CN108867152A - A kind of transformer insulating paper and preparation method thereof - Google Patents
A kind of transformer insulating paper and preparation method thereof Download PDFInfo
- Publication number
- CN108867152A CN108867152A CN201810252838.8A CN201810252838A CN108867152A CN 108867152 A CN108867152 A CN 108867152A CN 201810252838 A CN201810252838 A CN 201810252838A CN 108867152 A CN108867152 A CN 108867152A
- Authority
- CN
- China
- Prior art keywords
- epoxy resin
- insulating board
- insulating
- insulating paper
- transformer
- 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.)
- Pending
Links
Classifications
-
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F13/00—Making discontinuous sheets of paper, pulpboard or cardboard, or of wet web, for fibreboard production
-
- 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
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/385—Oxides, hydroxides or carbonates
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/62—Macromolecular organic compounds or oligomers thereof obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- D21H21/143—Agents preventing ageing of paper, e.g. radiation absorbing substances
-
- 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
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/40—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes epoxy resins
-
- 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 a kind of transformer insulating papers, and including insulating board and coated in the epoxy resin on insulating board, the epoxy resin is coated in insulating board surface in form diamond checks, and the epoxy resin is interior mixed with reinforcing material；The invention also discloses the preparation method of above-mentioned transformer insulating paper, include the steps that coating epoxy resin on the preparation of epoxy resin, the preparation of insulating board and insulating board.The beneficial effects of the invention are as follows combine dipping and the not advantage of varnish(ed) paper, epoxy resin is coated on the surface of wood fibre insulating paper, the antiageing effect of insulation board is good, and the oil absorbency of insulating paper is big, reach 20%, aerial breakdown strength is higher than the 25% of IEC minimum standard；Four acicular type zinc oxide crystal whisker is mixed in epoxy resin, the stomata of material internal increased significantly, and four acicular type zinc oxide crystal whisker is mutually lapped, and form continuous network, generate active influence to the heat of material, electrical property.
Description
Technical field
The present invention relates to a kind of transformer insulated technical field, specially a kind of transformer insulating paper and preparation method thereof.
Background technique
With transformer industrial expansion, the update speed of domestic and international transformer is gradually accelerated.Flourishing work in recent years
Industry country Transformer low pressure winding oneself through substantially foil, even if proofing technique original in high-voltage winding is also
Gradually replaced by not impregnation technology.Domestic related producer has successively introduced box type transformer equipment from states such as Switzerland, Norway.Foil
Formula transformer and do not impregnate key insulating materials used in winding-diamond dotted insulating paper but need to from external import, rely on state
Outer technology spends a large amount of foreign exchanges.
Epoxy adhesive cures system (resin, curing agent, catalyst, compound), will generally combine storage
Phase, the factors such as heat resistance and knot particular/special requirement for dispensing glue.At present, both at home and abroad general latent curing agent such as dicyandiamide, ketone it is liquor-saturated,
Ether is liquor-saturated etc., the latency principle of these types of curing agent, is curing agent at normal temperature in the short time insoluble in epoxy resin or general
Solvent, and when temperature is increased to a certain value, it is gradually dissolved in the cured resin of institute, and start curing reaction therewith.This solidification
System curing agent is scattered among adhesive (glue, glue film) with the granular state of grain husk.Such a heterogeneous blending polymer body
, in manufacture, use and storage process, there is curing agent sedimentation in system, disperses phenomena such as uneven and is inevitable.And it is this
Curing system solidification temperature is higher than the drying temperature of transformer, is not easy in intermediate temperature setting.Existing adhesive still has storage
The problems such as phase, heat resistance.
Diamond dotted insulating paper be will be modified special epoxy resin present form diamond checks be coated in electrician's mylar on bake
At the insulating materials of plate cure stage.But in order to reach the sealing performance of impregnated insulating paper, to the process of coating adhesive
More stringent requirements are proposed, is unfavorable for producing, in addition, the breakdown voltage of mylar is relatively low.
After immersion oil, the fiber gap in insulating board fiber is filled up insulating board by oil, eliminates the gas of gap generation
Gap improves the electrical strength of its insulation.
Summary of the invention
The object of the invention is that providing a kind of transformer insulating paper and its control method to solve the above-mentioned problems.
The present invention be achieved through the following technical solutions above-mentioned purpose, a kind of transformer insulating paper, including insulating board and
Coated in the epoxy resin on insulating board, the epoxy resin is coated in insulating board surface, the asphalt mixtures modified by epoxy resin in form diamond checks
Mixed with reinforcing material in rouge.
