Saturday, September 19, 2009

897

A Colorless Thermoplastic Peek Polyetheretherketone
A polymer obtained by step growth process of polymerization is a colorless thermoplastic called peek polyetheretherketone. Due to its high melting point it has outstanding chemical, electrical properties. It can only be attacked by some of the acids and compounds at the higher temperature. Peek is a tough material so that it can be used in the applications where strength is needed like insulation of wires, pumps, bearing etc. It absorbs very less water as it is water resistance material. Due to its high bearable temperature it has good chemical confrontation or less reactive. Up till high temperature i.e. 250°C it doesn’t loose its properties and remain the same. It is not affected by an exposure to hot steam for a continuous time period.

There are many standards of peek polyetheretherketone available. One is the peek which is unfilled which is unbreakable means high strength and also malleable and ductile. It is available in sheets or in form of rods. Another is the filled that is glass filled which has more strength. It augments the flexural modulus and decrease the expansion rate. It is in brown color. Another is carbon filled which increases the rigidity of the peek. It is black in color.

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