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  2. Red List building materials - Wikipedia

    en.wikipedia.org/wiki/Red_List_building_materials

    Red List building materials. Red List Building Materials contain chemicals that have been designated as harmful to living creatures, including humans, or the environment. The Living Building Challenge Red List is maintained by the International Living Future Institute, and is the only organization that uses the term 'Red List'.

  3. Materials for use in vacuum - Wikipedia

    en.wikipedia.org/wiki/Materials_for_use_in_vacuum

    Torr-Seal, or its generic equivalent Hysol-1C (US brand name) or Loctite 9492 (EU brand name), is an epoxy with resin and hardener for use in vacuum environments. It will begin to degrade at high temperatures but otherwise is very stable with very little outgassing. Other vacuum-rated epoxies are also available.

  4. Polyurethane - Wikipedia

    en.wikipedia.org/wiki/Polyurethane

    Polyurethane (/ ËŒpÉ’liˈjÊŠÉ™rəˌθeɪn, - jʊəˈrÉ›θeɪn /; [1] often abbreviated PUR and PU) refers to a class of polymers composed of organic units joined by carbamate (urethane) links. In contrast to other common polymers such as polyethylene and polystyrene, polyurethane is produced from a wide range of starting materials.

  5. Blowing agent - Wikipedia

    en.wikipedia.org/wiki/Blowing_agent

    Blowing agent. A blowing agent is a substance which is capable of producing a cellular structure via a foaming process in a variety of materials that undergo hardening or phase transition, such as polymers, plastics, and metals. [1] They are typically applied when the blown material is in a liquid stage. The cellular structure in a matrix ...

  6. Thermoplastic polyurethane - Wikipedia

    en.wikipedia.org/wiki/Thermoplastic_polyurethane

    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.

  7. Flame retardant - Wikipedia

    en.wikipedia.org/wiki/Flame_retardant

    Flame retardant. Open-flame tests compare the flammability of untreated polyurethane foam (top) and an identical foam sample surface treated with a sandwich-like coating incorporating layered double hydroxides. By 90 seconds after ignition the untreated foam is completely consumed. Flame retardants are a diverse group of chemicals that are ...

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