CN102344701A - Surface coating for non-oriented silicon steel and application of surface coating - Google Patents
Surface coating for non-oriented silicon steel and application of surface coating Download PDFInfo
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- CN102344701A CN102344701A CN2010102417995A CN201010241799A CN102344701A CN 102344701 A CN102344701 A CN 102344701A CN 2010102417995 A CN2010102417995 A CN 2010102417995A CN 201010241799 A CN201010241799 A CN 201010241799A CN 102344701 A CN102344701 A CN 102344701A
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Abstract
The invention discloses a surface coating for non-oriented silicon steel and application of the surface coating. The coating comprises the following chemical components in percentage by mass: 3 to 15 percent of glycol, 5 to 17 percent of boric acid, 5 to 25 percent of polyurethane-acrylate-ethylene oxide resin, 5 to 40 percent of aluminum dihydrogen phosphate, 2 to 10 percent of zinc acetate, 5 to 20 percent of colloidal silica and the balance of deionized water. By the novel environment-friendly insulation coating for the non-oriented silicon steel, the problem of environment pollution caused by chromium element is completely eliminated; moreover, the excellence of various properties of the coating such as uniformity, corrosion resistance, heat resistance, weldability, adhesiveness and the like can also be ensured.
Description
Technical field
The present invention relates to a kind of coating that is used for steel surface, make it form the anti-corrosion insulation coating.Be used for the silicon steel insulating coating preparing technical field.
Background technology
The non-oriented silicon steel insulating coating is to be coated in the insulating coating that the surperficial one deck of non orientating silicon steel is become to be grouped into by number of chemical.It can guarantee that non orientating silicon steel has higher surface resistivity, makes the interlayer power loss reduce to minimum; Protect non orientating silicon steel to avoid the erosion and the corrosion of various corrosive mediums simultaneously.Non orientating silicon steel surface insulation coating mainly includes organic coating, inorganic coating and half inorganic coating three major types, and total development trend is that organic coating is eliminated gradually, and inorganic coating will replace half inorganic coating gradually.But owing to receive the restriction of each side condition and the attribute of inorganic coating itself, using more at present still is half inorganic coating.
Patent US 484753 has proposed a kind of method that on non-oriented silicon steel sheet, forms one deck insulating coating.Mainly comprise vinyl resin, guanamine resin, chromic salt, emulsifying agent and dispersion agent in the prescription, form antiknock permeability good insulation coating.The formulation for coating material of insulating coating mainly comprises (methyl) Emulsion acrylic resin that contains unsaturated carboxylic acid on the non-oriented silicon steel sheet that patent US 483087 proposes, and adopts Powdered TEB 3K to improve the welding property of coating.Patent US 5624749 utilizes emulsion polymerisation process to prepare hud typed emulsion in addition, examines to be crosslinked hydrophobicity epoxy resin, and shell is the hydrophilic acrylic resin, and the insulating film that makes has the good comprehensive performance.
Day disclosure special permission communique clear 54243823 has been introduced a kind of phosphagel phosphaljel magnesium solution that on orientation free silicon steel plate, uses just can form the fabulous insulating coating of performance.The Al that this solution contains
3+, Mg
2+, H
2PO
4 -, concentration meets following scope (butt is by wt%): Al
3+(use Al
2O
3Calculate): Mg 3%～11%,
2+(calculating): H 3%～15%, with MgO
2PO
4-(use H
3PO
4Calculate): 78%～87%, three kinds of composition total weight percent are 100% (butt).Can also add colloidal state SiO in the phosphagel phosphaljel magnesium solution
2If, Al
3+, Mg
2+And H
2PO
4 -Concentration is respectively with Al
2O
3, MgO and H
3PO
4Wt% meter, (butt) can be regarded as 100 parts, the colloidal state SiO that then adds
2The content of (butt) can be 0～150 part, and these four kinds of material sums are 100% (butt), and moisture content must not be less than 45% in the formed solution.This solution can be coated onto on the electrical sheet (being with or not being with the glass undercoat) with any suitable ordinary method, then silicon steel sheet is carried out heat treated, makes solution dry, thereby obtains needed insulating glass film coating.To the not good problem of coating tack, the spy opens flat 4-110476, proposes in half organic masking liquid, to add a kind of chela and thing of titanium, after being coated in the electrical steel substrate surface and forming insulating film, can effectively improve tack and insulativity after stress relieving.Propose among the Te Kaiping 2-38582; Apply a kind of silicate earlier on the electrical steel surface; Carry out dry solidification and form the silicate underlying membrane, and then apply and contain chromic acid or phosphoric acid salt, after drying solidify to form the upper strata coating; And in two layers of coating liquid, be added with organic resin and silane coupling agent in one deck at least, final formation has the good electrical sheet of insulating coating adhesion property.This kind method need apply the baking secondary, and cost of manufacture is high, and production efficiency is low.
