The vast The majority of PU (polyurethane) is a multi-isocyanate (Isocyanate material commonly known as B), and contain active hydrogen atoms of the substances, such as polyol (polymers), polypropylene (polypropylene), polypropylene (polypropylene) and polypropylene (polypropylene). such as polyol (polyol material commonly known as A), addition polymerization (polyaddition reaction) formed due to the molecular structure of polyurethane containing several carbamate (carbamate referred to as urethane) groups, so called polyurethane. In a multi-isocyanate, the widespread use of the TDI and MDI is also a major factor. In a multi-isocyanate, the widespread use of the TDI and MDI; commonly used in the preparation of PU polymer polyols are polyester polyols (polyester polyol), polyether polyols (polyether polyols). polyether polyols).
PU PU high strength, impact resistance, abrasion resistance, tear resistance, bent flexible, low temperature resistance and oil resistance, excellent chemical resistance and good blood compatibility. Excellent chemical resistance and good blood compatibility and so on. PU materials can be by changing the chemical structure of different materials, specifications indicators, varieties, the PU materials can be by changing the chemical structure of different materials, specifications indicators, varieties, the proportion of manufactured formula with a variety of performance and uses a great variety of products, including foams, elastomers, and other materials. As the PU used in many kinds of raw materials, processed in different ways, performance, wide-ranging and applications continue to expand, at present the PU materials can be used in many different ways, including foams, elastomers and so on. As the PU used in many kinds of raw materials, processed in different ways, performance, wide-ranging and applications continue to expand, at present the only one of all polymer materials, plastics, rubber, foam, fiber, coatings, adhesives and functional polymer Seven fields have to be a valuable synthetic polymer materials, has become one of the world's six developing synthetic materials. It can be widely used in light industry, construction, automobile and other industries. It can be widely used in light industry, construction, automotive, textiles, electrical machinery, ships, petrochemicals, metallurgy, energy, military, and other national economic spheres. national economic spheres.