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Polyurethane - Wikipedia
https://en.wikipedia.org/wiki/Polyurethane
WEBPolyurethane (/ ˌ p ɒ l i ˈ jʊər ə ˌ θ eɪ n,-j ʊəˈr ɛ θ eɪ n /; often abbreviated PUR and PU) refers to a class of polymers composed of organic units joined by carbamate (urethane) links. In contrast to other common polymers such as polyethylene and polystyrene, polyurethane is produced from
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What is polyurethane? - Polyurethanes
https://www.polyurethanes.org/what-is-it/
WEBPolyurethanes are plastic polymers made by combining diisocyanates ( TDI and MDI) and polyols. There are literally hundreds of different types of polyurethanes and each is made in a slightly different way: Polyurethanes and energy efficiency.
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What is Polyurethane? Composition, Preparation, Properties, …
https://byjus.com/chemistry/polyurethane/
WEBPolyurethane, often abbreviated to PU or PUR, is an organic polymer that features many organic units linked via urethane molecules. Most polyurethanes do not melt upon heating and can, therefore, be classified as thermosetting polymers. However, it can be noted that some specific types of polyurethanes exhibit thermoplastic properties and can ...
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All About Polyurethane - This Old House
https://www.thisoldhouse.com/painting/21018327/all-about-polyurethane
WEBWhat Is Polyurethane? It’s a kind of super-tough varnish formulated so that its microscopic chains of resin molecules will bond tightly with one another as it dries. The result is a finish that’s much more resistant to water, solvents, abrasion, and …
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Polyurethane | Foam, Synthesis, Plastics | Britannica
https://www.britannica.com/science/polyurethane
WEBMar 7, 2024 · polyurethane, any of a class of synthetic resinous, fibrous, or elastomeric compounds belonging to the family of organic polymers made by the reaction of diisocyanates (organic compounds containing two functional groups of structure ―NCO) with other difunctional compounds such as glycols.
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How to Apply Polyurethane to Wood - The Home Depot
https://www.homedepot.com/c/ah/how-to-apply-polyurethane/9ba683603be9fa5395fab901d96f5888
WEBPolyurethane wood finish is used to coat surfaces, protecting them from scratches and helping to resist water damage. Learning how to apply polyurethane can give wood furniture and flooring a glossy, smooth finish while improving its durability. Read on for steps on how to apply polyurethane to furniture, plus tips for getting professional results.
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Polyurethane: Properties, Processing, and Applications
https://matmatch.com/learn/material/polyurethane
WEBPolyurethanes are a large class of polymers that can be tailored to a wide range of applications, making a significant contribution to the construction, automotive and electrical sectors. This broad range of applications is possible as there are both thermoplastic and thermosetting polyurethanes.
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Polyurethane | Formula, Properties & Application
https://material-properties.org/polyurethane/
WEBPolyurethane is a versatile and highly durable synthetic resin used in many industries across the world. Noted for its exceptional flexibility, resilience, and insulating properties, it is utilized in a vast array of applications, from furniture and mattresses to insulation panels and high-performance adhesives.
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Thermoplastic polyurethane - Wikipedia
https://en.wikipedia.org/wiki/Thermoplastic_polyurethane
WEBThermoplastic polyurethane (TPU) is any of a class of polyurethane plastics with many properties, including elasticity, transparency, and resistance to oil, grease, and abrasion. Technically, they are thermoplastic elastomers consisting of linear segmented block copolymers composed of hard and soft segments.
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Polyurethane - an overview | ScienceDirect Topics
https://www.sciencedirect.com/topics/chemical-engineering/polyurethane
WEBPolyurethanes (PURs) have developed since their discovery by Otto Bayer and co-workers some 75 years ago into a most versatile group of polymers. Being formed from two liquid raw materials, depending on the processing conditions, they …
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