A New Polymer Containing α-Aminophosphonate Unit Used as Reactive

Published online: 28 Jan 2014 in Phosphorus, Sulfur, and Silicon and the Related Elements Volume 189, Issue 3, 2014.

Abstract

A new polymer containing α-aminophosphonate unit (PAP) was synthesized through a simple and solvent-free Kabachnik–Fields reaction, and was characterized by NMR, FTIR, and gel permeation chromatography (GPC). This polymer was used as a novel reactive, halogen-free flame retardant. The curing behavior of bisphenol A type epoxy resin with PAP was investigated by differential scanning calorimetry (DSC), and the glass transition temperatures (Tg) of the cured sample were determined by dynamic mechanical analysis. Flammability and thermal stability of the cured epoxy resins with different contents of PAP were investigated by UL-94 test and thermogravimetric analysis (TGA). The results of UL-94 test and TGA show that PAP could improve the flame retardancy and thermal stability of cured epoxy resins. As the content of PAP was more than 20% in weight, the flame retardancy of epoxy resin can pass V-0 rating.

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