CN109575339A - A kind of the nano coating insulator and preparation method of resistance to direct current flashover - Google Patents
A kind of the nano coating insulator and preparation method of resistance to direct current flashover Download PDFInfo
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- CN109575339A CN109575339A CN201811457525.2A CN201811457525A CN109575339A CN 109575339 A CN109575339 A CN 109575339A CN 201811457525 A CN201811457525 A CN 201811457525A CN 109575339 A CN109575339 A CN 109575339A
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- nano
- insulator
- coating
- curing agent
- rotary table
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
Abstract
The invention discloses the nano coating insulators and preparation method of a kind of flashover of resistance to direct current: insulator body is using the rotary table insulator as made of epoxy resin and the casting of alumina composite insulating materials；The insulator body surface is coated with nano coating, and the nano coating coating is made of nano paint matrix, curing agent, nanofiller；Preparation method includes two step of preparation and insulator surface coated with nano coating of nano paint.The present invention is gathered using the method enforced insulator surface like charges of nano surface coating, to achieve the purpose that improve insulator edge flashing voltage.
Description
Technical field
The present invention relates to a kind of insulator and methods, and more specifically, it relates to a kind of nano coatings of flashover of resistance to direct current
Insulator and preparation method.
Background technique
The transmission of electricity of high voltage direct current pipeline has many advantages, such as transmission capacity is big, high reliablity and occupied area are small.Pillar is exhausted
Edge edge flashing is the most common failure form and limiting factor of direct current GIL (Gas Insulated Lines).Therefore, try
The edge flashing voltage for improving direct current GIL support insulator, for improving the functional reliability of GIL and further reducing pipeline ruler
It is very little to be of great significance.Insulator Under DC Voltage surface Accumulating charge will affect field distribution, the circle used for the present invention
For mesa-shaped support insulator, same polarity surface charge has the function of uniform electric field.
Summary of the invention
Purpose of the invention is to overcome the shortcomings in the prior art, and the nano coating for providing a kind of flashover of resistance to direct current is exhausted
Edge and preparation method are gathered using the method enforced insulator surface like charges of nano surface coating, are mentioned to reach
The purpose of high insulator edge flashing voltage.
The purpose of the present invention can be achieved through the following technical solutions.
The nano coating insulator of the of the invention flashover of resistance to direct current, including insulator body, the insulator body use by
Rotary table insulator made of epoxy resin and the casting of alumina composite insulating materials；The insulator body surface is coated with nanometer
Coating, the nano coating coating are made of nano paint matrix, curing agent, nanofiller.
The nano paint matrix is bisphenol A epoxide resin, and curing agent is polyamide, and nanofiller is nano-graphite
Alkene, wherein the mass ratio of nano paint matrix and curing agent is 3:1.
The purpose of the present invention can be also achieved through the following technical solutions.
The preparation method of the nano coating insulator of the flashover of resistance to direct current of the invention, comprising the following steps:
Step 1: the preparation of nano paint
The nanofiller of certain mass score is dispersed in by filler matrix and curing agent using the method for mechanical blending
In；The bubble in mixture is removed in vacuum tank；The mixture of bubble heating water bath under the conditions of 50 DEG C will have been removed；Its
In, the nano paint matrix is bisphenol A epoxide resin, and curing agent is polyamide, and nanofiller is nano-graphene,
In, the mass ratio of nano paint matrix and curing agent is 3:1
Step 2: insulator surface coated with nano coating
Rotary table insulator surface is polished with sand paper, the rotary table insulator after polishing is immersed into the nano paint in water-bath
In, it is taken out after 1-5 minutes；Placement is horizontally suspended to remove the extra coating of rotary table insulator surface, rotary table insulate after 24 hours
The nano coating one-step solidification in sublist face is completed；The nano coating insulator of one-step solidification is placed in 80 DEG C of oven and is carried out
Secondary curing.
Compared with prior art, the beneficial effects brought by the technical solution of the present invention are as follows:
(1) more easily accumulation like charges carrys out uniform electric field distribution to nano coating insulator surface of the present invention.
(2) flashover voltage of nano coating insulator of the present invention is apparently higher than common insulator.
(3) present invention is gathered using the method enforced insulator surface like charges of nano surface coating, to reach
Improve the purpose of insulator edge flashing voltage.
Detailed description of the invention
Attached drawing 1 is the rotary table insulator schematic diagram being poured by epoxy resin and alumina composite insulating materials.
Attached drawing 2 is the nano coating surface Charge evanishment schematic diagram of different nanometer contents.
Attached drawing 3 is the flashover voltage Weibull distribution figure of the nano coating insulator of different nanometer contents.
Specific embodiment
The invention will be further described with reference to the accompanying drawing.
It is an object of the invention to design a kind of higher direct current support insulator of flashover voltage, to improve direct current GIL
Functional reliability and further reduce line size.
The nano coating insulator of the flashover of resistance to direct current of the invention, including insulator body, as shown in Figure 1, the insulator
Ontology is using the rotary table insulator as made of epoxy resin and the casting of alumina composite insulating materials.The insulator body surface
Coated with nano coating, the nano coating coating is made of nano paint matrix, curing agent, nanofiller.Wherein, described to receive
Rice coating matrix is bisphenol A epoxide resin, and curing agent is polyamide, and nanofiller is nano-graphene, nano paint base
The mass ratio of body and curing agent is 3:1.
The preparation method of the nano coating insulator of the flashover of resistance to direct current of the invention, comprising the following steps:
Step 1: the preparation of nano paint
Firstly, the nanofiller of certain mass score is dispersed in filler matrix using the method for mechanical blending and is consolidated
In agent, mixture is obtained；Then, the bubble in mixture is removed in vacuum tank；Finally, the mixture that bubble will have been removed
Heating water bath under the conditions of 50 DEG C, it is therefore an objective to reduce nano paint viscosity, do standard for the insulator surface layer coating work of next step
It is standby.Wherein, the nano paint matrix is bisphenol A epoxide resin, and curing agent is polyamide, and nanofiller is nano-graphite
The mass ratio of alkene, nano paint matrix and curing agent is 3:1.
