CN103514989A - High heat resistance type weldable polyesterimide enameled wire and production method thereof - Google Patents
High heat resistance type weldable polyesterimide enameled wire and production method thereof Download PDFInfo
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- CN103514989A CN103514989A CN201210199981.8A CN201210199981A CN103514989A CN 103514989 A CN103514989 A CN 103514989A CN 201210199981 A CN201210199981 A CN 201210199981A CN 103514989 A CN103514989 A CN 103514989A
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- insulating
- fire resistance
- lacquer layer
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Abstract
The invention discloses a high heat resistance type weldable polyesterimide enameled wire. The high heat resistance type weldable polyesterimide enameled wire comprises a conductor core, and an insulating coating for covering the conductor core. The insulating coating is made from imide-modified polyesterimide insulating varnish through high-temperature baking. The polyesterimide insulating varnish comprises the following components: polyesterimide resin 22wt%-39wt%, and a mixed solvent of cresol and xylene 61wt%-78wt%. The high heat resistance type weldable polyesterimide enameled wire provided in the invention has advantages of high heat resistance and high electrical performance, the thermal level can reach up to a level of 200, the softening breakdown temperature is in the range from 290 DEC G to 330 DEC G, and the direct welding function can be realized at the same time, the mechanical process of the chemical stripping process can be omitted, and the coil winding machining efficiency can be greatly improved. Meanwhile, the invention also discloses a production method of the above-mentioned high heat resistance type weldable polyesterimide enameled wire.
Description
Technical field
The present invention relates to insulated wire cable, particularly relate to a kind of high-fire resistance and can weld insulating lacquer layer, and production method.
Background technology
Existing solderability enamelled wire product thermal level is generally 180 grades, and scolding tin minimum temperature is 450 ℃, and softening to puncture minimum temperature be 265 ℃, and long term thermal life-span and electrical insulation capability are on the low side, can not meet the instructions for use of coffee machine self-priming magnetic water pump.The composite enamelled wire of existing thermal level higher (as more than 200 grades), cut through temperature can reach more than 320 ℃, but does not meet the directly requirement of welding of end line, and production and processing efficiency is lower.
Summary of the invention
For above-mentioned prior art present situation, first technical problem to be solved by this invention is, provide a kind of high-fire resistance can weld insulating lacquer layer, so that enamelled wire is when having high-fire resistance and high electrical performance, there is solderability, to improve Downstream processing producer's production efficiency, reduced client production cost.
Second technical problem to be solved by this invention is, provides a kind of above-mentioned high-fire resistance can weld the production method of insulating lacquer layer.
The present invention solves the technical scheme that above-mentioned first technical problem adopts: a kind of high-fire resistance can weld insulating lacquer layer, comprise conductor core wire and be wrapped in the insulating coating on described conductor core wire, described insulating coating is cured and is formed by imine modified polyester-imide insulating varnish high temperature, and the component of described polyester-imide insulating varnish and the percentage by weight of each component are: the mixed solvent 61%～78% of polyester imine resin 22%～39%, cresols and dimethylbenzene.
In an embodiment, the percentage by weight of described cresols and described dimethylbenzene is 55%～65%: 35%～45% therein.
In an embodiment, described conductor core wire is copper cash, copper alloy wire or aluminum steel therein.
In an embodiment, the diameter of described enamelled wire is 0.016～0.600mm therein.
In an embodiment, the thickness of described insulating coating is 1 grade or 2 grades of film thicknesses therein.
The present invention solves the technical scheme that above-mentioned second technical problem adopt: the production method that a kind of high-fire resistance as described in above-mentioned any one embodiment can weld insulating lacquer layer, in turn includes the following steps:
(1) line base draws the bare conductor heart yearn that forms required size through pressure processing;
(2) bare conductor heart yearn cleans through the pure water of 60～80 ℃, with the speed of 300～800m/min, introduces in annealing furnace and carries out protectiveness bright annealing;
(3) surperficial with the quick cooling bare conductor heart yearn of pure water of 60～80 ℃, then dry up fast bare conductor heart yearn surface moisture with cold air, then by the adsorption moisture of drying baker flash baking bare conductor heart yearn remained on surface;
(4) bare conductor heart yearn is incorporated into baker japanning district with the speed of 300～800m/min, by felt or mould, on bare conductor heart yearn, applies by imine modified polyester-imide insulating varnish;
(5) enamelled wire goes out after baker coolingly, obtains high-fire resistance and can weld insulating lacquer layer.
In an embodiment, in step (3), the bake out temperature of described drying baker is 200～300 ℃ therein.
In an embodiment, in step (4), described polyester-imide insulating varnish utilizes felt or mould repeatedly to apply 5～12 times according to film thickness therein, and every painting is once cured once.
