Cangzhou Xinyue Steel Pipe Anti-corrosion Co

Main advantages
The characteristic of polyester paint is that it can form acyclic and/or cyclic hydrogen bonds between polymer molecules. Under the action of external force, the hydrogen bonds can be separated and absorb external energy. (Absorption per mole~). When the external force is removed, hydrogen bonds can be re-formed. Such hydrogen bonds are broken and re-formed reversibly and repeatedly, making the polyurethane paint film highly mechanically wear-resistant and tough. Compared with other paints, under the same hardness conditions, the polyurethane paint film has the highest elongation at break due to the effect of hydrogen bonding, so it is widely used as floor paint, overtime paint, highly decorative anti-corrosion paint, etc.
Some varieties of coatings (such as epoxy, chlorinated rubber, etc.) have good protective properties but poor decorative properties. Some varieties (such as nitrocellulose paint, etc.) have good decorative properties but poor protective properties. However, polyurethane paint has both protective and decorative properties and can be used for coating high-end wood, pianos, large passenger aircraft, etc.
The paint film has strong adhesion. Polyurethane, like epoxy, can be formulated into an excellent adhesive. Therefore, the coating film has excellent adhesion to a variety of surfaces (metal, wood, rubber, concrete, certain plastics, etc.). The author's experience is that for some metal surfaces, the adhesion of polyurethane paint is slightly worse than that of epoxy paint, but for rubber, polyurethane paint exceeds epoxy paint.
The elasticity of the coating film can be adjusted according to needs, and its component ratio can be adjusted from an extremely hard coating to an extremely flexible elastic coating. General paints such as epoxy, unsaturated polyester, and aminoalkyd etc. can only be made into a rigid coating, and it is difficult to impart high elasticity.
The coating film has excellent resistance to chemicals, acids, alkali, salt liquids, and petroleum products. Therefore, it can be used as protective coating for drilling platforms, ships, chemical plants, and inner wall coating of petroleum storage tanks.
, can be dried at high temperatures and cured at low temperatures. Among typical room-temperature curing coatings such as epoxy, polyurethane, and unsaturated polyester, epoxy and unsaturated polyester are difficult to cure at ℃. Only polyurethane can be cured normally at ℃, so the construction season is long. Because it can solidify quickly at room temperature, large-scale projects such as large oil tanks and large aircraft can be applied at room temperature to achieve better results than ordinary baking paint.