CN105336396A - Transformer insulating material with good heat conduction effect - Google Patents
Transformer insulating material with good heat conduction effect Download PDFInfo
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- CN105336396A CN105336396A CN201510739586.8A CN201510739586A CN105336396A CN 105336396 A CN105336396 A CN 105336396A CN 201510739586 A CN201510739586 A CN 201510739586A CN 105336396 A CN105336396 A CN 105336396A
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Abstract
The invention discloses a transformer insulating material with a good heat conduction effect. The transformer insulating material is prepared by the following raw materials in parts by weight: 0.6-0.7 part of a silane coupling agent kh550, 6-8 parts of mica, 1-1.5 parts of glycine, 0.3-0.4 part of a silane coupling agent kh570, 0.1-0.2 part of an emulsifier OP-10, 0.2-0.3 part of sodium dodecanesulphonate, 2-3 parts of an E44 epoxy resin, 0.3-0.5 part of polyacrylamide, 500-550 parts of a pulpboard, 1.6-2 parts of titanium dioxide, 0.3-0.4 parts of propylene glycol alginate, 2-2.5 parts of a polyurethane emulsion, 3-4 parts of a straw fiber, 0.6-0.8 part of a hollow glass bead and a proper amount of deionized water. The preparation method is simple, such properties as heat conduction, weather resistance, high temperature resistance and the like are good, and the insulating material is applied to a transformer and has good application prospect.
Description
Technical field
The present invention relates to transformer technology field, particularly relate to a kind of insulating material for transformer of good heat conduction effect.
Background technology
In recent years, along with China's electric power, electrically, the fast development of the industry such as electronics, household electrical appliances and communication, the requirement of people to transformer is more and more higher.Cellulose insulation paper is one of most widely used interior insulating material in oil-immersed power transformer, and because run duration cannot be changed, the quality of its machinery and insulation property directly decides the useful life of transformer.In real transformer, insulating paper is subject to the effect of high electrical-field stressing for a long time, will cause transformer fault once puncture.If promote the electric property of insulating paper, just can save the use amount of insulating paper, extend the working life of insulating paper, reduce the width of transformer oil clearance, and then the volume of limiting transformer and core loss, therefore, the study on the modification carrying out insulating paper is significant.Mica is indispensable insulating material in electric and electronic industry.At present, although there is a lot of new material in the world, wherein also do not have a kind of insulating material can replace mica completely.Utilize mica to carry out modification insulating paper and can obtain the more excellent insulating paper of performance, but the domestic and international research for this respect is little at present.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, provides a kind of insulating material for transformer of good heat conduction effect.
The present invention is achieved by the following technical solutions:
The insulating material for transformer of good heat conduction effect, is made up of the raw material of following weight portion: silane coupler kh5500.6-0.7, mica 6-8, glycine 1-1.5, silane coupler kh5700.3-0.4, emulsifier op-10 0.1-0.2, dodecyl sodium sulfate 0.2-0.3, E44 epoxy resin 2-3, polyacrylamide 0.3-0.5, pulpboard 500-550, titanium dioxide 1.6-2, propylene glycol alginate 0.3-0.4, polyaminoester emulsion 2-2.5, stalk fibre 3-4, hollow glass microbead 0.6-0.8, deionized water are appropriate.
The insulating material for transformer of described a kind of good heat conduction effect, be made up of following concrete steps:
(1) silane coupler kh550 is joined ethanol with water quality than in the solution for 1:1, heating water bath to 35 ° C, dripping ethanedioic acid regulates pH value to be 4, hydrolysis 1-1.5h, mica sheet is impregnated in the ethanol of 75% to stir and soaks 1-2h, then supersound washing 10-15min, then soak 0.5h with deionized water, finally be placed in baking oven dry 2h under 110 ° of C, grind for subsequent use;
(2) mica of above-mentioned preparation is added in the hydrolyzate of silane coupler kh550, bath temperature controls at 60-65 ° of C, then titanium dioxide and polyaminoester emulsion ultrasonic agitation 30-45min is added, filter, spend deionized water for several times, in constant temperature blast drying oven, under 90 ° of C, dry 2-3h is for subsequent use afterwards;
(3) glycine is added in flask with after the water-soluble solution of 13 times amount with silane coupler kh570, emulsifier op-10, dodecyl sodium sulfate and E44 epoxy resin, control bath temperature and slowly stir 3h under 80-85 ° of C, add stalk fibre and hollow glass microbead continuation stirring 10-15min again, then adding sodium hydroxide solution regulates pH value in neutral, again with high-shearing dispersion emulsifying machine by its emulsification, obtain stable modified aqueous epoxy resin emulsion;
(4) modified aqueous epoxy resin emulsion, propylene glycol alginate and polyacrylamide mixing prepared by modified micaceous, the step (3) step (2) prepared, add appropriate deionized water again and be diluted to the slurry of mass concentration at 0.5-0.6%, pull an oar after pulpboard is soaked, making beating is stopped when beating degree is 40-45 ° of SR, then slurry is put into fiber dissociation device, adding deionized water makes the concentration of slurry dissociate at 2-2.5%, obtains paper pulp suspension-turbid liquid for subsequent use;
(5) by paper pulp suspension-turbid liquid and the mixing of mica slurry, with electric power stirring rod strong stirring 10min, then continue the 15min that dissociates, carry out afterwards manufacturing paper with pulp, drying and can obtain insulating paper.
