CN103275609A - Preparation method of polyurethane enameled-wire paint - Google Patents
Preparation method of polyurethane enameled-wire paint Download PDFInfo
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- CN103275609A CN103275609A CN2013101289461A CN201310128946A CN103275609A CN 103275609 A CN103275609 A CN 103275609A CN 2013101289461 A CN2013101289461 A CN 2013101289461A CN 201310128946 A CN201310128946 A CN 201310128946A CN 103275609 A CN103275609 A CN 103275609A
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- blocked isocyanate
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Abstract
The invention relates to a preparation method of polyurethane enameled-wire paint. The polyurethane enameled-wire paint is straight-welding welding slag-free polyurethane enameled-wire paint. The preparation method comprises that polyester polyol resin, polyurethane blocked resin, one or more solvents and a catalyst are synthesized into the polyurethane enameled-wire paint, wherein use amounts of the polyester polyol resin and the polyurethane blocked resin are proportioned according to a weight ratio of blocked isocyanate group to hydroxyl of 1.0-1.6; the one or more solvents are selected from methylphenol, xylenol, phenol, solvent oil and xylene; the catalyst is one of zinc isoocatanoate, dibutyltin dilaurate and a 576 catalyst; and the weight of the catalyst is 1-5% of the weight of a solid component of the polyurethane enameled-wire paint. The enameled-wire treated by the polyurethane enameled-wire paint does not produce welding slag in tin-soldering welding.
Description
The application is that application number is: 201110154590.X, the applying date is: on June 9th, 2011, invention and created name is divided an application for " preparation method's of the no welding slag polyurethane wire enamel of straight weldering ".
Technical field
The present invention relates to a kind of preparation method of wire enamel, particularly relate to the preparation method that a kind of straight weldering does not have the polyurethane wire enamel of welding slag.
Background technology
Enameled wire is the requisite main raw of electrical equipment, electronic product, and by the types of conductors branch, enameled wire has copper enameled wire, aluminium enamel-covered wire, copper-in-aluminum enameled wire etc. at present, no matter which kind of enameled wire all must be made insulation layer with wire enamel.
Polyurethane wire enamel has straight weldering, be that other wire enamel is unexistent, namely be that enameled wire after coating with it is will weld the time, paint film need not be removed and just scolding tin can be directly carried out, this is the peculiar character of polyurethane structural, its polyurethane high molecule structure of paint film under hot conditions can be decomposed and fragmented into small molecules, and small molecules breaks away from the ground of enameled wire, thereby enameled wire just can weld.
This straight weldering of polyurethane wire enamel has brought convenience for the automatization high speed production of electronics, electrical equipment, has improved industrialized efficient.But, the enameled wire that the polyurethane wire enamel of present China coats all can produce welding slag when straight weldering, can cause problems such as " rosin joints " like this, in the time of will welding in the circuit board for some electronic products, meeting obstruction enameled wire passes the aperture on the wiring board, can't carry out automatic production, influence production efficiency.So, need a kind of straight weldering not have the welding slag polyurethane wire enamel, when welding, can not produce welding slag with the enameled wire of its production.
Summary of the invention
The invention provides a kind of preparation method that straight weldering does not have the welding slag polyurethane wire enamel that has.
For solving the problems of the technologies described above, straight weldering of the present invention does not have welding slag polyurethane wire enamel preparation method, comprising: use polyester polyol resin, urethane sealing resin, solvent, catalyzer to synthesize; Wherein:
The consumption of described polyester polyol resin and urethane sealing resin is allocated according to the ratio of blocked isocyanate base and hydroxyl, and the blocked isocyanate base is 1.0～1.6 than the part by weight of hydroxyl;
Described solvent comprises: one or more in cresols (isomers), xylenol (isomers), phenol, solvent oil, the dimethylbenzene;
Described catalyzer comprises: a kind of in isocaprylic acid zinc, dibutyl tin laurate, 576 catalyzer, the weight of described catalyzer accounts for solid part 1%～5% of wire enamel.
Described polyester polyol resin is by behind the synthetic low-molecular-weight polyester of trivalent alcohol, dibasic alcohol, diprotic acid and second catalyzer, uses isocyanate-modified again.
The mol ratio of described trivalent alcohol and diprotic acid is 0.5～0.7, and the mol ratio of described dibasic alcohol and diprotic acid is 0.7～1.0, and the mol ratio of described isocyanic ester and diprotic acid is 0.15～0.25.
Described trivalent alcohol comprises: one or both in TriMethylolPropane(TMP), the glycerol (glycerine).
Described dibasic alcohol comprises: ethylene glycol, neopentyl glycol, propylene glycol, 2-methyl isophthalic acid, one or more in the ammediol.
Described diprotic acid comprises: one or more in terephthalic acid, m-phthalic acid, phthalic anhydride, the adipic acid.
Described second catalyzer comprises: one or more in zinc acetate, isocaprylic acid zinc, positive butyl (tetra) titanate, the dibutyl tin laurate.
