polyurethane foam
Definition
Noun: * A lightweight, cellular material created by mixing water with polyurethane chemicals, causing a reaction that traps gas bubbles and forms a solid, porous structure. It is known for its cushioning, insulating, and buoyant properties.
Usage
- "Polyurethane foam" is a compound noun. It is typically used as a non-count noun to refer to the material in general.
- It is commonly specified by its application, such as , , or .
Examples
- The mattress is filled with soft polyurethane foam for comfort.
- Polyurethane foam is sprayed into wall cavities to improve thermal insulation.
- They used blocks of polyurethane foam to protect the fragile items during shipping.
Advanced Usage
- In manufacturing and chemistry, the process of creating it is called or .
- Specific types include flexible foam (used in upholstery) and rigid foam (used in insulation).
Variants and Related Words
- Foam (n): A mass of small bubbles formed on or in a liquid, or a lightweight solid material with a similar structure.
- Polyurethane (n): A versatile polymer used in various forms, including foams, coatings, and adhesives.
- Memory foam (n): A specific type of viscoelastic polyurethane foam that softens with body heat and molds to shape.
- Spray foam (n): Polyurethane foam applied as a liquid that expands and hardens on-site, often for insulation.
Synonyms
- Urethane foam
- PU foam (an abbreviation)
Related Phrases
- Foam rubber: A type of flexible foam, often made from latex or polyurethane.
- Expanding foam: A term for polyurethane foam that increases in volume as it cures.
Noun
-
a foam made by adding water to polyurethane plastics
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