新型二茂铁基聚合物对低密度聚乙烯热分解性能的影响  

Effect of a Novel Ferrocene- containing Polymer on Thermal Degradation Property of Low Density Polyethylene

作　　者：徐启奎[1] 缪飞[1] 蔡靖[1] 张全通[1] 王鹏吉[1] 胡小平[1] 

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010

出　　处：《西南科技大学学报》2015年第3期6-10,98,共6页Journal of Southwest University of Science and Technology

基　　金：国家自然科学基金(51373140)

摘　　要：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 microscope（ 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. However,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.

关 键 词：聚乙烯 PCFEDA IFR 热分解性能 

分 类 号：TQ325.121[化学工程—合成树脂塑料工业]