CN101798479A - Highly-corrosion-resistant water-based anticorrosive paint for hydrophilic coated aluminum foil, application and using method - Google Patents
Highly-corrosion-resistant water-based anticorrosive paint for hydrophilic coated aluminum foil, application and using method Download PDFInfo
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Abstract
The invention discloses a highly-corrosion-resistant water-based anticorrosive paint for a hydrophilic coated aluminum foil, which comprises the following components in percentage by weight: 35 to 55 percent of polyacrylic emulsion, 5 to 15 percent of amine resin, 0.1 to 1.0 percent of flatting agent, 0.1 to 1.0 percent of foam suppressor, 0.1 to 1.0 percent of antifreeze, 5 to 14 percent of coalescent, 1 to 4 percent of water-based epoxy resin and 20 to 40 percent of de-ionized water. A method for preparing the paint comprises the following steps: 1) preparing the polyacrylic emulsion; 2) preparing the water-based epoxy resin; and 3) adding the polyacrylic emulsion prepared in the step 1), the water-based epoxy resin prepared in the step 2) and the other components in proportion into a high-speed dispersing machine for stirring and dispersing. The method for using the paint comprises the step of: coating the prepared highly-corrosion-resistant water-based anticorrosive paint onto the front and back of the aluminum foil by adopting a roller coat process, wherein the coating is performed under the conditions that the curing temperature is 20 to 250 DEG C and curing time is 15 to 40 seconds. The highly-corrosion-resistant water-based anticorrosive paint improves the corrosion resistance of the hydrophilic coated aluminum foil and meets the use requirement of an air conditioner with high corrosion resistant requirement.
Description
Technical field
The present invention relates to a kind of highly corrosion resistant water-based anticorrosive paint, the hydrophilic coated aluminum foil highly corrosion resistant water-based anticorrosive paint that is adopted on particularly a kind of air conditioner radiation fin.The invention still further relates to the preparation method and the using method of this coating.
Background technology
Along with the development of refrigeration industries such as air-conditioning, heat exchanger of air condition is had higher requirement to anticorrosion too except that adopting hydrophilic coated aluminum foil to make the fin.Interchanger generally is assembled into two devices (condenser and vaporizer) by fin and metal tube (being generally copper pipe), the used for air conditioner radiation fin coated aluminum foil is because of the difference of its environment for use (occasion), antiseptic power to fin also has difference, and the dry film amount of hydrophilic coated aluminum foil preservative coat is controlled at 1.0～1.5g/m
2500 hours neutral salt spray test 〉=9.5 of general air-conditioning requirement hydrophilic coated aluminum foil grade, the air-conditioning that is used for environment such as large ship, oceanic climate, coastland and high corrosion then requires the neutral salt spray test time to reach more than 1000 and 1000 hours, and common water-based anticorrosive paint can't satisfy above-mentioned requirements.
Summary of the invention
The objective of the invention is deficiency, a kind of hydrophilic coated aluminum foil highly corrosion resistant water-based anticorrosive paint is provided, be applicable to the making of the air-conditioning condenser and the vaporizer of highly corrosion resistant requirement at existing water-based anticorrosive paint existence.Another object of the present invention provides a kind of preparation method and using method of this coating.
For achieving the above object, technical scheme of the present invention is: a kind of hydrophilic coated aluminum foil highly corrosion resistant water-based anticorrosive paint, the component and the weight proportion of this coating are: ACRYLIC EMULSION 35-55%, aminoresin 5-15%, flow agent 0.1-1.0%, defoamer 0.1-1.0%, frostproofer 0.1-1.0%, film coalescence aid 5-14%, aqueous epoxy resins 1-4%, deionized water 20-40%, wherein:
Described aminoresin is one or more the mixture among R717, the R747;
Described flow agent is one or more the mixture of BYK310, BYK306, BYK341;
Described defoamer is any one or a few the mixture among BYK035, BYK040, the BYK073;
Described frostproofer is ethylene glycol or propylene glycol;
Described film coalescence aid is any one or a few the mixture in butyl glycol ether, propylene glycol butyl ether, the condensed ethandiol monobutyl ether acetate.
