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  2. 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 ...

  3. Building insulation material - Wikipedia

    en.wikipedia.org/wiki/Building_insulation_material

    Spray foam is a type of insulation that is sprayed in place through a gun. Polyurethane and isocyanate foams are applied as a two-component mixture that comes together at the tip of a gun, and forms an expanding foam. Cementitious foam is applied in a similar manner but does not expand.

  4. 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.

  5. 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 ...

  6. Polytetrafluoroethylene - Wikipedia

    en.wikipedia.org/wiki/Polytetrafluoroethylene

    Some PTFE parts are made by cold-moulding, a form of compression molding. [44] Here, fine powdered PTFE is forced into a mould under high pressure (10–100 MPa). [44] After a settling period, lasting from minutes to days, the mould is heated at 360 to 380 °C (680 to 716 °F), [44] allowing the fine particles to fuse into a single mass. [45]

  7. List of insulation materials - Wikipedia

    en.wikipedia.org/wiki/List_of_insulation_materials

    This is a list of insulation materials used around the world.. Typical R-values are given for various materials and structures as approximations based on the average of available figures and are sorted by lowest value.

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  9. Automotive paint - Wikipedia

    en.wikipedia.org/wiki/Automotive_paint

    Innovations are taking place in paint industry as well. These days, automotive paints come in liquid form, spray form, and powder forms:- Liquid: Usually polyurethane paints. Compressor is needed to apply. Spray: This is as same as perfume in spray bottle. Made for DIYer. Powder or additive: Paints in powder form applied after mixing in paint ...

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