Abstract
本研究合成苯氧磷基酸酐10-phenylphenoxaphosphine-2,3,7,8-dicarboxylic anhydride-10-oxide (PPDA) 作為環氧樹脂的硬化劑，期望將苯氧磷基引入環氧樹脂交聯結構中，能夠改善環氧樹脂的耐熱耐燃性o合成之PPDA分別由IR、1H-NMR、13C-NMR、EA鑑定結構，而後與環氧樹脂以不同當量比混合硬化，並由動態及恆溫DSC掃瞄之結果決定Epon 828/PPDA系統之硬化溫度及時間o 耐熱耐燃性的測試方面，則以TGA測量Epon 828/PPDA硬化物在空氣及氮氣下的熱重損失，且以多重昇溫速率法計算不同熱重損失下的活化能o 並藉由FTIR偵測硬化物裂解前後官能基特性吸收的改變，以推測此系統的熱裂解機構oIn this study, an anhydride compound which containing phenoxa-phosphine ring, 10-phenyl-phenoxaphosphine-2,3,7,8-dicarboxylicanhydride -10-oxide ( PPDA ), was synthesized and used as thecuring agent of epoxy. Through the spectrum characterizationsof infrared ( IR ), 13C-NMR, 1H-NMR, and the elemental analysis( EA ), the structure of PPDA was confirmed. The curingtemperature and time of Epon 828 / PPDA were determined fromthe dynamic and isothermal thermograms of differential scanningcalorimetric ( DSC ), respectively. The thermal property ofcured Epon 828 / PPDA polymer was evaluated by thermalgravimetric analysis ( TGA ). It was found that the thermalstability and flame retardancy of epoxy could be improved byusing a phenoxaphosphine anhydride curing agent. The kineticmodel used to describe the thermal degradation of cured Epon828/PPDA was the n-th order model where the activation energywas determined from the multiple heating rate method. Based onthe absorption change of characterized functional groups inFTIR spectra, the initiation mechanism of thermal decompositioncould be known and proposed.