Preferably, the reinforcing material is four acicular type zinc oxide crystal whisker.
Preferably, there is spicule, 5-20 μm of the needle-shaped body length on the four acicular type zinc oxide crystal whisker.
Preferably, four acicular type zinc oxide crystal whisker volume fraction is 10% in the epoxy resin.
Preferably, the insulating board is made of softwood pulp, the softwood pulp fibre length 2.19-2.34mm, fine
26.4-31.2 μm of width of dimension.
Preferably, the insulating board is described to add using tri- kinds of JX mixing starched of Canada HY, Russia EKB and Chile
Put on airs HY：Russian EKB：The proportion of Chilean JX is 6:3:1.
Preferably, the epoxy resin on insulating board with a thickness of 0.01-0.015mm.
The present invention also provides the preparation methods of above-mentioned transformer insulating paper, include the following steps：
(1) four acicular type zinc oxide crystal whisker surface is modified；
(2) the modified four acicular type zinc oxide crystal whisker in surface is added in extracting epoxy resin, is thoroughly mixed, and solidifies；Ultrasound
Wave decentralized processing 60min is added curing agent, continues to stir, pour into from molding jig, vacuum defoamation, room temperature precuring 1h, 80 take the photograph
Family name's degree solidifies 3h, demoulding, sanding and polishing；
(3) prepared by insulating board, will insulation slurry impregnate after discongest, be beaten, hot pressing, finally dry insulating board；
(4) by treated, epoxy resin is coated in insulating paper surface.
Preferably, in the step (1), four acicular type zinc oxide crystal whisker is added after silane coupling agent is diluted with ethyl alcohol, stirs
15min is mixed, ultrasonic wave disperses 60min, and filtering is dried in 100 degrees Celsius.
Preferably, in the step (3), soaked insulation slurry is discongested first, then slurry is beaten,
After the pulp dilution after mashing, dehydration forming obtains insulation l Water Paper page, hot-pressing processing is carried out to insulation l Water Paper page, when hot pressing
Between 12min, obtain dry insulating board.
The beneficial effects of the invention are as follows：
(1) dipping and the not advantage of varnish(ed) paper are combined, coats asphalt mixtures modified by epoxy resin on the surface of wood fibre insulating paper
The antiageing effect of rouge, insulation board is good, and the oil absorbency of insulating paper is big, reaches 20%, aerial breakdown strength is higher than IEC most
The 25% of substandard；Four acicular type zinc oxide crystal whisker is mixed in epoxy resin, the stomata of material internal increased significantly, four needle-shaped oxygen
Change zinc whisker to be mutually lapped, form continuous network, active influence is generated to the heat of material, electrical property；
(2) when four acicular type zinc oxide crystal whisker refers to that score is 10%, the thermal conductivity of adhesive is 0.68W/ (m ° of K), phase
Nearly 3 times are improved than epoxy resin-base；
(3) insulating board is impregnated with a large amount of oil, is easy to produce wrinkle, and four acicular type zinc oxide crystal whisker connects each other in epoxy resin
It connects, further improves the wrinkling of insulating board；
(4) performance of Canada HY slurry is best.For the optimal cost performance of optimization, Canadian HY, Russian EKB are compared,
Influence of tri- kinds of the Chilean JX slurry different ratios to insulating board performance, comprehensive analysis work as HY:EKB:JX is 6:3:When 1, insulation
The performance of cardboard is preferable.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
A kind of transformer insulating paper, including insulating board and coated in the epoxy resin on insulating board, epoxy resin is in
Form diamond checks are coated in insulating board surface, and with a thickness of 0.01-0.015mm, epoxy resin is interior mixed with reinforcing material.
Epoxy resin (EP) has the characteristics such as bonding force is strong, electrical insulation capability is good, stability is strong, cure shrinkage is small, because
This is widely used in the fields such as aerospace, electric, but epoxy resin as a kind of excellent encapsulating material and baseplate material
Thermal conductivity it is lower (0.18W/ (m ° of K)), heat dissipation performance is poor.Addition has the four-needle-like zinc oxide of stereochemical structure in resin
Whisker, epoxy resin belong to amorphous polymer, and heat transfer relies primarily on the vibration between interior atoms, and heating conduction is poor；It is brilliant
The heat transfer of palpus then relies primarily on lattice vibration, i.e., based on phonon vibration, heating conduction is preferable.For four-needle-like zinc oxide crystalline substance
Palpus/epoxy resin composite material, heat transfer are coefficient as a result, if four needle-shaped oxygen dependent on polymer and filler lattice vibration
Change zinc whisker mutually to overlap in resin matrix, forms thermal conducting path, then the thermal conductivity of composite material can be increased significantly.