US 3793073 has introduced a kind of insulating coating that is used to apply electrical steel.The organic moiety of coating is by being selected from vinyl resin or multipolymer, one or more of Maleic Acid, Anhydrous, polyvinyl acetal, aminoresin, calcium lignosulfonate, resol, vinyl acetate, vinylchlorid and epoxy resin.Can add the organic granular material of granularity greater than 2 μ m, for example: resol, melamine resin wait provides surface irregularity, and obtaining good weldableness, the inorganic part of coating can comprise in phosphoric acid class material or the chromic acid class material one or more.
US 4496399 relate to a kind of inorganic/the organic phosphate insulating coating; This patent has been introduced a kind of aqueous compsn that is used to apply non orientating silicon steel; The inorganic part of compsn comprises 100 parts of phosphoric acid magnaliums or 33～250 parts of colloid silicas and 10～25 parts of chromic anhydrides, or a kind of pure aluminium silicate particulate of 30～250 parts.The organic moiety of compsn contains a kind of aqueous suspension solution of 15～1350 parts.Suspension-s contains a kind of vinylformic acid of 40～60wt% or the solid of vinyl acetate resin.
US 4844753 has introduced a kind of aqueous coating composition that is used for forming on the non orientating silicon steel insulating coating, and it has comprised a kind of inorganic chromium hydrochlorate film-forming components and a kind of resin Composition.Resin Composition is that a kind of vinylformic acid or vinylformic acid-styrene emulsion and granularity are the mixture of the melamine resin of 0.2～1 μ m.In inorganic/organic coating of US 4618377; The organic emulsion resin has carried out surface-treated organic resin particle with a kind of dispersion improving agent; With a kind of solution that contains at least a inorganic phosphate or chromic salt component, surface treated resin particle is used to control the surfaceness of solidified coating.Emulsion resin can be independent acrylic acid series, vinyl acetate, vinylbenzene, divinyl, or one or more multipolymers in vinyl acetate, vinylbenzene and the divinyl.Inorganic part can comprise the phosphoric acid salt of calcium, aluminium, magnesium and zinc or the chromic salt or the dichromate of calcium, magnesium, zinc or aluminium.
The inorganic components that adopts among the patent US 5945212 is phosphagel phosphaljel, calcium phosphate, zn phosphate and to add granularity be that the coarse grain resin emulsion of 0.3～3.0 μ m is as organic moiety.Amoca Corp comprises the phosphagel phosphaljel by 20～60 parts of per 100 parts of butt weight calculating, 20～70 parts at least a inorganic silicic acid salt particle and a kind of vinyl resin of 10～25 parts after in US 3994387 patents, having invented a kind of curing.The sour water suspension-s that forms this coating can comprise by weight a kind of water-miscible organic solvent of 1 part at the most to per 1 part of resin.The pH value of aqeous suspension is approximately 2～2.5, possibly be 0.3～60 μ m by one or more the silicate granules sizes formed in pure aluminium silicate, the Magnesium Silicate q-agent, and resin particle contains the unreacted phosphoric acid that is lower than about 0.5wt% less than 1 μ m.
Summary of the invention
The object of the present invention is to provide a kind of non orientating silicon steel topcoating, not only eliminated the environmental issue that the chromium element brings fully, but also improved each item performance such as tack, weldableness of coating.
