一步成型法制脂塑木复合板材工艺探究  

Process Exploration of Fat-plastic-wood Composite Panels by One-step Forming Method

作　　者：胡建东 殷晓飞 吴丹 黄莹辰 曾浩宇 林伟[1] HU Jiandong;YIN Xiaofei;WU Dan;HUANG Yingchen;ZENG Haoyu;LIN Wei(School of Resources and Environmental Engineering,Jiangsu University of Technology,Changzhou 213001,China;Changzhou Houde Renewable Resources Technology Co.,Ltd.,Changzhou 213002,China)

机构地区：[1]江苏理工学院资源与环境学院,江苏常州213001 [2]常州厚德再生资源科技有限公司,江苏常州213002

出　　处：《塑料科技》2025年第1期115-121,共7页Plastics Science and Technology

基　　金：江苏省高校自然科学研究重大项目(21KJA610004)。

摘　　要：研究旨在开发一步成型法制备脂塑木复合板材的工艺。以废弃印刷线路板(WPCB)为原料,通过非金属筛分、物料混合、挤出成型等工艺,制备脂塑木复合型材。中试最佳的物料配方为粒径0.125~0.150 mm的非金属粉235 kg、高密度聚乙烯(HDPE)新料105.0 kg、HDPE回收料157.5 kg、木粉465 kg、马来酸酐接枝聚乙烯63 kg和二元羧酸脂肪醇酯20 kg;混合后通过挤出机机筒加热、螺杆剪切得到热熔物料,热熔物料经合流芯进入模具挤出成型,最后经切割、冷却定型24 h,得到型材,测定其性能。中试生产板材最佳最小集中载荷保持在3100 N以上,弯曲模量大于3700 MPa,吸水率小于1%。研究为回收废弃印刷线路板非金属组分资源化利用提供了简单高效方法,在处理废弃印刷线路板非金属组分的同时产生经济效益,实现对废弃印刷线路板非金属组分的资源化利用。The study aims to develop a one-step forming method for preparing wood-plastic composite boards.Using waste printed circuit boards(WPCB)as raw materials,wood-plastic composite profiles are prepared through processes such as non-metal screening,material mixing,and extrusion molding.The best material formulation for the pilot test was 235 kg of non-metallic powder with particle size of 0.125~0.150 mm,105.0 kg of new HDPE,157.5 kg of recycled HDPE,465 kg of wood flour,63 kg of maleic anhydride grafted polyethylene,and 20 kg of dibasic carboxylic acid fatty alcohol ester.After mixing,the hot-melt material was obtained by extruder barrel heating and screw shearing,and the hot-melt material entered into the mould for extrusion moulding through the merging core.Finally,the profile was obtained by cutting,cooling and shaping for 24 h,and its properties were determined.The optimum minimum concentrated load of the pilot-produced panel was kept above 3100 N,the bending modulus was more than 3700 MPa,and the water absorption rate was less than 1%.The research in this paper provides a simple and efficient method for recycling the non-metallic components of WPCB for resource utilization,and generates economic benefits while processing the non-metallic components of WPCB,and realizes the resource utilization of the non-metallic components of WPCB.

关 键 词：废弃印刷线路板 非金属粉 一步成型 复合板材 资源化利用 

分 类 号：X799[环境科学与工程—环境工程]