CN106398521A - Aqueous chrome-free dacromet coating material, preparation method and use method thereof - Google Patents
Aqueous chrome-free dacromet coating material, preparation method and use method thereof Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims description 6
- 239000011248 coating agent Substances 0.000 title abstract description 16
- 238000000576 coating method Methods 0.000 title abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000003756 stirring Methods 0.000 claims abstract description 25
- 238000002156 mixing Methods 0.000 claims abstract description 21
- 238000005245 sintering Methods 0.000 claims abstract description 14
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 12
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 claims abstract description 10
- 229940010552 ammonium molybdate Drugs 0.000 claims abstract description 10
- 235000018660 ammonium molybdate Nutrition 0.000 claims abstract description 10
- 239000011609 ammonium molybdate Substances 0.000 claims abstract description 10
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000004327 boric acid Substances 0.000 claims abstract description 10
- 238000005260 corrosion Methods 0.000 claims abstract description 10
- RGPUVZXXZFNFBF-UHFFFAOYSA-K diphosphonooxyalumanyl dihydrogen phosphate Chemical compound [Al+3].OP(O)([O-])=O.OP(O)([O-])=O.OP(O)([O-])=O RGPUVZXXZFNFBF-UHFFFAOYSA-K 0.000 claims abstract description 10
- 239000012286 potassium permanganate Substances 0.000 claims abstract description 10
- 239000002562 thickening agent Substances 0.000 claims abstract description 10
- 229910000349 titanium oxysulfate Inorganic materials 0.000 claims abstract description 10
- 230000007797 corrosion Effects 0.000 claims abstract description 9
- 239000002270 dispersing agent Substances 0.000 claims abstract description 7
- 239000003960 organic solvent Substances 0.000 claims abstract description 7
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 27
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 24
- 239000003973 paint Substances 0.000 claims description 23
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical group OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 21
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 18
- 238000013019 agitation Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 12
- 238000005516 engineering process Methods 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- 239000004411 aluminium Substances 0.000 claims description 11
- 239000013530 defoamer Substances 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 229920002635 polyurethane Polymers 0.000 claims description 9
- 239000004814 polyurethane Substances 0.000 claims description 9
- 230000007062 hydrolysis Effects 0.000 claims description 8
- 238000006460 hydrolysis reaction Methods 0.000 claims description 8
- 239000011247 coating layer Substances 0.000 claims description 6
- 238000003618 dip coating Methods 0.000 claims description 6
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- 238000007789 sealing Methods 0.000 claims description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 235000011187 glycerol Nutrition 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 239000005416 organic matter Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 5
- 239000011651 chromium Substances 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000611 Zinc aluminium Inorganic materials 0.000 description 2
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 description 2
- 229910021389 graphene Inorganic materials 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
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- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical compound OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 description 1
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Phytic acid Natural products OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- FJMNNXLGOUYVHO-UHFFFAOYSA-N aluminum zinc Chemical compound [Al].[Zn] FJMNNXLGOUYVHO-UHFFFAOYSA-N 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 230000036952 cancer formation Effects 0.000 description 1
- 231100000504 carcinogenesis Toxicity 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
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- 239000000203 mixture Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- BULVZWIRKLYCBC-UHFFFAOYSA-N phorate Chemical compound CCOP(=S)(OCC)SCSCC BULVZWIRKLYCBC-UHFFFAOYSA-N 0.000 description 1
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- 239000000467 phytic acid Substances 0.000 description 1
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- 238000012827 research and development Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The present invention discloses an aqueous chrome-free dacromet coating material and a preparation method thereof, and belongs to the technical field of metal anticorrosion. The technical scheme is that four components are separately prepared and are mixed according to a mass ratio of 4:3.5:2.5:1 so as to obtain the aqueous chrome-free dacromet coating material, wherein the component A preparation method comprises: mixing flaky zinc powder and aluminum powder, adding a dispersant, an organic solvent, water and a defoaming agent, stirring, and uniformly dispersing, the component B preparation method comprises: mixing potassium permanganate, titanyl sulfate, aluminium dihydrogen phosphate, boric acid, ammonium molybdate and water, and dissolving, the component C is an organosilicon hydrolyzate, and the component D is a thickener. According to the present invention, the prepared aqueous chrome-free dacromet coating material has characteristics of compact coating, high hardness and good corrosion resistance; the organic matter in the coating is less, such that the volatile matter has little effect on the environment; and the sintering temperature is low, and the energy source is saved.
