CN108470612A - Epoxy resins insulation surface charge suppressing method based on the processing of U-shaped gradient surface - Google Patents
Epoxy resins insulation surface charge suppressing method based on the processing of U-shaped gradient surface Download PDFInfo
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- CN108470612A CN108470612A CN201810167215.0A CN201810167215A CN108470612A CN 108470612 A CN108470612 A CN 108470612A CN 201810167215 A CN201810167215 A CN 201810167215A CN 108470612 A CN108470612 A CN 108470612A
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- epoxy resins
- resins insulation
- gradient
- surface charge
- suppressing method
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
- H01B19/04—Treating the surfaces, e.g. applying coatings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/50—Insulators or insulating bodies characterised by their form with surfaces specially treated for preserving insulating properties, e.g. for protection against moisture, dirt, or the like
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulating Bodies (AREA)
Abstract
The present invention discloses a kind of epoxy resins insulation surface charge suppressing method handled based on U-shaped gradient surface, which is characterized in that this method key step includes：First make epoxy resins insulation sample；Then U-shaped gradient design is carried out in epoxy resins insulation specimen surface：Specimen surface is divided into five close-connected regions, design surface conductance first reduces to be increased afterwards；Sample is placed in fluorination treatment equipment, different time, 25 DEG C of temperature, you can the epoxide resin material for the surface charge accumulation that is inhibited are managed at different locations according to dull distribution gradient.The present invention has important theory value and engineering significance to the safety for improving the performance and DC transmission system of GIL insulators.
Description
Technical field
The invention belongs to modified insulating materials and its preparation fields, and in particular to a kind of based on the processing of U-shaped gradient surface
Epoxy resins insulation surface charge suppressing method.
Background technology
With the fast development of high voltage power transmisson system, GIL (gas-insulated metal-enclosed pipeline) due to it is high with reliability,
The advantages that good economy performance, stress levels are high, transmission capacity is big, is gradually widely applied in recent years.Disc insulator is made
For the solid insulation in GIL equipment, surface is the most weak part of system insulation, the epoxy insulation meter in During Process of Long-term Operation
Area tires out a large amount of charges, may cause edge flashing.Epoxy resin has remarkable electricity, heat, mechanical property, is often used to manufacture
Disc insulator.Studies have shown that failure caused by epoxy insulation dielectric surface flashover occupies sizable ratio in total failare.Cause
This can to further increase GIL insulators to insulating materials progress surface modification so that it can accelerate the dissipation of surface charge
New thinking is provided by property, becomes the important channel for improving power system security and reliability.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of epoxies based on the processing of U-shaped gradient surface
Insulation resin surface charge suppressing method, by carrying out gradient fluorination treatment, the epoxy after gradient fluorination treatment to epoxy resin
Resin samples are distributed with two-dimensional gradient surface conductance, and surface charge accumulation is inhibited, the withstanding voltage enhancing of insulating materials,
Improve the operation stability of GIL and the safety of electric system.
The technical solution adopted by the present invention to solve the technical problems is：Epoxy resin based on the processing of U-shaped gradient surface
Insulating surface charge restraining method, this method comprises the following steps：
1) epoxy resins insulation sample is made：
(1) by epoxy resin-matrix and curing agent according to 3:1 mass ratio is mixed；
(2) mechanical agitation 60-90min；
(3) degassing process 40-60min；
(4) it pours into the mold for be coated with releasing agent and is heated to 70 DEG C, cure 4 hours；
(5) 130 DEG C are heated to, resolidification 4 hours；
(6) after being fully cured, cooling, demoulding can be obtained epoxy resins insulation sample；
2) U-shaped gradient design is carried out in epoxy resins insulation specimen surface：
(1) specimen surface is divided into five close-connected regions, design surface conductance first reduces to be increased afterwards；
(2) sample is placed in fluorination treatment equipment, different time is managed at different locations according to dull distribution gradient,
25 DEG C of temperature, you can the epoxide resin material for the surface charge accumulation that is inhibited.
(2) manage different time at different locations according to dull distribution gradient step by step in the step 2), wherein being fluorinated
Processing time is respectively 60min, 30min, 0min, 30min, 60min.
