MAH原位接枝HDPE及其对HDPE/N-PCB复合材料力学性能的影响  

Study on the Mechanical Properties of HDPE/Nonmetals Recycled from Waste PCB Composites Compatibilized by MAH Grafted HDPE in Situ

作　　者：欧阳杰[1] 刘韬[1] 李渊[1] 王曦[1] 孟勇[2] 苏胜培[1,2] 

机构地区：[1]湖南师范大学资源精细化与先进材料湖南省普通高校重点实验室,湖南长沙410081 [2]湖南师范大学资源循环综合技术研究中心,湖南长沙410081

出　　处：《精细化工中间体》2011年第6期61-65,68,共6页Fine Chemical Intermediates

基　　金：湖南师范大学潇湘学者启动资金资助课题(化050613)

摘　　要：将马来酸酐(MAH)、过氧化二异丙苯(DCP)、苯乙烯(St)、高密度聚乙烯(HDPE)和废印刷电路板非金属粉末(N-PCB)直接反应挤出,制备了HDPE/N-PCB复合材料,并研究了MAH用量对HDPE/N-PCB复合材料力学性能影响。对HDPE/N-PCB复合材料抽提残留物的红外分析结果表明,在HDPE/N-PCB复合材料中加入DCP、St、MAH之后,通过DCP引发HDPE原位接枝MAH,并随即与N-PCB粉末表面的羟基反应而起到了桥联作用,可改善HDPE基体与N-PCB粉末两相的界面作用。MAH反应增容后的HDPE/N-PCB复合材料与增容前相比,其拉伸强度、弯曲强度、缺口冲击强度及断裂伸长率的最大增幅分别为36%、12%、208%和262%。The maleic anhydride（MAH）,dicumyl peroxide（DCP）,styrene（St）,high density polyethylene（HDPE） and nonmetals recycled from waste PCB（N-PCB） were reacted together to prepare the HDPE/N-PCB composites by directly reactive extrusion,and the effect of MAH dosage on the mechanical properties of HDPE/N-PCB composites was investigated.The FT-IR analysis and extraction experiment showed that when DCP,St and MAH were added into the HDPE/N-PCB composites,the DCP induced the graft of HDPE with MAH in situ,followed by reaction with the hydroxyl on the N-PCB powder surface.This reaction played a bridging role and could improve the interface compatibility between HDPE matrix and the N-PCB powder.The maximum increment of tensile strength,flexural strength,notched impact strength and elongation at break of the HDPE/N-PCB composites were 36%,12%,208% and 262%,respectively,compared to the HDPE/N-PCB composites without MAH.

关 键 词：高密度聚乙烯(HDPE) 废PCB非金属粉末(N-PCB) 马来酸酐(MAH) 反应增容 

分 类 号：TQ325[化学工程—合成树脂塑料工业]