Abstract In this article, a novel and facile method is proposed to synthesize a highly effective carbon-based water dispersible flame retardant. This is the first report of carbon-based highly potent transparent flame retardant, which keeps the colour of the cloth intact. A functionalized flame retardant graphene quantum dots (FR-GQD) as a carbon-based material was synthesized using graphene oxide and phosphorous source through a hydrothermal treatment. As prepared transparent FR-GQD solution coated cotton cloth was found to maintain cloth's original colour. In a flame test, FR-GQD coated cloth emitted little smoke initially and after that, it failed to catch fire for more than 300 s and maintained its initial shape. Whereas the control cloth caught fire and burnt completely within 15 s. Flame retardant efficiency of the FR-GQD coated cloth was confirmed by detail flame tests such as limiting oxygen index (LOI), exposure to high heat flux (∼50 kW/cm2) and turbulent premixed flame at high temperature (∼1400 °C). The strength of FR-GQD coated cloth was determined using tensile strength test. This technique of synthesis and application of this water dispersed FR material may find a general approach towards the practical and eco-friendly application of non-toxic FR-GQD as transparent flame retardant.

中文翻译：

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合成碳基透明高效阻燃剂的新方法

摘要 本文提出了一种新型简便的合成高效碳基水分散阻燃剂的方法。这是碳基高效透明阻燃剂的首次报道，可保持布料的颜色完好无损。使用氧化石墨烯和磷源通过水热处理合成了功能化阻燃石墨烯量子点（FR-GQD）作为碳基材料。发现制备的透明 FR-GQD 溶液涂层棉布保持布的原始颜色。在火焰测试中，FR-GQD涂层布最初几乎不冒烟，之后300多秒未能着火并保持其初始形状。而控制布在 15 秒内起火并完全燃烧。FR-GQD 涂层布的阻燃效率通过详细的火焰测试得到证实，例如极限氧指数 (LOI)、暴露于高热通量 (~50 kW/cm2) 和高温下的湍流预混火焰 (~1400 °C) . FR-GQD 涂层布的强度通过拉伸强度测试来确定。这种水分散 FR 材料的合成和应用技术可能会找到一种通用方法，可以实现无毒 FR-GQD 作为透明阻燃剂的实际和环保应用。