PEEK • Special plastics • Aikolon Oy Fundamentals Explained

Chemical compound Polyether ether ketone (PEEK) is a colourless natural polymer in the polyaryletherketone (PAEK) household, utilized in engineering applications. The polymer was very first developed in November 1978, later being introduced to the market by Victrex PLC, then Imperial Chemical Industries (ICI) in the early 1980s. Synthesis [modify] PEEK polymers are gotten by step-growth polymerization by the dialkylation of bisphenolate salts.

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The response is performed around 300 C in polar aprotic solvents - such as diphenyl sulfone. Residence [modify] PEEK is a semicrystalline thermoplastic with exceptional mechanical and chemical resistance homes that are kept to high temperature levels. The processing conditions used to mould PEEK can affect the crystallinity and thus the mechanical properties.

6 GPa and its tensile strength is 90 to 100 MPa. PEEK has Full Article of around 143 C (289 F) and melts around 343 C (662 F). Some grades have a beneficial operating temperature level of approximately 250 C (482 F). The thermal conductivity increases almost linearly with temperature in between space temperature and solidus temperature.

It is assaulted by halogens and strong Brnsted and Lewis acids, along with some halogenated substances and aliphatic hydrocarbons at heats. It is soluble in concentrated sulfuric acid at room temperature, although dissolution can take a really long time unless the polymer remains in a kind with a high surface-area-to-volume ratio, such as a fine powder or thin movie.

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Applications [modify] PEEK is utilized to make products for demanding applications, including bearings, piston parts, pumps, high-performance liquid chromatography columns, compressor plate valves, and electrical cable insulation. It is one of the few plastics compatible with ultra-high vacuum applications, that makes it suitable for aerospace, automotive, teletronic, and chemical markets. PEEK is utilized in medical implants, e.

PEEK is utilized in spinal blend gadgets and reinforcing rods. It is radiolucent, but it is hydrophobic causing it to not completely fuse with bone. PEEK seals and manifolds are commonly utilized in fluid applications. PEEK also carries out well in heat applications (approximately 500 F/260 C). Since of this and its low thermal conductivity, it is likewise used in FFF printing to thermally separate the hot end from the cold end.