回收PE地膜残膜在高性能沥青路面新材料中应用  

Research in Application of Recycled PE Mulching Films for New Material of High Performance Asphalt Pavement

作　　者：李攀 李东峰 陆新焱 彭麒桦 卢波[3] 季君晖[3] LI Pan;LI Dongfeng;LU Xinyan;PENG Qihua;LU Bo;JI Junhui(Henan Jixi Expressway Construction Co,Ltd,Zhengzhou 450000,China;Shenzhen Tiankunyuan Environmental Protection Technology Co,Ltd,Shenzhen 518000,China;National Engineering Research Center for Engineering Plastics,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]河南省机西高速公路建设有限公司,郑州450000 [2]深圳市天坤元环保科技有限公司,广东深圳518000 [3]中国科学院理化技术研究所工程和生态塑料国家工程研究中心,北京100190

出　　处：《中国塑料》2021年第8期84-87,共4页China Plastics

摘　　要：以回收聚乙烯(PE)地膜残膜为原料,通过与聚醋酸乙烯、石油树脂等材料复合,制备了新型路面沥青高分子改性剂。通过对改性剂和改性沥青混合料性能进行测试,结果表明,该PE改性剂的结晶度降低,低温柔韧性和抗冲击性能提高,具有较高的熔体流动速率;其与砂石等无机材料的黏合性能也较PE材料显著提高;该PE改性剂可以在拌合楼直接与石料混合搅拌,相对传统苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS)沥青改性技术,达到沥青混合料高低温性能的双性提升,避免SBS硫化过程的二氧化硫污染,提高公路高低温耐车辙性能,实现低品位塑料废弃物变废为宝,对于推动环境的可持续发展及绿色交通建设具有重大的意义。A novel type of pavement asphalt polymeric modifier was prepared through mixing recycled polyethylene mulch film residue with poly(vinyl acetate)and petroleum resin.The use of the modifier reduced the crystallinity of PE and im‐proved its low temperature flexibility,impact resistance,high melt flow rate,and adhesive performance with sand inor‐ganic materials.This modifier can be directly mixed and stirred with stone in the mixing plant.Compared to the tradition‐al SBS asphalt modifier,the modifier developed by this work can improve the high and low temperature performance of asphalt mixture,avoid the sulfur dioxide pollution in the SBS vulcanization process,improve the high and low tempera‐ture rutting resistance performance of highway,and realize the transformation of low-grade plastic waste to treasure.It is of great significance to promote the sustainable development of the environment and the construction of green traffics.

关 键 词：回收聚乙烯地膜 聚乙烯路面沥青改性剂 路面沥青改性混合料 

分 类 号：TQ317.9[化学工程—高聚物工业]