CN1546586A - Preparation method of nanometer modified corona-tolerant enamel of enameled wire - Google Patents
Preparation method of nanometer modified corona-tolerant enamel of enameled wire Download PDFInfo
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- CN1546586A CN1546586A CNA2003101111893A CN200310111189A CN1546586A CN 1546586 A CN1546586 A CN 1546586A CN A2003101111893 A CNA2003101111893 A CN A2003101111893A CN 200310111189 A CN200310111189 A CN 200310111189A CN 1546586 A CN1546586 A CN 1546586A
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- 210000003298 dental enamel Anatomy 0.000 title claims abstract description 68
- 238000002360 preparation method Methods 0.000 title claims abstract description 53
- 239000002086 nanomaterial Substances 0.000 claims abstract description 66
- 229920005989 resin Polymers 0.000 claims abstract description 40
- 239000011347 resin Substances 0.000 claims abstract description 40
- 229910052809 inorganic oxide Inorganic materials 0.000 claims abstract description 20
- 239000002105 nanoparticle Substances 0.000 claims abstract description 14
- 239000003960 organic solvent Substances 0.000 claims abstract description 14
- 238000012986 modification Methods 0.000 claims description 30
- 230000004048 modification Effects 0.000 claims description 30
- 239000000203 mixture Substances 0.000 claims description 22
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 229920003055 poly(ester-imide) Polymers 0.000 claims description 17
- -1 trihydroxyethyl isocyanuric acid ester Chemical class 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 238000000576 coating method Methods 0.000 claims description 13
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 11
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 10
- 229920000728 polyester Polymers 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 8
- 150000001896 cresols Chemical group 0.000 claims description 8
- 150000002466 imines Chemical class 0.000 claims description 7
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 4
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 3
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 3
- 239000004645 polyester resin Substances 0.000 claims description 3
- 229920001225 polyester resin Polymers 0.000 claims description 3
- 229920001241 Cyamelide Polymers 0.000 claims description 2
- 150000001298 alcohols Chemical class 0.000 claims description 2
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 claims description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 150000002989 phenols Chemical class 0.000 claims description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims 1
- 239000002002 slurry Substances 0.000 abstract 2
- 239000003607 modifier Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 25
- 239000010410 layer Substances 0.000 description 24
- 239000003973 paint Substances 0.000 description 15
- 239000004922 lacquer Substances 0.000 description 14
- 239000007787 solid Substances 0.000 description 13
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 11
- 239000002245 particle Substances 0.000 description 9
- 239000000839 emulsion Substances 0.000 description 8
- 239000002344 surface layer Substances 0.000 description 7
- 239000002131 composite material Substances 0.000 description 6
- 229960000935 dehydrated alcohol Drugs 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000037452 priming Effects 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 101100232929 Caenorhabditis elegans pat-4 gene Proteins 0.000 description 2
- 241000612182 Rexea solandri Species 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 229960004756 ethanol Drugs 0.000 description 2
- 229910021485 fumed silica Inorganic materials 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229920001228 polyisocyanate Polymers 0.000 description 2
- 239000005056 polyisocyanate Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- MOUGWYWVKKUKGF-UHFFFAOYSA-N 1-(2,2,2-trihydroxyethyl)-1,3,5-triazinane-2,4,6-trione Chemical compound OC(O)(O)CN1C(=O)NC(=O)NC1=O MOUGWYWVKKUKGF-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical class CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002320 enamel (paints) Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229920003987 resole Polymers 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 125000002256 xylenyl group Chemical class C1(C(C=CC=C1)C)(C)* 0.000 description 1
Landscapes
- Organic Insulating Materials (AREA)
- Insulated Conductors (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a preparation method of nanometer modified corona-tolerant enamel of enameled wire which comprises the steps of, taking 1-20 parts of inorganic oxide nano particles, charging 3-100 organic solvent, dispersing the inorganic oxide into uniform nano dispersed state at room temperature, charging 0.1-1.0 part of modifier for reacting 1-3 hours at 50-140 deg. C, obtaining modified nano material slurry, charging 60-100 parts of insulating resin into modified nano material slurry for reacting 3-6 hours at 70-120 deg. C.
