纳米填料对丙烯腈-丁二烯-苯乙烯纳米复合材料物理性能的影响：石墨烯纳米片与多壁碳纳米管的比较

Effects of the Nanofillers on Physical Properties of Acrylonitrile-Butadiene-Styrene Nanocomposites: Comparison of Graphene Nanoplatelets and Multiwall Carbon Nanotubes.

作者信息

Dul Sithiprumnea, Pegoretti Alessandro, Fambri Luca

机构信息

Department of Industrial Engineering and INSTM Research Unit, University of Trento, Via Sommarive 9, 38123 Trento, Italy.

出版信息

Nanomaterials (Basel). 2018 Aug 29;8(9):674. doi: 10.3390/nano8090674.

The effects of carbonaceous nanoparticles, such as graphene (GNP) and multiwall carbon nanotube (CNT) on the mechanical and electrical properties of acrylonitrile⁻butadiene⁻styrene (ABS) nanocomposites have been investigated. Samples with various filler loadings were produced by solvent free process. Composites ABS/GNP showed higher stiffness, better creep stability and processability, but slightly lower tensile strength and electrical properties (low conductivity) when compared with ABS/CNT nanocomposites. Tensile modulus, tensile strength and creep stability of the nanocomposite, with 6 wt % of GNP, were increased by 47%, 1% and 42%, respectively, while analogous ABS/CNT nanocomposite showed respective values of 23%, 12% and 20%. The electrical percolation threshold was achieved at 7.3 wt % for GNP and 0.9 wt % for CNT. The peculiar behaviour of conductive CNT nanocomposites was also evidenced by the observation of the Joule's effect after application of voltages of 12 and 24 V. Moreover, comparative parameters encompassing stiffness, melt flow and resistivity were proposed for a comprehensive evaluation of the effects of the fillers.

已对碳质纳米颗粒，如石墨烯（GNP）和多壁碳纳米管（CNT）对丙烯腈-丁二烯-苯乙烯共聚物（ABS）纳米复合材料的机械和电学性能的影响进行了研究。通过无溶剂工艺制备了具有不同填料含量的样品。与ABS/CNT纳米复合材料相比，ABS/GNP复合材料表现出更高的刚度、更好的蠕变稳定性和加工性能，但拉伸强度和电学性能（低导电性）略低。含6 wt% GNP的纳米复合材料的拉伸模量、拉伸强度和蠕变稳定性分别提高了47%、1%和42%，而类似的ABS/CNT纳米复合材料的相应值分别为23%、12%和20%。GNP的导电渗流阈值为7.3 wt%，CNT的为0.9 wt%。在施加12 V和24 V电压后观察到焦耳效应，这也证明了导电CNT纳米复合材料的特殊行为。此外，还提出了包括刚度、熔体流动和电阻率在内的比较参数，以全面评估填料的影响。