Description
Technical field
The present invention relates to a kind of aqueous chromium-free Dyclo paint and preparation method thereof, belong to technical field of metal anti-corrosion.
Background technology
Because containing poisonous and carcinogenesis Cr in Dacromet Technology6+.For pollution of chromium problem, various countries have started to take increasingly stricter measure.At present, developed country has all strictly forbidden carrying out Dacroment production and coating processing in native country, by overseas investment, processing factory is transferred to the not strict country of Environmental capacity, then reimportations.In the case, China also takes some restrictions,《Electronics and IT products prevention and cure of pollution management method》Regulation, from 1 day July in 2006, all must not contain in the domestic all electronics and IT products sold of China and include Cr6+Deng in interior poisonous and harmful substance.But because the chromium-free Dyclo technology of China is also in the exploratory stage, most of production line still coats Dacroment containing chromium.
At present, chromium-free Dyclo technology realize industrialization product less, the Delta coating of the Geomet coating of MCI company of the U.S. and German EDLTA company commonly uses in developed country, but because price is more high than Dacroment containing chromium, also cannot large-scale popularization.Foreign technology monopolizes, and forces China's independent development, autonomous innovation, carries out the research and development of domestic chromium-free Dyclo technology.
Patent CN 101338091B reports a kind of chromium-free metal anti-corrosive paint, but more using organic matter, leads to coating not fine and close, composition does not contain passivator, the coating shelf-life is very short.Patent CN
102277022A reports a kind of aqueous chromium-free Dyclo paint and preparation method thereof, and using phytic acid as passivator, passivation effect is limited, and acid too strong, easily reacts fierce with aluminum zinc powder.Patent CN
102504700 A report a kind of aqueous chromium-free zinc-aluminum paint and preparation method thereof, are not directed to passivator, there is a problem of that the shelf-life is short.Patent CN
102911534 A water base chromium-free zinc aluminum masking liquid and preparation method thereof and using method, employ resin as bonding agent, there is resistance to ag(e)ing problem.Patent CN
103740152 A report a kind of modified chromium-free Dyclo paint of Graphene, improve hardness and the anti-corrosive properties of coating by increasing Graphene, but because grapheme material price is very expensive, at present also cannot large-scale use.
Content of the invention
Remain a need for improving to solve the problems, such as existing chromium-free Dyclo paint coating not densification, corrosion resistance in the present invention, the aqueous chromium-free Dyclo paint that a kind of coating is fine and close, decay resistance is good is provided.
The aqueous chromium-free Dyclo paint preparation method that the present invention provides, process is simple, cost is relatively low, is suitable for industrialized production.
The present invention is achieved through the following technical solutions：.
The aqueous chromium-free Dyclo paint of the present invention is grouped into by tetra- kinds of groups of A, B, C, D, each component order in mass ratio 4:3.5:2.5:1 mixing.
Component A by weight 100% calculates, and is mixed by following：Zinc powder 25 ~ 45wt%, aluminium powder 5 ~ 10wt%, organic solvent 15 ~ 25wt%, dispersant 4 ~ 8wt%, water 30 ~ 50wt%, defoamer 0.2 ~ 0.4wt%.
B component by weight 100% calculates, and is mixed by following：Potassium permanganate 0.5 ~ 1.5wt%, titanyl sulfate 0.5 ~ 1.0wt%, aluminium dihydrogen phosphate 15 ~ 20wt%, boric acid 8 ~ 12wt%, ammonium molybdate 0.1 ~ 0.5wt%, cerous nitrate 0.05 ~ 0.1wt%, water 65 ~ 70wt%.
