Antibacterial high-temperature-aging-resistant polyimide film and preparation method thereof
A technology of polyimide film and high temperature resistance, which is applied in the field of polyimide film to achieve the effect of improving toughness, long-lasting antibacterial performance, and excellent long-term antibacterial performance
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[0031] Example 1
[0032] A preparation method of antibacterial, high temperature and aging resistant polyimide film includes the following steps:
[0033] (1) Under the protection of argon, first add 4,4'-oxydiphenylamine and 4,4'-diaminodiphenyl ether solvents, after ultrasonic dissolution is complete, then add pyromellitic dianhydride and dimethylol Hydantoin, after 15 hours of reaction, air bubbles are extracted in vacuum to obtain polyamic acid containing antibacterial functional monomer; wherein the content of dimethylol hydantoin is 1% of the total mass of the antibacterial, high temperature and aging resistant polyimide film.
[0034] (2) Under argon protection, add silica and activate it at 280°C for 12 hours under reflux of anhydrous toluene; use tridecafluorooctyltriethoxysilane to perform surface treatment on the activated silica;
[0035] (3) Add maleic anhydride and the surface-treated silica obtained in step (2) to the polyamic acid containing antibacterial monomers obt...
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[0037] Example 2
[0038] A preparation method of antibacterial, high temperature and aging resistant polyimide film includes the following steps:
[0039] (1) Under the protection of argon, first add 4,4'-oxydiphenylamine and 4,4'-diaminodiphenyl ether solvents, after ultrasonic dissolution is complete, then add pyromellitic dianhydride and dimethylol Hydantoin, after 15 hours of reaction, air bubbles are extracted in vacuum to obtain polyamic acid containing antibacterial functional monomer; wherein the content of dimethylol hydantoin is 1% of the total mass of the antibacterial, high temperature and aging resistant polyimide film.
[0040] (2) Under argon protection, add silica and activate it at 280°C for 12 hours under reflux of anhydrous toluene; use tridecafluorooctyltriethoxysilane to perform surface treatment on the activated silica; The silica is nano-silica with a particle size of 100-300nm.
[0041] (3) Add maleic anhydride and the surface-treated silica obtained in step ...
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