CN106398521B - A kind of aqueous chromium-free Dyclo paint and preparation method thereof and application method - Google Patents
A kind of aqueous chromium-free Dyclo paint and preparation method thereof and application method Download PDFInfo
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Abstract
The invention discloses a kind of aqueous chromium-free Dyclo paints and preparation method thereof, belong to technical field of metal anti-corrosion.Its technical solution is that four components are respectively configured, and 4:3.5:2.5:1 in mass ratio mixes to arrive aqueous chromium-free Dyclo paint.Wherein, component A: flake zinc powder and aluminium powder being mixed, dispersing agent, organic solvent, water, defoaming agent are added, and are dispersed with stirring uniformly；B component: by potassium permanganate, titanyl sulfate, aluminium dihydrogen phosphate, boric acid, ammonium molybdate, water mixed dissolution；Component C: organosilicon hydrolyzation liquid；D group is divided into thickener.Chromium-free Dyclo coating prepared by the present invention is fine and close, hardness is high, corrosion resisting property is good；Organic matter is few in coating, and volatile matter effect on environment is small；Sintering temperature is low, energy saving.
Description
Technical field
The present invention relates to a kind of aqueous chromium-free Dyclo paints and preparation method thereof, belong to technical field of metal anti-corrosion.
Background technique
Because in Dacromet Technology containing toxic and carcinogenesis Cr6+.For pollution of chromium problem, various countries have begun to take more next
Stringenter measure.Currently, developed country has all strictly forbidden carrying out Dacroment production and coating processing in native country, by overseas
Investment, is transferred to the not stringent country of contamination control for processing factory, then reimportations.In the case, China also takes
Some restrictions, " electronics and IT products prevention and cure of pollution management method " regulation, from July 1st, 2006, sell within the border in China
All electronics and IT products sold all must not be containing including Cr6+Poisonous and harmful substance Deng including.But due to the Chrome-free in China
For Dacromet Technology also in the exploratory stage, most of production line still coats Dacroment containing chromium.
Currently, chromium-free Dyclo technology realizes that the product of industrialization is less, the Geomet coating of MCI company of the U.S. and Germany
The Delta coating of EDLTA company is generally used in developed country, but since price ratio Dacroment containing chromium is high, also nothing
Method large-scale popularization.Foreign technology monopolization, forces China's independent development, grinding for domestic chromium-free Dyclo technology is carried out in autonomous innovation
Hair.
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 enough, ingredient does not contain passivator, and the coating shelf-life is very short.Patent CN 102277022A reports a kind of aqueous nothing
Chromium Dyclo paint and preparation method thereof, using phytic acid as passivator, passivation effect is limited, and acid too strong, easily and zinc-aluminium
Powder reaction is fierce.102504700 A of patent CN reports a kind of aqueous chromium-free zinc-aluminum paint and preparation method thereof, is not directed to blunt
Agent has that the shelf-life is short.Water base chromium-free zinc aluminum masking liquid of 102911534 A of patent CN and preparation method thereof and use
Method uses resin as bonding agent, there are problems that resistance to ag(e)ing.103740152 A of patent CN reports a kind of graphite
The modified chromium-free Dyclo paint of alkene, the hardness and anti-corrosive properties of coating is improved by increasing graphene, but due to grapheme material
Price is very expensive, at present can not also large-scale use.
Summary of the invention
In the present invention, in order to solve, existing chromium-free Dyclo paint coating is not fine and close enough, there is still a need for raising to ask for corrosion resistance
Topic, provides that a kind of coating is fine and close, the good aqueous chromium-free Dyclo paint of corrosion resistance.
Aqueous chromium-free Dyclo paint preparation method provided by the invention, simple process, cost is relatively low, is suitable for industrializing
Production.
What the invention is realized by the following technical scheme:.
Aqueous chromium-free Dyclo paint of the invention is grouped as by tetra- kinds of groups of A, B, C, D, each component sequence in mass ratio 4:
3.5:2.5:1 mixing.
Component A by weight 100% calculates, and is mixed by following: 25 ~ 45wt% of zinc powder, 5 ~ 10wt% of aluminium powder, organic solvent
15 ~ 25wt%, 4 ~ 8wt% of dispersing agent, 30 ~ 50wt% of water, 0.2 ~ 0.4wt% of defoaming agent.
