CN103275608B - Preparation method of enameled-wire paint - Google Patents
Preparation method of enameled-wire paint Download PDFInfo
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- CN103275608B CN103275608B CN201310128389.3A CN201310128389A CN103275608B CN 103275608 B CN103275608 B CN 103275608B CN 201310128389 A CN201310128389 A CN 201310128389A CN 103275608 B CN103275608 B CN 103275608B
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Abstract
The invention relates to a preparation method of enameled-wire paint. The preparation method realizes straight-welding welding slag-free polyurethane enameled-wire paint preparation. 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 coated with the polyurethane enameled-wire paint does not produce welding slag in tin-soldering.
Description
The application is that application number is: 201110154590.X, the applying date is: on June 9th, 2011, invention and created name is that < < directly welds dividing an application without the preparation method > > of welding slag polyurethane wire enamel.
Technical field
The present invention relates to a kind of preparation method of wire enamel, particularly relate to a kind of straight weldering without the preparation method of the polyurethane wire enamel of welding slag.
Background technology
Enameled wire is the requisite main raw of electrical equipment, electronic product, divides at present by types of conductors, and enameled wire has copper enameled wire, aluminium enamel-covered wire, copper-in-aluminum enameled wire etc., no matter which kind of enameled wire all must be made insulation layer with wire enamel.
Polyurethane wire enamel has straight weldering, that other wire enamel is unexistent, be that enameled wire after coating with it is when will weld, 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 departs from the ground of enameled wire, thereby enameled wire just can weld.
This straight weldering of polyurethane wire enamel, has brought convenience to the automatization high speed production of electronics, electrical equipment, has improved industrialized efficiency.But, the enameled wire that the polyurethane wire enamel of China coats at present 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, can hinder enameled wire through the aperture on wiring board, cannot carry out automatic production, affect production efficiency.So, need a kind of straight weldering without welding slag polyurethane wire enamel, with the enameled wire of its production, when welding, can not produce welding slag.
Summary of the invention
The invention provides and a kind ofly there is straight weldering without the preparation method of welding slag polyurethane wire enamel.
For solving the problems of the technologies described above, straight weldering of the present invention, without welding slag polyurethane wire enamel preparation method, comprising: use polyester polyol resin, polyurethane closed resin, solvent, catalyzer to synthesize; Wherein:
The consumption of described polyester polyol resin and polyurethane closed resin is allocated according to the ratio of blocked isocyanate base and hydroxyl, and 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, 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 after the synthetic low-molecular-weight polyester of trivalent alcohol, dibasic alcohol, diprotic acid and the second catalyzer, then uses isocyanate-modified.
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), glycerol (glycerine).
Described dibasic alcohol comprises: ethylene glycol, neopentyl glycol, propylene glycol, 2-methyl isophthalic acid, one or more in ammediol.
Described diprotic acid comprises: one or more in terephthalic acid, m-phthalic acid, phthalic anhydride, adipic acid.
Described the second catalyzer comprises: one or more in zinc acetate, isocaprylic acid zinc, positive butyl (tetra) titanate, dibutyl tin laurate.
Described isocyanic ester comprises: pure MDI(4,4-'-diphenylmethane diisocyanate), Carbodiimide-Modified MDI(liquefied mdi) in one or both.
Described polyurethane closed resin is, after TriMethylolPropane(TMP) reacts with pure MDI, with phenol block, to form.
The sealing of described polyurethane closed resin comprises with phenol: one or both in cresols (isomers), xylenol.
The mol ratio of described polyurethane closed resin pure MDI used and trivalent alcohol is 2～3.
This directly welds without welding slag polyurethane wire enamel in the preparation, comprises and carries out successively following steps:
Drop into polyester polyol resin, polyurethane closed resin, solvent, catalyzer, below 60 ℃, stir more than 6 hours.
Described polyester polyol resin comprises when prepared and carries out successively following steps:
Drop into trivalent alcohol, dibasic alcohol, diprotic acid and the second catalyzer, heat up, 160 ℃ to 170 ℃ are reacted 1 hour, 170-180 ℃ is reacted 1 hour, 180-190 reaction 3 hours, 190-200 ℃ until acid number, lower than 8mgKOH/g, then adds cresols, cool to 150 ℃, drop into MDI(guarantees at 150-155 ℃ in batches), 150-155 ℃ of insulation 1 hour, add solvent, at 90-100 ℃, stir 4 hours, dilute.
