CN100345924C - Paint for H grade polyurethane enamelled wire with good saline water needle performace capable of directing welding at low temp. - Google Patents
Paint for H grade polyurethane enamelled wire with good saline water needle performace capable of directing welding at low temp. Download PDFInfo
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- CN100345924C CN100345924C CNB2004100415858A CN200410041585A CN100345924C CN 100345924 C CN100345924 C CN 100345924C CN B2004100415858 A CNB2004100415858 A CN B2004100415858A CN 200410041585 A CN200410041585 A CN 200410041585A CN 100345924 C CN100345924 C CN 100345924C
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Abstract
The present invention relates to H-grade polyurethane wire enamel which has good pinhole performance of salt water and can be directly welded at low temperature. The H-grade polyurethane wire enamel comprises a hydroxy group contained component, a isocyanate masking component and a solvent, wherein the hydroxy group contained component has the acid value less than 2, the hydroxyl value of 150 to 300 and the number average molecular weight of 1500 to 5000, and at least 1 weight portion of m-phthalic acid, 0.2 to 2 weight portions of terephthalic acid, 0.5 to 3 weight portions of hexanedioic acid and 0.5 to 1.5 weight portions of one type of dihydric alcohol are used as raw materials for synthesing the hydroxy group contained component; the isocyanate masking component is obtained by mixing MDI with polyhydric alcohol, and the polyhydric alcohol comprises at least one types of dihydric alcohol and one types of trihydric alcohol; a paint base has the equivalent ratio of isocyanate group to OH as (0.9 to 1. When reaching the H grade, the wire enamel can form a paint film with good pinhole performance of salt water and the solder-dipping temperature no more than 375 DEG C, so that the H-grade polyurethane wire enamel can satisfy the requirements of miniaturization of motors and electric appliances.
Description
Technical field
But the present invention relates to the well H level polyurethane enamelled wire lacquer of cryogenic direct-welding of a kind of saline infusion needle permeability.
Background technology
Mainly (circle line, lenticular wire) bare copper wire, alloy wire and glass yarn are outer in various types of molded lines footpath forms continuous fine and close paint film by the dip-coating mode for wire enamel, make in the winding and produce the good insulation performance layer between the lead and lead, to prevent the circulation of electric current.Polyurethane wire enamel is little with its dielectric loss, have unique excellent properties such as straight weldering, easy dyeing, is widely used in the light current electric products such as accurate coil, motor, instrument, household electrical appliance.Along with the development of electrical industry, the middle and small motor insulating products trends towards high withstand voltage, large vol and miniaturization, and the motor miniaturization causes the raising of working temperature, and the heatproof of polyurethane wire enamel is required also to improve thereupon.In recent years, China's winding wire increased with average annual 7.6% speed, became the big producing country of world's winding wire, and output has broken through 300,000 tons of high pointes.But because the winding wire product that China produces is that main file is inferior not high with the B level still, do not satisfy the growth requirement of household electrical appliances and special machines electrical equipment, required relevant insulated wire all needs import.Along with rapid economy development, industries such as automobile, household electrical appliances, to enameled wire resistance toheat and other respective performances as: enameled wire saline infusion needle permeability can and straight weldering performance, also have higher requirement.The saline infusion needle permeability can mainly be to be used to check enameled wire being subjected to external force be forced to the to stretch continuity of back paint film.By the enameled wire of certain-length is stretched 3%, 5%, 10% respectively, be immersed in the special salt brine solution, two ends apply certain voltage, bubble and red point whether occur by observing conductive line surfaces, thereby judge the successional quality of this enameled wire coat.Above-mentioned saline infusion needle permeability can also can be used for judging enameled wire in use ambient moisture to the influence of enameled wire performance.At present, High-Speed Automatic coiling is all adopted in the coiling of motor and other coil, bring the extension of enameled wire in the winding process inevitably, paint film in the extension process if local fine fisssure or crazing, very likely cause the short circuit phenomenon between lead in actual use, thereby shorten the work-ing life of electrical equipment.This performance is at present as enameled wire and the good and bad primary judging basis of relevant paint.In addition, though polyurethane wire enamel is compared with other wire enamels, has good straight weldering, but, because electrical equipment is tending towards miniaturization at present, the design of insulation system is quite accurate, enameled wire generally all is to carry out scolding tin work after coiling is finished on the corresponding skeleton again, if the too high or scolding tin overlong time of scolding tin temperature all might cause framework deformation, thereby have influence on final assembling, therefore, most of enameled wire users wish that polyurethane wire enamel has lower scolding tin temperature or short scolding tin time, and this helps reducing the generation of substandard products on the one hand, increases work efficiency when carrying out extensive streamline operration on the other hand.
