RU2161341C1 - Compound for producing stable electric insulating coating on electric-steel surfaces - Google Patents
Compound for producing stable electric insulating coating on electric-steel surfaces Download PDFInfo
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- RU2161341C1 RU2161341C1 RU99113084/09A RU99113084A RU2161341C1 RU 2161341 C1 RU2161341 C1 RU 2161341C1 RU 99113084/09 A RU99113084/09 A RU 99113084/09A RU 99113084 A RU99113084 A RU 99113084A RU 2161341 C1 RU2161341 C1 RU 2161341C1
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- water
- thiourea
- glycerin
- urea
- phthalic anhydride
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- 238000000576 coating method Methods 0.000 title claims abstract description 24
- 239000011248 coating agent Substances 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 title claims description 6
- 239000010959 steel Substances 0.000 title claims description 6
- 150000001875 compounds Chemical class 0.000 title abstract 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 20
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 13
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 13
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 12
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000004202 carbamide Substances 0.000 claims abstract description 7
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 claims abstract description 6
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000004327 boric acid Substances 0.000 claims abstract description 6
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 claims abstract description 6
- 235000019441 ethanol Nutrition 0.000 claims abstract description 6
- 235000011187 glycerol Nutrition 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 21
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 8
- 239000004094 surface-active agent Substances 0.000 claims description 7
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 claims description 6
- 238000004870 electrical engineering Methods 0.000 abstract description 2
- 239000011149 active material Substances 0.000 abstract 2
- 235000011007 phosphoric acid Nutrition 0.000 abstract 2
- 229910019142 PO4 Inorganic materials 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 abstract 1
- 238000009413 insulation Methods 0.000 abstract 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 1
- 239000010452 phosphate Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 150000002191 fatty alcohols Chemical class 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 229920003086 cellulose ether Polymers 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- YVIVRJLWYJGJTJ-UHFFFAOYSA-N gamma-Valerolactam Chemical compound CC1CCC(=O)N1 YVIVRJLWYJGJTJ-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012875 nonionic emulsifier Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
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Abstract
Description
Изобретение относится к области электротехники, а именно к композициям для изготовления покрытий на электротехнических сталях для магнитопроводов электрических машин и аппаратов. The invention relates to the field of electrical engineering, and in particular to compositions for the manufacture of coatings on electrical steel for magnetic circuits of electrical machines and apparatuses.
Целью изобретения является создание композиции на основе поливинилового спирта (ПВС) для получения термически устойчивого покрытия на изотропной стали, не теряющего своих диэлектрических характеристик после высокотемпературного отжига. The aim of the invention is to create a composition based on polyvinyl alcohol (PVA) to obtain a thermally stable coating on isotropic steel, not losing its dielectric characteristics after high temperature annealing.
Известны электроизоляционные композиции для изготовления покрытий на электротехнических сталях на основе ортофосфорной кислоты, бутадиен-стирольного латекса, γ- бутиролактама или γ-валеролактама, фракции жирных спиртов C7-C12 и воды, при этом качество покрытия обеспечивается введением фракции жирных спиртов (Авт. свидетельство СССР N 1568081).Electrical insulation compositions are known for the manufacture of coatings on electrical steels based on phosphoric acid, styrene-butadiene latex, γ-butyrolactam or γ-valerolactam, the C 7 -C 12 fatty alcohol fraction and water, while the coating quality is ensured by the introduction of the fatty alcohol fraction (Auth. USSR certificate N 1568081).
Известна смесь для электроизоляционного покрытия, содержащего латекс этиленпропиленового каучука, целлюлозный эфир, неионогенный эмульгатор, воск и стабилизатор, предохраняющий от старения (Патент ГДР N 274512). Недостатком этих композиций является их гетерогенность из-за нерастворимости органических компонентов в воде. Следствием этого является неоднородность покрытий по толщине, выпадение компонентов из раствора при пониженных температурах, образование пробок в системах транспортировки композиций при нарушении температурного режима и соотношения компонентов. A known mixture for an electrical insulating coating containing latex of ethylene propylene rubber, cellulose ether, nonionic emulsifier, wax and anti-aging stabilizer (Patent GDR N 274512). The disadvantage of these compositions is their heterogeneity due to the insolubility of organic components in water. The consequence of this is the heterogeneity of the coatings in thickness, the precipitation of components from the solution at low temperatures, the formation of plugs in the transportation systems of the compositions in violation of the temperature regime and the ratio of the components.
