CN103468034B - A kind of In Situ Compatibilization is polymerized the preparation method of half inorganic styrene-acrylic silicon steel insulating coating - Google Patents
A kind of In Situ Compatibilization is polymerized the preparation method of half inorganic styrene-acrylic silicon steel insulating coating Download PDFInfo
- Publication number
- CN103468034B CN103468034B CN201310407837.3A CN201310407837A CN103468034B CN 103468034 B CN103468034 B CN 103468034B CN 201310407837 A CN201310407837 A CN 201310407837A CN 103468034 B CN103468034 B CN 103468034B
- Authority
- CN
- China
- Prior art keywords
- parts
- coating
- coupling agent
- inorganic
- stir
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Chemical Treatment Of Metals (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The present invention relates to the preparation method that a kind of In Situ Compatibilization is polymerized half inorganic styrene-acrylic silicon steel insulating coating, coating composition and mass fraction are: dihydrogen phosphate 100 ~ 200, Nano-meter SiO_2
20.5 ~ 2, deionized water 800 ~ 1000, acrylate 20 ~ 50, vinylformic acid 5 ~ 10, vinylbenzene 20 ~ 45, emulsifying agent 1 ~ 5, polyvinyl alcohol 0 ~ 2, initiator 0.5 ~ 2.5, sodium bicarbonate, 0.5 ~ 2.5, coupling agent 0.5 ~ 2, glycerol 10 ~ 15; The present invention directly adopts biphosphate salt brine solution to be inorganic component, carries out the emulsion polymerization of cinnamic acrylic ester wherein, prepares electric steel insulating paint.This invention ensures that consistency good between inorganic component and organic emulsion, improve the stability of coating, not containing harmful element, coating has good over-all properties simultaneously.
Description
Technical field
The present invention relates to a kind of method that the inorganic styrene-acrylic silicon steel insulating coating of environment-friendly type half is prepared in In Situ Compatibilization letex polymerization, belong to electrical steel steel insulation compound preparing technical field.
Background technology
Silicon steel, i.e. electrical steel, have excellent electromagnetic performance, can be used for manufacturing electric motor, generator, transformer and ballast iron core, is a kind of important Metallic Functional Materials.In order to reduce its eddy-current loss in application process, need at surface-coated one deck insulating coating, to improve its electromagnetic performance.This coating needs to possess good insulativity and higher interlamination resistance and good punching, tack, thermotolerance, erosion resistance, rust-preventing characteristic etc.At present, electrical steel insulating coating mainly contains inorganic coating, organic coating and half inorganic coating three major types.Organic coating has the advantages such as film forming properties is good, punching processing characteristics is superior, but organic coating is general thicker, and weldability is poor, and iron core overlapping coefficient is low, and coating heat-shrinkable is large, and dimensional stability is poor.And the interlamination resistance of organic coating can reduce gradually with operation.Inorganic coating has excellent thermotolerance, insulativity and weldability, but there is the shortcoming of punching processibility and tack difference.Half inorganic coating refers to organic constituent to join in inorganic paint and is uniformly dispersed, and in order to improve punching processibility and the sticking power of inorganic coating, meanwhile, obtains good weldability and thermotolerance by the content controlling organic constituent.Therefore, current paint for electrical steel major part adopts organic constituent and the composite modified mode of inorganic component, the electrical steel that preparation over-all properties is superior.Conventional organic constituent is generally acrylic resin, vinyl acetate resin, modified alkyd resin and epoxy resin etc.; Conventional inorganic component is generally phosphoric acid salt, chromic salt and silicate etc.Due to the physical aspect of organic constituent and inorganic component and chemical property difference comparatively large, organic constituent is difficult to evenly spread in inorganic component, and poor compatibility produces excessive efflorescence in lamination punching course, causes the accumulation of coating on equipment.On the other hand, the resin organic resin poor heat resistance of enrichment, produces carbonization phenomenon in heating anneal treating processes, reduces the insulativity of coating.A large amount of employing, containing chromic salts class, causes grave danger to the healthy of direct labor and environment protection.
