Characterization of mechanical properties of epoxy/nanohybrid composites by nanoindentation利用纳米压痕表征环氧/纳米杂化复合材料的力学性能

Abstract摘要

Carbon nanofiber–MoS2 nanohybrids were fabricated and incorporated into an epoxy coating to improve its mechanical response. Microscopy shows MoS2 nanosheets wrapped around the carbon nanofibers and dispersed through the matrix. Nanoindentation was used to compare modulus, hardness, and creep resistance among the hybrid, MoS2-modified, and neat epoxy systems. The hybrid coating provides the strongest overall improvement: the wrapped nanosheets enlarge the contact area and reduce interfacial friction, while the stiff carbon nanofibers contribute to hardness and wear resistance.

本研究制备了碳纳米纤维—MoS₂ 纳米杂化结构，并将其加入环氧涂层以改善力学性能。显微结构表明，MoS₂ 纳米片包覆在碳纳米纤维表面，并较均匀地分散于基体中。研究利用纳米压痕比较杂化涂层、MoS₂ 改性涂层和纯环氧体系的弹性模量、硬度与抗蠕变性能。结果显示，杂化涂层的综合提升最明显：包覆结构增大接触面积并降低界面摩擦，高硬度碳纳米纤维则有助于提高硬度和耐磨性。