A novel diamine containing naphthalene and 1,2,3-triazole was synthesized by click reaction in the presence of Cu (I) catalyst. The synthesized diamine reacts with commercially available dianhydride and zinc oxide (ZnO) to form polyimide (PI) nanocomposites by a conventional two-step method. The structure of the monomers and polymers was characterized by Fourier transform infrared and proton nuclear magnetic resonance spectra. The morphology of the PI and PI/ZnO nanocomposite films was investigated by scanning electron microscopy and X-ray diffraction analysis. Meanwhile, due to the presence of a naphthalene side group, PI and PI/ZnO nanocomposite films possess high thermal stability, with a glass transition temperature over 259°C and a decomposition temperature with 5% weight loss over 501°C under nitrogen atmosphere. Also, low moisture absorption (0.28%) and good optical transparency were evident. The hybrid films possessed good mechanical properties, with a tensile strength of 112–127 MPa, an elongation at break of 10–15%, and a tensile modulus of 2.8–3.2 GPa.

中文翻译：

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含萘和1,2,3-三唑环的聚酰亚胺/氧化锌纳米复合材料的研究

在 Cu (I) 催化剂存在下，通过点击反应合成了一种含有萘和 1,2,3-三唑的新型二胺。合成的二胺通过常规的两步法与市售的二酐和氧化锌 (ZnO) 反应形成聚酰亚胺 (PI) 纳米复合材料。单体和聚合物的结构通过傅里叶变换红外光谱和质子核磁共振光谱表征。通过扫描电子显微镜和 X 射线衍射分析研究了 PI 和 PI/ZnO 纳米复合薄膜的形貌。同时，由于萘侧基的存在，PI和PI/ZnO纳米复合薄膜具有较高的热稳定性，在氮气氛下，玻璃化转变温度超过259℃，分解温度超过501℃，重量损失5%。还，低吸湿性 (0.28%) 和良好的光学透明度是显而易见的。混合薄膜具有良好的机械性能，拉伸强度为 112-127 MPa，断裂伸长率为 10-15%，拉伸模量为 2.8-3.2 GPa。