Description
Affiliated technical field
The present invention relates to a kind of preparation method of coating, particularly a kind of preparation method of nano modification wire enamel.The nano modification wire enamel is used to coat the enameled wire of anti-the corona, improves its over-all properties, especially improves corona-resistance property, can be used for the manufacturing of alternating-current variable frequency motor.
Background technology
Because the remarkable characteristic that alternating-current variable frequency motor has, in recent years, alternating-current variable frequency motor had obtained swift and violent development, but up to now, all producers that produce this motor have all run into distinct issues, are exactly winding insulation performance premature failure.This is owing to can produce in machine winding during variable-frequency motor setter high speed rotating and transship voltage, insulated wire in this type of stator can be bigger than the stress that is subjected under common alternating-current effect, and the input cable that connects frequency transformer and motor input terminus can produce momentary impulse.The result of voltage overload makes and produce shelf depreciation in machine winding, particularly between frequency conversion coil out of phase tangentially at the interface.The result of discharge decomposes insulation layer, thins down, and produces short-circuit current between two conductors, and it is aging to have formed the insulating electricity, causes turn-to-turn insulation to lose efficacy, and electrical machinery life shortens, and finally causes motor to damage or burns.Therefore require used winding wire to have higher thermotolerance and corona resistance, to improve the ability of this shelf depreciation of opposing.
At U.S.Pat.No.4,503, in 124, propositions such as John J.Keane add aluminum oxide in common insullac powder improves the corona resistance of insullac, insullac comprises polyimide, and polyester-imide or polyamidoimide adopt the high speed shear stirring method, add the aluminium oxide particles of 1%-35% weight percentage, the aluminium oxide particles particle diameter requires less than 0.1 μ m (being preferably in 0.05-0.005 μ m).Be outward appearance and the performance of improving line, U.S.Pat.No.4,537,804 proposed to adopt two steps to be coated with collimation method, and the first layer is a polyester, and the second layer is the mixture of polymeric amide and aluminum oxide.Then U.S.Pat.No.4,546,041 propose again to add 15% aluminum oxide with the mixture of polyester-imide and the aluminum oxide second layer coating as insulated wire, and when 650V/mil., the anti-corona time is 10000 hours, and surperficial and toughness is all fine.But aluminium oxide particles has a negative impact to the heavy wear effect of the coating apparatus painting nozzle circularity to enameled wire, thereby influences the use properties of enameled wire.
Enameled wire coating in patent .CA 1 168 857 and U.S. Pat 4 760 296 contains Al simultaneously
2O
3And SiO
2
In European patent EP 0,768 680 and EP 0,768 679, in insulating resin, contain SiO
2Filler, corona-resistance property is good, but thermotolerance and mechanical property can not satisfy the needs of insulated wire.
By containing Cr in European patent EP 356929 and the U.S. Pat 4 935 302 disclosed batchings
2O
3Or Fe
2O
3, these two kinds of pigment ratio are great, and sedimentation easily causes being coated with colo(u)rant dispersion inequality in line difficulty and the coating.
In WO 96/42089, YIN, people such as Weijun propose to add TiO respectively in insulating material such as common polyester, polyarylsulphone, polymeric amide, polyimide, polyvinyl acetate, urethane, polyimide, Resins, epoxy, polyamidoimide, polyester-imide
2, Al
2O
3, SiO
2, ZnO, Fe
2O
3And various clays, or, can improve the expected service life of motor with wherein several metal oxides mixing uses.The particle diameter of the weighting material that requirement adds is between 0.01-0.8 μ, and surface-area is 9-250m
2/ g, consumption account for the 1-65% (weight percentage) of insulating resin matrix consumption, but its application performance and unsatisfactory.
In patent (U.S.Pat.No.5,552,222), Donald A.Bolon proposes to adopt three to be coated with the problem that solves insulated wire stretching back degradation, and has pointed out every layer thickness range.Bottom is the pure organism that does not contain particulate matter, and the middle layer is the composite bed that contains 15% weighting material, and thickness is the 100-1000 micron, and skin also is the composite bed that contains the weighting material of 5%-25%, and thickness is the 10-100 micron.
