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  2. Foam - Wikipedia

    en.wikipedia.org/wiki/Foam

    Foam, in this case meaning "bubbly liquid", is also produced as an often-unwanted by-product in the manufacture of various substances. For example, foam is a serious problem in the chemical industry, especially for biochemical processes. Many biological substances, for example proteins, easily create foam on agitation or aeration.

  3. Memory foam - Wikipedia

    en.wikipedia.org/wiki/Memory_foam

    A memory foam mattress is usually denser than other foam mattresses, making it both more supportive and heavier. Memory foam mattresses are often sold for higher prices than traditional mattresses. Memory foam used in mattresses is commonly manufactured in densities ranging from less than 24kg/m 3 (1.5 lb/ft 3) to 128kg/m 3 (8 lb/ft 3) density

  4. Polyurethane foam - Wikipedia

    en.wikipedia.org/wiki/Polyurethane_foam

    The so-called flexible polyurethane foam (FPF) is produced from the reaction of polyols and isocyanates, a process pioneered in 1937. [1] FPF allows for some compression and resilience that provides a cushioning effect. Because of this property, it is often used in furniture, bedding, automotive seating, athletic equipment, packaging, footwear ...

  5. Foam glass - Wikipedia

    en.wikipedia.org/wiki/Foam_glass

    Foam glass is a kind of lightweight, high-strength building material and decorative material with excellent performance (insulation) and sound absorption that is both moisture-proof and fireproof. The temperature range is from -196 degrees to 450 degrees Celsius. Although other new insulation materials emerge in an endless stream, foam glass ...

  6. Sleep Experts Say These Memory Foam Pillows May Help ... - AOL

    www.aol.com/sleep-experts-memory-foam-pillows...

    The GlacioTex Cooling Memory Foam Pillow proved to be one of the best cooling pillows we tested for 2024, thanks to a combination of a phase-changing 50/50 polyester/polyethylene fabric cover and ...

  7. Metal foam - Wikipedia

    en.wikipedia.org/wiki/Metal_foam

    In materials science, a metal foam is a material or structure consisting of a solid metal (frequently aluminium) with gas-filled pores comprising a large portion of the volume. The pores can be sealed (closed-cell foam) or interconnected (open-cell foam). [1] The defining characteristic of metal foams is a high porosity: typically only 5–25% ...

  8. Foaming agent - Wikipedia

    en.wikipedia.org/wiki/Foaming_agent

    Foaming agent. A foaming agent is a material such as a surfactant or a blowing agent that facilitates the formation of foam. A surfactant, when present in small amounts, reduces surface tension of a liquid (reduces the work needed to create the foam) or increases its colloidal stability by inhibiting coalescence of bubbles. [ 1] A blowing agent ...

  9. List of polyurethane applications - Wikipedia

    en.wikipedia.org/wiki/List_of_polyurethane...

    Industrial Insulation. Rigid polyurethane foam is used in various industries to provide thermal insulation to installations and pipes. In particular, the piping for district heating systems in Europe is primarily insulated using a pre-insulated pipes sandwich assembly composed of a steel heat service pipe, an insulating layer (polyurethane foam) and a polyethylene (PE) casing, which are bonded ...

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