CN102936451A - Preparation method of 180 grade polyurethane enamelled wire insulating paint used for ultra-fine wire - Google Patents
Preparation method of 180 grade polyurethane enamelled wire insulating paint used for ultra-fine wire Download PDFInfo
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- CN102936451A CN102936451A CN2011102345277A CN201110234527A CN102936451A CN 102936451 A CN102936451 A CN 102936451A CN 2011102345277 A CN2011102345277 A CN 2011102345277A CN 201110234527 A CN201110234527 A CN 201110234527A CN 102936451 A CN102936451 A CN 102936451A
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Abstract
The invention relates to 180 grade polyurethane enamelled wire insulating paint used for an ultra-fine wire. The insulating paint is prepared by the following components of 14-20 parts of an imide-modified polyester resin, 36-50 parts of a blocked isocyanate resin, 0.02 part of zinc acetate, 0.35-0.75 part of an amino condensation compound, 0.02-0.05 part of silicone oil, 0.2-0.6 part of acrylic ester, 17-27 parts of dimethylbenzene, 7-17 parts of phenol and 5 parts of n-butyl alcohol. High heat grade non-pinhole rapid direct-welding polyurethane enamelled wire insulating paint is produced by mixing paint with the above materials at a temperature of 60-70 DEG C. Compared with a conventional insulating paint, the enamelled wire insulating paint provided by the invention has good leveling property, and can meet the requirements of a production process with specification of 0.02 mm and production speed of 1500 m/min. The prepared enamelled wire has smooth and bright surfaces and has no shining points. The prepared enamelled wire has high a soft breakdown temperature which is higher than 260 DEG C. The prepared enamelled wire has good salt-water pinhole resistant performance and is resistant to knead and stretch salt-water pinholes in salt water. The prepared enamelled wire has good directly welding performance and is capable of being directly welded at a temperature of 375 DEG C. The prepared enamelled wire has wide process redundancy and is convenient for realizing stable process production.
Description
Technical field
The present invention relates to a kind of superfine wire with the preparation method of 180 level polyurethane enamelled wire insullac.
Background technology
Because the carbamate groups in the polyurethane wire enamel membrane structure at high temperature can decompose, thereby so that not needing to remove in advance paint film, just can directly not weld by the enameled wire of making, greatly simplified generating process, and polyurethane enamelled wire has the low characteristics of dielectric loss under high frequency, has therefore obtained using widely in all kinds of electronic devices and components.
Mainly take 130 grades and 155 grades as main, its cut through temperature is 170 ℃ and 200 ℃ to polyurethane enamelled wire insullac, and the polyester of equal thermal level and the cut through temperature of modified poly ester are 240 ℃ and 270 ℃, and both differ greatly.Thermal shock resistance properties is also not as good as polyester or the modified poly ester enameled wire of equal thermal level in addition.Therefore inapplicable for the demanding occasion of thermal characteristics.180 grades polyurethane enamelled wire insullac is with the imines five-ring its vibrin partly to be carried out modification, improves thermotolerance.Although this scheme has improved thermotolerance, because the pentacyclic rigid structure of imines makes the salt water resistance pinhole characteristics variation of enameled wire, and the levelling property of lacquer liquid is also not as conventional 130 grades and 155 grades of urethane.Be ultra micro line enameled wire below the 0.05mm for specific diameter, because production rate is very fast, production rate is generally at 500 ~ 2000m/min, and the time of curing is very short, only 0.1 ~ 0.5 second.Need corresponding paint to have better levelling property, better film-forming properties and rational solvent evaporation gradient.
Summary of the invention
The object of the invention is to satisfy production and the performance requriements of 180 level ultra polyurethane enamelled wires, a kind of line good work that is coated with is provided, the salt water resistance pinhole characteristics is good, and cut through temperature is high, and thermal level is that 180 grades superfine wire is with the preparation method of 180 level polyurethane enamelled wire insullac.
