摘要
通过箱式发泡制备了三-(3-DOPO-2-羟基-丙基)-1,3,5-三嗪-2,4,6-三酮(TGD)/三-(3-DOPO-丙基)-1,3,5-三嗪-2,4,6-三酮(TAD)单独添加和分别与可膨胀石墨(EG)复配阻燃的硬质聚氨酯泡沫(RPUFs)。利用极限氧指数仪(LOI)、锥形量热仪,热重-气相色谱-质谱联用仪和扫描电子显微镜研究了TAD和TGD在RPUF中的阻燃行为。结果表明,TAD和TGD均能提高RPUF的LOI值,降低RPUF的总热释放量,平均有效燃烧热和热释放速率峰值,并且TGD对这些数值的影响明显大于TAD;随着EG的加入,TGD/EG/RPUF体系表现出比TAD/EG/RPUF更高的LOI值和残炭产率。
The flame-retardant rigid polyurethane foams (RPUFs) containing tris-(3-DOPO-2-hydroxy-propyl)-1,3,5-triazine-2,4,6-trione (TGD)/tris-(3-DOPO-propyl)-1,3,5-triazine-2,4,6-trione (TAD) and expansible graphite (EG) were prepared by a box foaming method. The effects of TGD and TAD on the flame-retardant behaviors of RPUFs were investigated by limiting oxygen index (LOI), cone calorimeter test, TGA-gas chromatography-mass spectrometer (TGA-GC-MS) and scanning electron microscopy. The results indicated that the introduction of both TAD and TGD into RPUFs could improve their LOI but reduced their values of total heat release, average effective heat of combustion and heat release rate. The influence of TGD on these values was more significant than that of TAD. On the other hand, the TGD/EG/RPUF system exhibited a higher LOI value and a larger char yield than the TAD/EG/RPUF one.
作者
李林洁
张振宇
魏思淼
白怡晨
钱立军
LI Linjie;ZHANG Zhenyu;WEI Simiao;BAI Yichen;QIAN Lijun(School of Materials Science and Mechanical Engineering, Beijing Technology and Business University, Beijing 100048, China;Engineering Laboratory of Non-halogen Flame Retardants for Polymers, Beijing 100048, China;Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, Beijing 100048, China)
出处
《中国塑料》
CAS
CSCD
北大核心
2019年第3期6-11,共6页
China Plastics
基金
国家重点研发计划资助(2016YFB0302104)
关键词
聚氨酯硬泡
阻燃
可膨胀石墨
磷
rigid polyurethane foam
flame retardant
expansible graphite
phosphorus