External relevant H level polyurethane enamelled wire lacquer patent as: US4997891 adopts trimellitic acid 1,2-anhydride and 4,4 '-'-diphenylmethane diisocyanate reaction formation imide group, introduce heat-resisting plug gram composition again on molecular structure, heat is 200 ℃ towards temperature, and 400 ℃ are warded off the tin time is 3～4s; The polyurethane wire enamel of US6512073 has the polyamides urea structure, and 390 ℃ are warded off the tin time is 4～5s; The polyurethane wire enamel of US4853261 has the uride structure, and 420 ℃ are warded off the tin time is 1.5s, heat towards temperature greater than 240 ℃.Though its basic index of above-mentioned patent can satisfy the service requirements of H level polyurethane enamelled wire lacquer, has all that to ward off Xi Wendu too high or ward off long deficiency of tin time, and also do not mention the detection data of associated salts liquid drugs injection permeability energy aspect.Domestic relevant H level polyurethane enamelled wire lacquer patent, application number is 02137958.0, the wire enamel that this patent provided is made up of hydroxy component, blocked isocyanate component and solvent three parts.Vibrin as hydroxy component is earlier synthetic terephthalic acid dibasic alcohol or amide imide dibasic alcohol, be polymerized with polyprotonic acid and polyvalent alcohol again, the final index instability of work in-process terephthalic acid dibasic alcohol or amide imide dibasic alcohol, influential to next step reaction; Adopting dimethyl formamide (DMF) in the blocked isocyanate component is synthetic is solvent, and this solvent is easy and aromatic diisocyanate TDI and MDI reaction formation by product in blocked isocyanate component building-up process, is difficult to realize the structure of formulating of recipe; In addition, detect data from the disclosed enameled wire of this patent, line directly relatively, the film thickness that is coated with has belonged to super paste paint film, adopt the existing formed super paste paint film of polyurethane wire enamel all to have good resistance to salt water pin hole, therefore, it reached saline infusion needle permeability can be able to not show it is this specific character that polyurethane wire enamel itself that this patent application provides is had.
Summary of the invention
But the object of the present invention is to provide the well H level polyurethane enamelled wire lacquer of cryogenic direct-welding of a kind of saline infusion needle permeability, the enameled wire that makes with polyurethane wire enamel of the present invention reaches H (180) grade performance requriements, its paint film has good saline infusion needle permeability energy, wards off Xi Wendu≤375 ℃.Realize the technical scheme of the object of the invention: but the H level polyurethane enamelled wire lacquer of the good cryogenic direct-welding of a kind of saline infusion needle permeability energy, it comprises hydroxy component, blocked isocyanate component, solvent, described hydroxy component is the polyester polyol that contains terminal hydroxy group, and its acid number＜2mgKOH/g, hydroxyl value are that 150～300mgKOH/g, number-average molecular weight are 1500～5000; Synthetic this polyester polyol is raw materials used to have m-phthalic acid, terephthalic acid, hexanodioic acid, glycerine and a kind of dibasic alcohol at least, and m-phthalic acid: terephthalic acid: hexanodioic acid: glycerine: the weight ratio of dibasic alcohol is 1: (0.2～2): (0.2～0.5): (0.5～3): (0.5～1.5); Described blocked isocyanate component be by 4,4 '-'-diphenylmethane diisocyanate MDI forms by the xylenol sealing after the addition of polyol blend part again, reaction solvent be between/p-cresol and dimethylbenzene, polyol blend has dibasic alcohol and trivalent alcohol at least, and each is a kind of; MDI: trivalent alcohol: dibasic alcohol: the equivalence ratio of xylenol is 1: (0.125～0.4): (0.125～0.4): (0.5～1.2); Described solvent is phenols and aromatic hydrocarbons mixed solvent; In the described polyurethane wire enamel, the equivalence ratio of the hydroxyl of isocyanate group and hydroxy component is (0.9～1.2): 1.
