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WATER BASED COATINGS WITH IMPROVED FLAME STABILITY DUE TO USE PHOSPHAZENE DERIVATE
Autoři: Rückerová Adéla | Machotová Jana | Puková Kateřina | Kalendová Andréa
Rok: 2017
Druh publikace: ostatní - přednáška nebo poster
Strana od-do: nestránkováno
Tituly:
Jazyk Název Abstrakt Klíčová slova
eng WATER BASED COATINGS WITH IMPROVED FLAME STABILITY DUE TO USE PHOSPHAZENE DERIVATE In this study the properties of a novel flame retardant based on halogenphosphazene derivative and its application in waterborne coatings based on self-crosslinking latexes was investigated. Latexes of functionalized core-shell particles bearing in the structure hexaamino-cyclo-triphosphazene molecules were prepared by the semi-continuous non-seeded emulsion polymerization of methyl methacrylate, butyl acrylate, glycidyl methacrylate and methacrylic acid as main monomers. For intraparticle crosslinking, glycidyl methacrylate was copolymerized into the shell layer of latex particles to provide reaction with hexaamino-cyclo-triphosphazene. Thus can be the flame retardant incorporated in the structure of emulsion copolymers. The increasing concentration of hexaamino-cyclo-triphosphazene was found to have the positive effect on the flame stability of coating systems and also increased the crosslinking density of latex particles. The incorporation hexaamino-cyclo-triphosphazene did not affect transparency, flexibility, toughness and adhesive properties of resulting coatings. Moreover, the presence of the novel flame retardant decreased water sensitivity and increased the flame stability of coatings in terms of reduced total heat release, decreased amount of released smoke and drop in maximum average rate of heat emission which indicated a slower flame spread during the material combustion. Emulsion polymerisation; Core-shell latex; Flame retardant; Phosphazene; Cone calorimeter

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