【摘要】 为提高材料表面防结冰性能,同时满足航空航天轻质高强的要求,通过表面光刻、喷砂、喷砂+阳极氧化等方法在A5083铝合金表面构筑微纳米形貌,采用模板法将该形貌复制到碳纤维增强的聚醚醚酮复合材料(CF/PEEK)表面。使用接触角测试仪测量水滴在其表面的静态接触角,运用扫描电镜(SEM)分析表面形貌,利用自制结冰延迟性能测试仪记录表面结冰时间,并借助粘附力测试仪计算冰层的宏观粘附力大小。试验结果表明,与未经表面处理的试样对比,构筑微纳米结构的CF/PEEK疏水性能均提高;其中,利用表面喷砂+阳极氧化处理金属模板制备得到的CF/PEEK试样的表面疏水性能及防冰性能最好,当砂砾目数为120目时,接触角达150.4°,结冰时间达到538s(较未处理试样表面延长了12倍);最后讨论分析了表面结构与疏水、防结冰性能之间的关系。更多还原

【Abstract】 We have utilized the template method in our research to fabricate micro-nano structure on the surface of carbon fiber reinforced polyether-ether-ketone(CF/PEEK) for the sake of improving the anti-icing property which is meanwhile in accordance with the request of lightweight and high strength in aeronautics and astronautics area. Contact angle tester and scanning electron microscopy(SEM) are then used to measure the contact angle(CA) of water on the composite surface and analyze its topography, respectively. We can record the time for icing by the icing-delay time tester. The adhesion tester is also used to obtain the adhesive strength. Compared with the sample of no treatment, fabricating micro-nano structure could improve the hydrophobicity of CF/PEEK, and the sample replicating the topography of sand blasting & anodic oxidized metal template has the most manifest impact with the CA achieving 150.4°, prolonging the time for icing to 538 s(12 times of the figure of no-treatment sample) when the mesh is 120. Finally, the relationship between the surface structure and hydrophobicity & the anti-icing property has been discussed.更多还原