TP Polyimide Gives Boost to PTFE Performance.New fine-powder grades of heat- and abrasion-resistant thermoplastic A polymer material that turns to liquid when heated and becomes solid when cooled. There are more than 40 types of thermoplastics, including acrylic, polypropylene, polycarbonate and polyethylene. polyimide Pronounced "poly-ih-mid." A type of plastic (a synthetic polymeric resin) originally developed by DuPont that is very durable, easy to machine and can handle very high temperatures. Polyimide is also highly insulative and does not contaminate its surroundings (does not outgas). are said to raise the abrasion abrasion /abra·sion/ (ah-bra´zhun) 1. a rubbing or scraping off through unusual or abnormal action; see also planing. 2. a rubbed or scraped area on skin or mucous membrane. , wear, and creep resistance of PTFE PTFE polytetrafluoroethylene. fluoropolymers in applications subject to high temperature and pressure. Aurum PD400 and PD450 powders from Mitsui Chemicals in Purchase, N.Y., are used at levels of 5% to 30% in automotive, appliance, and semiconductor parts such as valves, bearings, seals, tubes, and belts. With mean particle sizes as low as 6 microns, Aurum powders are said to disperse well in PTFE. |
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