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Polyether ether ketone (PEEK) is a colourless organic thermoplastic polymer in the polyaryletherketone (PAEK) family, used in engineering applications. It was invented in November 1978 [2] and brought to market in the early 1980s by part of Imperial Chemical Industries (ICI), the PEEK division was acquired through a management buyout, giving rise to Victrex PLC.
Polyetherketones (PEK for short) are polymers whose molecular backbone contain alternating ketone (R-CO-R) and Ether (R-O-R) functionalities. The most common are Polyaryletherketones (PAEK), in which there is an aryl group linked in the (1–4)-position between each of the functional groups.
Multi-layer insulation (MLI) is thermal insulation composed of multiple layers of thin sheets and is often used on spacecraft and cryogenics. Also referred to as superinsulation, [ 1 ] MLI is one of the main items of the spacecraft thermal design , primarily intended to reduce heat loss by thermal radiation .
The average annual gas bill will be around 50% higher per year for homes with an energy performance certificate score of F.
PEEK (polyetheretherketone) has relatively low out-gassing values (0.31% total mass loss (TML), 0.00% collected volatile condensable material (CVCM), 0.06% water vapour regained (WVR)). Kapton is a type of polyimide film, has very low outgassing. Kapton is discouraged if a ceramic alternative can be used. [3]
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