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首页> 美国卫生研究院文献>Polymers >Preparation and Mechanism of Flame-Retardant Cotton Fabric with Phosphoramidate Siloxane Polymer through Multistep Coating
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Preparation and Mechanism of Flame-Retardant Cotton Fabric with Phosphoramidate Siloxane Polymer through Multistep Coating

机译：通过多步涂层用氨基甲酰胺硅氧烷聚合物的阻燃棉织物的制备及机理

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摘要

To improve the water solubility of phosphoramidate siloxane and decrease the amount of flame-retardant additives used in the functional coating for cotton fabrics, a water-soluble phosphoramidate siloxane polymer (PDTSP) was synthesized by sol-gel technology and flame-retardant cotton fabrics were prepared with a multistep coating process. A vertical flammability test, limited oxygen index (LOI), thermogravimetric analysis, and cone calorimetry were performed to investigate the thermal behavior and flame retardancy of PDTSP-coated fabrics. The coated cotton fabrics and their char residues after combustion were studied by attenuated total reflection infrared spectroscopy (FTIR-ATR), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). All results presented that PDTSP-coated cotton fabrics had good flame retardancy and char-forming properties. PDTSP coating was demonstrated to posess gas-phase flame-retardant mechanism as well as a condensed phase flame-retardant mechanism, which can be confirmed by thermogravimetric analysis-Fourier transform infrared spectroscopy (TG-IR) and cone calorimetry test. Also, the preparation process had little effect on the tensile strength of cotton fabrics, although the air permeability and whiteness had a slight decrease. After different washing cycles, the coated samples still maintained good char-forming properties.
机译：为了改善氨基甲酰胺硅氧烷的水溶性并降低用于棉织物的功能涂层中使用的阻燃添加剂的量，通过溶胶 - 凝胶技术合成了水溶性氨基膦酸硅氧烷聚合物（PDTSP），并通过溶胶 - 凝胶技术合成和阻燃棉织物用多步涂层制备。进行垂直易燃性试验，有限的氧指数（LOI），热重分析和锥形量热法，以研究PDTSP涂层织物的热行为和阻燃性。通过减弱的总反射红外光谱（FTIR-ATR），扫描电子显微镜（SEM）和X射线光电子体光谱（XPS）研究燃烧后涂覆的棉织物及其Char残留物。所有结果均呈现，PDTSP涂层棉织物具有良好的阻燃性和炭状性能。 PDTSP涂层被证明于支气气相阻燃机构以及冷凝相阻燃机制，可以通过热重分析 - 傅立叶变换红外光谱（TG-IR）和锥形量热试验来证实。此外，制备方法对棉织物的拉伸强度几乎没有影响，尽管透气性和白度略有降低。在不同的洗涤循环之后，涂覆的样品仍保持良好的炭状性能。

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