Этих недостатков лишены композиции на основе водорастворимых полимеров, в частности поливинилового спирта (ПВС). Использование ПВС для получения покрытий позволяет также увеличить их диэлектрические свойства и штампуемость (Авт. свидетельство СССР N 1575587). These disadvantages are deprived of a composition based on water-soluble polymers, in particular polyvinyl alcohol (PVA). The use of PVA to obtain coatings also makes it possible to increase their dielectric properties and stampability (Aut. USSR Certificate N 1575587).
Наиболее близким прототипом предлагаемого изобретения является состав на основе поливинилового спирта, фосфорной кислоты и воды (покрытие "Изорт"), используемое для получения электроизоляционного покрытия (Авт. свидетельство СССР N 1575587). The closest prototype of the present invention is a composition based on polyvinyl alcohol, phosphoric acid and water (Izort coating), used to obtain an electrical insulation coating (USSR Author's Certificate N 1575587).
Недостатком данной композиции является довольно большая толщина образующегося покрытия и невысокая термостабильность при сушке в процессе нанесения на электротехническую сталь. The disadvantage of this composition is the rather large thickness of the resulting coating and low thermal stability during drying during application to electrical steel.
Предлагаемая композиция содержит наряду с ПВС, ортофосфорной кислотой и водой этиловый спирт, глицерин, фталевый ангидрид, борную кислоту, мочевину, тиомочевину и поверхностно-активное вещество. образующееся при взаимодействии 1,1,2,2,3,3,4,4,5,5,6,6-додекафтор-1H-гептан-7-ола с пятиокисью фосфора. The proposed composition contains, along with PVA, phosphoric acid and water, ethyl alcohol, glycerin, phthalic anhydride, boric acid, urea, thiourea and a surfactant. formed by the interaction of 1,1,2,2,3,3,4,4,5,5,6,6-dodecafluoro-1H-heptane-7-ol with phosphorus pentoxide.
Приготовление композиции осуществляется следующим образом: в воде (приблизительно 800 - 850 г/л), при температуре 60-85oC в указанной последовательности растворяют ПВС (50 - 80 г/л), ортофосфорную кислоту (12,0 - 15,0 г/л), мочевину (3,0-15,0 г/л), тиомочевину (0 - 6,0 г/л), глицерин (0 - 20,0 г/л), фталевый ангидрид (0 - 6,0 г/л), борную кислоту (0 - 5,0 г/л) поверхностно-активное вещество (3,0 - 6,0 г/л) и этиловый спирт (10,0 - 50,0 г/л). По достижении полного растворения компонентов в воде допускается добавление воды для доведения общего объема смеси до 1 л. ПАВ готовится предварительно и получается при взаимодействии 1,1,2,2,3,3,4,4,5,5,6,6-додекафтор-1Н-гептан-7-ола с пятиокисью фосфора при 40-60oC в течение 4-20 ч и представляющего собой смесь моно- и диэфиров фосфорной кислоты с полифторированным спиртом общей формулы:
Использование ПАВ в композициях в концентрации 0,4-0,5% позволяет получать равномерные, тонкие и одинаковые по толщине покрытия с хорошей адгезией к электротехническим сталям после высокотемпературного отжига.The preparation of the composition is as follows: in water (approximately 800 - 850 g / l), at a temperature of 60-85 o C in the specified sequence, dissolve PVA (50 - 80 g / l), phosphoric acid (12.0 - 15.0 g / l), urea (3.0-15.0 g / l), thiourea (0 - 6.0 g / l), glycerin (0 - 20.0 g / l), phthalic anhydride (0 - 6.0 g / l), boric acid (0 - 5.0 g / l) surfactant (3.0 - 6.0 g / l) and ethyl alcohol (10.0 - 50.0 g / l). Upon achievement of the complete dissolution of the components in water, the addition of water is allowed to bring the total volume of the mixture to 1 liter. A surfactant is prepared in advance and is obtained by the interaction of 1,1,2,2,3,3,4,4,5,5,6,6,6-dodecafluoro-1H-heptane-7-ol with phosphorus pentoxide at 40-60 o C for 4-20 hours and which is a mixture of mono- and diesters of phosphoric acid with polyfluorinated alcohol of the general formula:
The use of surfactants in compositions in a concentration of 0.4-0.5% allows you to get uniform, thin and uniform in thickness coatings with good adhesion to electrical steels after high-temperature annealing.