At U.S.Pat.No.6, in 100,474, it is polyester that McGregor et al proposes to adopt bottom, and surface layer is for containing 15% fumed silica and Cr
2O
3The polyamidoimide mixture solve the anti-corona problem of insulated wire paint film, the average time to rupture of resulting insulated wire is 245 hours (under the 460V, kinking to experiment).Require fumed silica and Cr
2O
3Surface-area be 250-550m
2/ g.But the outward appearance of lead and poor toughness problem still exist.
In the WO98/33190 patent, HAKE, John, E. wait and propose to adopt three layers of different composite methods to prepare insulated wire, bottom is not for containing the polyester imine resin of inorganic particulate, also can be modified poly ester, polyamidoimide, high-temperature insulating paints such as polyethers, polyester-imide, polymeric polyisocyanate, phenolic aldehyde; The middle layer is to be matrix resin with the bottom, adds the Al of the 15-30% of amount of resin
2O
3Particle, particle diameter are 5-250nm, with a small amount of TiO
2Particle is as staining agent; Surface layer is the high-temperature insulation similar with a bottom lacquer, has specially proposed with the polyamidoimide insullac that do not contain inorganic particulate as surface layer, and with the insulated wire of this method preparation, toughness is good, and has prolonged work-ing life.At U.S.Pat.No.6, in 056,995 patent, HAKE, John, E. etc. further propose, bottom is made up of trihydroxyethyl isocyanuric acid polyester, resol and polymeric polyisocyanate, and the insullac type in bottom and middle layer is identical, and the insullac type in surface layer and bottom, middle layer is different.
Though above method makes the corona-resistance property of enameled wire all obtain certain improvement, but directly filler grain is blended in high solids content, the full-bodied insulating resin, high viscosity systems is difficult to make the inorganic particulate of filling to reach the one-level dispersion, and the active site on filler grain surface may react with the active group of insulating resin, stable bad before mixture is solidified, back paint film bad mechanical property is solidified in the sedimentation layering, and snappiness and sticking power are bad.
Summary of the invention
Purpose of the present invention is intended to overcome above-mentioned deficiency of the prior art, and a kind of preparation method of nano modification corona-resistant wire enamel is provided, thereby provides a kind of stable, the corona-resistant wire enamel of high comprehensive performance.The present invention has overcome inorganic nano-particle and has produced reunion in the insulated electro enamel paint of high viscosity, high solids content, be difficult for the dispersive shortcoming, provide a kind of elder generation that inorganic nano-particle is dispersed in the organic solvent, with surface treatment agent particle surface is for further processing again, adopt the original position composite methods to prepare the high-performance wire enamel of anti-the corona, this insulated wire insullac has every performance that good preservation stability, corona resistance, adhesivity and high-performance wire enamel are had.
Content of the present invention is: a kind of preparation method of nano modification corona-resistant wire enamel is characterized in that comprising the following steps:
(1) nano material is disperseed: get 1～20 part of inorganic oxide nanoparticles, add 3～100 parts of organic solvents, inorganic oxide is dispersed to is uniform nano-dispersed attitude;
(2) nano-material modified: as to add 0.1～1.0 part of properties-correcting agent again,, obtain the modified Nano material paste 50～140 ℃ of reactions 1～3 hour;
(3) preparation of nano material/insulating resin mixture: 60～100 part 40% insulating resin is added in the modified Nano material paste, under 70 ℃～120 ℃ condition, reacted 3～6 hours;
Preparation method of the present invention also comprises following step same as the prior art:
(4) preparation of corona-resistant wire enamel: add the required various additives of wire enamel (composition, consumption and the technology of the wire enamel general with having commerce now are consistent, omit) then, stirring at 70 ℃ promptly obtains the nano modification corona-resistant wire enamel.
The preparation method of the described nano modification corona-resistant wire enamel of content of the present invention is characterized in that being preferably and comprises the following steps:
(1) nano material is disperseed: get 5～15 parts of (weight, back are together) inorganic oxide nanoparticles, add 15～70 parts of organic solvents, inorganic oxide is dispersed to is uniform nano-dispersed attitude;
(2) nano-material modified: as to add 0.5～0.7 part of properties-correcting agent again,, obtain the modified Nano material paste 50～140 ℃ of reactions 1～3 hour;
(3) preparation of nano material/insulating resin mixture: 60～75 part 40% insulating resin is added in the modified Nano material paste, under 70 ℃～120 ℃ condition, reacted 3～6 hours;
Equally, preparation method of the present invention also comprises following step same as the prior art:
(4) preparation of corona-resistant wire enamel: add the required various additives of wire enamel (composition, consumption and the technology of the wire enamel general with having commerce now are consistent, omit) then, stirring at 70 ℃ promptly obtains the nano modification corona-resistant wire enamel.