The above-mentioned hydrophilic coated aluminum foil preparation method of highly corrosion resistant water-based anticorrosive paint may further comprise the steps:
1) ACRYLIC EMULSION prepares by following component and weight proportion: vinylbenzene 4-12%, methyl methacrylate 3-12%, butyl acrylate 3-10%, ethyl propenoate 3-10%, functional monomer 3-10%, vinylformic acid 1-5%, emulsifying agent 1-4%, initiator 0.1-1%, all the other are water, and above-mentioned substance is emulsified into pre-emulsified monomer emulsion through emulsifying device; Pre-emulsified monomer emulsion droplets being added has in the reactor of part deionized water again, and the dropping time is 2-5 hour, and temperature is controlled to be 75-90 ℃; Reaction times is 6-8 hour, makes the ACRYLIC EMULSION that solid content is 30-40%, wherein:
Described functional monomer is one or more the mixture in hydroxyethyl methylacrylate, Rocryl 410, Hydroxyethyl acrylate, the glycidyl methacrylate;
Described emulsifying agent is the allyloxy polyoxyethylene nonylphenol ether, the mixture of one or more in polyoxyethylene nonylphenol ether ammonium sulfate, the allyloxy polyoxyethylene nonylphenol ether sodium sulfonate;
Described initiator is a kind of in ammonium persulphate, the Potassium Persulphate;
2) aqueous epoxy resins prepares by following component and weight proportion: Resins, epoxy 15-25%, solvent 15-25%, strong phosphoric acid 4-12%, catalyzer 0.1-1%, above-mentioned substance is added in the flask, be heated to 150-200 ℃, be incubated 7-10 hour, the cooling back adds the deionized water high speed dispersion, make the aqueous epoxy resins that solid content is 24-35%, wherein:
Described Resins, epoxy is one or more the mixture among E-44, E-20, the E-12;
Described solvent is any one or a few the mixture in butyl glycol ether, propylene glycol butyl ether, the condensed ethandiol monobutyl ether acetate;
Described catalyzer is a kind of in triphenylphosphine or the tributyl brometo de amonio;
3) ACRYLIC EMULSION that step 1) is made, step 2) aqueous epoxy resins that makes and all the other components join by proportioning carries out dispersed with stirring in the high speed dispersor, treat that material all is uniformly dispersed can prepare the highly corrosion resistant water-based anticorrosive paint that solid content is 20-30% after the unanimity.
This hydrophilic coated aluminum foil using method of highly corrosion resistant water-based anticorrosive paint, may further comprise the steps: on coating apparatus, adopt roller coating technology to be coated on the tow sides of aluminium foil the highly corrosion resistant water-based anticorrosive paint for preparing, condition of cure is during coating: solidification value is that 200～250 ℃, set time are 15～40 seconds.
This method comprises two aspects of coating method, condition of cure of aluminium foil.Wherein the selection of coating method is most important to obtaining the coating that coating is even, thickness is suitable, performance is qualified.The present invention adopts roller coating technology, is that rotating speed guarantees that recently coat-thickness keeps uniformity by regulating roll gap and roller.Condition of cure then directly influences outward appearance, sticking power and the performance index thereof of coating.The present invention determines that solidification value is that 200～250 ℃, set time are 15～40S, can guarantee the performance index that coating is up to specification.
The invention has the beneficial effects as follows: the present invention compared with prior art, its remarkable advantage is: obviously improve the erosion resistance of hydrophilic coated aluminum foil, be embodied in neutral salt spray test 1000 hours 〉=9.8 grades.The neutral salt spray test method is 5% sodium chloride aqueous solution, 35 ± 2 ℃ of probe temperatures, and spraying continuously, spray amount is 1-2g/80cm
2/ h.Satisfy the service requirements of the conditioner that the highly corrosion resistant requirement is arranged.