In order to reach the foregoing invention purpose; The present invention provides a kind of novel environment friendly non-oriented silicon steel insulating coating that contains terepthaloyl moietie, boric acid and zinc acetate; Total mass in coating is the basis, and the weight percent of each component that contains in this non orientating silicon steel topcoating is:
Terepthaloyl moietie, 3～15%, preferred 4～11%;
Boric acid, 5～20%, preferred 7～13%;
Polyurethane-acrylate-ethylene oxide resin, 5～25%, preferred 8～15%;
Aluminium dihydrogen phosphate, 15～40%, preferred 25～35%;
Zinc acetate, 2～10%;
Colloid silica, 5～20%, preferred 11～15%;
Surplus is a deionized water, and the minimum content of water is 10%.
Polyurethane-acrylate-ethylene oxide resin that the present invention uses; Make by the oxyethane of the urethane of mass percent 20～50%, 25～50% propenoate and 10～30% polyreaction through routine; The molecular weight of gained polyurethane-acrylate-ethylene oxide resin is between 1000～20000; Their mean particle size should be between 0.2～2 μ m, and its pH value is between 2～5.In order to make the coating environmental protection and not contain the chromium element, aluminium dihydrogen phosphate has important effect to high temperature resistant, antidetonation, antistripping and the insulativity etc. that improve coating.The consumption of the aluminium dihydrogen phosphate that the present invention adopted accounts for 15～40% of coating total mass.
The adding of zinc acetate can make the outward appearance of coating change, if the amount that adds is few, then the outward appearance of coating is undesirable; If add-on is too much, then this coated film possibly peeled off after the thermal treatment that discharges stress.The add-on of the zinc acetate that the present invention adopted should account for 2～10% of coating total mass.
Colloid silica is that diameter is that nano level silicon-dioxide ultra-fine particles is dispersed in the oyster white colloidal solution in the water.Ion at the colloid silica particle surface is the hydration type, because of water molecules covers wetting ability is arranged.Colloid silica can improve associativity, wearability and stain resistance as the compounding ingredient of coating.In the aforementioned coating composition provided by the invention, the terepthaloyl moietie of use has played vital role to the erosion resistance of improving coating.It is tightr that the adding of terepthaloyl moietie makes that coating contacts with the silicon steel base plate, stoped base plate to make base plate be difficult for oxidation with contacting of air, makes the erosion resistance of coating strengthen.Its consumption should account for 3～15% of coating total mass.
The boric acid that the present invention uses plays important effect to the tack of improving coating.Its consumption should account for 5～20% of coating total mass.
The present invention also provides the preparation method of said non orientating silicon steel topcoating; Comprise the steps: polyurethane-acrylate-ethylene oxide resin, terepthaloyl moietie and deionized water are joined in the reaction vessel; Add aluminium dihydrogen phosphate, zinc acetate, colloid silica more respectively successively; Add boric acid at last, uniform mixing promptly gets.
Non-oriented silicon steel insulating coating of the present invention can be used as the non-oriented silicon steel insulating coating.
The present invention is through adding terepthaloyl moietie in coating, and the mutual synergy between components such as boric acid and zinc acetate, has improved the erosion resistance of coating greatly.In addition, non-oriented silicon steel insulating coating of the present invention has not only been eliminated the environmental issue that the chromium element brings fully; Surface of good resistivity can also be provided; Make the interlayer power loss reduce to minimum, good anti-water vapor receptivity is arranged, can provide and the surface of steel plate superior corrosion resistance; Make each item excellent propertys such as homogeneity, rotproofness, thermotolerance, weldableness of coating, reach the erosion resistance, tack and the anti-annealing property that are equal to the coating that contains chromium.
Embodiment
Further describe technical scheme of the present invention through specific embodiment below.Should be understood that these embodiment only to be used to the present invention is described and be not used in the restriction scope of the present invention.
The insulation compound that goes out by formulation as shown in table 1 is applied to not have and is orientated on the steel plate, under 650 ℃, carries out thermal treatment in 30 seconds, can obtain the silicon steel sheet that thickness is the insulating coating film of 1.5 μ m.
Concrete preparation process is following: the formula rate of pressing table 1; Polyurethane-acrylate-ethylene oxide resin, terepthaloyl moietie and the deionized water of respective amount are joined in the reaction vessel; The aluminium dihydrogen phosphate, magnesium isopropoxide, zinc acetate, the colloid silica that add respective amount more respectively successively; Add boric acid at last, stirring makes coating.
