The Thermal Properties and Flame Retardancy of 9,10-Dihydro-9-oxa-10-phosphaphenanthrene 10-Oxide (DOPO)–Mg/Polyisocyanurate–Polyurethane Foam Composites
The Thermal Properties and Flame Retardancy of 9,10-Dihydro-9-oxa-10-phosphaphenanthrene 10-Oxide (DOPO)–Mg/Polyisocyanurate–Polyurethane Foam Composites
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DOI：
10.1246/bcsj.20160064
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发表时间：
2016-04
影响因子：
4
通讯作者：
Yanlin Liu;Jiyu He;Rongjie Yang
中科院分区：
文献类型：
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作者：
Yanlin Liu;Jiyu He;Rongjie Yang
采用新型含磷阻燃剂9,10-二氢-9-氧-10-磷菲-10-氧化物(DOPO) -Mg制备了一系列阻燃型聚异氰尿酸聚氨酯（PIR-PUR）泡沫。用热重分析（TG）和热重-红外光谱（TGA-FTIR）测定了含DOPO-Mg和不含DOPO-Mg的PIR-PUR泡沫的热稳定性和热解气体。结果表明，DOPO-Mg能显著减少PIR-PUR泡沫塑料分解过程中释放的含羰基、含甲基和含亚甲基的可燃气体。Py-GC-MS结果证明DOPO-Mg改变了PIR-PUR泡沫的热降解过程，阻止了高毒性可燃气体的产生。采用LOI法和锥量热法测试了PIR-PUR泡沫的阻燃性。不含DOPO-Mg的PIR-PUR样品的LOI和放热率分别为21.2%和190.7 kW m−2。在PIR-PUR泡沫中掺入25 phr DOPO-Mg， LOI值为23.2%。此外，5个小时…
A series of flame-retarded polyisocyanurate–polyurethane (PIR–PUR) foams were prepared using a novel phosphorus-containing flame retardant, 9,10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide (DOPO)–Mg. The thermal stability and pyrolytic gases of the PIR–PUR foam with and without DOPO–Mg were detected by TG and TGA-FTIR. The results indicated that DOPO–Mg can significantly reduce the combustible gases released during decomposition of the PIR–PUR foams, such as carbonyl group containing, methyl and methylene containing flammable gas. The Py-GC-MS results proved that DOPO–Mg changed the thermal degradation process of the PIR–PUR foam and prevented a highly toxic flammable gas from being generated. The flame retardancy of the PIR–PUR foams was tested using the LOI and cone calorimeter test. The LOI and heat release rate values of the PIR–PUR sample without DOPO–Mg were 21.2% and 190.7 kW m−2, respectively. 25 phr DOPO–Mg incorporation into the PIR–PUR foam resulted in a LOI value of 23.2%. In addition, 5 phr...