Flame retardance and shrinkage reduction of polystyrene modified with acrylate-containing phosphorus and crosslinkable spiro-orthoester moieties
作者： J. Canadell , B.J. Hunt , A.G. Cook , A. Mantecón , V. Cádiz
DOI: 10.1016/J.POLYMDEGRADSTAB.2007.05.017
关键词: Polymerization 、 Materials science 、 Polymer chemistry 、 Acrylate 、 Radical polymerization 、 Polymer 、 Cationic polymerization 、 Prepolymer 、 Fire retardant 、 Fire-safe polymers
摘要: Styrene was radically copolymerized with a spiro-orthoester an acrylate group (SOE-AC), and terpolymerized SOE-AC diethyl(methacryloyloxymethyl)phosphonate (DEMMP). This done for several different feed ratios, to obtain polymers moieties in the side chain. These were then crosslinked ytterbium triflate, as cationic initiator, via double ring-opening polymerization. The thermal stability fire retardant properties of these materials evaluated by TGA LOI. DEMMP-containing give which significantly more flame than nonphosphorus-containing materials, indicated LOI measurements. volume changes measured upon crosslinking density measurements gas pycnometer. In all cases, expansion observed. indicates that is effective monomer crosslinkable without changes.
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