The other name for instant adhesives is cyanoacrylate adhesive, a one-part acrylate industrial adhesive that cures instantly upon contact with the surface, hence the name. It does so due to the reaction with surface moisture. Another name for instant adhesive is super glue because of its excellent ability to adhere to various surfaces in a very quick time. However, the biggest drawback of this adhesive is the poor impact or shock resistance. But certain formulations were able to address this issue such as the case with elastomer modified super glue.
When it comes to specifying instant adhesives, there are important factors to consider, including viscosity, gap fill, temperature, set time, and tensile strength. Simply put, viscosity is the measurement of the resistance of the fluid, be it water or oil, to flow. It is what controls the amount of super glue dispensed onto the surfaces to be bonded. As for the initial set time, it refers to the amount of time the product can be applied on the surface before extensive curing happens.
In addition, the gap-fill is also worth considering because instant adhesives are limited in terms of how wide a space they can accommodate to ensure a functional, full-strength bond. Also, tensile strength must be determined as well to know the maximum stress that the bond can handle. Lastly, temperature refers to the range that the adhesive can handle without degrading the structure of its bonds.
Now, given those various factors to consider in choosing the best adhesive, super glue comes in various formulations, such as gels, liquids, and pastes. Your specific application dictates which are the best to use. For instance, the liquid adhesive is perfect for applications involving filling in deep gaps while paste adhesives are perfect for situations where running and greater force are involved in dispensing the adhesive onto the surfaces.
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