Polyurethane - Wikipedia
Polyurethane is a group of polymers composed of organic units joined by carbamate links. Learn about its origin, production, properties, types, and uses in various fields such as foams, coatings, adhesives, and fibers.
All About Polyurethane - This Old House
2024年10月8日 · Learn how to choose and apply polyurethane, a synthetic resin that protects and enhances wood surfaces. Compare different types, gloss levels, and methods of polyurethane for interior and exterior projects.
How to Apply Polyurethane to Wood - The Home Depot
Learn how to apply polyurethane to wood furniture and flooring with this step-by-step guide. Find out the differences between oil-based and water-based polyurethane, the types of sheens, and the best tools and tips for a smooth finish.
What's the Difference Between Polyurethane, Polycrylic, Varnish ... - HGTV
Learn the differences and uses of polyurethane, varnish, shellac and lacquer as finishes for wood. Find out how to apply them with brushes, rollers, rags or sprayers.
What is polyurethane? - Polyurethanes
Learn about the history, science and applications of polyurethanes, a versatile plastic polymer made by combining diisocyanates and polyols. Discover how polyurethanes are used in coatings, adhesives, foams, insulation and more.
What is Polyurethane? Composition, Preparation, Properties, …
Polyurethane, 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.
Polyurethane | Foam, Synthesis, Plastics | Britannica
Learn about polyurethane, a synthetic polymer made by the reaction of diisocyanates and other compounds. Find out how polyurethane is used in foams, fibres, elastomers, and other applications.
7 Types of Polyurethane and When to Use Each - Obsessed …
Learn about seven types of polyurethane finishes and how to use them for different woodworking projects. Compare oil-based, water-based, wipe-on, spray, gel, exterior, and high-build polyurethane.
polyurethane finish- advantages and disadvantages
Polyurethane is a durable and water-resistant finish that can protect wood and other surfaces, but it can also yellow over time and change the appearance of the wood. Learn more about the pros and cons of using polyurethane finish for your project.
General Plastics — Rigid & Flexible Polyurethane Foam …
General Plastics produces rigid and flexible polyurethane foam sheet stock and custom parts for diverse industries. It also offers composite assemblies, sub-assemblies, machining, tooling, thermoforming and complex laminates services.