Superglue and PVA glue both use polymerization for adhesion. Polymerization is a chemical reaction, where the sharing of electrons allows some types of molecule to join together, forming long chains called polymers. Superglue contains a compound called ethyl 2-cyanoacrylate, which reacts with water to cure (ie turn from a liquid into a solid). Usually there is a very thin layer of water present on most surfaces – condensed water vapor from the air – making superglue effective on almost any type of surface. PVA (polyvinyl acetate) glue is water-based, and is commonly used for sticking wood together. Water in PVA intertwines the fibers of wood with the polyvinyl acetate, eventually evaporating and leaving behind a bond stronger than the material itself.
Engine oils play a crucial part in your engine’s functionality. Without the oil, your engine can become damaged fairly quickly and so it’s in your best interest to make sure that the engine oil is up to par. The oil in your engine makes sure that the all mechanical components are lubricated to reduce friction, wear and heat. The engine oil ensures that components don’t rub against each other and wear away. While it depends on how often you use your car, older engine oil doesn’t perform as well and so a regular change in engine oil is essential to the functionality of your car.