CN1175061C - Paint containing alloy powder - Google Patents
Paint containing alloy powder Download PDFInfo
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- CN1175061C CN1175061C CNB01129664XA CN01129664A CN1175061C CN 1175061 C CN1175061 C CN 1175061C CN B01129664X A CNB01129664X A CN B01129664XA CN 01129664 A CN01129664 A CN 01129664A CN 1175061 C CN1175061 C CN 1175061C
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Abstract
The present invention relates to paint containing alloy powder, which is characterized in that the paint is prepared from Al-Zn-Mg alloy powder of which the particle size is smaller than 50 micrometers, an adhesive, a curing agent and a solvent or a diluent. The paint has the advantages of good shielding efftct, bacteriostasis performance, antistatic performance and cathodic protection performance. The paint can be widely used for industrial departments such as petroleum, chemical industry, electronics, textile, etc.
Description
The present invention relates to coating composition, a kind of anode type anticorrosive coating that contains the bacteriostatic antistatic of magnalium zinc alloy powder of more specifically saying so.
Reactive metal pigment in the anode type protective system can be prior to protected matrix dissolving, so that matrix metal obtains galvanic protection in corrosive environment.The anode type protective system of commercialization or research report has two kinds: a kind of is commercial zinc-rich paint, and it is to be pigment with pure zinc particulate; What another kind was that Beijing University of Chemical Technology proposes is the SA coating (patent No. is 93105089) of pigment with the aluminium-zinc alloy.
In zinc-rich paint; amount of pigment reaches 90% of dry film weight; like this; pigment volume concentration (PVC) (pigment in coating shared volume fraction) is far longer than the critical volume concentration (the minimum volume concentration that pigment is in contact with one another) of pigment in coating; it is not tight with resin-bonded to add the zinc granule surface; cause the coating shield effectiveness bad, and produce overprotection phenomenons such as liberation of hydrogen, bubbling easily.SA coating uses the Al-Zn alloy powder as pigment, and the existence of Al has improved the bonding properties of pigment and resin, has improved the density of coating; In addition; SA coating has significantly reduced the consumption of pigment; make pigment volume concentration (PVC) subcritical volumetric concentration; so just when guaranteeing the galvanic protection effect; strengthened the shielding properties of paint coatings widely; yet the Al-Zn alloy powder is active not enough in tap water, makes the galvanic protection function of SA coating in tap water and soil not demonstrate fully out.
People have recognized the importance of fungistatic coating more and more.In order to obtain lasting effectively fungistatic coating, it should be noted that those have the metal ion of bacteriostatic activity, comprise silver, gold, platinum, palladium, iridium, copper, tin, antimony, bismuth and zinc metal ion.Though the antibacterial strength of silver is higher than zinc, because zinc has chemically reactive and inexpensive, people also pay close attention to some extent to it.As USP5415865 is to be active constituent with ZnO, adds acidic componentses such as dehydroabietic acid or dehydroabietic acid simultaneously, in the hope of in use discharging to continuous and effective zine ion, antibiotic, treatment tetter.
In order to eliminate static oil product transportation and storage are brought harm, the inside coating that China relevant department is defined in storage tanker and pipe laying should have anti-static function.At present, more existing anti-static and anti-corrosive paints, its product mainly is to have added chemically inert electro-conductive material or conductive auxiliary agent in resin, makes that electroconductibility increases in the coating, to lead away the static that produces because of friction.Yet, with regard to its Corrosion Protection, only be shielding properties by resin, in case damage, coating promptly loses protection function.
From top description as can be seen, existing anode type coating, antibacterial coating and antistatic coating are not to exist the perfect inadequately problem of performance, exist the problem of function singleness exactly.
The objective of the invention is to overcome the deficiency of prior art, propose a kind of can seawater, performance galvanic protection and shield dual function by force and possess the coating of antibacterial and anti-static function simultaneously in the multiple surrounding mediums such as fresh water, soil.
Main technical schemes of the present invention: magnalium zinc alloy powder, binding agent, solidifying agent, solvent or thinner are got through mixed.
The composition of coating composition of the present invention and content thereof (is 100 in the composition weight sum)
Alloy powder 25-40%, binding agent 25-60%, solidifying agent 0-10%, solvent or thinner 2-50%.
