Properties and curing kinetic of diglycidyl ether of bisphenol A cured with a phosphorus‐containing diamine

摘要: Diglycidyl ether of bisphenol A (DGEBA) was cured with a new phosphorus-containing diamine, 1,4-bis(3-aminobenzoyloxy)-2-(6-oxido-6H-dibenz〈c,e〉〈1,2〉oxaphosphorin-6-yl)phenylene II, which derived from 2-(6-oxido-6H-dibenz〈c,e〉〈1,2〉oxaphosphorin-6-yl)-1,4-dihydroxy phenylene and 3-nitrobenzoyl chloride followed by hydrogenation. The structure the synthesized curing agent II confirmed through EA, IR, 1H-NMR, 31P-NMR. kinetics DGEBA/II system were studied dynamic isothermal DSC method. Dynamic kinetic parameters calculated using Kissinger Ozawa's methods, respectively. Isothermal parameters, including k1, k2, m, n, determined an autocatalytic mechanism proposed Kamal. model gives good description up to onset vitrification. glass transition temperatures epoxy (DGEBA/II) 180°C based on DMA 170°C DSC, decomposition (Td onset) 376 367°C under nitrogen air, Char yields at 700°C 38 18% Limiting oxygen index (LOI) 30, thus diamine found impart flame retardancy resin. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 1635–1645,