Embodiment
Embodiment 1
The component and the weight proportion of highly corrosion resistant water-based anticorrosive paint are: ACRYLIC EMULSION 45%, aminoresin (R717) 12%, flow agent (BYK310) 0.3%, defoamer (BYK035) 0.2%, frostproofer (ethylene glycol) 0.3%, film coalescence aid (butyl glycol ether) 5%, aqueous epoxy resins (the epoxy phosphate ester aqueous dispersion of epoxy resin E-44 and phosphating reaction preparation) 2.2%, deionized water 35%.
The preparation method of above-mentioned coating may further comprise the steps:
1) ACRYLIC EMULSION prepares by following component and weight proportion: with vinylbenzene (7%), methyl methacrylate (5%), butyl acrylate (6%), ethyl propenoate (5%), functional monomer (hydroxyethyl methylacrylate) (6%), vinylformic acid (1.5%), emulsifying agent (allyloxy polyoxyethylene nonylphenol ether) (1.3%), initiator (ammonium persulphate) (0.2%), all the other waters are emulsified into pre-emulsified monomer emulsion through emulsifying device.Pre-again emulsified monomer emulsion droplets adds to be had in the reactor of part deionized water, and the dropping time is 2.5 hours, and temperature is controlled to be 76 ℃.Reaction times is 7.5 hours.Make solid content and be 32% ACRYLIC EMULSION.
2) aqueous epoxy resins prepares by following component and weight proportion: Resins, epoxy (E-44) (18%), solvent (butyl glycol ether) (15%), strong phosphoric acid (7%), catalyzer (triphenylphosphine) (0.1%) are added in the flask, be heated to 150 ℃, be incubated 10 hours, cooling back adds the deionized water high speed dispersion, makes solid content and be 25% aqueous epoxy resins.
3) ACRYLIC EMULSION that step 1) is made, step 2) aqueous epoxy resins that makes and all the other components join by proportioning carries out dispersed with stirring in the high speed dispersor, treating all to be uniformly dispersed material, can to prepare solid content after the unanimity be 27% highly corrosion resistant water-based anticorrosive paint.
The coating process of highly corrosion resistant water-based anticorrosive paint is:
Adopt roller coating technology to be coated on the tow sides of aluminium foil the highly corrosion resistant water-based anticorrosive paint for preparing, condition of cure is during coating: solidification value is that 220 ℃, set time are 30 seconds.
Embodiment 2
The component and the weight proportion of highly corrosion resistant water-based anticorrosive paint are: ACRYLIC EMULSION 35%, aminoresin (R747) 15%, flow agent (BYK306) 1.0%, defoamer (BYK040) 0.4%, frostproofer (propylene glycol) 0.5%, film coalescence aid (propylene glycol butyl ether) 7%, aqueous epoxy resins (the epoxy phosphate ester aqueous dispersion of Resins, epoxy E-20 and phosphating reaction preparation) 4%, deionized water 37.1%.
The preparation method of above-mentioned coating may further comprise the steps:
1) ACRYLIC EMULSION prepares by following component and weight proportion: with vinylbenzene (5%), methyl methacrylate (6%), butyl acrylate (5%), ethyl propenoate (6.9%), functional monomer (Rocryl 410) (5%), vinylformic acid (1%), emulsifying agent (polyoxyethylene nonylphenol ether ammonium sulfate) (1%), initiator (Potassium Persulphate) (0.1%), all the other waters are emulsified into pre-emulsified monomer emulsion through emulsifying device.Pre-again emulsified monomer emulsion droplets adds to be had in the reactor of part deionized water, and the dropping time is 3 hours, and temperature is controlled to be 80 ℃.Reaction times is 7.8 hours.Make solid content and be 30% ACRYLIC EMULSION.