United States Patent (USP) (US5955201.1999) reports the inorganic chrome-free insulating coating of a kind of environment-friendly type half for non-oriented electrical steel, this coating is formed by a kind of sour water suspension, comprises the monoaluminum phosphate of 20 ~ 60 parts, at least one inorganic silicate particulate of 20 ~ 70 parts, the acrylic resin of 10 ~ 25 parts and suitable water-miscible organic solvent.Have that resistance to chalking, tack are good, interlamination resistance rate advantages of higher.But because mineral filler particle diameter does not reach below 100nm, after stress relieving, coating there will be dry linting and obscission.Chinese patent (CN1887987A) reports a kind of heat cured water polyvinyl acetate emulsion for cold rolled electrical steel dope and preparation method thereof, each quality component ratio is, water-based aqueous polyvinyl acetate emulsion: inorganic solution: linking agent=(40 ~ 45): (45 ~ 50): (10 ~ 12).The coating that obtained insulation compound is formed has good punching, when 300 times/min speed punching, life cycle reaches more than 1,500,000 times, but polyvinyl acetate (PVA) exists the problem of poor heat resistance, darken 150 DEG C time, can occur when 225 DEG C to decompose and release acetic acid.
So wish now a kind of environment-friendly type semi-inorganic insulation coating for cold rolling non-oriented electrical steel of preparation.This coating can provide good surface resistivity, interlayer power loss is down to minimum, the tack excellent with surface of steel plate can be provided, the die wear caused in the process from steel plate punching lamination is minimum, do not produce excessive efflorescence at lamination punching course or on pressing equipment, do not cause the accumulation of coating, can be met with stresses annealing and carbon drop process, and do not produce too much weld blowhole, can with the various pharmaceutical chemicals used during manufacture iron core and resin compatible.Further, not containing solubility sexavalent chrome or chromic salt.
Summary of the invention
For with first inorganic electrical steel inorganic component and the poor defect of organic constituent consistency, order of the present invention is to propose a kind of method that half inorganic electric steel insulating paint is prepared in In Situ Compatibilization letex polymerization.With conventional inorganic component and the direct mixed phase ratio of organic constituent, the present invention directly with biphosphate salt brine solution for dispersion medium, the reaction of Polystyrene-acrylate in-situ emulsion polymerization is carried out in phosphate dihydrogen salt solution, prepare non-oriented electrical steel environment-friendly type semi-inorganic insulation coating, improve organic constituent in conventional physical mixing process and be difficult to homodisperse problem, and good surface resistivity can be provided, interlayer power loss is down to minimum.
The present invention is achieved by the following technical solutions:
In Situ Compatibilization is polymerized a preparation method for half inorganic styrene-acrylic silicon steel insulating coating, it is characterized in that, the component of described insulation compound and mass fraction are:
Described dihydrogen phosphate is one or more in SODIUM PHOSPHATE, MONOBASIC, potassium primary phosphate, aluminium dihydrogen phosphate, primary magnesium phosphate,
Described Nano-meter SiO_2
2, purity is 99.5%, and median size is 15 ± 5nm, and pH value is 5 ~ 7, and crystalline form is ball-like structure, white solid powder,
Described acrylate monomer is the one in β-dimethyl-aminoethylmethacrylate, butyl methacrylate, methyl acrylate, ethyl propenoate, butyl acrylate,
Described vinylformic acid, chemical pure, density is 1.051g/cm
3, colourless transparent oil liquid,
Described vinylbenzene, chemical pure, density is 0.906g/cm
3, colourless liquid,
Described emulsifying agent is one or more in sodium lauryl sulphate, sodium laurylsulfonate, Sodium dodecylbenzene sulfonate, OP-10, tween-80,
Described OP-10, commercially available, consist of the condenses of alkylphenol and oxyethane, outward appearance is colourless to pale yellow transparent thick liquid, and producer is Aladdin reagent company limited,
Described tween-80, commercially available, chemical composition is polyoxyethylene sorbitan fatty acid ester, and outward appearance is faint yellow extremely orange-yellow thick liquid, and producer is Chemical Reagent Co., Ltd., Sinopharm Group,
The described polyvinyl alcohol trade mark is 1788,1799, one or more in 2088.