Above-mentioned polyurethane wire enamel, the hexanodioic acid of synthetic described hydroxy component replaces with the phthalic acid anhydride component, and its replacement amount accounts in used diprotic acid gross weight≤and 15%.Like this, thermotolerance was further improved, again can be not too high because of the Tetra hydro Phthalic anhydride consumption, the low molecular weight substance of ring structure in the resin polycondensation process, forming with polyvalent alcohol, and directly influence wire enamel resistance toheat, saline infusion needle permeability energy and voltage breakdown.
Above-mentioned polyurethane wire enamel, the synthetic employed glycerine of described hydroxy component partly replaces equivalence ratio≤1.5 of three (α-hydroxyethyl) isocyanic ester and other trivalent alcohols with three (α-hydroxyethyl) isocyanic ester or TriMethylolPropane(TMP).Like this, make that the content of heat resistant structure suitably increases in the paint film, improve the softening breakdown performance of enameled wire.
Above-mentioned polyurethane wire enamel, the dibasic alcohol of synthetic described hydroxy component is the 2-methyl isophthalic acid, ammediol, 1, one or more in 4-butyleneglycol, neopentyl glycol, ethylene glycol, the Diethylene Glycol.
Above-mentioned polyurethane wire enamel synthesizes in the used polyol blend of described blocked isocyanate component, and trivalent alcohol is one or more in glycerine, TriMethylolPropane(TMP), three (α-hydroxyethyl) isocyanic ester; Dibasic alcohol is a neopentyl glycol, 1,4-butyleneglycol, 2-methyl isophthalic acid, one or more of ammediol, Diethylene Glycol.
Above-mentioned polyurethane wire enamel, the phenols that is used as described solvent are one or more in cresols, phenol, the xylenol; Aromatic hydrocarbons is one or more in toluene, dimethylbenzene, the heavy aromatic solvent.
The preparation method of the hydroxy component in the polyurethane wire enamel of the present invention:
With diprotic acid, dibasic alcohol, trivalent alcohol in the presence of the esterification auxiliary agent, the thermal dehydration copolymerization, till acid number is less than 2mgKOH/g, cooling, latting drown, filtration, standby.Used esterification auxiliary agent can be chosen any one kind of them from stannous octoate, dibutyl tin laurate, dibutyltin diacetate or be multiple, and its consumption is 0.1～1% of a reactant gross weight.
The preparation method of the blocked isocyanate component in the polyurethane wire enamel of the present invention:
In three mouthfuls of reaction flasks of exsiccant, add between the MDI and reaction solvent of metering/p-cresol, dimethylbenzene, after stirring, the polyol blend that adds metering, the hierarchy of control is at 50 ℃～80 ℃ temperature range internal reaction after 3 hours, adds the encapsulant xylenol of metering and 120 ℃～130 ℃ reactions 3～4 hours, and sampling is surveyed in the closure resin isocyanic acid root less than after 0.1%, lower the temperature, be blended into the letdown solvent dun of metering.
The preparation method of polyurethane wire enamel of the present invention:
Blocked isocyanate component, hydroxy component, flow agent and solvent with metering, 50 ℃～60 ℃ slakings 2～3 hours, promptly obtain wire enamel of the present invention after stirring, lacquer liquid outward appearance is light yellow to the yellow transparent clarified liq, and 25 ℃ are coated with 4 glasss of viscosity is 20～60 seconds.Wherein the equivalence ratio of the hydroxyl of isocyanate group and hydroxy component is (0.9～1.2): 1, the ratio of resin and solvent is (26: 45)～(74: 55) in the lacquer liquid, the consumption of flow agent is 0.5～5% of lacquer basic weight amount, and used flow agent is a polyurethane wire enamel flow agent commonly used.