2) aqueous epoxy resins prepares by following component and weight proportion: Resins, epoxy (E-20) (19%), solvent (propylene glycol butyl ether) (18%), strong phosphoric acid (7%), catalyzer (tributyl brometo de amonio) (0.2%) are added in the flask, be heated to 160 ℃, be incubated 9 hours, cooling back adds the deionized water high speed dispersion, makes solid content and be 26% aqueous epoxy resins.
3) ACRYLIC EMULSION that step 1) is made, step 2) aqueous epoxy resins that makes and all the other components join by proportioning carries out dispersed with stirring in the high speed dispersor, treating all to be uniformly dispersed material, can to prepare solid content after the unanimity be 26.5% highly corrosion resistant water-based anticorrosive paint.
The coating process of highly corrosion resistant water-based anticorrosive paint is:
Adopt roller coating technology to be coated on the tow sides of aluminium foil the highly corrosion resistant water-based anticorrosive paint for preparing, condition of cure is during coating: solidification value is that 200 ℃, set time are 35 seconds.
Embodiment 3
The component and the weight proportion of highly corrosion resistant water-based anticorrosive paint are: ACRYLIC EMULSION 50%, aminoresin (mixture of R717, R747) 10%, flow agent (BYK341) 0.5%, defoamer (BYK073) 0.6%, frostproofer (ethylene glycol) 0.8%, film coalescence aid (a condensed ethandiol monobutyl ether acetate) 10%, aqueous epoxy resins (the epoxy phosphate ester aqueous dispersion of Resins, epoxy E-12 and phosphating reaction preparation) 2%, deionized water 26.1%.
The preparation method of above-mentioned coating may further comprise the steps:
1) ACRYLIC EMULSION prepares by following component and weight proportion: with vinylbenzene (8%), methyl methacrylate (7%), butyl acrylate (7%), ethyl propenoate (4%), functional monomer (Hydroxyethyl acrylate) (3.5%), vinylformic acid (3%), emulsifying agent (allyloxy polyoxyethylene nonylphenol ether sodium sulfonate) (2%), initiator (ammonium persulphate) (0.5%), all the other waters are emulsified into pre-emulsified monomer emulsion through emulsifying device.Pre-again emulsified monomer emulsion droplets adds to be had in the reactor of part deionized water, and the dropping time is 2 hours, and temperature is controlled to be 85 ℃.Reaction times is 6.5 hours.Make solid content and be 35% ACRYLIC EMULSION.
2) aqueous epoxy resins prepares by following component and weight proportion: Resins, epoxy (E-12) (20%), solvent (a condensed ethandiol monobutyl ether acetate) (20%), strong phosphoric acid (4.5%), catalyzer (triphenylphosphine) (0.4%) are added in the flask, be heated to 170 ℃, be incubated 8.5 hours, cooling back adds the deionized water high speed dispersion, makes solid content and be 24.5% aqueous epoxy resins.
3) ACRYLIC EMULSION that step 1) is made, step 2) aqueous epoxy resins that makes and all the other components join by proportioning carries out dispersed with stirring in the high speed dispersor, treating all to be uniformly dispersed material, can to prepare solid content after the unanimity be 28% highly corrosion resistant water-based anticorrosive paint.
The coating process of highly corrosion resistant water-based anticorrosive paint is:
Adopt roller coating technology to be coated on the tow sides of aluminium foil the highly corrosion resistant water-based anticorrosive paint for preparing, condition of cure is during coating: solidification value is that 230 ℃, set time are 25 seconds.
Embodiment 4:
The component and the weight proportion of highly corrosion resistant water-based anticorrosive paint are: ACRYLIC EMULSION 40%, aminoresin (R717) 9%, flow agent (BYK310, BYK306, the mixture of BYK341) 0.8%, defoamer (BYK035, BYK040, the mixture of BYK073) 0.1%, frostproofer (propylene glycol) 0.6%, film coalescence aid (butyl glycol ether, the mixture of propylene glycol butyl ether) 12%, aqueous epoxy resins (epoxy resin E-44, the epoxy phosphate ester aqueous dispersion of E-20 and phosphating reaction preparation) 3%, deionized water 34.5%.