Each prescription of forming is as shown in table 1:
The composition of table 1 coating composition
(annotate: A is a terepthaloyl moietie, and B polyurethane-acrylate-ethylene oxide resin, C are aluminium dihydrogen phosphate, and D is a zinc acetate, and E is a colloid silica, and F is a boric acid.)
The various performances of table 2 coating that to be expressions obtain by the method for table 1.
The appearance of coat aesthetic feeling is represented with zero generally use ◇, aesthetic feeling is not represented with △.
Testing method to erosion resistance is: will apply the silicon steel sheet of filming and be divided into two groups; One group is held on indoor (90 days); One group is exposed to open air (90 days), the inspection insulating coating lip-deep situation of getting rusty, and the per-cent that accounts for the total area with rusty part area is not represented.
For the tack of coating, by its sticking power of " assay method of coating adhesion " GB/T 2522-2007 test, wherein A representes that nothing comes off, and B representes to have slightly to come off, and C representes to come off.
Weldability is well represented with zero, generally uses ◇, and difference is represented with △.
The comparison of table 2 coating performance
Can learn that from table 2 under the condition of embodiment 1-12, the characteristic of coating such as aesthetic feeling, insulation strength, erosion resistance, coating tack and weldability are all excellent.
Embodiment 1 compares with Comparative Examples 5, owing to increased ethylene glycol component, makes the erosion resistance of coating improve greatly; Comparative Examples 1 is compared with embodiment 1, and terepthaloyl moietie content is on the low side, and it is relatively poor that the tack of coating is compared embodiment 1.In the Comparative Examples 3, terepthaloyl moietie too high levels, its insulation strength, tack and weldableness all can not be satisfactory.And in other Comparative Examples, the performance of film is affected because of other content is undesirable.
Claims (10)
1. non orientating silicon steel topcoating is the basis in the total mass of coating, and the weight percent of each component that contains in this non orientating silicon steel topcoating is:
Terepthaloyl moietie 3～15%;
Boric acid 5～17%;
Polyurethane-acrylate-ethylene oxide resin 5～25%;
Aluminium dihydrogen phosphate 15～40%;
Zinc acetate 2～10%;
Colloid silica 5～20%;
Surplus is a deionized water.
2. the non orientating silicon steel topcoating described in claim 1 is characterized in that, is the basis in the total mass of coating, and the mass percent of said terepthaloyl moietie is 4～11%.
3. the non orientating silicon steel topcoating described in claim 1 is characterized in that, is the basis in the total mass of coating, and the mass percent of said boric acid is 7～13%.
4. the non orientating silicon steel topcoating described in claim 1 is characterized in that, is the basis in the total mass of coating, and the mass percent of said polyurethane-acrylate-ethylene oxide resin is 8～15%.
5. the non orientating silicon steel topcoating described in claim 1 is characterized in that, is the basis in the total mass of coating, and the mass percent of said aluminium dihydrogen phosphate is 25～35%.
6. the non orientating silicon steel topcoating described in claim 1 is characterized in that, is the basis in the total mass of coating, and the mass percent of said colloid silica is 11～15%.
7. like the said non orientating silicon steel topcoating of arbitrary claim in the claim 1～6; It is characterized in that said polyurethane-acrylate-ethylene oxide resin is to be made through polyreaction by the urethane of mass percent 20～50%, 25～50% propenoate and 10～30% oxyethane.
8. like the said non orientating silicon steel topcoating of arbitrary claim in the claim 1～6, it is characterized in that the molecular weight of said polyurethane-acrylate-ethylene oxide resin is between 1000～20000.
9. like the said non orientating silicon steel topcoating of arbitrary claim in the claim 1～6, it is characterized in that the mean particle size of said polyurethane-acrylate-ethylene oxide resin is between 0.2～2 μ m.
10. be used to prepare the non-oriented silicon steel insulating coating like the said non orientating silicon steel topcoating of arbitrary claim among the claim 1-9.
