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Effective Biobased Phosphorus Flame Retardants from Starch-Derived bis-25-(Hydroxymethyl)Furan

机译:淀粉衍生的bis-25-(羟甲基)呋喃的有效生物基磷阻燃剂

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摘要

A series of biobased phosphorus flame retardants has been prepared by converting starch-derived -2,5-(hydroxymethyl)furan to the corresponding diacrylate followed by Michael addition of phosphite to generate derivatives with phosphorus moieties attached via P–C bonds. All compounds behave as effective flame retardants in DGEBA epoxy resin. The most effective is the DOPO derivative, 2,5-di[(3-dopyl-propanoyl)methyl]furan. When incorporated into a DGEBA blend at a level to provide 2% phosphorus, a material displaying a LOI of 30, an UL 94 rating of V0 and a 40% reduction in combustion peak heat release rate compared to that for resin containing no additive is obtained. The analogous compounds generated from bisphenol A and tetrabromobisphenol A exhibit similar flame-retarding properties.
机译:通过将淀粉衍生的-2,5-(羟甲基)呋喃转化为相应的二丙烯酸酯,然后通过亚磷酸酯的迈克尔加成反应生成一系列具有磷基的磷基阻燃剂,从而制备了一系列生物基磷系阻燃剂。所有化合物在DGEBA环氧树脂中均表现为有效的阻燃剂。最有效的是DOPO衍生物2,5-二[(3-二甲基-丙酰基)甲基]呋喃。与不含添加剂的树脂相比,当将其掺入DGEBA共混物中的磷含量为2%时,可获得LOI为30,UL 94评级为V0且燃烧峰值放热率降低40%的材料。 。由双酚A和四溴双酚A生成的类似化合物具有相似的阻燃特性。

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