(2) manage different time at different locations according to dull distribution gradient step by step in the step 2), wherein being fluorinated
Processing time is respectively 45min, 15min, 0min, 15min, 45min.
(2) manage different time at different locations according to dull distribution gradient step by step in the step 2), wherein being fluorinated
Processing time is respectively 20min, 5min, 0min, 15min, 20min.
(1) epoxy resin-matrix is the bisphenol A epoxide resin of glycidol ethers step by step in the step 1).
(1) curing agent is low-molecular-weight polyamide resin HY-651 step by step in the step 1).
The gas that (2) fluorination treatment equipment uses step by step in the step 2) is N2/F2Volume ratio be 4/1 mixing
Gas.
Advantageous effect
Epoxy resin is carried out gradient fluorination treatment by the present invention, obtains the epoxide resin material of surface conductance gradient distribution,
The accumulation for effectively inhibiting surface charge is conducive to increase insulator DC flashover, promotes insulator electric durability energy.
The present invention carries out gradient fluorinated surface processing to epoxy specimens, and adjusts fluorination conditions, is formed surface graded
Fluorinated layer reduces the accumulation of surface charge.Research shows that after the processing of fluorine gas gradient, the surface conductivity gradient of sample is distributed
And numerical value increases, surface charge, which dissipates, to be accelerated.
Therefore to the research of surface fluorination gradient modification technology for the peace of the operation stability and electric system of raising GIL
Full property has important theory value and engineering significance.
Description of the drawings
Fig. 1 is epoxy resins insulation sample production flow diagram；
Fig. 2 is the epoxy specimens surface conductance distribution map of embodiment 1；
Fig. 3 is that the epoxy specimens of embodiment 1 are compared with the initial surface Potential distribution of untreated epoxy specimens
Figure；
Fig. 4 is that epoxy specimens surface takes a position view.
Specific implementation mode
Below by specific embodiments and the drawings, the present invention is further illustrated.The embodiment of the present invention is in order to more
So that those skilled in the art is more fully understood the present invention well, any limitation is not made to the present invention.
The present invention is based on the epoxy resins insulation surface charge suppressing methods of U-shaped gradient surface processing, and Fig. 1 is epoxy resin
Insulate sample production flow diagram, and Fig. 4 is that epoxy specimens surface takes a position view.
The epoxy resin-matrix that the present invention uses is the bisphenol A epoxide resin of glycidol ethers；Curing agent is low molecular weight
Polyamide HY-651；It is volume ratio N to be fluorinated the gas used2/F2=4/1 mixed gas, and by the global gas in Tianjin
Co., Ltd provides.
Embodiment 1
1) by epoxy resin-matrix and curing agent according to 3:1 mass ratio is mixed, and is stirred using mechanical agitator
60min；Then 40min is de-gassed to epoxy resin composition using aspiration pump and vacuum tank；Then it is poured into painting
Have in the mold of releasing agent, solidification, it is cooling, demould to get：
Wherein, epoxy resin is handled using gradient temperature solidification method：Solidification process is divided into two steps, first adds mold and base-material
Then heat is again heated to 130 DEG C and cures 4 hours to curing 4 hours at 70 DEG C, after being fully cured, cooling, demoulding can be obtained ring
Oxygen insulation resin sample；
2) U-shaped gradient design is carried out on epoxy specimens surface, specimen surface is divided into five close-connected regions,
Design surface conductance first reduces to be increased afterwards.Sample is placed in fluorination treatment equipment, according to dull distribution gradient in different positions
Processing different time is set, the fluorination treatment time is respectively 60min, 30min, 0min, 30min, 60min, 25 DEG C of temperature, you can
To the epoxide resin material for inhibiting surface charge accumulation.
