摘要
分别采用氧指数（ＬＯＩ）、差示扫描量热分析（ＤＳＣ）、热失重分析（ＴＧ）、ＩＲ光谱分析等方法研究了聚合度（ＤＰ）分布在２０～１２０区间的芳香族聚磷酸酯（ＰＰＰ）对环氧树脂（Ｅ－４４）固化物阻燃作用的变化规律。结果表明，ＤＰ为４３～５５之间的ＰＰＰ阻燃作用最佳。原因是ＤＰ为４３～５５的ＰＰＰ可较大程度地改变环氧树脂固化物热氧降解反应历程，因而其ＬＯＩ数值大，该结论亦被ＩＲ光谱热示踪所支持。其研究结果可为ＰＰＰ的合成与应用提供参考。
By limiting oxygen index( LOI ), heating analysis(TG, DSC) and IR spectrograph, the relationship between the polymer degree( DP ) of polyphenyl phosphates(PPP) and the flame retardancy over epoxy resin(E 44) was studied. The experimental results show that in the range from 20 to 120 of the polymer degree( DP ), the PPP of 43￣55 ( DP ) possess better flame retardancy because they change thermal oxygen degradation mechanism of epoxy resin greater than other polyphenyl phosphates(PPP) of polymer degree.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1999年第4期81-83,共3页
Polymer Materials Science & Engineering
关键词
芳香族
聚磷酸酯
聚合度
阻燃性
polyphenyl phosphates, polymer degree( DP ), flame retardancy epoxy resin, heating analysis, IR spectrograph
