CN101211678A - Single-side reinforced mediate amount epoxy glue mica tape and method of manufacture and its uses - Google Patents
Single-side reinforced mediate amount epoxy glue mica tape and method of manufacture and its uses Download PDFInfo
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- CN101211678A CN101211678A CNA2006101481856A CN200610148185A CN101211678A CN 101211678 A CN101211678 A CN 101211678A CN A2006101481856 A CNA2006101481856 A CN A2006101481856A CN 200610148185 A CN200610148185 A CN 200610148185A CN 101211678 A CN101211678 A CN 101211678A
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- mica tape
- mica
- glue
- side reinforced
- epoxy
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Abstract
The invention discloses a single reinforcing epoxy middle adhesive mica tape and a manufacturing method and applications thereof. The single reinforcing epoxy middle adhesive mica tape comprises sequentially an isolating layer, a mica paper, a glue adhesive layer and a reinforcing material layer. The manufacturing technology of the single reinforcing epoxy middle adhesive mica tape comprises sequentially the following steps: (1) arranging the glue adhesive layer on the reinforcing material layer through scraping coating, soak coating, or spray technology; (2) compounding the mica paper and the glue adhesive layer and baking; (3) overlapping sequentially the mica tape and isolating layer and compounding with the mica paper in step (2) through roll pressing; and (4) cutting into finished products. The product is applicable to prepare the main insulation structure belt of the electromagnetic winding in the electric motor stator of 6kV high voltage, wherein the single insulation thickness of the electromagnetic winding is 1.3mm. The product has the advantages that the mica content is obviously increased through the method of combining reducing content of the reinforcing material and utilizing high standard mica paper so as to improve the electrical insulation performance of the mica tape.
Description
Technical field
The present invention relates to a kind of main insulation material-mica tape and manufacture method and purposes that is used for generator, motor solenoid, relate in particular to glue mica tape and manufacture method and purposes in the main insulation material-single-side reinforced mediate amount epoxy of a kind of purposes solenoid in 6kV level high-voltage motor.
Background technology
Along with electric moter voltage grade, capacity improve constantly, the requirement of electrical machine insulation is also constantly being improved.At present, the insulating treatment process of large-size machine employing comprises VPI insulation system and many rubber mouldings pressure insulation system.With Westinghouse Electric (WH) is few glue continuous insulation system of representative, is characterized in the production efficiency height, and insulation can accomplish not have air gap substantially, good insulation preformance, but its production equipment needed thereby, material and management expectancy are higher; With GE company is many glue mica continuous insulation system of representative, and its insulation property and VPI insulation system are more or less the same, but production technology and equipment requirements are lower.Many glue insulation system is by improving bar insulation structure and moulding process, as increases interior equalizing press layer, vacuumize, hot-press solidifying or adopt vacuumize pitch hydraulic pressure, can reach the insulation property index of few glue insulation system.
The main insulation material that the big motor of present domestic high voltage uses is mainly many glue epoxy resin mica insulation system, and its mica content is 80g/m
2About.And the main insulation material that external big motor uses no matter many glue, few colloid system, general mica content is at 160g/m
2About.Improve mica content in solenoid main insulation material-mica tape, can guarantee that motor keeps favorable mechanical performance and electric property, particularly anti-thermal-electrical aging performance in the long-time running process.Therefore research and develop many glue, the low resin mica tape of high mica content, make the solenoid insulation system, improve its electrical insulation properties, thereby satisfy the demand that motor develops to high voltage, big capacity direction by VPI.
Summary of the invention
The object of the present invention is to provide glue mica tape in a kind of single-side reinforced mediate amount epoxy,, significantly improve mica content, thereby improve the mica tape electrical insulation properties by reducing supporting material content and the method for using high indicated weight mica paper to combine.
Another purpose of the present invention is to provide the manufacture method of glue mica tape in a kind of single-side reinforced mediate amount epoxy.
A further object of the present invention is to provide the purposes of glue mica tape in a kind of single-side reinforced mediate amount epoxy.
The present invention is achieved through the following technical solutions: glue mica tape in a kind of single-side reinforced mediate amount epoxy is made of separator, mica paper, adhesive layer and supporting material layer successively.
On the technique scheme basis, described mica tape thickness is 0.12-0.16mm, is best with 0.14mm.
On the technique scheme basis, described supporting material layer is a kind of with in high strength alkali-free glass cloth, polyester film, the polyimide film of electrician.
On the technique scheme basis, described mica paper is non-calcining high voltage muscovite paper, and its mica content is at 145-160g/m
2Between.