Purpose of the present invention is achieved through the following technical solutions: a kind of superfine wire is with 180 level polyurethane enamelled wire insullac, comprise that following composition modulation forms: 14～20 parts of imine modified vibrin, 36～50 parts of sealing isocyanate resins, 0.02 part zinc acetate, 0.35～0.75 part of amino condenses (best 0.55 part), 0.02～0.05 part of silicone oil (best 0.03 part), 0.2～0.6 part of acrylate (best 0.4 part), 17～27 parts of dimethylbenzene, 7～17 parts of phenol, 5 parts of propyl carbinols generate non-pinhole rapid direct-welding polyurethane enamelled wire insulating varnish with high heat grade 60～70 ℃ of paints.
On the such scheme basis, described imine modified vibrin makes by following step: first synthesizing polyester resin, with trimellitic acid 1,2-anhydride and 4,4 '-diaminodiphenylmethane is carried out modification, the vibrin that replaces the modification of partial glycerol synthesizing imine with TriMethylolPropane(TMP), the molar ratio of controlling five yuan of imide rings and dimethyl terephthalate (DMT) is 1:1.1～1:1.3, the mol ratio of polyvalent alcohol and dimethyl terephthalate (DMT) is 1:2～1:4, the mol ratio of trivalent alcohol and dibasic alcohol is 1:1, and the mol ratio of glycerine and TriMethylolPropane(TMP) is 1:1.5～1:2.5.
On the such scheme basis, described vibrin is the vibrin of synthesizing imine five-ring modification, make by following step: in reactor, drop into first ethylene glycol, glycerine and the zinc acetate that accounts for total charging capacity 0.01%, stirring is raised to 60 ℃ of still temperature and drops into TriMethylolPropane(TMP) (TMP) and dimethyl terephthalate (DMT) (DMT), progressively be warming up to 225 ℃, collect cut, when without cut, be cooled to 165 ℃, drop into trimellitic acid 1,2-anhydride and 4,4 '-diaminodiphenylmethane is warming up to 200 ℃, is cooled to 70 ℃ and adds meta-cresol when without cut, it is 40～48% vibrin that dimethylbenzene is diluted to solids content, be cooled to 50 ℃ for subsequent use.Solids content the best of vibrin is 44%.
On the such scheme basis, the isocyanate resin of described sealing makes by following step: with 10 parts in above-mentioned synthetic vibrin, 4 parts of TriMethylolPropane(TMP)s, 25 parts of meta-cresols, 27 parts of MDI adopt the synthetic sealing of single stage method isocyanate resin, add again 15 parts of meta-cresols, 10 parts of phenol, 9 parts of dimethylbenzene, being diluted to solids content is 40～48%.The solids content of best blocked isocyanate is 44%.
Described synthetic blocked isocyanate is as follows: drop into first described vibrin, TriMethylolPropane(TMP), meta-cresol in reactor, mixing control still temperature is below 45 ℃, add rapidly MDI, allow it naturally heat up, being heated to 128 ℃ stirred 3 hours, be cooled to 100 ℃, adding meta-cresol, phenol, dimethylbenzene, being diluted to solids content is 44% blocked isocyanate, be cooled to 50 ℃ for subsequent use.
On the such scheme basis, must adopt 2 during described synthetic blocked isocyanate, 6 '-MDI content is 100% MDI, heating in water bath to 80 ℃ before using is finished using after the fusing fast.
On the such scheme basis, described vibrin and blocked isocyanate are added in the reactor, add meta-cresol, dimethylbenzene, propyl carbinol, amino condenses, silicone oil and acrylate, generate superfine wires with 180 level polyurethane enamelled wire insullac 60～70 ℃ of paints.
Compared with prior art, the superfine wire made from the present invention is with 180 level polyurethane enamelled wire insullac:
(1) good leveling property, can satisfy specification is 0.02mm, and production rate is the manufacturing technique requirent of 1500m/min, and the enamelled wire surface of making is bright and clean, flashless point.
(2) the enameled wire cut through temperature of making is high.Press the IEC60851 standard testing, cut through temperature can reach more than 260 ℃.
(3) salt water resistance pin hole performance is good, stretching salt solution pin hole in anti-rubbing and the salt solution.
(4) directly weldering property is good, can be 375 ℃ of lower straight welderings.
(5) the technique remaining is wide, is convenient to realize sane explained hereafter.
