Novel flame-retardant-immobilized and ultraviolet-absorberimmobilized silica nanoparticles

成功地实现了溴系阻燃剂和磷系阻燃剂的固定化。这些阻燃剂-固定化二氧化硅填充的环氧树脂的极限氧指数高于未处理二氧化硅和游离阻燃剂填充的环氧树脂。光稳定剂也被固定在二氧化硅表面。光稳定剂-固定化二氧化硅填充的复合材料具有吸收紫外光的能力。用这些阻燃剂和光稳定剂-二氧化硅填充的聚合物基质中的添加剂在沸水中几乎没有被消除。结果表明纳米二氧化硅对阻燃剂和光稳定剂的固定化具有锚定作用。

The immobilization of bromine flame retardant and phosphorous flame-retardant was successfully achieved. The limiting oxygen index value of epoxy filled with these flame retardant-immobilized silica was higher than that of epoxy resin filled with untreated silica and free flame retardants. Photostabilizer was also immobilized onto silica surface. The composites filled with the photostabilizer-immobilized silica has an ability to absorb UV light. The elimination of additives from polymer matrices filled with these flame retardant-and photostabilizer-silica into boiling water was hardly observed. The results clearly show the anchor effect of silica nanoparticle for the immobilization of flame retardant and photostabilizer.