CN105176312A - Graphene-doped waterborne epoxy zinc-containing anti-corrosion primer and preparation method thereof - Google Patents
Graphene-doped waterborne epoxy zinc-containing anti-corrosion primer and preparation method thereof Download PDFInfo
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Abstract
The invention discloses graphene-doped waterborne epoxy zinc-containing anti-corrosion primer and a preparation method thereof. The primer is prepared from a component A and a component B; the component A is prepared from epoxy curing agents, titanium dioxide, waterborne aluminum paste, zinc powder, graphene, nano barium sulfate, zinc phosphate, iron titanium powder, dispersing agents, defoaming agents, foam inhibitors, cosolvent, wetting agents, neutralizers, hydrated magnesium silicate, organic bentonite, flush and corrosion preventing agents, chlorinated polypropylene and deionized water; waterborne epoxy resin emulsion is adopted as the B component. According to the preparation method of the primer, the component A and the component B are firstly prepared separately and then mixed in the using process. The graphene-doped waterborne epoxy zinc-containing anti-corrosion primer has the good drying performance, adhesive force, salt spray resistance and chemical resistance and can be applied to corrosion prevention of steel structures of oil pipelines, oil storage tanks, oil equipment, oil machinery, oil factories and the like.
Description
Technical field
The invention belongs to technical field of coatings, be specifically related to a kind of water-base epoxy of doped graphene containing zinc anti-corrosion primer and preparation method thereof.
Background technology
Domestic existing composite anti-corrosive coating system is divided into priming paint, intermediate coat, finish paint or priming paint and finish paint.Wherein the Main Function of priming paint is laid a solid foundation on ground, has good adhesion to ground, and protection ground, has anticorrosion, rustless property.
In China railways lorry painting design, anticorrosion for rail vehicles, mainly at present adopts solvent-borne type anti-corrosion primer, containing a large amount of organic volatiles in solvent-borne type anti-corrosion primer, can pollute air, not meet the requirement of current environment protection.Meanwhile, a large amount of organic volatiles also causes sizable harm to production and the healthy of workmen.The Water-borne modification of coating reduces the effective ways of VOC quantity discharged at present, is also the trend of future development.
Aqueous priming paint is using water as solvent, nontoxic, solvent-free smell, than the more environmental protection of solvent borne priming paint, be prepared from by water-base resin, water, pigment and auxiliary agent, the key wherein studied is water-base resin, and through the development of decades, water-base resin system main at present has water alcohol acid, water soluble acrylic acid, water-base epoxy, waterborne polyurethane resin, aqueous inorganic silicate, water-based fluororesin and their modified resin.
Meanwhile, along with the development of China railways, the design of rail vehicle progressively will carry out the design concept of " once remaking ", and namely the car body overhaul time limit extended to 16 years from 8 years, and this just proposes requirements at the higher level to the anticorrosion of vehicle paintwork.For the size of priming paint antiseptic power, the length at present mainly through the salt-fog resistant time of coating judges.In existing painting design, anticorrosion for lorry body, the main employing thick slurry priming paint of cologne earth alkyd and epoxy micaceous iron oxide rustproof paint, the salt fog resistance of the two is only 500h.Be difficult to meet higher requirement for anticorrosion.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art and provide a kind of water-base epoxy of doped graphene containing zinc anti-corrosion primer and preparation method thereof, gained priming paint has good drying property, sticking power, salt spray resistance and chemical resistance.