B component by weight 100% calculates, and is mixed by following: 0.5 ~ 1.5wt% of potassium permanganate, and titanyl sulfate 0.5 ~
1.0wt%, 15 ~ 20wt% of aluminium dihydrogen phosphate, 8 ~ 12wt% of boric acid, 0.1 ~ 0.5wt% of ammonium molybdate, 0.05 ~ 0.1wt% of cerous nitrate, water 65
~70wt%。
Component C by weight 100% calculates, and is formed by following mixed hydrolysis: γ-glycidyl ether oxygen propyl trimethoxy silicon
40 ~ 50wt% of alkane, 30 ~ 50wt% of water, 2 ~ 5wt% of methanol 5 ~ 20wt%, 1mol/L dilute hydrochloric acid.
D component by weight 100% calculates, and is mixed by following: nonionic polyurethane Associative thickener 80 ~ 90% and white
Carbon black 10 ~ 20%.
A kind of aqueous chromium-free Dyclo paint of the present invention, further technical solution are using flake zinc
Powder, aluminium powder, 0.15-0.30 μm of thickness, 10-20 μm of diameter；Organic solvent uses ethylene glycol, n-butanol, glycerine, diethyl two
One or more of mixing of alcohol；Dispersing agent uses one kind or mixing of OP-10, TX-100 or NP-5；Defoaming agent is non-using liquid
Silicon defoaming agent.
A kind of aqueous chromium-free Dyclo paint of the invention, further preparation method:.
Zinc powder, aluminium powder are weighed in proportion, and organic solvent, dispersing agent, water, defoaming agent is added, mechanical stirring is evenly dispersed,
Component A is made, for use.
Potassium permanganate, titanyl sulfate, aluminium dihydrogen phosphate, boric acid, ammonium molybdate, cerous nitrate, water are weighed in proportion, and ultrasound is molten
Solution, is made B component, for use.
γ-glycidyl ether oxygen propyl trimethoxy silicane, water, methanol solution are weighed in proportion, under 50 DEG C of water bath conditions
Component C is made, for use in magnetic agitation to dilute hydrochloric acid colorless and transparent, then that 1mol/L is added dropwise, sealing hydrolysis 8 ~ 12 hours；
Nonionic polyurethane Associative thickener and white carbon black are weighed in proportion, is stirred evenly, for use.
Four components 4:3.5:2.5:1 in mass ratio mixing, specific preparation method: component A is persistently stirred in 300 ~ 500rmp
Under the conditions of mixing, B component is added drop-wise in component A with 1 ~ 3 drop/sec of speed, after dripping, continues 30 ~ 60min of stirring；Again by C group
Part is added in A, B mixed liquor, continues 30 ~ 60min of stirring；D component is added in A, B, C mixed liquor again, continues 1 ~ 2h of stirring, i.e.,
Obtain aqueous chromium-free Dyclo paint.
Further application method: a kind of aqueous chromium-free Dyclo paint of the present invention is existed using dip coating manner
It is intended to coat on corrosion-resistant substrate, using painting-baking-burning circulation technology, until coated weight reaches 200 ~ 300mg/dm2, coating layer thickness 8
~ 20 μm, 80 ~ 90 DEG C of drying temperature, 15 ~ 20min of drying time, 180 ~ 200 DEG C of sintering curing temperature, the sintering curing time 20 ~
60min。
Advantages of the present invention: 1, coating is fine and close, hardness is high, corrosion resisting property is good；2, organic matter is few in coating, and volatile matter is to ring
The influence in border is small；3, sintering temperature is low, the effectively save energy.
Detailed description of the invention
Fig. 1 aqueous chromium-free Dacroment sample.
Fig. 2 aqueous chromium-free Dacroment sample microstructure.
1 ~ 4 sample tests of Fig. 3 embodiment.
Specific embodiment
Embodiment 1.
