摘要
Abstract
As an important ceramic material,alumina is widely used in high-performance composites,but its inherent brittleness and poor interface compatibility limit performance improvement.In this study,a mechanochemical modification method was used to control the crystal structure,surface activity and dispersion of alumina through high-energy ball milling and surface activation treatment,and the interface bonding strength between alumina and the polymer matrix was significantly improved.The influence of modification process parameters on the physical and chemical properties of alumina was systematically studied,and the mechanism of mechanochemical action was revealed through XRD,SEM,FTIR and other characterization methods.When the modified alumina is applied to epoxy resin and polypropylene composites,its tensile strength and impact toughness are increased by 45%and 60%respectively,and the thermal stability is significantly improved.This research provides new ideas for the development of high-performance alumina composites and has important application value in electronic packaging,aerospace and other fields.关键词
氧化铝/机械化学改性/复合材料/界面性能Key words
alumina/mechanochemical modification/composites/interfacial properties分类
化学化工
