CN1887987A - Heat cured water paint of polyvinyl acetate emulsion for cold rolled silicon steel and its prepn - Google Patents
Heat cured water paint of polyvinyl acetate emulsion for cold rolled silicon steel and its prepn Download PDFInfo
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- CN1887987A CN1887987A CN 200610086071 CN200610086071A CN1887987A CN 1887987 A CN1887987 A CN 1887987A CN 200610086071 CN200610086071 CN 200610086071 CN 200610086071 A CN200610086071 A CN 200610086071A CN 1887987 A CN1887987 A CN 1887987A
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Abstract
The present invention is heat cured water paint of polyvinyl acetate emulsion for cold rolled silicon steel and its preparation process. It is prepared with water thinned polyvinyl acetate emulsion, inorganic solvent and crosslinking agent in the weight ratio of 40-45 to 45-50 to 10-12. The preparation process includes the following steps: preparing water thinned polyvinyl acetate emulsion; preparing inorganic solvent; and mixing water thinned polyvinyl acetate emulsion, inorganic solvent and crosslinking agent. The present invention has the advantages of excellent affinity and compatibility between the inorganic solution and the organic emulsion, excellent filming performance and comprehensive performance, etc.
Description
Technical field:
That the present invention relates to is a kind of nano-scale water thermofixation paint of polyvinyl acetate emulsion for cold rolled silicon steel and preparation method, belongs to the silicon steel insulating coating preparing technical field.
Background technology:
Up to the present forming the technology of one deck insulation and rustproof layer and formulation for coating material on non-oriented silicon steel sheet has had manyly, and at present domestic each siliconized plate manufacturer is most to adopt to introduce from Japan and contain chromic salts prescription composite coating and contain Chrome-free solid inorganic filler formulation coating.Although contain chromic salts prescription composite coating in welding, heat-resistingly, antirust have a good performance, there are severe toxicity and physiology that the chromic salt and the pure ethers organic solvent of hazardness are arranged but in the coating preparation, used to human body, and in use environment produced severe contamination.And contain Chrome-free solid inorganic filler formulation coating because the inoganic solids filler does not reach the following granularity of 100 nanometers, at weldability, annealing, carbon drop etc. certain defective is arranged still.
Summary of the invention:
The objective of the invention is to propose a kind of harmful materials such as chromic salt, heavy metal and toluene ethers that do not contain at the defective of above-mentioned existence, the sticking power one-level, resistance is greater than 8 Ω/cm2, stress relief, chemical resistant properties, the nano-scale water polyvinyl acetate emulsion non-directional cold-rolling silicon steel coating that the mechanics of surface performance is good.
Technical solution of the present invention, the heat cured water paint of polyvinyl acetate emulsion for cold rolled silicon steel, its quality component is than being the water-based polyvinyl acetate emulsion: inorganic solution: linking agent=(40-45): (45-50): (10-12).
The preparation method of heat cured water paint of polyvinyl acetate emulsion for cold rolled silicon steel, its processing step is divided into, one, preparation water-based polyvinyl acetate emulsion, two, the preparation inorganic solution, three, water-based polyvinyl acetate emulsion, inorganic solution, linking agent are mixed.
Described preparation water-based polyvinyl acetate emulsion, get stablizer " BH-27 " 30-40 part, deionized water 20-30 part, directly add to mix in the reactor and stir, 80-88 ℃ of of of of of of and be warming up to, get tertiary carbon acid esters 33-43 part, vinyl acetate between to for plastic 42-52 part, Jia Jibingxisuanyizhi 12-22 part, vinylformic acid 3-13 part, above-mentioned each monomer and 10 parts of emulsifying agents, 20 parts of deionized waters, 1 part of initiator (Guo Liu Suan ), mix pre-emulsification, under 80-88 ℃ temperature, begin to drip emulsion then, divide to add in 3 hours, be incubated 30 minutes again; Then in 5 minutes, drip the mixing solutions of 1 part of initiator (Guo Liu Suan ), 1 part of ammoniacal liquor, 20 parts of water, 90 ℃ of of of of of of and be warming up to, be incubated 1 hour, 40 ℃ of of of of of of when treating that temperature drops to, neutralize, make polyvinyl acetate emulsion, its pH value 6.5-7.5 with 2 parts of ammoniacal liquor.
Described preparation inorganic solution: divide two groups of A, B, wherein the A group: phosphatase 11 0-20 part, deionized water 40-50 part: B group: magnesium oxide 20-30 part, boric acid 15-25 part, silicon sol 55-65 part, aluminium dihydrogen phosphate 10-20 part; Magnesium oxide in the B group and aluminium dihydrogen phosphate are mixed, be dissolved into solution C with the phosphoric acid in the A group then; Boric acid in the B group, silicon sol become solution D with the deionized water dissolving in the A group, and solution C and solution D mixing and stirring at normal temperatures become inorganic solution.
Water-based polyvinyl acetate emulsion, inorganic solution, linking agent are mixed and made into the heat cured water paint of polyvinyl acetate emulsion for cold rolled silicon steel according to proportioning.
Advantage of the present invention:
1, because of the inorganic solution that adopts has with organic emulsion good affinity, consistency are arranged, guaranteed that coating has good film forming and over-all properties: resistivity: interlamination resistance 20 Ω/cm
2More than/the sheet.Electromagnetic performance: P15 is lower than national standard 20%.Temperature tolerance: at 100%N
2Under the gas shield through 800 ℃ of annealing insulations after 3 hours coating do not have the dry linting of coming off phenomenon.Chemical resistant properties: under 150 ℃ of temperature, be soaked in the R22R134a refrigeration agent and+ester class refrigerator oil in after 170 hours coating do not have weightlessness, the weightening finish between 0.0001-0.0005.Rust-preventing characteristic: soaked 72 hours at 3% salt water droplet, non-corroding comes off.Coatingsurface hardness 〉=9H (pencil method).
2, because of adopting the inorganic solution that does not contain the solid inorganic filler, when welding, be difficult for producing assorted slag, stop to weld pore and form.
3, because of adopting the organic emulsion that does not contain the inorganic solution of solid inorganic filler and can have lubricity behind coating curing, reduce coating greatly to die wear, make punch die when the punching of 300 times/min speed, life cycle reaches more than 1,500,000 times.
Embodiment
Embodiment 1, and preparation water-based polyvinyl acetate emulsion is got 30 parts of stablizers, 20 parts of deionized waters, directly add to mix in the reactor and stir, 80 ℃ of of of of of of and be warming up to, get 33 parts of tertiary carbon acid esters, 42 parts of vinyl acetate between to for plastics, 12 parts of Jia Jibingxisuanyizhis, 3 parts in vinylformic acid is above-mentioned each monomer and, 10 parts of emulsifying agents, 20 parts of deionized waters, 1 part of initiator (Guo Liu Suan ), mix pre-emulsification, 80 ℃ of of of of of of temperature of under, begin to drip emulsion then, divide to add in 3 hours, be incubated 30 minutes again; Then in 5 minutes, drip the mixing solutions of 1 part of initiator (Guo Liu Suan ), 1 part of ammoniacal liquor, 20 parts of water, 90 ℃ of of of of of of and be warming up to, be incubated 1 hour, 40 ℃ of of of of of of when treating that temperature drops to, neutralize, make polyvinyl acetate emulsion, its pH value 7.5 with 2 parts of ammoniacal liquor.
Preparation inorganic solution: divide two groups of A, B, wherein the A group: 0 part of phosphatase 11,40 parts of deionized waters: B group: 20 parts in magnesium oxide, 15 parts of boric acid, 55 parts of silicon sol, 10 parts of aluminium dihydrogen phosphates; Magnesium oxide in the B group and aluminium dihydrogen phosphate are mixed, be dissolved into solution C with the phosphoric acid in the A group then; Boric acid in the B group, silicon sol become solution D with the deionized water dissolving in the A group, and solution C and solution D mixing and stirring at normal temperatures become inorganic solution.
40 parts of water intaking property polyvinyl acetate emulsions, 50 parts of inorganic solutions, 10 parts of linking agents (silicone resin) respectively.In the water-based polyvinyl acetate emulsion, add inorganic solution and linking agent, stir, add 0.5% thickening material of polyvinyl acetate emulsion, inorganic solution and linking agent total amount again, and evenly stir, regulate viscosity to 12 second (coating-4 viscosity meter mensuration), temperature is 25 ℃, at last packing.
Embodiment 2, and preparation water-based polyvinyl acetate emulsion is got 40 parts of stablizers, 30 parts of deionized waters, directly add to mix in the reactor and stir, 88 ℃ of of of of of of and be warming up to, get 43 parts of tertiary carbon acid esters, 52 parts of vinyl acetate between to for plastics, 22 parts of Jia Jibingxisuanyizhis, 13 parts in vinylformic acid is above-mentioned each monomer and, 10 parts of emulsifying agents, 20 parts of deionized waters, 1 part of initiator (Guo Liu Suan ), mix pre-emulsification, 88 ℃ of of of of of of temperature of under, begin to drip emulsion then, divide to add in 3 hours, be incubated 30 minutes again; Then in 5 minutes, drip the mixing solutions of 1 part of initiator (Guo Liu Suan ), 1 part of ammoniacal liquor, 20 parts of water, 90 ℃ of of of of of of and be warming up to, be incubated 1 hour, 40 ℃ of of of of of of when treating that temperature drops to, neutralize, make polyvinyl acetate emulsion, its pH value 6.5 with 2 parts of ammoniacal liquor.
Preparation inorganic solution: divide two groups of A, B, wherein the A group: 20 parts of phosphoric acid, 50 parts of deionized waters: B group: 30 parts in magnesium oxide, 25 parts of boric acid, 65 parts of silicon sol, 20 parts of aluminium dihydrogen phosphates; Magnesium oxide in the B group and aluminium dihydrogen phosphate are mixed, be dissolved into solution C with the phosphoric acid in the A group then; Boric acid in the B group, silicon sol become solution D with the deionized water dissolving in the A group, and solution C and solution D mixing and stirring at normal temperatures become inorganic solution.
45 parts of water intaking property polyvinyl acetate emulsions, 48 parts of inorganic solutions, 12 parts of linking agents (silicone resin) respectively.
In the water-based polyvinyl acetate emulsion, add inorganic solution and linking agent, stir, add 2.5% thickening material of polyvinyl acetate emulsion, inorganic solution and linking agent total amount again, and evenly stir, regulate viscosity to 30 second (coating-4 viscosity meter mensuration), temperature is 25 ℃, at last packing.
Embodiment 3,
Preparation water-based polyvinyl acetate emulsion is got 35 parts of stablizers, 25 parts of deionized waters, directly adds to mix in the reactor to stir, 84 ℃ of of of of of of and be warming up to, get 38 parts of tertiary carbon acid esters, 47 parts of vinyl acetate between to for plastics, 17 parts of Jia Jibingxisuanyizhis, 8 parts in vinylformic acid, above-mentioned each monomer and 10 parts of emulsifying agents, 20 parts of deionized waters, 1 part of initiator (Guo Liu Suan ), mix pre-emulsification, 88 ℃ of of of of of of temperature of under, begin to drip emulsion then, divide to add in 3 hours, be incubated 30 minutes again; Then in 5 minutes, drip the mixing solutions of 1 part of initiator (Guo Liu Suan ), 1 part of ammoniacal liquor, 20 parts of water, 90 ℃ of of of of of of and be warming up to, be incubated 1 hour, 40 ℃ of of of of of of when treating that temperature drops to, neutralize, make polyvinyl acetate emulsion, its pH value 7 with 2 parts of ammoniacal liquor.
Preparation inorganic solution: divide two groups of A, B, wherein the A group: 5 parts of phosphatase 11s, 45 parts of deionized waters: B group: 25 parts in magnesium oxide, 20 parts of boric acid, 60 parts of silicon sol, 15 parts of aluminium dihydrogen phosphates; Magnesium oxide in the B group and aluminium dihydrogen phosphate are mixed, be dissolved into solution C with the phosphoric acid in the A group then; Boric acid in the B group, silicon sol become solution D with the deionized water dissolving in the A group, and solution C and solution D mixing and stirring at normal temperatures become inorganic solution.
44 parts of water intaking property polyvinyl acetate emulsions, 45 parts of inorganic solutions, 11 parts of linking agents (silicone resin) respectively.
In the water-based polyvinyl acetate emulsion, add inorganic solution and linking agent, stir, add 2% thickening material of polyvinyl acetate emulsion, inorganic solution and linking agent total amount again, and evenly stir, regulate viscosity to 25 second (coating-4 viscosity meter mensuration), temperature is 25 ℃, at last packing.
Claims (5)
1, heat cured water paint of polyvinyl acetate emulsion for cold rolled silicon steel, the quality component that it is characterized in that it is than being the water-based polyvinyl acetate emulsion: inorganic solution: linking agent=(40-45): (45-50): (10-12).
2, the preparation method of heat cured water paint of polyvinyl acetate emulsion for cold rolled silicon steel, its processing step is divided into, one, preparation water-based polyvinyl acetate emulsion, two, the preparation inorganic solution, three, water-based polyvinyl acetate emulsion, inorganic solution, linking agent are mixed.