Weigh zinc powder 21g, aluminium powder 4g, ethylene glycol 17g, op-10 4.5g, water 24g, defoaming agent 0.2g, mechanical stirring,
Component A is made, for use in even dispersion；Weigh potassium permanganate 0.4g, titanyl sulfate 0.3g, aluminium dihydrogen phosphate 10g, boric acid 6.5g, molybdenum
B component is made, for use in sour ammonium 0.2g, cerous nitrate 0.05g, water 40g, ultrasonic dissolution；Weigh γ-glycidyl ether oxygen propyl three
Methoxy silane 19g, water 19g, methanol 3.5g, under 50 DEG C of water bath conditions, magnetic agitation is to colorless and transparent, then is added dropwise 1mol/L's
Dilute hydrochloric acid 1.0g, sealing hydrolysis 10 hours, is made component C, for use；Weigh nonionic polyurethane Associative thickener 15.0g and
White carbon black 3.0g, stirs evenly, for use.
Four components 4:3.5:2.5:1 in mass ratio mixing, specific preparation method: component A continues stirring bar in 400rmp
Under part, B component is added drop-wise in component A with 1 drop/sec of speed, after dripping, continues to stir 50min；A, B is added in C component again
In mixed component, continue to stir 30min；D component is added in A, B, C mixed component again, continues to stir 2h to get aqueous nothing is arrived
Chromium Dyclo paint.
It is coated on being intended to corrosion-resistant substrate using dip coating manner, circulation technology, drying temperature 90 is burnt using three-coat three-baking three
DEG C, drying time 20min, 200 DEG C of sintering curing temperature, sintering curing time 30min.
12 μm of coating layer thickness after tested, 600h is without red rust for standard Neutral salt spray test.
Embodiment 2.
Weigh zinc powder 20.0g；Aluminium powder 5.0g；Ethylene glycol 15.0g；op-10 5.0g；Water 25.0g；Defoaming agent 0.25g, machine
Tool stirring, it is evenly dispersed, component A is made, for use；Weigh potassium permanganate 0.5g, titanyl sulfate 0.3g, aluminium dihydrogen phosphate 10.5g,
B component is made, for use in boric acid 6.5g, ammonium molybdate 0.2g, cerous nitrate 0.05g, water 40g, ultrasonic dissolution；Weigh γ-glycidol
Ether oxygen propyl trimethoxy silicane 20g, water 20g, methanol 4.5g, under 50 DEG C of water bath conditions, magnetic agitation to colorless and transparent, then
The dilute hydrochloric acid 1.5g of 1mol/L is added dropwise, component C is made, for use in sealing hydrolysis 8 hours；Weigh the increasing of non-ionic polyurethane association type
Thick dose of 15.0g and white carbon black 2.5g, stirs evenly, for use.
Four components 4:3.5:2.5:1 in mass ratio mixing, specific preparation method: component A continues stirring bar in 500rmp
Under part, B component is added drop-wise in component A with 3 drops/sec of speed, after dripping, continues to stir 60min；A, B is added in C component again
In mixed component, continue to stir 30min；D component is added in A, B, C mixed component again, continues to stir 2h to get aqueous nothing is arrived
Chromium Dyclo paint.
It is coated on being intended to corrosion-resistant substrate using dip coating manner, circulation technology, drying temperature 90 is burnt using three-coat three-baking three
DEG C, drying time 30min, 200 DEG C of sintering curing temperature, sintering curing time 40min.
11 μm of coating layer thickness after tested, 720h is without red rust for standard Neutral salt spray test.
Embodiment 3.
Weigh zinc powder 20.0g；Aluminium powder 5.0g；Ethylene glycol 16.0g；op-10 5.5g；Water 23.0g；Defoaming agent 0.25g, machine
Tool stirring, it is evenly dispersed, component A is made, for use；Weigh potassium permanganate 0.5g, titanyl sulfate 0.35g, aluminium dihydrogen phosphate 11g,
B component is made, for use in boric acid 6.0g, ammonium molybdate 0.25g, cerous nitrate 0.05g, water 40g, ultrasonic dissolution；It is sweet to weigh γ-shrink
Oily ether oxygen propyl trimethoxy silicane 22g, water 19g, methanol 6.0g, under 50 DEG C of water bath conditions, magnetic agitation to colorless and transparent,
The dilute hydrochloric acid 2.0g of 1mol/L is added dropwise again, component C is made, for use in sealing hydrolysis 12 hours；Weigh non-ionic polyurethane association type
Thickener 15.0g and white carbon black 3.0g, stirs evenly, for use.