A kind of water-base epoxy of doped graphene is containing zinc anti-corrosion primer, be made up of by weight 15 ~ 35:1 component A and B component, component A includes the following component with parts by weight: epoxy hardener 15 ~ 20 parts, titanium dioxide 8 ~ 10 parts, water aluminum-silver slurry 1 ~ 2 part, zinc powder 25 ~ 40 parts, Graphene 2 ~ 5 parts, nano barium sulfate 5 ~ 10 parts, zinc phosphate 5 ~ 10 parts, 5 ~ 10 parts, ferrotitanium powder, dispersion agent 0.3 ~ 0.5 part, defoamer 0.1 ~ 0.2 part, suds suppressor 0.1 ~ 0.2 part, solubility promoter 8.5 ~ 10 parts, wetting agent 0.1 ~ 0.3 part, neutralizing agent 0.5 ~ 0.8 part, hydrated magnesium silicate 0.3 ~ 0.5 part, organobentonite 0.3 ~ 0.5 part, the agent 0.5 ~ 1 part of anti-sudden strain of a muscle rust, Chlorinated Polypropylene III 5 ~ 8 parts, deionized water 100 ~ 200 parts, B component is aqueous epoxy resin emulsion.
As the further improvement of foregoing invention, described solubility promoter is ethylene glycol monobutyl ether.
As the further improvement of foregoing invention, in component A, also comprise polyamide wax 0.5 ~ 1 part.
As the further improvement of foregoing invention, in component A, also comprise hydroxy silicon oil 1 ~ 6 part.
The water-base epoxy of above-mentioned doped graphene contains the preparation method of zinc antifouling paste, and component A is obtained by following steps: step 1, adds in deionized water by hydrated magnesium silicate, organobentonite, stirs, and leaves standstill, obtains mixture; Step 2, by epoxy hardener, neutralizing agent, solubility promoter, dispersion agent, suds suppressor, defoamer, anti-sudden strain of a muscle rust agent mixing, 400 ~ 600rpm stirs 5 ~ 10min; Step 3, under the condition that 400 ~ 600rpm stirs, add titanium dioxide, zinc phosphate and step 1 gained mixture, 600 ~ 800rpm stirs 15 ~ 20min, and being ground to fineness is 50 μm; Step 4, under the condition that 400 ~ 600rpm stirs, add nano barium sulfate, Graphene and ferrotitanium powder, 600 ~ 800rpm stirs 15 ~ 20min; Step 5, adds the mixture of water aluminum-silver slurry and solubility promoter, wetting agent, and 600 ~ 800rpm stirs 5 ~ 10min; Step 6, adds propylene dichloride under 400 ~ 600rpm agitation condition, and 600 ~ 800rpm stirs 5 ~ 10min; Step 7, adds zinc powder, and 400 ~ 600rpm stirs 10 ~ 15min, to obtain final product; Component A is mixed with B component, to obtain final product.
As the further improvement of foregoing invention, in the preparation process 2 of component A, also need to add polyamide wax.
As the further improvement of foregoing invention, in the preparation process 5 of component A, also need to add hydroxy silicon oil.
The water-base epoxy of doped graphene of the present invention has good drying property, sticking power, salt spray resistance and chemical resistance containing zinc anti-corrosion primer, can be applicable to the anticorrosion of the steel construction such as petroleum pipe line, petroleum storage tank, oil equipment, petroleum machinery, petrochemical plants.
Embodiment
The raw material that following examples adopt is:
Aqueous epoxy resin emulsion (6520, the U.S. steps figure)
Titanium dioxide (257, climb steel titanium white)
Water aluminum-silver slurry (XH330, Shenzhen Xin Hangwang)
Zinc phosphate (PZ04, ring fine jade chemistry)
Nano barium sulfate (BS80, Beijing gold zebra)
Graphene (graphene oxide, the permanent ball in Suzhou)
Zinc powder (600 height of eye purity zinc powders, Yangzhou is two contains)
Ferrotitanium powder (X-500, Jiangsu Wanda)
Dispersion agent (755W, enlightening is high)
Defoamer (2550, BASF)
Suds suppressor (BL-100, this shield of Suzhou hundred)
Wetting agent (67, this chemistry of sea inscription)
Hydrated magnesium silicate (AD, sea ease chemistry)
Organobentonite (LT, Hai Mingsi)
Solubility promoter (ethylene glycol monobutyl ether, China Petrochemical Industry)
Epoxy hardener (8538, the U.S. steps figure)
Chlorinated Polypropylene III (824, the rich chemical industry in west, Shanghai)
Neutralizing agent (DMAE, this chemistry of sea inscription)
Anti-sudden strain of a muscle rust agent (ZT-709, extra large river chemical industry)
Embodiment 1
A kind of water-base epoxy of doped graphene is containing zinc anti-corrosion primer, be made up of by weight 25:1 component A and B component, component A includes the following component with parts by weight: epoxy hardener 15 parts, titanium dioxide 8 parts, water aluminum-silver slurry 2 parts, zinc powder 40 parts, Graphene 2 parts, nano barium sulfate 10 parts, zinc phosphate 7 parts, 5 parts, ferrotitanium powder, dispersion agent 0.5 part, defoamer 0.2 part, suds suppressor 0.1 part, solubility promoter 8.5 parts, wetting agent 0.1 part, neutralizing agent 0.5 part, hydrated magnesium silicate 0.3 part, organobentonite 0.5 part, the agent 0.5 part of anti-sudden strain of a muscle rust, Chlorinated Polypropylene III 5 parts, deionized water 100 parts, B component is aqueous epoxy resin emulsion.
