A UV anti-adhesive and anti-acid protective film based on active fluorine-containing polyimide
A fluorine-containing polyimide, protective film technology, used in film/sheet adhesives, adhesives, anti-corrosion coatings, etc., can solve the problems of anti-sticking, high temperature resistance and poor corrosion resistance
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Embodiment 1
[0018] A preparation method of active fluorine-containing polyimide oligomer X, comprising the following steps:
[0019] 30 parts by weight of difluoropyromellitic anhydride and 10 parts by weight of p-phenylenediamine were added to the reaction device, a diluent was added to prepare a solution with a mass fraction of 60%, nitrogen gas was passed for 30 minutes and the stirrer was started to stir evenly. Heat to 100°C for 3 hours; then slowly raise the temperature to 150°C, add 0.5 parts by weight of triisopropanol aluminate, and continue the reflux reaction at 150°C for 8 hours; then slowly cool down to 120°C, slowly add 3 parts by weight of hydroxybutyl acrylate ester, continue to react for 4h, then cooled to room temperature, and then distilled off the diluent under reduced pressure to obtain active fluorine-containing polyimide oligomer X.
Embodiment 2
[0021] A preparation method of active fluorine-containing polyimide oligomer Y, comprising the following steps:
[0022] 35 parts by weight of difluoropyromellitic anhydride and 10 parts by weight of p-phenylenediamine were added to the reaction device, a diluent was added to prepare a solution with a mass fraction of 70%, nitrogen was passed for 20 minutes and the stirrer was started to stir evenly. Heat to 120°C for 2 hours; then slowly raise the temperature to 160°C, add 0.3 parts by weight of tetraisopropanol titanate, and continue the reflux reaction at 160°C for 7 hours; then slowly cool down to 130°C, slowly add 5 parts by weight of methacrylic acid Hydroxybutyl ester, continued to react for 3h, then cooled to room temperature, and then distilled off the diluent under reduced pressure to obtain active fluorine-containing polyimide oligomer Y.
Embodiment 3
[0024] A preparation method of active fluorine-containing polyimide oligomer Z, comprising the following steps:
[0025] 32 parts by weight of difluoropyromellitic anhydride and 10 parts by weight of p-phenylenediamine were added to the reaction device, a diluent was added to prepare a solution with a mass fraction of 50%, nitrogen gas was passed for 15 minutes and the stirrer was started to stir evenly. Heat to 130°C for 1 hour; then slowly raise the temperature to 180°C, add 0.05 parts by weight of tetrabutyl titanate, and continue the reflux reaction at 150°C for 4 hours; then slowly cool down to 140°C, slowly add 6 parts by weight of 5-amino-1 - Pentene, continue to react for 2h, then cool to room temperature, and then distill off the diluent under reduced pressure to obtain the active fluorine-containing polyimide oligomer Z.
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