Described polyurethane closed resin comprises and carries out successively following steps when prepared:
Drop into cresols (or xylenol), MDI, heat up, 125-130 ℃ of reaction 1 hour, add the cresol liquor (being uniformly dissolved in advance) of TriMethylolPropane(TMP), heat up, 150-155 ℃ of insulation 1 hour, cooling, add solvent cut.
Embodiment
Below in conjunction with example, the invention will be further described, but be not limited to this.Quantity in following example formulations all refers to weight part.
One, the preparation of polyester polyol resin
1, formula is in Table 1
Table 1
The meaning of abridging in 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 ℃ are reacted 1 hour, 170-180 ℃ is reacted 1 hour, 180-190 reaction 3 hours, 190-200 ℃ until acid number, lower than 8mgKOH/g, then adds cresols, cool to 150 ℃, drop into MDI(guarantees at 150-155 ℃ in batches), 150-155 ℃ of insulation 1 hour, add solvent, at 90-100 ℃, stir 4 hours, dilute.
Two, the preparation of polyurethane closed resin
In the there-necked flask of 1000ml, drop into 100 grams of cresols, 143 grams of xylenols, 152 grams of MDI, heated up, 125-130 ℃ of reaction 1 hour, the cresol liquor (being uniformly dissolved at 60-80 ℃ with 21.7 grams of TriMethylolPropane(TMP)s and 73.3 grams of cresols in advance) that adds 105 grams of TriMethylolPropane(TMP)s, heat up, 150-155 ℃ of insulation 1 hour, cooling, obtain 500 grams of polyurethane closed resins, this resin shelf-stable.
Three, a kind of have straight weldering without the preparation of welding slag polyurethane wire enamel
1, formula is as table 2
Table 2
2, production method: drop into polyester polyol, polyurethane closed resin, catalyzer, cresols, dimethylbenzene, stir at 60 ℃ 6 hours.
3, the present invention is coated with Wiring technology as table 3
Table 3
As seen from the results in Table 2, the polyurethane wire enamel that the present invention produces, has straight weldering without welding slag.
Claims (1)
1. straight weldering, without a preparation method for welding slag polyurethane wire enamel, 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, dimethylbenzene;
Used catalyst comprises: a kind of in isocaprylic acid zinc, dibutyl tin laurate, the weight of catalyzer account for wire enamel solid part 1%～5%;
Described polyester polyol resin is by after the synthetic low-molecular-weight polyester of trivalent alcohol, dibasic alcohol, diprotic acid and the second catalyzer, then forms with isocyanate-modified;
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), glycerol;
Described dibasic alcohol comprises: ethylene glycol, neopentyl glycol, propylene glycol, 2-methyl isophthalic acid, one or more in ammediol;
Described diprotic acid comprises: one or more in terephthalic acid, m-phthalic acid, adipic acid;
Described the second catalyzer comprises: one or more in zinc acetate, isocaprylic acid zinc, positive butyl (tetra) titanate, dibutyl tin laurate;
Described isocyanic ester comprises: one or both in pure MDI, Carbodiimide-Modified MDI; When described polyester polyol resin is prepared, comprise the following steps successively: drop into trivalent alcohol, dibasic alcohol, diprotic acid and the second catalyzer, heat up, 160 ℃ to 200 ℃ reactions, until acid number, lower than 8mgKOH/g, adds cresols, cool to 150 ℃, drop into isocyanic ester in batches, 150-155 ℃ of insulation 1 hour, add solvent, dilute;
Described blocked isocyanate based polyurethanes resin comprises the following 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, add solvent cut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310128389.3A CN103275608B (en) | 2011-06-09 | 2011-06-09 | Preparation method of enameled-wire paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310128389.3A CN103275608B (en) | 2011-06-09 | 2011-06-09 | Preparation method of enameled-wire paint |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| 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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| Publication Number | Publication Date |
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| CN103275608A CN103275608A (en) | 2013-09-04 |
| CN103275608B true CN103275608B (en) | 2014-08-13 |
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| CN201310128389.3A Active CN103275608B (en) | 2011-06-09 | 2011-06-09 | Preparation method of enameled-wire paint |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103725155A (en) * | 2013-11-25 | 2014-04-16 | 铜陵天河特种电磁线有限公司 | Modified ABS (acrylonitrile butadiene styrene) wire enamel and preparation method thereof |
| 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 |
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 |
| 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 |
-
2011
- 2011-06-09 CN CN201310128389.3A patent/CN103275608B/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 |
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| CN103275608A (en) | 2013-09-04 |
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Effective date of registration: 20171109 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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