Silicone glue is a kind of ointment, once exposed to moisture in the air, it will solidify into a tough/elastomeric rubber-like solid material. It is mainly divided into oxime type, titanium alkoxide, amine, acetone, and tin alkoxide. Silicone glue is commonly called glass glue because it is often used for bonding and sealing of glass.
Polyurethane sealant (polyurethanesealant) is a sealant with polyurethane rubber and polyurethane prepolymer as the main components. This type of sealant has high tensile strength, excellent elasticity, abrasion resistance, oil resistance and cold resistance, but it has poor water resistance, especially alkali resistance. It can be divided into three types: heating vulcanization type, room temperature vulcanization type and hot melt type. Among them, the room temperature vulcanization type is divided into one-component and two-component. It is widely used in buildings, squares, and highways as caulking sealing materials, as well as sealing in automobile manufacturing, glass installation, electronic filling, submarines and rockets.