On the technique scheme basis, described adhesive layer is a kind of or its combination in epoxy type adhesive, epoxy/polyester imines type adhesive, epoxide modified polyester-type adhesive, the polyester-imide modified epoxy type adhesive.
On the technique scheme basis, described separator is a kind of or its combination in polyvinyl chloride (PVC) film, PETG (PET) film, polypropylene (PP) film, polyethylene (PE) film.
The manufacture method of glue mica tape in a kind of single-side reinforced mediate amount epoxy of the present invention, carry out according to the following step successively: (one) is adhesive layer on the supporting material layer by blade coating or dip-coating or spraying coating process; (2) mica paper and adhesive layer are cured after compound; (3) stack mica tape and separator back compound in regular turn by the mica paper in roll-in and the step (two); (4) cut finished product.
Glue mica tape adopts following several means to reach goal of the invention in the single-side reinforced mediate amount epoxy of the present invention: 1 reduces mica tape MR medium reinforcing material content; 2 use high indicated weight mica paper; 3 reduce adhesive content in the mica tape.Use the supporting material main purpose to be to improve the mechanical strength of mica tape in the mica tape, make mica tape can bear tension force in the process of holding, avoid mica tape to be subjected to than macrolesion, supporting material becomes the skeleton of insulation after curing.Simultaneously, adhesive has a significant effect to solidifying back solenoid insulation property in the mica tape.
Glue mica tape demonstrates following superiority in the single-side reinforced mediate amount epoxy of the present invention: change traditional mica tape two sides reinforcement into the single face reinforcement, increase a separator at another side, do not increase and keep under the prerequisite of sufficient mechanical strength at mica tape thickness, significantly improve mica content, thereby improve the electric property of mica tape, enable to be used to make 6kV level high-voltage motor stator solenoid Main Insulation Structure of Electric, separator wherein also has the technological effect of the mica tape of improvement.
The purposes of glue mica tape in a kind of single-side reinforced mediate amount epoxy of the present invention, adopt vacuum pressure impregnation (VPI) technology to make the Main Insulation Structure of Electric of stator solenoid in the 6kV level high-voltage motor, concrete steps are: be evacuated to 100Pa, kept 3-5 hour, the input impregnating varnish, keep vacuum 1 hour, and be forced into 0.5-0.6MPa, pressurize 5-6 hour after the releasing vacuum, pressure relief, drip lacquer, cured 8 hours, make solenoid at 150 ℃.
The present invention adopts in the single-side reinforced mediate amount epoxy glue mica tape to make stator solenoid Main Insulation Structure of Electric in the 6kV level high-voltage motor, and its monolateral insulation thickness is 1.3mm.The electricity function index of stator solenoid insulation system reaches the Grade A requirement of JB/T 56085-1996 " large ac machines mass-impregnation stator coil type coil end product quality grades " appendix B regulation, and thermal endurance class reaches the F level.
Description of drawings
Fig. 1 is the structural representation of glue mica tape in the single-side reinforced mediate amount epoxy;
Fig. 2 is the manufacturing process flow diagram of glue mica tape in the single-side reinforced mediate amount epoxy;
Fig. 3 is the combination process schematic diagram of separator and mica tape.
Code description among Fig. 1
1-separator 2-mica paper
3-adhesive layer 4-supporting material layer
Code description among Fig. 3
Glue mica tape in the 5-single-side reinforced mediate amount epoxy
The mica tape that 6-supporting material layer and mica paper are compounded to form
Embodiment
Embodiment 1
Shown in the structural representation of glue mica tape in Fig. 1 single-side reinforced mediate amount epoxy, the present invention is achieved through the following technical solutions: glue mica tape in a kind of single-side reinforced mediate amount epoxy is made of separator 1, mica paper 2, adhesive layer 3 and supporting material layer 4 successively.
On the technique scheme basis, described mica tape thickness is 0.12-0.16mm, is best with 0.14mm.
On the technique scheme basis, described supporting material layer 4 is a kind of with in high strength alkali-free glass cloth, polyester film, the polyimide film of electrician, and its density is 24g/m
2
On the technique scheme basis, described mica paper 2 is non-calcining high voltage muscovite paper, and its mica content is at 145-160g/m
2Between, its optimum value is 150g/m
2
On the technique scheme basis, described adhesive layer 4 is a kind of or its combination in epoxy type adhesive, epoxy/polyester imines type adhesive, epoxide modified polyester-type adhesive, the polyester-imide modified epoxy type adhesive, and epoxy type adhesive wherein is the bisphenol type epoxy adhesive.