Embodiment
Embodiment 1
According to the inventive method synthesizing polyester resin, vibrin for the modification of synthesizing imine five-ring, make by following step: elder generation drops into ethylene glycol, glycerine and accounts for the zinc acetate of total charging capacity 0.01% in reactor, stirring is raised to 60 ℃ of still temperature and drops into TMP and DMT, progressively be warming up to 225 ℃, collect cut, when without cut, be cooled to 165 ℃, drop into trimellitic acid 1,2-anhydride and 4,4 '-diaminodiphenylmethane is warming up to 200 ℃, is cooled to 70 ℃ and adds meta-cresol when without cut, it is 44% vibrin that dimethylbenzene is diluted to solids content, be cooled to 50 ℃ for subsequent use.Wherein the mol ratio of imines five-ring and DMT is 1:1.2.
According to the synthetic blocked isocyanate of the inventive method, as follows: in reactor, drop into first described vibrin, TriMethylolPropane(TMP), meta-cresol, mixing control still temperature is below 45 ℃, add rapidly MDI, allow it naturally heat up, be heated to 128 ℃ and stirred 3 hours, be cooled to 100 ℃, adding meta-cresol, phenol, dimethylbenzene, being diluted to solids content is 44% blocked isocyanate, be cooled to 50 ℃ for subsequent use.
Carry out paint according to the inventive method, in 14 parts of above-mentioned modified polyester resins and 36 parts of adding reactors of blocked isocyanate, add 0.02 part of zinc acetate, 17 parts of meta-cresols, 27 parts of dimethylbenzene, 5 parts of propyl carbinols, amino condenses, silicone oil and acrylate, generate superfine wires with 180 level polyurethane enamelled wire insullac 60～70 ℃ of paints.Wherein, the addition of controlling amino condenses is 0.55 part, and the silicone oil amount is 0.03 part, and acrylate is 0.4 part.Generate superfine wire with 180 level polyurethane enamelled wire insullac, solids content is 22%, and viscosity is 30 ℃ of 15 ~ 17 seconds@, is coated with 4 glasss.
Embodiment 2
According to embodiment 1 method synthesis modification vibrin, wherein the mol ratio of imines five-ring and DMT is 1:1.2; According to the synthetic blocked isocyanate of embodiment 1 method; Carry out paint according to embodiment 1 method, the adding proportion of controlling amino condenses is 0.35 part, and the silicone oil ratio is 0.04 part, and acrylate is 0.6 part.Generate superfine wire with 180 level polyurethane enamelled wire insullac, solids content is 22%, and viscosity is 30 ℃ of 15 ~ 17 seconds@, is coated with 4 glasss.
Embodiment 3
According to embodiment 1 method synthesizing polyester resin, wherein the mol ratio of imines five-ring and DMT is 1:1.1; According to the synthetic blocked isocyanate of embodiment 1 method; Carry out paint according to the inventive method, the adding proportion of controlling amino condenses is 0.75 part, and the silicone oil ratio is 0.03 part, and acrylate is 0.6 part.Generate superfine wire with 180 level polyurethane enamelled wire insullac, solids content is 22%, and viscosity is 30 ℃ of 15 ~ 17 seconds@, is coated with 4 glasss.
Embodiment 4
According to embodiment 1 method synthesizing polyester resin, wherein, the mol ratio of imines five-ring and DMT is 1:1.1.According to the synthetic blocked isocyanate of embodiment 1 method; Carry out paint according to embodiment 1 method, the adding proportion of controlling amino condenses is 0.55 part, and the silicone oil ratio is 0.02 part, and acrylate is 0.5 part.Generate superfine wire with 180 level polyurethane enamelled wire insullac, solids content is 22%, and viscosity is 30 ℃ of 15 ~ 17 seconds@, is coated with 4 glasss.
Embodiment 5
According to embodiment 1 method synthesizing polyester resin, wherein the mol ratio of imines five-ring and DMT is 1:1.3; According to the synthetic blocked isocyanate of embodiment 1 method; Carry out paint according to embodiment 1 method, the adding proportion of controlling amino condenses is 0.35 part, and the silicone oil ratio is 0.05 part, and acrylate is 0.2 part.Generate superfine wire with 180 level polyurethane enamelled wire insullac, solids content is 22%, and viscosity is 30 ℃ of 15 ~ 17 seconds@, is coated with 4 glasss.