The preparation method of above-mentioned coating may further comprise the steps:
1) ACRYLIC EMULSION prepares by following component and weight proportion: with vinylbenzene (10%), methyl methacrylate (4%), butyl acrylate (8%), ethyl propenoate (4.6%), functional monomer (glycidyl methacrylate) (4%), vinylformic acid (2%), emulsifying agent (mixture of allyloxy polyoxyethylene nonylphenol ether, polyoxyethylene nonylphenol ether ammonium sulfate) (3%), initiator (Potassium Persulphate) (0.4%), all the other waters are emulsified into pre-emulsified monomer emulsion through emulsifying device.Pre-again emulsified monomer emulsion droplets adds to be had in the reactor of part deionized water, and the dropping time is 4 hours, and temperature is controlled to be 75 ℃.Reaction times is 8 hours.Make solid content and be 36% ACRYLIC EMULSION.
2) aqueous epoxy resins prepares by following component and weight proportion: Resins, epoxy (mixture of E-44, E-20) (22%), solvent (mixture of butyl glycol ether, propylene glycol butyl ether) (22%), strong phosphoric acid (7%), catalyzer (tributyl brometo de amonio) (0.5%) are added in the flask, be heated to 180 ℃, be incubated 8 hours, cooling back adds the deionized water high speed dispersion, makes solid content and be 29% aqueous epoxy resins.
3) ACRYLIC EMULSION that step 1) is made, step 2) aqueous epoxy resins that makes and all the other components join by proportioning carries out dispersed with stirring in the high speed dispersor, treating all to be uniformly dispersed material, can to prepare solid content after the unanimity be 24.3% highly corrosion resistant water-based anticorrosive paint.
The coating process of highly corrosion resistant water-based anticorrosive paint is:
Adopt roller coating technology to be coated on the tow sides of aluminium foil the highly corrosion resistant water-based anticorrosive paint for preparing, condition of cure is during coating: solidification value is that 240 ℃, set time are 24 seconds.
Embodiment 5
The component and the weight proportion of highly corrosion resistant water-based anticorrosive paint are: ACRYLIC EMULSION 53%, aminoresin (R747) 7%, flow agent (BYK306, the mixture of BYK341) 0.6%, defoamer (BYK040, the mixture of BYK073) 1.0%, frostproofer (ethylene glycol) 0.1%, film coalescence aid (propylene glycol butyl ether, mixture in the one condensed ethandiol monobutyl ether acetate) 8%, aqueous epoxy resins (Resins, epoxy E-20, the epoxy phosphate ester aqueous dispersion of E-12 and phosphating reaction preparation) 1.5%, deionized water 28.8%.
The preparation method of above-mentioned coating may further comprise the steps:
1) ACRYLIC EMULSION prepares by following component and weight proportion: with vinylbenzene (6%), methyl methacrylate (6.5%), butyl acrylate (4%), ethyl propenoate (7.5%), functional monomer (mixture of hydroxyethyl methylacrylate, Rocryl 410) (7%), vinylformic acid (4%), emulsifying agent (mixture of polyoxyethylene nonylphenol ether ammonium sulfate, allyloxy polyoxyethylene nonylphenol ether sodium sulfonate) (4%), initiator (ammonium persulphate) (1%), all the other waters are emulsified into pre-emulsified monomer emulsion through emulsifying device.Pre-again emulsified monomer emulsion droplets adds to be had in the reactor of part deionized water, and the dropping time is 5 hours, and temperature is controlled to be 78 ℃.Reaction times is 7 hours.Make solid content and be 40% ACRYLIC EMULSION.
