CN101289582A - Formula of water-soluble high corrosion resistant zinc chrome coating - Google Patents
Formula of water-soluble high corrosion resistant zinc chrome coating Download PDFInfo
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- CN101289582A CN101289582A CNA2008101236069A CN200810123606A CN101289582A CN 101289582 A CN101289582 A CN 101289582A CN A2008101236069 A CNA2008101236069 A CN A2008101236069A CN 200810123606 A CN200810123606 A CN 200810123606A CN 101289582 A CN101289582 A CN 101289582A
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Abstract
The invention relates to an aqueous high corrosion-resistant zinc-chrome coating formula, which comprises three compositions, wherein, the weight ratio between the composition 1 and the composition 2 is 4:6; the composition 1 is prepared by raw materials with the following weight proportions: 0.5 portion of zinc stearate, 1.5 portions of No. 200 solvent naphtha, 0.5 portion of NP4, 1.5 portions of polyoxyethylene nonylphenolether, 8 portions of dipropylene glycol, 6 portions of silane coupling agent, 18 portions of zinc powder, and 4 portions of aluminum powder; the composition 2 is prepared by raw materials with the following weight proportions: 54 portions of deionized water or secondary distilled water, 4 portions of chromic anhydride, 1 portion of boracic acid, and 1 portion of zinc oxide; the composition 3 is droxyethylcellulose and is 1 to 2 thousandths of the total weight of the composition 1 and the composition 2. The invention does not contain any resin, non-resin and amorphous organo-chromium and organo-boron in the coating formed after the use firmly stick a zinc-aluminum sheet and iron radix together; silane coupling agent is added in the coating, which improves the interlayer binding force of the cohesion and two coatings; and the formula does not contain cobalt nitrate and has low production cost.
Description
Technical field
The present invention relates to a kind of formulation for coating material, relate to specifically that a kind of performance is good, the formula of water-soluble high corrosion resistant zinc chrome coating of low production cost, belong to the coating field of engineering technology.
Background technology
Dacroment (DACROMET), domestic called after zinc-chromium coating, be a kind of novel corrosion resistant coating, compare with traditional electro-galvanizing: the zinc-chromium coating corrosion resistance nature is extremely strong, is galvanized 7-10 times, no hydrogen embrittlement, be specially adapted to the high strength stressed member, high heat resistance, 300 ℃ of heat resisting temperatures, the high strength component that is particularly useful for automobile, motorcycle engine parts has hypertonicity, high tack, high anti-attrition, high weather resistance, high resistance to chemicals product stability, nonstaining property.The body material scope of Dacromet Technology: steel product and non-ferrous metal such as aluminium, magnesium and alloy thereof, copper, nickel, zinc etc. and alloy thereof.And pollution-free in the coating whole process, on metal finishing history a revolution, be the typical new and high technology of metal finishing in the world today.
Dacroment is born in later 1950s the earliest, in the North America, winter of Northern Europe cold, ice sheet abundant on the road seriously hinders travelling of motor vehicle, people are sprinkling upon the temperature that method on the ground reduces zero pour with salt, alleviate the The coast is clear problem like this, but the chlorion in the Repone K that is right after and comes has corroded steel substrate, and the vehicles are badly damaged, severe problem has occurred.It is the main high dispersive water soluble paint that aluminium flake, chromic acid, deionized water are made solvent that adds simultaneously that the scientist Mai Ke Martin of the U.S. has developed with the metal zinc metal sheet, coating sticks on the metallic matrix, apply baking through the circulation of full cut-off road, form very thin coating, the Dacroment coating is successfully resisted the erosion of chlorion, aseptic technic has entered new step, has reformed short defective of anticorrosion life-span of traditional technology.Arrived the seventies Japan from introducing Dacromet Technology, the Japanese annual steel part corrosion tonnage of island country is big, therefore especially pay attention to aseptic technic, Dacromet Technology is again by Japanese improvement, China formally introduced Dacromet Technology from Japan in 1994, the initial automobile component that only are used for national defense industry and production domesticization have now developed into multiple industries such as electric power, building, oceanographic engineering, household electrical appliance, hardware and standardized component, railway, bridge, tunnel, highway barrier, petrochemical complex, biotechnology, medicine equipment powder metallurgy.
In the present employed Dacroment coating, all contain resin or compound resin, so its resin attitude or the organic chromium of crystalline state, organic boron etc., make that the iron-based binder of zinc-aluminium sheet in the coating and work piece is bad, cause delamination easily, make its inefficacy.
In addition, well-known, metal-salts such as Zinic stearas are in coating and plastic industry and be used as matting agent, remover.But because present Dyclo paint do not contain the silane coupling agent, but so these soaps non-activity reactive functionality, it is bad all the time that it holds power, the interlayer bonding force that the force of cohesion of coating and two is coated with is not high.