Described initiator is one or more in Potassium Persulphate or ammonium persulphate,
Described sodium bicarbonate is the aqueous solution of 10% massfraction, as buffer reagent, and the pH of buffering polymerization system,
Described coupling agent is one or more in silane coupling agent, titanate coupling agent, phosphoric acid ester coupling agent,
Described glycerol, chemical pure, density 1.261g/cm
3, achromatism and clarity thick liquid;
The step of the preparation method of described insulation compound is as follows:
1) 100 ~ 200 parts of dihydrogen phosphates, 0.5 ~ 2 part of Nano-meter SiO_2 are weighed
2powder, 800 ~ 1000 parts of deionized waters, add there-necked flask, carries out ultrasonic disperse 1h obtain dispersion liquid by ultrasonic wave;
2) weigh 20 ~ 50 parts of acrylate, 5 ~ 10 parts of vinylformic acid, 20 ~ 45 parts of vinylbenzene, 1 ~ 5 part of emulsifying agent and 0 ~ 2 part of polyvinyl alcohol, add in above-mentioned dispersion liquid, stir;
3) by step 2) system of gained vacuumizes, logical nitrogen protection, and stir, oil bath heats to 80 DEG C, drips 0.5 ~ 2.5 part of initiator and 0.5 ~ 2.5 part of sodium bicarbonate, polyreaction 3 ~ 5h;
4) system of step 3) gained is warmed up to 85 DEG C, is incubated 1 hour; Be cooled to 40 DEG C again, add 0.5 ~ 2 part of coupling agent, 10 ~ 15 parts of glycerol, stir 0.5 ~ 1h, be down to 25 ~ 30, use 320 order screen filtration dischargings, obtain described insulation compound.
Beneficial effect
The present invention has following gain effect:
1, the present invention adopts biphosphate salt brine solution to be that dispersion medium carries out in-situ emulsion polymerization, and the composite emulsion good stability of preparation, the consistency between inorganic component and organic emulsion is good.The insulation compound shelf lives is long, can place more than 6 months.
2, the present invention uses inorganic salt solution to replace solid inorganic filler.After coating solidification, form the glossiness dense film of one deck silvery white on the surface of electrical steel.The electrical steel applying this insulating coating not easily produces assorted slag when welding, little to mould loss during punch die.
3, the insulating coating that prepared by the present invention has good over-all properties, and does not limit use harmful element containing European Union ROHS instruction.
Concrete enforcement embodiment
Below in conjunction with example, the present invention will be further described.
Embodiment 1
Weigh 100 parts of aluminium dihydrogen phosphates, 0.5 part of Nano-meter SiO_2
2powder, 1000 parts of deionized waters, add there-necked flask, carry out ultrasonic disperse 1h by ultrasonic wave; Weigh 50 parts of butyl acrylates, 5 parts of vinylformic acid, 45 parts of vinylbenzene, 2.5 parts of Sodium dodecylbenzene sulfonatees and 2 parts of polyvinyl alcohol, add in above-mentioned dispersion liquid, stir; System vacuumizes, logical nitrogen protection, and stir, oil bath heats to 80 DEG C, drips 0.5 part of ammonium persulphate and 0.5 part of sodium bicarbonate, polyreaction 3h; System is warmed up to 85 DEG C, is incubated 1 hour; Be cooled to 40 DEG C again, add 0.5 part of silane coupling agent, 10 parts of glycerol, stir 0.5h, be down to room temperature, use 320 order screen filtration dischargings.
By the insulation compound roller coat for preparing on treated non-oriented electrical steel sheet, 500 DEG C of 40 seconds thermofixation film forming in retort furnace.
Insulation compound Absorbable organic halogens stores 6 months (10 ~ 30 DEG C, shady and cool place preserves).Insulating coating outward appearance is good; Tack is A level (according to GB/T2522-1998); Interlamination resistance is 800 Ω mm
2/ sheet (according to GB/T2522-2007).
