Effect of anion of polyoxometalate based organic-inorganic hybrid material on intumescent flame retardant polypropylene
Effect of anion of polyoxometalate based organic-inorganic hybrid material on intumescent flame retardant polypropylene
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DOI：
10.1002/pat.3786
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发表时间：
2016-09
影响因子：
3.4
通讯作者：
Ting Ye;Juan Li
中科院分区：
文献类型：
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作者：
Ting Ye;Juan Li
本文合成了12-钨钴酸基有机-无机杂化材料[Bmim](6)CoW12O40(CoW)，并将其作为增效剂应用于PP/膨胀型阻燃剂(IFR)复合材料中。通过极限氧指数(LOI)、UL-94垂直燃烧试验、热重分析仪(TGA)、锥形量热仪和扫描电子显微镜(SEM)等测试手段对其阻燃性能进行了研究，结果表明，当IFR含量为16wt%、COW含量为1wt%时，PP复合材料达到UL-94 V-0等级，LOI值为28.0。然而，只有当加入不低于25wt%的单一IFR时，PP复合材料才能达到UL-94V-0等级，说明CoW对PP/IFR复合材料具有良好的阻燃协同作用。此外，扫描电子显微镜和锥形量热仪测试表明，奶牛改善了炭化层的质量。由于COW的存在，成炭率也得到了提高。较好的成炭质量和较高的成炭率相结合，使PP/IFR复合材料具有优异的阻燃性能。版权所有(C)2016 John Wiley&Sons，Ltd.
In this work, 12-tungestocobaltic acid based organic-inorganic hybrid material, [Bmim](6)CoW12O40 (CoW) was synthesized and applied as a synergist in polypropylene (PP)/intumescent flame retardant (IFR) composites. The flame retardant properties were investigated by the limiting oxygen index (LOI), UL-94 vertical burning test, thermal gravimetric analyzer (TGA), cone calorimeter and scanning electron microscopy (SEM) etc. The results showed that the PP composites with 16wt% IFR and 1wt% CoW achieves the UL-94 V-0 rating and gets a LOI value 28.0. However, only add no less than 25wt% single IFR, can the PP composites obtain the UL-94V-0 rating, which suggests that CoW has good synergistic effects on flame retardancy of PP/IFR composites. In addition, the SEM and cone calorimeter tests indicated the CoW improves the quality of char layer. The rate of char formation has been enhanced also because of the existence of CoW. It is the combination of a better char quality and a high rate of char formation promoted by CoW that results in the excellent flame retardancy of PP/IFR composites. Copyright (c) 2016 John Wiley & Sons, Ltd.