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为了探讨纳米涂覆对材料表面润湿性的影响,以塑料为基体进行了Cu、非晶态纳米SiO2涂层对试样润湿性影响的座滴试验研究,并利用扫描电镜(SEM)和接触角测量仪对试样界面微观形貌的变化进行了观察以及接触角的测定,最后采用多项对比和理论分析相结合的方法,对材料润湿性的改善机理做出解释。结果表明,纳米涂覆对材料表面润湿性的改善起到了重要作用,试样经非晶态纳米SiO2涂覆处理后,形成牢固的润湿界面,H2O/PVC(聚氯乙烯)的润湿角从45.2°减小到28.3°,润湿性显著提高。
In order to investigate the influence of nano-coating on the wettability of the material surface, droplet experiments of the wettability of Cu and amorphous nano-SiO2 coating were carried out on the basis of plastic. Scanning electron microscopy (SEM) and The contact angle measuring instrument was used to observe the change of the micro-morphology of the sample interface and to determine the contact angle. Finally, a number of contrast and theoretical analysis methods were combined to explain the improvement mechanism of the material wettability. The results show that nano-coating plays an important role in improving the wettability of the material surface. After the amorphous nano-SiO2 coating treatment, the sample forms a strong wetting interface and the wetting of H2O / PVC (polyvinyl chloride) The angle decreases from 45.2 ° to 28.3 ° and the wettability increases significantly.