Fig. 2 is the epoxy specimens surface conductance distribution map of embodiment 1；
Fig. 3 is that the epoxy specimens of embodiment 1 are compared with the initial surface Potential distribution of untreated epoxy specimens
Figure.
Show after the processing of fluorine gas gradient, the distribution of surface conductivity gradient and numerical value increase of sample, surface charge dissipation
Accelerate.
Embodiment 2
1) by epoxy resin-matrix and curing agent according to 3:1 mass ratio is mixed, and is stirred using mechanical agitator
70min.Then 50min is de-gassed to epoxy resin composition using aspiration pump and vacuum tank, is then poured into painting
Have in the mold of releasing agent, solidification, it is cooling, demould to get：
Wherein, epoxy resin is handled using gradient temperature solidification method.Solidification process is divided into two steps, first adds mold and base-material
Then heat is again heated to 130 DEG C and cures 4 hours to curing 4 hours at 70 DEG C, after being fully cured, cooling, demoulding can be obtained ring
Oxygen insulation resin sample.
2) U-shaped gradient design is carried out on epoxy specimens surface, specimen surface is divided into five close-connected regions,
Design surface conductance first reduces to be increased afterwards.Sample is placed in fluorination treatment equipment, according to dull distribution gradient in different positions
Processing different time is set, the fluorination treatment time is respectively 45min, 15min, 0min, 15min, 45min, 25 DEG C of temperature, you can
To the epoxide resin material for inhibiting surface charge accumulation.
Embodiment 3
1) by epoxy resin-matrix and curing agent according to 3:1 mass ratio is mixed, and is stirred using mechanical agitator
90min.Then 60min is de-gassed to epoxy resin composition using aspiration pump and vacuum tank, is then poured into painting
Have in the mold of releasing agent, solidification, it is cooling, demould to get：
Wherein, epoxy resin is handled using gradient temperature solidification method.Solidification process is divided into two steps, first adds mold and base-material
Then heat is again heated to 130 DEG C and cures 4 hours to curing 4 hours at 70 DEG C, after being fully cured, cooling, demoulding can be obtained ring
Oxygen insulation resin sample.
2) U-shaped gradient design is carried out on epoxy specimens surface, specimen surface is divided into five close-connected regions,
Design surface conductance first reduces to be increased afterwards.Sample is placed in fluorination treatment equipment, according to dull distribution gradient in different positions
Processing different time is set, the fluorination treatment time is respectively 20min, 5min, 0min, 15min, 20min, 25 DEG C of temperature, you can
To the epoxide resin material for inhibiting surface charge accumulation.
Claims (7)
1. the epoxy resins insulation surface charge suppressing method based on the processing of U-shaped gradient surface, which is characterized in that this method includes
Following steps：
1) epoxy resins insulation sample is made：
(1) by epoxy resin-matrix and curing agent according to 3:1 mass ratio is mixed；
(2) mechanical agitation 60-90min；
(3) degassing process 40-60min；
(4) it pours into the mold for be coated with releasing agent and is heated to 70 DEG C, cure 4 hours；
(5) 130 DEG C are heated to, resolidification 4 hours；
(6) after being fully cured, cooling, demoulding can be obtained epoxy resins insulation sample；
2) U-shaped gradient design is carried out in epoxy resins insulation specimen surface：
(1) specimen surface is divided into five close-connected regions, design surface conductance first reduces to be increased afterwards；
(2) sample is placed in fluorination treatment equipment, different time, temperature is managed at different locations according to dull distribution gradient
25 DEG C, you can the epoxide resin material for the surface charge accumulation that is inhibited.
2. the epoxy resins insulation surface charge suppressing method according to claim 1 based on linear gradient surface treatment,
It is characterized in that, (2) manage different time, wherein fluorine at different locations according to dull distribution gradient step by step in the step 2)
It is respectively 60min, 30min, 0min, 30min, 60min to change processing time.