Four components 4:3.5:2.5:1 in mass ratio mixing, specific preparation method: component A continues stirring bar in 300rmp
Under part, B component is added drop-wise in component A with 2 drops/sec of speed, after dripping, continues to stir 60min；A, B is added in C component again
In mixed component, continue to stir 30min；D component is added in A, B, C mixed component again, it is aqueous to get arriving to continue stirring 1.5h
Chromium-free Dyclo paint.
It is coated on being intended to corrosion-resistant substrate using dip coating manner, applies two using two and dry two burning circulation technologies, drying temperature 80
DEG C, drying time 20min, 180 DEG C of sintering curing temperature, sintering curing time 30min.
8.5 μm of coating layer thickness after tested, 480h is without red rust for standard Neutral salt spray test.
Embodiment 4.
Component A: zinc powder 22.0g；Aluminium powder 4.0g；Ethylene glycol 17.0g；op-10 5.0g；Water 23.0g；Defoaming agent 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, methanol 5.0g, 1mol/L dilute hydrochloric acid
2.0g；
D component: nonionic polyurethane Associative thickener 15.0g and white carbon black 2.5g.
Weigh zinc powder 22.0g；Aluminium powder 4.0g；Ethylene glycol 17.0g；op-10 5.0g；Water 23.0g；Defoaming agent 0.25g, machine
Tool stirring, it is evenly dispersed, component A is made, for use；Weigh potassium permanganate 0.6g, titanyl sulfate 0.35g, aluminium dihydrogen phosphate 11g,
B component is made, for use in boric acid 5.5g, ammonium molybdate 0.25g, cerous nitrate 0.05g, water 40g, ultrasonic dissolution；It is sweet to weigh γ-shrink
Oily ether oxygen propyl trimethoxy silicane 20g, water 19g, methanol 5.0g, under 50 DEG C of water bath conditions, magnetic agitation to colorless and transparent,
The dilute hydrochloric acid 2.0g of 1mol/L is added dropwise again, component C is made, for use in sealing hydrolysis 9 hours；Weigh non-ionic polyurethane association type
Thickener 15.0g and white carbon black 2.5g, stirs evenly, for use.
Four components 4:3.5:2.5:1 in mass ratio mixing, specific preparation method: component A continues stirring bar in 400rmp
Under part, B component is added drop-wise in component A with 2 drops/sec of speed, after dripping, continues to stir 40min；A, B is added in C component again
In mixed component, continue to stir 40min；D component is added in A, B, C mixed component again, it is aqueous to get arriving to continue stirring 1.0h
Chromium-free Dyclo paint.
It is coated on being intended to corrosion-resistant substrate using dip coating manner, applies five using five and dry five burning circulation technologies, drying temperature 90
DEG C, drying time 30min, 200 DEG C of sintering curing temperature, sintering curing time 30min.
20.5 μm of coating layer thickness after tested, 1000h is without red rust for standard Neutral salt spray test.
Claims (4)
1. a kind of aqueous chromium-free Dyclo paint is grouped as, it is characterised in that four kinds of components are in mass ratio by tetra- kinds of groups of A, B, C, D
4:3.5:2.5:1 mixing；
The component A by weight 100% is counted, and is mixed by following: 25~45wt% of zinc powder, aluminium powder 5~10wt%, organic
15~25wt% of solvent, 4~8wt% of dispersing agent, 30~50wt% of water, 0.2~0.4wt% of defoaming agent；
The B component by weight 100% is counted, and is mixed by following: 0.5~1.5wt% of potassium permanganate, titanyl sulfate 0.5
~1.0wt%, 15~20wt% of aluminium dihydrogen phosphate, 8~12wt% of boric acid, 0.1~0.5wt% of ammonium molybdate, cerous nitrate 0.05~
0.1wt%, 65~70wt% of water；
The component C by weight 100% is counted, and is formed by following mixed hydrolysis: γ-glycidyl ether oxygen propyl trimethoxy silicon
40~50wt% of alkane, 30~50wt% of water, 2~5wt% of methanol 5~20wt%, 1mol/L dilute hydrochloric acid；
The D component by weight 100% is counted, and is mixed by following: nonionic polyurethane Associative thickener 80~90%
With white carbon black 10~20%.
