polyurethane
Definition
Noun: 1. A synthetic polymer material: A versatile man-made material belonging to a class of polymers characterized by the urethane chemical linkage. It is produced in many forms (flexible, rigid, foam, solid) and is widely used in industrial and consumer applications for its durability, insulation properties, and adaptability.
Examples of Usage
- Noun:
- The mattress core is made of polyurethane foam for comfort and support.
- A clear polyurethane coating was applied to protect the wooden floor from scratches.
- The car's bumper is constructed from a resilient type of polyurethane.
Advanced Usage
- Technical/Industrial Context: In manufacturing and chemistry, "polyurethane" specifies the polymer family, often abbreviated as PU or PUR. It is discussed in terms of its formulation (e.g., thermoplastic polyurethane), curing process, or specific properties like density and tensile strength.
- Thermoplastic polyurethane (TPU) is favored for products requiring both flexibility and durability.
Variants and Related Words
- Polyurethane Foam (n): A lightweight cellular form of polyurethane, used extensively for cushioning, insulation, and packaging.
- Spray polyurethane foam is an effective insulator for homes.
- Urethane (n): While often used informally as a synonym for polyurethane, technically "urethane" refers to a specific chemical compound. In common usage, especially in products like "urethane varnish," it typically means a polyurethane-based coating.
Synonyms
- Polymer: (a broader category) A large molecule composed of repeating structural units.
- Synthetic Resin: (a broader category) A man-made polymer used in plastics, coatings, and adhesives.
Related Phrases / Compounds
- PU Leather / Polyurethane Leather (n): A synthetic leather material made by coating a fabric base with a polyurethane film.
- The bag is made from high-quality PU leather.
- Polyurethane Adhesive (n): A strong, flexible glue based on polyurethane chemistry.
- Use a polyurethane adhesive for bonding wood to metal.
Noun
-
any of various polymers containing the urethane radical; a wide variety of synthetic forms are made and used as adhesives or plastics or paints or rubber
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