Described isocyanic ester comprises: pure MDI(4,4-'-diphenylmethane diisocyanate), carbodiimide modification MDI(liquefied mdi) in one or both.
After described urethane sealing resin is TriMethylolPropane(TMP) and pure MDI reaction, form with phenol block.
The sealing of described urethane sealing resin comprises with phenol: one or both in cresols (isomers), the xylenol.
The mol ratio of the described urethane sealing used pure MDI of resin and trivalent alcohol is 2～3.
Should directly weld no welding slag polyurethane wire enamel in the preparation, and comprise and carry out following steps successively:
Drop into polyester polyol resin, urethane sealing resin, solvent, catalyzer, below 60 ℃, stir more than 6 hours.
Described polyester polyol resin comprises when prepared and carries out following steps successively:
Drop into trivalent alcohol, dibasic alcohol, diprotic acid and second catalyzer, heat up, 160 ℃ to 170 ℃ were reacted 1 hour, 170-180 ℃ was reacted 1 hour, 180-190 reaction 3 hours, 190-200 ℃ is lower than 8mgKOH/g until acid number, adds cresols then, cool to 150 ℃, drop into MDI(guarantees at 150-155 ℃ in batches), 150-155 ℃ of insulation 1 hour, add solvent, stirred 4 hours at 90-100 ℃, dilute.
Described urethane sealing resin comprises when prepared and carries out following steps successively:
Drop into cresols (or xylenol), MDI, heat up, 125-130 ℃ of reaction 1 hour, add the cresol liquor (dissolving in advance evenly) of TriMethylolPropane(TMP), heat up, 150-155 ℃ of insulation 1 hour, cooling added solvent cut.
Embodiment
Below in conjunction with example the present invention is further described, but is not limited to this.Quantity in the following example formulations all refers to weight part.
One, the preparation of polyester polyol resin
1, prescription sees Table 1
Table 1
The meaning of abridging in the table 1: GL----glycerine, TMP----TriMethylolPropane(TMP), EG----ethylene glycol, MPG----2-methyl isophthalic acid, ammediol, NPG----neopentyl glycol, IPA----m-phthalic acid, BC----phthalic anhydride, the positive butyl (tetra) titanate of TBT----.
2, preparation technology
Drop into trivalent alcohol, dibasic alcohol, diprotic acid and catalyzer, heat up, 160 ℃ to 170 ℃ were reacted 1 hour, 170-180 ℃ was reacted 1 hour, 180-190 reaction 3 hours, 190-200 ℃ is lower than 8mgKOH/g until acid number, adds cresols then, cool to 150 ℃, drop into MDI(guarantees at 150-155 ℃ in batches), 150-155 ℃ of insulation 1 hour, add solvent, stirred 4 hours at 90-100 ℃, dilute.
Two, the preparation of urethane sealing resin
In the there-necked flask of 1000ml, drop into 100 gram cresols, 143 gram xylenols, 152 gram MDI heated up, 125-130 ℃ of reaction 1 hour, the cresol liquor (dissolving evenly at 60-80 ℃ with 21.7 gram TriMethylolPropane(TMP)s and 73.3 gram cresols in advance) that adds 105 gram TriMethylolPropane(TMP)s, heat up, in 150-155 ℃ of insulation 1 hour, cooling, get 500 gram urethane sealing resins, this resin shelf-stable.
Three, a kind of have a preparation that straight weldering does not have the welding slag polyurethane wire enamel
1, prescription is as table 2
Table 2
2, production method: drop into polyester polyol, urethane sealing resin, catalyzer, cresols, dimethylbenzene, stirred 6 hours down at 60 ℃.
3, the present invention is coated with Wiring technology such as table 3
Table 3
By table 2 result as can be known, the polyurethane wire enamel that the present invention produces has straight weldering and does not have welding slag.