Compared with prior art, high-fire resistance provided by the present invention can weld insulating lacquer layer and has following beneficial effect:
(1) can not weld characteristic with 220 grades of above single coatings or composite enamelled wire compares, high-fire resistance provided by the present invention can weld insulating lacquer layer and have 490～510 ℃ of direct tin sticky welding functions, omit machinery or chemical depainting operation, greatly improved coil windings working (machining) efficiency.
(2) compare with the high heat-stage 180 of straight weldering enamelled wire, the thermal level that high-fire resistance provided by the present invention can weld insulating lacquer layer can reach 200 grades, temperature index be 200 and more than, caloric impact temperature meet 220 ℃ and more than.
(3) compare with 265～280 ℃ of the highest cut through temperatures of general solderability enamelled wire, the cut through temperature that high-fire resistance provided by the present invention can weld insulating lacquer layer is 290～330 ℃.
(4) compare with common 180 grades of straight weldering property insulating lacquer layer products, high-fire resistance provided by the present invention can weld insulating lacquer layer not to be had and can produce because there is hydrolysis the advantageous characteristic of salt solution pin hole.
As can be seen here, high-fire resistance provided by the present invention can weld insulating lacquer layer, thermal endurance and the electrical property of magnet wire insulation layer have been improved, make again product when processing operation, there is straight weldering, both simplified Production of Enamel Wires operation, the production efficiency that has improved again Downstream processing producer, has reduced client production cost.High-fire resistance provided by the present invention can weld insulating lacquer layer and can be used for the making of coffee machine self-priming magnetic water pump winding.
In addition, the production method that high-fire resistance provided by the present invention can weld insulating lacquer layer also has following beneficial effect:
(1) insulation paint film and conductor adhesion are good;
(2) enamelled wire product film integrity and salt solution pin hole are few, make good insulating between coil turn that enamelled wire coiling forms;
(3) enamelled wire product color is even;
(4) enamelled wire product external diameter and D.C. resistance consistency are good, the coil parameter high conformity that enamelled wire coiling is formed;
(5) add after high temperature resistant dyestuff or pigment, can make shades of colour line, be convenient to identification.
Accompanying drawing explanation
Fig. 1 is the structural representation that the high-fire resistance in one of them embodiment of the present invention can weld insulating lacquer layer.
In upper figure, 1-conductor core wire, 2-insulating coating.
Embodiment
Below with reference to accompanying drawing, also the present invention is described in detail in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, the feature in following embodiment and embodiment can combine mutually.
In one of them embodiment of the present invention, provide a kind of high-fire resistance can weld insulating lacquer layer, referring to Fig. 1, high-fire resistance can weld insulating lacquer layer and comprise the insulating coating 2 on conductor core wire 1 and parcel conductor core wire 1, and the diameter of described enamelled wire is preferably 0.016～0.600mm.The pure copper wire (copper content is more than 99.95%) that the conductor core wire 1 of the present embodiment is high conductivity, or, according to Special use occasion, conductor core wire 1 also can select to have copper alloy wire (comprising yellow gold, gun-metal, magnesium copper alloy, pltine etc.), the aluminum steel of high electrical conductivity.Described insulating coating 2 is cured and is formed by imine modified polyester-imide insulating varnish high temperature, and the formula of described polyester-imide insulating varnish is in Table one.The thickness of insulating coating 2 is preferably 1 grade or 2 grades of film thicknesses.
Table one:
The high-fire resistance of the various embodiments described above can be welded to insulating lacquer layer and test, assay is in Table two.
Table two:
| Interventions Requested | Embodiment 1 | |
Embodiment 3 | Embodiment 4 |
| Straight weldering property | 490℃×2s | 490℃×2s | 490℃×2s | 490℃×2s |
| Temperature index | 203 | 203 | 203 | 203 |
| Cut through temperature | 310℃×2min | 310℃×2min | 310℃×2min | 310℃×2min |
As can be seen here, the high-fire resistance that the embodiment of the present invention provides can weld insulating lacquer layer and have high-fire resistance and high electrical performance, meanwhile, has solderability, has improved Downstream processing producer's production efficiency, has reduced client production cost.
In another embodiment of the present invention, provide a kind of high-fire resistance can weld the production method of insulating lacquer layer, it in turn includes the following steps:
Step (1), line base draw the bare conductor heart yearn 1 that forms required size (as diameter 0.071mm) through pressure processing, the selection of die size is successively passed and drawn by cone pulley for metal-wire drawing machine design velocity ratio by product cross-sectional area of conductor is long-pending;
Step (2), bare conductor heart yearn 1 clean through the pure water of 60～80 ℃ (being preferably 65 ℃, 70 ℃, 75 ℃), with the speed of 300～800m/min (being preferably 400m/min, 500m/min, 600m/min, 700m/min), introduce in annealing furnace and carry out protectiveness bright annealing;
Step (3) is with the quick cooling bare conductor heart yearn of pure water 1 surface of 60～80 ℃ (being preferably 65 ℃, 70 ℃, 75 ℃), with clean cold air, dry up fast bare conductor heart yearn 1 surface moisture again, then by the adsorption moisture of drying baker flash baking bare conductor heart yearn 1 remained on surface;
Preferably, the bake out temperature of described drying baker is 200～300 ℃, more preferably 230 ℃, 250 ℃, 280 ℃.