3. the epoxy resins insulation surface charge suppressing method according to claim 1 based on linear gradient surface treatment,
It is characterized in that, (2) manage different time, wherein fluorine at different locations according to dull distribution gradient step by step in the step 2)
It is respectively 45min, 15min, 0min, 15min, 45min to change processing time.
4. the epoxy resins insulation surface charge suppressing method according to claim 1 based on linear gradient surface treatment,
It is characterized in that, (2) manage different time, wherein fluorine at different locations according to dull distribution gradient step by step in the step 2)
It is respectively 20min, 5min, 0min, 15min, 20min to change processing time.
5. the epoxy resins insulation surface charge suppressing method according to claim 1 based on linear gradient surface treatment,
It is characterized in that, (1) epoxy resin-matrix is the bisphenol A epoxide resin of glycidol ethers step by step in the step 1).
6. the epoxy resins insulation surface charge suppressing method according to claim 1 based on linear gradient surface treatment,
It is characterized in that, (1) curing agent is low-molecular-weight polyamide resin HY-651 step by step in the step 1).
7. the epoxy resins insulation surface charge suppressing method according to claim 1 based on linear gradient surface treatment,
It is characterized in that, the gas that (2) fluorination treatment equipment uses step by step in the step 2) is N2/F2Volume ratio be 4/1 it is mixed
Close gas.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810167215.0A CN108470612B (en) | 2018-02-28 | 2018-02-28 | Epoxy resin insulation surface charge inhibition method based on U-shaped gradient surface treatment |
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|---|---|---|---|
| CN201810167215.0A CN108470612B (en) | 2018-02-28 | 2018-02-28 | Epoxy resin insulation surface charge inhibition method based on U-shaped gradient surface treatment |
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| CN108470612A true CN108470612A (en) | 2018-08-31 |
| CN108470612B CN108470612B (en) | 2020-01-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111916265A (en) * | 2020-07-28 | 2020-11-10 | 南方电网科学研究院有限责任公司 | Insulating part and preparation method thereof |
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|---|---|---|---|---|
| CN101840757A (en) * | 2010-05-21 | 2010-09-22 | 扬州东宇电气有限公司 | Manufacturing method for environment-friendly type insulator shell |
| CN104371133A (en) * | 2014-11-04 | 2015-02-25 | 天津学子电力设备科技有限公司 | Method for eliminating electrostatic charges on surface of basin-type insulator in GIS |
| CN105542399A (en) * | 2016-01-18 | 2016-05-04 | 西安交通大学 | Centrifugal manufacturing method for dielectric functional gradient insulator |
| CN105679473A (en) * | 2016-01-18 | 2016-06-15 | 西安交通大学 | Lamination fabrication method of dielectric functionally graded insulator |
-
2018
- 2018-02-28 CN CN201810167215.0A patent/CN108470612B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101840757A (en) * | 2010-05-21 | 2010-09-22 | 扬州东宇电气有限公司 | Manufacturing method for environment-friendly type insulator shell |
| CN104371133A (en) * | 2014-11-04 | 2015-02-25 | 天津学子电力设备科技有限公司 | Method for eliminating electrostatic charges on surface of basin-type insulator in GIS |
| CN105542399A (en) * | 2016-01-18 | 2016-05-04 | 西安交通大学 | Centrifugal manufacturing method for dielectric functional gradient insulator |
| CN105679473A (en) * | 2016-01-18 | 2016-06-15 | 西安交通大学 | Lamination fabrication method of dielectric functionally graded insulator |
Non-Patent Citations (1)
| Title |
|---|
| 张冠军等: "《介电功能梯度材料在电气绝缘领域的研究进展》", 《中国电机工程学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111916265A (en) * | 2020-07-28 | 2020-11-10 | 南方电网科学研究院有限责任公司 | Insulating part and preparation method thereof |
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