Metal To Plastic Bonding

Sand both the metal and plastic first to rough up the surface so the glue will grab.

Metal to plastic bonding.

Ideally the coefficient of thermal expansion for the adhesive itself would be negligible. There are metal adhesives that bond some plastics and plastic adhesives that bond some metals. Apply the initiator to the metal and the adhesive to the plastic. Plastics that you generally can glue.

Plastic that you pretty much cannot glue. The specific substrates as well as the surface condition of the substrates the types of stresses on the bond and the environment the bond must withstand help in selecting the best adhesive. Here are my two favorites. Permabond ta4246 with initiator 46 is a no mix adhesive and initiator.

Cyanoacrylate glue more commonly known as super glue is the easiest option when dealing with metal and plastics. Before attempting to glue metal to plastic it s important to know what types of adhesives can accomplish the task. The biggest advantage of super glue is that it s very easy to apply. Substrates and surface condition.

There are several types of structural acrylic adhesives and not all bond metal to plastic. Flexible waxy polyethylene and polypropylene such as hdpe pete most buckets cups food or soda or cleaner bottles. See the high bond strengths attainable below. 35 n mm 5100 psi.

Not all adhesives are alike wood glue and school glue for instance are designed for porous materials and would not work well on either metal or plastic. Metals and plastics have different coefficients of thermal expansion so the best glue for plastic to metal bonding will accommodate this difference.