Polyurethane wire enamel of the present invention can adopt existing method and apparatus to prepare enameled wire.
Technique effect of the present invention: the polyurethane wire enamel that technical solution of the present invention is determined has following advantage: 1. the kind by selecting the used polyprotonic acid of synthesis of hydroxy component, adjust its consumption and mutual blend proportion, reached following four effects, the first has been given full play to m-phthalic acid, terephthalic acid, hexanodioic acid separately to improving the effect of paint film thermotolerance, saline infusion needle permeability energy and cryogenic direct-welding performance; It two is because m-phthalic acid and terephthalic acid collocation use and to control the two ratio be 1: (0.2～2), thereby made full use of m-phthalic acid between bit architecture reduced the crystallization tendency of resin effectively, having overcome resin that independent use terephthalic acid or m-phthalic acid make has the shortcoming of crystallization tendency, improved the continuity of paint film after the polyurethane wire enamel film forming of the present invention, and then paint film saline infusion needle permeability can be improved significantly, simultaneously, because the specific activity terephthalic acid height of second carboxyl of m-phthalic acid, make resin synthetic more easy to control, the gained resin quality is stablized and is not also had influence to warding off Xi Wendu; It three is to use terephthalic acid, m-phthalic acid and hexanodioic acid simultaneously, has only also overcome with m-phthalic acid and hexanodioic acid, can make paint film reach the cryogenic direct-welding performance, and can't reach the stable on heating deficiency of H level.Because the ratio control of m-phthalic acid and hexanodioic acid is 1: (0.2～5), both utilized hexanodioic acid as the self-plasticizing action that flexible group had, help warding off the tin performance again simultaneously, can not influence resistance toheat yet; It four is can make as the polyester polyol one-step synthesis of hydroxy component and overcome existing synthetic many drawbacks of being brought of two steps.2. the synthesis of hydroxy component adopts trivalent alcohol and dibasic alcohol simultaneously and controls the two ratio, and an amount of like this use trivalent alcohol had both improved hydroxyl equivalent, paint film cross-linking density, had improved the resistance toheat and the mechanical property of enameled wire coat; Can not make the viscosity increase of coating with lacquer liquid behind hydroxy component and the lacquering again, influence the enforcement of enamelling process; Can not cause enameled wire overall flexibility and hot punching performance to descend yet; More can be not too high because of cross-linking density, cause enameled wire to improve warding off Xi Shiyin paint film cracked activation energy, directly cause and ward off Xi Wendu rising, time lengthening and ward off Xi Chu and leave over the too much problem of residue.3. owing to control the final acid number of hydroxy component less than 2mgKOH/g, avoid residual hydroxyl influence lacquer liquid package stability, also avoid because of acid number is low excessively, cause the shortcoming that resin viscosity is excessive, color is dark partially, range of molecular weight distributions is wide and then cause the enameled wire over-all properties to fluctuate; The hydroxyl value size is the use properties of decision enameled wire directly, hydroxyl value is lower than 150mgKOH/g, cross-linking density is on the low side behind the film curing, cause the enameled wire coat continuity to descend, and the saline infusion needle permeability can be relatively poor, hydroxyl value is higher than 300mgKOH/g, and the cross-linking density of paint film is corresponding higher, and then has influence on and ward off tin performance and snappiness.4. when synthetic blocked isocyanate component, polyol blend and MDI that employing is made up of at least a trivalent alcohol and a kind of dibasic alcohol carry out the part addition, because an amount of dibasic alcohol that uses, improved the ammonia ester bond content of whole system, thereby improved wire enamel ward off the tin performance, avoid effectively because of adding the problem of the proportional too high lacquer fluid viscosity rising workability difference that causes simultaneously, between employing/p-cresol and dimethylbenzene are reaction solvent, reacting balance, having avoided adopting dimethyl formamide is the trouble that solvent brought.
Embodiment
Below in conjunction with embodiment the present invention is further described in detail, but is not limited to this.
