摘要
研究了聚磷酸铵(APP)和季戊四醇(PER)阻燃环氧树脂的阻燃性能和热分解特性。结果表明,阻燃环氧树脂的氧指数(LOI)随APP含量的增加而增加;当APP添加量达到20%时,阻燃环氧树脂的垂直燃烧性能达到V-0级。在APP阻燃环氧树脂中引入成炭剂PER使得体系的LOI值有所降低,但适量PER的引入使得阻燃体系的最大热释放速率降低。热失重(TG)实验结果表明,与未阻燃的环氧树脂相比,阻燃环氧树脂的初始分解温度有所降低,但在高温下阻燃环氧树脂的热稳定性较好。此外,还采用了激光拉曼光谱对阻燃环氧树脂燃烧后的炭层进行了分析。
The flammability of epoxy resin （EP） composites containing ammonium polyphosphate （APP） and pentaerythritol （PER） was studied by the limiting oxygen index （LOI）, UL-94 and cone calorimeter. It is found that the LOI values of the EP composites increase with increasing APP content. For the composite containing 20 % APP, the value is as high as 35 % and the composite reaches the V-0 rating. The LOI values of the EP/APP/PER composites are lower than those of the EP/APP composites. However, the peak rate of heat release of the EP/APP/ PER composites at the ratio APP/PER = 3：1 is lower than that of the EP/APP composite without PER. The thermogravimetric analysis results indicate that the initial decomposition temperatures of the EP/APP or EP/APP/ PER composites decrease compared with the epoxy resin. Moreover, the char left from the epoxy resin and flame retarded EP composites was investigated by laser Raman spectroscopy.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2009年第11期86-89,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(20776136)
同济大学‘985’平台资金
安徽高校省级自然科学研究重点项目计划(KJ2008A070)
河南理工大学河南省煤矿瓦斯与火灾防治重点实验室开放课题(HKLGF200701)资助
关键词
环氧树脂
聚磷酸铵
季戊四醇
膨胀型阻燃
热分解
epoxy resin
ammonium polyphosphate
pentaerythritol
intumescent flame retardation
thermal decomposition