Component C by weight 100% calculates, and is formed by following mixed hydrolysis：γ-glycidyl ether oxygen propyl trimethoxy silicane 40 ~ 50wt%, water 30 ~ 50wt%, methyl alcohol 5 ~ 20wt%, 1mol/L watery hydrochloric acid 2 ~ 5wt%.
D component by weight 100% calculates, and is mixed by following：Non-ionic polyurethane association thickener 80 ~ 90% and white carbon 10 ~ 20%.
A kind of aqueous chromium-free Dyclo paint according to the present invention, its further technical scheme is using flake zinc powder, aluminium powder, 0.15-0.30 μm of thickness, 10-20 μm of diameter；Organic solvent adopts one or more mixing of ethylene glycol, n-butanol, glycerine, diethylene glycol；Dispersant adopts one kind or the mixing of OP-10, TX-100 or NP-5；Defoamer adopts liquid non-silicon defoaming agent.
A kind of aqueous chromium-free Dyclo paint of the present invention, its further preparation method：.
Weigh zinc powder, aluminium powder in proportion, add organic solvent, dispersant, water, defoamer, mechanical agitation, dispersed, make component A, stand-by.
Weigh potassium permanganate, titanyl sulfate, aluminium dihydrogen phosphate, boric acid, ammonium molybdate, cerous nitrate, water, ultrasonic dissolution in proportion, make B component, stand-by.
Weigh γ-glycidyl ether oxygen propyl trimethoxy silicane, water, methanol solution in proportion, under 50 DEG C of water bath condition, magnetic agitation to water white transparency, then drips the watery hydrochloric acid of 1mol/L, component C is made in sealing hydrolysis 8 ~ 12 hours, stand-by；
Weigh non-ionic polyurethane association thickener and white carbon in proportion, stir, stand-by.
Four components in mass ratio 4:3.5:2.5:1 mixing, concrete preparation method：Under the conditions of 300 ~ 500rmp is continuously stirred, B component is added drop-wise in component A component A with 1 ~ 3 drop/sec of speed, after dripping, continues stirring 30 ~ 60min；Again C component is added in A, B mixed liquor, continue stirring 30 ~ 60min；Again D component is added in A, B, C mixed liquor, continue stirring 1 ~ 2h, that is, obtain aqueous chromium-free Dyclo paint.
A kind of aqueous chromium-free Dyclo paint according to the present invention, its further using method：It is being intended on corrosion-resistant base material coat using dip coating manner, using applying-drying-burning circulation technology, until coated weight reaches 200 ~ 300mg/dm2, 8 ~ 20 μm of coating layer thickness, 80 ~ 90 DEG C of drying temperature, drying time 15 ~ 20min, 180 ~ 200 DEG C of sintering curing temperature, sintering curing time 20 ~ 60min.
Advantages of the present invention：1st, coating is fine and close, hardness is high, corrosion resisting property is good；2nd, in coating, organic matter is few, and the impact to environment for the volatile matter is little；3rd, sintering temperature is low, the effectively save energy.
Brief description
Fig. 1 aqueous chromium-free Dacroment sample.
Fig. 2 aqueous chromium-free Dacroment sample microstructure.
Fig. 3 embodiment 1 ~ 4 sample tests.
Specific embodiment
Embodiment 1.
Weigh zinc powder 21g, aluminium powder 4g, ethylene glycol 17g, op-10 4.5g, water 24g, defoamer 0.2g, mechanical agitation, dispersed, make component A, stand-by；Weigh potassium permanganate 0.4g, titanyl sulfate 0.3g, aluminium dihydrogen phosphate 10g, boric acid 6.5g, ammonium molybdate 0.2g, cerous nitrate 0.05g, water 40g, ultrasonic dissolution, make B component, stand-by；Weigh γ-glycidyl ether oxygen propyl trimethoxy silicane 19g, water 19g, methyl alcohol 3.5g, under 50 DEG C of water bath condition, magnetic agitation to water white transparency, then drip the watery hydrochloric acid 1.0g of 1mol/L, and sealing hydrolysis 10 hours, make component C, stand-by；Weigh non-ionic polyurethane association thickener 15.0g and white carbon 3.0g, stir, stand-by.
