WPP/NWPCB/POE复合材料的制备及其热解特性  

Pyrolysis characteristics and preparation of WPP/NWPCB/POE composites

作　　者：陈义忠[1] 吴曼[1] 谢恒来 刘新民[1] 郭庆杰[1] 

机构地区：[1]青岛科技大学化工学院清洁化工过程山东省高校重点实验室,山东青岛266042

出　　处：《化工学报》2015年第12期5163-5170,共8页CIESC Journal

基　　金：国家高技术研究发展计划项目(SS2012AA062613);山东省科技攻关项目(2008GG10006010)~~

摘　　要：以废旧汽车保险杠(WPP)为基体,废弃线路板非金属粉(NWPCB)为填料,通过熔融共混的方法制备了系列WPP/NWPCB复合材料。在此基础上,用乙烯-辛烯共聚物(POE)和马来酸酐接枝聚丙烯(PP-g-MAH)对复合材料进行了协同改性,以增强复合材料的性能。力学性能测试和冲击断面微观形貌分析表明,POE显著提高了WPP/NWPCB复合材料的韧性,当POE用量为15 g·(100 g)-1时,冲击强度较改性前提高129%;PP-g-MAH能够有效改善复合材料中填料与基体相容性,当添加量为9 g·(100 g)-1时,复合材料的机械性能达到最佳,冲击强度、弯曲强度和拉伸强度较改性前分别提高7.8%、23.4%和20%。通过热重-红外联用研究了WPP/NWPCB/POE复合材料的热解过程,结果表明,复合材料在热解过程中除产生烷烃、烯烃及CO2外,还产生了少量的苯酚类芳香族化合物与HBr等有害气体,同时NWPCB填料的添加提高了复合材料中WPP的热稳定性。With the waste polypropylene（WPP） as matrix and the modificated non-metallic powder from waste printed circuit boards（NWPCB） as filler, the WPP/NWPCB composites were prepared by means of the melt blending. To enhance the mechanical characters, the WPP/NWPCB composites were synergistically modified by ethylene octene copolymer（POE） and maleic anhydride grafted polypropylene（PP-g-MAH）. The mechanical properties and morphology analysis showed that POE greatly improved the impact strength of WPP/NWPCB composite materials. When the content of POE was 15 g·（100 g）-1, the impact strength of WPP/NWPCB composites was increased by 129%. The interface bonding strength between filler and matrix was improved with modification by 9 g·（100 g）-1 PP-g-MAH. The impact strength, tensile strength and flexural strength were increased by 7.8%, 23.4% and 20% respectively. The pyrolysis characteristics of WPP/NWPCB/POE composite materials were investigated by means of TGA-FTIR at nitrogen atmosphere. It indicated that the heat stability of WPP material in the composites was improved by the addition of NWPCB. The alkanes, olefins and CO2 were released during the pyrolysis process of WPP/NWPCB composites, whereas a small amount of harmful gas such as phenol aromatic compounds and hydrogen bromide was also produced.

关 键 词：废弃线路板非金属粉 弹性体 复合材料 机械性能 热解 

分 类 号：X783.2[环境科学与工程—环境工程]