In the content of the present invention: described inorganic oxide nanoparticles is Cr
2O
3, SiN, SiC, TiO
2, Al
2O
3, ZnO, SiO
2, CaCO
3, can be a kind of or several arbitrary proportion combination.
In the content of the present invention: described solvent comprises various phenols, alcohols, acetone, dimethyl formamide, N,N-DIMETHYLACETAMIDE, N-Methyl pyrrolidone, aliphatic hydrocarbon and aromatic hydrocarbon solvent.
In the content of the present invention: described insulating resin comprise vibrin, trihydroxyethyl isocyanuric acid ester (be THEIC, Sai Ke) modified polyester resin, polyester-imide, trihydroxyethyl isocyanuric acid ester (being THEIC) modification imines, urethane, polyamidoimide.
In the content of the present invention: described properties-correcting agent is long-chain compound and the ester thereof that contains amino, hydroxyl, carboxyl.
In the content of the present invention: described properties-correcting agent is alpha-amino group propyl-triethoxysilicane (being KH550), Racemic glycidol oxygen propyl trimethoxy silicane (being KH560) or titanic acid ester.
In the content of the present invention: described insulating resin is reasonable to be polyester-imide, trihydroxyethyl isocyanuric acid ester (being THEIC) modified poly ester imines.
In the content of the present invention: described solvent ratio is preferably cresols, dimethylbenzene, ethanol, can one or more use simultaneously.
The wire enamel of the preparation method of content nano modification corona-resistant wire enamel of the present invention preparation is used for enameled wire coating, it is characterized in that: enameled wire coating be double-deck or three layers compound.
The preparation of employed insulating resin is undertaken by method in common in the content of the present invention, and commercial general insulating resin is also applicable.
Organic solvent described in the content of the present invention is cresols, xylenol; Toluene, dimethylbenzene; Methyl alcohol, ethanol, butanols, dimethyl formamide, N,N-DIMETHYLACETAMIDE, N-Methyl pyrrolidone.
The structural formula of the trihydroxyethyl isocyanuric acid ester (THEIC) described in the content of the present invention is:
Compared with prior art, the present invention has following characteristics and effect:
(1) dispersion state of nano material in insulating resin and the stability of nano material/insulating resin mixture have been improved, directly be distributed to nano material in the insulating resin by common method, though through fully disperseing, nanoparticle still exists with the form of reuniting, and mixture may be separated out in layering, produce precipitation, the wire enamel of making by the preparation method of a kind of wire enamel of anti-corona of the present invention, nanoparticle is uniform nano-dispersed attitude in insulating resin, lacquer liquid stable storing does not produce precipitation.Its correlated SEM photo is referring to accompanying drawing 1-2.
(2) snappiness and the sticking power of wire enamel have been improved, have more actual use meaning, the insulated wire of anti-corona that both can be used to coat three coatings by the wire enamel of anti-corona of the present invention's preparation, also can be used to coat the insulated wire of anti-corona of two coatings, and the wire enamel that adopts direct method to prepare, the mechanical property variation of paint film, must coating the outside add and be coated with one deck supercoat;
(3) the inventive method prepares the high-performance wire enamel of anti-the corona, has every performance that good preservation stability, corona resistance, adhesivity and high-performance wire enamel are had.When coating the enameled wire of anti-the corona, being priming paint with the general wire enamel of common commercial, is that finish paint coats bilayer or three layers of compound enameled wire of anti-the corona with corona-resistant wire enamel provided by the invention; As making alternating-current variable frequency motor, its work-ing life can be prolonged greatly.
(4) production technique is simple, and is practical.
Description of drawings
Fig. 1 is that existing dispersing method promptly directly joins nano material in the insulating resin through the long-time SEM photo that disperses the dispersion state of back nanoparticle;
Fig. 2 is to use the SEM photo of the dispersion state of the resulting nanoparticle of dispersing method of the present invention.
