Optimization of the interfacial properties between mechanically and electrochemically treated aluminium and nano-modified coatings for printed outdoor applications

IF 3.2 3区材料科学 Q2 ENGINEERING, CHEMICAL

International Journal of Adhesion and Adhesives Pub Date : 2024-09-13 DOI:10.1016/j.ijadhadh.2024.103840

Sanja Mahović Poljaček , Tamara Tomašegović , Stamatina Theohari , Isidoros Iakovidis , Spyros Orfanoudakis , Eleni Ntaflou

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引用次数: 0

Abstract

The aim of this research was to analyze the interfacial properties between the surfaces of mechanically and electrochemically treated aluminium substrates and the printed coatings modified by the addition of silicon dioxide (SiO₂) and titanium dioxide (TiO₂) nanoparticles. The nanoparticles were added to the printing inks in various concentrations with the scope to optimize the interface properties of the prints for outdoor applications. The surface, as well as the structural and mechanical properties of the printed coatings were evaluated. Various methods were employed to measure and analyze the surface and interfacial properties of aluminium and coatings. Surface microphotographs and the roughness of the treated aluminium substrates were examined, the surface free energy of the aluminium and the coatings as well as the adhesion properties were calculated, and the thickness and optical density of the coatings were measured. Considering that the treated aluminium samples prepared for this research had quite textured and different surfaces, the contact angles used for the calculation of surface free energy were calculated with and without Wenzel model to obtain detailed information about the interactions between the surface of aluminium samples and the printed modified coatings. The results showed that the type of treatment of aluminium substrates as well as the modification of the printing inks have a significant influence on the adhesion and surface properties of the coatings considered. Furthermore, the results demonstrated that the produced nano-modified coatings can be used as printed coatings or as customized primers for applying various types of inks and coatings.

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优化经机械和电化学处理的铝材与纳米改性涂层之间的界面特性，用于户外印刷应用

本研究旨在分析经机械和电化学处理的铝基材表面与经添加二氧化硅（SiO2）和二氧化钛（TiO2）纳米粒子改性的印刷涂层之间的界面特性。纳米粒子以不同浓度添加到印刷油墨中，目的是优化户外应用印刷品的界面特性。对印刷涂层的表面、结构和机械性能进行了评估。采用了多种方法来测量和分析铝和涂层的表面和界面特性。对处理过的铝基材的表面显微照片和粗糙度进行了检查，计算了铝和涂层的表面自由能以及附着特性，并测量了涂层的厚度和光密度。考虑到为本研究制备的处理过的铝样品表面纹理复杂且各不相同，计算表面自由能时使用的接触角在有温泽模型和无温泽模型的情况下都进行了计算，以获得铝样品表面与印刷改性涂层之间相互作用的详细信息。结果表明，铝基材的处理类型和印刷油墨的改性对涂层的附着力和表面特性有很大影响。此外，研究结果还表明，生产出的纳米改性涂层可用作印刷涂层或定制底漆，用于涂抹各种类型的油墨和涂层。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Adhesion and Adhesives 工程技术-材料科学：综合

CiteScore

6.90

自引率

8.80%

发文量

200

审稿时长

8.3 months

期刊介绍： The International Journal of Adhesion and Adhesives draws together the many aspects of the science and technology of adhesive materials, from fundamental research and development work to industrial applications. Subject areas covered include: interfacial interactions, surface chemistry, methods of testing, accumulation of test data on physical and mechanical properties, environmental effects, new adhesive materials, sealants, design of bonded joints, and manufacturing technology.