ACTION OF SOME ORGANOPHOSPHONIC COMPOUNDS ON A DIGLYCIDYL ETHER-BISPHENOL-A EPOXY-RESIN

The effect of three organophosphonic compounds on the thermooxidative degradation of the uncured diglycidyl ether-bisphenol-A epoxy resin wa s investigated, using infrared spectroscopy, thermogravimetry, differe ntial thermogravimetry, static pyrolysis, pyrolysis-gas chromatography and elemental analysis. The results obtained indicate that additives with phosphorus and chlorine or nitrogen in molecules exercise an infl uence upon the degradative process of uncured resin by catalysing its decomposition in the lower temperature region. At the same time, the t ested additives promote the formation of highly thermostable and non-f lammable structures in the solid residue.