A kind of preparation method of amphiphilic polymer anti-fog coating based on zwitterion
A technology of amphiphilic polymers and zwitterions, applied in coatings, chemical instruments and methods, and other chemical processes, can solve problems such as unsatisfactory durability, disappearance of super-hydrophilic properties of coatings, and loss of hydrophilicity. Achieve long-lasting anti-fog performance, excellent light transmittance, abrasion resistance and better water-soluble resistance
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Embodiment 1
[0042] (1) Preparation of amphiphilic random copolymer:
[0043] 5 parts (5 g in specific weight) of dimethylaminoethyl methacrylate, 20 parts of methyl methacrylate, and 0.5 parts of azobisisobutyronitrile were dissolved in 150 parts of toluene. After removing the air from the above reactant through an inert gas, the reaction was heated at 60° C. for 8 h. After the reaction, the reaction mixture was precipitated in n-hexane to obtain a light yellow solid, which was finally dried overnight in a vacuum oven.
[0044] (2) The preparation process of random polymer amphoteric ionization:
[0045] Dissolve 500 parts (body weight: 10 g) of the obtained random copolymer, 0.1 part of propane sultone and 550 parts of ethyl acetate, and react with stirring at 40° C. for 10 hours to obtain a clear solution. The reaction mixture was concentrated, precipitated in n-hexane to give a white solid, and finally dried in a vacuum oven overnight.
[0046] (3) Dissolve 50 parts of amphoteric io...
Embodiment 2
[0049] (1) Preparation of amphiphilic random copolymer
[0050] 20 parts (specifically 24 g in weight) of N-tert-butylaminoethyl methacrylate, 1 part of methyl methacrylate, and 3 parts of azobisisobutyronitrile were dissolved in 100 parts of ethyl acetate. After removing the air from the above reactant through an inert gas, react at 45°C for 24h. After the reaction, the reaction mixture was concentrated, precipitated in n-hexane to obtain a light yellow solid, and finally dried overnight in a vacuum oven.
[0051] (2) The preparation process of random polymer amphoteric ionization:
[0052] Dissolve 1000 parts (the specific weight is 10 g) of the prepared random copolymer, 20 parts of propane sultone and 500 parts of acetone, and react with stirring at 25° C. for 36 hours to obtain a clear solution. The reaction mixture was concentrated, precipitated in n-hexane to give a white solid, and finally dried in a vacuum oven overnight.
[0053] (3) 1000 parts of amphoteric ioniz...
Embodiment 3
[0056] (1) Preparation of amphiphilic random copolymer:
[0057] 50 parts (the specific weight is 56 g) of N,N-diethylaminopropyl methacrylate, 100 parts of methyl methacrylate, and 2.5 parts of azobisisobutyronitrile were dissolved in 1000 parts of xylene. After removing the air from the above reactant through an inert gas, react at 85°C for 16h. After the reaction, the reaction mixture was concentrated, precipitated in n-hexane to obtain a light yellow solid, and finally dried overnight in a vacuum oven.
[0058] (2) The preparation process of random polymer amphoteric ionization:
[0059] Dissolve 600 parts of the obtained random copolymer (the specific weight is 12 g), 20 parts of propane sultone and 5000 parts of tetrahydrofuran, and stir at 60° C. for 8 hours to obtain a clear solution. The reaction mixture was concentrated, precipitated in n-hexane to give a white solid, and finally dried in a vacuum oven overnight.
[0060] (3) 50 parts of amphoteric ionization rand...
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