The component of alloy powder of the present invention is Al, Mg, Zn and other trace element (this alloy powder patent applied for, number of patent application: 01129665.8) it forms content (is 100 in the composition weight sum): Al 35-60%, Zn+Mg 40-65%, other element 0-1%, described Mg and Zn weight ratio are 0.5-2.5: 1, described other element is selected from Sn, Si, a kind of among the In, two or three mixture alloy powder adopts general atomization process (" metals handbook " the 9th edition the 7th volume, the 179th page, China Machine Press) preparation, be about to Al, Mg, the Zn metal block material is through batching, fusion, operations such as quenching obtain the metal block, then through ball milling, roll, mechanical means such as screening make the alloy powder below 50 microns.Also in raw metal, also add Sn, Si, In in addition, so have the composition of Sn, Si, In in the coating.Alloy powder can be made into the multiple shape that comprises polyhedron, accurate spheroid, sheet.
Binding agent of the present invention comprises Resins, epoxy, resol, urethane, chlorinated rubber, polypropylene, water glass or tetraethoxy polycondensate.
Solidifying agent of the present invention comprises the phosphoric acid of aminated compounds, polyol, concentration 5%, and whether the kind decision of looking film forming matter adds the kind and the quantity of solidifying agent and adding solidifying agent.
Solvent of the present invention or thinner are water-soluble solution or the organic solvents compatible with selected resin, comprise a kind of, two or more mixture in solvent oil, alcohols, ketone, the ester class.
For improving the pliable and tough and erosion resistance of dope layer, also can add auxiliary agent commonly used in the coating industry.
The preferred following composition of coating of the present invention:
(1) coating is formed and weight percent:
Alloy powder 30-40%
Resins, epoxy 20-30%
Polymeric amide 5-8%
Dimethylbenzene-butanols 35-45%
(2) coating is formed and weight percent:
Alloy powder 40-50%
Chlorinated rubber 15-18%
Clorafin 10-12%
Aromatic solvent 20-25%
(3) coating is formed and weight percent:
Alloy powder 30-40%
Alcohol dissolubility thermoset phenolic resin 30-35%
Alcoholic solvent 30-35%
(4) coating is formed and weight percent:
Alloy powder 30-40%
Water glass 50-60%
Phosphoric acid (concentration 5%) 5-10%
(5) coating is formed and weight percent:
Alloy powder 30-40%
Tetraethyl silicate initial stage hydrolyzate 50-60%
Acetone+ethanol 5-10%
(6) coating is formed and weight percent:
Alcoholysis castor oil soap (70%) 30-40%
Alloy powder 30-40%
Dimethylbenzene 30-40%
Preparation method for coating of the present invention: the alloy powder, caking agent, solidifying agent, solvent or the thinner mixing that prepare are got final product.
Advantage of the present invention and effect:
1. the shield effectiveness of coating of the present invention is good, and its reason has two:
(1) existence of Al in the alloy powder is combined closely surface of pigments and resin;
(2) pigment volume concentration (PVC) only is the 1/3-2/3 of critical volume concentration in the coating, and the permeability resistance of paint coatings is compared greatly with zinc-rich paint and improved.
2. coating of the present invention can be implemented the galvanic protection effect to ferrous materials in various water quality, atmosphere and soil, its reason has two:
(1) electrochemical potential of Zn in the pigment and Mg is more negative than iron; can be prior to dissolved ferric iron in corrosive environment; thereby it is realized the galvanic protection function; Zn active higher in brine media wherein; Mg's is active higher in soil and fresh water medium; so the electrochemical activity of Al-Mg-Zn-X alloy powder increases than pure zinc or aluminium-zinc alloy, make coating of the present invention in various corrosive environments, can both be activated and have the galvanic protection performance.In addition, adding a certain amount of Mg in the alloy makes alloy block have the performance of easy grinding and processing.
(2) the control pigment volume concentration (PVC) is the 1/3-2/3 of critical volume concentration, be that pigment accounts between the 22-44% of coating cumulative volume, and control coating thickness is 2-3 times of pigment particle size, at this moment, coating interalloy powder presents semicontinuous state, can guarantee coating electroconductibility like this, coating can form the loop of unimpeded corrosion cell when effectively contacting with ground.