Embodiment
1. the preparation of the wire enamel of anti-the corona
Comparative example 1:
With the general polyester-imide enameled wire of commerce (or claiming insulated wire) lacquer (as the DF-127 of Sichuan Dongfang Insulation Material Co., Ltd's production) is priming paint, for finish paint coats the two-layer compound insulated wire, the film thickness ratio is polyamidoimide wire enamel (as the DF-595 of Sichuan Dongfang Insulation Material Co., Ltd's production): bottom/surface layer=7/3.
Comparative example 2:
(1) 100 parts of DF-127 polyester-imide wire enamels (amount of solid 40%) and 14 parts of nano-titanium oxides are mixed, adopt the method for high speed shear fully to disperse, with general wire enamel thinner viscosity and amount of solid are adjusted to acceptability limit and get final product.
(2) be that the middle layer lacquer coats three layers of composite electromagnetic line with the lacquer sample that makes, priming paint is commercial general DF-127 polyester-imide wire enamel, finish paint is commercial general DF-595 polyamidoimide wire enamel, and the film thickness ratio is: bottom/middle layer/surface layer=3.5/4.5/2
(3) with the general DF-127 polyester-imide wire enamel priming paint of commerce, the lacquer that comparative example 2 makes coats the two-layer compound enameled wire for finish paint, and the film thickness ratio is: bottom/surface layer=8/2
Embodiment 1:
A kind of preparation method of nano modification corona-resistant wire enamel, be made up of the following step:
(1) nano material is disperseed: get 14 parts of (weight, back with) nano-titanium oxides, add 70 parts of organic solvents (cresols: dehydrated alcohol=6: 4), at room temperature adopt the method for high speed shear that inorganic oxide is dispersed to and be uniform nano-dispersed attitude;
(2) nano-material modified: as to add 0.6 part of properties-correcting agent KH550 again,, obtain modified Nano material paste emulsion 120 ℃ of reactions 1.5 hours;
(3) preparation of nano material/insulating resin mixture: 100 parts of DF-127 polyester imine resins (amount of solid 40%) are added in the modified Nano material paste, be heated to 120 ℃, be incubated 2.0 hours down at 120 ℃;
(4) preparation of corona-resistant wire enamel: cool to 70 ℃ then, (composition, consumption and the technology of the wire enamel general with having commerce now are consistent, slightly), stir and promptly obtain the nano modification corona-resistant wire enamel to add the required various additives of wire enamel.
The lacquer that makes coats insulated wire by the method for comparative example 1.
Embodiment 2:
(1) nanoparticle consist of 1.75 parts of nano zine oxides, 0.7 part of nano silicon-based oxide, 11.55 parts of nano-titanium oxides, all the other are identical with embodiment 1, omit.
(2) lacquer that makes coats three layers of composite electromagnetic line by the method for comparative example.
(3) lacquer that makes with embodiment 2 is a middle layer lacquer, coats the two-layer compound insulated wire by the method for comparative example 2.
The wire enamel of anti-corona technical indicator of pressing comparative example 2, embodiment 1,2 preparations is as follows:
Viscosity: 20 ℃, 500～800mPas
Solids content: 1.0 gram samples, 200 ℃, 1.0h, 〉=35%
2. the insulated wire of anti-the corona coats
Be coated with line equipment: the horizontal thread test machine that is coated with of Italian SICME SEL-SP,
The vertical line machine that is coated with of Austria MAG VN6/2H.