Raw materials used in following examples, except that other have indicate, be commercially available industrial goods.
One, the preparation of embodiment 1～5 hydroxy component
1, prescription sees Table 1
Table 1
| Material name | Consumption (g) | |||||
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | ||
| Diprotic acid | M-phthalic acid | 282 | 282 | 282 | 282 | 282 |
| Terephthalic acid | 282 | 282 | 282 | 282 | 282 | |
| Hexanodioic acid | 124 | 62 | 124 | 124 | 124 | |
| Tetra hydro Phthalic anhydride | - | 65 | - | - | - | |
| Dibasic alcohol | The 2-methyl isophthalic acid, ammediol | 253 | 253 | - | - | 173 |
| Neopentyl glycol | - | - | 292 | 146 | - | |
| Butyleneglycol | - | - | - | 126 | - | |
| Trivalent alcohol | Glycerine | 255 | 255 | 255 | 130 | 325 |
| Three (α-hydroxyethyl) isocyanic ester | - | - | - | 370 | - | |
| Resin properties | Hydroxyl value (mgKOH/g) | 235 | 225 | 228 | 180 | 273 |
| Acid number (mgKOH/g) | 1.4 | 1.7 | 1.6 | 1.6 | 1.4 | |
| Number-average molecular weight | 2570 | 2650 | 2650 | 3200 | 1830 | |
| Solids constituent (%) | 50 | 50.3 | 50 | 50 | 50 | |
Used esterification auxiliary agent is stannous octoate 0.05g and dibutyl tin laurate 0.05g in the foregoing description 1～5; Between used letdown solvent dun is/p-cresol 500g and dimethylbenzene 500g.
2, operating procedure
Respectively thermometer is being housed, in three mouthfuls of reaction flasks of fractionation plant, the diprotic acid of 1～5 number of columns of embodiment in the input table 1, dibasic alcohol and trivalent alcohol, add dimethylbenzene 5g and esterification auxiliary agent, temperature increasing for melting materials, open for 150 ℃ and stir, and under this temperature, be incubated 1 hour, progressively dehydration heats up, and rises to 200 ℃ with about 5 hours from 180 ℃, 200 ℃ the insulation 8 hours after sampling detecting acid number, behind acid number≤10mgKOH/g, begin to vacuumize, till acid number＜2mgKOH/g, between stopping being blended under the vacuum cool-down to 180 ℃/p-cresol 500g, be blended into dimethylbenzene 500g again, the after-filtration discharging that stirs, standby.
Two, the preparation of embodiment 6～7 blocked isocyanate components
1, prescription sees Table 2
Table 2
| Material name | Consumption | |||
| Embodiment 6 | Embodiment 7 | |||
| g | Equivalent | g | Equivalent | |
| MDI | 148 | 1.2 | 148 | 1.2 |
| TriMethylolPropane(TMP) | 16 | 0.4 | 16 | 0.4 |
| The 2-methyl isophthalic acid, ammediol | 16.5 | 0.4 | 8.3 | 0.2 |
| Neopentyl glycol | - | - | 9.3 | 0.2 |
| Xylenol | 73.2 | 0.6 | 73.2 | 0.6 |
2, operating procedure
Respectively in three mouthfuls of reaction flasks of drying that agitator, thermometer etc. are housed, the MDI of 6～7 number of columns of embodiment in the input table 2, between the adding reaction solvent/p-cresol 49.5g and dimethylbenzene 49.5g, after stirring, the trivalent alcohol and the dibasic alcohol that add metering, hierarchy of control temperature is after reacting 3 hours about 60 ℃, the encapsulant xylenol that adds metering, be warmed up to 120～130 ℃, be incubated 3～4 hours, sampling is cooled to 100 ℃ after surveying isocyanic acid root＜0.1%, between the adding letdown solvent dun/and p-cresol 58g and dimethylbenzene 58g, the after-filtration discharging that stirs is standby.
