Polyesters based on 2, 3, 5, 6-tetrafluoro-1, 4-terephthalyl alcohol, methods of making and articles thereof

The invention relates to polyester based on 2, 3, 5, 6-tetrafluoro-1, 4-terephthalyl alcohol and a preparation method and application thereof.The preparation method comprises the following steps that a first mixed reaction system containing binary acid or ester thereof, dihydric alcohol and an esterification or ester exchange catalyst is subjected to a reaction under the protective atmosphere, and an intermediate product is obtained, the binary acid or ester thereof comprises first binary acid or ester thereof, the first binary acid or ester thereof is selected from naphthalic acid or ester thereof, the dihydric alcohol comprises first dihydric alcohol and second dihydric alcohol, and the first dihydric alcohol is selected from 2, 3, 5, 6-tetrafluoro-1, 4-terephthalyl alcohol; and a second mixed reaction system containing the intermediate product and the stabilizer is subjected to a reaction under the vacuum condition, the obtained polyester has the properties of high modulus, high strength, heat resistance,