Step (4) by through cleaning, annealing, the bare copper wire of drying is incorporated into baker japanning district with bare conductor heart yearn 1 with the speed of 300～800m/min (being preferably 400m/min, 500m/min, 600m/min, 700m/min), during by felt or mould, apply polyester-imide insulating varnish, guide wheel, japanning roller trough, felt hole or die hole and bare copper wire center superposition make to go between, through baker high temperature, cure insulating varnish and occur to be cross-linked, be attached on bare copper wire equably.
Preferably, described polyester-imide insulating varnish utilizes felt or mould repeatedly to apply 5～12 times according to film thickness.
After step (5) enamelled wire goes out baker, room temperature is air-cooled, through on-line measuring device, has monitored external diameter and film integrity, and then automatic rolling, on Wire winding shaft, obtains high-fire resistance and can weld insulating lacquer layer.
The production method that the embodiment of the present invention provides has the following advantages:
(1) insulation paint film and conductor adhesion are good;
(2) enamelled wire product film integrity and salt solution pin hole are few, make good insulating between coil turn that enamelled wire coiling forms;
(3) enamelled wire product color is even;
(4) enamelled wire product external diameter and D.C. resistance consistency are good, the coil parameter high conformity that enamelled wire coiling is formed;
(5) add after high temperature resistant dyestuff or pigment, can make shades of colour line, be convenient to identification.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (8)
1. a high-fire resistance can weld insulating lacquer layer, comprise conductor core wire and be wrapped in the insulating coating on described conductor core wire, it is characterized in that, described insulating coating is cured and is formed by imine modified polyester-imide insulating varnish high temperature, and the component of described polyester-imide insulating varnish and the percentage by weight of each component are: the mixed solvent 61%～78% of polyester imine resin 22%～39%, cresols and dimethylbenzene.
2. high-fire resistance according to claim 1 can weld insulating lacquer layer, it is characterized in that, the percentage by weight of described cresols and described dimethylbenzene is 55%～65%: 35%～45%.
3. high-fire resistance according to claim 1 can weld insulating lacquer layer, it is characterized in that, described conductor core wire is copper cash, copper alloy wire or aluminum steel.
4. according to the high-fire resistance described in any one in claims 1 to 3, can weld insulating lacquer layer, it is characterized in that, the diameter of described enamelled wire is 0.016～0.600mm.
5. high-fire resistance according to claim 4 can weld insulating lacquer layer, it is characterized in that, the thickness of described insulating coating is 1 grade or 2 grades of film thicknesses.
6. the high-fire resistance as described in any one in claim 1 to 5 can weld a production method for insulating lacquer layer, it is characterized in that, in turn includes the following steps:
(1) line base draws the bare conductor heart yearn that forms required size through pressure processing;
(2) bare conductor heart yearn cleans through the pure water of 60～80 ℃, with the speed of 300～800m/min, introduces in annealing furnace and carries out protectiveness bright annealing;
(3) surperficial with the quick cooling bare conductor heart yearn of pure water of 60～80 ℃, then dry up fast bare conductor heart yearn surface moisture with cold air, then by the adsorption moisture of drying baker flash baking bare conductor heart yearn remained on surface;
(4) bare conductor heart yearn is incorporated into baker japanning district with the speed of 300～800m/min, by felt or mould, on bare conductor heart yearn, applies by imine modified polyester-imide insulating varnish;
(5) enamelled wire goes out after baker coolingly, obtains high-fire resistance and can weld insulating lacquer layer.
7. production method according to claim 6, is characterized in that, in step (3), the bake out temperature of described drying baker is 200～300 ℃.
8. production method according to claim 6, is characterized in that, in step (4), described polyester-imide insulating varnish utilizes felt or mould repeatedly to apply 5～12 times according to film thickness, and every painting is once cured once.
