塑料科技2025，Vol.53Issue(8)：29-34,6.DOI:10.15925/j.cnki.issn1005-3360.2025.08.006
高岭土的有机化改性及其对木塑复合材料耐湿热老化性能的影响
Organic Modification of Kaolin and Its Influence on Hygrothermal Aging Resistance of Wood-plastic Composites
摘要
Abstract
Kaolin(Kaol)was first organically modified with a coupling agent(KH-550),after which organo-kaolin(O-Kaol),wood flour(WF),and recycled low-density polyethylene packaging pellets(R-LDPE)were melt-compounded to produce wood-plastic composites(WPC).FTIR spectroscopy,scanning electron microscopy,and universal testing machines were employed to evaluate the influence of O-Kaol on WPC properties before and after hygrothermal aging.The results show that O-Kaol outperforms untreated Kaol in enhancing WPC performance.As the O-Kaol content increases,the water absorption,color difference,erosion wear mass loss,and loss factor of O-Kaol/WPC first decrease and then increase,whereas the tensile strength,flexural strength,flexural modulus,notched impact strength,and storage modulus first rise and then fall.After hygrothermal aging,all specimens exhibit degraded performance.Overall,the performance loss of O-Kaol/WPC is lower than that of WPC without Kaol or O-Kaol.For O-Kaol/WPC-5,the reductions in tensile strength,flexural strength,flexural modulus,and notched impact strength are 6.3%,8.0%,8.7%,and 13.4%,respectively—representing decrease of 80.9%,37.9%,38.7%,and 62.9%compared with the 18.9%,12.9%,14.2%,and 36.1%decline observed in WPC.These findings demonstrate that O-Kaol significantly improves the hygrothermal aging resistance of WPC.关键词
高岭土/木塑复合材料/湿热老化/冲蚀磨损/性能下降率Key words
Kaolin/Wood-plastic composites/Hygrothermal aging/Erosion wear/Performance degradation rate分类
化学化工引用本文复制引用
刘小忠,刘文浩,王泽龙,李湘..高岭土的有机化改性及其对木塑复合材料耐湿热老化性能的影响[J].塑料科技,2025,53(8):29-34,6.基金项目
湖南省自然科学基金(2024JJ8008) （2024JJ8008）