Advantage of the present invention is: the present invention adopts silane coupler kh550 to carry out surface modification to mica, strengthen overseas Chinese federation's effect of mica surface, the compatibility of the aqueous epoxy resin emulsion of improvement and modification, improve the adhesive force to mica surface, its adhesion and dispersing uniformity can be greatly improved with cellulose pulp mixing, enhance the hot strength of insulating paper, dielectric strength, the effect such as electric property and heat resistance, the titanium dioxide added and polyaminoester emulsion can improve the heat conduction of insulating paper, wear-resisting, the performance such as weather-proof and high temperature resistant, when the stalk fibre added and hollow glass microbead can not affect insulating paper performance own, cost-saving and improve the effects such as its resistance to chemical attack, preparation method of the present invention is simple, heat conduction, weather-proof, the performance such as high temperature resistant is good, have a good application prospect for transformer.
Embodiment
The insulating material for transformer of good heat conduction effect, is made up of the raw material of following weight portion (kilogram): silane coupler kh5500.6, mica 6, glycine 1, silane coupler kh5700.3, polyoxyethylene nonylphenol ether, dodecyl sodium sulfate 0.2, E44 epoxy resin 2, polyacrylamide 0.3, pulpboard 500, titanium dioxide 1.6, propylene glycol alginate 0.3, polyaminoester emulsion 2, stalk fibre 3, hollow glass microbead 0.6, deionized water are appropriate.
The insulating material for transformer of described a kind of good heat conduction effect, be made up of following concrete steps:
(1) silane coupler kh550 is joined ethanol with water quality than in the solution for 1:1, heating water bath to 35 ° C, dripping ethanedioic acid regulates pH value to be 4, hydrolysis 1h, mica sheet is impregnated in the ethanol of 75% to stir and soaks 1h, then supersound washing 10min, then soak 0.5h with deionized water, finally be placed in baking oven dry 2h under 110 ° of C, grind for subsequent use;
(2) mica of above-mentioned preparation is added in the hydrolyzate of silane coupler kh550, bath temperature controls, at 60 ° of C, then to add titanium dioxide and polyaminoester emulsion ultrasonic agitation 30min, filters, spend deionized water for several times, in constant temperature blast drying oven, under 90 ° of C, dry 2h is for subsequent use afterwards;
(3) glycine is added in flask with after the water-soluble solution of 13 times amount with silane coupler kh570, polyoxyethylene nonylphenol ether, dodecyl sodium sulfate and E44 epoxy resin, control bath temperature and slowly stir 3h under 80 ° of C, add stalk fibre and hollow glass microbead continuation stirring 10min again, then adding sodium hydroxide solution regulates pH value in neutral, again with high-shearing dispersion emulsifying machine by its emulsification, obtain stable modified aqueous epoxy resin emulsion;
(4) modified aqueous epoxy resin emulsion, propylene glycol alginate and polyacrylamide mixing prepared by modified micaceous, the step (3) step (2) prepared, add again appropriate deionized water be diluted to mass concentration 0.5% slurry, pull an oar after pulpboard is soaked, making beating is stopped when beating degree is 40 ° of SR, then slurry is put into fiber dissociation device, adding deionized water makes the concentration of slurry dissociate 2%, obtains paper pulp suspension-turbid liquid for subsequent use;
(5) by paper pulp suspension-turbid liquid and the mixing of mica slurry, with electric power stirring rod strong stirring 10min, then continue the 15min that dissociates, carry out afterwards manufacturing paper with pulp, drying and can obtain insulating paper.
Its performance test of the insulating paper prepared according to the present embodiment is as follows: puncture voltage is 4KV, dielectric strength is 36KV/mm, the fire-retardant rank of insulating paper is V0 level, paper whiteness>=80%, dry tensile strength is 3.6KN/m, wet tensile (strength) is 0.47KN/m, suction head 52mm, air permeability is 20 ± 4s, and specific insulation is 1.3 × 10
6, sheet resistance is 4.6 × 10
4, dielectric constant is 5.6, and dielectric dissipation factor is 0.043.
