CN103937395B - A kind of dry type transformer insulating impregnating varnish and preparation method thereof - Google Patents
A kind of dry type transformer insulating impregnating varnish and preparation method thereof Download PDFInfo
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- CN103937395B CN103937395B CN201410153718.4A CN201410153718A CN103937395B CN 103937395 B CN103937395 B CN 103937395B CN 201410153718 A CN201410153718 A CN 201410153718A CN 103937395 B CN103937395 B CN 103937395B
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Abstract
The invention discloses a kind of dry type transformer impregnating varnish adopting innoxious solvent, have for environmental friendliness, there is hypotoxic advantage, adopt polyethylene glycol dimethacrylate, poly terephthalic acid 1, 4-cyclohexanedimethanoester ester is as membrane-forming agent, and add the improving agent of three (2-propyloic) chlorinated isocyanurates as Cheng Mo, trimellitic acid 1,2-anhydride and 4, the imine structure that the reaction of 4-diaminodiphenylmethane generates, improve the thermotolerance of resin, electrical property and mechanical property, polyethylene glycol dimethacrylate and poly terephthalic acid 1, 4 cyclohexanedimethanoester esters improve the tack of whole product and softening breakdown performance.
Description
Technical field
The present invention relates to field transformer, particularly the insulating impregnating varnish of dry type transformer and preparation method.
Technical background
Dry type transformer is the indispensable assembly of electron trade, and the quality of its quality depends on the insulation system of transformer and the performance of insulating material to a great extent.Transformer impregnated insulating paint, except meeting except insulating property, goes back the requirement of demand fulfillment protection against the tide, Defend salt fog, the aspect such as anti-mildew.To take in the electromechanical properties of the technical requirements of transformer and paint, temperature classification, intermiscibility with supplementary material, application art, work reliability and life-span, economy, environmental protection when selecting insullac.
The temperature classification master of polyester coating paint is divided into B level (130 DEG C), F level (155 DEG C), H level (180 DEG C) and C level (240 DEG C), require H level at present more, impregnation technology is divided into commonly to be immersed, immerse continuously, drips and invade, roll and invade and vacuum pressure impregnation etc., adopt vacuum pressure impregnation at present more, immersion solvent comprises benzene class, phenols, ester class etc.
Current dry type transformer insulating impregnating varnish is mainly divided into solvent impregnating varnish and solvent-free immersion paint.Solvent impregnating varnish generally uses benzene class and phenol solvent, and these solvents in use major part, as waste discharge, cause serious environmental pollution, simultaneously in the drying process of insullac, because solvent volatilizees in a large number, easily formed and bubble and pore, cause insulation system to produce defect.Solvent-free immersion paint comprises unsaturated polyester resin paint, epoxy solvent-free paint and polyester-imide paint etc.Epoxies solvent-free paint is owing to using acid anhydrides and amine curing agent, and scent of pollutes, and its set time is long in addition, and paint toughness is poor.
Polyester-imide paint, owing to comprising polyester and imide two kinds of molecular structures, makes its snappiness having polyester concurrently and imido thermotolerance.Polyester-imide paint also has that thermotolerance is high, refrigerant is good, the advantage that solvent resistance is good, is therefore widely used in the field such as motor, transformer.
Chinese patent CN103013269A discloses a kind of Moisture-resistant epoxy resin paint for transformer, which employs emulsion finished product prepared by modified epoxy as main filmogen, whole smooth production process is easily controlled, and finished product consistence significantly improves, and lot stability is good; Select PDDA and as solvent, finished product smell is significantly improved, and decreases environmental pollution to production and application.
Summary of the invention
The invention provides and a kind ofly adopt nontoxic dimethyl terephthalate (DMT) and 1, ammediol is as the nontoxic impregnating varnish of solvent, have for environmental friendliness, there is hypotoxic advantage, adopt polyethylene glycol dimethacrylate, poly terephthalic acid 1 simultaneously, 4-cyclohexanedimethanoester ester is as membrane-forming agent, add the improving agent of three (2-propyloic) chlorinated isocyanurates as Cheng Mo, make the structure adding triazine ring in polyester molecule, due to crawling effect when macromole is heated, the thermal shock resistance properties of numerical value can be improved.And the imine structure that trimellitic acid 1,2-anhydride and the reaction of 4,4-diaminodiphenyl-methanes generate, for the thermotolerance of resin, electricity newly can and mechanical property be greatly improved, but again lacquering to be punctured and adhesion property brings bad impact softening simultaneously.Polyethylene glycol dimethacrylate and poly terephthalic acid 1,4 cyclohexane dimethanol ester can weaken these disadvantageous effects that imine structure brings to a certain extent, and the tack improving whole product softens breakdown performance.
The features such as impregnating varnish provided by the invention has excellent mechanical property simultaneously, electrical strength is high, and dielectric loss is low, and chemical stability is good, quick solidifying, non-foaming.May be used for various motor device, especially the dipping of transformer winding, the mode of dipping comprises conventional impregnation, and leaching is rolled, vacuum pressure impregnation etc.