Furnace temperature: 500～700 ℃
The speed of a motor vehicle: 30-40m/min
Japanning road number: the end/in/face=4-6/3-5/2-3
Priming paint: commercial general DF-127 polyester-imide wire enamel
Middle layer lacquer: the lacquer that comparative example 1～2, embodiment 1～3 make
Finish paint: commercial general DF-595 polyamidoimide wire enamel
Japanning mode: mould or felt
Line footpath: Ф 0.800mm
The performance comparison such as the following table of the insulated wire of anti-corona that the wire enamel of anti-corona for preparing by comparative example 1,2, embodiment 1,2 coats:
| Project name | Comparative example 1 | Comparative example 2 | Embodiment 1 | Embodiment 2 | |||
| Lacquer sample performance | Homogeneous transparent | Delaminating deposition | Stable | Stable | Stable | ||
| Line sample performance | Double-deck | Double-deck | Three layers | Three layers | Double-deck | Three layers | |
| Outward appearance | ??OK | ????OK | ????OK | ??OK | Qualified | ||
| Snappiness and sticking power | |||||||
| Pole is reeled | ??D | Paint film cracking | ????D | ????D | ??D | ??D | |
| Jerk disconnected | Qualified | ????× | ????× | Qualified | Qualified | Qualified | |
| Heat is dashed, and 220 ℃, 30min | ??2D | ????× | ????2D | ????2D | ??2D | ??2D | |
| Softening puncture, 320 ℃ | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified | |
| The unidirectional lacquer of scraping, N | On average | ??17.5 | ????19.3 | ????17.9 | ????18.4 | ??19.5 | ??17.5 |
| Minimum | ??10.2 | ????11.6 | ????12.1 | ????11.5 | ??12.3 | ??11.2 | |
| Voltage breakdown, KV | ??11.5 | ????10.5 | ????10.3 | ????12.8 | ??12.5 | ??11.8 | |
| Film integrity 30m | ??0 | ????10 | ????5 | ????0 | ??0 | ??0 | |
| The anti-corona life-span, min | ??3 | ????1 | ????9 | ????55 | ??125 | ??150 | |
1.3 the performance of the line sample that coats
The test of line sample traditional performance is undertaken by the relevant regulations of GB6109.11-90, and the test condition in anti-corona life-span is: rise time of a pulse, 25ns; Voltage, 3500V; Frequency, 20KHz; The duty factor, 50%; Temperature, 130 ℃.
Embodiment 3:
A kind of preparation method of nano modification corona-resistant wire enamel, be made up of the following step:
(1) nano material is disperseed: get 20 parts of (weight, back with) nano aluminium oxides, add 100 parts of organic solvents (cresols: dehydrated alcohol=1: 1), at room temperature adopt the method for high speed shear that inorganic oxide is dispersed to and be uniform nano-dispersed attitude;
(2) nano-material modified: as to add 1.0 parts of properties-correcting agent KH560 again,, obtain modified Nano material paste emulsion 140 ℃ of reactions 3 hours;
(3) preparation of nano material/insulating resin mixture: 100 parts of trihydroxyethyl isocyanuric acid ester modified poly ester imide resins (amount of solid 40%) are added in the modified Nano material paste, be heated to 120 ℃, be incubated 6 hours down at 120 ℃;
(4) preparation of corona-resistant wire enamel: cool to 70 ℃ then, (composition, consumption and the technology of the wire enamel general with having commerce now are consistent, slightly), stir and promptly obtain the nano modification corona-resistant wire enamel to add the required various additives of wire enamel.
All the other are identical with embodiment 1, omit.
Embodiment 4:
A kind of preparation method of nano modification corona-resistant wire enamel, be made up of the following step:
(1) nano material is disperseed: get 15 parts of (weight, back are together) nanometer Cr
2O
3, add 90 parts of organic solvents (cresols: dimethylbenzene: dehydrated alcohol=1: 1: 1), at room temperature adopt the method for high speed shear that inorganic oxide is dispersed to and be uniform nano-dispersed attitude;
(2) nano-material modified: as to add 0.7 part of properties-correcting agent KH550 again,, obtain modified Nano material paste emulsion 110 ℃ of reactions 2 hours;
(3) preparation of nano material/insulating resin mixture: 75 parts of trihydroxyethyl isocyanuric acid ester modified poly ester imide resins (amount of solid 40%) are added in the modified Nano material paste, be heated to 100 ℃, be incubated 5 hours down at 100 ℃;
All the other are identical with embodiment 1, omit.
Embodiment 5:
A kind of preparation method of nano modification corona-resistant wire enamel, be made up of the following step:
(1) nano material is disperseed: get 10 parts of (weight, back with) nanometer SiN, add 80 parts of organic solvent dimethyl formamides, at room temperature adopt the method for high speed shear that inorganic oxide is dispersed to and be uniform nano-dispersed attitude;
(2) nano-material modified: as to add 0.6 part of properties-correcting agent KH550 again,, obtain modified Nano material paste emulsion 100 ℃ of reactions 1.5 hours;
(3) preparation of nano material/insulating resin mixture; 70 parts of trihydroxyethyl isocyanuric acid ester modified polyester resins (amount of solid 40%) are added in the modified Nano material paste, be heated to 110 ℃, be incubated 4 hours down at 110 ℃;
All the other are identical with embodiment 1, omit.