Embodiment 6
According to embodiment 1 method synthesizing polyester resin, wherein the mol ratio of imines five-ring and DMT is 1:1.3; According to the synthetic blocked isocyanate of embodiment 1 method; Carry out paint according to embodiment 1 method, the adding proportion of controlling amino condenses is 0.75 part, and the silicone oil ratio is 0.03 part, and acrylate is 0.4 part.Generate superfine wire with 180 level polyurethane enamelled wire insullac, solids content is 22%, and viscosity is 30 ℃ of 15 ~ 17 seconds@, is coated with 4 glasss.
The preparation of enameled wire line-transect:
Be coated with line equipment: MAG HS0
Processing parameter:
The enameled wire specification is 0.028mm
Curing area: 480 ℃;
The speed of a motor vehicle: 1000 m/min
Japanning passage: 14
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 |
| Imines five-ring: DMT | 1:1.2 | 1:1.2 | 1:1.1 | 1:1.1 | 1:1.3 | 1：1.3 |
| Amino condenses | 0.55 part | 0.35 part | 0.75 part | 0.55 part | 0.35 part | 0.75 part |
| Silicone oil | 0.03 part | 0.04 part | 0.03 part | 0.02 part | 0.05 part | 0.03 part |
| Acrylate | 0.4 part | 0.6 part | 0.6 part | 0.5 part | 0.2 part | 0.4 part |
| Conductor diameter | 0.028 | 0.027 | 0.028 | 0.027 | 0.028 | 0.028 |
| External diameter | 0.033 | 0.033 | 0.032 | 0.034 | 0.034 | 0.033 |
| Surface quality | OK | OK | OK | OK | OK | OK |
| Voltage breakdown | 800 | 780 | 770 | 750 | 830 | 1050 |
| Straight weldering property | OK | OK | OK | OK | OK | OK |
| The softening puncture | 260℃ | 260℃ | 260℃ | 260℃ | 260℃ | 260℃ |
| Thermal shocking | OK | OK | OK | OK | OK | OK |
Annotate:
The test method of each test event is shone following execution:
Conductor diameter and enameled wire external diameter: according to IEC 60851.
Enamelled wire surface: detect by an unaided eye under fluorescent light.
Voltage breakdown: according to IEC 60851.
Straight weldering property: according to IEC 60851, wherein directly welding temperature is 375 ℃, and the time is 2 seconds.
The softening puncture: according to IEC 60851, wherein temperature is 260 ℃
Thermal shocking: according to IEC 60851, wherein caloric impact temperature is 200 ℃.
Claims (6)
1. a superfine wire is with 180 level polyurethane enamelled wire insullac, it is characterized in that comprising that following composition modulation forms: 14～20 parts of imine modified vibrin, 36～50 parts of sealing isocyanate resins, 0.02 part zinc acetate, 0.35～0.75 part of amino condenses, 0.02～0.05 part of silicone oil, 0.2～0.6 part of acrylate, 17～27 parts of dimethylbenzene, 7～17 parts of phenol or meta-cresol, 5 parts of propyl carbinols generate non-pinhole rapid direct-welding polyurethane enamelled wire insulating varnish with high heat grades 60～70 ℃ of paints.
2. superfine wire according to claim 1 is with 180 level polyurethane enamelled wire insullac, it is characterized in that, described imine modified vibrin makes by following step: first synthesizing polyester resin, with trimellitic acid 1,2-anhydride and 4,4 '-diaminodiphenylmethane is carried out modification, the vibrin that replaces the modification of partial glycerol synthesizing imine with TriMethylolPropane(TMP), the molar ratio of controlling five yuan of imide rings and dimethyl terephthalate (DMT) is 1:1.1～1:1.3, the mol ratio of polyvalent alcohol and dimethyl terephthalate (DMT) is 1:2～1:4, the mol ratio of trivalent alcohol and dibasic alcohol is 1:1, and the mol ratio of glycerine and TriMethylolPropane(TMP) is 1:1.5～1:2.5.
