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Thermal properties of main-chain phosphorus-containing epoxide cured with amine

机译:胺固化的主链含磷环氧化物的热学性质

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A main-chain phosphorus-containing diepoxide, bis-glycidyloxy phenylphosphate (BGPP), was synthesized, then blended with various contents of a 4,4'-diglycidylether of bisphenol A (DGEBA)-type epoxy resin, DER 331. The curing reactions of the blended resins with diethyltriamine (DETA) and the thermal properties of the cured specimens were investigated with an infrared spectrophotometer, a differential scanning calorimeter, and a thermogravimetry analyzer. The activation energy is 51.2 kJ/mol for the BGPP-DETA curing system, and it increases with the content of DER 331 for the BGPP-DER 331-DETA systems. The average apparent decomposition activation energies of the thermosets with phosphorus-containing epoxide are from 147.3 to 165.1 kJ/mol, which are higher than that. of the DER 331-DETA system (95.8 kJ/mol). The BGPP-DETA system shows a relatively higher char yield and limiting oxygen index (LOI) value, 29-31, but the thermoset with BGPP results in a decrease in the T-g. (C) 2002 John Wiley Sons, Inc. [References: 19]
机译:合成了主链含磷的二环氧双缩水甘油氧基苯基磷酸酯(BGPP),然后将其与各种含量的双酚A(DGEBA)型环氧树脂的4,4'-二缩水甘油醚DER 331混合。用红外分光光度计,差示扫描量热仪和热重分析仪研究了与二乙基三胺(DETA)混合的树脂的粘度和固化样品的热性能。对于BGPP-DETA固化系统,活化能为51.2 kJ / mol,对于BGPP-DER 331-DETA系统,活化能随DER 331含量的增加而增加。具有含磷环氧化物的热固性材料的平均表观分解活化能为147.3至165.1 kJ / mol,高于该值。 DER 331-DETA系统(95.8 kJ / mol)。 BGPP-DETA系统显示出相对较高的焦炭收率和极限氧指数(LOI)值29-31,但是使用BGPP的热固性材料导致T-g降低。 (C)2002 John Wiley Sons,Inc. [参考:19]

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