Fluorine-containing epoxy resin, and preparation method and application thereof
A technology of epoxy resin and fluorine-containing alkyl group, applied in the field of fluorine-containing epoxy resin and its preparation, can solve the problems of insignificant improvement of coating hydrophobic performance and stain resistance, complicated synthesis method and high cost, and achieve excellent hydrophobic performance , the preparation method is simple, the effect of high fluorine content
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Embodiment 1
[0032] (1) Mix 1g of di-n-butyl malonate, 100g of toluene, and 5g of tetrabutylammonium hydroxide aqueous solution (25% in mass fraction) evenly, react at 30°C for 3 hours, distill off the toluene under reduced pressure, and then continue to add 20g Tetrahydrofuran, 5g containing trifluoroethyl methacrylate, mixed uniformly, reacted for 0.1h, and removed tetrahydrofuran by distillation under reduced pressure to obtain the reaction product;
[0033] (2) At 80°C, mix 10g of trifluoroacetic acid and 80g of dioxane to obtain a mixed solution, add the reaction product obtained in step (1) into the mixed solution for hydrolysis for 1.5 hours, and obtain carboxyl-terminated polyformaldehyde Propylene is trifluoroethyl ester;
[0034] (3) Under the protection of nitrogen, mix 5g of carboxyl-terminated polymethacrylic trifluoroethyl ester obtained in step (2), 5g of glycidyl alcohol and 100g of tetrahydrofuran, and then continue to add 0.05g of dehydrating agent N,N '-Dicyclohexylcarb...
Embodiment 2
[0038] (1) Mix 0.1g of di-n-butyl malonate, 30g of toluene, and 0.5g of tetrabutylammonium hydroxide aqueous solution (25% by mass fraction) evenly, react at 40°C for 20h, distill off the toluene under reduced pressure, and then continue Add 10 g of tetrahydrofuran and 25 g of hexafluorobutyl acrylate, mix well, react for 3 hours, and distill off the tetrahydrofuran under reduced pressure to obtain the reaction product;
[0039] (2) At 100°C, mix 60g of trifluoroacetic acid and 100g of dioxane to obtain a mixed solution, add the reaction product obtained in step (1) into the mixed solution and hydrolyze for 0.5h to obtain carboxyl-terminated polyacrylic acid Hexafluorobutyl;
[0040] (3) Under the protection of argon, mix 30g of carboxyl-terminated polyhexafluorobutyl acrylate obtained in step (2), 20g of glycidyl alcohol and 200g of pyridine, and then continue to add 4g of dehydrating agent 1-ethyl-( 3-Dimethylaminopropyl) carbodiimide hydrochloride and 2g catalyst 6-chloro-...
Embodiment 3
[0044] (1) Mix 10g of di-n-butyl malonate, 200g of toluene, and 40g of tetrabutylammonium hydroxide aqueous solution (mass fraction: 25%) evenly, react at 50°C for 20h, distill off the toluene under reduced pressure, and then continue to add 100g Tetrahydrofuran, 100g of hexafluorobutyl methacrylate, mixed uniformly, reacted for 3h, and obtained the reaction product after removing tetrahydrofuran by distillation under reduced pressure;
[0045] (2) At 0°C, mix 30g of trifluoroacetic acid and 100g of dioxane to obtain a mixed solution, add the reaction product obtained in step (1) into the mixed solution for hydrolysis for 6 hours, and obtain carboxyl-terminated polymethyl Hexafluorobutyl acrylate;
[0046] (3) Under the protection of nitrogen, mix 50g of carboxyl-terminated polyhexafluorobutyl methacrylate obtained in step (2), 20g of glycidyl alcohol and 100g of chloroform, and then continue to add 2.5g of dehydrating agent 1- Ethyl-(3-dimethylaminopropyl)carbodiimide hydroc...
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