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Hydrogels containing modified ammonium polyphosphate for fireproof materials
Author(s) -
Chen Qian,
Cui Xiao Feng,
Zheng Wen Jiang,
Zou Wei,
Li Yanli,
Yan Jie,
Yang Hu,
Yang Fan,
Zhang Hai Bo
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.51007
Subject(s) - ammonium polyphosphate , self healing hydrogels , materials science , fire retardant , thermal stability , composite material , intumescent , radical polymerization , methacrylate , polymerization , chemical engineering , acrylamide , polymer chemistry , polymer , monomer , engineering
Hydrogels containing a large amount of water have been widely studied as fireproof materials. However, the organic networks that composed the gel easily burns as water evaporates. In this work, the widely used intumescent flame‐retardant ammonium polyphosphate was modified by carbon–carbon double bonds (abbreviated as MAPP) and introduced in alginate/poly (acrylamide‐co‐stearyl methacrylate) [alginate/P(AAm‐ co ‐SMA)] hydrogel by free radical polymerization. The resultant MAPP@alginate/P(AAm‐ co ‐SMA) hydrogels show good mechanical strength of 650 kPa and healing efficiency of 80%. Thermal analysis and thermal protective performance tests indicate that the MAPP particles improve the thermal stability and heat resistance of gel. The fireproof test shows that the MAPP@alginate/P(AAm‐ co ‐SMA) gel composite shows twice of fire proof time over the pure hydrogels.