Для нанесения полосу электротехнической стали обрабатывают композицией 2-5 с, излишки удаляют гуммированным валиком. Сушка покрытия производится при температуре 400-600oC. Исследование термостойкости покрытия, измерение коэффициента сопротивления и испытание сцепления покрытия с металлом производят по ГОСТ 21427-83.For application, a strip of electrical steel is treated with a composition for 2-5 s, the excess is removed with a gummed roller. Drying of the coating is carried out at a temperature of 400-600 o C. the Study of the heat resistance of the coating, the measurement of the coefficient of resistance and the test of adhesion of the coating with the metal produced in accordance with GOST 21427-83.
Составы композиций и свойства электроизоляционных покрытий на их основе приведены в таблице. The compositions and properties of electrical insulating coatings based on them are given in the table.
Сравнение свойств покрытий проводили с покрытием "Изорт" (ТИ 118-ПХЛ-13-4-91). Comparison of the properties of the coatings was carried out with an Izort coating (TI 118-PHL-13-4-91).
Толщину покрытий измеряли на приборе CIS/C-2550 Interlaminator resistivity testor. Термообработку образцов для испытания термостойкости покрытия производили в атмосфере азот-водород 95:5. Coating thickness was measured on a CIS / C-2550 Interlaminator resistivity testor. Heat treatment of samples for testing the heat resistance of the coating was performed in a nitrogen-hydrogen atmosphere of 95: 5.
Пример: для приготовления 1000 мл композиции (композиция N 11 в таблице результатов измерений) к 800 г деионизированной воды, нагретой до 80-85oC, добавляли 50 г ПВС, перемешивали в течение 10-12 ч до полного растворения, затем добавляли 5 г ПАВ, 10 г мочевины, охлаждали до 50-60oC и медленно добавляли 15 г ортофосфорной кислоты. После перемешивания в течение 2 ч к полученному составу добавляли 50 г этилового спирта и воды до общего объема в 1 л и наносили на полосу изотропной стали. После сушки замеряли электрическое сопротивление покрытия, полосу подвергали термической обработке и снова замеряли сопротивление покрытия. Результаты измерений приведены в таблице.Example: to prepare 1000 ml of the composition (composition No. 11 in the table of measurement results), 50 g of PVA was added to 800 g of deionized water heated to 80-85 o C, stirred for 10-12 h until complete dissolution, then 5 g Surfactant, 10 g of urea, was cooled to 50-60 o C and slowly added 15 g of phosphoric acid. After stirring for 2 hours, 50 g of ethyl alcohol and water were added to the resulting composition to a total volume of 1 liter and applied to a strip of isotropic steel. After drying, the electrical resistance of the coating was measured, the strip was heat-treated, and the resistance of the coating was measured again. The measurement results are shown in the table.
Остальные составы готовили по аналогичной методике. The remaining compositions were prepared by a similar method.
