Technique known as "melt pressing" produces films from solid, insoluble, semicrystalline polymers in less than 5 minutes. Amount of crystallinity and possibly final crystal structure of film controlled in process. Induction heating, using gapped toroidal core, melts sample. Toroidal core and capacitor form tuned circuit. Below induction heating toroid, layer of insulation prevents heat transfer from insoluble film to induction heating apparatus.
Melt-Pressed Films of Insoluble Semicrystalline Polymers
NASA Tech Briefs ; 9 , 3
1986-01-01
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Englisch
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