CN103594154A - Electromagnetic wire coated with nano-composite insulating materials - Google Patents
Electromagnetic wire coated with nano-composite insulating materials Download PDFInfo
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- CN103594154A CN103594154A CN201310497228.1A CN201310497228A CN103594154A CN 103594154 A CN103594154 A CN 103594154A CN 201310497228 A CN201310497228 A CN 201310497228A CN 103594154 A CN103594154 A CN 103594154A
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- electromagnetic wire
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- insulating material
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Abstract
The invention discloses an electromagnetic wire coated with nano-composite insulating materials. The electromagnetic wire comprises a metal conducting wire and an insulating coating which coats the metal conducting wire. The metal conducting wire is a copper wire with the diameter of 1mm. The insulating coating sequentially comprises a bottom layer, a middle layer and an outer layer from interior to exterior. The bottom layer is made from modified polyester imine resin. The middle layer is made from modified composite insulating paint. The outer layer is made from polyamide imide. According to the electromagnetic wire coated with the nano-composite insulating materials, the electromagnetic wire has the excellent insulating performance and the high-frequency pulse aging resistance performance and can be used in a variable frequency motor for a long time, and the service life of the variable frequency motor is greatly prolonged.
Description
Technical field
The invention belongs to a kind of insulation electromagnetic wire, relate in particular to a kind of electromagnetic wire that is coated with nano-composite insulating material, belong to insulating material technical field.
Background technology
Frequency control motor is efficient, energy-conservation with it, maintenance is easy, be convenient to the advantages such as control automatically, in a lot of fields, is used widely and develops.Yet a lot of motors, after using converter technique, have occurred that the life-span sharply declines and the problem of extensive scaling loss, main cause is that motor stator electromagnetic wire insulating barrier quick aging occurs under partial discharge, space charge accumulation and high temperature and damages.Visible, the performance of electromagnetic wire has directly determined the useful life of variable-frequency motor.
Electromagnetic wire is all generally to obtain by repeated multiple times coating insulation enamelled coating on the plain conductor circular or special-shaped, therefore the performance of electromagnetic wire insulating material has directly affected the using value of electromagnetic wire.At present, for the existing employing winding process of electromagnetic wire of variable-frequency motor, be made, also have and adopt coating way to be made.Most of electromagnetic wires are because the resistance to frequency conversion performance of the insulating material of selecting is bad, or in manufacture craft, have defect, only can maintain variable-frequency motor useful life of several years, can not in variable-frequency motor, use for a long time.
Summary of the invention
For the demand, the invention provides a kind of electromagnetic wire that is coated with nano-composite insulating material, this electromagnetic wire has excellent insulation property and the ageing properties of resistance to high-frequency impulse, can in variable-frequency motor, use for a long time, has greatly extended the useful life of variable-frequency motor.
The present invention is a kind of electromagnetic wire that is coated with nano-composite insulating material, described electromagnetic wire comprises plain conductor and applies the insulating coating on it, described plain conductor is the copper cash of diameter 1mm, described insulating coating comprises bottom, intermediate layer and skin from inside to outside successively, described primer adopts modified poly ester imide resin, described intermediate layer material adopts modification composite insulating varnish, and described cladding material adopts polyamidoimide.
In a preferred embodiment of the present invention, described underlayer thickness is 0.05mm, and intermediate layer thickness is 0.01mm, and outer layer thickness is 0.02mm.
In a preferred embodiment of the present invention, described modification composite insulating varnish is formed by titanium dioxide based composite powder, polyamide-imide insulating varnish and METHYLPYRROLIDONE solvent.
In a preferred embodiment of the present invention, the mixed proportion of described modification composite insulating varnish is: titanium dioxide based composite powder 33%, polyamide-imide insulating varnish 60%, METHYLPYRROLIDONE solvent 7%.
In a preferred embodiment of the present invention, described titanium dioxide based composite powder is mixed by nano titanium oxide and non-nano titanium dioxide, and its mixed proportion is 50:50.
In a preferred embodiment of the present invention, the particle diameter of described nano titanium oxide is 25nm, and the particle diameter of non-nano titanium dioxide is 250nm.
The present invention has disclosed a kind of electromagnetic wire that is coated with nano-composite insulating material, and this electromagnetic wire has excellent insulation property and the ageing properties of resistance to high-frequency impulse, can in variable-frequency motor, use for a long time, has greatly extended the useful life of variable-frequency motor.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Fig. 1 is the cutaway view of the electromagnetic wire of embodiment of the present invention coating nano-composite insulating material;
In accompanying drawing, the mark of each parts is as follows: 1, plain conductor, 2, bottom, 3, intermediate layer, 4, skin.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.
Fig. 1 is the cutaway view of the electromagnetic wire of embodiment of the present invention coating nano-composite insulating material; This electromagnetic wire comprises plain conductor 1 and applies the insulating coating on it, described plain conductor 1 is the copper cash of diameter 1mm, described insulating coating comprises bottom 2, intermediate layer 3 and outer 4 from inside to outside successively, described bottom 2 materials adopt modified poly ester imide resin, described intermediate layer 3 materials adopt modification composite insulating varnish, and described skin 4 materials adopt polyamidoimide.
The electromagnetic wire of the coating nano-composite insulating material that the present invention mentions is a kind of compound electric magnet-wire of three-decker, on its metallic copper wire 1, adopt coating way to be coated with successively bottom 2 modified poly ester imide resin materials, intermediate layer 3 composite insulating varnish and outer 4 polyamidoimide materials.Wherein, bottom 2 thickness are 0.05mm, and intermediate layer 3 thickness are 0.01mm, and outer 4 thickness are 0.02mm.The modification composite insulating varnish that intermediate layer 3 adopts is formed by titanium dioxide based composite powder, polyamide-imide insulating varnish and METHYLPYRROLIDONE solvent, and its mixed proportion is: titanium dioxide based composite powder 33%, polyamide-imide insulating varnish 60%, METHYLPYRROLIDONE solvent 7%.Wherein, the non-nano titanium dioxide that the nano titanium oxide that titanium dioxide based composite powder is 25nm by particle diameter and particle diameter are 250nm mixes with mixing ratio 50:50.
