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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. Akemi (company) - Wikipedia

    en.wikipedia.org/wiki/Akemi_(company)

    Epoxy resin adhesives have the highest bonding strength of all natural stone adhesives but they harden relatively slowly. A further application area is the surface treatment of fissured and porous natural stone with highly fluid, transparent epoxy resin using the so-called "resinating process" (Latin: resina = resin).

  4. Wood glue - Wikipedia

    en.wikipedia.org/wiki/Wood_glue

    Wood glue is an adhesive used to tightly bond pieces of wood together. Many substances have been used as glues. Many substances have been used as glues. Traditionally animal proteins like casein from milk or collagen from animal hides and bones were boiled down to make early glues.

  5. Thermoplastic polyurethane - Wikipedia

    en.wikipedia.org/wiki/Thermoplastic_polyurethane

    Thermoplastic polyurethane (TPU) is any of a class of polyurethane plastics with many properties, including elasticity, transparency, and resistance to oil, grease, and abrasion. Technically, they are thermoplastic elastomers consisting of linear segmented block copolymers composed of hard and soft segments.

  6. Varnish - Wikipedia

    en.wikipedia.org/wiki/Varnish

    A table green wood-stained and varnished with three layers of polyurethane varnish. Polyurethane varnishes are typically hard, abrasion-resistant, and durable coatings. They are popular for hardwood floors but are considered by some wood finishers to be difficult or unsuitable for finishing furniture or other detailed pieces. Polyurethanes are ...

  7. 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.

  8. Impregnation resin - Wikipedia

    en.wikipedia.org/wiki/Impregnation_resin

    Although wood does have advantages over other building materials, it also has major disadvantages. Wood swells in high humidity and shrinks when the air is dry. [4] It can also decay if allowed to stay moist for extended periods, and has variable properties from board to board. Resin impregnation can improve all these properties.

  9. Wood finishing - Wikipedia

    en.wikipedia.org/wiki/Wood_finishing

    Larger gouges and splits are best repaired by patching the void with a piece of wood that matches the colour and grain orientation of the wood under repair. [7] Patching wood requires skill, but when done properly it is possible to create a repair that is very difficult to see. An alternative to patching is filling (sometimes known as stopping).

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