The full name of polyurethane is polyurethane, which is a general term for macromolecular compounds containing repeating urethane groups on the main chain. Polyurethane is a subgroup of urethane in my country, and it can also contain ether ester urea biuret urea group first polyurethane introduction group. It is formed by polyaddition of organic diisocyanate or polyisocyanate and dihydroxyl or polyhydroxyl compound. Polyurethane material is very versatile and can replace rubber, plastic, nylon, etc., used in airports, hotels, building materials, automobile factories, coal mines, cement factories, high-end apartments, villas, landscaping, colored stone art, parks, etc.
Polyurethane (PU), the full name of polyurethane, is a polymer compound, which was produced by Otto Bayer in 1937. Polyurethane materials are very versatile and can replace rubber, plastic, nylon, etc., and are used in airports, hotels, building materials, automobile factories, coal mines, cement factories, high-end apartments, villas, landscaping, colored stone art, parks, etc. After decades of technological development, this material has been widely used in the field of home furnishing, construction, daily necessities, transportation, and home appliances.
Polyurethane chemistry was first studied by the German chemist, Friedrich Bayer in 1937. He produced early prototypes by reacting toluene diisocyanate reacted with dihydric alcohols. From this work one of the first crystalline polyurethane fibers, Perlon U, was developed. The development of elastic polyurethanes began as a program to find a replacement for rubber during the days of World War II. In 1940, the first polyurethane elastomers were produced. These compounds gave millable gums that could be used as an adequate alternative to rubber. When scientists found that polyurethanes could be made into fine threads, they were combined with nylon to make more lightweight, stretchable garments.
Polyurethanes have the ability to be made into foams (which is one of their most desirable properties). This is done by facilitating the production of a gas (usually carbon dioxide) during the urethane polymerization process. Another advantage of polyurethane is that high-density microcellular foams of the polymer can be produced without any blowing agents.
Polyurethane (PU) is a resilient, flexible and durable manufactured material. There are various types of polyurethanes, which look and feel very different from each other. They are used in an extensive range of products. Polyurethane-containing products surround us in every aspect of our everyday lives. While most people are not familiar with polyurethanes because they are generally hidden behind covers or surfaces, it would be hard to imagine life without them.
What is Polypropylene? Polypropylene (PP) is created through the polymerization of propylene gas. Thermoplastics like polypropylene and polyethylene liquefy under high heat, which allow these materials to easily take shape generally through injection molding or thermoforming. Because of this, polypropylene can display a wide range of properties based on the chosen manufacturing method. While polypropylene may have many similarities to polyethylene, polyurethanes tend to offer more robust physical properties even in the most extreme environments.