Performance requirement to adhesive has following several respects: 1 adhesive itself has good electric property, heat resistance, mechanical performance etc.; 2 adhesive have favorable manufacturability, easily infiltration; 3 adhesive and impregnating resin should have good compatibility.Therefore, the present invention significantly improves mica content by reducing supporting material content and the method for using high indicated weight mica paper to combine, thereby improves the mica tape electrical insulation properties.
On the technique scheme basis, described separator 1 is a kind of or its combination in polyvinyl chloride (PVC) film, PETG (PET) film, polypropylene (PP) film, polyethylene (PE) film, and its thickness is 0.025mm.
Shown in the combination process schematic diagram of the manufacturing process flow diagram of glue mica tape in Fig. 2 single-side reinforced mediate amount epoxy and Fig. 3 separator and mica tape: the manufacture method of glue mica tape in a kind of single-side reinforced mediate amount epoxy of the present invention, carry out according to the following step successively: (one) is adhesive layer 3 on the supporting material layer 4 by blade coating or dip-coating or spraying coating process; (2) mica paper 2 and adhesive layer 3 are cured after compound, form mica tape 6; (3) stack mica tape and separator 1 back compound in regular turn by the mica paper 2 in roll-in and the step (two); (4) rolling, cut finished product, make glue mica tape 5 in the single-side reinforced mediate amount epoxy.
The purposes of glue mica tape in a kind of single-side reinforced mediate amount epoxy of the present invention, adopt vacuum pressure impregnation (VPI) technology to make the Main Insulation Structure of Electric of stator solenoid in the 6kV level high-voltage motor, concrete steps are: be evacuated to 100Pa, kept 3-5 hour, the input impregnating varnish, keep vacuum 1 hour, and be forced into 0.5-0.6MPa, pressurize 5-6 hour after the releasing vacuum, pressure relief, drip lacquer, cured 8 hours, make solenoid at 150 ℃.
The present invention adopts in the single-side reinforced mediate amount epoxy glue mica tape to make stator solenoid Main Insulation Structure of Electric in the 6kV level high-voltage motor, and its monolateral insulation thickness is 1.3mm.The electricity function index of stator solenoid insulation system reaches the Grade A requirement of JB/T 56085-1996 " large ac machines mass-impregnation stator coil type coil end product quality grades " appendix B regulation, and thermal endurance class reaches the F level.
After the adhesive preparation in the present embodiment, make adhesive layer 3, give the gluing of supporting material glass cloth by blade coating technology, glass cloth and mica paper 2 cure after compound, make glue mica tape in the high mica content single-side reinforced mediate amount epoxy that obtains having structure shown in Figure 1 after mica tape and separator 1 compound the cutting by roll-in again.
The electric property and the heat resistance of table 1F level 6kV high-voltage motor solenoid insulation system
Make the solenoid insulation system by VPI technology, main processes and parameter are as follows: be evacuated to 100Pa, kept 3-5 hour, the input impregnating varnish, keep vacuum 1 hour, and be forced into 0.5-0.6MPa, pressurize 5-6 hour after the releasing vacuum, pressure relief is dripped lacquer, cures 8 hours.The electric property of the solenoid insulation system by above-mentioned prepared and heat resistance are according to JB/T 56085-1996 " large ac machines mass-impregnation stator coil type coil end product quality grades " appendix B examination, and test result sees table 1 for details.
Claims (8)
1. glue mica tape in the single-side reinforced mediate amount epoxy is made of separator, mica paper, adhesive layer and supporting material layer successively.
2. glue mica tape in the single-side reinforced mediate amount epoxy according to claim 1 is characterized in that: described mica tape thickness is 0.12-0.16mm.
3. glue mica tape in the single-side reinforced mediate amount epoxy according to claim 1 and 2 is characterized in that: described supporting material layer is a kind of with in high strength alkali-free glass cloth, polyester film, the polyimide film of electrician.
4. glue mica tape in the single-side reinforced mediate amount epoxy according to claim 1 and 2 is characterized in that: described mica paper is non-calcining high voltage muscovite paper, and its mica content is at 145-160g/m
2Between.
5. glue mica tape in the single-side reinforced mediate amount epoxy according to claim 1 and 2 is characterized in that: described adhesive layer is a kind of or its combination in epoxy type adhesive, epoxy/polyester imines type adhesive, epoxide modified polyester-type adhesive, the polyester-imide modified epoxy type adhesive.
6. glue mica tape in the single-side reinforced mediate amount epoxy according to claim 1 and 2 is characterized in that: described separator is a kind of or its combination in polyvinyl chloride film, pet film, polypropylene film, the polyethylene film.