Four components in mass ratio 4:3.5:2.5:1 mixing, concrete preparation method：Under the conditions of 400rmp is continuously stirred, B component is added drop-wise in component A component A with 1 drop/sec of speed, after dripping, continues stirring 50min；Again C component is added in A, B blending ingredients, continue stirring 30min；Again D component is added in A, B, C blending ingredients, continue stirring 2h, that is, obtain aqueous chromium-free Dyclo paint.
It is being intended on corrosion-resistant base material coat using dip coating manner, circulation technology, 90 DEG C of drying temperature, drying time 20min, 200 DEG C of sintering curing temperature, sintering curing time 30min are being burnt using three-coat three-baking three.
12 μm of coating layer thickness after tested, standard Neutral salt spray test 600h no red rust.
Embodiment 2.
Weigh zinc powder 20.0g；Aluminium powder 5.0g；Ethylene glycol 15.0g；op-10 5.0g；Water 25.0g；Defoamer 0.25g, mechanical agitation, dispersed, make component A, stand-by；Weigh potassium permanganate 0.5g, titanyl sulfate 0.3g, aluminium dihydrogen phosphate 10.5g, boric acid 6.5g, ammonium molybdate 0.2g, cerous nitrate 0.05g, water 40g, ultrasonic dissolution, make B component, stand-by；Weigh γ-glycidyl ether oxygen propyl trimethoxy silicane 20g, water 20g, methyl alcohol 4.5g, under 50 DEG C of water bath condition, magnetic agitation to water white transparency, then drip the watery hydrochloric acid 1.5g of 1mol/L, and sealing hydrolysis 8 hours, make component C, stand-by；Weigh non-ionic polyurethane association thickener 15.0g and white carbon 2.5g, stir, stand-by.
Four components in mass ratio 4:3.5:2.5:1 mixing, concrete preparation method：Under the conditions of 500rmp is continuously stirred, B component is added drop-wise in component A component A with 3 drops/sec of speed, after dripping, continues stirring 60min；Again C component is added in A, B blending ingredients, continue stirring 30min；Again D component is added in A, B, C blending ingredients, continue stirring 2h, that is, obtain aqueous chromium-free Dyclo paint.
It is being intended on corrosion-resistant base material coat using dip coating manner, circulation technology, 90 DEG C of drying temperature, drying time 30min, 200 DEG C of sintering curing temperature, sintering curing time 40min are being burnt using three-coat three-baking three.
11 μm of coating layer thickness after tested, standard Neutral salt spray test 720h no red rust.
Embodiment 3.
Weigh zinc powder 20.0g；Aluminium powder 5.0g；Ethylene glycol 16.0g；op-10 5.5g；Water 23.0g；Defoamer 0.25g, mechanical agitation, dispersed, make component A, stand-by；Weigh potassium permanganate 0.5g, titanyl sulfate 0.35g, aluminium dihydrogen phosphate 11g, boric acid 6.0g, ammonium molybdate 0.25g, cerous nitrate 0.05g, water 40g, ultrasonic dissolution, make B component, stand-by；Weigh γ-glycidyl ether oxygen propyl trimethoxy silicane 22g, water 19g, methyl alcohol 6.0g, under 50 DEG C of water bath condition, magnetic agitation to water white transparency, then drip the watery hydrochloric acid 2.0g of 1mol/L, and sealing hydrolysis 12 hours, make component C, stand-by；Weigh non-ionic polyurethane association thickener 15.0g and white carbon 3.0g, stir, stand-by.
Four components in mass ratio 4:3.5:2.5:1 mixing, concrete preparation method：Under the conditions of 300rmp is continuously stirred, B component is added drop-wise in component A component A with 2 drops/sec of speed, after dripping, continues stirring 60min；Again C component is added in A, B blending ingredients, continue stirring 30min；Again D component is added in A, B, C blending ingredients, continue stirring 1.5h, that is, obtain aqueous chromium-free Dyclo paint.
