Tips For Choosing The Best Structural Adhesive

There are a significant number of adhesives on the market today, and it can be confusing in making the decision as to the best adhesive for a particular job. The choice of structural adhesives is important for any type of surface where welding or the use of fasteners will impact either the appearance or the properties of the materials.

For example, by using a structural adhesive for a metal to metal bond, there is no need to drill holes and use nuts and bolts, making the process easier without marring the surface of either part. Likewise, by using an adhesive rather than welding, there is no internal stress created in the metal and therefore no distortion or potential weakening.

To choose the best structural adhesive, it is vital to consider several different factors. These are specific to the given project, and allows the selection of the ideal adhesive for the job.

Key Factors

Consider the type of environment where the adhesive is used. Is it a high humidity location, or is it exposed directly to water? If it is exposed to water, is it saltwater or fresh water?

In addition to humidity, is there any risk of UV exposure? Does the sun shine on the structure, or is it exposed to any type of UV light or radiation in a process? This is an essential consideration, even if the adhesive is not directly exposed to sunlight or UV lights as UV radiation can penetrate surface materials. The presence of chemicals is also a concern. Is there contact with oil, fuel, processing chemicals, or even washdown chemicals?

Issues such as temperature, vibration, shock, and even sheer force on the joint area need to be considered, measured and known before choosing a structural adhesive for the job.

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