Described solubility promoter is ethylene glycol monobutyl ether.
The water-base epoxy of above-mentioned doped graphene contains the preparation method of zinc antifouling paste, and component A is obtained by following steps: step 1, adds in deionized water by hydrated magnesium silicate, organobentonite, stirs, and leaves standstill, obtains mixture; Step 2, by epoxy hardener, neutralizing agent, solubility promoter, dispersion agent, suds suppressor, defoamer, anti-sudden strain of a muscle rust agent mixing, 600rpm stirs 5min; Step 3, under the condition that 400rpm stirs, add titanium dioxide, zinc phosphate and step 1 gained mixture, 600rpm stirs 20min, and being ground to fineness is 50 μm; Step 4, under the condition that 600rpm stirs, add nano barium sulfate, Graphene and ferrotitanium powder, 600rpm stirs 20min; Step 5, adds the mixture of water aluminum-silver slurry and solubility promoter, wetting agent, and 600rpm stirs 10min; Step 6, adds propylene dichloride under 400rpm agitation condition, and 800rpm stirs 5min; Step 7, adds zinc powder, and 400rpm stirs 15min, to obtain final product; Component A is mixed with B component, to obtain final product.
Embodiment 2
A kind of water-base epoxy of doped graphene is containing zinc anti-corrosion primer, be made up of by weight 15:1 component A and B component, component A includes the following component with parts by weight: epoxy hardener 18 parts, titanium dioxide 8 parts, water aluminum-silver slurry 2 parts, zinc powder 25 parts, Graphene 3.5 parts, nano barium sulfate 8 parts, zinc phosphate 10 parts, 5 parts, ferrotitanium powder, dispersion agent 0.3 part, defoamer 0.1 part, suds suppressor 0.2 part, solubility promoter 9 parts, wetting agent 0.3 part, neutralizing agent 0.6 part, hydrated magnesium silicate 0.4 part, organobentonite 0.4 part, the agent 0.8 part of anti-sudden strain of a muscle rust, Chlorinated Polypropylene III 7 parts, deionized water 165 parts, B component is aqueous epoxy resin emulsion.
Described solubility promoter is ethylene glycol monobutyl ether.
The water-base epoxy of above-mentioned doped graphene contains the preparation method of zinc antifouling paste, and component A is obtained by following steps: step 1, adds in deionized water by hydrated magnesium silicate, organobentonite, stirs, and leaves standstill, obtains mixture; Step 2, by epoxy hardener, neutralizing agent, solubility promoter, dispersion agent, suds suppressor, defoamer, anti-sudden strain of a muscle rust agent mixing, 500rpm stirs 8min; Step 3, under the condition that 600rpm stirs, add titanium dioxide, zinc phosphate and step 1 gained mixture, 700rpm stirs 18min, and being ground to fineness is 50 μm; Step 4, under the condition that 500rpm stirs, add nano barium sulfate, Graphene and ferrotitanium powder, 700rpm stirs 17min; Step 5, adds the mixture of water aluminum-silver slurry and solubility promoter, wetting agent, and 600rpm stirs 10min; Step 6, adds propylene dichloride under 500rpm agitation condition, and 700rpm stirs 7min; Step 7, adds zinc powder, and 400rpm stirs 15min, to obtain final product; Component A is mixed with B component, to obtain final product.
