Adhesion of Geopolymer Bonded Joints Considering Surface Treatments
Adhesion of Geopolymer Bonded Joints Considering Surface Treatments
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DOI：
10.1080/00218464.2012.660075
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发表时间：
2012-01-01
影响因子：
2.2
通讯作者：
Torres, S. M.
中科院分区：
文献类型：
--
作者：
De Barros, S.;De Souza, J. R.;Torres, S. M.
在这项研究中，考虑到不同的表面条件，研究了一种基于土聚合物的胶粘剂在金属基材上的粘接性能。对钢板和铝板进行了机械处理(喷砂和喷砂)和化学处理(硝基磷酸和硅烷化)。对单搭接试件进行了试验，以了解这些预处理对剪切粘结强度的影响。扫描表面并使用平均表面粗糙度参数来评估它们对粘接强度的影响。结果表明，当单个表面粗糙度参数与结合强度相关时，单独的表面粗糙度参数的影响不具有统计学意义。一般而言，对于以土聚合物为粘合剂的钢和铝接头，化学处理通常不如单独的机械处理有效。
In this study the adhesion properties of a geopolymer-based adhesive on metallic substrates are investigated, considering different surface conditions. Mechanical treatments (grit-blasting and sand-blasting) and chemical treatments (nitro-phosphoric acid and silanization) were performed on steel and aluminium plates. Single lap joint specimens were tested in order to access the influence of these pretreatments on the shear bond strength. The surfaces were scanned and the average surface roughness parameters were used in order to assess their effect on bond strength. The results indicated that the effect of individual surface roughness parameters alone is not statistically significant when correlated with bond strength. In general, chemical treatments were usually less effective than mechanical treatments alone for both steel and aluminium joints with geopolymers as adhesives.