Marine steel structure surface antifouling and anticorrosion preparation and preparation method thereof
A formula, solvent-free technology, applied in anti-corrosion coatings, anti-fouling/underwater coatings, biocide-containing paints, etc., can solve the problems of poor performance and short life
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Embodiment 1
[0043] (1) Protamine emulsion: protamine 68g, tea saponin 27g, Tween (80) 0.7g, deionized water 1350g, room temperature, 3500rpm high-speed shear emulsification 7min, obtain protamine emulsion about 1400g, place Store in 4°C refrigerator for later use.
[0044] (2) Graphene oxide-protamine composite emulsion: 7 g of graphene oxide was mixed with 1350 g of protamine emulsion in step (1), and emulsified at 30° C. at 3500 rpm for 15 minutes at high-speed shear. Then add 23g of 50% glutaraldehyde aqueous solution, 14g of 98wt% concentrated sulfuric acid, stir and react at a constant temperature of 30°C for 2.5h, and cross-link to obtain a graphene oxide-protamine composite emulsion. The reaction is closed and the quality is basically not lost.
[0045] (3) Epoxy resin polyol: Bisphenol A type epoxy resin (E-44, average molecular weight 3100-7000) 230g and diethylamine 74g are evenly mixed, then reflux and stir at 70°C for 5h to obtain epoxy resin Polyol, closed reaction, basicall...
Embodiment 2
[0051] (1) Protamine emulsion: protamine 20, tea saponin 10g, Tween (80) 0.1g, deionized water 1000g, room temperature, 3000rpm high-speed shear emulsification for 5min, obtain protamine emulsion about 1000g, place Store in 4°C refrigerator for later use.
[0052] (2) Graphene oxide-protamine composite emulsion: 1 g of graphene oxide and 1000 g of protamine emulsion from step (1) were mixed, and emulsified at 30° C. under high-speed shear at 3000 rpm for 10 min. Then add 10 g of glutaraldehyde aqueous solution with a mass concentration of 50%, 5 g of 98 wt% concentrated sulfuric acid, and stir at a constant temperature of 30° C. for 1 hour to cross-link to obtain a graphene oxide-protamine composite emulsion. The reaction is closed and the quality is basically not lost.
[0053] (3) Epoxy resin polyol: bisphenol A type epoxy resin (E-44, average molecular weight 3100-7000) 180g mixed with diethylamine 45g evenly, then reflux and stir at 75°C for 3h to obtain epoxy resin Polyo...
Embodiment 3
[0059] (1) Protamine emulsion: protamine 105, tea saponin 60g, Tween (80) 3g, deionized water 1500g, room temperature, 4000rpm speed high-speed shear emulsification 10min, obtain protamine emulsion about 1600g, place Store in 4°C refrigerator for later use.
[0060] (2) Graphene oxide-protamine composite emulsion: 14 g of graphene oxide and 1600 g of protamine emulsion in step (1) were mixed, and emulsified at 30° C. at a speed of 4000 rpm for 15 minutes under high-speed shear. Then add 42 g of glutaraldehyde aqueous solution with a mass concentration of 50%, 21 g of 98 wt% concentrated sulfuric acid, and stir at a constant temperature of 30°C for 4 hours to cross-link to obtain a graphene oxide-protamine composite emulsion. The reaction is sealed and the quality is basically not lost.
[0061] (3) Epoxy resin polyol: Bisphenol A type epoxy resin (E-44, average molecular weight 3100-7000) 290g and diethylamine 130g are evenly mixed, then reflux and stir at 75°C for 3 hours to ...
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