Embodiment 6:
A kind of preparation method of nano modification corona-resistant wire enamel, be made up of the following step:
(1) nano material is disperseed: get 5 parts of (weight, back with) nano SiCs, add 60 parts of organic solvents (cresols: dimethylbenzene: dehydrated alcohol=1: 1: 1), at room temperature adopt the method for high speed shear that inorganic oxide is dispersed to and be uniform nano-dispersed attitude;
(2) nano-material modified: as to add 0.5 part of properties-correcting agent KH560 again,, obtain modified Nano material paste emulsion 90 ℃ of reactions 2.5 hours;
(3) preparation of nano material/insulating resin mixture: 60 parts of trihydroxyethyl isocyanuric acid ester modified poly ester imide resins (amount of solid 40%) are added in the modified Nano material paste, be heated to 90 ℃, be incubated 5 hours down at 90 ℃;
All the other are identical with embodiment 1, omit.
Embodiment 7:
A kind of preparation method of nano modification corona-resistant wire enamel, be made up of the following step:
(1) nano material is disperseed: get 1 part of (weight, back are together) nano-TiO
2, add 3 parts of organic solvent-acetones, at room temperature adopt the method for high speed shear that inorganic oxide is dispersed to and be uniform nano-dispersed attitude;
(2) nano-material modified: as to add 0.1 part of properties-correcting agent KH560 again,, obtain modified Nano material paste emulsion 50 ℃ of reactions 1 hour;
(3) preparation of nano material/insulating resin mixture: 60 parts of vibrin (amount of solid 40%) are added in the modified Nano material paste, be heated to 70 ℃, be incubated 3 hours down at 70 ℃;
All the other are identical with embodiment 1, omit.
Embodiment 8:
A kind of preparation method of nano modification corona-resistant wire enamel, be made up of the following step:
(1) nano material is disperseed: get 5 parts of (weight, back are together) nanometer SiO
2, add 30 parts of organic solvent N-Methyl pyrrolidone, at room temperature adopt the method for high speed shear that inorganic oxide is dispersed to and be uniform nano-dispersed attitude;
(2) nano-material modified: as to add 0.3 part of properties-correcting agent KH550 again,, obtain modified Nano material paste emulsion 80 ℃ of reactions 1.5 hours;
(3) preparation of nano material/insulating resin mixture: 80 parts of ester modified imines of trihydroxyethyl cyamelide (amount of solid 40%) are added in the modified Nano material paste, be heated to 90 ℃, be incubated 4 hours down at 90 ℃;
All the other are identical with embodiment 1, omit.
Embodiment 9:
A kind of preparation method of nano modification corona-resistant wire enamel, be made up of the following step:
(1) nano material is disperseed: get 10 parts of (weight, back are together) nanometer CaCO
3, add 90 parts of organic solvents (cresols: dimethylbenzene: dehydrated alcohol=1: 1: 1), at room temperature adopt the method for high speed shear that inorganic oxide is dispersed to and be uniform nano-dispersed attitude;
(2) nano-material modified: as to add 0.9 part of properties-correcting agent KH560 again,, obtain modified Nano material paste emulsion 130 ℃ of reactions 2 hours;
(3) preparation of nano material/insulating resin mixture: 70 parts of polyester-imides (amount of solid 40%) are added in the modified Nano material paste, be heated to 110 ℃, be incubated 3.5 hours down at 110 ℃;
All the other are identical with embodiment 1, omit.
The invention is not restricted to the foregoing description, content of the present invention is described all can be implemented, and has described good result.
Claims (10)
1, a kind of preparation method of nano modification corona-resistant wire enamel is characterized in that comprising the following steps:
(1) nano material is disperseed: get 1～20 part of (weight, back are together) inorganic oxide nanoparticles, add 3～100 parts of organic solvents, inorganic oxide is dispersed to is uniform nano-dispersed attitude;
(2) nano-material modified: as to add 0.1～1.0 part of properties-correcting agent again,, obtain the modified Nano material paste 50～140 ℃ of reactions 1～3 hour;
(3) preparation of nano material/insulating resin mixture: 60～100 part 40% insulating resin is added in the modified Nano material paste, under 70 ℃～120 ℃ condition, reacted 3～6 hours.
