以二茂铁基聚合物(PCFEDA)、膨胀型阻燃剂(IFR)和IFR/PCFEDA复合体系对低密度聚乙烯(LDPE)进行改性,通过热重分析( TGA)研究了 PCFEDA, IFR 和 IFR/PCFEDA 对 LDPE 热分解性能的影响. 结果表明,随着PCFEDA添加量的增加,PCFEDA/LDPE复合材料的最大热分解速率不断降低,残炭率越来越高. IFR可有效抑制LDPE的热降解过程,随着PCFEDA的加入,IFR/PCFEDA/LDPE复合材料热分解有一定的推迟. 复合材料在空气中燃烧后残炭的扫描电子显微镜( scanning electron microscope ,SEM)图片显示,PCFEDA/LDPE复合材料形成了非常致密的炭层,IFR/LDPE复合材料的残炭具有明显的发泡现象,而IFR/PCFEDA/LDPE复合材料残炭的发泡现象则不明显,其原因可能是PCFEDA的催化降解作用防止了发泡炭层的生长.%A novel Ferrocene -containing polymer ( PCFEDA ) , Intumescent flame retardant ( IFR ) and IFR/PCFEDA were used to modify low density polyethylene (LDPE).The effects of PCFEDA, IFR and PCFEDA/PE on decomposition property of LDPE were investigated by Thermogravimetric Analysis ( TGA) . The results show that the largest thermal degradation rate of PCFEDA /LDPE composites decreases and more char forming with increase of PCFEDA loading .IFR is effective for inhibition of degradation of LDPE and PCFEDA can delay the decomposition of IFR/PCFEDA/LDPE composites .The scanning electron micro-scope (SEM) micrographs of the char residues of various composites after combustion in air show that a compact structure was formed by PCFEDA/LDPE and a foaming char was observed from IFR/LDPE.How-ever, the char foaming of IFR/PCFEDA/LDPE composite was not obvious .The reason may be due to the catalyzing degradation effect of PCFEDA in earlier stage which prevents the growth of foaming char .
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