Simultaneously, contain expensive Xiao Suangu in the external Dyclo paint, cost is very high.
Summary of the invention
Be to solve the deficiencies in the prior art, the object of the present invention is to provide that a kind of performance is good, the formula of water-soluble high corrosion resistant zinc chrome coating of low production cost.
For achieving the above object, the present invention is achieved by the following technical solutions:
A kind of formula of water-soluble high corrosion resistant zinc chrome coating, it is characterized in that comprising three components: component 1, component 2 and component 3, the weight ratio of described component 1 and component 2 is 4: 6, and described component 1 is made by following materials of weight proportions: Zinic stearas (18 zinc): 0.5,200# solvent oil: 1.5, NP
4(TX
4): 0.5, polyoxyethylene nonylphenol ether (jFC): 1.5, dipropylene glycol (DPG): 8, silane coupling agent (KH-560): 6, zinc powder: 18, aluminium powder: 4; Described component 2 is made by following materials of weight proportions: deionized water or redistilled water: 54, chromic trioxide (CrO
3): 4, boric acid: 1, zinc oxide: 1; Described component 3 is a Natvosol, its weight be component 1 and component 2 gross weight 1～2 ‰.
The invention has the beneficial effects as follows: the present invention does not contain any resin, and the non-resin attitude in the coating that forms after using, amorphous organic chromium, organic boron etc. are bonded together zinc-aluminium sheet and iron-based firmly as film forming matter and binding agent; And, in coating, increased silane coupling agent, improved the interlayer bonding force that the power of holding, force of cohesion and two are coated with; Simultaneously, do not contain Xiao Suangu, low production cost among the present invention.
Embodiment
Below in conjunction with embodiment the present invention specifically is described below.
Formula of water-soluble high corrosion resistant zinc chrome coating of the present invention comprises three components, wherein:
Component 1:
Zinic stearas (18 zinc): 5kg, 200# solvent oil: 15kg, NP
4(TX
4): 5kg, polyoxyethylene nonylphenol ether (jFC): 15kg, dipropylene glycol (DPG): 80kg, silane coupling agent (KH-560): 60kg, zinc powder: 180kg, aluminium powder: 40kg;
Component 2:
Deionized water or redistilled water: 540kg, chromic trioxide (CrO
3): 40kg, boric acid: 10kg, zinc oxide: 10kg;
Component 3:
Natvosol 1.5kg.
Component 1 adopts kneader to stir, and does the sticky paste of emulsification for silvery white, and qualified kneading process in fact is that emulsifying agent is finished migration and the wrapping to the metal powder interface, makes its surface be modified as water (hydrophilic) by oil phase (hydrophobic).Metal powder is well dispersed in the dipropylene glycol.Final and component 2 is mixed into monomeric powder, progressively finishes surface oxidation, makes the coating of hot setting have sticking power up to standard and high anti-corrosion.
1 back Huang in water is moving for the sticking component of the method for quickly detecting useable glass rod of component 1.Whether observation component 1 is scattered in fast and is vaporific in the water, and does not have powder polymer precipitation to be qualified product; Otherwise it is defective.
Component 2 stirs in stirring tank, is the purplish red clear solution after qualified dissolving is stirred, even in the winter time-15 ℃ the time, the boric acid crystal that do not have in the component 2 is separated out.Component 2 qualified dissolvings are stirred back pH value and be should be between 0.7～0.9.If pH 〉=1.0, then should delay time be stirred to pH to 0.9 when following till.
Component 3 Natvosols are water-soluble polymers, easily moisture absorption conglomeration and losing efficacy, and meeting this situation, can to put into electric heating wind baking oven with pallet saturating with 60 ℃ of temperature constant temperature dryings bakings, and corresponding tool (as stainless steel shovel) the grind up grain use of resaling of exerting pressure is manually arranged.
Pay special attention to select for use deionized water or redistilled water formulation components 2.And the container that is filled with water should keep clean pollution-free, makes it customizations again.Must not buy the water dosing for 2 barrels with component.Water is become sour---oxidation also mixes, and makes the component 2 can not be qualified.
Qualified deionized water and redistilled water pH are about 6.5.Certainly also need not non-detection deionization electrical conductivity of water (this is a qualified deionized water scientific basis up to standard), despise or the quality of ignoring the coating material production water can cause quality accident equally.
