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Study on preparation and fire-retardant mechanism analysis of intumescent flame-retardant coatings

机译：膨胀型阻燃涂料的制备及阻燃机理分析研究

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An intumescent flame-retardant coating was prepared by unsaturated polyester resin and epoxy resin as two-component matrix resins, ammonium polyphosphate (APP) as acid source, melamine (Mel) as the blowing agent and pentaerythritol (PER) as carbon agent, expandable graphite as synergistic agent, adding titanium dioxide (TiO2), solvent and other assistants. Results showed that such a coating had excellent physical–chemical properties. When the thickness of the coating on the wood matrix reached 2.0 mm, the limit of fire-endurance could get to 210 min. And the various component thermal characteristics, decompose processes and interactions of the flame-retardant coating system were investigated by DSC and TGA. The contribution of phosphorus to the formation of the final charring layer and their morphological structures was studied by SEM, XRD and FTIR. On the basis, the flame-retardant mechanism of the intumescent flame-retardant coating was systematically investigated.
机译：以不饱和聚酯树脂和环氧树脂为两组分基体树脂，聚磷酸铵（APP）为酸源，三聚氰胺（Mel）为发泡剂，季戊四醇（PER）为碳剂，可膨胀石墨制备膨胀型阻燃涂料。作为增效剂，添加二氧化钛（TiO2），溶剂和其他助剂。结果表明，这种涂料具有优异的物理化学性能。当木质基体上的涂层厚度达到2.0 mm时，耐火极限可达到210分钟。并通过DSC和TGA研究了阻燃涂料体系的各种组分热特性，分解过程和相互作用。通过SEM，XRD和FTIR研究了磷对最终炭化层形成及其形态结构的贡献。在此基础上，系统研究了膨胀型阻燃涂料的阻燃机理。

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