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Structure characterization, reactivity, and thermal properties of new cyclic phosphine oxide epoxy resin containing tetra‐oxirane rings
Author(s) -
Shau MinDa,
Wang TsuiShuang
Publication year - 1998
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19980531)68:9<1397::aid-app3>3.0.co;2-6
Subject(s) - epoxy , phosphine oxide , curing (chemistry) , differential scanning calorimetry , polymer chemistry , materials science , thermogravimetric analysis , oxide , reactivity (psychology) , chemistry , composite material , organic chemistry , phosphine , catalysis , medicine , physics , alternative medicine , pathology , metallurgy , thermodynamics
A new type of epoxy resin, which contained cyclic phosphine oxide and tetra‐oxirane rings in the main chain, was synthesized. The structure of the new type of epoxy resin was confirmed by elemental analyses (EA), infrared (IR) spectroscopy, and 1 H nuclear magnetic resonance (NMR) and 13 C‐NMR spectroscopies. In addition, compositions of the new synthesized cyclic phosphine oxide epoxy resin (TGCAO) with three curing agents, for example, bis(3‐aminophenyl)ethylphosphine oxide (BEMP), 4,4′‐diaminodiphenylmethane (DDM), and 4,4′‐diaminodiphenylsulfone (DDS) were used for making a comparison of its curing reactivity, heat, and flame retardancy with those of Epon 828 and DEN438. The reactivities were measured by differential scanning calorimetry. Through the evaluation of thermal gravimetric analysis, those polymers, which were obtained through the curing reactions between the new epoxy resin and three curing agents (BEMP, DDM, and DDS), also demonstrated adequate thermal propeties, as well as a high char yield. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 68: 1397–1409, 1998