A kind of phthalocyanine sulfonic acid doped polyaniline anticorrosion coating
A technology of phthalocyanine-based sulfonic acid and anti-corrosion coatings, applied in the field of coatings, can solve the problems of complex, de-doping coating process, and low electrical conductivity, and achieve the effects of simple preparation, good water solubility, and improved electrical conductivity
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[0021] 3) Preparation of polyaniline anti-corrosion coating: at room temperature, mix phthalocyanine sulfonic acid doped polyaniline, aqueous epoxy resin solution, leveling agent and defoamer, disperse at 1500r / min for 10 minutes, filter Add curing agent and diluent and mix well to get the required anti-corrosion coating; Among them, the viscosity of the water-based epoxy resin solution is 400mPa·s, the solid content is 38-42%, and the pH is 7-9; phthalocyanine sulfonic acid doped poly The volume ratio of aniline, water-based epoxy resin solution, leveling agent, defoamer, curing agent and thinner is 9~18:70~90:0.25~0.45:0.5~1.5:1~2:30~50.
[0022] Among them, the leveling agent is one of the BYK-3xx series produced by BYK Chemical Company, the curing agent is methyl etherified melamine formaldehyde resin, the defoaming agent is simethicone or BYK-020, BYK-028, and the diluent is One of ethylene glycol methyl ether, ethylene glycol ethyl ether or ethylene glycol butyl ether; t...
Embodiment l
[0026] 1) Synthesis of intrinsic polyaniline
[0027]Weigh 10ml of aniline monomer into a three-necked flask, then add 200ml of 1mol / l hydrochloric acid, add 50ml of xylene after stirring for 5 minutes, and form a uniform milky white emulsion after stirring for about 30 minutes; Ammonium sulfate aqueous solution 30ml, reacted at 15°C for 5 hours, filtered under reduced pressure after breaking the emulsification, and washed with distilled water until the filtrate was colorless. The filtered product was treated with 350ml of 8% ammonia water for 16 hours, the pH value was 8, filtered under reduced pressure, and the filter cake was vacuum-dried at 45°C to constant weight to obtain blue intrinsic state polyaniline.
[0028] 2) Synthesis of polyaniline doped with copper phthalocyanine sulfonic acid
[0029] Dissolve 10g of intrinsic polyaniline in 50ml of N,N-dimethylformamide (DMF), then add 130ml of an aqueous solution containing 20g of copper phthalocyanine disulfonic acid, hea...
Embodiment 2
[0033] 1) Synthesis of intrinsic polyaniline
[0034] Weigh 10ml of aniline monomer into a three-necked flask, then add 220ml of 1mol / l hydrochloric acid, add 55ml of xylene after stirring for 5 minutes, and form a uniform milky white emulsion after stirring for about 30 minutes; slowly add 13.5g of 30ml of ammonium persulfate aqueous solution, reacted at 14°C for 5 hours, filtered under reduced pressure after breaking the emulsification, and washed with distilled water until the filtrate was colorless. The filtered product was treated with 350ml of 8% ammonia water for 16 hours, the pH value was 8, filtered under reduced pressure, and the filter cake was vacuum-dried at 45°C to constant weight to obtain blue intrinsic state polyaniline.
[0035] 2) Synthesis of polyaniline doped with copper phthalocyanine sulfonic acid
[0036] Dissolve 10g of intrinsic polyaniline in 50ml of DMF, then add 150ml of an aqueous solution containing 25g of copper phthalocyanine disulfonic acid, ...
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