杉木、马尾松木粉增强高密度聚乙烯复合材料的老化性能  

Aging Properties of HDPE Composites Reinforced by Cunninghamia lanceolate and Pinus massoniana Wood Flour

作　　者：曹岩[1] 徐海龙[1] 郝建秀 王海刚[2] Cao Yan;Xu Hailong;Hao Jianxiu;Wang Haigang(Guizhou Minzu University,Guiyang 550025,P.R.China;Key Laboratory of Bio-based Material Science&Technology,Ministry of Education,Northeast Forestry University)

机构地区：[1]贵州民族大学,贵阳550025 [2]生物质材料科学与技术教育部重点实验室(东北林业大学)

出　　处：《东北林业大学学报》2018年第10期78-81,97,共5页Journal of Northeast Forestry University

基　　金：国家自然科学基金项目(3146017;贵州省科学技术基金计划项目(黔科合J字[2015]2075号);贵州省教育厅自然科学研究项目(黔教合KY字[2016]003;黔教合KY字[2017]003;黔教合KY字[2017]136)

摘　　要：为了有效利用贵州省主要森林采伐和加工树种的木材加工剩余废料和废旧塑料,采用挤出成型法分别制备了杉木和马尾松木粉增强高密度聚乙烯(HDPE)复合材料;经过12个月的室内和户外的自然老化,对比老化前后复合材料的材色、密度、弯曲、拉伸、冲击等物理和力学性能,并分析了动态力学性能。试验结果表明:室内老化使复合材料的材色变暗且向红色和黄色方向变化,户外老化使复合材料的材色变亮且向绿色和蓝色方向变化。复合材料的拉伸性能受老化影响较为显著,户外的环境加快了木塑复合材料的老化降解速率。杉木/HDPE复合材料的耐老化性能均优于马尾松/HDPE复合材料。In order to effectively use wood processing residual waste of the main species of forest harvesting and processing in Guizhou Province and waste plastic,the high density polyethylene(HDPE)composites reinforced by Cunninghamia lanceolate and Pinus massoniana wood flour were prepared by extrusion molding,respectively.After 12 months’indoor and outdoor natural aging,surface color,density,bending,tensile,impact and other physical and mechanical properties before and after aging were compared,and dynamic mechanical properties of the composites were also analyzed.The indoor aging made the surface of the composites dim lightness,and colors moved in the direction of red and yellow,and outdoor aging made the surface of the composites lightness to bleach,and colors moved in the direction of green and blue.The tensile properties of composites were considerably affected by aging.Outdoor environment raised the aging decomposition rate of the wood plastic composites.Aging resistance of C.lanceolate/HDPE composites were better than that of P.massoniana/HDPE composites.

关 键 词：杉木 马尾松 木塑复合材料 老化 物理性能 力学性能 

分 类 号：S788[农业科学—林学]