Claims (2)
1. the insulating material for transformer of a good heat conduction effect, it is characterized in that, be made up of the raw material of following weight portion: silane coupler kh5500.6-0.7, mica 6-8, glycine 1-1.5, silane coupler kh5700.3-0.4, emulsifier op-10 0.1-0.2, dodecyl sodium sulfate 0.2-0.3, E44 epoxy resin 2-3, polyacrylamide 0.3-0.5, pulpboard 500-550, titanium dioxide 1.6-2, propylene glycol alginate 0.3-0.4, polyaminoester emulsion 2-2.5, stalk fibre 3-4, hollow glass microbead 0.6-0.8, deionized water are appropriate.
2. the insulating material for transformer of a kind of good heat conduction effect according to claim 1, is characterized in that, be made up of following concrete steps:
(1) silane coupler kh550 is joined ethanol with water quality than in the solution for 1:1, heating water bath to 35 ° C, dripping ethanedioic acid regulates pH value to be 4, hydrolysis 1-1.5h, mica sheet is impregnated in the ethanol of 75% to stir and soaks 1-2h, then supersound washing 10-15min, then soak 0.5h with deionized water, finally be placed in baking oven dry 2h under 110 ° of C, grind for subsequent use;
(2) mica of above-mentioned preparation is added in the hydrolyzate of silane coupler kh550, bath temperature controls at 60-65 ° of C, then titanium dioxide and polyaminoester emulsion ultrasonic agitation 30-45min is added, filter, spend deionized water for several times, in constant temperature blast drying oven, under 90 ° of C, dry 2-3h is for subsequent use afterwards;
(3) glycine is added in flask with after the water-soluble solution of 13 times amount with silane coupler kh570, emulsifier op-10, dodecyl sodium sulfate and E44 epoxy resin, control bath temperature and slowly stir 3h under 80-85 ° of C, add stalk fibre and hollow glass microbead continuation stirring 10-15min again, then adding sodium hydroxide solution regulates pH value in neutral, again with high-shearing dispersion emulsifying machine by its emulsification, obtain stable modified aqueous epoxy resin emulsion;
(4) modified aqueous epoxy resin emulsion, propylene glycol alginate and polyacrylamide mixing prepared by modified micaceous, the step (3) step (2) prepared, add appropriate deionized water again and be diluted to the slurry of mass concentration at 0.5-0.6%, pull an oar after pulpboard is soaked, making beating is stopped when beating degree is 40-45 ° of SR, then slurry is put into fiber dissociation device, adding deionized water makes the concentration of slurry dissociate at 2-2.5%, obtains paper pulp suspension-turbid liquid for subsequent use;
(5) by paper pulp suspension-turbid liquid and the mixing of mica slurry, with electric power stirring rod strong stirring 10min, then continue the 15min that dissociates, carry out afterwards manufacturing paper with pulp, drying and can obtain insulating paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510739586.8A CN105336396A (en) | 2015-11-04 | 2015-11-04 | Transformer insulating material with good heat conduction effect |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510739586.8A CN105336396A (en) | 2015-11-04 | 2015-11-04 | Transformer insulating material with good heat conduction effect |
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| CN105336396A true CN105336396A (en) | 2016-02-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106589817A (en) * | 2016-12-07 | 2017-04-26 | 广东国利先进复合材料研发有限公司 | Heat conducting plate and preparation method thereof |
| CN108359222A (en) * | 2018-04-11 | 2018-08-03 | 合肥励仙电力工程有限公司 | A kind of preparation method of the insulating materials of for transformer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103260869A (en) * | 2010-12-17 | 2013-08-21 | 3M创新有限公司 | Electrical insulation material |
| CN104334797A (en) * | 2012-04-27 | 2015-02-04 | 帕孔有限两合公司 | Electrical insulating paper |
-
2015
- 2015-11-04 CN CN201510739586.8A patent/CN105336396A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103260869A (en) * | 2010-12-17 | 2013-08-21 | 3M创新有限公司 | Electrical insulation material |
| CN104334797A (en) * | 2012-04-27 | 2015-02-04 | 帕孔有限两合公司 | Electrical insulating paper |
Non-Patent Citations (1)
| Title |
|---|
| 李忠良: ""变质片麻岩云母纸及芳纶纤维云母纸"", 《中国优秀硕士学位论文全文数据库工程Ⅰ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106589817A (en) * | 2016-12-07 | 2017-04-26 | 广东国利先进复合材料研发有限公司 | Heat conducting plate and preparation method thereof |
| CN108359222A (en) * | 2018-04-11 | 2018-08-03 | 合肥励仙电力工程有限公司 | A kind of preparation method of the insulating materials of for transformer |
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Application publication date: 20160217 |
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