CN102321432A - Application of silica nano material in polyester-imide enameled wire insulating varnish - Google Patents
Application of silica nano material in polyester-imide enameled wire insulating varnish Download PDFInfo
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- CN102321432A CN102321432A CN201110234567A CN201110234567A CN102321432A CN 102321432 A CN102321432 A CN 102321432A CN 201110234567 A CN201110234567 A CN 201110234567A CN 201110234567 A CN201110234567 A CN 201110234567A CN 102321432 A CN102321432 A CN 102321432A
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Abstract
The invention relates to an application of a silica nano material in polyester-imide enameled wire insulating varnish. The method for dispersing nano-silica in polyester-imide varnish comprises the following steps in sequence: predispersing 6-8 parts of nano-silica and 0.6 parts of gamma-aminopropyl triethoxysilane (KH550) in 40 parts of modified polyester varnish, feeding silica into the above pre-dispersion A for not less than three times at intervals of 20-40 min so as to generate a pre-dispersion A; adding 50 parts of polyester-imide enameled wire insulating varnish and 10 parts of modified polyester enameled wire insulating varnish into the pre-dispersion A, dispersing for 1 hour to generate a pre-dispersion B; performing circulating continuous dispersion of the pre-dispersion B in a rod-pin dispenser for 3 hours, wherein the temperature of a dispersing cavity is controlled to be not more than 70 DEG C. Enameled wires prepared by the method of the invention have corona resistance which is up to above 100 times of that of common enameled wires; the prepared enameled wires have smooth surfaces without bright spots; the storage life of the insulating varnish is up to 1 year; the process has wide redundancy, and is convenient for the realization of robust process production.
Description
Technical field
Silica nano material of the present invention is used for the polyester-imide enamelled wire insulated paint, relates to silica nano material and is scattered in the dispersion technology in the polyester-imide enamelled wire insulated paint.
Background technology
When the IGBT variable-frequency stepless speed-regulating, can in solenoid, produce the towering sharp wave of moment rising, on insulated wire, produce corona, the insulation system of insulated wire produces electricity under the effect of corona aging, makes the insulation system early failure.The way that solves generally is in insullac, to add materials such as nano silicon, nano titanium oxide, nano aluminium oxide, and wherein nano material dispersive quality in paint is the technology of key core.Present system both domestic and external is coated with lacquer manufacturer and is generally adopted the disc type dispersion method earlier pre-dispersed in organic solvent nano material, and then is scattered in the method in the insullac.This is for titanium oxide; Nano materials such as aluminum oxide are very effective; Because silica nano material reunites easily, be difficult to the insullac below median size 100 nanometers that is dispersed to of silicon-dioxide with aforesaid method, cause the rough of enameled wire in use and bright spot is arranged.Have report to adopt Prepared by Sol Gel Method silica nanometer-polyester-imide enamelled wire insulated paint abroad, but complex process, domestic enterprise does not grasp gordian technique yet, the insullac of processing gel and can't using easily in storage process.
Summary of the invention
Order of the present invention aims to provide silica nano material and is used for the polyester-imide enamelled wire insulated paint; The feasible silica nanometer of processing-polyester-imide enamelled wire insulated paint ability standing storage; The enameled wire smooth surface that coats does not have bright spot, and corona-resistance property reaches more than 100 times of common enameled wire.
Content of the present invention is: silica nano material is used for the polyester-imide enamelled wire insulated paint, adopts nano silicon to be scattered in the polyester-imide lacquer, and dispersing method carries out according to following step:
(1) earlier 6～8 parts of nano silicon; 0.6 part γ-An Bingjisanyiyangjiguiwan (KH550), pre-dispersed in 40 parts of modified poly ester lacquers, the silicon-dioxide branch is no less than three times and feeds intake in above-mentioned predispersion A; Each 20～40 minutes at interval, generate predispersion A;
(2) add 50 parts of polyester-imide enamelled wire insulated paints among the predispersion A, 10 parts of modified poly ester enamelled wire insulated paints disperseed 1 hour, generated predispersion B;
(3) in rod pin formula dispersion machine, play circulation to above-mentioned predispersion B and disperseed 3 hours continuously, control disperses cavity temperature to be no more than 70 ℃.
