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硅酮密封胶对阳极氧化铝的黏结质量千差万别。影响黏结性的关键因素是铝材表面的封孔程度、氧化层的着色情况、清洁剂的特性以及基材表面清洁与打胶之间允许的时间间隔。由于清洁剂将有机污染物从阳极氧化铝表面去除的效果不同,所以此效果并不和黏结质量有必然联系。据猜测,吸附在阳极氧化铝表面的清洁溶剂会改善基材表面从而提高硅酮胶的黏结性,但这种改善效果会随着清洁溶剂随时间的的挥发而降低。对于给定的溶剂,最佳的黏结效果取决于材料表面的封孔程度。依照ISO 2143酸刻蚀方法测量材料表面的封孔程度,可以预测未着色的阳极氧化铝基材的黏结性。对于着色的阳极氧化铝表面,依照ISO 2931的测试标准,用电相位漂移方法可以用来预测黏结质量。一种控制阳极氧化铝表面的方法被提了出来,此方法是测量不同频率下基材的电阻抗并将它成功地和硅酮密封胶与该材料表面的长期黏接性联系起来。
Silicone sealants on the anodized aluminum bonding quality vary widely. The key factors affecting the cohesion are the degree of sealing of the aluminum surface, the coloring of the oxide layer, the properties of the cleaning agent, and the time allowed between the cleaning of the substrate surface and the application of glue. This effect does not necessarily correlate with the quality of the bond as the cleaner removes the organic contaminants from the anodized aluminum surface. It is suspected that the cleaning solvent adsorbed on the surface of the anodized aluminum will improve the surface of the substrate to improve the adhesion of the silicone adhesive, but this improvement will decrease as the cleaning solvent volatilizes over time. The best bonding for a given solvent depends on the degree of sealing on the surface of the material. The degree of sealing of the surface of the material is measured in accordance with the ISO 2143 acid etching method to predict the adhesion of the uncolored anodized alumina substrate. For pigmented anodized aluminum surfaces, the electrical phase shift method can be used to predict the bond quality per the ISO 2931 test standard. A method of controlling the surface of anodized aluminum has been proposed by measuring the electrical resistance of the substrate at different frequencies and successfully linking it to the long term adhesion of the silicone sealant to the surface of the material.