CN1045212C - Preparation method of compounded paste for encapsulating winding of electric motor and electrical equipment - Google Patents
Preparation method of compounded paste for encapsulating winding of electric motor and electrical equipment Download PDFInfo
- Publication number
- CN1045212C CN1045212C CN93111325A CN93111325A CN1045212C CN 1045212 C CN1045212 C CN 1045212C CN 93111325 A CN93111325 A CN 93111325A CN 93111325 A CN93111325 A CN 93111325A CN 1045212 C CN1045212 C CN 1045212C
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- China
- Prior art keywords
- composite gum
- parts
- preparation
- electrical equipment
- compounded
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- Compositions Of Macromolecular Compounds (AREA)
- Macromonomer-Based Addition Polymer (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The present invention relates to a preparation method of compounded paste for encapsulating windings of motors and electrical appliances, which comprises: pulverized coal ash is added to S-148 aromatic alcohol unsaturated polyester resin to prepare the compounded paste; then, the windings of motors and electrical appliances are encapsulated at 10 to 40 DEG C and solidified at 20 to 90 DEG C. The present invention has the advantages of low cost, excellent moisture resistance, chemical resistance, electric performance, favorable heat radiation and H-grade heat resistance grade of motors. The present invention also provides melting liquid of the compounded paste which is composed of trichloromethane, alcohol and benzene. The compounded paste is immersed in the melting liquid and can be melted after 2 to 6 hours at room temperature.
Description
The present invention is a kind of motor, electrical equipment encapsulating winding NEW TYPE OF COMPOSITE glue preparation method of being used for.
Mostly the material that is used for motor, electrical equipment encapsulating winding at present is to adopt liquid epoxies, in order to increase thermal conductivity, to reduce shrinking percentage, the normal fillers such as silicon-dioxide, aluminum oxide that add, so not only pharmaceutical chemicals takes expensive, the service temperature height, and poor heat resistance, the more important thing is the winding of embedding easy-maintaining not.
The purpose of this invention is to provide a kind of composite gum that is used for motor, electrical equipment encapsulating winding.The present invention implements like this: add 3～10 parts of dibutyl phthalates in 100 parts of fragrant and mellow unsaturated polyester resins of (mass fraction) S-148, stir; Under 20～60 ℃ of temperature, add 40～150 parts of flyash, stir; Under 10～40 ℃ temperature, add 2～5 parts of cyclohexanone peroxides (catalyzer) then, stir evenly; Adding 2～5 parts of cobalt naphthenate-benzene hexene solution (promotor), fully stir evenly, promptly get uncured composite gum, immediately motor, electrical equipment winding are carried out embedding.
The fragrant and mellow unsaturated polyester resin of S-148 is the formal commodity that stay in No. 53 Inst., China Ministry of Ordnance Industry's production of Jinan City, has superior heat resistance performance, corrosion resistance nature, the novel unsaturated polyester resin of excellent mechanical performances.
The viscosity controller of the fragrant and mellow unsaturated polyester resin of S-148 is 30～60s (being coated with-4,25 ℃), and is excessive as viscosity, needs to add 1～3 part of vinylbenzene and regulates, and makes it have good mobility.Adding 3～10 parts of dibutyl phthalates, is to be difficult for being uniformly dispersed in order to increase.Add flyash and can improve the thermal conductivity of composite gum, and reduce cost greatly.Or add 160～320 purpose silicon dioxide powders and also can play same purpose for 40～150 parts.
Temperature can be in 20～60 ℃ of scopes when adding flyash, and the temperature usury is in mixing, and temperature is in 10～40 ℃ of scopes when adding catalyzer and promotor, and it is fast that temperature is crossed high curing rate, and the operating time is short, is difficult for carrying out embedding.
Above-mentioned uncured composite gum was at room temperature placed one day, or curing got final product the demoulding in 3 hours under 40～60 ℃ temperature environment, heated can obtain completely crued composite gum in 4～6 hours under 70～90 ℃ temperature.
Composite gum performance: anti-strong acid, highly basic, humidity resistance excellence, perfect heat-dissipating, cure shrinkage≤0.1%, surface resistivity (back makes moist) 〉=1 * 10
8M Ω, volume specific resistance 〉=1 * 10
6M Ω m, dielectric strength 〉=20KV/mm, temperature classification can reach the H level of motor.