Claims (1)
1. the preparation method of the no welding slag polyurethane wire enamel of straight weldering is characterized in that comprising: use polyester polyol resin, blocked isocyanate based polyurethanes resin, solvent, catalyzer to synthesize;
Wherein:
The consumption of described polyester polyol resin and blocked isocyanate based polyurethanes resin is allocated according to the ratio of blocked isocyanate base and hydroxyl, and the part by weight of blocked isocyanate base and hydroxyl is 1.0～1.6;
Solvent for use comprises: one or more in cresols, xylenol, phenol, solvent oil, the dimethylbenzene;
Catalyst system therefor comprises: a kind of in isocaprylic acid zinc, the dibutyl tin laurate, the weight of catalyzer account for wire enamel solid part 1%～5%;
Described polyester polyol resin is by behind the synthetic low-molecular-weight polyester of trivalent alcohol, dibasic alcohol, diprotic acid and second catalyzer, forms with isocyanate-modified again;
The mol ratio of described trivalent alcohol and diprotic acid is 0.5～0.7, and the mol ratio of dibasic alcohol and diprotic acid is 0.7～1.0, and the mol ratio of isocyanic ester and diprotic acid is 0.15～0.25;
Described trivalent alcohol comprises: one or both in TriMethylolPropane(TMP), the glycerol;
Described dibasic alcohol comprises: ethylene glycol, neopentyl glycol, propylene glycol, 2-methyl isophthalic acid, one or more in the ammediol;
Described diprotic acid comprises: one or more in terephthalic acid, m-phthalic acid, phthalic anhydride, the adipic acid;
Described second catalyzer comprises: one or more in zinc acetate, isocaprylic acid zinc, positive butyl (tetra) titanate, the dibutyl tin laurate;
Described isocyanic ester comprises: one or both among pure MDI, the carbodiimide modification MDI;
During preparation, after dropping into polyester polyol resin, blocked isocyanate based polyurethanes resin, solvent, catalyzer successively, below 60 ℃, stir more than 6 hours;
Described blocked isocyanate based polyurethanes resin may further comprise the steps when prepared successively:
Drop into cresols, pure MDI, heat up, 125-130 ℃ of reaction 1 hour, add the cresol liquor of TriMethylolPropane(TMP), heat up, 150-155 ℃ of insulation 1 hour, cooling added solvent cut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310128946.1A CN103275609B (en) | 2011-06-09 | 2011-06-09 | Preparation method of polyurethane enameled-wire paint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310128946.1A CN103275609B (en) | 2011-06-09 | 2011-06-09 | Preparation method of polyurethane enameled-wire paint |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110154590 Division CN102268217B (en) | 2011-06-09 | 2011-06-09 | Method for preparing polyurethane enamelled wire paint allowing for direct welding without weld slag |
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| CN103275609A true CN103275609A (en) | 2013-09-04 |
| CN103275609B CN103275609B (en) | 2014-08-13 |
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| CN201310128946.1A Active CN103275609B (en) | 2011-06-09 | 2011-06-09 | Preparation method of polyurethane enameled-wire paint |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109096903A (en) * | 2018-07-27 | 2018-12-28 | 江苏恒兴制漆有限公司 | A kind of high-fire resistance wire enamel and preparation method thereof |
| CN109767876A (en) * | 2019-01-29 | 2019-05-17 | 珠海蓉胜超微线材有限公司 | A kind of production technology of beading polyurethane paint wire-covering |
| CN112143364A (en) * | 2020-09-12 | 2020-12-29 | 艾伦塔斯电气绝缘材料(铜陵)有限公司 | Ecological solvent type polyurethane wire enamel and preparation method thereof |
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| CN1394926A (en) * | 2002-07-16 | 2003-02-05 | 南京大学 | H-grade low-temp. beading polyurethane paint wire-covering paint |
| CN1597815A (en) * | 2004-08-03 | 2005-03-23 | 中国化工建设总公司常州涂料化工研究院 | Paint for H grade polyurethane enamelled wire with good saline water needle performace capable of directing welding at low temp. |
| CN1635038A (en) * | 2003-12-25 | 2005-07-06 | 左晓兵 | Method for preparing novel F level high speed polyurethane enamelled wire paint |
| CN101029203A (en) * | 2007-02-08 | 2007-09-05 | 常熟理工学院 | Production of cryogenic direct-welding polyurethane envelope without pinhole |
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2011
- 2011-06-09 CN CN201310128946.1A patent/CN103275609B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1394926A (en) * | 2002-07-16 | 2003-02-05 | 南京大学 | H-grade low-temp. beading polyurethane paint wire-covering paint |
| CN1635038A (en) * | 2003-12-25 | 2005-07-06 | 左晓兵 | Method for preparing novel F level high speed polyurethane enamelled wire paint |
| CN1597815A (en) * | 2004-08-03 | 2005-03-23 | 中国化工建设总公司常州涂料化工研究院 | Paint for H grade polyurethane enamelled wire with good saline water needle performace capable of directing welding at low temp. |
| CN101029203A (en) * | 2007-02-08 | 2007-09-05 | 常熟理工学院 | Production of cryogenic direct-welding polyurethane envelope without pinhole |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109096903A (en) * | 2018-07-27 | 2018-12-28 | 江苏恒兴制漆有限公司 | A kind of high-fire resistance wire enamel and preparation method thereof |
| CN109767876A (en) * | 2019-01-29 | 2019-05-17 | 珠海蓉胜超微线材有限公司 | A kind of production technology of beading polyurethane paint wire-covering |
| CN109767876B (en) * | 2019-01-29 | 2020-10-23 | 珠海蓉胜超微线材有限公司 | Production process of directly-welded polyurethane enameled wire |
| CN112143364A (en) * | 2020-09-12 | 2020-12-29 | 艾伦塔斯电气绝缘材料(铜陵)有限公司 | Ecological solvent type polyurethane wire enamel and preparation method thereof |
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| CN103275609B (en) | 2014-08-13 |
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Effective date of registration: 20171114 Address after: 244000 Tongling economic and Technological Development Zone, Anhui Patentee after: Elantas Electrical Insulation (Tongling) Co., Ltd. Address before: 213000 No. 2 patio Industrial Park, Luoyang Town, Wujin District, Changzhou, Jiangsu Patentee before: Changzhou Hongbo Paint Co., Ltd. |
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