On the such scheme basis; It is the dispersion impeller of 200～300mm, rotating speed 600～800RPM that diameter is adopted in the preparation of predispersion A in the said step (1); The equal particle diameter of making even is 6～8 parts of the silicon-dioxide of 25 nanometers; 0.6 part of γ-An Bingjisanyiyangjiguiwan (KH550) is scattered in 40 parts of modified poly ester lacquers, generates predispersion A.
On the such scheme basis, silicon-dioxide divides and feeds intake for 9 times in the said step (2), and each 30 minutes at interval, to accomplish the back and add 50 parts of polyester-imides, 10 parts of modified poly esters disperseed 1 hour, generation predispersion B.
On the such scheme basis, in the said step (3), the diameter of zirconium white pearl is 0.6～0.8mm in the described excellent pin formula dispersion machine.
Compared with prior art, the silica nanometer of processing with the present invention-polyester-imide enamelled wire insulated paint has following advantage:
(1) the enameled wire corona-resistance property of processing can reach more than 100 times of common enameled wire.
(2) the enameled wire smooth surface of processing does not have bright spot.
(3) but the insullac standing storage, the shelf lives can reach 1 year.
(4) the technology remaining is wide, is convenient to realize sane explained hereafter.
Embodiment
Comparative example 1
Use conventional polyester imines enamelled wire insulated paint to be priming paint (such as the bright right 588/40G in Shanghai), polyamide acid imide enamelled wire insulated paint is finish paint (such as the bright right 588/40G in Shanghai), processes 200 grades of polyamidoimide complex polyester imines enameled wires.
Comparative example 2
With 6 parts of silica nano materials (particle diameter 25 nanometers); Adopt disc type dispersive method; Disperseed 5 hours, and be scattered in 100 parts of polyester-imide enamelled wire insulated paints, and as priming paint; Polyamide acid imide enamelled wire insulated paint is finish paint (bright by right 338/35 such as Shanghai), processes 200 grades of polyamidoimide complex polyester imines frequency conversion varnished wires.
Embodiment 1
With 6 parts of silica nano materials (particle diameter 25 nanometers); Adopt the inventive method; Be scattered in 50 parts of polyester-imide lacquers, in 50 parts of modified poly ester lacquers, and as priming paint; Polyamide acid imide enamelled wire insulated paint is finish paint (bright by right 338/35 such as Shanghai), processes 200 grades of polyamidoimide complex polyester imines frequency conversion varnished wires.
The method that silica nano material is scattered in the polyester-imide lacquer is following:
(1) earlier 6 parts of nano silicons, 0.6 part of γ-An Bingjisanyiyangjiguiwan (KH550), pre-dispersed in 40 parts of modified poly esters lacquers, silicon-dioxide divides and feeds intake for 9 times in above-mentioned predispersion A, each 30 minutes at interval, generates predispersion A;
(2) add 50 parts of polyester-imide enamelled wire insulated paints among the predispersion A, 10 parts of modified poly ester lacquers disperseed 1 hour, generated predispersion B;
(3) in rod pin formula dispersion machine, play circulation to above-mentioned predispersion B and disperseed 3 hours continuously, control disperses cavity temperature to be no more than 70 ℃.
Embodiment 2
With 8 parts of silica nano materials (particle diameter 25 nanometers); Adopt embodiment 1 method; Be scattered in 50 parts of polyester-imide lacquers, in 50 parts of modified poly ester lacquers, and as priming paint; Polyamide acid imide enamelled wire insulated paint is finish paint (bright by right 338/35 such as Shanghai), processes 200 grades of polyamidoimide complex polyester imines frequency conversion varnished wires.
The preparation of enameled wire line-transect
It is following to be coated with the Wiring technology parameter:
Be coated with line equipment: plum reaches QHLF1/2
Processing parameter:
Baker inlet: 230 ℃; Baker lower floor: 350 ℃; Supplementary heating after the catalysis: 520 ℃; Recirculation blower: 2100RPM; Waste discharge blower fan: 800RPM; Cold wind blower fan: 400RPM
The speed of a motor vehicle: 30 m/min
Japanning passage: 9+3
The enameled wire specification is 1.05
The TP in anti-corona life-span is: 200 nanoseconds of rise time, voltage ± 1500V, frequency 20KV, dutycycle 50%, 90 ℃ of temperature.