Embodiment 2
Weigh 50 parts of aluminium dihydrogen phosphates, 50 parts of primary magnesium phosphates, 0.5 part of Nano-meter SiO_2
2powder, 1000 parts of deionized waters, add there-necked flask, carry out ultrasonic disperse 1h by ultrasonic wave; Weigh 50 parts of butyl acrylates, 5 parts of vinylformic acid, 45 parts of vinylbenzene, 2.5 parts of Sodium dodecylbenzene sulfonatees and 2 parts of polyvinyl alcohol, add in above-mentioned dispersion liquid, stir; System vacuumizes, logical nitrogen protection, and stir, oil bath heats to 80 DEG C, drips 0.5 part of ammonium persulphate and 0.5 part of sodium bicarbonate, polyreaction 3h; System is warmed up to 85 DEG C, is incubated 1 hour; Be cooled to 40 DEG C again, add 0.5 part of silane coupling agent, 10 parts of glycerol, stir 0.5h, be down to room temperature, use 320 order screen filtration dischargings.
By the insulation compound roller coat for preparing on treated non-oriented electrical steel sheet, 500 DEG C of 40 seconds thermofixation film forming in retort furnace.
Insulation compound Absorbable organic halogens stores 6 months (10 ~ 30 DEG C, shady and cool place preserves).Insulating coating outward appearance is good; Tack is A level (according to GB/T2522-1998); Interlamination resistance is 650 Ω mm
2/ sheet (according to GB/T2522-2007).
Embodiment 3
Weigh 100 parts of aluminium dihydrogen phosphates, 2 parts of Nano-meter SiO_2
2powder, 1000 parts of deionized waters, add there-necked flask, carry out ultrasonic disperse 1h by ultrasonic wave; Weigh 50 parts of butyl acrylates, 5 parts of vinylformic acid, 45 parts of vinylbenzene, 2.5 parts of Sodium dodecylbenzene sulfonatees and 2 parts of polyvinyl alcohol, add in above-mentioned dispersion liquid, stir; System vacuumizes, logical nitrogen protection, and stir, oil bath heats to 80 DEG C, drips 0.5 part of ammonium persulphate and 0.5 part of sodium bicarbonate, polyreaction 3h; System is warmed up to 85 DEG C, is incubated 1 hour; Be cooled to 40 DEG C again, add 0.5 part of silane coupling agent, 10 parts of glycerol, stir 0.5h, be down to room temperature, use 320 order screen filtration dischargings.
By the insulation compound roller coat for preparing on treated non-oriented electrical steel sheet, 500 DEG C of 40 seconds thermofixation film forming in retort furnace.
Insulation compound Absorbable organic halogens stores 6 months (10 ~ 30 DEG C, shady and cool place preserves).Insulating coating outward appearance is good; Tack is A level (according to GB/T2522-1998); Interlamination resistance is 750 Ω mm
2/ sheet (according to GB/T2522-2007).
Embodiment 4
Weigh 100 parts of primary magnesium phosphates, 0.5 part of Nano-meter SiO_2
2powder, 1000 parts of deionized waters, add there-necked flask, carry out ultrasonic disperse 1h by ultrasonic wave; Weigh 25 parts of butyl acrylates, 25 parts of ethyl propenoates, 5 parts of vinylformic acid, 45 parts of vinylbenzene, 2.5 parts of Sodium dodecylbenzene sulfonatees and 2 parts of polyvinyl alcohol, add in above-mentioned dispersion liquid, stir; System vacuumizes, logical nitrogen protection, and stir, oil bath heats to 80 DEG C, drips 0.5 part of ammonium persulphate and 0.5 part of sodium bicarbonate, polyreaction 3h; System is warmed up to 85 DEG C, is incubated 1 hour; Be cooled to 40 DEG C again, add 0.5 part of silane coupling agent, 10 parts of glycerol, stir 0.5h, be down to room temperature, use 320 order screen filtration dischargings.
By the insulation compound roller coat for preparing on treated non-oriented electrical steel sheet, 500 DEG C of 40 seconds thermofixation film forming in retort furnace.
Insulation compound Absorbable organic halogens stores 6 months (10 ~ 30 DEG C, shady and cool place preserves).Insulating coating outward appearance is good; Tack is A level (according to GB/T2522-1998); Interlamination resistance is 800 Ω mm
2/ sheet (according to GB/T2522-2007).
Embodiment 5
Weigh 100 parts of aluminium dihydrogen phosphates, 0.5 part of Nano-meter SiO_2
2powder, 1000 parts of deionized waters, add there-necked flask, carry out ultrasonic disperse 1h by ultrasonic wave; Weigh 50 parts of butyl acrylates, 5 parts of vinylformic acid, 45 parts of vinylbenzene, 2.5 parts of Sodium dodecylbenzene sulfonatees and 2 parts of polyvinyl alcohol, add in above-mentioned dispersion liquid, stir; System vacuumizes, logical nitrogen protection, and stir, oil bath heats to 80 DEG C, drips 0.5 part of ammonium persulphate and 0.5 part of sodium bicarbonate, polyreaction 3h; System is warmed up to 85 DEG C, is incubated 1 hour; Be cooled to 40 DEG C again, add 2 parts of silane coupling agents, 15 parts of glycerol, stir 0.5h, be down to room temperature, use 320 order screen filtration dischargings.
By the insulation compound roller coat for preparing on treated non-oriented electrical steel sheet, 500 DEG C of 40 seconds thermofixation film forming in retort furnace.
Insulation compound Absorbable organic halogens stores 6 months (10 ~ 30 DEG C, shady and cool place preserves).Insulating coating outward appearance is good; Tack is A level (according to GB/T2522-1998); Interlamination resistance is 800 Ω mm
2/ sheet (according to GB/T2522-2007).
By test, in above-described embodiment, insulating coating all meets following performance.
Thermotolerance: at 100%N
2under gas shield through 750 DEG C of annealing insulations after 2 hours coating without coming off, dry linting phenomenon (according to GB/T13501-92); Solidity to corrosion: test temperature is 35 ± 2 DEG C, concentration is the NaCl aqueous solution brine spray 8 hours of 5 ± 0.5%wt, and non-corroding comes off; Freon resistant: to be soaked in R22+ ester class refrigerator oil 240 as a child without weightlessness; To be soaked in 134a+ ester class refrigerator oil 240 hours without weightlessness (according to GB/T1739-1997); Punching: punching when burr height is 50 μm can reach 1,500,000 (punch dies: 10mm; Die Gap: 0.6mm); Weldability: < 20%cmmin
-1(do not produce maximum welding speed during bubble; Argon arc welding; Electrode: TH-W2.6mm).
From each embodiment result, In Situ Compatibilization prepared by the present invention is polymerized half inorganic styrene-acrylic electric steel insulating paint, its coating can provide good surface resistivity, interlayer power loss is down to minimum, the tack excellent with surface of steel plate can be provided, do not produce excessive efflorescence at lamination punching course or on pressing equipment, do not cause the accumulation of coating, can meet with stresses annealing and carbon drop process, and not containing solubility sexavalent chrome or chromic salt.
