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Definition: 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). Vespel and Kapton are examples of polyimide products from DuPont. See tape automated bonding.