Other TPs are with reference to GB/T 4074.
Can know that by table the inventive method can greatly be improved the anti-corona life-span of enameled wire.
Claims (4)
1. silica nano material is used for the polyester-imide enamelled wire insulated paint, adopts nano silicon to be scattered in the polyester-imide lacquer, it is characterized in that dispersing method complies with following step and carry out:
Earlier 6～8 parts of nano silicons; 0.6 part γ-An Bingjisanyiyangjiguiwan (KH550), pre-dispersed in 40 parts of modified poly ester lacquers, the silicon-dioxide branch is no less than three times and feeds intake in above-mentioned predispersion A; Each 20～40 minutes at interval, generate predispersion A;
Add 50 parts of polyester-imide enamelled wire insulated paints among the predispersion A, 10 parts of modified poly ester lacquers disperseed 1 hour, generated predispersion B;
(3) in rod pin formula dispersion machine, play circulation to above-mentioned predispersion B and disperseed 3 hours continuously, the control chamber temperature is no more than 70 ℃.
2. silica nano material according to claim 1 is used for the polyester-imide enamelled wire insulated paint; It is characterized in that: it is the dispersion impeller of 200～300mm, rotating speed 600～800RPM that diameter is adopted in the preparation of the predispersion A in the said step (1); The equal particle diameter of making even is 6～8 parts of the silicon-dioxide of 25 nanometers; 0.6 part of γ-An Bingjisanyiyangjiguiwan (KH550) is scattered in 40 parts of modified poly ester lacquers, generates predispersion A.
3. silica nano material according to claim 1 is used for the polyester-imide enamelled wire insulated paint; It is characterized in that: silicon-dioxide divides and feeds intake for 9 times in the said step (2); Each 30 minutes at interval, add 50 parts of polyester-imides, 10 parts of modified poly esters after accomplishing; Disperseed 1 hour, and generated predispersion B.
4. silica nano material according to claim 1 is used for the polyester-imide enamelled wire insulated paint, it is characterized in that: in the said step (3), the diameter of zirconium white pearl is 0.6～0.8mm in the described excellent pin formula dispersion machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110234567A CN102321432A (en) | 2011-08-16 | 2011-08-16 | Application of silica nano material in polyester-imide enameled wire insulating varnish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110234567A CN102321432A (en) | 2011-08-16 | 2011-08-16 | Application of silica nano material in polyester-imide enameled wire insulating varnish |
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| Publication Number | Publication Date |
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| CN102321432A true CN102321432A (en) | 2012-01-18 |
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| CN201110234567A Pending CN102321432A (en) | 2011-08-16 | 2011-08-16 | Application of silica nano material in polyester-imide enameled wire insulating varnish |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106128570A (en) * | 2016-06-24 | 2016-11-16 | 安徽九华金润铜业有限公司 | Self-lubricating Inverter fed motor composite enameled wire |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101735716A (en) * | 2009-11-24 | 2010-06-16 | 丹阳四达化工有限公司 | Method for preparing corona-resistant wire enamel |
| CN101824268A (en) * | 2010-05-07 | 2010-09-08 | 江苏八达线缆有限公司 | Production method of nano composite modified insulating paint for enameled wire and high-performance nano composite enameled wire |
-
2011
- 2011-08-16 CN CN201110234567A patent/CN102321432A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101735716A (en) * | 2009-11-24 | 2010-06-16 | 丹阳四达化工有限公司 | Method for preparing corona-resistant wire enamel |
| CN101824268A (en) * | 2010-05-07 | 2010-09-08 | 江苏八达线缆有限公司 | Production method of nano composite modified insulating paint for enameled wire and high-performance nano composite enameled wire |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106128570A (en) * | 2016-06-24 | 2016-11-16 | 安徽九华金润铜业有限公司 | Self-lubricating Inverter fed motor composite enameled wire |
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Application publication date: 20120118 |