consumption　of　extinguishing　agent　is　the　least.　The　water　damage　to　the　section　unfired　is　low　after　fire　extinguishing.　The　extinguishing　agent　residual　is　easy　to　clean,　so　the　extinguishing　efficiency　is　high.　©　(2013)　Trans　Tech　Publications,　Switzerland.

Keyword：

Thermocouples Hydrogels Materials science Fire extinguishers Free radical polymerization Sodium

Author Community：

[ 1 ] [Chun-Lei, Jia]School of Civil and Environment Engineering, University of Science and Technology Beijing, Beijing 10083, China
[ 2 ] [Chun-Lei, Jia]Department of Fire Fighting Command, The Chinese People's Armed Police Forces Academy, Langfang, Hebei Province 06500, China
[ 3 ] [Qun, Wang]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100022, China
[ 4 ] [Tangkai, T.]Department of Fire Fighting Command, The Chinese People's Armed Police Forces Academy, Langfang, Hebei Province 06500, China