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  2. Thermosetting polymer - Wikipedia

    en.wikipedia.org/wiki/Thermosetting_polymer

    In materials science, a thermosetting polymer, often called a thermoset, is a polymer that is obtained by irreversibly hardening ("curing") a soft solid or viscous liquid prepolymer . [1] Curing is induced by heat or suitable radiation and may be promoted by high pressure or mixing with a catalyst .

  3. List of polyurethane applications - Wikipedia

    en.wikipedia.org/wiki/List_of_polyurethane...

    Thermoset polyurethanes are also used as a protective coating against abrasion. Cast polyurethane over materials such as steel will absorb particle impact more efficiently. Polyurethanes have been proven to last in excess of 25 years in abrasive environments where non-coated steel would erode in less than 8 years.

  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. 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. Thermoset polymer matrix - Wikipedia

    en.wikipedia.org/wiki/Thermoset_polymer_matrix

    A thermoset polymer matrix is a synthetic polymer reinforcement where polymers act as binder or matrix to secure in place incorporated particulates, fibres or other reinforcements. They were first developed for structural applications, [1] such as glass-reinforced plastic radar domes on aircraft and graphite-epoxy payload bay doors on the Space ...

  7. Thermoplastic - Wikipedia

    en.wikipedia.org/wiki/Thermoplastic

    [3] [4] Thermoplastics differ from thermosetting polymers (or "thermosets"), which form irreversible chemical bonds during the curing process. Thermosets do not melt when heated, but typically decompose and do not reform upon cooling. Stress-strain graph of a thermoplastic material

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