The present invention also provides a kind of removing liquid of composite gum.
After the composite gum completely solidified of the present invention,, when the electrical equipment winding keeps in repair, composite gum can be immersed in 60～90% chloroforms, 5～30% alcohol, 5～10% benzene mixing solutionss, at room temperature soak and to dissolve in 2～6 hours when motor to embedding.
Characteristics of the present invention are: preparation technology is simple for this composite gum, and service temperature is low, and shrinking percentage is little, and the pharmaceutical chemicals expense is low, and resistance toheat is good.Embedding motor, electrical equipment winding can prevent vibration friction between winding, have excellent moistureproofness, chemical resistant properties, electrical property, and thermal diffusivity is good.Composite gum after the curing can be separated liquefaction with multiple and gel and be separated, thereby is convenient to the winding after the embedding is keeped in repair.
Best embodiment:
One, the preparation of composite gum
Take by weighing 10 kilograms of fragrant and mellow unsaturated polyester resins of S-148, viscosity is 45s (being coated with-4,25 ℃), adds 0.5 kilogram of dibutyl phthalate, stirs under 30 ℃, adds 10 kilogram of 200 order flyash, stirs.Add 0.3 kilogram of cyclohexanone peroxide (catalyzer) then, stir evenly; Add 0.3 kilogram of cobalt naphthenate-styrene solution (promotor) again, stir.Under the room temperature, the demoulding in a day, curing promptly got completely crued composite gum in 4 hours under 90 ℃ then.
Two, the preparation of composite gum removing liquid
Get 7 kilograms of chloroforms, 2.5 kilograms of alcohol promptly get removing liquid after 0.5 kilogram of benzene mixes.Composite gum immerses removing liquid, and room temperature beginning in following 30 minutes swelling was dissolved in 4 hours fully.
Claims (2)
1, a kind of preparation method of compounded paste that is used for motor, electrical equipment encapsulating winding is made up of the removing liquid of composite gum and composite gum.Its feature:
A. composite gum is to add 3～10 parts of dibutyl phthalates in 100 parts of fragrant and mellow unsaturated polyester resins of S-148 of quality, stirs; Under 20～60 ℃ of temperature, add 40～150 parts of flyash, stir; Under 10～40 ℃ temperature, add 2～5 parts of cyclohexanone peroxide catalyzer then, stir evenly; Adding 2～5 parts of cobalt naphthenate-benzene hexene solution promotor, fully stir evenly, promptly get uncured composite gum.
B, composite gum removing liquid are mixed and are formed by 60～90% chloroform, 5～30% alcohol, 5～10% benzene, and the solidified composite gum at room temperature is immersed in this removing liquid 2～6 hours and can dissolves.
2, the preparation method of compounded paste that is used for the electrical equipment and electrical encapsulating winding according to claim 1, the granularity that it is characterized in that said flyash is in 160～320 order scopes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93111325A CN1045212C (en) | 1993-07-01 | 1993-07-01 | Preparation method of compounded paste for encapsulating winding of electric motor and electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93111325A CN1045212C (en) | 1993-07-01 | 1993-07-01 | Preparation method of compounded paste for encapsulating winding of electric motor and electrical equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1089983A CN1089983A (en) | 1994-07-27 |
| CN1045212C true CN1045212C (en) | 1999-09-22 |
Family
ID=4989120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93111325A Expired - Fee Related CN1045212C (en) | 1993-07-01 | 1993-07-01 | Preparation method of compounded paste for encapsulating winding of electric motor and electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1045212C (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102217A (en) * | 1985-04-01 | 1986-08-06 | 中国科学院长春应用化学研究所 | Fill-sealing material of cable plug for motor submerged in oil |
| CN1053254A (en) * | 1990-01-14 | 1991-07-24 | 烟台市能源监测站 | Plasticable magnetic plaster material for motor wire groove and compound method |
-
1993
- 1993-07-01 CN CN93111325A patent/CN1045212C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102217A (en) * | 1985-04-01 | 1986-08-06 | 中国科学院长春应用化学研究所 | Fill-sealing material of cable plug for motor submerged in oil |
| CN1053254A (en) * | 1990-01-14 | 1991-07-24 | 烟台市能源监测站 | Plasticable magnetic plaster material for motor wire groove and compound method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1089983A (en) | 1994-07-27 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |