CN101270256A - Water-soluble insulating varnish and preparation method thereof - Google Patents
Water-soluble insulating varnish and preparation method thereof Download PDFInfo
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Abstract
The invention relates to water-soluble insulating varnish and a preparation method thereof. The water-soluble insulating varnish of the invention consists of water-soluble resin, water-borne curing agent, water-base defoamer, water-base flow agent, water-base catalyst and water; the proportion of the components is as below: 30 percent to 50 percent of water-soluble resin; 10 percent to 30 percent of water-base curing agent, 1 percent to 1.0 percent of water-base catalyst, 0 percent to 0.5 percent of water-base defoamer, 0 percent to 0.5 percent of water-base flow agent and 20 percent to 60 percent of water; the water-soluble insulating varnish has the advantages of environmental protection and safety; no harmful solvent released to the atmosphere; no inflammability and explosion, no corrosion; no transparent or translucent paint liquid, good stability, long application service life under normal temperature; simple solidifying process, good insulating performance of the paint film after solidification, high strength and strong toughness; technical indexes meeting or exceeding the technical indexes of the prior solvent-type insulating varnish; the most important is that the insulating varnish takes water as solvent or diluent, which does not bring pollution and reduces the cost.
Description
Technical field
The present invention relates to a kind of insullac, relating in particular to a kind of is the water-soluble insulating varnish and the manufacture method thereof of solvent or thinner with water.
Background technology
The conventional oil soluble resin, as Resins, epoxy, Synolac, acrylic resin, urethane, vibrin etc. owing to possess excellent electric property, so be widely used in the insulating material field.
But lacquer liquid when being used for heat cured system is owing to contain organic solvent such as a large amount of toluene, dimethylbenzene and in use use a large amount of benzene kind solvents to make thinner again, to obtain good impregnation technology.Therefore, most solvent directly evaporate in the air when solvent-borne type impregnating varnish solidified, thereby serious environment pollution and cause the great wasting of resources and causes very big harm to operator's physical and mental health, also was the hidden danger that stays of fire simultaneously.The today of growing to even greater heights, building a conservation-minded society in environmental requirement, can not satisfy needs of society with oil as the insullac of solvent, it will limited day by day using, and therefore oil-soluble resin being carried out the Water-borne modification processing and preparing insulative water paint with water as solvent or thinner becomes main development trend.
And the Water-borne modification of resin mainly adopts emulsion process at present, in the resin emulsion of preparation, resin dispersion phase particulate size is bigger in the emulsion, be micron order, the out-of-shape of particle and broad particle distribution, causing emulsion is that oyster white is opaque, and is subjected to the influence of ambient conditions such as temperature, soda acid, light, collision etc. easily and skinning, breakdown of emulsion etc. take place easily; Owing to contain a large amount of emulsifying agents in the lacquer liquid, solidify the back color and luster outward appearance and the insulating property of paint film are brought disadvantageous effect in addition, therefore, limited its application greatly in the electric insulation process field.
How preparing a kind of resin and can dissolve each other with water and form transparent or semitransparent solution, is the problem that the science and technology personnel will solve with this as insullac.
Summary of the invention
The technical issues that need to address of the present invention have provided a kind of water-soluble insulating varnish, are intended to solve the above problems;
The present invention also provides the method for making this water-soluble insulating varnish.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
The present invention is made up of water soluble resin, waterborne curing agent, water-based defoamer, water-based flow agent, aqueous catalyst, water; Its proportioning is: water soluble resin 30～50%, waterborne curing agent 10～30%, aqueous catalyst 0～1.0%, water-based defoamer 0～0.5%, water-based flow agent 0～0.5%, water 20～60%.
Manufacture method of the present invention realizes by following steps:
Take by weighing raw material by weight ratio;
Under the normal temperature, water soluble resin and waterborne curing agent are added in the container, and open whipping appts, make two kinds of mixed with resin even;
Under whipped state, add defoamer, flow agent, add the back and continue to stir 5-10min;
Add entry and catalyzer again, behind the stirring 30-50min, promptly get this product.
Compared with prior art, the invention has the beneficial effects as follows: Environmental Safety, in atmosphere, do not discharge hazardous solvent, nonflammable explosive, non-corrosiveness; The lacquer liquid transparency is good and stable, and normal temperature is long following working life; Curing process is simple, solidifies back paint film good insulation preformance, strength high toughness is strong, meets or exceeds the technical indicator of existing solvent-borne type insullac; The most important thing is with water to be solvent or thinner, not only pollution-freely also can reduce cost.
Embodiment:
Below in conjunction with embodiment the present invention is described in further detail:
The present invention is achieved by the following technical solutions:
The present invention is made up of water soluble resin, waterborne curing agent, aqueous catalyst, water-based defoamer, water-based flow agent, water; Its proportioning is: water soluble resin 30～50%, waterborne curing agent 10～30%, aqueous catalyst 0～1.0%, water-based defoamer 0～0.5%, water-based flow agent 0～0.5%, water 20～60%.