Embodiment 3
A kind of water-base epoxy of doped graphene is containing zinc anti-corrosion primer, be made up of by weight 35:1 component A and B component, component A includes the following component with parts by weight: epoxy hardener 20 parts, titanium dioxide 10 parts, water aluminum-silver slurry 1 part, zinc powder 32 parts, Graphene 5 parts, nano barium sulfate 5 parts, zinc phosphate 5 parts, 10 parts, ferrotitanium powder, dispersion agent 0.3 part, defoamer 0.2 part, suds suppressor 0.2 part, solubility promoter 9 parts, wetting agent 0.2 part, neutralizing agent 0.8 part, hydrated magnesium silicate 0.3 part, organobentonite 0.5 part, the agent 0.8 part of anti-sudden strain of a muscle rust, Chlorinated Polypropylene III 8 parts, deionized water 180 parts, B component is aqueous epoxy resin emulsion.
Described solubility promoter is ethylene glycol monobutyl ether.
The water-base epoxy of above-mentioned doped graphene contains the preparation method of zinc antifouling paste, and component A is obtained by following steps: step 1, adds in deionized water by hydrated magnesium silicate, organobentonite, stirs, and leaves standstill, obtains mixture; Step 2, by epoxy hardener, neutralizing agent, solubility promoter, dispersion agent, suds suppressor, defoamer, anti-sudden strain of a muscle rust agent mixing, 500rpm stirs 9min; Step 3, under the condition that 400rpm stirs, add titanium dioxide, zinc phosphate and step 1 gained mixture, 800rpm stirs 15min, and being ground to fineness is 50 μm; Step 4, under the condition that 400rpm stirs, add nano barium sulfate, Graphene and ferrotitanium powder, 600rpm stirs 20min; Step 5, adds the mixture of water aluminum-silver slurry and solubility promoter, wetting agent, and 800rpm stirs 5min; Step 6, adds propylene dichloride under 600rpm agitation condition, and 600rpm stirs 10min; Step 7, adds zinc powder, and 400rpm stirs 15min, to obtain final product; Component A is mixed with B component, to obtain final product.
Embodiment 4
A kind of water-base epoxy of doped graphene is containing zinc anti-corrosion primer, be made up of by weight 20:1 component A and B component, component A includes the following component with parts by weight: epoxy hardener 15 parts, titanium dioxide 8 parts, water aluminum-silver slurry 2 parts, zinc powder 30 parts, Graphene 5 parts, nano barium sulfate 5 parts, zinc phosphate 7 parts, 10 parts, ferrotitanium powder, dispersion agent 0.4 part, defoamer 0.2 part, suds suppressor 0.1 part, solubility promoter 8.5 parts, wetting agent 0.1 part, neutralizing agent 0.5 part, hydrated magnesium silicate 0.3 part, organobentonite 0.5 part, the agent 1 part of anti-sudden strain of a muscle rust, Chlorinated Polypropylene III 5 parts, deionized water 125 parts, B component is aqueous epoxy resin emulsion.
Described solubility promoter is ethylene glycol monobutyl ether.
The water-base epoxy of above-mentioned doped graphene contains the preparation method of zinc antifouling paste, and component A is obtained by following steps: step 1, adds in deionized water by hydrated magnesium silicate, organobentonite, stirs, and leaves standstill, obtains mixture; Step 2, by epoxy hardener, neutralizing agent, solubility promoter, dispersion agent, suds suppressor, defoamer, anti-sudden strain of a muscle rust agent mixing, 400rpm stirs 5min; Step 3, under the condition that 600rpm stirs, add titanium dioxide, zinc phosphate and step 1 gained mixture, 600rpm stirs 15min, and being ground to fineness is 50 μm; Step 4, under the condition that 600rpm stirs, add nano barium sulfate, Graphene and ferrotitanium powder, 800rpm stirs 20min; Step 5, adds the mixture of water aluminum-silver slurry and solubility promoter, wetting agent, and 800rpm stirs 5min; Step 6, adds propylene dichloride under 400rpm agitation condition, and 600rpm stirs 10min; Step 7, adds zinc powder, and 400rpm stirs 10min, to obtain final product; Component A is mixed with B component, to obtain final product.
