In this investigation the flame-retardant effect of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) on an epoxy resin (EP) was studied. The results showed that the peak of heat release rate (PHRR) and total heat release (THR) of EP/DOPO (FREP) with 5phr DOPO during cone calorimeter measurements were only 67.4% and 75.3% of those of pure EP, respectively. The thermal degradation behavior of FREP was analyzed by the Kissinger and Flynn-Wall-Ozawa methods, both of which indicated that the activation energy of the FREP thermal degradation was lower than that of pure EP. This was attributed to the addition of DOPO into the resin, which promoted the thermal degradation of the EP composite.

在这项研究中，研究了9,10-二氢-9-氧杂-10-磷菲基-10-氧化物（DOPO）对环氧树脂（EP）的阻燃作用。结果表明，锥形量热法测量5phr DOPO时EP / DOPO（FREP）的放热率（PHRR）和总放热（THR）分别仅为纯EP的67.4％和75.3％。用Kissinger和Flynn-Wall-Ozawa方法分析了FREP的热降解行为，这两者均表明FREP热降解的活化能低于纯EP。这归因于在树脂中添加了DOPO，这促进了EP复合材料的热降解。