Three, the preparation of embodiment 8～12 polyurethane wire enamels of the present invention
1, prescription sees Table 3
Table 3
| Component | Consumption (g) | |||||
| Embodiment 8 | Embodiment 9 | Embodiment 10 | Embodiment 11 | Embodiment 12 | ||
| Hydroxy component | 350 (examples 1) | 450 (examples 2) | 300 (examples 5) | 400 (examples 4) | 350 (examples 3) | |
| The blocked isocyanate component | 450 (examples 6) | 450 (examples 6) | 500 (examples 6) | 400 (examples 6) | 450 (examples 7) | |
| Solvent | Cresols/phenol 1: 1 | 75 | 75 | 75 | 75 | 75 |
| Dimethylbenzene | 75 | 75 | 75 | 75 | 75 | |
| Flow agent (zinc naphthenate) | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | |
| NCO/OH equivalence ratio in the lacquer base | 1.1∶1 | 1.15∶1 | 1.0∶1 | 1.12∶1 | 1.2∶1 | |
| The lacquer fluid viscosity is coated with 4 glasss for 25 ℃, second | 32 | 30 | 30 | 34 | 32 | |
2, operating procedure
Respectively in joining paint can, hydroxy component in the input table 3 among the embodiment 8～12, blocked isocyanate component, flow agent, solvent, 50～60 ℃ of slakings 2～3 hours, promptly obtain polyurethane wire enamel of the present invention after stirring, outward appearance is pale yellow to the yellow transparent clarified liq, and 25 ℃ are coated with 4 glasss of viscosity is 30～34 seconds.
Five, The coating experiment
Wire enamel of the present invention with embodiment 8～12 preparations, on trier, carry out coated test, coating processes: 540 ℃ of annealing furnace temperature, baking oven inlet, temperature out are respectively 400 ℃ and 450 ℃, the japanning of employing felt, japanning road number is seven roads, and speed is 48m/min, and diameter of wire is 0.500mm.
Assay sees Table 4
Table 4
| The wire enamel that uses | Embodiment 8 | Embodiment 9 | Embodiment 10 | Embodiment 11 | Embodiment 12 | |
| Paint film property | Index | |||||
| The enameled wire external diameter, mm | 0.525～0.540 | 0.535 | 0.536 | 0.534 | 0.536 | 0.533 |
| Insulation thickness, mm | 0.035 | 0.036 | 0.034 | 0.036 | 0.033 | |
| Outward appearance | Smooth, evenly | By | By | By | By | By |
| Voltage breakdown, room temperature, kv | 4.0 | 6.2， 5.9，6.2 | 5.5， 6.3，6.2 | 6.3， 6.0，5.8 | 6.6， 6.4，6.3 | 5.9， 6.4，6.2 |
| Film integrity, hole count | 0 | 0 | 0 | 0 | 0 | 0 |
| Stretching salt solution pin hole 3%/5%/10%, hole count | 5/5/5 | 1/0/0 | 2/0/0 | 0/0/0 | 2/0/0 | 0/0/0 |
| Elongation, % | 25 | 30 | 30 | 27 | 33 | 30 |
| Snappiness | Do not ftracture | Qualified | Qualified | Qualified | Qualified | Qualified |
| Tack | Do not ftracture | Qualified | Qualified | Qualified | Qualified | Qualified |
| Heat is dashed, and does not split 2d/0.5h, ℃ | 200 | 200 | 210 | 210 | 220 | 200 |
| The softening puncture, ℃ | 230 | 240 | 240 | 240 | 250 | 240 |
| Ward off Xi Wendu, time, ℃, s | 390，≤5 | 360，4 | 360，4 | 360，3 | 360，5 | 360，4 |
| 375，2 | 375，2 | 375，1.5 | 375，2.5 | 375，2 | ||
Annotate: except that " stretching pin hole " adopted Japanese Industrial Standards (JIS), all the other all adopted the IEC-60317-51 standard in 1. showing;
2. " voltage breakdown " measured value of listing in the table represents to measure respectively the numerical value that three sections enameled wires obtain.
