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  2. 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 ...

  3. Polyurethane - Wikipedia

    en.wikipedia.org/wiki/Polyurethane

    Polyurethane synthesis, wherein the urethane groups −NH−(C=O)−O− link the molecular units A kitchen sponge made of polyurethane foam . Polyurethane (/ ˌ p ɒ l i ˈ jʊər ə ˌ θ eɪ n,-j ʊəˈr ɛ θ eɪ n /; [1] often abbreviated PUR and PU) refers to a class of polymers composed of organic units joined by carbamate (urethane) links.

  4. Polyurethane foam - Wikipedia

    en.wikipedia.org/wiki/Polyurethane_foam

    An assortment of polyurethane foam products for cushioning and insulation. Polyurethane foam is a solid polymeric foam based on polyurethane chemistry. As a specialist synthetic material with highly diverse applications, polyurethane foams are primarily used for thermal insulation and as a cushioning material in mattresses, upholstered furniture or as seating in vehicles.

  5. Floor cleaning - Wikipedia

    en.wikipedia.org/wiki/Floor_cleaning

    Vinyl composition tile or VCT is a common commercial floor type. Cleaning this type of floor is done with either a mop and bucket or with a floor scrubber. VCT requires a polymer coating or floor finish to protect it. This needs to be kept clean with dust mopping and wet cleaning (i.e. wet mopping or floor scrubber).

  6. Artificial leather - Wikipedia

    en.wikipedia.org/wiki/Artificial_leather

    Artificial leathers are often used in clothing fabrics, furniture upholstery, water craft upholstery, and automotive interiors. [2]One of its primary advantages, especially in cars, is that it requires little maintenance in comparison to leather, and does not crack or fade easily, though the surface of some artificial leathers may rub and wear off with time. [2]

  7. Spray foam - Wikipedia

    en.wikipedia.org/wiki/Spray_foam

    Spray foam insulation or spray polyurethane foam (SPF) is an alternative to traditional building insulation such as fiberglass. A two-component mixture composed of isocyanate and polyol resin comes together at the tip of a gun, and forms an expanding foam that is sprayed onto roof tiles, concrete slabs, into wall cavities, or through holes ...

  8. Recycling codes - Wikipedia

    en.wikipedia.org/wiki/Recycling_codes

    Recycling codes on products. Recycling codes are used to identify the materials out of which the item is made, to facilitate easier recycling process.The presence on an item of a recycling code, a chasing arrows logo, or a resin code, is not an automatic indicator that a material is recyclable; it is an explanation of what the item is made of.

  9. Hot-melt adhesive - Wikipedia

    en.wikipedia.org/wiki/Hot-melt_adhesive

    The vinyl acetate monomer content is about 18–29 percent by weight of the polymer. High amounts of tackifiers and waxes are often used; an example composition is 30–40% of EVA copolymer (provides strength and toughness), 30–40% of tackifier resin (improves wetting and tack), 20–30% of wax (usually paraffin-based; reduces viscosity ...