Polymer is hot stuff at high temperatures
A
Victrex product story
Edited by the Engineeringtalk editorial team
Jul 16, 2002
Peek-HT polymer is a novel high-performance material developed for applications that demand superior higher temperature resistance.
Peek-HT polymer is a novel high-performance material developed for applications that demand superior higher temperature resistance.
With a glass transition temperature of 157C (315F) and a melting temperature of 374C (705F), this semicrystalline, unreinforced polymer delivers extended high-temperature performance, while offering all the key characteristics of natural Peek polymer, including toughness, strength and chemical resistance.
With its ease of processing, high precision reproducibility and long-term product reliability, Peek-HT polymer offers manufacturers a premium material which is still a more cost-effective, lightweight alternative to metals.
Key industries where there is a demand for extreme heat resistance applications are for example the automotive, aerospace and engineering industries.
Typical applications include engine compartment applications, headlamp reflectors, aircraft components, sub sea connectors, heat exchanger parts and industrial valve linings.
A period of intense testing by Victrex has proven the superior performance of Peek-HT compared with other high performance materials.
Compared with the performance of standard Peek polymer, unreinforced Peek-HT polymer provides: superior high temperature performance; the ability to retain mechanical and physical properties to temperatures up to 30C (54F) higher than Peek polymer; up to three times the wear resistance of Peek polymer (450G) at high temperatures; long-term creep and fatigue resistance over a wide temperature range; substantially higher tensile strength and flexural modulus at 250C (482F); improved compressive strength; exceptional resistance to chemicals, solvents and fuels; inherent low flammability, low smoke emission; good electrical properties; excellent hydrolysis resistance; consistent ease of processing; and availability in powder or granules.
This important addition to the Victrex portfolio has already been fully tested and commercially proven in down-hole and sub-sea environments.
It has been specified for the body of an 8-pin connector used in oilfield exploration and production, where it offers long-term product reliability after prolonged exposure to extreme temperature and pressure levels.
Furthermore, the Peek-HT polymer eliminated product failure problems associated with assembly and secondary operations, as it is injection moulded as a single component.
Peek-HT polymer is available as powder, Peek-HT P22, or granules, Peek-HT G22.
(This was Engineeringtalk's Top Story on 15 July 2002).
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