Being able to achieve in the case of low volume content is filled after addition four acicular type zinc oxide crystal whisker just can effectively improve leading for resin
Hot property, while the electrical insulation capability of polymer is kept, the processability of resin can be largely effected on by overcoming a large amount of inorganic filler
Can, and the drawbacks of increase cost.There is spicule, 5-20 μm of needle-shaped body length on four acicular type zinc oxide crystal whisker.
During preparing above-mentioned insulating paper, epoxy resin, insulating board are prepared respectively, then again coats epoxy resin
On insulating board.
Adding the four acicular type zinc oxide crystal whisker in epoxy resin needs first by surface treatment.When processing, by silane idol
Four acicular type zinc oxide crystal whisker is added after being diluted with ethyl alcohol in connection agent, stirs 15min, and ultrasonic wave disperses 60min, and filtering is Celsius in 100
Degree drying.The four acicular type zinc oxide crystal whisker after surface treated is added in subsequent extracting epoxy resin, is thoroughly mixed, ultrasonic wavelength-division
Processing 60min is dissipated, curing agent is added, continues to stir, pour into from molding jig, vacuum defoamation, room temperature precuring 1h, 80 degrees Celsius
Solidify 3h, demoulding, sanding and polishing.
With the increase of four acicular type zinc oxide crystal whisker content, the thermal conductivity of composite material is consequently increased.With four needle-shaped
ZnOw content gradually increases, and starts mutually overlap joint in resin matrix between whisker and whisker, and row is at heat conduction network, and four
The thermal conductivity of needle-shape zinc oxide crystal whisker composite material starts obviously to rise.When four acicular type zinc oxide crystal whisker volume fraction is in sample
When 10%, the thermal conductivity of sample is 0.68W/ (m ° of K), improves nearly 3 times compared to epoxy resin-base.
Insulating paper is made of softwood pulp, softwood pulp fibre length 2.19-2.34mm, and 26.4-31.2 μm of fiber width.
The length of fiber refers to the weight average fiber length of fibre length, and width refers to the arithmetic mean width of fiber, Canada
The fibre length longest of HY slurry is 2.34mm, and the shorter fibre length of Chilean JX is 2.19mm；With regard to fiber width, Chilean JX slurry
The width of fiber is most wide, is 31.2 μm, and the length-width ratio of Canadian HY slurry is maximum, up to 88.6, it is considered that, the big fibre of length-width ratio
Dimension, is interweaved often between fiber in unit area when paper, and fiber distribution is fine and closely woven, and paper strength is high.Ash content indicates
Slurry remaining minerals, content of ashes after high-temp combustion and ashing is very big on the influence of insulating board quality, generally, slurry ash
Divide content lower, the impure amount of insulating board is fewer.The degree of polymerization of paper pulp is the average length of cellulose molecular chain in slurry
Reaction, the degree of polymerization is higher, and the strand of cellulose is longer, and the antiageing effect of insulating board is better.The ash content of Canadian HY slurry
Content is minimum, is 0.32%, degree of polymerization highest is the slurry of relatively good insulating board up to 1365.Add when edge cardboard uses absolutely
Put on airs tri- kinds of JX mixing starched of HY, Russia EKB and Chile, and Canada HY：Russian EKB：The proportion of Chilean JX is 6:
3:When 1, the performance of insulating board is preferable, and oil absorbency is big, reaches 20%.
When prepared by insulating board, soaked insulation slurry is discongested first, then slurry is beaten, will be beaten
After pulp dilution afterwards, dehydration forming obtains insulation l Water Paper page, carries out hot-pressing processing, hot pressing time to insulation l Water Paper page
12min obtains dry insulating board.
Insulating paper made of taking carries out the measurement of breakdown voltage, according to national standards GB/T1408, using symmetrical stainless steel
Cylinder electrode, diameter 25mm, specimen finish 50mm measure breakdown voltage value of the sample in air and oil respectively.
The experimental results showed that it can be complete after effect and the electric field strength of insulating board meet or exceed certain certain value
Lose insulation performance and conductive, electric field strength at this time is known as the breakdown strength of insulating board, and the breakdown in insulating paper leaf fat is strong
Degree is higher than IEC standard much higher than the breakdown strength in air, the breakdown strength of the insulating paper in air and in the oil.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. a kind of transformer insulating paper, it is characterised in that：Including insulating board and coated in the epoxy resin on insulating board, institute
It states epoxy resin and is coated in insulating board surface in form diamond checks, the epoxy resin is interior mixed with reinforcing material.