Claims (1)
Поливиниловый спирт - 50,0 - 80,0
Ортофосфорная кислота - 12,0 - 15,0
Мочевина - 3,0 - 15,0
Тиомочевина - 0 - 6,0
Глицерин - 0 - 20,0
Этиловый спирт - 10,0 - 50,0
Фталевый ангидрид - 0 - 6,0
Борная кислота - 0 - 5,0
Поверхностно-активное вещество - 3,0 - 6,0
Вода - До общего объема в 1 лоComposition for creating a thermally stable electrical insulating coating on electrical steels containing polyvinyl alcohol, phosphoric acid and water, characterized in that it further comprises urea, thiourea, ethyl alcohol, glycerin, phthalic anhydride, boric acid and a surface-active substance obtained by the reaction, 1 , 1,2,2,3,3,4,4,5,5,6,6-dodecafluoro-1H-heptane-7-ol with phosphorus pentoxide in the following components, g / l:
Polyvinyl alcohol - 50.0 - 80.0
Phosphoric acid - 12.0 - 15.0
Urea - 3.0 - 15.0
Thiourea - 0 - 6.0
Glycerin - 0 - 20.0
Ethyl alcohol - 10.0 - 50.0
Phthalic Anhydride - 0 - 6.0
Boric acid - 0 - 5.0
Surfactant - 3.0 - 6.0
Water - Up to a total volume of 1 liter
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU99113084/09A RU2161341C1 (en) | 1999-06-16 | 1999-06-16 | Compound for producing stable electric insulating coating on electric-steel surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU99113084/09A RU2161341C1 (en) | 1999-06-16 | 1999-06-16 | Compound for producing stable electric insulating coating on electric-steel surfaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RU2161341C1 true RU2161341C1 (en) | 2000-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU99113084/09A RU2161341C1 (en) | 1999-06-16 | 1999-06-16 | Compound for producing stable electric insulating coating on electric-steel surfaces |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2225650C2 (en) * | 2002-02-20 | 2004-03-10 | Каренина Лариса Соломоновна | Compound for producing heat-resistant sealed insulating coating on electric steels |
| RU2678316C1 (en) * | 2018-02-15 | 2019-01-28 | Закрытое акционерное общество "ФК" | Composition for electrical insulation of isotropic electrical steel |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3931027A (en) * | 1973-06-25 | 1976-01-06 | Mcgraw-Edison Company | Cellulose material treated with a thermosetting resin and having improved physical properties at elevated temperatures |
| DE2739717B2 (en) * | 1976-09-03 | 1979-07-26 | Hitachi Chemical Co., Ltd., Tokio | Composition for electrically insulating coatings |
| US4299713A (en) * | 1979-07-19 | 1981-11-10 | National Distillers And Chemical Corp. | Electrical tree and water tree resistant polymer compositions |
| SU1568081A1 (en) * | 1987-12-24 | 1990-05-30 | Bujskij Khim Z | Electric insulating composition |
| RU2096849C1 (en) * | 1996-01-10 | 1997-11-20 | Акционерное общество "Новолипецкий металлургический комбинат" | Electric insulation composition |
| RU2121178C1 (en) * | 1996-12-16 | 1998-10-27 | Акционерное общество "ФК" | Water-soluble composition for insulation coating of electric steel |
| RU2127921C1 (en) * | 1997-12-03 | 1999-03-20 | Акционерное общество "ФК" | Compound for producing insulating coating |
-
1999
- 1999-06-16 RU RU99113084/09A patent/RU2161341C1/en not_active IP Right Cessation
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3931027A (en) * | 1973-06-25 | 1976-01-06 | Mcgraw-Edison Company | Cellulose material treated with a thermosetting resin and having improved physical properties at elevated temperatures |
| DE2739717B2 (en) * | 1976-09-03 | 1979-07-26 | Hitachi Chemical Co., Ltd., Tokio | Composition for electrically insulating coatings |
| US4299713A (en) * | 1979-07-19 | 1981-11-10 | National Distillers And Chemical Corp. | Electrical tree and water tree resistant polymer compositions |
| SU1568081A1 (en) * | 1987-12-24 | 1990-05-30 | Bujskij Khim Z | Electric insulating composition |
| RU2096849C1 (en) * | 1996-01-10 | 1997-11-20 | Акционерное общество "Новолипецкий металлургический комбинат" | Electric insulation composition |
| RU2121178C1 (en) * | 1996-12-16 | 1998-10-27 | Акционерное общество "ФК" | Water-soluble composition for insulation coating of electric steel |
| RU2127921C1 (en) * | 1997-12-03 | 1999-03-20 | Акционерное общество "ФК" | Compound for producing insulating coating |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2225650C2 (en) * | 2002-02-20 | 2004-03-10 | Каренина Лариса Соломоновна | Compound for producing heat-resistant sealed insulating coating on electric steels |
| RU2678316C1 (en) * | 2018-02-15 | 2019-01-28 | Закрытое акционерное общество "ФК" | Composition for electrical insulation of isotropic electrical steel |
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