Dyachkova Tatiana P, Khan Yulian A, Burakova Elena A, Galunin Evgeny V, Shigabaeva Gulnara N, Stolbov Dmitry N, Titov Georgy A, Chapaksov Nikolay A, Tkachev Alexey G
Research Department «Technology and Methods of Nanoproducts Manufacturing», Technological Institute, Tambov State Technical University, 106/5, Building 2, Sovetskaya St., 392000 Tambov, Russia.
Department of Organic and Ecological Chemistry, Institute of Chemistry, University of Tyumen, 6 Volodarskogo St., 625003 Tyumen, Russia.
Polymers (Basel). 2023 Mar 16;15(6):1476. doi: 10.3390/polym15061476.
The paper considers the development of fillers representing mixtures of carbon nanotubes and graphene materials (graphene oxide and graphene nanoplatelets) in different mass ratios to modify epoxy resin. The graphene type and content effect on the dispersed phase particle effective sizes-both in aqueous suspensions and the resin-was analyzed. Hybrid particles were characterized by Raman spectroscopy and electron microscopy. The composites containing 0.15-1.00 wt.% CNTs/GO and CNTs/GNPs were thermogravimetrically analyzed, and their mechanical characteristics were determined. SEM images of the composite fracture surfaces were acquired. Optimal dispersions containing 75-100 nm particles were obtained at the CNTs:GO mass ratio of 1:4. It was shown that the CNTs can be located between the GO layers and on the GNP surface. The samples containing up to 0.2 wt.% CNTs/GO (at 1:1 and 1:4 ratios) were stable when heated in air up to 300 °C. For 0.15-0.20 wt.% CNTs/GO (at 1:1 ratio), the tensile strength and modulus of the composite increased by 84-88 and 40%, respectively. The increase in the strength characteristics was found to occur due to the interaction of the filler layered structure with the polymer matrix. The obtained composites can be used as structural materials in different fields of engineering.
本文研究了以不同质量比混合碳纳米管和石墨烯材料（氧化石墨烯和石墨烯纳米片）作为填料来改性环氧树脂的情况。分析了石墨烯类型和含量对水悬浮液及树脂中分散相颗粒有效尺寸的影响。通过拉曼光谱和电子显微镜对混合颗粒进行了表征。对含有0.15 - 1.00 wt.%碳纳米管/氧化石墨烯和碳纳米管/石墨烯纳米片的复合材料进行了热重分析，并测定了它们的力学性能。获取了复合材料断裂表面的扫描电子显微镜图像。在碳纳米管与氧化石墨烯质量比为1:4时，得到了含有75 - 100 nm颗粒的最佳分散体。结果表明，碳纳米管可位于氧化石墨烯层之间及石墨烯纳米片表面。含有高达0.2 wt.%碳纳米管/氧化石墨烯（质量比为1:1和1:4）的样品在空气中加热至300°C时是稳定的。对于0.15 - 0.20 wt.%碳纳米管/氧化石墨烯（质量比为1:1），复合材料的拉伸强度和模量分别提高了84 - 88%和40%。发现强度特性的提高是由于填料层状结构与聚合物基体的相互作用。所获得的复合材料可作为结构材料应用于不同的工程领域。