3. superfine wire according to claim 1 and 2 is with 180 level polyurethane enamelled wire insullac, it is characterized in that, described vibrin makes by following step: drop into first ethylene glycol in reactor, glycerine and the zinc acetate that accounts for total charging capacity 0.01%, stirring is raised to 60 ℃ of temperature of reaction kettle and drops into TriMethylolPropane(TMP) and dimethyl terephthalate (DMT), progressively be warming up to 225 ℃, collect cut and get the synthesizing polyester resin, when without cut, be cooled to 165 ℃ and drop into trimellitic acid 1,2-anhydride and 4,4 '-diaminodiphenylmethane, be warming up to 200 ℃, when without cut, be cooled to 70 ℃ and add meta-cresol, it is 44% vibrin that dimethylbenzene is diluted to solids content, be cooled to 50 ℃ for subsequent use.
4. superfine wire according to claim 1 is with 180 level polyurethane enamelled wire insullac, it is characterized in that, the isocyanate resin of described sealing makes by following step: with 10 parts in above-mentioned synthetic vibrin, 4 parts of TriMethylolPropane(TMP)s, 25 parts of meta-cresols, 27 parts of diphenylmethanediisocyanates, adopt the synthetic sealing of single stage method isocyanate resin, add 15 parts of meta-cresols, 10 parts of phenol, 9 parts of dimethylbenzene, being diluted to solids content is 40～48%.
5. superfine wire according to claim 4 is with 180 level polyurethane enamelled wire insullac, it is characterized in that, described synthetic blocked isocyanate is in the steps below: drop into first described vibrin, TriMethylolPropane(TMP), meta-cresol in reactor, the mixing control temperature of reaction kettle is below 45 ℃, add rapidly diphenylmethanediisocyanate, allow it naturally heat up, being heated to 128 ℃ stirred 3 hours, be cooled to 100 ℃, add meta-cresol, phenol, dimethylbenzene, be diluted to solids content and be 44% blocked isocyanate, be cooled to 50 ℃ for subsequent use.
According to claim 4 or 5 described superfine wires with 180 level polyurethane enamelled wire insullac, it is characterized in that, must adopt 2 during described synthetic blocked isocyanate, 6 '-MDI content is 100% diphenylmethanediisocyanate, heating in water bath to 80 ℃ before using is finished using after the fusing fast.
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| CN103965764A (en) * | 2014-04-15 | 2014-08-06 | 丹阳四达化工有限公司 | Synthetic method of polyester polyurethane wire enamel with high heat-resistant grade |
| CN104087142A (en) * | 2014-07-15 | 2014-10-08 | 王锶源 | Heat-resistant insulating paint |
| CN105985723A (en) * | 2015-02-05 | 2016-10-05 | 丹阳四达化工有限公司 | Polyesteramide imide wire enamel and preparation method thereof |
| CN110317533A (en) * | 2019-06-20 | 2019-10-11 | 迪马新材料科技（苏州）有限公司 | Environment-friendly type thermostable polyurethane wire enamel and the preparation method and application thereof |
| CN111548713A (en) * | 2020-05-21 | 2020-08-18 | 山东鲁泰控股集团有限公司石墨烯高分子复合材料研发中心 | High-temperature-resistant coating with electromagnetic shielding performance and preparation method thereof |
| CN111978843A (en) * | 2020-08-31 | 2020-11-24 | 安顺市乾辰谷材科技有限公司 | Insulating paint for FIW completely insulating wire at normal temperature |
| CN112661948A (en) * | 2020-11-18 | 2021-04-16 | 南通百川新材料有限公司 | Polyester polyol for producing high-heat-resistant-grade polyurethane wire enamel and preparation method thereof |
| CN114106687A (en) * | 2021-11-30 | 2022-03-01 | 瑞通高分子科技(浙江)有限公司 | LED photocuring insulating paint capable of being directly welded and preparation method thereof |
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| CN112661948A (en) * | 2020-11-18 | 2021-04-16 | 南通百川新材料有限公司 | Polyester polyol for producing high-heat-resistant-grade polyurethane wire enamel and preparation method thereof |
| CN114106687A (en) * | 2021-11-30 | 2022-03-01 | 瑞通高分子科技(浙江)有限公司 | LED photocuring insulating paint capable of being directly welded and preparation method thereof |
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Application publication date: 20130220 |