CN105369675A - Transformer-used insulation paper with low water absorption coefficient and small shrinking percentage - Google Patents
Transformer-used insulation paper with low water absorption coefficient and small shrinking percentage Download PDFInfo
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- CN105369675A CN105369675A CN201510739286.XA CN201510739286A CN105369675A CN 105369675 A CN105369675 A CN 105369675A CN 201510739286 A CN201510739286 A CN 201510739286A CN 105369675 A CN105369675 A CN 105369675A
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- deionized water
- mica
- silane coupler
- epoxy resin
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
- D21H15/10—Composite fibres
- D21H15/12—Composite fibres partly organic, partly inorganic
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
- D21H13/12—Organic non-cellulose fibres from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H13/14—Polyalkenes, e.g. polystyrene polyethylene
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/38—Inorganic fibres or flakes siliceous
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/38—Inorganic fibres or flakes siliceous
- D21H13/44—Flakes, e.g. mica, vermiculite
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/07—Nitrogen-containing compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/52—Epoxy resins
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/55—Polyamides; Polyaminoamides; Polyester-amides
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/71—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes
- D21H17/74—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes of organic and inorganic material
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/08—Dispersing agents for fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/38—Corrosion-inhibiting agents or anti-oxidants
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/48—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials
- H01B3/52—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials wood; paper; press board
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
Abstract
The invention discloses transformer-used insulation paper with a low water absorption coefficient and a small shrinking percentage. The insulation paper is prepared from, by weight, 0.6-0.7 part of a silane coupling agent kh 550, 6-8 parts of mica, 1-1.5 parts of glycine, 0.3-0.4 part of a silane coupling agent kh 570, 0.1-0.2 part of emulgator OP-10, 0.2-0.3 part of sodium dodecyl sulfate, 2-3 parts of E44 epoxy resin, 0.5-0.6 part of polyacrylamide, 500-550 parts of pulp boards, 2.8-3.4 parts of silicon carbide fibers, 1-1.5 parts of magnetization calcium, 1.2-1.5 parts of steelmaking slag powder, 3.2-3.5 parts of polyacrylonitrile fibers and a proper amount of deionized water. The preparation method of the insulation paper is simple, and the prepared insulation paper has a low water adsorption property and small shrinking percentage, is not prone to deformation, has good prospect when used for transformers, lowers potential safety hazards and is worthy of popularization.
Description
Technical field
The present invention relates to transformer technology field, particularly relate to the layer insulating paper that a kind of absorption coerfficient low-shrinkage is little.
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 materials in oil-immersed power transformer, and because run duration cannot be changed, the quality of its machinery and insulating properties directly decides the service 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 materials 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 materials 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 the layer insulating paper that a kind of absorption coerfficient low-shrinkage is little.
The present invention is achieved by the following technical solutions:
The layer insulating paper that absorption coerfficient low-shrinkage is little, 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 0.5-0.6, pulpboard 500-550, silicon carbide fibre 2.8-3.4, magnetization calcium 1-1.5, slag micro powder 1.2-1.5, polyacrylonitrile fibre 3.2-3.5, deionized water are appropriate.
The layer insulating paper that described a kind of absorption coerfficient low-shrinkage is little, be made up of following concrete steps:
(1) silane coupler kh550 is joined ethanol with 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 slag micro powder and silicon carbide fibre 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 magnetization calcium and polyacrylonitrile fibre 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 prepared by modified micaceous, the step (3) step (2) prepared and polyacrylamide mixing, 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 turbid liquid for subsequent use;
(5) by paper pulp 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 TENSILE STRENGTH of insulating paper, dielectric strength, the effect such as electric property and heat resistance, the slag micro powder added and silicon carbide fibre can reinforced insulation paper wear-resisting, corrosion-resistant, the performance of heat-resisting grade, the magnetization calcium added and polyacrylonitrile fibre can reduce the water imbibition of insulating paper, improve heat resistance, not easily contraction distortion, preparation method of the present invention is simple, the insulating paper of preparation has good low water absorbable, shrinkage factor is little, not yielding, for transformer, there is good prospect, reduce potential safety hazard, be worthy to be popularized.
Detailed description of the invention
The layer insulating paper that absorption coerfficient low-shrinkage is little, 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 0.5, pulpboard 500, silicon carbide fibre 2.8, magnetization calcium 1, slag micro powder 1.2, polyacrylonitrile fibre 3.2, deionized water are appropriate.