2) aqueous epoxy resins prepares by following component and weight proportion: Resins, epoxy (mixture of E-20, E-12) (24%), solvent (mixture of propylene glycol butyl ether, a condensed ethandiol monobutyl ether acetate) (24%), strong phosphoric acid (7.5%), catalyzer (triphenylphosphine) (0.6%) are added in the flask, be heated to 190 ℃, be incubated 7.5 hours, cooling back adds the deionized water high speed dispersion, makes solid content and be 31.5% aqueous epoxy resins.
3) ACRYLIC EMULSION that step 1) is made, step 2) aqueous epoxy resins that makes and all the other components join by proportioning carries out dispersed with stirring in the high speed dispersor, treating all to be uniformly dispersed material, can to prepare solid content after the unanimity be 28.7% highly corrosion resistant water-based anticorrosive paint.
The coating process of highly corrosion resistant water-based anticorrosive paint is:
Adopt roller coating technology to be coated on the tow sides of aluminium foil the highly corrosion resistant water-based anticorrosive paint for preparing, condition of cure is during coating: solidification value is that 250 ℃, set time are 20 seconds.
Embodiment 6
The component and the weight proportion of highly corrosion resistant water-based anticorrosive paint are: ACRYLIC EMULSION 55%, aminoresin (R717, the mixture of R747) 5%, flow agent (BYK310, the mixture of BYK341) 0.1%, defoamer (BYK035, the mixture of BYK073) 0.9%, frostproofer (propylene glycol) 1.0%, film coalescence aid (butyl glycol ether, the mixture of one condensed ethandiol monobutyl ether acetate) 14%, aqueous epoxy resins (epoxy resin E-44, the epoxy phosphate ester aqueous dispersion of E-12 and phosphating reaction preparation) 1%, deionized water 23%.
The preparation method of above-mentioned coating may further comprise the steps:
1) ACRYLIC EMULSION prepares by following component and weight proportion: with vinylbenzene (5.5%), methyl methacrylate (9%), butyl acrylate (4.5%), ethyl propenoate (6%), functional monomer (mixture of Rocryl 410, Hydroxyethyl acrylate) (8%), vinylformic acid (2.2%), emulsifying agent (mixture of allyloxy polyoxyethylene nonylphenol ether, allyloxy polyoxyethylene nonylphenol ether sodium sulfonate) (2.5%), initiator (Potassium Persulphate) (0.3%), all the other waters are emulsified into pre-emulsified monomer emulsion through emulsifying device.Pre-again emulsified monomer emulsion droplets adds to be had in the reactor of part deionized water, and the dropping time is 4.5 hours, and temperature is controlled to be 90 ℃.Reaction times is 6 hours.Make solid content and be 38% ACRYLIC EMULSION.
2) aqueous epoxy resins prepares by following component and weight proportion: Resins, epoxy (mixture of E-44, E-12) (25%), solvent (mixture of butyl glycol ether, a condensed ethandiol monobutyl ether acetate) (25%), strong phosphoric acid (8%), catalyzer (tributyl brometo de amonio) (0.8%) are added in the flask, be heated to 200 ℃, be incubated 7 hours, cooling back adds the deionized water high speed dispersion, makes solid content and be 33% aqueous epoxy resins.
3) ACRYLIC EMULSION that step 1) is made, step 2) aqueous epoxy resins that makes and all the other components join by proportioning carries out dispersed with stirring in the high speed dispersor, treating all to be uniformly dispersed material, can to prepare solid content after the unanimity be 26.2% highly corrosion resistant water-based anticorrosive paint.
The coating process of highly corrosion resistant water-based anticorrosive paint is:
Adopt roller coating technology to be coated on the tow sides of aluminium foil the highly corrosion resistant water-based anticorrosive paint for preparing, condition of cure is during coating: solidification value is that 235 ℃, set time are 22 seconds.
