Publikace detail

One-component coating binders based on self-crosslinking latex: Effect of covalently linked flame retardants and alternative crosslinking agents on coating properties

Autoři: Rückerová Adéla | Machotová Jana | Kalendová Andréa | Puková Kateřina

Rok: 2019

Druh publikace: ostatní - přednáška nebo poster

Strana od-do: nestránkováno

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Jazyk	Název	Abstrakt	Klíčová slova
eng	One-component coating binders based on self-crosslinking latex: Effect of covalently linked flame retardants and alternative crosslinking agents on coating properties	Self-crosslinking latexes for one-component coating binders were prepared by semi-continuous emulsion polymerization. Structured coreshell latex particles were composed of methyl methacrylate, butyl acrylate, methacrylic acid as the main monomers and a novel flame retardant as the intra-particle crosslinking agent. The flame retardant molecule of hexaallylamino-cyclo-triphosphazene (HAACTP) was covalently linked to acrylic monomers in the shell structure of latex particles. Functionalized latex particles also included in their shell structure diacetone acrylamide building units to ensure a subsequent crosslinking reaction at room temperature. The commercially used crosslinking agent represented by adipic acid dihydrazide (ADH) or the alternative crosslinking agents represented by poly(amidoamine) (PAMAM) dendrimer and hexaamino-cyclo-triphosphazene (HACTP), respectively, were added in the form of 10 wt.% water solution to the final latex. PAMAM dendrimer and HACTP were chosen as more eco-friendly crosslinkers. The presence of HAACTP and HACTP caused the decrease of flammability of resulting coatings in sense of maximum average rate of heat emission, which was determined by cone-calorimeter combustion.	self-crosslinkin; phosphazene; PAMAM

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