Dyclo paint is coated with the anti-corrosion scientific basis of floor height---basic theory:
Which kind of coating no matter, also which kind of application mode no matter, the coating on coated article surface all is a remnant---what this volatilization was useless all vapors away, and what stay into coating all is useful residue.The formed coating of coating of the present invention is not a sacrificial anode, more is not inorganic coating.Sheet Zn, Al powder are the aggregate (frame) of heat conduction, heat absorption therein, i.e. filler does not have the corrosion protection effect of a bit electrochemical-based reason, only plays a kind of shielding effect because of its pattern at most.The foundation of differentiating the coating organic or inorganic defines with its film forming matter, and vinylformic acid or urethane aluminium powder paint can only be organic coatings.And the present invention is exactly an organic coating.
The film forming matter of the formed coating of coating of the present invention or to be binding agent be C
9(n-nonanoic acid)-C
18The chromic salts of (stearic acid), boric acid wherein do not contain any resin.And the component 2 of pH＜2 is zinc dichromate (ZnCr of strong oxidizing property
2O
7, wherein Cr is a sexavalence) and chromic acid (H
2CrO
4) mixing solutions, the quilt that emulsifying agent in it and the component 1, stearic acid constitute is coated with the wet coating on part surface, in meshbeltfurnace, finish fierce redox reaction (dipropylene glycol is high boiling solvent or solvent) under high temperature, oxygen, all conditions of time, finally remain in workpiece surface C
9-C
18The lipid acid chromic salts wherein has chromic dichromic acid zinc salt and chromic chromium stearate.And these non-resin attitudes, amorphous organic chromium, organic boron are determining to be coated with that floor height is anti-corrosion, heat-resisting, the theory characteristic of chemicals-resistant, and zinc-aluminium sheet and iron-based are bonded together firmly as film forming matter and binding agent.
Metal-salts such as Zinic stearas are used as matting agent, remover in coating and plastic industry, for the interlayer bonding force that the force of cohesion and two that improves coating is coated with, added the KH-560 silane coupling agent in the present invention.Also therefore, the corrosion resistance coating of inferior light is better.
Dacromet Technology is the antirust a kind of coating material novel process of iron-base workpiece face.Its science and practicality be must compound coating surface-functionalized-as increase the back coating application of hard, anti-attrition, painted, acid and alkali-resistance etc., and just can be applicable to different working conditionss and environment, and avoid coating project to lose efficacy.
The foregoing description does not limit the present invention in any form, and all technical schemes that mode obtained of taking to be equal to replacement or equivalent transformation all drop in protection scope of the present invention.
Claims (1)
1, formula of water-soluble high corrosion resistant zinc chrome coating, it is characterized in that comprising three components: component 1, component 2 and component 3, the weight ratio of described component 1 and component 2 is 4: 6, and described component 1 is made by following materials of weight proportions: Zinic stearas: 0.5,200# solvent oil: 1.5, NP
4: polyoxyethylene nonylphenol ether 0.5: 1.5, dipropylene glycol: 8, silane coupling agent: 6, zinc powder: 18, aluminium powder: 4; Described component 2 is made by following materials of weight proportions: deionized water or redistilled water: 54, chromic trioxide: 4, boric acid: 1, zinc oxide: 1; Described component 3 is a Natvosol, its weight be component 1 and component 2 gross weight 1～2 ‰.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101236069A CN101289582A (en) | 2008-05-22 | 2008-05-22 | Formula of water-soluble high corrosion resistant zinc chrome coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101236069A CN101289582A (en) | 2008-05-22 | 2008-05-22 | Formula of water-soluble high corrosion resistant zinc chrome coating |
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|---|---|
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ID=40034033
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104004397A (en) * | 2013-09-18 | 2014-08-27 | 中磁科技股份有限公司 | Masking liquid used for surface protection of neodymium iron boron magnet, and preparation method thereof |
| CN104008874A (en) * | 2013-09-18 | 2014-08-27 | 中磁科技股份有限公司 | Surface protection method for neodymium-iron-boron permanent-magnet material |
| CN104250462A (en) * | 2014-08-21 | 2014-12-31 | 王广波 | Dacromet coating |
-
2008
- 2008-05-22 CN CNA2008101236069A patent/CN101289582A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104004397A (en) * | 2013-09-18 | 2014-08-27 | 中磁科技股份有限公司 | Masking liquid used for surface protection of neodymium iron boron magnet, and preparation method thereof |
| CN104008874A (en) * | 2013-09-18 | 2014-08-27 | 中磁科技股份有限公司 | Surface protection method for neodymium-iron-boron permanent-magnet material |
| CN104008874B (en) * | 2013-09-18 | 2016-10-26 | 中磁科技股份有限公司 | Neodymium-iron-boron permanent magnetic material surface means of defence |
| CN104004397B (en) * | 2013-09-18 | 2017-01-25 | 中磁科技股份有限公司 | Masking liquid used for surface protection of neodymium iron boron magnet, and preparation method thereof |
| CN104250462A (en) * | 2014-08-21 | 2014-12-31 | 王广波 | Dacromet coating |
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