Claims (1)
1. In Situ Compatibilization is polymerized a preparation method for half inorganic styrene-acrylic silicon steel insulating coating, it is characterized in that, the component of described insulation compound and mass fraction are:
Described dihydrogen phosphate is one or more in SODIUM PHOSPHATE, MONOBASIC, potassium primary phosphate, aluminium dihydrogen phosphate, primary magnesium phosphate,
Described Nano-meter SiO_2
2, purity is 99.5%, and median size is 15 ± 5nm, and pH value is 5 ~ 7, and crystalline form is ball-like structure, white solid powder,
Described acrylate monomer is be selected from the one in β-dimethyl-aminoethylmethacrylate, butyl methacrylate, methyl acrylate, ethyl propenoate, butyl acrylate,
Described vinylformic acid, chemical pure, density is 1.051g/cm
3, colourless transparent oil liquid,
Described vinylbenzene, chemical pure, density is 0.906g/cm
3, colourless liquid,
Described emulsifying agent is one or more in sodium lauryl sulphate, sodium laurylsulfonate, Sodium dodecylbenzene sulfonate, OP-10, tween-80,
Described initiator is one or both in Potassium Persulphate or ammonium persulphate,
Described sodium bicarbonate is the aqueous solution of 10% massfraction,
Described coupling agent is one or more in silane coupling agent, titanate coupling agent, phosphoric acid ester coupling agent,
Described glycerol, chemical pure, density 1.261g/cm
3, achromatism and clarity thick liquid;
The step of the preparation method of described insulation compound is as follows:
1) 100 ~ 200 parts of dihydrogen phosphates, 0.5 ~ 2 part of Nano-meter SiO_2 are weighed
2powder, 800 ~ 1000 parts of deionized waters, add there-necked flask, carries out ultrasonic disperse 1h obtain dispersion liquid by ultrasonic wave;
2) weigh 20 ~ 50 parts of acrylate, 5 ~ 10 parts of vinylformic acid, 20 ~ 45 parts of vinylbenzene, 1 ~ 5 part of emulsifying agent and 0 ~ 2 part of polyvinyl alcohol, add in above-mentioned dispersion liquid, stir;
3) by step 2) system of gained vacuumizes, logical nitrogen protection, and stir, oil bath heats to 80 DEG C, drips 0.5 ~ 2.5 part of initiator and 0.5 ~ 2.5 part of sodium bicarbonate, polyreaction 3 ~ 5h;
4) by step 3) system of gained is warmed up to 85 DEG C, is incubated 1 hour; Be cooled to 40 DEG C again, add 0.5 ~ 2 part of coupling agent, 10 ~ 15 parts of glycerol, stir 0.5 ~ 1h, be down to 25 ~ 30 DEG C, use 320 order screen filtration dischargings, obtain described insulation compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310407837.3A CN103468034B (en) | 2013-09-09 | 2013-09-09 | A kind of In Situ Compatibilization is polymerized the preparation method of half inorganic styrene-acrylic silicon steel insulating coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310407837.3A CN103468034B (en) | 2013-09-09 | 2013-09-09 | A kind of In Situ Compatibilization is polymerized the preparation method of half inorganic styrene-acrylic silicon steel insulating coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103468034A CN103468034A (en) | 2013-12-25 |
| CN103468034B true CN103468034B (en) | 2015-10-28 |
Family
ID=49793086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310407837.3A Expired - Fee Related CN103468034B (en) | 2013-09-09 | 2013-09-09 | A kind of In Situ Compatibilization is polymerized the preparation method of half inorganic styrene-acrylic silicon steel insulating coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103468034B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106497274B (en) * | 2016-11-03 | 2018-11-20 | 马鞍山钢铁股份有限公司 | Silicon steel insulating coating, preparation method and its application method |
| CN107815155A (en) * | 2017-11-13 | 2018-03-20 | 吴花 | A kind of thin-film material coating and preparation method, application |
| CN108624153A (en) * | 2018-06-07 | 2018-10-09 | 和县华顺铸造有限公司 | A kind of coatings and preparation method thereof for electrical equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5955201A (en) * | 1997-12-19 | 1999-09-21 | Armco Inc. | Inorganic/organic insulating coating for nonoriented electrical steel |
| 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 |
| CN102477235A (en) * | 2010-11-29 | 2012-05-30 | 攀钢集团钢铁钒钛股份有限公司 | Chromium-free insulating coating, electrical sheet material and preparation method thereof |