2. a kind of aqueous chromium-free Dyclo paint as described in claim 1, which is characterized in that the zinc powder, aluminium powder are squama
Sheet, 0.15-0.30 μm of thickness, 10-20 μm of diameter；The organic solvent is ethylene glycol, n-butanol, glycerine, diethyl two
One or more of mixing of alcohol；The dispersing agent is one or more of mixing of OP-10, TX-100 or NP-5, and described disappears
Infusion is liquid non-silicon defoaming agent.
3. a kind of preparation method of aqueous chromium-free Dyclo paint as claimed in claim 1 or 2:
Zinc powder, aluminium powder are weighed in proportion, organic solvent, dispersing agent, water, defoaming agent are added, mechanical stirring is evenly dispersed, and A is made
Component, for use；
Potassium permanganate, titanyl sulfate, aluminium dihydrogen phosphate, boric acid, ammonium molybdate, cerous nitrate, water, ultrasonic dissolution, system are weighed in proportion
At B component, for use；
Weigh γ-glycidyl ether oxygen propyl trimethoxy silicane, water, methanol in proportion, under 50 DEG C of water bath conditions, magnetic agitation
It is extremely colorless and transparent, then the dilute hydrochloric acid of 1mol/L is added dropwise, component C is made, for use in sealing hydrolysis 8~12 hours；
Nonionic polyurethane Associative thickener and white carbon black are weighed in proportion, is stirred evenly, and D component are made, for use；
Component A is added drop-wise in component A in the case where 300~500rpm continues stirring condition, by B component with 1~3 drop/sec of speed, drop
After adding, continue 30~60min of stirring；Component C is added in A, B mixed liquor again, continues 30~60min of stirring；Again by D component
It is added in A, B, C mixed liquor, continues 1~2h of stirring to get aqueous chromium-free Dyclo paint is arrived.
4. a kind of application method of aqueous chromium-free Dyclo paint as claimed in claim 1 or 2, which is characterized in that using leaching
Painting mode coats on being intended to corrosion-resistant substrate, using painting-baking-burning circulation technology, until coated weight reaches 200~300mg/dm2,
It 8~20 μm of coating layer thickness, 80~90 DEG C of drying temperature, 15~20min of drying time, 180~200 DEG C of sintering curing temperature, burns
Tie 20~60min of curing time.
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| CN107022300B (en) * | 2017-03-20 | 2019-09-03 | 广东省测试分析研究所（中国广州分析测试中心） | A kind of aqueous chromium-free zinc aluminum anticorrosive paint and preparation method thereof |
| CN106893485B (en) * | 2017-03-22 | 2019-04-12 | 广东工业大学 | A kind of lower chromium-free zinc aluminum coating of sintering temperature and its preparation method and application |
| CN109111775A (en) * | 2018-07-27 | 2019-01-01 | 广东工业大学 | A kind of Chrome-free Zn-Al coating and a kind of Chrome-free Zn-Al coating |
| 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 |
| CN115029063A (en) * | 2022-06-13 | 2022-09-09 | 中山奕博高分子材料科技有限公司 | Water-based chromium-free zinc-aluminum coating and preparation method and use method thereof |
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| EP1500686B1 (en) * | 2003-07-22 | 2011-07-13 | Hoden Seimitsu Kako Kenkyusho Co., Ltd. | Rust inhibitive treatment method for metals |
| CN1556246A (en) * | 2004-01-08 | 2004-12-22 | 中国国际海运集装箱（集团）股份有限 | Chromium less deactivation liquid |
| CN100590156C (en) * | 2008-04-28 | 2010-02-17 | 山东大学 | Chromium-free Dyclo paint |
| CN102277022B (en) * | 2011-08-17 | 2013-10-30 | 南京新化原纳米科技有限公司 | Water-based chrome-free Dacromet coating solution and preparation method thereof |
| CN102911534B (en) * | 2012-10-18 | 2015-06-17 | 王宏 | Water base non-chrome zinc-aluminium coating and methods for preparing and using same |
| CN104250518A (en) * | 2014-09-11 | 2014-12-31 | 王广波 | Water-based chromium-free anti-corrosion coating |
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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 FUNCTION MATERIAL 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 FUNCTION MATERIAL Co.,Ltd. Patentee before: FOSHAN GAOMING (CAS) CENTER FOR NEW MATERIALS |
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