西华大学学报（自然科学版）2025，Vol.44Issue(6)：59-69,11.DOI:10.12198/j.issn.1673-159X.5283
基于多尺度结构与界面设计的热塑性聚氨酯纳米复合材料制备与性能研究
Preparation and Performance of Thermoplastic Polyurethane Nanocomposites Based on Multi-scale Structure and Interface Design
摘要
Abstract
The development of miniaturization,intelligence and high integration of electronic compon-ents urgently requires packaging materials with efficient thermal management and thermal conductivity per-formance.In order to improve the mechanical and thermal conductivity of thermoplastic polyurethane(TPU),Al2O3/MWCNTs/TPU nanocomposites were prepared using TPU as matrix and Al2O3 and MW-CNTs as nano-fillers based on multi-scale structure and interface design.The microstructure,mechanical properties,heat resistance performance and thermal conductivity of the synthesized filler and TPU compos-ites were investigated.FTIR proved that hydroxylation modification of Al2O3,amination modification,acidification of MWCNTs,and amide bonding of Al2O3/MWCNTs was successful.The results of POM and FESEM analysis show that the dispersion of the modified fillers in the matrix is relatively uniform,and the interaction between Al2O3-MWCNTs could be seen in the ternary nanocomposites.The best mechanical properties of Al2O3/TPU nanocomposites were obtained at 5%filler content,and the best values of MW-CNTs/TPU and Al2O3/MWCNTs/TPU nanocomposites were obtained at 0.5%filler content.Moreover,the mechanical properties of ternary nanocomposites were significantly improved compared with binary nano-composites.TGA analysis results show that the thermal stability of the nanocomposites is greatly improved compared with that of pure TPU.Thermal conductivity analysis results show that the thermal conductivity of nano-composites increased by 19.1%after the addition of modified Al2O3 and 95.1%after the addition of modified MWCNTs,while the thermal conductivity of ternary nano-composites increases by 124.6%com-pared with pure TPU under the same filler content.关键词
热塑性聚氨酯(TPU)/氧化铝(Al2O3)/多壁碳纳米管(MWCNTs)/纳米复合材料/力学性能/导热性能Key words
thermoplastic polyurethane(TPU)/Alumina(Al2O3)/multiwalled carbon nanotubes(MWCNTs)/nanocomposite material/mechanical properties/thermal conductivity分类
化学化工引用本文复制引用
张迅韬,蔡旭光,魏聪,杨尚科,蔺海兰,李鑫康,赵威,敬思奕,金彤彤,卞军..基于多尺度结构与界面设计的热塑性聚氨酯纳米复合材料制备与性能研究[J].西华大学学报（自然科学版）,2025,44(6):59-69,11.基金项目
教育部春晖计划合作项目(Z2023XXX,Z2017070) （Z2023XXX,Z2017070）
四川省大学生创新创业训练项目S202110650004,S202110650005) （）
西华大学Interface创新研究工作室重点建设项目 （）
西华大学西华杯大学生创新创业训练项目(xhb2023067,xhb2023068). （xhb2023067,xhb2023068）