3, the preparation method of heat cured water paint of polyvinyl acetate emulsion for cold rolled silicon steel according to claim 2, it is characterized in that described preparation water-based polyvinyl acetate emulsion:get stablizer 30-40 part, deionized water 20-30 part, directly add to mix in the reactor and stir, 80-88 ℃ of of of of of of and be warming up to, get tertiary carbon acid esters 33-43 part, vinyl acetate between to for plastic 42-52 part, Jia Jibingxisuanyizhi 12-22 part, vinylformic acid 3-13 part, 10 parts of above-mentioned each monomer and emulsifying agents, 20 parts of deionized waters, 1 part of initiator (Guo Liu Suan ) mixes pre-emulsification, 80-88 ℃ of of of of of of temperature of begins to drip emulsion then under, divide to add in 3 hours, be incubated 30 minutes again; Then in 5 minutes, drip the mixing solutions of 1 part of initiator (Guo Liu Suan ), 1 part of ammoniacal liquor, 20 parts of water, 90 ℃ of of of of of of and be warming up to, be incubated 1 hour, 40 ℃ of of of of of of when treating that temperature drops to, neutralize, make polyvinyl acetate emulsion, its pH value 6.5-7.5 with 2 parts of ammoniacal liquor.
4, the preparation method of heat cured water paint of polyvinyl acetate emulsion for cold rolled silicon steel according to claim 2, it is characterized in that described preparation inorganic solution: divide two groups of A, B, wherein the A group: phosphatase 11 0-20 part, deionized water 40-50 part: B group: magnesium oxide 20-30 part, boric acid 15-25 part, silicon sol 55-65 part, aluminium dihydrogen phosphate 10-20 part; Magnesium oxide in the B group and aluminium dihydrogen phosphate are mixed, be dissolved into solution C with the phosphoric acid in the A group then; Boric acid in the B group, silicon sol become solution D with the deionized water dissolving in the A group, and solution C and solution D mixing and stirring at normal temperatures become inorganic solution.
5, the preparation method of heat cured water paint of polyvinyl acetate emulsion for cold rolled silicon steel according to claim 2 is characterized in that water-based polyvinyl acetate emulsion, inorganic solution, linking agent are mixed and made into the heat cured water paint of polyvinyl acetate emulsion for cold rolled silicon steel according to proportioning.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100860713A CN100448938C (en) | 2006-07-24 | 2006-07-24 | Heat cured water paint of polyvinyl acetate emulsion for cold rolled silicon steel and its prepn |
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| CNB2006100860713A CN100448938C (en) | 2006-07-24 | 2006-07-24 | Heat cured water paint of polyvinyl acetate emulsion for cold rolled silicon steel and its prepn |
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| CN1887987A true CN1887987A (en) | 2007-01-03 |
| CN100448938C CN100448938C (en) | 2009-01-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101486866B (en) * | 2009-02-20 | 2012-06-06 | 南京大学 | High temperature resistant annealing treated single-component chromium-free water-based silicon steel sheet insulating coating solution |
| CN107190252A (en) * | 2017-06-13 | 2017-09-22 | 武汉圆融科技有限责任公司 | A kind of chrome-free insulating coating composition and preparation method thereof and directional silicon steel |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2704440B2 (en) * | 1989-10-04 | 1998-01-26 | 株式会社神戸製鋼所 | Composition for insulating coating treatment of electrical steel sheet |
| JP2000034574A (en) * | 1998-07-15 | 2000-02-02 | Nkk Corp | Silicon steel sheet excellent in resistance to bad odor, sticking and corrosion |
| CN1186411C (en) * | 2003-06-27 | 2005-01-26 | 许守煜 | Water soluble thermosetting acrylate cold rolled silicon steel coating |
| CN1269918C (en) * | 2004-10-20 | 2006-08-16 | 太原理工大学 | Water soluble thermo-crosslinked silicon steel sheet paint |
-
2006
- 2006-07-24 CN CNB2006100860713A patent/CN100448938C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101486866B (en) * | 2009-02-20 | 2012-06-06 | 南京大学 | High temperature resistant annealing treated single-component chromium-free water-based silicon steel sheet insulating coating solution |
| CN107190252A (en) * | 2017-06-13 | 2017-09-22 | 武汉圆融科技有限责任公司 | A kind of chrome-free insulating coating composition and preparation method thereof and directional silicon steel |
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| Publication number | Publication date |
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| CN100448938C (en) | 2009-01-07 |
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