The present invention, in preparation process, adopts two-step approach to carry out, resin raw material is first put into mixed melting in reactor, and then adds imine reaction thing.This avoid because imine biatomic acid precipitation result in reactant too thickness, stir difficulty, disperse uneven problem.
The invention provides a kind of transformer impregnating varnish, be made up of the raw material of following weight part: polyethylene glycol dimethacrylate 50-70 part; Poly terephthalic acid 1,4 cyclohexane dimethanol ester 15-25 part; Dimethyl terephthalate (DMT) 15-20 part; 1,3-PD 10-15 part; Three (2-propyloic) chlorinated isocyanurates 1-3 part; Trimellitic acid 1,2-anhydride 10-15 part; 4,4-diaminodiphenyl-methane 10-15 part; Polydimethylsiloxane 0.05-0.2 part; Butyl (tetra) titanate 0.1-0.3 part.
Transformer insulated impregnating varnish of the present invention is preferred to be further made up of following parts by weight of raw materials: polyethylene glycol dimethacrylate 55-60 part; Poly terephthalic acid 1,4 cyclohexane dimethanol ester 20-25 part; Dimethyl terephthalate (DMT) 16-20 part; 1,3-PD 11-14 part; Three (2-propyloic) chlorinated isocyanurates 1-2 part; Trimellitic acid 1,2-anhydride 12-14 part; 4,4-diaminodiphenyl-methane 12-14 part; Polydimethylsiloxane 0.1-0.15 part; Butyl (tetra) titanate 0.2-0.3 part.
Present invention also offers a kind of method preparing transformer impregnating varnish.Comprise the following steps: a) by polyethylene glycol dimethacrylate, poly terephthalic acid 1,4-cyclohexanedimethanoester ester, dimethyl terephthalate (DMT), three (2-propyloic) chlorinated isocyanurates and 1,3-PD are mixed and heated to 120-130 DEG C; B) add trimellitic acid 1,2-anhydride and 4,4-diaminodiphenyl-methane, be warming up to 150-155 DEG C, stirring reaction 2-3 hour; C) finally add polydimethylsiloxane and butyl (tetra) titanate, continue to stir 2-3 hour, impregnating varnish product can be obtained.
The present invention also provides a kind of power transformer product, described transformer have employed impregnating varnish disclosed by the invention and carries out dip treating, dip treating method used can be commonly to immerse, immerse continuously, drip invade, roll invade with in the method such as vacuum pressure impregnation any one or multiple.
Embodiment
Embodiment 1 one kinds of dry type transformer impregnating varnishes, be made up of the raw material of following mass parts: polyethylene glycol dimethacrylate 65 parts, poly terephthalic acid 1,4-cyclohexanedimethanoester ester 15 parts, dimethyl terephthalate (DMT) 15 parts, 1,3-PD 15 parts, three (2-propyloic) chlorinated isocyanurates, 1 part of trimellitic acid 1,2-anhydride, 10 parts of .4,4-diaminodiphenyl-methanes, 10 parts of polydimethylsiloxanes, 0.1 part of butyl (tetra) titanate 0.3 part.
The preparation method of dry type transformer impregnating varnish described in embodiment 1: a) take polyethylene glycol dimethacrylate 65 parts, poly terephthalic acid 1, 4-cyclohexanedimethanoester ester 15 parts, dimethyl terephthalate (DMT) 15 parts, three (2-propyloic) chlorinated isocyanurates 1 part and 1, ammediol 15 parts is mixed and heated to 120 DEG C, add trimellitic acid 1,2-anhydride 10 parts again, 4, 4-diaminodiphenyl-methane 10 parts, be warming up to 150 DEG C, stirring reaction 2 hours, finally add polydimethylsiloxane 0.1 part and butyl (tetra) titanate 0.3 part, continue stirring 2 hours, impregnating varnish product can be obtained.
Embodiment 2 one kinds of dry type transformer impregnating varnishes, be made up of the raw material of following mass parts: polyethylene glycol dimethacrylate 70 parts, poly terephthalic acid 1,4-cyclohexanedimethanoester ester 20 parts, dimethyl terephthalate (DMT) 15 parts, 1,3-PD 12 parts, three (2-propyloic) chlorinated isocyanurates, 3 parts of trimellitic acid 1,2-anhydrides, 13 parts of .4,4-diaminodiphenyl-methanes, 13 parts of polydimethylsiloxanes, 0.2 part of butyl (tetra) titanate 0.2 part.
The preparation method of impregnating varnish described in embodiment 1: a) take polyethylene glycol dimethacrylate 70 parts, poly terephthalic acid 1,4-cyclohexanedimethanoester ester 20 parts, dimethyl terephthalate (DMT) 15 parts, three (2-propyloic) chlorinated isocyanurates 3 parts and 1, ammediol 12 parts is mixed and heated to 130 DEG C, add trimellitic acid 1,2-anhydride 13 parts, 4 again, 4-diaminodiphenyl-methane 13 parts and, be warming up to 155 DEG C, stirring reaction 3 hours, finally add polydimethylsiloxane 0.2 part and butyl (tetra) titanate 0.2 part, continue stirring 3 hours, impregnating varnish product can be obtained.
Embodiment 3 one kinds of dry type transformer impregnating varnishes, be made up of the raw material of following mass parts: polyethylene glycol dimethacrylate 65 parts, poly terephthalic acid 1,4-cyclohexanedimethanoester ester 25 parts, dimethyl terephthalate (DMT) 18 parts, 1,3-PD 12 parts, three (2-propyloic) chlorinated isocyanurates, 3 parts of trimellitic acid 1,2-anhydrides, 15 parts of .4,4-diaminodiphenyl-methanes, 15 parts of polydimethylsiloxanes, 0.2 part of butyl (tetra) titanate 0.2 part.
The preparation method of impregnating varnish described in embodiment 1: a) take polyethylene glycol dimethacrylate 65 parts, poly terephthalic acid 1,4-cyclohexanedimethanoester ester 25 parts, dimethyl terephthalate (DMT) 18 parts, three (2-propyloic) chlorinated isocyanurates 3 parts and 1, ammediol 12 parts is mixed and heated to 130 DEG C, add trimellitic acid 1,2-anhydride 15 parts, 4 again, 4-diaminodiphenyl-methane 15 parts and, be warming up to 155 DEG C, stirring reaction 3 hours, finally add polydimethylsiloxane 0.2 part and butyl (tetra) titanate 0.2 part, continue stirring 3 hours, impregnating varnish product can be obtained.
The Specifeca tion speeification of preparing product is as shown in table 1:
Specifeca tion speeification
Claims (3)
1. a dry type transformer impregnating varnish, is characterized in that being made up of the raw material of following weight part: polyethylene glycol dimethacrylate 50-70 part; Poly terephthalic acid 1,4 cyclohexane dimethanol ester 15-25 part; Dimethyl terephthalate (DMT) 15-20 part; 1,3-PD 10-15 part; Three (2-propyloic) chlorinated isocyanurates 1-3 part; Trimellitic acid 1,2-anhydride 10-15 part; 4,4-diaminodiphenyl-methane 10-15 part; Polydimethylsiloxane 0.05-0.2 part; Butyl (tetra) titanate 0.1-0.3 part.
2. dry type transformer impregnating varnish as claimed in claim 1, is characterized in that the proportioning raw materials of each component is polyethylene glycol dimethacrylate 55-60 part; Poly terephthalic acid 1,4 cyclohexane dimethanol ester 20-25 part; Dimethyl terephthalate (DMT) 16-20 part; 1,3-PD 11-14 part; Three (2-propyloic) chlorinated isocyanurates 1-2 part; Trimellitic acid 1,2-anhydride 12-14 part; 4,4-diaminodiphenyl-methane 12-14 part; Polydimethylsiloxane 0.1-0.15 part; Butyl (tetra) titanate 0.2-0.3 part.
3. prepare a method for transformer impregnating varnish as claimed in claim 1 or 2, it comprises the following steps:
A) polyethylene glycol dimethacrylate, poly terephthalic acid 1,4 cyclohexane dimethanol ester, dimethyl terephthalate (DMT), three (2-propyloic) chlorinated isocyanurates and 1,3-PD are mixed and heated to 120-130 DEG C;
B) add trimellitic acid 1,2-anhydride and 4,4-diaminodiphenyl-methane, be warming up to 150-155 DEG C, stirring reaction 2-3 hour;
C) finally add polydimethylsiloxane and butyl (tetra) titanate, continue to stir 2-3 hour, impregnating varnish product can be obtained.
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| CN201410153718.4A CN103937395B (en) | 2014-04-16 | 2014-04-16 | A kind of dry type transformer insulating impregnating varnish and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208542A (en) * | 2011-04-18 | 2011-10-05 | 电子科技大学 | Substrate for flexible photoelectronic device and preparation method thereof |
| CN102568785A (en) * | 2012-02-03 | 2012-07-11 | 盐城华盛变压器制造有限公司 | Resin-insulation coil of dry type transformer |
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| US8342669B2 (en) * | 2009-09-18 | 2013-01-01 | Xerox Corporation | Reactive ink components and methods for forming images using reactive inks |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208542A (en) * | 2011-04-18 | 2011-10-05 | 电子科技大学 | Substrate for flexible photoelectronic device and preparation method thereof |
| CN102568785A (en) * | 2012-02-03 | 2012-07-11 | 盐城华盛变压器制造有限公司 | Resin-insulation coil of dry type transformer |
Non-Patent Citations (1)
| Title |
|---|
| 145耐热绝缘浸渍漆的研制;刘伟;《绝缘材料通讯》;19921231(第3期);第1-6页 * |
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Effective date of registration: 20160614 Address after: 224000, Jiangsu, Yancheng City province salt District salt long street Liuzhou Road Patentee after: Jiangsu Hasen Electric CO., LTD. Address before: 224000, Jiangsu, Yancheng City province salt District long salt street, long road (Huasheng Transformer Manufacturing Co., Ltd.) Patentee before: JIANGSU BEIER SCIENCE & TECHNOLOGY DEVELOPMENT CO., LTD. |