tetrafluoroethylene-vinylidene fluoride copolymer in neat (no solvent) mechanical mixt. of metal and fluoropolymer (molar ratio 1:5-6) prepd. by hot pressing on press with heating plates; heated to 423 K; load of 20MPa was applied for 5 min; cooled to 353 K; load was removed; mixt. was withdrawn or heated to 673 K; MS; TG; DSC;