The electromagnetic wire of the coating nano-composite insulating material in the present invention has mainly improved by the modification composite insulating varnish in intermediate layer 3 the resistance to frequency conversion life-span of electromagnetic wire greatly.This layer of modification composite insulating varnish is coated on bottom 2 modified poly ester imide resin insulating material, the effect that on it, skin 4 polyamidoimide insulating material of coating play protection intermediate layer 3 and improve whole electromagnetic wire surface quality.Variable-frequency motor is conventionally under the effect of hf and hv pulse, and strong partial discharge occurs the air layer in the V-shape region between electromagnetic wire, makes that organic insulation resin is washed very soon, corrosion and attenuation is finally breakdown; The electromagnetic wire of this coating nano-composite insulating material is owing to having added titanium dioxide based composite powder in common insulating resin polyamidoimide; can form one deck inorganic oxide shell; ozone, charged particle and heat etc. that high-frequency impulse is produced effectively shield, the insulating material of protection internal layer.Through performance test, the electromagnetic wire that this nano-material modified insulating varnish painting is made is for the useful life of variable-frequency motor, and more common insulating material improves more than 7 times.
The present invention has disclosed a kind of electromagnetic wire that is coated with nano-composite insulating material, and this electromagnetic wire has excellent insulation property and the ageing properties of resistance to high-frequency impulse, can in variable-frequency motor, use for a long time, has greatly extended the useful life of variable-frequency motor.
The above; it is only the specific embodiment of the present invention; but protection scope of the present invention is not limited to this; any those of ordinary skill in the art are in the disclosed technical scope of the present invention; the variation that can expect without creative work or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range that claims were limited.
Claims (6)
1. an electromagnetic wire that is coated with nano-composite insulating material, it is characterized in that, described electromagnetic wire comprises plain conductor and applies the insulating coating on it, described plain conductor is the copper cash of diameter 1mm, described insulating coating comprises bottom, intermediate layer and skin from inside to outside successively, described primer adopts modified poly ester imide resin, and described intermediate layer material adopts modification composite insulating varnish, and described cladding material adopts polyamidoimide.
2. the electromagnetic wire of coating nano-composite insulating material according to claim 1, is characterized in that, described underlayer thickness is 0.05mm, and intermediate layer thickness is 0.01mm, and outer layer thickness is 0.02mm.
3. the electromagnetic wire of coating nano-composite insulating material according to claim 1, is characterized in that, described modification composite insulating varnish is formed by titanium dioxide based composite powder, polyamide-imide insulating varnish and METHYLPYRROLIDONE solvent.
4. the electromagnetic wire of coating nano-composite insulating material according to claim 3, it is characterized in that, the mixed proportion of described modification composite insulating varnish is: titanium dioxide based composite powder 33%, polyamide-imide insulating varnish 60%, METHYLPYRROLIDONE solvent 7%.
5. the electromagnetic wire of coating nano-composite insulating material according to claim 1, is characterized in that, described titanium dioxide based composite powder is mixed by nano titanium oxide and non-nano titanium dioxide, and its mixed proportion is 50:50.
6. the electromagnetic wire of coating nano-composite insulating material according to claim 5, is characterized in that, the particle diameter of described nano titanium oxide is 25nm, and the particle diameter of non-nano titanium dioxide is 250nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310497228.1A CN103594154A (en) | 2013-10-21 | 2013-10-21 | Electromagnetic wire coated with nano-composite insulating materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310497228.1A CN103594154A (en) | 2013-10-21 | 2013-10-21 | Electromagnetic wire coated with nano-composite insulating materials |
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| Publication Number | Publication Date |
|---|---|
| CN103594154A true CN103594154A (en) | 2014-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201310497228.1A Pending CN103594154A (en) | 2013-10-21 | 2013-10-21 | Electromagnetic wire coated with nano-composite insulating materials |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104853575A (en) * | 2015-05-08 | 2015-08-19 | 芜湖航天特种电缆厂 | High-density light type braided anti-wave sleeve |
| CN106675388A (en) * | 2016-12-16 | 2017-05-17 | 上海裕生特种线材有限公司 | Nano self-lubricating insulating paint as well as preparation method and application thereof |
| CN107286840A (en) * | 2017-07-25 | 2017-10-24 | 芜湖乾凯材料科技有限公司 | A kind of copper cash for being enclosed with nano-composite insulating material and preparation method thereof |
-
2013
- 2013-10-21 CN CN201310497228.1A patent/CN103594154A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104853575A (en) * | 2015-05-08 | 2015-08-19 | 芜湖航天特种电缆厂 | High-density light type braided anti-wave sleeve |
| CN104853575B (en) * | 2015-05-08 | 2018-11-06 | 芜湖航天特种电缆厂股份有限公司 | The lightweight braided wave prevention sleeve of high density |
| CN106675388A (en) * | 2016-12-16 | 2017-05-17 | 上海裕生特种线材有限公司 | Nano self-lubricating insulating paint as well as preparation method and application thereof |
| CN107286840A (en) * | 2017-07-25 | 2017-10-24 | 芜湖乾凯材料科技有限公司 | A kind of copper cash for being enclosed with nano-composite insulating material and preparation method thereof |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140219 |