紫外光固化聚氨酯丙烯酸酯ZrO2纳米复合涂层的制备和性能研究的中期报告.docx

紫外光固化聚氨酯丙烯酸酯ZrO2纳米复合涂层的制备和性能研究的中期报告 摘要： 本研究旨在制备一种具有优良物理和化学性能的紫外光固化聚氨酯丙烯酸酯（PUA）/ZrO2纳米复合涂层，并研究其结构和性能。 首先，通过控制聚氨酯丙烯酸酯的含量和反应时间，制备了具有不同物理性能的PUA预聚物。然后，将不同含量的ZrO2纳米颗粒掺入PUA预聚物中，并使用紫外线辐射加速固化。 利用傅里叶变换红外光谱、扫描电子显微镜和热重分析等手段对复合涂层进行了表征。结果表明，ZrO2纳米颗粒与PUA预聚物的相容性良好，且纳米颗粒有助于提高复合涂层的耐热性、悬挂性和力学性能。 此外，研究了PUA/ZrO2复合涂层的耐化学性、耐磨性和耐腐蚀性等性能，并与传统PUA涂层进行了比较。结果表明，紫外光固化聚氨酯丙烯酸酯/ZrO2纳米复合涂层具有优异的物理和化学性能，是一种有前途的涂层材料。 关键词：紫外光固化聚氨酯丙烯酸酯；ZrO2纳米颗粒；纳米复合涂层；结构和性能；表征 Abstract: The aim of this study is to prepare a UV-curable polyurethane acrylate (PUA)/ZrO2 nanoparticle composite coating with excellent physical and chemical properties, and investigate its structure and properties. Firstly, PUA prepolymers with different physical properties were prepared by controlling the content and reaction time of PUA. Then, different contents of ZrO2 nanoparticles were added into the PUA prepolymers and the composite coatings were cured by UV radiation. The composite coatings were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy and thermogravimetric analysis. The results showed that ZrO2 nanoparticles were compatible with PUA prepolymer and the nanoparticles could improve the thermal resistance, suspension and mechanical properties of the composite coatings. Furthermore, the chemical resistance, wear resistance and corrosion resistance of the PUA/ZrO2 composite coatings were investigated and compared with traditional PUA coatings. The results showed that the UV-curable PUA/ZrO2 nanoparticle composite coating had excellent physical and chemical properties, and was a promising coating material. Keywords: UV-curable polyurethane acrylate; ZrO2 nanoparticle; nanoparticle composite coating; structure and properties; characterization.