Enhancement of the mechanical properties of nanoparticulate thin coatings via surface modification and cross-linking additive
Enhancement of the mechanical properties of nanoparticulate thin coatings via surface modification and cross-linking additive
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DOI：
10.1002/ceat.201600528
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发表时间：
2017-09
影响因子：
2.1
通讯作者：
J. Hesselbach;A. Kockmann;Sabine Lüke;Achim Overbeck;G. Garnweitner;C. Schilde;A. Kwade
中科院分区：
文献类型：
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作者：
J. Hesselbach;A. Kockmann;Sabine Lüke;Achim Overbeck;G. Garnweitner;C. Schilde;A. Kwade
众所周知，在涂料中使用纳米颗粒可以改善其表面和机械性能。本研究的目的是研究在薄膜涂层中使用改性的纳米Al_2O_3粒子来改善涂层的机械性能，特别是通过使用添加剂使粒子发生交联性。此外，作为研究的一部分，还考察了配方参数和交联剂的动力学。总的来说，实验表明，通过颗粒表面改性和交联剂的结合，可以提高材料的力学性能，如硬度和耐划伤性能。具体来说，确定了最佳添加剂浓度，以获得具有改善的机械性能和恒定的光学性能的涂层。这些结果与结构的形成和交联行为有关。根据公布的结果，确定了这一系列实验的机制，以解释粒子如何相互结合以及如何通过使用不同的添加剂比例形成涂层结构。
It is generally known, that the use of nanoparticles in coatings improves their surface as well as their mechanical properties. The aim of this study is to investigate the use of modified Al2O3-nanoparticles for thin coatings to improve especially the mechanical characteristics by cross-linking the particles using an additive. Additionally, the formulation parameters as well as the cross-linking kinetics were investigated as a part of this research. In general, the experiments show that the mechanical properties, e.g. hardness and scratch resistance can be enhanced via particle surface modification in combination with a cross-linking additive. Specifically, the optimal additive concentration was determined in order to obtain coatings with improved mechanical and constant optical properties. These results were related to the structure formation and cross-linking behavior. On account of the presented outcome, mechanisms were identified for this series of experiments to explain how the particles bond with each other and how the coating structure is formed by using different additive ratios.