Described water soluble resin can be that water-soluble epoxy resin is (as 681 of the good letter chemical industry in Changzhou company limited production, 811 resins, but or the HTW-609 water oil-in-water type Resins, epoxy of Suzhou Sheng Jiete kind resin company limited production), water soluble alkyd resin is (as the cy918 of Hebei sun in morning water-miscible paint liquid group production, the cy919 water soluble resin, the Resydrol AM 224w of UCB chemical industry), Polyester Resin Water Soluble is (as the SYNpoly-660 of U.S. SYNCHEM company production, 680,690), water-borne acrylic resin is (as the WRS-1 of Beijing hundred Lichuan industry and trade company limiteds or the NL-812 of the sincere synthetic resins of Foshan Hao company limited production, 813, or the YANAC-A1127 that produces of Malaysian YANTECH company, 1128,1129) a kind of or two kinds mixture.
Described waterborne curing agent can be that the methyl-etherified aminoresin of different degree of etherification is (as the Resimene 717,741 of DCB chemical industry,), one or more mixture of butyl ether aminoresin (SM582-3, the 585-1 that produce as Jiangsu three lignify worker Group Co.,Ltd, or the Maprenal MF 800,820 of DCB chemical industry).
Described water-soluble catalyst can be U.S. cyanogen specialization worker's cytec 4040, a kind of or several mixture of cytec 4045.
Described water insoluble defoamer can be the Acronal 5765,535 of 080,082 or the BYK chemical company of Deuchem Co., Ltd., a kind of or several mixture of BYK-020.
Described water-soluble flow agent can be a kind of or several mixture of BYK-345, the Byketol-WS of Hangzhou benevolence Taxodiaceae skill the company limited WLP201, the WDP205 that produce or BYK chemistry.
Described water can be a kind of or several mixture of distilled water, deionized water, tap water, pure water.
Manufacture method of the present invention realizes by following steps:
Take by weighing raw material by weight ratio;
Under the normal temperature, water soluble resin and waterborne curing agent are added in the container, and open whipping appts, make two kinds of mixed with resin even;
Under whipped state, add defoamer, flow agent, add the back and continue to stir 5-10min;
Add entry and catalyzer again, behind the stirring 30-50min, promptly get this product.
Process for preparation technology of the present invention is simple, easy to operate, and is lower to the requirement of equipment, and nonhazardous gas is discharged in the building-up process, the water soluble resin of preparing can dissolve each other with water, transparent or semitransparent, the package stability height cooperates curing speed fast with waterborne curing agent; Cured article good insulation preformance, shrinking percentage are little, good toughness, physical strength height, and temperature classification reaches the H level.
Curing process of the present invention is: behind spraying, brushing or the dipping, solidify 1.5-2h (looking film thickness) in 130 ℃.
Purposes of the present invention is: can spray, brush or flood, be applied to the insulation processing of motor, electrical equipment winding, coil etc.Make it substitute existing solvent-borne type insulating impregnating varnish, what be applied to the winding insulation of all kinds of E, B, F, the interchange of H level, direct-current machine and specific type of electric machine and various electrical equipment, transformer winding immerses technology fast, also is applicable to the fast vacuum pressure impregnation technology of motor, electrical equipment winding or coil.
Further illustrate content of the present invention below in conjunction with embodiment:
Embodiment 1:
Under the normal temperature, 30g water soluble alkyd resin and 20g waterborne curing agent cymel 350 are added in the container, and open whipping appts, make two kinds of mixed with resin even; Under whipped state, add defoamer 0.1g, flow agent 0.35g, add the back and continue to stir 5-10min; Add catalyzer 0.2g, water 58.5g again, behind the stirring 40-60min, promptly get this product.Lacquer liquid is translucent liquid, does not have mechanical impurity.After 130 ℃ * 2h solidified, the paint film pencil hardness reached 2H and possesses certain snappiness, and the normality electrical strength reaches 125MV/m, was 101MV/m behind the immersion 24h, and the normality volume specific resistance is 2.1 * 10
12Ω m is 9.2 * 10 behind the immersion 24h
10Ω m.
Embodiment 2:
Under the normal temperature, 40g water-soluble epoxy resin and 10g waterborne curing agent cymel 325 are added in the container, and open whipping appts, make two kinds of mixed with resin even; Under whipped state, add defoamer 0.1g, flow agent 0.35g, add the back and continue to stir 5-10min; Add catalyzer 0.2g, water 58.5g again, behind the stirring 30-50min, promptly get this product.Lacquer liquid is light yellow transparent liquid, does not have mechanical impurity.After 130 ℃ * 2h solidifies, the paint film pencil hardness reach 2H and and possess certain snappiness, the normality electrical strength reaches 119MV/m, is 96MV/m behind the immersion 24h, the normality volume specific resistance is 2.0 * 10
12Ω m is 8.4 * 10 behind the immersion 24h
10Ω m.