Embodiment 5
A kind of water-base epoxy of doped graphene is containing zinc anti-corrosion primer, be made up of by weight 35:1 component A and B component, component A includes the following component with parts by weight: epoxy hardener 20 parts, titanium dioxide 8 parts, water aluminum-silver slurry 1 part, zinc powder 30 parts, Graphene 5 parts, nano barium sulfate 5 parts, zinc phosphate 5 parts, 5 parts, ferrotitanium powder, dispersion agent 0.5 part, defoamer 0.1 part, suds suppressor 0.2 part, solubility promoter 9.5 parts, wetting agent 0.3 part, neutralizing agent 0.8 part, hydrated magnesium silicate 0.5 part, organobentonite 0.3 part, the agent 0.6 part of anti-sudden strain of a muscle rust, Chlorinated Polypropylene III 8 parts, deionized water 200 parts, B component is aqueous epoxy resin emulsion.
Described solubility promoter is ethylene glycol monobutyl ether.
The water-base epoxy of above-mentioned doped graphene contains the preparation method of zinc antifouling paste, and component A is obtained by following steps: step 1, adds in deionized water by hydrated magnesium silicate, organobentonite, stirs, and leaves standstill, obtains mixture; Step 2, by epoxy hardener, neutralizing agent, solubility promoter, dispersion agent, suds suppressor, defoamer, anti-sudden strain of a muscle rust agent mixing, 600rpm stirs 10min; Step 3, under the condition that 400rpm stirs, add titanium dioxide, zinc phosphate and step 1 gained mixture, 800rpm stirs 20min, and being ground to fineness is 50 μm; Step 4, under the condition that 600rpm stirs, add nano barium sulfate, Graphene and ferrotitanium powder, 600rpm stirs 15min; Step 5, adds the mixture of water aluminum-silver slurry and solubility promoter, wetting agent, and 800rpm stirs 10min; Step 6, adds propylene dichloride under 400rpm agitation condition, and 800rpm stirs 5min; Step 7, adds zinc powder, and 600rpm stirs 10min, to obtain final product; Component A is mixed with B component, to obtain final product.
Embodiment 6
The difference of the present embodiment and embodiment 3 is: also comprise polyamide wax 0.5 part in component A.
Embodiment 7
The difference of the present embodiment and embodiment 6 is: also comprise hydroxy silicon oil 6 parts in component A.
Performance test
Test method is: by the component A in each embodiment and B component paint, deionized-distilled water is adopted to carry out being diluted to spray viscosity (40-50S, T-4 cup), standard-bred mouth iron plate carries out phosphatization or grinding process, on tinplate sheet, gauge control is at 20-30 μm, after 48 hours do solid work completely, do all-round property testing, type inspection dry plate gauge control, at 80-100 μm, is done pattern and is detected after 7 days do solid work completely.Time of drying, sticking power was according to GB/T1720, and impact is according to GB/T1732, and toughness is according to GB/T1731, and viscosity is according to GB/T1723, and resistance to neutral salt spray is according to GB/T1771, and the coating in over-all properties and CN102093805A contrasts according to GB/T1728.Result is as shown in the table.
As can be seen from the table, the priming paint in embodiment 1 ~ 5 has good drying property, sticking power, salt spray resistance and chemical resistance; By adding polyamide wax in component A, drying property and the antiseptic property of coating can be improved; Can be found out by embodiment 7, hydroxy silicon oil can produce with polymeric amide better and act synergistically, and improves antiseptic property.