The layer insulating paper that described a kind of absorption coerfficient low-shrinkage is little, be made up of following concrete steps:
(1) silane coupler kh550 is joined ethanol with 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 slag micro powder and silicon carbide fibre ultrasonic agitation 30min is added, filter, 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 magnetization calcium and polyacrylonitrile fibre 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 prepared by modified micaceous, the step (3) step (2) prepared and polyacrylamide mixing, 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 turbid liquid for subsequent use;
(5) by paper pulp 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: breakdown voltage is 4KV, dielectric strength is 38KV/mm, the fire-retardant rank of insulating paper is V0 level, paper whiteness>=80%, dry tensile strength is 4.2KN/m, wet tensile (strength) is 0.48KN/m, suction head 52mm, air permeability is 20 ± 4s, and specific insulation is 0.9 × 10
6, sheet resistance is 4.2 × 10
4, dielectric constant is 5.5, and dielectric dissipation factor is 0.042.
Claims (2)
1. the layer insulating paper that an absorption coerfficient low-shrinkage is little, 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 0.5-0.6, pulpboard 500-550, silicon carbide fibre 2.8-3.4, magnetization calcium 1-1.5, slag micro powder 1.2-1.5, polyacrylonitrile fibre 3.2-3.5, deionized water are appropriate.
2. the layer insulating paper that a kind of absorption coerfficient low-shrinkage is little according to claim 1, is characterized in that, is made up of following concrete steps:
(1) silane coupler kh550 is joined ethanol with 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 slag micro powder and silicon carbide fibre 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 magnetization calcium and polyacrylonitrile fibre 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 prepared by modified micaceous, the step (3) step (2) prepared and polyacrylamide mixing, 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 turbid liquid for subsequent use;
(5) by paper pulp 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 |
|---|---|---|---|
| CN201510739286.XA CN105369675A (en) | 2015-11-04 | 2015-11-04 | Transformer-used insulation paper with low water absorption coefficient and small shrinking percentage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510739286.XA CN105369675A (en) | 2015-11-04 | 2015-11-04 | Transformer-used insulation paper with low water absorption coefficient and small shrinking percentage |
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| CN105369675A true CN105369675A (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510739286.XA Pending CN105369675A (en) | 2015-11-04 | 2015-11-04 | Transformer-used insulation paper with low water absorption coefficient and small shrinking percentage |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106758543A (en) * | 2016-12-30 | 2017-05-31 | 铜陵三佳变压器科技股份有限公司 | A kind of transformer of low water absorbable low-shrinkage aramid fiber based insulation paper and preparation method thereof |
| CN110565431A (en) * | 2019-09-04 | 2019-12-13 | 泰中特种纸有限公司 | Special paper with stable size and excellent recovery performance and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101058961A (en) * | 2006-12-13 | 2007-10-24 | 应建明 | Low-temperature thermal insulation paper, preparation method and application thereof |
| JP2012111063A (en) * | 2010-11-22 | 2012-06-14 | Eidai Co Ltd | Method of manufacturing wood fiberboard, and wood fiberboard |
| CN103628350A (en) * | 2013-07-23 | 2014-03-12 | 安徽博领环境科技有限公司 | Flame-resistant carbon-fiber electrothermal paper and preparation method thereof |
| CN103880326A (en) * | 2014-02-18 | 2014-06-25 | 南通中菱绝缘材料有限公司 | Mica paper and production method |
-
2015
- 2015-11-04 CN CN201510739286.XA patent/CN105369675A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101058961A (en) * | 2006-12-13 | 2007-10-24 | 应建明 | Low-temperature thermal insulation paper, preparation method and application thereof |
| JP2012111063A (en) * | 2010-11-22 | 2012-06-14 | Eidai Co Ltd | Method of manufacturing wood fiberboard, and wood fiberboard |
| CN103628350A (en) * | 2013-07-23 | 2014-03-12 | 安徽博领环境科技有限公司 | Flame-resistant carbon-fiber electrothermal paper and preparation method thereof |
| CN103880326A (en) * | 2014-02-18 | 2014-06-25 | 南通中菱绝缘材料有限公司 | Mica paper and production method |
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库》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106758543A (en) * | 2016-12-30 | 2017-05-31 | 铜陵三佳变压器科技股份有限公司 | A kind of transformer of low water absorbable low-shrinkage aramid fiber based insulation paper and preparation method thereof |
| CN110565431A (en) * | 2019-09-04 | 2019-12-13 | 泰中特种纸有限公司 | Special paper with stable size and excellent recovery performance and preparation method thereof |
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Application publication date: 20160302 |