2, by the preparation method of the described nano modification corona-resistant wire enamel of claim 1, it is characterized in that comprising the following steps:
(1) nano material is disperseed: get 5～15 parts of inorganic oxide nanoparticles, add 15～70 parts of organic solvents, inorganic oxide is dispersed to is uniform nano-dispersed attitude;
(2) nano-material modified: as to add 0.5～0.7 part of properties-correcting agent again,, obtain the modified Nano material paste 50～140 ℃ of reactions 1～3 hour;
(3) preparation of nano material/insulating resin mixture: 60～75 part 40% insulating resin is added in the modified Nano material paste, under 70 ℃～120 ℃ condition, reacted 3～6 hours.
3, by the preparation method of claim 1 or 2 described nano modification corona-resistant wire enamels, it is characterized in that: described inorganic oxide nanoparticles is Cr
2O
3, SiN, SiC, TiO
2, Al
2O
3, ZnO, SiO
2, CaCO
3, can be a kind of or several arbitrary proportion combination.
4, by the preparation method of claim 1 or 2 described nano modification corona-resistant wire enamels, it is characterized in that: described solvent comprises various phenols, alcohols, acetone, dimethyl formamide, N,N-DIMETHYLACETAMIDE, N-Methyl pyrrolidone, aliphatic hydrocarbon and aromatic hydrocarbon solvent.
5, by the preparation method of claim 1 or 2 described nano modification corona-resistant wire enamels, it is characterized in that: described insulating resin comprises vibrin, trihydroxyethyl isocyanuric acid ester modified polyester resin, polyester-imide, the ester modified imines of trihydroxyethyl cyamelide, urethane, polyamidoimide.
6, by the preparation method of claim 1 or 2 described nano modification corona-resistant wire enamels, it is characterized in that: described properties-correcting agent is long-chain compound and the ester thereof that contains amino, hydroxyl, carboxyl.
7, by the preparation method of the described nano modification corona-resistant wire enamel of claim 6, it is characterized in that: described properties-correcting agent is alpha-amino group propyl-triethoxysilicane, Racemic glycidol oxygen propyl trimethoxy silicane or titanic acid ester.
8, by the preparation method of the described nano modification corona-resistant wire enamel of claim 5, it is characterized in that: described insulating resin is polyester-imide, trihydroxyethyl isocyanuric acid ester modified poly ester imines.
9, by the preparation method of claim 1 or 2 described nano modification corona-resistant wire enamels, it is characterized in that: described solvent is cresols, dimethylbenzene, ethanol, can one or more use simultaneously.
10, the wire enamel by the preparation method of claim 1 or 2 described nano modification corona-resistant wire enamels preparation is used for enameled wire coating, it is characterized in that: enameled wire coating be double-deck or three layers compound.
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| CN 200310111189 CN1240795C (en) | 2003-12-12 | 2003-12-12 | Preparation method of nanometer modified corona-tolerant enamel of enameled wire |
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| CN 200310111189 CN1240795C (en) | 2003-12-12 | 2003-12-12 | Preparation method of nanometer modified corona-tolerant enamel of enameled wire |
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| CN102325817A (en) * | 2009-02-20 | 2012-01-18 | 亚兰特斯有限公司 | The welding wire enamel of environmental protection |
| CN102532605A (en) * | 2011-12-19 | 2012-07-04 | 桂林电器科学研究院 | Corona-resistant slurry and preparation method thereof |
| CN102708953A (en) * | 2011-03-28 | 2012-10-03 | 日立卷线株式会社 | Insulated wire |
| CN102732147A (en) * | 2012-06-19 | 2012-10-17 | 汕头市天方达新材料科技有限公司 | Preparation method for nanometer mesoporous particle modified corona resistance wire enamel |
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| CN111508639A (en) * | 2020-04-14 | 2020-08-07 | 苏州巨峰电气绝缘***股份有限公司 | ATF oil-resistant corona-resistant enameled wire for electric automobile motor and preparation method thereof |
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