The CNT network and interphase in nanocomposites have not been studied quantitatively enough in the literature. The AFM peak force quantitative nanomechanics mapping technique was applied to polymer nanocomposites (PNC) reinforced with 0.5 wt% MWCNT and CNT buckypaper (BP). The DMA, BJH, SEM, and tension stress-strain curves were studied. BP is heterogeneous due to its local porous structure and nonuniform resin impregnation. The Interphase thickness for the CNT network is 26.8 ± 7 and 17.4 ± 5.1 nm in BP PNC and 0.5 wt% MWCNT PNC. The interphase thickness between infiltrated BP and polymer is ∼40 ± 4 nm. The CNT network sizes in BP PNC (108.5 ± 21.3 and 45.4 ± 10.3 nm) are influenced by the size of inter-bundle and intra-bundle pores. The interphase thickness normalized to the CNT network size is at least ∼7 times higher in BP PNC compared to 0.5 wt% MWCNT PNC, confirming pronounced interphase effects in the former. The Kolarik, Quali, and Takayanagi models for nanocomposite moduli were evaluated.

纳米复合材料中的 CNT 网络和中间相在文献中没有得到足够的定量研究。将 AFM 峰值力定量纳米力学映射技术应用于用 0.5 wt% MWCNT 和 CNT 巴克纸 (BP) 增强的聚合物纳米复合材料 (PNC)。研究了 DMA、BJH、SEM 和拉伸应力-应变曲线。由于其局部多孔结构和不均匀的树脂浸渍，BP 是异质的。在 BP PNC 和 0.5 wt% MWCNT PNC 中，CNT 网络的界面厚度为 26.8 ± 7 和 17.4 ± 5.1 nm。渗透的 BP 和聚合物之间的界面厚度为~40 ± 4 nm。BP PNC 中的 CNT 网络尺寸（108.5 ± 21.3 和 45.4 ± 10.3 nm）受束间和束内孔尺寸的影响。与 0 相比，BP PNC 中归一化到 CNT 网络尺寸的界面厚度至少高约 7 倍。5 wt% MWCNT PNC，证实了前者明显的相间效应。评估了纳米复合材料模量的 Kolarik、Quali 和 Takayanagi 模型。