What is polyurethane? What does polyurethane do?

What is polyurethane?

Full name of polyurethane Polyurethane is a general term for macromolecular compounds containing repeating urethane groups on the main chain. Polyurethane is a sub-category of urethane in my country, which can also contain ether ester urea biuret urea group and the first polyurethane introduced group. It is formed by the addition polymerization of organic diisocyanate or polyisocyanate and dihydroxy or polyhydroxy compounds. Polyurethane material has a wide range of uses and can replace rubber, plastic, nylon, etc., and is used in airports, hotels, building materials, automobile factories, coal mines, cement plants, high-end apartments, villas, garden landscaping, colored stone art, parks, etc.

The role of polyurethane:

Polyurethane can be used to make plastics, rubber, fibers, rigid and Flexible foam plastics, adhesives and coatings can be used in various areas of people's lives and have a wide range of applications.

1. Polyurethane Foam materials: divided into rigid polyurethane foam, semi-rigid polyurethane foam and soft polyurethane foam. Rigid polyurethane foam is mainly used in building insulation materials, thermal insulation materials (insulation for pipe facilities, etc.), daily necessities (cushions for beds, sofas, etc., insulation layers for refrigerators, air conditioners, etc., and core materials for surfboards, etc.) ), as well as transportation tools (seat cushions, ceilings and other materials for cars, airplanes, railway vehicles).

2, polyurethane Elastomer: Polyurethane elastomer has excellent tensile strength, tear resistance, impact resistance, abrasion resistance, weather resistance, hydrolysis resistance, oil resistance and other advantages. Mainly used as coating materials(such as hoses, washers, wheels, rollers, gears, pipes, etc.), insulators, soles and solid tires.

3. Polyurethane waterproof material: Polyurethane waterproof material is very convenient to use. It can be mixed and coated on site and then cured with room temperature moisture to obtain a waterproof layer with no seams, rubber elasticity and good performance. And easy to repair after damage. Generally used as floor covering materials, track and field track materials, racetracks, park ground materials, heat-insulating window frames, etc.

4. Polyurethane coating: Polyurethane coating has strong adhesion, and the coating film has excellent wear resistance, water resistance and chemical resistance. Mainly used in furniture coatings, building materials coatings and industrial printing inks.

5. Polyurethane adhesive: The properties of the cured product can be adjusted by adjusting the ratio of isocyanate and polyol to achieve high adhesion to the substrate, excellent water resistance, oil resistance and chemical resistance. . Polyurethane adhesives are mainly used in packaging, construction, wood, automobile, shoemaking and other industries.

6. Biomedical materials: Polyurethane has excellent biocompatibility, so it is gradually being widely used as biomedical materials. It can be used in the manufacture of artificial pacemakers, artificial blood vessels, artificial bones, artificial esophagus, artificial kidneys, artificial dialysis membranes, etc.

The above is what the editor of Weigu has compiled for you. What is polyurethane material and some relevant information about the functions of polyurethane. Polyurethane has gradually gained a foothold in the building materials market due to its scratch resistance and other characteristics. , netizens can purchase according to their home decoration needs.