Claims (6)
- But 1, the H level polyurethane enamelled wire lacquer of the good cryogenic direct-welding of a kind of saline infusion needle permeability energy, it comprises hydroxy component, blocked isocyanate component, solvent, it is characterized in that:Described hydroxy component is the polyester polyol that contains terminal hydroxy group, and its acid number＜2mgKOH/g, hydroxyl value are that 150～300mgKOH/g, number-average molecular weight are 1500～5000; Synthetic this polyester polyol is raw materials used to have m-phthalic acid, terephthalic acid, hexanodioic acid, glycerine and a kind of dibasic alcohol at least, and m-phthalic acid: terephthalic acid: hexanodioic acid: glycerine: the weight ratio of dibasic alcohol is 1: (0.2～2): (0.2～0.5): (0.5～3): (0.5～1.5);Described blocked isocyanate component be by 4,4 '-'-diphenylmethane diisocyanate MDI after the addition of polyol blend part, form by the xylenol sealing again, reaction solvent be between/p-cresol and dimethylbenzene, polyol blend has dibasic alcohol and trivalent alcohol at least, and each is a kind of; MDI: trivalent alcohol: dibasic alcohol: the equivalence ratio of xylenol is 1: (0.125～0.4): (0.125～0.4): (0.5～1.2);Described solvent is phenols and aromatic hydrocarbons mixed solvent;In the described polyurethane wire enamel, the equivalence ratio of the hydroxyl of isocyanate group and hydroxy component is (0.9～1.2): 1.
- 2, polyurethane wire enamel according to claim 1 is characterized in that: the hexanodioic acid of synthetic described hydroxy component replaces with the phthalic acid anhydride component, and its replacement amount accounts in used diprotic acid gross weight≤and 15%.
- 3, polyurethane wire enamel according to claim 1, it is characterized in that: the glycerine of synthetic described hydroxy component partly replaces equivalence ratio≤1.5 of three (α-hydroxyethyl) isocyanic ester and other trivalent alcohols with three (α-hydroxyethyl) isocyanic ester or TriMethylolPropane(TMP).
- 4, polyurethane wire enamel according to claim 1 is characterized in that: the dibasic alcohol of synthetic described hydroxy component is the 2-methyl isophthalic acid, ammediol, 1, one or more in 4-butyleneglycol, neopentyl glycol, ethylene glycol, the Diethylene Glycol.
- 5, polyurethane wire enamel according to claim 1 is characterized in that: synthesize in the used polyol blend of described blocked isocyanate component, trivalent alcohol is one or more in glycerine, TriMethylolPropane(TMP), three (α-hydroxyethyl) isocyanic ester; Dibasic alcohol is a neopentyl glycol, 1,4-butyleneglycol, 2-methyl isophthalic acid, one or more in ammediol, the Diethylene Glycol.
- 6, polyurethane wire enamel according to claim 1 is characterized in that: the phenols that is used as described solvent is one or more in cresols, phenol, the xylenol; Aromatic hydrocarbons is one or more in toluene, dimethylbenzene, the heavy aromatic solvent.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100415858A CN100345924C (en) | 2004-08-03 | 2004-08-03 | Paint for H grade polyurethane enamelled wire with good saline water needle performace capable of directing welding at low temp. |
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| CNB2004100415858A CN100345924C (en) | 2004-08-03 | 2004-08-03 | Paint for H grade polyurethane enamelled wire with good saline water needle performace capable of directing welding at low temp. |
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Citations (1)
| 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 |
-
2004
- 2004-08-03 CN CNB2004100415858A patent/CN100345924C/en not_active Expired - Fee Related
Patent Citations (1)
| 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 |
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| CN102277079A (en) * | 2011-08-02 | 2011-12-14 | 上海晟然绝缘材料有限公司 | Non-pinhole rapid direct-welding polyurethane enamelled wire insulating varnish with high heat grade and preparation method thereof |
| CN111154393A (en) * | 2020-01-14 | 2020-05-15 | 北京理工大学 | Wire enamel composition with low friction coefficient and preparation method thereof |
| CN111154393B (en) * | 2020-01-14 | 2021-12-07 | 北京理工大学 | Wire enamel composition with low friction coefficient and preparation method thereof |
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