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  2. Polyisocyanurate - Wikipedia

    en.wikipedia.org/wiki/Polyisocyanurate

    The generalised chemical structure of polyisocyanurate showing the isocyanurate group. The polyols are abbreviated as R-groups.. Polyisocyanurate (/ ˌ p ɒ l ɪ ˌ aɪ s oʊ s aɪ ˈ æ nj ʊər eɪ t /), also referred to as PIR, polyol, or ISO, is a thermoset plastic [1] typically produced as a foam and used as rigid thermal insulation.

  3. Pipe insulation - Wikipedia

    en.wikipedia.org/wiki/Pipe_insulation

    Pipe insulation made from rigid Phenolic, PIR, or PUR foam insulation is common in some countries. Rigid-foam insulation has minimal acoustic performance but can exhibit low thermal-conductivity values of 0.021 W/(m·K) or lower, allowing energy-saving legislation to be met whilst using reduced insulation thicknesses. [8]

  4. Polyurethane - Wikipedia

    en.wikipedia.org/wiki/Polyurethane

    These low molecular weight, aromatic polyester polyols are used in rigid foam, and bring low cost and excellent flammability characteristics to polyisocyanurate (PIR) boardstock and polyurethane spray foam insulation. Specialty polyols include polycarbonate polyols, polycaprolactone polyols, polybutadiene polyols, and polysulfide polyols. The ...

  5. Foam glass - Wikipedia

    en.wikipedia.org/wiki/Foam_glass

    Foam glass is fireproof, waterproof, non-toxic, corrosion-resistant, non-aging, non-radioactive, and insulating. It is a stable building exterior wall and roof insulation and sound insulation material. Foam glass does not absorb water. The cells are mostly closed, so there is no capillary rise.

  6. Insulated pipe - Wikipedia

    en.wikipedia.org/wiki/Insulated_pipe

    Both standards require use of polyurethane foam for thermal insulation and HDPE for casing. Insulated pipelines are usually assembled from pipes of 6 metres (20 ft), 12 metres (39 ft), or 16 metres (52 ft) in length, directly buried in soil in depths of commonly 0.6–1.2 metres (2 ft 0 in – 3 ft 11 in).

  7. 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 ...