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| CN201210199981.8A CN103514989A (en) | 2012-06-15 | 2012-06-15 | High heat resistance type weldable polyesterimide enameled wire and production method thereof |
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| CN201210199981.8A CN103514989A (en) | 2012-06-15 | 2012-06-15 | High heat resistance type weldable polyesterimide enameled wire and production method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015143167A1 (en) * | 2014-03-19 | 2015-09-24 | Advanced Green Technologies, Llc | Self-healing cable |
| CN107170528A (en) * | 2017-05-11 | 2017-09-15 | 苏州市新的电工有限公司 | A kind of detection method of polyester-imide enamel covered wire baking degree |
| CN107247019A (en) * | 2017-06-12 | 2017-10-13 | 苏州市新的电工有限公司 | A kind of detection method of polyester-imide stainless steel enameled wire baking degree |
| CN109545452A (en) * | 2017-08-01 | 2019-03-29 | 金波 | A kind of enameled wire and its preparation process |
| CN109887656A (en) * | 2019-04-12 | 2019-06-14 | 珠海蓉胜超微线材有限公司 | The polyester enamelled wire and its production method that can directly weld |
| CN110931169A (en) * | 2019-12-10 | 2020-03-27 | 湖州中洲电磁线有限公司 | Lacquering process for large-size copper-clad aluminum enameled wire |
| CN111599512A (en) * | 2020-04-24 | 2020-08-28 | 张宏涛 | Aluminum enameled wire |
| CN111978844A (en) * | 2020-09-01 | 2020-11-24 | 安徽晟然绝缘材料有限公司 | High-adhesion direct-welding polyesterimide enameled wire insulating varnish and preparation method thereof |
| CN113801570A (en) * | 2021-09-17 | 2021-12-17 | 恒亚电工(昆山)有限公司 | Polyesterimide enameled wire and production process thereof |
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| US4404331A (en) * | 1980-09-03 | 1983-09-13 | General Electric Company | Enamel having improved coatability and insulated electrical articles produced therefrom |
| CN101177585A (en) * | 2007-11-23 | 2008-05-14 | 中电电气集团有限公司 | Method for manufacturing polyesterimide enamelled wire paint |
| JP2009123403A (en) * | 2007-11-13 | 2009-06-04 | Hitachi Cable Ltd | Insulated electric wire and its manufacturing method |
| CN101667477A (en) * | 2009-09-24 | 2010-03-10 | 无锡巨丰复合线有限公司 | Production technology of compound enamelled round aluminium wire with high heat resistance |
| CN201498226U (en) * | 2009-05-22 | 2010-06-02 | 东莞宇隆电工材料有限公司 | Insulating lacquer layer capable of being directly welded |
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2012
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4404331A (en) * | 1980-09-03 | 1983-09-13 | General Electric Company | Enamel having improved coatability and insulated electrical articles produced therefrom |
| JP2009123403A (en) * | 2007-11-13 | 2009-06-04 | Hitachi Cable Ltd | Insulated electric wire and its manufacturing method |
| CN101177585A (en) * | 2007-11-23 | 2008-05-14 | 中电电气集团有限公司 | Method for manufacturing polyesterimide enamelled wire paint |
| CN201498226U (en) * | 2009-05-22 | 2010-06-02 | 东莞宇隆电工材料有限公司 | Insulating lacquer layer capable of being directly welded |
| CN101667477A (en) * | 2009-09-24 | 2010-03-10 | 无锡巨丰复合线有限公司 | Production technology of compound enamelled round aluminium wire with high heat resistance |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015143167A1 (en) * | 2014-03-19 | 2015-09-24 | Advanced Green Technologies, Llc | Self-healing cable |
| CN107170528A (en) * | 2017-05-11 | 2017-09-15 | 苏州市新的电工有限公司 | A kind of detection method of polyester-imide enamel covered wire baking degree |
| CN107247019A (en) * | 2017-06-12 | 2017-10-13 | 苏州市新的电工有限公司 | A kind of detection method of polyester-imide stainless steel enameled wire baking degree |
| CN109545452A (en) * | 2017-08-01 | 2019-03-29 | 金波 | A kind of enameled wire and its preparation process |
| CN109545452B (en) * | 2017-08-01 | 2020-07-14 | 佛山市顺德区远诚电气有限公司 | Enameled wire and preparation process thereof |
| CN109887656A (en) * | 2019-04-12 | 2019-06-14 | 珠海蓉胜超微线材有限公司 | The polyester enamelled wire and its production method that can directly weld |
| CN110931169A (en) * | 2019-12-10 | 2020-03-27 | 湖州中洲电磁线有限公司 | Lacquering process for large-size copper-clad aluminum enameled wire |
| CN111599512A (en) * | 2020-04-24 | 2020-08-28 | 张宏涛 | Aluminum enameled wire |
| CN111978844A (en) * | 2020-09-01 | 2020-11-24 | 安徽晟然绝缘材料有限公司 | High-adhesion direct-welding polyesterimide enameled wire insulating varnish and preparation method thereof |
| CN113801570A (en) * | 2021-09-17 | 2021-12-17 | 恒亚电工(昆山)有限公司 | Polyesterimide enameled wire and production process thereof |
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Application publication date: 20140115 |