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  2. Ultra-high-molecular-weight polyethylene - Wikipedia

    en.wikipedia.org/wiki/Ultra-high-molecular...

    Ultra-high-molecular-weight polyethylene (UHMWPE, UHMW) is a subset of the thermoplastic polyethylene. Also known as high-modulus polyethylene (HMPE), it has extremely long chains, with a molecular mass usually between 3.5 and 7.5 million amu. [1] The longer chain serves to transfer load more effectively to the polymer backbone by strengthening ...

  3. IPX Ultra-high-molecular-weight polyethylene - Wikipedia

    en.wikipedia.org/wiki/IPX_Ultra-high-molecular...

    IPX 2000 Ultra-high-molecular-weight polyethylene (IPX 2000, IPX UHMW, IPX UHMW-PE, IPX-UHMW-PE) is an engineered polyethylene compound developed to maintain many traits of UHMW, while increasing abrasion resistance, UV stability and decreasing friction and thermal expansion. [1] IPX UHMW was developed in the early 2000s by material scientists ...

  4. Polyethylene - Wikipedia

    en.wikipedia.org/wiki/Polyethylene

    Polyethylene was first synthesized by the German chemist Hans von Pechmann, who prepared it by accident in 1898 while investigating diazomethane. [12] [a] [13] [b] When his colleagues Eugen Bamberger and Friedrich Tschirner characterized the white, waxy substance that he had created, they recognized that it contained long −CH 2 − chains and termed it polymethylene.

  5. List of most expensive philatelic items - Wikipedia

    en.wikipedia.org/wiki/List_of_most_expensive...

    This is a list of the highest known prices paid for philatelic items, including stamps and covers. The current record price for a single stamp is US$ 9,480,000 paid for the British Guiana 1c magenta. [1][2] This list is ordered by consumer price index inflation-adjusted value (in bold) in millions of United States dollars in 2023. [note 1 ...

  6. Cross-linked polyethylene - Wikipedia

    en.wikipedia.org/wiki/Cross-linked_polyethylene

    A cross-linked polyethylene (PEX) pipe. Cross-linked polyethylene, commonly abbreviated PEX, XPE or XLPE, is a form of polyethylene with cross-links.It is used predominantly in building services pipework systems, hydronic radiant heating and cooling systems, domestic water piping, insulation for high tension (high voltage) electrical cables, and baby play mats.

  7. Poly(methyl methacrylate) - Wikipedia

    en.wikipedia.org/wiki/Poly(methyl_methacrylate)

    Poly (methyl methacrylate) (PMMA) is the synthetic polymer derived from methyl methacrylate. It is used as an engineering plastic, and it is a transparent thermoplastic. PMMA is also known as acrylic, acrylic glass, as well as by the trade names and brands Crylux, Hesalite, Plexiglas, Acrylite, Lucite, and Perspex, among several others (see below).

  8. International Medical Products Price Guide - Wikipedia

    en.wikipedia.org/wiki/International_Medical...

    International Medical Products Price Guide, formerly known as International Drug Price Indicator Guide, lists drug price information for WHO Essential Medicines. [1] It is maintained by Management Sciences for Health (MSH) on behalf of the World Health Organization. [1] The guide has been published annually since 1986 with the World Health ...

  9. Engineering plastic - Wikipedia

    en.wikipedia.org/wiki/Engineering_plastic

    Engineering plastic. An ABS 3D bell manufactured with a 3D printer. Engineering plastics[1] are a group of plastic materials that have better mechanical or thermal properties than the more widely used commodity plastics (such as polystyrene, polyvinyl chloride, polypropylene and polyethylene). Engineering plastics are more expensive than ...

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