HIGH PERFORMANCE P(VDF-TRFE) COPOLYMER FOR PYROELECTRIC CONVERSION

摘要

A process for purifying a P(VDF-TrFE) copolymer to produce an improved highperformance copolymer for pyroelectric conversion. Pellets of a P(VDF-TrFE)copolymer are dissolved in a solvent to form a solution. Subsequently,anhydrous ethanol is added to the solution to initiate copolymer gelprecipitation, after which the solution is separated to obtain the gelprecipitate, which is subsequently washed and dried. The resulting copolymerhas fewer impurities and higher resistivity, thereby being suitable for use inapplications such as pyroelectric converters. The purified copolymer alsoexhibits phase transition characteristics that allow for increased poweroutput.