Claims (7)
1. the water-base epoxy of doped graphene is containing a zinc anti-corrosion primer, it is characterized in that: be made up of by weight 15 ~ 35:1 component A and B component, component A includes the following component with parts by weight: epoxy hardener 15 ~ 20 parts, titanium dioxide 8 ~ 10 parts, water aluminum-silver slurry 1 ~ 2 part, zinc powder 25 ~ 40 parts, Graphene 2 ~ 5 parts, nano barium sulfate 5 ~ 10 parts, zinc phosphate 5 ~ 10 parts, 5 ~ 10 parts, ferrotitanium powder, dispersion agent 0.3 ~ 0.5 part, defoamer 0.1 ~ 0.2 part, suds suppressor 0.1 ~ 0.2 part, solubility promoter 8.5 ~ 10 parts, wetting agent 0.1 ~ 0.3 part, neutralizing agent 0.5 ~ 0.8 part, hydrated magnesium silicate 0.3 ~ 0.5 part, organobentonite 0.3 ~ 0.5 part, the agent 0.5 ~ 1 part of anti-sudden strain of a muscle rust, Chlorinated Polypropylene III 5 ~ 8 parts, deionized water 100 ~ 200 parts, B component is aqueous epoxy resin emulsion.
2. the water-base epoxy of doped graphene according to claim 1 is containing zinc anti-corrosion primer, it is characterized in that: described solubility promoter is ethylene glycol monobutyl ether.
3. the water-base epoxy of doped graphene according to claim 1 is containing zinc anti-corrosion primer, it is characterized in that: also comprise polyamide wax 0.5 ~ 1 part in component A.
4. the water-base epoxy of doped graphene according to claim 3 is containing zinc anti-corrosion primer, it is characterized in that: also comprise hydroxy silicon oil 1 ~ 6 part in component A.
5. the water-base epoxy of the doped graphene described in claim 1 or 2 contains the preparation method of zinc antifouling paste, it is characterized in that: component A is obtained by following steps: step 1, adds in deionized water by hydrated magnesium silicate, organobentonite, stir, leave standstill, obtain mixture; Step 2, by epoxy hardener, neutralizing agent, solubility promoter, dispersion agent, suds suppressor, defoamer, anti-sudden strain of a muscle rust agent mixing, 400 ~ 600rpm stirs 5 ~ 10min; Step 3, under the condition that 400 ~ 600rpm stirs, add titanium dioxide, zinc phosphate and step 1 gained mixture, 600 ~ 800rpm stirs 15 ~ 20min, and being ground to fineness is 50 μm; Step 4, under the condition that 400 ~ 600rpm stirs, add nano barium sulfate, Graphene and ferrotitanium powder, 600 ~ 800rpm stirs 15 ~ 20min; Step 5, adds the mixture of water aluminum-silver slurry and solubility promoter, wetting agent, and 600 ~ 800rpm stirs 5 ~ 10min; Step 6, adds propylene dichloride under 400 ~ 600rpm agitation condition, and 600 ~ 800rpm stirs 5 ~ 10min; Step 7, adds zinc powder, and 400 ~ 600rpm stirs 10 ~ 15min, to obtain final product; Component A is mixed with B component, to obtain final product.
6. the water-base epoxy of doped graphene according to claim 5 is containing the preparation method of zinc antifouling paste, it is characterized in that: in the preparation process 2 of component A, also needs to add polyamide wax.
7. the water-base epoxy of doped graphene according to claim 6 is containing the preparation method of zinc antifouling paste, it is characterized in that: in the preparation process 5 of component A, also needs to add hydroxy silicon oil.
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Denomination of invention: A water-borne zinc containing epoxy anti-corrosion primer doped with graphene and its preparation method Effective date of registration: 20221122 Granted publication date: 20170915 Pledgee: Bank of Nanjing Co.,Ltd. Zhenjiang Branch Pledgor: JIANGSU HUAXIA PAINT-MAKING Co.,Ltd. Registration number: Y2022980022794 |