The foregoing description does not limit the present invention in any way, and every employing is equal to replaces or technical scheme that the mode of equivalent transformation obtains all drops in protection scope of the present invention.
Claims (3)
1. hydrophilic coated aluminum foil highly corrosion resistant water-based anticorrosive paint, the component and the weight proportion that it is characterized in that this coating are: ACRYLIC EMULSION 35-55%, aminoresin 5-15%, flow agent 0.1-1.0%, defoamer 0.1-1.0%, frostproofer 0.1-1.0%, film coalescence aid 5-14%, aqueous epoxy resins 1-4%, deionized water 20-40%, wherein:
Described aminoresin is one or more the mixture among R717, the R747;
Described flow agent is one or more the mixture of BYK310, BYK306, BYK341;
Described defoamer is any one or a few the mixture among BYK035, BYK040, the BYK073;
Described frostproofer is ethylene glycol or propylene glycol;
Described film coalescence aid is any one or a few the mixture in butyl glycol ether, propylene glycol butyl ether, the condensed ethandiol monobutyl ether acetate.
2. a hydrophilic coated aluminum foil is characterized in that may further comprise the steps with the preparation method of highly corrosion resistant water-based anticorrosive paint:
1) ACRYLIC EMULSION prepares by following component and weight proportion: vinylbenzene 4-12%, methyl methacrylate 3-12%, butyl acrylate 3-10%, ethyl propenoate 3-10%, functional monomer 3-10%, vinylformic acid 1-5%, emulsifying agent 1-4%, initiator 0.1-1%, all the other are water, and above-mentioned substance is emulsified into pre-emulsified monomer emulsion through emulsifying device; Pre-emulsified monomer emulsion droplets being added has in the reactor of part deionized water again, and the dropping time is 2-5 hour, and temperature is controlled to be 75-90 ℃; Reaction times is 6-8 hour, makes the ACRYLIC EMULSION that solid content is 30-40%, wherein:
Described functional monomer is one or more the mixture in hydroxyethyl methylacrylate, Rocryl 410, Hydroxyethyl acrylate, the glycidyl methacrylate;
Described emulsifying agent is the allyloxy polyoxyethylene nonylphenol ether, the mixture of one or more in polyoxyethylene nonylphenol ether ammonium sulfate, the allyloxy polyoxyethylene nonylphenol ether sodium sulfonate;
Described initiator is a kind of in ammonium persulphate, the Potassium Persulphate;
2) aqueous epoxy resins prepares by following component and weight proportion: Resins, epoxy 15-25%, solvent 15-25%, strong phosphoric acid 4-12%, catalyzer 0.1-1%, above-mentioned substance is added in the flask, be heated to 150-200 ℃, be incubated 7-10 hour, the cooling back adds the deionized water high speed dispersion, make the aqueous epoxy resins that solid content is 24-35%, wherein:
Described Resins, epoxy is one or more the mixture among E-44, E-20, the E-12;
Described solvent is any one or a few the mixture in butyl glycol ether, propylene glycol butyl ether, the condensed ethandiol monobutyl ether acetate;
Described catalyzer is a kind of in triphenylphosphine or the tributyl brometo de amonio;
3) ACRYLIC EMULSION that step 1) is made, step 2) aqueous epoxy resins that makes and all the other components join by proportioning carries out dispersed with stirring in the high speed dispersor, treat that material all is uniformly dispersed can prepare the highly corrosion resistant water-based anticorrosive paint that solid content is 20-30% after the unanimity.
3. a hydrophilic coated aluminum foil is with the using method of highly corrosion resistant water-based anticorrosive paint, it is characterized in that may further comprise the steps: on coating apparatus, adopt roller coating technology to be coated on the tow sides of aluminium foil the highly corrosion resistant water-based anticorrosive paint for preparing, condition of cure is during coating: solidification value is that 200～250 ℃, set time are 15～40 seconds.
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2010
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