3. coating of the present invention also has bacteriostasis property, and its reason is:
In all metal ions with bacteriostatic activity (silver, golden platinum, palladium, iridium, copper, tin, antimony, bismuth and zinc), zinc is unique have enough chemically reactives and can be used as anode material and its ion toxicity and the relatively low metal of price.When zinc during as the pigment composition of coating, have persistent anode dissolution activity, in the process of ferrous materials being carried out galvanic protection, constantly discharge the free zine ion to surrounding medium, promptly play protection against corrosion and antimicrobial effect simultaneously.
4. coating of the present invention also has antistatic property, this be because:
Dope layer interalloy powder presents semicontinuous state, like this, adds alloy powder itself and has electroconductibility, makes dope layer have certain electroconductibility, and for example the volume resistance of coating reaches 10
5-10
7The Ω .m order of magnitude can effectively be led away because the static that various frictions cause plays anti-static electrification.
In sum, coating of the present invention has more excellent shielding properties and galvanic protection performance than zinc-rich paint and aluminium zinc paint, and coating of the present invention also is applicable to and requires antibacterial and anlistatig occasion.
Coating of the present invention can play shielding buffer action and galvanic protection effect simultaneously to the coating protection of steel, can suppress the corrosion at local defect place effectively, be applicable to various hardwares and the hardware anticorrosion coat in corrosive environments such as various water bodys, atmosphere, soil;
Paint coatings of the present invention is being implemented can constantly discharge the zine ion with bacteriostatic activity in the galvanic protection to ground; be applicable to the top coat of apparatus such as hospital bed, family kitchen caliduct; can satisfy the enhancing of people, to the requirement that guards against cross infection of public place along with growth in the living standard and health perception.
Coating of the present invention also has anti-static function.Static is obvious to all to the harm that industrial production caused.For example, in the production place of inflammable explosive article or dust, mist of oil and the transporting procedures of crude oil, processed oil, organic inflammable liquid, static discharge very easily sets off an explosion and fire; In electronic industry, electrostatic attraction causes adsorbing dust, causes the pollution of unicircuit and semiconductor element, reduces yield rate greatly; Also cause rhizoid to wave, twine harm such as flower breaks end, yarn is entangled with at the textile industry electrostatic attraction.Coating of the present invention is fit to be coated on these occasions and production unit or metal component surface, can play decoration, corrosion-resisting function, can lead away the static that produces because of friction apace again.
Further specify characteristics of the present invention below by specific examples.
Example 1～4
By this example is that general atomization process prepares alloy powder, and its moiety and content see Table 1.
Example 5～9
This example is a preparation coating of the present invention, and wherein the alloy powder of example 5 is alloy powders of example 2, and the alloy powder in the example 6～8 is the alloy powder of example 1, and example 9 interalloy powders are the alloy powder of example 3, and coating is formed and content sees Table 2.
Example 10
This example is that the alloy powder of example 1 is tested its antibacterial ability by the inhibition zone test method(s).
Concrete test method and result:
After a filter paper of westernization (5*5mm) high-temperature sterilization drying, soak with meat soup, it is standby to stick alloy powder to be measured.Streptococcus aureus (ATCC25953), intestinal bacteria (ATCC25922), Pseudomonas aeruginosa (ATCC27853) bacterial strain are inoculated 35 ℃ of broth cultures, 18-14 respectively hour increase bacterium, make No. 0.5 turbidity unit in Maxwell (No. 1 turbidity unit of streptococcus aureus), get intensive streak inoculation on the MH substratum, three line with cotton swab is sticking, 60 ° of each rotations, stick thing to be checked, hatched result of determination 18-24 hour for 35 ℃, hatched again 24 hours, for the second time result of determination.With the biocidal property of quadrat method detection Al-Mg alloy particle (note is made AM), Al-Zn alloy particle (note is made AZ), the result is as shown in table 3.
Example 11
This example carries out the Corrosion Protection test to example 5 coating.
Test method and result: test method is pressed GB1763-79 (paint film chemical reagent resistance assay method) method and is measured, and specifically measures process approach:
Brushing one coat on No. 20 carbon steel sheet, control thickness is solidified after 7 days at 50-70 μ m, does the saline soak test.
With silicone rubber adhesive is internal diameter that 5cm, height are that the transparent organic glass pipe of 6cm is bonded at the surface and has brushed on the carbon steel test plate (panel) of coating; place to solidify and to add the 3%NaCl aqueous solution after 1 day and soaks, observation carbon steel test plate (panel) begins to occur to get rusty time (being that one coat is effectively protected the life-span) of damage phenomenons such as bubbling.
As reference electrode, brine media is 3%NaCl with saturated calomel electrode.Still have only a time constant owing to soak after 30 days in the ac impedance spectroscopy, so the polarization resistance that available stable state linear polarization method records is represented coating resistance roughly.
The result shows, scribbles in 30 days that the carbon steel test plate (panel) of this anode type paint coatings soaks in the 0.3%NaCl aqueous solution, and coating resistance is at 500k Ω .cm
2More than, electropotential-below the 0.85V (SCE), one coat effectively protects the life-span greater than 1 year.Obviously, be that the shielding properties and the Corrosion Protection of paint coatings of pigment is good with alloy particle of the present invention.
Example 12
This example is tested its antibacterial ability to example 5 coating by the inhibition zone test method(s).
Test method and result:
Brush in the good tinplate test piece of polishing in advance, control thickness is the 80-100 micron; Seasoning under the room temperature; Test its antibacterial ability with the inhibition zone test method(s): tinplate is cut into the square of 5mm * 5mm size together with the coating on it, surveys thing as waiting; Other steps are with example 10.Bacteriostatic experiment result to golden yellow grape coccus (ATCC25953), intestinal bacteria (ATCC25922), Pseudomonas aeruginosa (ATCC27853) is respectively 18mm, 20mm and 16mm.
Table 1 alloy powder composition
| Example | The alloy powder composition, % | |||||
| Al | Mg | Zn | Sn | Si | In | |
| Example 1 | 40 | 37 | 23 | 0 | 0 | 0 |
| Example 2 | 39.45 | 30 | 30 | 0.5 | 0.03 | 0.02 |
| Example 3 | 39.5 | 20 | 39 | 0.5 | 1 | 0 |
| Example 4 | 49.1 | 17 | 33 | 0.8 | 0.05 | 0.05 |
Table 2 coating composition
| Example | Alloy powder | Binding agent | Solidifying agent | Solvent or thinner |
| 5 | 37.5％ | Resins, epoxy (E-44)＞25% | Polymeric amide (T31) 6.2% | Solvent (dimethylbenzene: butanols=4: 1) 31.3% |
| 6 | 31.6％ | Alcohol dissolubility thermoset phenolic resin 34.2% | Dimethylbenzene 49.8% ethanol 34.2% | |
| 7 | 25.2％ | Alcoholysis castor oil soap 25.2% | Dimethylbenzene 49.8% dimethylbenzene 49.8% | |
| 8 | 35％ | Chlorinated rubber and clorafin (7: 3) 25.5% | BTX aromatics 39.5% | |
| 9 | 40％ | Tetraethyl silicate initial stage hydrolyzate 56.8% | Ethanol 3.2% |
The inhibition zone test-results of table 3 alloy powder
| Sample | Streptococcus aureus | Intestinal bacteria | Pseudomonas aeruginosa |
| Example 1 | 16mm | 14mm | 20mm |
| AM | 0 | 0 | 10mm |
| AZ | 10mm | 8mm | 15mm |
Claims (8)
1. coating that contains alloy powder is characterized in that composition components comprises alloy powder, binding agent, solidifying agent and solvent or thinner, its moiety and content:
Alloy powder 25-40%, binding agent 25-60%, solidifying agent 0-10%, solvent or thinner 2-50%, above percentage ratio is 100% in composition components weight sum,
Described alloy powder composition and content: A1 35-60%, Zn+Mg 40-65%, other element 0-1%, described Mg and Zn weight ratio are 0.5-2.5, described other element is selected from a kind of, two or three mixture among Sn, Si, the In, above percentage ratio is 100% in moiety weight sum
Described binding agent comprises Resins, epoxy, resol, urethane, chlorinated rubber, polypropylene, water glass or tetraethoxy polycondensate,
Described solidifying agent comprises the phosphoric acid of aminated compounds, polyol, concentration 5%,
Described solvent or thinner comprise a kind of, two or more the mixture in solvent oil, alcohols, ketone, the ester class.
2. according to the described coating of claim 1, it is characterized in that composition components and content:
Alloy powder 30-40%
Resins, epoxy 20-30%
Polymeric amide 5-8%
Dimethylbenzene-butanols 35-45%
Above percentage ratio is 100% in moiety weight sum.
3. according to the described coating of claim 1, it is characterized in that composition components and content:
Alloy powder 40-50%
Chlorinated rubber 15-18%
Clorafin 10-12%
Aromatic solvent 20-25%
Above percentage ratio is 100% in moiety weight sum.
4. according to the described coating of claim 1, it is characterized in that composition components and content:
Alloy powder 30-40%
Alcohol dissolubility thermoset phenolic resin 30-35%
Alcoholic solvent 30-35%
Above percentage ratio is 100% in moiety weight sum.
5. according to the described coating of claim 1, it is characterized in that composition components and content:
Alloy powder 30-40%
Water glass 50-60%
The phosphoric acid 5-10% of concentration 5%
Above percentage ratio is 100% in moiety weight sum.
6. according to the described coating of claim 1, it is characterized in that composition components and content:
Alloy powder 30-40%
Tetraethyl silicate initial stage hydrolyzate 50-60%
Acetone+ethanol 5-10%
Above percentage ratio is 100% in moiety weight sum.
7. according to the described coating of claim 1, it is characterized in that composition components and content:
70% alcoholysis castor oil soap 30-40%
Alloy powder 30-40%
Dimethylbenzene 30-40%
Above percentage ratio is 100% in moiety weight sum.
8. the described coating of claim 1 is used for anticorrosion, antibacterial, anti-static coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB01129664XA CN1175061C (en) | 2001-06-27 | 2001-06-27 | Paint containing alloy powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB01129664XA CN1175061C (en) | 2001-06-27 | 2001-06-27 | Paint containing alloy powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1393488A CN1393488A (en) | 2003-01-29 |
| CN1175061C true CN1175061C (en) | 2004-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB01129664XA Expired - Fee Related CN1175061C (en) | 2001-06-27 | 2001-06-27 | Paint containing alloy powder |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2276171C1 (en) * | 2005-05-23 | 2006-05-10 | Закрытое акционерное общество "ЭКА" | Composition for heat-resistant anticorrosive coating |
| CN102492361B (en) * | 2011-11-15 | 2013-10-02 | 燕山大学 | Heat-radiation anticorrosion paint of magnesium alloy LED shell and preparation method thereof |
| CN106243862B (en) * | 2016-08-23 | 2018-08-21 | 中国科学院宁波材料技术与工程研究所 | Electric power pylon anti-corrosion primer, preparation method and application |
| CN107760147A (en) * | 2017-09-30 | 2018-03-06 | 浙江瀚镪自动化设备股份有限公司 | A kind of express box protective coating |
| CN110977345A (en) * | 2019-12-05 | 2020-04-10 | 北京东方计量测试研究所 | Dust hood, processing method, tin smoke purifier and electrostatic protection method of tin smoke purifier |
| CN115093735A (en) * | 2022-07-21 | 2022-09-23 | 安徽尚德轨道设备制造有限公司 | Cold spray multi-element alloy anticorrosive material and preparation method thereof |
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2001
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| CN1393488A (en) | 2003-01-29 |
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Owner name: BEIJING CHEMICAL ENGINEERING UNIV. Free format text: FORMER OWNER: WAN PINGYU Effective date: 20060317 |
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Effective date of registration: 20060317 Address after: 100029, No. 15 East Third Ring Road, Chaoyang District, Beijing Patentee after: Beijing University of Chemical Technology Address before: 100029 Department of Applied Chemistry, School of science, Beijing University of Chemical Technology, 15 North Third Ring Road East, Chaoyang District, Beijing Patentee before: Wan Pingyu |
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Granted publication date: 20041110 Termination date: 20100627 |