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| CN102344701B CN102344701B (en) | 2013-08-07 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105647307A (en) * | 2016-03-04 | 2016-06-08 | 芜湖市金宇石化设备有限公司 | Method for preparing loading arm coating treatment agents |
| CN106752130A (en) * | 2016-12-01 | 2017-05-31 | 上海迪升防腐新材料科技有限公司 | A kind of orientation silicon steel preparation and application of environment friendly insulating coating solution |
| CN111592780A (en) * | 2020-06-08 | 2020-08-28 | 青岛浩普凯诚环保新材料有限公司 | High-speed train shell protection liquid and preparation method thereof |
| CN115746699A (en) * | 2022-11-24 | 2023-03-07 | 杭州之江有机硅化工有限公司 | Transparent organic silicon coating adhesive composition and preparation method and application thereof |
| CN116063868A (en) * | 2023-01-19 | 2023-05-05 | 武汉科技大学 | Environment-friendly insulating paint and coating for improving insulating property of non-oriented silicon steel and coating process thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1004679A1 (en) * | 1998-11-23 | 2000-05-31 | Nippon Steel Corporation | Non-oriented electromagnetic steel sheet having insulating film excellent in film properties, method for producing same, and insulating film-forming agent used for producing the same |
| WO2001068788A1 (en) * | 2000-03-15 | 2001-09-20 | Oosaki Corporation | Soil improving agent including soil hardening agent and ground improving agent, soil improving method including soil hardening method and ground improving method, and improved ground |
| CN1322226A (en) * | 1998-11-10 | 2001-11-14 | 艾尔阻燃有限公司 | Composition for fire-protection coating |
| CN101486866A (en) * | 2009-02-20 | 2009-07-22 | 南京大学 | High temperature resistant annealing treated single-component chromium-free water-based silicon steel sheet insulating coating solution |
| CN101643625A (en) * | 2009-08-28 | 2010-02-10 | 上海迪升防腐新材料科技有限公司 | Insulating paint of semi-inorganic environmental non-oriented silicon steel insulating paint and application thereof |
-
2010
- 2010-07-30 CN CN 201010241799 patent/CN102344701B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1322226A (en) * | 1998-11-10 | 2001-11-14 | 艾尔阻燃有限公司 | Composition for fire-protection coating |
| EP1004679A1 (en) * | 1998-11-23 | 2000-05-31 | Nippon Steel Corporation | Non-oriented electromagnetic steel sheet having insulating film excellent in film properties, method for producing same, and insulating film-forming agent used for producing the same |
| WO2001068788A1 (en) * | 2000-03-15 | 2001-09-20 | Oosaki Corporation | Soil improving agent including soil hardening agent and ground improving agent, soil improving method including soil hardening method and ground improving method, and improved ground |
| CN101486866A (en) * | 2009-02-20 | 2009-07-22 | 南京大学 | High temperature resistant annealing treated single-component chromium-free water-based silicon steel sheet insulating coating solution |
| CN101643625A (en) * | 2009-08-28 | 2010-02-10 | 上海迪升防腐新材料科技有限公司 | Insulating paint of semi-inorganic environmental non-oriented silicon steel insulating paint and application thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105647307A (en) * | 2016-03-04 | 2016-06-08 | 芜湖市金宇石化设备有限公司 | Method for preparing loading arm coating treatment agents |
| CN106752130A (en) * | 2016-12-01 | 2017-05-31 | 上海迪升防腐新材料科技有限公司 | A kind of orientation silicon steel preparation and application of environment friendly insulating coating solution |
| CN106752130B (en) * | 2016-12-01 | 2019-01-01 | 上海迪升防腐新材料科技有限公司 | A kind of preparation and application of orientation silicon steel environment friendly insulating coating solution |
| CN111592780A (en) * | 2020-06-08 | 2020-08-28 | 青岛浩普凯诚环保新材料有限公司 | High-speed train shell protection liquid and preparation method thereof |
| CN115746699A (en) * | 2022-11-24 | 2023-03-07 | 杭州之江有机硅化工有限公司 | Transparent organic silicon coating adhesive composition and preparation method and application thereof |
| CN115746699B (en) * | 2022-11-24 | 2023-10-31 | 杭州之江有机硅化工有限公司 | Transparent organic silicon coating adhesive composition and preparation method and application thereof |
| CN116063868A (en) * | 2023-01-19 | 2023-05-05 | 武汉科技大学 | Environment-friendly insulating paint and coating for improving insulating property of non-oriented silicon steel and coating process thereof |
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| CN102344701B (en) | 2013-08-07 |
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