期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 125, 期 3, 页码 536-541出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2010.10.020
关键词
Epoxy resin; B. Chemical synthesis; Flame retardancy; D. Thermal properties
资金
- Program for Specialized Research Fund for the Doctoral Program of Higher Education [200803580008]
- Program for Science and Technology of SuZhou [SG-0841]
- China Postdoctoral Science Foundation [20080430101]
Poly(DOPO substituted dihydroxyl phenyl pentaerythritol diphosphonate) (PFR) was synthesized via the reaction between 10-(2,5-dihydroxyl-phenyl)-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO-BQ) and pentaerythritol diphosphonate dichloride (SPDPC). The structures of PFR were characterized by Fourier transformed infrared (FTIR) spectroscopy and H-1 nuclear magnetic resonance (H-1 NMR). Thermal degradation behaviors and flame retardant properties of the epoxy resin (ER)/PER systems were investigated from the thermogravimetric analysis (TGA), UL-94 test and the limiting oxygen index (LOI) test. Moreover, the surface morphology of the char residue was studied by scanning electron microscopy (SEM). When the PFR content reached 10 wt%, the epoxy resin system met the UL-94 V0 classification and the LO1 value of 30.2. The microscale combustion calorimetry (MCC) was used to evaluate the combustion behaviors of the ER/PFR. It was found that the addition of PFR obviously decreased the value of peak heat release rate and total heat release of the hybrids. The TGA results showed that the epoxy resin with 10 wt PFR exhibited high char yields. The high char yields and the high limiting oxygen index values were found to certify the excellent flame retardancy of this phosphorus-containing epoxy resin. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.
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