| KR20120093735A (en) * | 2011-02-15 | 2012-08-23 | 현대하이스코 주식회사 | Organic/inorganic complex emulsion resin with excellent heat resistance and corrosion resistance, method of manufacturing the organic/inorganic complex emulsion resin and coating agent for insulation using the organic/inorganic complex emulsion resin |
-
2013
- 2013-09-09 CN CN201310407837.3A patent/CN103468034B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5955201A (en) * | 1997-12-19 | 1999-09-21 | Armco Inc. | Inorganic/organic insulating coating for nonoriented electrical steel |
| 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 |
| CN102477235A (en) * | 2010-11-29 | 2012-05-30 | 攀钢集团钢铁钒钛股份有限公司 | Chromium-free insulating coating, electrical sheet material and preparation method thereof |
| KR20120093735A (en) * | 2011-02-15 | 2012-08-23 | 현대하이스코 주식회사 | Organic/inorganic complex emulsion resin with excellent heat resistance and corrosion resistance, method of manufacturing the organic/inorganic complex emulsion resin and coating agent for insulation using the organic/inorganic complex emulsion resin |
Non-Patent Citations (1)
| Title |
|---|
| SiO2改性热交联型丙烯酸酯乳液的合成及性能;李永超等;《太原理工大学学报》;20130515;第44卷(第3期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103468034A (en) | 2013-12-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101591495B (en) | Non-oriented electrical steel chromium-free insulating environment-friendly coating and preparation method of coat thereof | |
| CN103706757A (en) | Magnesium alloy evaporative pattern casting coating and preparation method thereof | |
| CN103695743B (en) | A kind of magnesium alloy and preparation method thereof | |
| CN103468034B (en) | A kind of In Situ Compatibilization is polymerized the preparation method of half inorganic styrene-acrylic silicon steel insulating coating | |
| CN102760508B (en) | High-conductivity creep-resistant aluminium alloy cable conductor containing Hf and Ce and preparation method thereof | |
| CN103146962B (en) | Body of a motor car high-perforance compression casting aluminium alloy and preparation method thereof | |
| CN101532861A (en) | A method for manufacturing water meter housing by high strength cast aluminum alloy and a product thereof | |
| CN101659799A (en) | Electric steel insulating paint, and preparation method and coating method thereof | |
| CN109354957B (en) | Water-based paint for power equipment and preparation method thereof | |
| CN103774070B (en) | The strong magnesium alloy plate material, preparation method of a kind of Mg-Zn-Al-Cu system superelevation | |
| CN104928507A (en) | Aluminothermic reduction method for preparing aluminum-scandium master alloy in mixed molten salt system | |
| CN104109781A (en) | Aluminum alloy, micro channel aluminum flat tube, preparation method of micro channel aluminum flat tube, heat exchanger and electric appliance | |
| Liu et al. | Enhancing corrosion resistance of Al-Cu/AZ31 composites synthesized by a laser cladding and FSP hybrid method | |
| CN104357768A (en) | Boron carbide-aluminum alloy composite material board and preparation method thereof | |
| CN106086534A (en) | A kind of aluminum carbon copper alloy earthing material of high-strength corrosion-resisting | |
| CN103695744B (en) | A kind of nano-particle reinforcement magnesium alloy and preparation method thereof | |
| CN108441851A (en) | A kind of enhanced corrosion-resistant passivator | |
| CN105014050A (en) | Paint used for cast-infiltration of chromic-oxide-containing aluminium alloy and method for preparing cast-infiltration coating through paint | |
| CN103088347B (en) | Aluminum alloy sacrificial anode material for storage tank coil and preparation method thereof | |
| CN106588049B (en) | Silicon-free carbon-free corundum nozzle stopper rod product for continuous casting and preparation process thereof | |
| CN104801661A (en) | Preparation method for water-based paint for hydraulic part casting | |
| CN106756574A (en) | A kind of additive and its application method that its decay resistance is improved for Fe Mn high damping alloys | |
| CN104293008A (en) | Preparation method of environment-friendly semi-organic insulating coating for high silicon steel | |
| CN105385198B (en) | A kind of water base exfoliated casting magnesium aluminum alloy coating and preparation method thereof | |
| CN103695745A (en) | Boron nitride enhanced magnesium alloy and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 Termination date: 20190909 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |