CN1243034C - Heat resistant impregnant resin and its preparing method and use - Google Patents
Heat resistant impregnant resin and its preparing method and use Download PDFInfo
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- CN1243034C CN1243034C CN 03107273 CN03107273A CN1243034C CN 1243034 C CN1243034 C CN 1243034C CN 03107273 CN03107273 CN 03107273 CN 03107273 A CN03107273 A CN 03107273A CN 1243034 C CN1243034 C CN 1243034C
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Abstract
The present invention relates to non styrene type solvent-free insulating impregnating resin which is transparent liquid with low viscosity. The present invention has the preparing method: 1) aromatic diacid and fatty group polyatomic alcohol are heated to 180 DEG C to 200 DEG C under the condition of stirring, an esterification reaction is generated, and meanwhile, water generated by the reaction is fractionated; 2) unsaturation acid anhydride is added in the temperature range of 140 DEG C to 160 DEG C and reflux is heated, the esterification reaction is continuously carried out to an acid value less than 30; 3) non styrene type activated monomer diluent is added in the temperature range of 120 DEG C to 150 DEG C; 4) functional additives are added in the temperature range of 40 DEG C to 80 DEG C. The resin is suitable for being used as electromechanical impregnating resin. An insulating paint film formed by heating and solidifying has the advantages of good mechanical property, high electric strength, low dielectric loss, chemical stability resistance, low temperature resistance, quick solidification and no foaming thick layer. The present invention is suitable for AC/DC standard motors, large-sized special motors, high pressure motors and the impregnation of distribution transformer winding.
Description
Technical field
The present invention relates to a kind of heat-resisting solvent impregnated resin, relate in particular to the solvent-free heat-resisting solvent impregnated resin of a kind of non-styrene type.
The invention still further relates to the preparation method of above-mentioned resin.
The invention still further relates to the application of above-mentioned resin.
Background technology
The fast development of electrical industry is more and more higher to the performance requriements of insulating material of polymer; The temperature classification of the insulated impregnating resin of high and low pressure motor improves constantly, and develops into H level (180 ℃) and C level (240 ℃) from B level (130 ℃), F level (155 ℃); The impregnation technology of solvent impregnated resin is immersed, immerses continuously, is dripped and soak, roll to soak and develop into vacuum pressure impregnation from common; The type of solvent impregnated resin also develops to solvent-free direction from solvent-borne type, few solvent-borne type.Along with the continuous enhancing of people's environmental protection consciousness, solvent-free impregnating resin becomes an important developing direction.The solvent-borne type solvent impregnated resin is owing to use a large amount of organic solvents, and as benzene,toluene,xylene, cresols etc., in use these solvents are most of or as discharging of waste liquid, or as exhaust gas emission in atmosphere, cause serious environmental to pollute; Simultaneously, baking and banking up with earth in the process of insulating resin, a large amount of solvent evaporates easily produces bubble, pore etc., causes insulation system to produce defective.Along with the continuous enhancing of people's environmental protection consciousness, solvent-free impregnating resin becomes an important developing direction.
Solvent-free impregnating resin mainly comprises styrene type unsaturated polyester solvent impregnated resin and epoxide resin type solvent-free impregnating resin two big classes.The epoxide resin type solventfree resin is owing to use acid anhydrides and/or amine curing agent etc. to have the niff of making us; In addition, its set time is long, and the paint film toughness after the curing is relatively poor.Compare with the solvent-borne type solvent impregnated resin, the styrene type solvent-free impregnating resin has some improvement at tool aspect the protection environment; Because vinylbenzene or vinyl toluene participate in crosslinking reaction in the solidification process of resin, so the quantity discharged of organic volatile (VOC) decreases.But the flash-point of vinylbenzene and vinyl toluene lower (being respectively 31 ℃ and 52 ℃) is that the unsaturated polyester solvent impregnated resin of thinner still has the part thinner and vapors away in solidification process with them, and its volatile quantity is up to the 15-25% of thinner total amount; Therefore, its still environmental pollution, HUMAN HEALTH is caused very big influence.In recent years, industrially developed country has all dropped into financial resources, man power and material in this field, is used to develop novel low (lacking) to pollute nuisanceless impregnating varnish;
Hegemann (25
ThElectrical electronics Insulation Conference ﹠amp; ElectricalManufacturing ﹠amp; Coil Winding, Oct.1999, Ohio, US P7-13) has reported a kind of solventless unsaturated polyester solvent impregnated resin of low volatility, and this resin does not contain any diluent monomer, and temperature classification reaches 200 ℃;
(Proceding:Electrical Insulation Conference and ElectricalManufacturing ﹠amp such as Ron Goetter; Coil Winding Conference, Oct.2001, Ohio, US, P16-18) Bao Dao solventless unsaturated polyester resin is compared with coventional type unsaturated polyester impregnating varnish, has higher viscosity, therefore needs to add thinner and reduces viscosity.In order to reduce styrenic thinner consumption, adopted acrylic acid or the like as being total to thinner;
Doctor Bardoliwalla (Proceding:Electrical Insulation Conference andElectrical Manufacturing ﹠amp; Coil Winding Conference, Oct.2001, Ohio, US, P61-63) reported that a kind of being applicable to immerse and vacuum pressure impregnation (VPI) and drip the solvent-free vibrin of low volatilization, high flash point soak and roll soaking technology, it selects phthalic acid allyl ester (DAP) for use is thinner; And reported the novel solvent-free vibrin (EXP) of a kind of VOC at 0.3-0.8%, temperature classification is 180 ℃;
Mark Winkeler (Proceding:Electrical Insulation Conference and ElectricalManufacturing ﹠amp; Coil Winding Conference, Oct.2001, Ohio, US, P143-148) comparative analysis the performance requriementss of various electric motor to solvent impregnated resin, think that Resins, epoxy and unsaturated polyester as two main big kinds, can develop towards low solvation, solvent free direction from now on, to satisfy the development need of new technologies such as motor microminiaturization and adaptation frequency conversion.
At home, the research of relevant solventless unsaturated polyester resin impregnation lacquer also has report, but the great majority report still adopts vinylbenzene, or modified phenylethylene is a diluent monomer.(the 8th national insulating material and insulation technology seminar collection of thesis such as Zhou Jian, in October, 2002, China Kunming, 11-16) and (the 8th national insulating material and insulation technology seminar collection of thesis such as Dong Zhancai, in October, 2002, China Kunming, 17-21) performance and the application of styrene type high and low pressure motor general F level solvent-free immersion paint and styrene type H9150 unsaturated polyester-imide solvent-free impregnating resin have been reported.Because cinnamic flash-point is low, boiling point is low, and volatility is big, and harmful to HUMAN HEALTH, and long-term contact can produce detrimentally affect to human heart.The same with the solvent-borne type solvent impregnated resin, also exist because the problems such as insulation strength reduction that bubble, air gap etc. cause in the solidification process.Therefore, no matter be solvent-borne type solvent impregnated resin or styrene type solvent-free impregnating resin, all there is problem of environmental pollution in varying degrees.
Along with the progressively enhancing of people's environmental consciousness, research and development novel environment friendly, non-harmful solvent-free impregnating resin become one of the development focus in insulating material field.
Summary of the invention
The objective of the invention is to disclose the solvent-free heat-resisting solvent impregnated resin of a kind of non-styrene type, this solvent impregnated resin volatility is little, have no irritating odor, excellent storage stability, curing speed are fast, is applicable to the insulation system of various motors.
Another object of the present invention is to disclose a kind of method for preparing above-mentioned resin.
For achieving the above object, the solvent-free heat-resisting solvent impregnated resin of a kind of non-styrene type disclosed by the invention, its leading indicator is:
Outward appearance is a transparent liquid;
Volume specific resistance: under the normality 〉=1 * 10
12Ω m, 20 ± 5 ℃ of immersion 24h 〉=1 * 10
10Ω m, 155 ± 2 ℃ 〉=1 * 10
8Ω m;
Dielectric strength: under the normality 〉=20kV/mm, 20 ± 5 ℃ of immersion 24h 〉=18kV/mm, 155 ± 2 ℃ 〉=16kV/mm;
User's application conditions: 120-130 ℃≤2h;
Resin is to the effect of enameled wire: pencil hardness is not softer than 1H;
Bonding strength (spiral winding method): normality 〉=50N;
Humidity index: 155 (F levels).
Comprise that above-mentioned leading indicator and other indexs see table 1 for details.
Above-mentioned resin major ingredient comprises:
The aliphatics polyprotonic acid of the aromatic diacid of 148-286 part, 155-265 part, the unsaturated acid anhydride of 98-164 part, 1500 parts non-styrene type reactive monomer thinner and 0.22 part functional additive;
Non-styrene type solvent-free impregnating resin disclosed by the invention, its preparation method is:
A) aromatic diacid, aliphatic polyol under agitation are heated to 180-200 ℃, esterification takes place, fractionate out the moisture content that reaction produces simultaneously;
B) in 140-160 ℃ temperature range, add unsaturated acid anhydride, reflux, proceed esterification to acid number less than 30;
C) in 120-150 ℃ temperature range, add non-styrene type reactive monomer thinner.
D) in 40-80 ℃ the temperature range, add functional additive, obtain transparent, uniform solvent-free impregnating resin.
Aromatic diacid of the present invention, mean 4,4 '-biphenyl dicarboxylic acid, 3,3 '-biphenyl dicarboxylic acid, 2,2 '-biphenyl dicarboxylic acid, 4,4 '-two methyl-phenoxide dioctyl phthalate, 3,3 '-biphenyl methyl ether dioctyl phthalate, 2,2 '-biphenyl methyl ether dioctyl phthalate, 4,4 '-ditane dioctyl phthalate, 3,3 '-ditane dioctyl phthalate, 2,2 '-ditane dioctyl phthalate, m-phthalic acid, terephthalic acid or phthalic acid.
Unsaturated acid anhydride of the present invention means MALEIC ANHYDRIDE, norbornylene acid anhydrides, 4-methyl tetrahydro phthalic anhydride or tetrahydrophthalic anhydride.
Aliphatic polyol of the present invention means ethylene glycol, propylene glycol, glycol ether, propylene glycol, neopentyl glycol, butyleneglycol or tetramethylolmethane.
Non-styrene type reactive monomer thinner of the present invention, mean and contain reactive carbon-to-carbon double bond (low-viscosity (mobile) liquid organic compound C=C-) comprises diallyl isophthalate, Phthalic acid, diallyl ester, phenyl ether dioctyl phthalate diallyl, triallyl cyanurate, 2-hydroxyethyl methacrylate, Hydroxyethyl acrylate, methacrylic acid-2-hydroxypropyl acrylate, Ethylene glycol dimethacrylate or diacrylate one condensed ethandiol ester.
Functional additive of the present invention, mean and to improve the solvent impregnated resin package stability, improve the resin forming processing performance, promote and the acceleration resin solidification, improve organic compound of the high cryogenic mechanics performance of cured resin, electric property, package stability and composition thereof, comprise methoxyphenol, cobalt naphthenate and composition thereof.
Non-styrene type solvent-free impregnating resin of the present invention has that good mechanical property, electrical strength height, dielectric loss are low, characteristics such as chemical-resistant stability, low temperature fast curing, thick-layer are non-foaming.
Non-styrene type solvent-free impregnating resin of the present invention, its main application comprises: the dipping of AC and DC standard electromotor, large-scale special machines, high-voltage motor and substation transformer winding; Impregnation method comprises common dipping, roll soak, vacuum pressure impregnation etc.
Embodiment
Example 1: with 166 parts of m-phthalic acids, 190 parts of propylene glycol, 98 parts of MALEIC ANHYDRIDE under agitation are heated to 180-220 ℃, react to solution to be vitreous state under reflux state, and acid number is less than 50 back underpressure distillation; After the reaction solution acid number is lower than 30, be cooled to 160 ℃, add 1500 portions of Phthalic acid, diallyl esters and 0.22 part of functional additive.Obtain the solvent impregnated resin of homogeneous transparent after stirring.
Mode is immersed in the solvent impregnated resin employing continuously flooded machine winding, obtain flooding machine winding through thermal treatment in 130 ℃/1.5 hours.
Example 2: with 166 parts of m-phthalic acids, 155 parts of ethylene glycol, 152 parts of tetrahydrophthalic anhydride under agitation are heated to 180-220 ℃, react to solution to be vitreous state under reflux state, and acid number is less than 50 back underpressure distillation; After the reaction solution acid number is lower than 30, be cooled to 160 ℃, add 1500 portions of Phthalic acid, diallyl esters and 0.22 part of functional additive.Obtain the solvent impregnated resin of homogeneous transparent after stirring.
Mode is immersed in the solvent impregnated resin employing continuously flooded machine winding, obtain flooding machine winding through thermal treatment in 130 ℃/1.5 hours.
Example 3: with 166 parts of terephthalic acids, 190 parts of propylene glycol, 138 parts of 4-methyl tetrahydro phthalic anhydrides under agitation are heated to 180-220 ℃, react to solution to be vitreous state under reflux state, and acid number is less than 50 back underpressure distillation; After the reaction solution acid number is lower than 30, be cooled to 160 ℃, add the alpha-methyl styrene solution of 1500 part 50% phenyl ether dioctyl phthalate diallyl, 0.12 part of methoxyphenol, 0.1 part of cobalt naphthenate obtains the solvent impregnated resin of homogeneous transparent after stirring.
Mode is immersed in the solvent impregnated resin employing continuously flooded machine winding, obtain flooding machine winding through thermal treatment in 130 ℃/1.5 hours.
Example 4: with 166 parts of terephthalic acids, 190 parts of propylene glycol, 98 parts of MALEIC ANHYDRIDE under agitation are heated to 180-220 ℃, react to solution to be vitreous state under reflux state, and acid number is less than 50 back underpressure distillation; After the reaction solution acid number is lower than 30, be cooled to 160 ℃, add triallyl cyanurate and alpha-methyl styrene mixing solutions and and 0.22 part of functional additive of 1500 part 30%.Obtain the solvent impregnated resin of homogeneous transparent after stirring.
Mode is immersed in the solvent impregnated resin employing continuously flooded machine winding, obtain flooding machine winding through thermal treatment in 130 ℃/1.5 hours.
Example 5: with 148 parts of Tetra hydro Phthalic anhydrides, 190 parts of propylene glycol add 152 parts of tetrahydrophthalic anhydride, under agitation are heated to 180-220 ℃, react to solution to be vitreous state under reflux state, and acid number is less than 50 back underpressure distillation; After the reaction solution acid number is lower than 30, be cooled to 160 ℃, add 1500 parts of Ethylene glycol dimethacrylate and 0.22 part of functional additive.Obtain the solvent impregnated resin of homogeneous transparent after stirring.
Mode is immersed in the solvent impregnated resin employing continuously flooded machine winding, obtain flooding machine winding through thermal treatment in 130 ℃/1.5 hours.
Example 6: with 242 part 4,4 '-biphenyl dicarboxylic acid, 260 parts of neopentyl glycol add 98 parts of MALEIC ANHYDRIDE, under agitation are heated to 180-220 ℃, react to solution to be vitreous state under reflux state, acid number is less than 50 back underpressure distillation; After the reaction solution acid number is lower than 30, be cooled to 160 ℃, add 1500 parts of diacrylate one condensed ethandiol esters and 0.22 part of functional additive.Obtain the solvent impregnated resin of homogeneous transparent after stirring.
Mode is immersed in the solvent impregnated resin employing continuously flooded machine winding, obtain flooding machine winding through thermal treatment in 130 ℃/1.5 hours.
Example 7: with 166 parts of m-phthalic acids, 225 parts of butyleneglycols, 152 parts of tetrahydrophthalic anhydride under agitation are heated to 180-220 ℃, react to solution to be vitreous state under reflux state, and acid number is less than 50 back underpressure distillation; After the reaction solution acid number is lower than 30, be cooled to 160 ℃, add 1500 parts of Hydroxyethyl acrylates, 0.12 part of methoxyphenol, 0.1 part of cobalt naphthenate obtains the solvent impregnated resin of homogeneous transparent after stirring.
Mode is immersed in the solvent impregnated resin employing continuously flooded machine winding, obtain flooding machine winding through thermal treatment in 130 ℃/1.5 hours.
Example 8: with 242 part 4,4 '-biphenyl dicarboxylic acid, 225 parts of butyleneglycols add 138 parts of 4-methyl tetrahydro phthalic anhydrides, under agitation are heated to 180-220 ℃, react to solution to be vitreous state under reflux state, acid number is less than 50 back underpressure distillation; After the reaction solution acid number is lower than 30, be cooled to 160 ℃, add 1500 parts of 2-hydroxyethyl methacrylates and 0.22 part of functional additive.Obtain the solvent impregnated resin of homogeneous transparent after stirring.
Mode is immersed in the solvent impregnated resin employing continuously flooded machine winding, obtain flooding machine winding through thermal treatment in 130 ℃/1.5 hours.
Example 9: with 286 part 4,4 '-two methyl-phenoxide dioctyl phthalate, 260 parts of neopentyl glycol, 98 parts of MALEIC ANHYDRIDE under agitation are heated to 180-220 ℃, react to solution to be vitreous state under reflux state, and acid number is less than 50 back underpressure distillation; After the reaction solution acid number is lower than 30, be cooled to 160 ℃.The alpha-methyl styrene solution that adds 1500 part 50% Phthalic acid, diallyl ester, 0.12 part of methoxyphenol, 0.1 part of cobalt naphthenate obtains the solvent impregnated resin of homogeneous transparent after stirring.
Mode is immersed in the solvent impregnated resin employing continuously flooded machine winding, obtain flooding machine winding through thermal treatment in 130 ℃/1.5 hours.
Example 10: with 286 part 4,4 '-two methyl-phenoxide dioctyl phthalate, 265 portions of glycol ethers add 152 parts of tetrahydrophthalic anhydride, under agitation are heated to 180-220 ℃, react to solution to be vitreous state under reflux state, and acid number is less than 50 back underpressure distillation; After the reaction solution acid number is lower than 30, be cooled to 160 ℃, add 1500 parts of methacrylic acid-2-hydroxypropyl acrylates and 0.22 part of functional additive.Obtain the solvent impregnated resin of homogeneous transparent after stirring.
Mode is immersed in the solvent impregnated resin employing continuously flooded machine winding, obtain flooding machine winding through thermal treatment in 130 ℃/1.5 hours.
Example 11: with 256 part 4,4 '-the ditane dioctyl phthalate, 265 portions of glycol ethers, 152 parts of tetrahydrophthalic anhydride under agitation are heated to 180-220 ℃, react to solution to be vitreous state under reflux state, acid number is less than 50 back underpressure distillation; After the reaction solution acid number is lower than 30, be cooled to 160 ℃, add alpha-methyl styrene solution and 0.22 part of functional additive of 1500 part 50% Phthalic acid, diallyl ester.Obtain the solvent impregnated resin of homogeneous transparent after stirring.
Mode is immersed in the solvent impregnated resin employing continuously flooded machine winding, obtain flooding machine winding through thermal treatment in 130 ℃/1.5 hours.
Example 12: with 286 part 4,4 '-two methyl-phenoxide dioctyl phthalate, 260 parts of neopentyl glycol, 152 parts of tetrahydrophthalic anhydride under agitation are heated to 180-220 ℃, react to solution to be vitreous state under reflux state, and acid number is less than 50 back underpressure distillation; After the reaction solution acid number is lower than 30, be cooled to 160 ℃, add alpha-methyl styrene solution and 0.22 part of functional additive of 1500 part 50% Phthalic acid, diallyl ester.Obtain the solvent impregnated resin of homogeneous transparent after stirring.
Mode is immersed in the solvent impregnated resin employing continuously flooded machine winding, obtain flooding machine winding through thermal treatment in 130 ℃/1.5 hours.
Example 13: with 286 part 4,4 '-two methyl-phenoxide dioctyl phthalate, 190 parts of propylene glycol, 164 parts of norbornylene acid anhydrides under agitation are heated to 180-220 ℃, react to solution to be vitreous state under reflux state, and acid number is less than 50 back underpressure distillation; After the reaction solution acid number is lower than 30, be cooled to 160 ℃, add alpha-methyl styrene solution and 0.22 part of functional additive of 1500 part 50% Phthalic acid, diallyl ester.Obtain the solvent impregnated resin of homogeneous transparent after stirring.
Mode is immersed in the solvent impregnated resin employing continuously flooded machine winding, obtain flooding machine winding through thermal treatment in 130 ℃/1.5 hours.
Example 14: with 166 parts of terephthalic acids, 190 parts of propylene glycol, 164 parts of norbornylene acid anhydrides under agitation are heated to 180-220 ℃, react to solution to be vitreous state under reflux state, and acid number is less than 50 back underpressure distillation; After the reaction solution acid number is lower than 30, be cooled to 160 ℃, add alpha-methyl styrene solution and 0.22 part of functional additive of 1500 part 50% Phthalic acid, diallyl ester.Obtain the solvent impregnated resin of homogeneous transparent after stirring.
Mode is immersed in the solvent impregnated resin employing continuously flooded machine winding, obtain flooding machine winding through thermal treatment in 130 ℃/1.5 hours.
Example 15: with 166 parts of m-phthalic acids, 155 parts of ethylene glycol, 138 parts of 4-methyl tetrahydro phthalic anhydrides under agitation are heated to 180-220 ℃, react to solution to be vitreous state under reflux state, and acid number is less than 50 back underpressure distillation; After the reaction solution acid number is lower than 30, be cooled to 160 ℃, add alpha-methyl styrene solution and 0.22 part of functional additive of 1500 part 50% Phthalic acid, diallyl ester.Obtain the solvent impregnated resin of homogeneous transparent after stirring.
Mode is immersed in the solvent impregnated resin employing continuously flooded machine winding, obtain flooding machine winding through thermal treatment in 130 ℃/1.5 hours.
The key technical indexes of the non-styrene type solvent-free impregnating resin of table 1
Outward appearance: transparent liquid, do not have mechanical impurity
Proportion (25 ℃): 1.06-1.20
Viscosity (23 ± 2 ℃): 15-25s after the 4# cup is mixed
Acid number＜9mgKOH/g
Gel time: test tube method 5-10min/110 ± 2 ℃
Drying property: surface drying 15min/120 ℃
Thick dried 20min/120 ℃
Volume specific resistance: normality: 〉=1 * 10
12Ω m
Behind 20 ± 5 ℃ of immersion 24h: 〉=1 * 10
10Ω m
155±2℃≥1×10
8Ωm
Dielectric strength: normality: 〉=20kV/mm;
20 ± 5 ℃ of immersion 24h: 〉=18kV/mm
155±2℃≥16kV/mm
Fugitive constituent :≤5%
Storage period: 25 ℃ of grouping sealings were stored 6 months
Working life: after resin is mixed, stored in open container 10 days for 30-35 ℃, supply back volatile fraction solvent, the viscosity increasing value is not more than 50s, room temperature storage gel not more than 20 days.
User's application conditions: 120-130 ℃≤2h
Resin is to the effect of enameled wire: pencil hardness is not softer than 1H
Bonding strength (screwed pipe method): normality 〉=50N
Humidity index: 155 (F levels)
Claims (3)
1, a kind of solvent impregnated resin, its leading indicator is:
Outward appearance is a transparent liquid;
Volume specific resistance: under the normality 〉=1 * 10
12Ω m, 20 ± 5 ℃ of immersion 24h 〉=1 * 10
10Ω m, 155 ± 2 ℃ 〉=1 * 10
8Ω m;
Dielectric strength: normality: 〉=20kV/mm, 20 ± 5 ℃ of immersion 24h 〉=18kV/mm, 155 ± 2 ℃ 〉=16kV/mm;
User's application conditions: 120-130 ℃≤2h;
Resin is to the effect of enameled wire: pencil hardness is not softer than 1H;
The bonding strength of spiral winding method: normality 〉=50N;
Humidity index: be the F level in the time of 155 ℃;
Major ingredient comprises:
The aliphatics polyprotonic acid of the aromatic diacid of 148-286 part, 155-265 part, the unsaturated acid anhydride of 98-164 part, 1500 parts non-styrene type reactive monomer thinner and 0.22 part functional additive;
Described aromatic diacid is 4,4 '-biphenyl dicarboxylic acid, 3,3 '-biphenyl dicarboxylic acid, 2,2 '-biphenyl dicarboxylic acid, 4,4 '-two methyl-phenoxide dioctyl phthalate, 3,3 '-biphenyl methyl ether dioctyl phthalate, 2,2 '-biphenyl methyl ether dioctyl phthalate, 4,4 '-ditane dioctyl phthalate, 3,3 '-ditane dioctyl phthalate, 2,2 '-ditane dioctyl phthalate, m-phthalic acid, terephthalic acid or phthalic acid;
Described unsaturated acid anhydride is MALEIC ANHYDRIDE, norbornylene acid anhydrides, 4-methyl tetrahydro phthalic anhydride or tetrahydrophthalic anhydride;
Described aliphatic polyol is ethylene glycol, propylene glycol, glycol ether, dipropylene glycol, neopentyl glycol, butyleneglycol or tetramethylolmethane;
Described non-styrene type reactive monomer thinner, refer to contain the low-viscosity (mobile) liquid organic compound of reactive carbon-to-carbon double bond, comprise diallyl isophthalate, Phthalic acid, diallyl ester, phenyl ether dioctyl phthalate diallyl, triallyl cyanurate, 2-hydroxyethyl methacrylate, Hydroxyethyl acrylate, methacrylic acid-2-hydroxypropyl acrylate, Ethylene glycol dimethacrylate or diacrylate one condensed ethandiol ester;
Described functional additive is methoxyphenol, cobalt naphthenate and composition thereof.
2, the described solvent impregnated resin of a kind of claim 1 the preparation method, key step comprises:
A) aromatic diacid, aliphatic polyol under agitation are heated to 180-200 ℃, esterification takes place, fractionate out the moisture content of generation simultaneously;
B) in 140-160 ℃ temperature range, add unsaturated acid anhydride, reflux, proceed esterification to acid number less than 30;
C) in 120-150 ℃ temperature range, add non-styrene type reactive monomer thinner;
D) in 40-80 ℃ the temperature range, add functional additive, obtain transparent, uniform solvent impregnated resin.
3, the described solvent impregnated resin of claim 1 is used to comprise the dipping of AC and DC standard electromotor, large-scale special machines, high-voltage motor and substation transformer winding.
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