聚磷酸铵阻燃聚乙烯的研究.pdfVIP

　　塑 　料 2007 年 　36 卷 　第 3期 聚磷酸铵阻燃聚乙烯的研究 聚磷酸铵阻燃聚乙烯的研究 刘 　渊 ,贾润礼 ,柳学义 (中北大学塑料研究所 , 山西 ,太原 　030051) ( ) ( ) 　　摘要 :通过极限氧指数测试 、力学性能测试研究了聚磷酸铵 A PP 对聚乙烯 PE 的燃烧性能和力学 性能的影响 。结果表明: Ⅱ型 A PP在添加量达到 30% 以后 , PE 的氧指数达到了 22 4 ,可以实现离火后 很快自熄 ;在添加了 A PP后 , PE 的拉伸强度在开始的时候提高 ,当添加量超过 20%后 ,其拉伸强度开始 缓慢降低 ; PE 的缺口冲击强度在添加 A PP后 ,在添加量很低时就产生了大幅度下降。 关键词 :聚乙烯 ;聚磷酸铵 ;极限氧指数 ;力学性能 中图分类号 : TQ325. 12　文献标识码 : A 　文章编号 : 100 1 - 9456 (2007) 03 - 0024 - 03 Amm on ium Polypho spha te Flam eRetarded Polyethy lene L IU Yuan , J IA Runli, L IU Xueyi (R esearch In stitu te of P lastic s,North U n iversity of Ch ina, Taiyuan, Shanxi 030051, Ch ina) 　　A b stract: The influence of ammon ium po lyp ho sp hate on combu stion p erform ance and m echan ical p rop erty of po lyethylene wa s inve stigated by lim ited oxygen index te st and m echan ical p rop erty te st. The lim ited oxygen index of po lyethylene reached 22 4 when the amoun t of ammon ium po lyp ho sp hate reached 30% , and the po lyethylene wa s self extingu ished in stan tly when it wa s moved away from the fire. The ten sile strength of po lyethylene wa s increa sed at first, however, when the amoun t of ammon ium po lyp ho sp hate exceeded 20% , the ten sile strength decrea sed slow ly. The imp act strength of po lyethylene wa s decrea sed obviou sly when ammon ium po lyp ho sp hate added in. Key words:po lyethylene; ammon ium po lyp ho sp hate; lim ited oxyge