2. a kind of transformer insulating paper according to claim 1, it is characterised in that：The reinforcing material is four needle-shaped oxidations
Zinc whisker.
3. a kind of transformer insulating paper according to claim 2, it is characterised in that：Have on the four acicular type zinc oxide crystal whisker
There are spicule, 5-20 μm of the needle-shaped body length.
4. a kind of transformer insulating paper according to claim 3, it is characterised in that：Four needle-shaped oxidation in the epoxy resin
Zinc whisker is 10%.
5. a kind of transformer insulating paper according to claim 1, it is characterised in that：The insulating board is by softwood pulp system
At, the softwood pulp fibre length 2.19-2.34mm, 26.4-31.2 μm of fiber width.
6. a kind of transformer insulating paper according to claim 5, it is characterised in that：The insulating board is using Canada
The mixing of tri- kinds of JX slurries of HY, Russia EKB and Chile, the Canada HY：Russian EKB：The proportion of Chilean JX is 6:3:1.
7. a kind of transformer insulating paper according to claim 1, it is characterised in that：The epoxy resin is on insulating board
With a thickness of 0.01-0.015mm.
8. a kind of preparation method of the described in any item transformer insulating papers of claim 1-7, it is characterised in that：Including walking as follows
Suddenly：
(1) four acicular type zinc oxide crystal whisker surface is modified；
(2) the modified four acicular type zinc oxide crystal whisker in surface is added in extracting epoxy resin, is thoroughly mixed, and solidifies；Ultrasonic wavelength-division
Processing 60min is dissipated, curing agent is added, continues to stir, pour into from molding jig, vacuum defoamation, room temperature precuring 1h, 80 degrees Celsius
Solidify 3h, demoulding, sanding and polishing；
(3) prepared by insulating board, will insulation slurry impregnate after discongest, be beaten, hot pressing, finally dry insulating board；
(4) by treated, epoxy resin is coated in insulating paper surface.
9. a kind of preparation method of transformer insulating paper according to claim 8, it is characterised in that：In the step (1),
Four acicular type zinc oxide crystal whisker is added after silane coupling agent is diluted with ethyl alcohol, stirs 15min, ultrasonic wave disperses 60min, it filters,
It is dried in 100 degrees Celsius.
10. a kind of preparation method of transformer insulating paper according to claim 8, it is characterised in that：The step (3)
In, soaked insulation slurry is discongested first, then slurry is beaten, after the pulp dilution after mashing, dehydration
Molding obtains insulation l Water Paper page, carries out hot-pressing processing to insulation l Water Paper page, hot pressing time 12min obtains dry insulating paper
Plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810252838.8A CN108867152A (en) | 2018-03-26 | 2018-03-26 | A kind of transformer insulating paper and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810252838.8A CN108867152A (en) | 2018-03-26 | 2018-03-26 | A kind of transformer insulating paper and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108867152A true CN108867152A (en) | 2018-11-23 |
Family
ID=64326411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810252838.8A Pending CN108867152A (en) | 2018-03-26 | 2018-03-26 | A kind of transformer insulating paper and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108867152A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114203416A (en) * | 2021-11-19 | 2022-03-18 | 南通日芝电力材料有限公司 | Insulating paper with strong coating property for inner framework of amorphous transformer coil |
| CN115305740A (en) * | 2022-08-31 | 2022-11-08 | 国网黑龙江省电力有限公司电力科学研究院 | Heat-conducting insulating material for high-voltage dry-type direct-current sleeve and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201478079U (en) * | 2009-07-31 | 2010-05-19 | 杭州钱江电气集团股份有限公司 | Amorphous alloy distribution transformer and inner core thereof |
| CN105336393A (en) * | 2015-11-04 | 2016-02-17 | 铜陵三佳变压器有限责任公司 | Transformer insulation paper with good moistureproof flame retardation effect |
| CN205080992U (en) * | 2015-11-20 | 2016-03-09 | 济南清河电气有限公司 | Coil for oil -immersed transformer |
| CN105484103A (en) * | 2015-10-29 | 2016-04-13 | 国网电力科学研究院武汉南瑞有限责任公司 | Preparation method for epoxy-resin-combined modified vegetable-fiber insulation paper |
