Assess the performance of adhesives for bonding and joining dissimilar metals

市场上有许多用于类似金属的粘合剂。很少进行研究 关于两种不同材料的粘合剂结合，例如铝板与钢板。目标是 在两个金属板之间具有上级结合。如果防止水/湿气进入片材之间， 金属和粘合剂，粘合接头将保持完整。一种粘合剂可能对一种粘合剂很有效， 一种类型的材料，但可能不会有效地结合另一种材料。这项研究将确定，如果一个 粘合剂可以很好地用于两种材料，并且如果铝和钢板需要独特的制备， 一种特殊的粘合剂。 这项由NSERC Engage Grant支持的研究将调查各种商业用途， 可用的粘合剂，检查金属板表面制备的各种预处理，例如光， 中等、重砂以及金属表面温度（环境温度和预热温度）和压力， 粘合剂的应用。此外，将评估粘合剂的适当固化温度 以获得最佳粘合强度。将遵循五个ASTM标准，在不同温度下测试粘合剂 温度、湿度和配置。 所选粘合剂的性能将使我们能够就其粘合性提出建议 能力、金属表面制备技术以及异种金属连接的潜在应用。预计， 研究将提供比以前更低的成本和更快、更可靠的组装技术 approach.

Many bonding adhesives for similar metals are available on the market. Very little research has been conducted on the adhesive bonding of two different materials such as an aluminum sheet to a steel sheet. The goal is to have a superior bond between the two metal sheets. If water/moisture ingress is prevented between the sheet metal and adhesive, the bonded joint will remain intact. It is possible that one adhesive may work well for one type of material but may not be as effective in bonding for another material.The study will determine if one adhesive can work well for both materials and if the aluminum and steel sheets require a unique preparation process for a specific adhesive. The research supported by this NSERC Engage Grant will investigate the use of a variety of commercially available adhesives, examine various pre-treatments of the sheet metal surface preparation such as light, medium, heavy sanding as well as metal surface temperature (ambient and pre-heated) and pressure for application of the adhesive. In addition the adhesives will be evaluated for their appropriate curing temperature for optimum bond strength. Five ASTM standards will be followed to test the adhesives at various temperatures, humidity and configurations. The performance of the selected adhesives will enable recommendations to be made related to their adhesion ability, metal surface preparation technique and potential use for bonding dissimilar metals. It is anticipated the research will provide a lower cost and a quicker, more reliable assembling technique than the previous approach.