It is being intended on corrosion-resistant base material coat using dip coating manner, applying two using two and dry two burning circulation technologies, 80 DEG C of drying temperature, drying time 20min, 180 DEG C of sintering curing temperature, sintering curing time 30min.
8.5 μm of coating layer thickness after tested, standard Neutral salt spray test 480h no red rust.
Embodiment 4.
Component A：Zinc powder 22.0g；Aluminium powder 4.0g；Ethylene glycol 17.0g；op-10 5.0g；Water 23.0g；Defoamer 0.25g.
B component：Potassium permanganate 0.6g, titanyl sulfate 0.35g, aluminium dihydrogen phosphate 11g, boric acid 5.5g, ammonium molybdate 0.25g, cerous nitrate 0.05g, water 40g.
Component C：γ-glycidyl ether oxygen propyl trimethoxy silicane 20g, water 19g, methyl alcohol 5.0g, 1mol/L watery hydrochloric acid 2.0g；
D component：Non-ionic polyurethane association thickener 15.0g and white carbon 2.5g.
Weigh zinc powder 22.0g；Aluminium powder 4.0g；Ethylene glycol 17.0g；op-10 5.0g；Water 23.0g；Defoamer 0.25g, mechanical agitation, dispersed, make component A, stand-by；Weigh potassium permanganate 0.6g, titanyl sulfate 0.35g, aluminium dihydrogen phosphate 11g, boric acid 5.5g, ammonium molybdate 0.25g, cerous nitrate 0.05g, water 40g, ultrasonic dissolution, make B component, stand-by；Weigh γ-glycidyl ether oxygen propyl trimethoxy silicane 20g, water 19g, methyl alcohol 5.0g, under 50 DEG C of water bath condition, magnetic agitation to water white transparency, then drip the watery hydrochloric acid 2.0g of 1mol/L, and sealing hydrolysis 9 hours, make component C, stand-by；Weigh non-ionic polyurethane association thickener 15.0g and white carbon 2.5g, stir, stand-by.
Four components in mass ratio 4:3.5:2.5:1 mixing, concrete preparation method：Under the conditions of 400rmp is continuously stirred, B component is added drop-wise in component A component A with 2 drops/sec of speed, after dripping, continues stirring 40min；Again C component is added in A, B blending ingredients, continue stirring 40min；Again D component is added in A, B, C blending ingredients, continue stirring 1.0h, that is, obtain aqueous chromium-free Dyclo paint.
It is being intended on corrosion-resistant base material coat using dip coating manner, applying five using five and dry five burning circulation technologies, 90 DEG C of drying temperature, drying time 30min, 200 DEG C of sintering curing temperature, sintering curing time 30min.
20.5 μm of coating layer thickness after tested, standard Neutral salt spray test 1000h no red rust.
Claims (4)
1. a kind of aqueous chromium-free Dyclo paint, is grouped into it is characterised in that four kinds of components in mass ratio 4 by tetra- kinds of groups of A, B, C, D:3.5:2.5:1 mixing；
Described component A by weight 100% is counted, and is mixed by following：Zinc powder 25 ~ 45wt%, aluminium powder 5 ~ 10wt%, organic solvent 15 ~ 25wt%, dispersant 4 ~ 8wt%, water 30 ~ 50wt%, defoamer 0.2 ~ 0.4wt%；
Described B component by weight 100% is counted, and is mixed by following：Potassium permanganate 0.5 ~ 1.5wt%, titanyl sulfate 0.5 ~ 1.0wt%, aluminium dihydrogen phosphate 15 ~ 20wt%, boric acid 8 ~ 12wt%, ammonium molybdate 0.1 ~ 0.5wt%, cerous nitrate 0.05 ~ 0.1wt%, water 65 ~ 70wt%；
Described component C by weight 100% is counted, and is formed by following mixed hydrolysis：γ-glycidyl ether oxygen propyl trimethoxy silicane 40 ~ 50wt%, water 30 ~ 50wt%, methyl alcohol 5 ~ 20wt%, 1mol/L watery hydrochloric acid 2 ~ 5wt%；
Described D component by weight 100% meter, is mixed by following：Non-ionic polyurethane association thickener 80 ~ 90% and white carbon 10 ~ 20%.