| CN106471035A (en) * | 2014-07-02 | 2017-03-01 | Dic株式会社 | Electronic material composition epoxy resin, its solidfied material and electronic component |
| CN107779152A (en) * | 2017-11-09 | 2018-03-09 | 瑞安复合材料(深圳)有限公司 | Pre- impregnation composition epoxy resin, diamond dotted insulating paper and their preparation method |
-
2018
- 2018-03-26 CN CN201810252838.8A patent/CN108867152A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201478079U (en) * | 2009-07-31 | 2010-05-19 | 杭州钱江电气集团股份有限公司 | Amorphous alloy distribution transformer and inner core thereof |
| CN106471035A (en) * | 2014-07-02 | 2017-03-01 | Dic株式会社 | Electronic material composition epoxy resin, its solidfied material and electronic component |
| CN105484103A (en) * | 2015-10-29 | 2016-04-13 | 国网电力科学研究院武汉南瑞有限责任公司 | Preparation method for epoxy-resin-combined modified vegetable-fiber insulation paper |
| CN105336393A (en) * | 2015-11-04 | 2016-02-17 | 铜陵三佳变压器有限责任公司 | Transformer insulation paper with good moistureproof flame retardation effect |
| CN205080992U (en) * | 2015-11-20 | 2016-03-09 | 济南清河电气有限公司 | Coil for oil -immersed transformer |
| CN107779152A (en) * | 2017-11-09 | 2018-03-09 | 瑞安复合材料(深圳)有限公司 | Pre- impregnation composition epoxy resin, diamond dotted insulating paper and their preparation method |
Non-Patent Citations (2)
| Title |
|---|
| 周柳等: "氧化锌晶须/环氧树脂导热绝缘复合材料的制备与性能", 《高分子材料科学与工程》 * |
| 陈启杰等: "不同针叶木浆对变压器绝缘纸板性能的影响", 《造纸装备及材料》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114203416A (en) * | 2021-11-19 | 2022-03-18 | 南通日芝电力材料有限公司 | Insulating paper with strong coating property for inner framework of amorphous transformer coil |
| CN114203416B (en) * | 2021-11-19 | 2024-03-12 | 南通日芝电力材料有限公司 | Insulating paper with strong coating property for inner framework of amorphous transformer coil |
| CN115305740A (en) * | 2022-08-31 | 2022-11-08 | 国网黑龙江省电力有限公司电力科学研究院 | Heat-conducting insulating material for high-voltage dry-type direct-current sleeve and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105568774B (en) | A kind of high-performance oil-immersed insulating paper and preparation method and application | |
| CN111546722B (en) | Reinforced high-thermal-conductivity mica tape and preparation method thereof | |
| CN108867152A (en) | A kind of transformer insulating paper and preparation method thereof | |
| CN102953288B (en) | A kind of PPTA-pulp strengthens the preparation method of polyimide fiber paper | |
| CN109004153A (en) | A kind of ultrathin electrodes support type anodic aluminium oxide membrane and preparation method thereof | |
| CN106531288B (en) | A kind of low resin mica tape and preparation method thereof | |
| US4456657A (en) | Metal-clad laminate adapted for printed circuits | |
| CN110158346A (en) | A kind of polyimide fiber paper based insulation material and preparation method thereof | |
| US6017627A (en) | High voltage electric appliance | |
| US4576856A (en) | Reconstituted mica materials, reconstituted mica prepreg materials, reconstituted mica products and insulated coils | |
| CN107354808A (en) | Aramid fiber/polyimide fiber composite-insulating paper of excellent performance and preparation method thereof is worn in a kind of resistance | |
| CN108659411A (en) | A kind of calcium silicates filled fluoropolymer polymer composites and preparation method thereof | |
| CN109294501A (en) | A kind of graphite oxide alkenyl waterproof insulation glue | |
| CN113292755B (en) | Method for preparing membrane based on evaporation self-assembly | |
| CN106531374B (en) | Fire retardant insulating composite and its preparation technology | |
| Li et al. | Preparation and properties of glass fiber/plant fiber reinforced cementitious composites | |
| CN103993509A (en) | Stable-quality zirconia-supported air filter paper for automobiles, and making method thereof | |
| JPS6022445B2 (en) | Laminated mica material and laminated mica prepreg material | |
| CN110499669A (en) | A kind of environment-protection fiber paper and preparation method thereof | |
| JPS6022444B2 (en) | Laminated mica materials, laminated mica prepreg materials and laminated mica products | |
| JPS6313288B2 (en) | ||
| SU744009A1 (en) | Prepreg | |
| FI61365B (en) | ELEKTRISKT ISOLERINGSMATERIAL PAO CELLULOSA-BASIS OCH PROCESS FOER FRAMSTAELLNING DAERAV | |
| JPS5861605A (en) | Insulated coil | |
| CN105355269A (en) | Composite insulation paper containing tencel fiber used for transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181123 |