Measurement of the practical adhesion of paint coatings to metallic sheets by the pull-off and three-point flexure tests
Measurement of the practical adhesion of paint coatings to metallic sheets by the pull-off and three-point flexure tests
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通过拉力测试和三点弯曲测试测量油漆涂层对金属板的实际附着力
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
M. Bouzziri
中科院分区：
文献类型：
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作者：
A. Roche;P. Dole;M. Bouzziri
在本文中，我们比较实际的附着力测量醇酸，乙烯基，环氧树脂和聚氨酯涂料在冷轧钢使用拉脱和三点弯曲试验。结果表明：(a)在拉拔试验中，极限载荷和极限应变值取决于螺柱面积。在修整过程中，系统内会产生裂纹，导致测量参数大幅下降。另一方面，不可能区分失效起始区和失效扩展区；(b)三点挠曲试验中，加筋和不加筋试样对应的载荷/位移曲线所对应的面积W与粘结宽度和基材顺应性无关。在进行这样的力学测试之后，还可以使用适当的观察工具（如扫描电子显微镜）和分析工具（如电子探针分析）来区分故障的发生和故障的传播。
In this paper, we compare the practical adhesion measurements of alkyd, vinyl, epoxy, and polyurethane paints on cold-rolled steel using the pull-off and three-point flexure tests. It has been shown that (a) in the pull-off test, the ultimate load and ultimate strain values depend on the stud area. During trimming, cracks are created within the system which are responsible for a large decrease in the parameters measured. On the other hand, it is impossible to differentiate between the failure initiation and the failure propagation zones; (b) in the three-point flexure test, the area (W) subtended by the load/displacement curves corresponding to samples with and without stiffener does not depend on the bonded width or on the substrate compliance. After carrying out such a mechanical test, it is also possible to discriminate between failure initiation and failure propagation using appropriate tools for observation, such as scanning electron microscopy, and for analysis, such as electron microprobe analysis ...