Abstract For hindered phenol (HP)/polymer-based hybrid damping materials, the damping properties are greatly affected by the structure variation of HPs. However, the unclear relationship between them limits the exploitation of such promising materials. Therefore, three HPs with different chain polarity were synthesized to explore the relationship in this paper. The structures of the HPs were firstly confirmed by Nuclear Magnetic Resonance Spectrum, Fourier Transform Infrared Spectroscopy (FT-IR) and X-ray Diffraction (XRD). For further prepared HP/polyurethane hybrids, FT-IR and XRD were also adopted to confirm the hydrogen bonding interactions and micromorphologies. And, Molecular dynamics simulation was further used to characterize the effects of polarity variation on the hydrogen bonding interactions and chain packing of the hybrids in a quantitative manner. Then, combined with dynamic mechanical analysis, the relationship between the chain polarity variation of the hindered phenols and the damping properties was established.

中文翻译：

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受阻酚链极性对聚合物基杂化材料阻尼性能的影响：分子机制的洞察

摘要 对于受阻酚（HP）/聚合物基混合阻尼材料，其阻尼性能受受阻酚结构变化的影响很大。然而，它们之间不明确的关系限制了这种有前途的材料的开发。因此，本文合成了三个具有不同链极性的 HPs 来探索它们之间的关系。HPs 的结构首先通过核磁共振光谱、傅里叶变换红外光谱 (FT-IR) 和 X 射线衍射 (XRD) 证实。对于进一步制备的 HP/聚氨酯杂化物，还采用 FT-IR 和 XRD 来确认氢键相互作用和微观形貌。和，进一步使用分子动力学模拟来定量表征极性变化对杂化物的氢键相互作用和链堆积的影响。然后，结合动态力学分析，建立了受阻酚链极性变化与阻尼性能之间的关系。