Rubber fenders are widely used in navigation, and also have a strong role in use. They can be divided into many types, such as cylindrical rubber fenders, semicircular (D-type) rubber fenders, drum rubber fenders, and inflatable berthing balls. What are their functions?What is the scope of application?Let's take a look.Each rubber fender has its own difference
In fact, there are many thermal insulation materials in the market, but polyurethane foam board is one of the three common internal wall thermal insulation materials.It is a special polyurethane product that can be filled with polyurethane prepolymer, foaming agent, catalyst and other components in a pressure resistant aerosol tank.When the material is ejected from the aerosol tank, the foamed polyurethane material will rapidly expand and solidify with the air or the moisture in the contacted matrix
As a polymer material with excellent performance, polyurethane thermal insulation material has become the fifth largest plastic after polyethylene, polyvinyl chloride, polypropylene and polystyrene, and the global total output has exceeded 10 million tons/year.In recent years, China's polyurethane industry has made great progress, and has been widely used in refrigerator, container, leather, shoemaking, textile and other fields.Of course, in our
