What kind of adhesive is used to attach the windshield rearview mirror?
2 Answers
Windshield rearview mirrors can be attached using sheet metal adhesive or glass adhesive. Introduction to glass adhesive: Glass adhesive is a material used for bonding and sealing various types of glass to other substrates. It is mainly divided into two categories: silicone adhesive and polyurethane adhesive (PU). Silicone sealant is glass adhesive, which is further divided into acidic and neutral types. Neutral adhesives include stone sealant, mildew-proof sealant, fireproof sealant, and pipe sealant. Curing time introduction: The curing process of silicone adhesive progresses from the surface inward. Different types of silicone have varying surface drying and curing times, so any surface repairs must be done before the glass adhesive surface dries (generally within 5-10 minutes for acidic and neutral transparent adhesives, and within 30 minutes for neutral colored adhesives). If masking tape is used to cover an area, it must be removed before the outer skin forms after applying the adhesive.
I recently glued my windshield rearview mirror myself. I had tried regular double-sided tape before, but it couldn’t hold at all because the car vibrates a lot while driving, and the high summer temperatures caused the ordinary glue to soften and fall off. Later, I learned that you must use automotive-grade strong adhesive, such as polyurethane glue or 3M-brand double-sided tape, which are designed to withstand road vibrations and temperature changes, from sub-zero temperatures to high heat, without failing. Before gluing, I carefully cleaned the glass surface and the rearview mirror base, using alcohol to remove dust and grease, ensuring no debris interfered with the adhesive bond. Then, I aligned the position, pressed firmly, and waited about ten minutes for it to cure. The whole process didn’t take much time, but once glued, it’s extremely sturdy—I no longer worry about the mirror falling off while driving. Remember, when choosing adhesive, check the heat resistance and shockproof rating labeled on the packaging. Buy brands specifically designed for cars at auto parts stores—the results are fantastic. Now, my mirror stays firmly in place.