7. at the manufacture method of glue mica tape in the described single-side reinforced mediate amount epoxy of one of claim 1 to 6, carry out according to the following step successively: (one) is adhesive layer on the supporting material layer by blade coating or dip-coating or spraying coating process; (2) mica paper and adhesive layer are cured after compound; (3) stack mica tape and separator back compound in regular turn by the mica paper in roll-in and the step (two); (4) cut finished product.
8. according to the purposes of glue mica tape in the described single-side reinforced mediate amount epoxy of one of claim 1 to 6, it is characterized in that: be used for preparing 6kV level high-voltage motor stator solenoid Main Insulation Structure of Electric, monolateral insulation thickness is 1.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101481856A CN101211678A (en) | 2006-12-28 | 2006-12-28 | Single-side reinforced mediate amount epoxy glue mica tape and method of manufacture and its uses |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101481856A CN101211678A (en) | 2006-12-28 | 2006-12-28 | Single-side reinforced mediate amount epoxy glue mica tape and method of manufacture and its uses |
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|---|---|
| CN101211678A true CN101211678A (en) | 2008-07-02 |
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| CNA2006101481856A Pending CN101211678A (en) | 2006-12-28 | 2006-12-28 | Single-side reinforced mediate amount epoxy glue mica tape and method of manufacture and its uses |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2418079A1 (en) * | 2010-08-11 | 2012-02-15 | Hitachi Ltd. | Dry mica tape and instruction coils manufactured therewith |
| CN102514345A (en) * | 2011-12-12 | 2012-06-27 | 江苏冰城电材股份有限公司 | Manufacturing method of mica tape |
| CN104354451A (en) * | 2011-12-12 | 2015-02-18 | 江苏冰城电材股份有限公司 | Manufacturing method of mica tape for high-voltage generator and high-voltage motor |
| CN107527696A (en) * | 2017-08-30 | 2017-12-29 | 株洲时代新材料科技股份有限公司 | A kind of single-face polyester film adhesive-contented mica tapes and preparation method thereof and the application in high voltage wind-driven generator |
| CN109291579A (en) * | 2018-09-26 | 2019-02-01 | 广州顺维电子科技有限公司 | A kind of strong insulating materials and preparation method thereof |
| WO2022057253A1 (en) * | 2020-09-21 | 2022-03-24 | 湖北平安电工科技股份公司 | Mica tape capable of being wound at any length in ultra-wide manner, and manufacturing method therefor |
| CN114496349A (en) * | 2022-02-09 | 2022-05-13 | 浙江荣泰电工器材股份有限公司 | Ultra-long high-temperature-resistant mica tape and preparation method thereof |
-
2006
- 2006-12-28 CN CNA2006101481856A patent/CN101211678A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2418079A1 (en) * | 2010-08-11 | 2012-02-15 | Hitachi Ltd. | Dry mica tape and instruction coils manufactured therewith |
| US8669473B2 (en) | 2010-08-11 | 2014-03-11 | Hitachi, Ltd. | Dry mica tape and insulation coils manufactured therewith |
| CN102514345A (en) * | 2011-12-12 | 2012-06-27 | 江苏冰城电材股份有限公司 | Manufacturing method of mica tape |
| CN104354451A (en) * | 2011-12-12 | 2015-02-18 | 江苏冰城电材股份有限公司 | Manufacturing method of mica tape for high-voltage generator and high-voltage motor |
| CN107527696A (en) * | 2017-08-30 | 2017-12-29 | 株洲时代新材料科技股份有限公司 | A kind of single-face polyester film adhesive-contented mica tapes and preparation method thereof and the application in high voltage wind-driven generator |
| CN109291579A (en) * | 2018-09-26 | 2019-02-01 | 广州顺维电子科技有限公司 | A kind of strong insulating materials and preparation method thereof |
| CN109291579B (en) * | 2018-09-26 | 2021-09-14 | 浙江格兰电气有限公司 | Strong insulating material and preparation method thereof |
| WO2022057253A1 (en) * | 2020-09-21 | 2022-03-24 | 湖北平安电工科技股份公司 | Mica tape capable of being wound at any length in ultra-wide manner, and manufacturing method therefor |
| CN114496349A (en) * | 2022-02-09 | 2022-05-13 | 浙江荣泰电工器材股份有限公司 | Ultra-long high-temperature-resistant mica tape and preparation method thereof |
| CN114496349B (en) * | 2022-02-09 | 2023-09-26 | 浙江荣泰电工器材股份有限公司 | Ultra-long high-temperature-resistant mica tape and preparation method thereof |
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Open date: 20080702 |