Embodiment 3:
Under the normal temperature, 40g Polyester Resin Water Soluble and 13g waterborne curing agent cymel 303 are added in the container, and open whipping appts, make two kinds of mixed with resin even; Under whipped state, add defoamer 0.1g, flow agent 0.35g, add the back and continue to stir 5-10min; Add initiator 0.2g, water 45.75g again, behind the stirring 30-50min, promptly get this product.For transparent blueing translucent liquid, there is not mechanical impurity.After 130 ℃ * 2h solidified, the paint film pencil hardness reached 3H and possesses certain snappiness, and the normality electrical strength reaches 137MV/m, was 116MV/m behind the immersion 24h, and the normality volume specific resistance is 2.9 * 10
12Ω m is 10.7 * 10 behind the immersion 24h
11Ω m.
Claims (6)
1. a water-soluble insulating varnish is made up of water soluble resin, waterborne curing agent, aqueous catalyst, water-based defoamer, water-based flow agent, water; Its proportioning is: water soluble resin 30～50%, waterborne curing agent 10～30%, aqueous catalyst 0～1.0%, water-based defoamer 0～0.5%, water-based flow agent 0～0.5%, water 20～60%.
2. water-soluble insulating varnish according to claim 1, wherein: described water soluble resin can be a kind of or two kinds the mixture or the modifier of water-soluble epoxy resin, water soluble alkyd resin, Polyester Resin Water Soluble, water soluble acrylic resin, aqurous ployurethane; Described waterborne curing agent can be one or more a mixture of methyl-etherified aminoresin, the butyl ether aminoresin of different degree of etherification; Described water-soluble catalyst can be U.S. cyanogen specialization worker's cytec 4040, a kind of or several mixture of cytec 4045; Described water insoluble defoamer can be the Acronal 5765,535 of 080,082 or the BYK chemical company of Deuchem Co., Ltd., a kind of or several mixture of BYK-020; Described water-soluble flow agent can be a kind of or several mixture of BYK-345, the Byketol-WS of Hangzhou benevolence Taxodiaceae skill the company limited WLP201, the WDP205 that produce or BYK chemistry; Described water can be a kind of or several mixture of distilled water, deionized water, tap water, pure water.
3. the method for manufacturing such as claim 1 water-soluble insulating varnish, realize by following steps:
Take by weighing raw material by weight ratio;
Under the normal temperature, water soluble resin and waterborne curing agent are added in the container, and open whipping appts, make two kinds of mixed with resin even;
Under whipped state, add defoamer, flow agent, add the back and continue to stir 5-10min;
Add entry and catalyzer again, behind the stirring 30-50min, promptly get this product.
4. method according to claim 3, wherein: under the normal temperature, 30g water soluble alkyd resin and 20g waterborne curing agent cymel 350 are added in the container, and open whipping appts, make two kinds of mixed with resin even; Under whipped state, add defoamer 0.1g, flow agent 0.35g, add the back and continue to stir 5-10min; Add catalyzer 0.2g, water 58.5g again, behind the stirring 40-60min, promptly get this product.
5. method according to claim 3, wherein: under the normal temperature, 40g water-soluble epoxy resin and 10g waterborne curing agent cymel 325 are added in the container, and open whipping appts, make two kinds of mixed with resin even; Under whipped state, add defoamer 0.1g, flow agent 0.35g, add the back and continue to stir 5-10min; Add catalyzer 0.2g, water 58.5g again, behind the stirring 30-50min, promptly get this product.
6. method according to claim 3, wherein: under the normal temperature, 40g Polyester Resin Water Soluble and 13g waterborne curing agent cymel 303 are added in the container, and open whipping appts, make two kinds of mixed with resin even; Under whipped state, add defoamer 0.1g, flow agent 0.35g, add the back and continue to stir 5-10min; Add catalyzer 0.2g, water 45.75g again, behind the stirring 30-50min, promptly get this product.
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| CNA2007100383545A CN101270256A (en) | 2007-03-23 | 2007-03-23 | Water-soluble insulating varnish and preparation method thereof |
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| CNA2007100383545A CN101270256A (en) | 2007-03-23 | 2007-03-23 | Water-soluble insulating varnish and preparation method thereof |
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| CN101987936A (en) * | 2010-12-09 | 2011-03-23 | 上海电动工具研究所 | Single-component water-soluble insulated enamel paint and preparation method thereof |
| CN102153927A (en) * | 2011-02-21 | 2011-08-17 | 重庆三峡油漆股份有限公司 | Water-based electric appliance insulating dip-coating paint |
| CN102260449A (en) * | 2010-05-30 | 2011-11-30 | 湘潭瑞鑫电气科技有限责任公司 | Waterborne insulating paint |
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