2. as claimed in claim 1 a kind of aqueous chromium-free Dyclo paint it is characterised in that described zinc powder, aluminium powder are flakey, 0.15-0.30 μm of thickness, 10-20 μm of diameter；Described organic solvent is ethylene glycol, one or more mixing of n-butanol, glycerine, diethylene glycol；Described dispersant is one or more mixing of OP-10, TX-100 or NP-5, and described defoamer is liquid non-silicon defoaming agent.
3. the preparation method of as arbitrarily described a kind of aqueous Dyclo paint in claim 1-2：
Weigh zinc powder, aluminium powder in proportion, add organic solvent, dispersant, water, defoamer, mechanical agitation, dispersed, make component A, stand-by；
Weigh potassium permanganate, titanyl sulfate, aluminium dihydrogen phosphate, boric acid, ammonium molybdate, cerous nitrate, water, ultrasonic dissolution in proportion, make B component, stand-by；
Weigh γ-glycidyl ether oxygen propyl trimethoxy silicane, water, methanol solution in proportion, under 50 DEG C of water bath condition, magnetic agitation to water white transparency, then drip the watery hydrochloric acid of 1mol/L, and sealing hydrolysis 8 ~ 12 hours, make component C, stand-by；
Weigh non-ionic polyurethane association thickener and white carbon in proportion, stir, stand-by；
Component A, under the conditions of 300 ~ 500rmp is continuously stirred, B component is added drop-wise in component A with 1 ~ 3 drop/sec of speed, after dripping, continues stirring 30 ~ 60min；Again C component is added in A, B mixed liquor, continue stirring 30 ~ 60min；Again D component is added in A, B, C mixed liquor, continue stirring 1 ~ 2h, that is, obtain aqueous chromium-free Dyclo paint.
4. the using method of a kind of aqueous Dyclo paint as described in claim 1-3, it is characterized in that, it is being intended on corrosion-resistant base material coat using dip coating manner, using applying-drying-burning circulation technology, until coated weight reaches 200 ~ 300mg/dm2,8 ~ 20 μm of coating layer thickness, 80 ~ 90 DEG C of drying temperature, drying time 15 ~ 20min, 180 ~ 200 DEG C of sintering curing temperature, sintering curing time 20 ~ 60min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510453837.6A CN106398521B (en) | 2015-07-29 | 2015-07-29 | A kind of aqueous chromium-free Dyclo paint and preparation method thereof and application method |
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| CN201510453837.6A CN106398521B (en) | 2015-07-29 | 2015-07-29 | A kind of aqueous chromium-free Dyclo paint and preparation method thereof and application method |
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| CN106398521A true CN106398521A (en) | 2017-02-15 |
| CN106398521B CN106398521B (en) | 2019-02-15 |
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| CN109722085A (en) * | 2018-12-25 | 2019-05-07 | 北京化工大学 | A kind of aqueous chromium-free Dyclo paint and preparation method thereof |
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Address after: Gaoming District of Foshan city in Guangdong province 528531 city streets Fu Wan Xing Fu Road No. 13 Co-patentee after: FOSHAN ZHONGKE BANGDA INORGANIC FUNCTIONAL MATERIALS CO.,LTD. Patentee after: Foshan Gaoming District (Chinese Academy of Sciences) New Material Industry Research Institute Address before: Gaoming District of Foshan city in Guangdong province 528531 city streets Fu Wan Xing Fu Road No. 13 Co-patentee before: FOSHAN ZHONGKE BANGDA INORGANIC FUNCTIONAL MATERIALS CO.,LTD. Patentee before: FOSHAN GAOMING (CAS) CENTER FOR NEW MATERIALS |
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