Step 2: insulator surface coated with nano coating
Firstly, rotary table insulator surface is polished with sand paper, it is therefore an objective to the combination on enforced insulator surface and nano paint
Ability；Then, the rotary table insulator after polishing is immersed in the nano paint in water-bath, is taken out after 1-5 minutes；It horizontally suspends and puts
It sets to remove the extra coating of rotary table insulator surface, the nano coating one-step solidification of rotary table insulator surface is complete after about 24 hours
At；Secondary curing is carried out finally, the nano coating insulator of one-step solidification is placed in 80 DEG C of oven, the secondary curing time
Not less than 4 hours.
Surface charge measurement and flashover test:
(1) decaying of the nano coating insulator surface current potential of different nanometer contents at any time is measured using surface potential meter
Characteristic, as a result as shown in Fig. 2.By attached drawing 2 as it can be seen that content is the nano coating insulator surface of 0.05wt% and 0.01wt%
Electric-charge-dissipating is slower, it means that nano coating insulator surface is easier accumulation like charges and carrys out uniform electric field distribution.Its
In, optimal nano-graphene content is 0.01wt%.
(2) sudden strain of a muscle of the nano coating insulator of different nanometer contents is measured using the gradient boost method that rate is 1kV/min
Network voltage, every group of experiment are repeated 10 times, and draw Weibull distribution figure, as shown in Fig. 3.By attached drawing 3 as it can be seen that content is 0.05wt%
Common insulator is apparently higher than with the flashover voltage of graphene nano coating insulation of 0.1wt%；And graphene too high levels
When (0.15wt%), flashover voltage is but decreased obviously.Optimal nano-graphene content is 0.1wt%.
Embodiment:
The optimum implementation for manufacturing the nano coating insulator for the flashover of resistance to direct current is as follows:
(1) optimal nano paint formula (mass ratio) is as follows: bisphenol A epoxide resin: polyamide: nano-graphene
=300:100:0.4.Wherein the size of nano-graphene is 20nm.
(2) mechanical blending prepare nano paint concrete operations it is as follows: firstly, 0.4 part of nano-graphene is added 300 parts
In bisphenol A epoxide resin, mechanical stirring 1 hour, ultrasonic disperse 1 hour.Then 100 parts of polyamides are added, machinery stirs
It mixes 10 minutes.The bubble in nano paint is removed under vacuum conditions, and vacuum degree is -0.1MPa.Finally, nano paint is placed on
Spare in 50 DEG C of water-bath, water bath time must not be less than 10 minutes, must not exceed 30 minutes.
(3) concrete operations of insulator surface layer coating are as follows: firstly, by rotary table insulator surface sand paper uniform grinding.
Then, the rotary table insulator polished is completely immersed in ready nano paint in advance, the time must not be less than 1 minute, no
It obtains more than 5 minutes.Finally, picking up and horizontally suspending rotary table insulator from nano paint, the nanometer for keeping surface layer extra is applied
Material is taken advantage of a situation under the effect of gravity to be dropped down.Room temperature solidifies 24 hours next time, and secondary curing is no less than 4 hours under 80 DEG C of environment.
Although function and the course of work of the invention are described above in conjunction with attached drawing, the invention is not limited to
Above-mentioned concrete function and the course of work, the above mentioned embodiment is only schematical, rather than restrictive, ability
The those of ordinary skill in domain under the inspiration of the present invention, is not departing from present inventive concept and scope of the claimed protection situation
Under, many forms can also be made, all of these belong to the protection of the present invention.
Claims (3)
1. a kind of nano coating insulator of flashover of resistance to direct current, including insulator body, which is characterized in that the insulator body
Using the rotary table insulator as made of epoxy resin and the casting of alumina composite insulating materials；The insulator body surface coating
There is nano coating, the nano coating coating is made of nano paint matrix, curing agent, nanofiller.
2. the nano coating insulator of the flashover of resistance to direct current according to claim 1, which is characterized in that the nano paint base
Body is bisphenol A epoxide resin, and curing agent is polyamide, and nanofiller is nano-graphene, wherein nano paint matrix with
The mass ratio of curing agent is 3:1.
3. a kind of preparation method of the nano coating insulator of flashover of resistance to direct current, which comprises the following steps: first
Step: the preparation of nano paint
The nanofiller of certain mass score is dispersed in filler matrix and curing agent using the method for mechanical blending；?
The bubble in mixture is removed in vacuum tank；The mixture of bubble heating water bath under the conditions of 50 DEG C will have been removed；Wherein, described
Nano paint matrix is bisphenol A epoxide resin, and curing agent is polyamide, and nanofiller is nano-graphene, nano paint
The mass ratio of matrix and curing agent is 3:1；
Step 2: insulator surface coated with nano coating
Rotary table insulator surface is polished with sand paper, the rotary table insulator after polishing is immersed in the nano paint in water-bath, 1-5
It is taken out after minute；It horizontally suspends and places to remove the extra coating of rotary table insulator surface, rotary table insulator surface after 24 hours
Nano coating one-step solidification complete；The nano coating insulator of one-step solidification is placed in 80 DEG C of oven carry out it is secondary solid
Change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811457525.2A CN109575339B (en) | 2018-11-30 | 2018-11-30 | Direct-current flashover resistant nano-coating insulator and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811457525.2A CN109575339B (en) | 2018-11-30 | 2018-11-30 | Direct-current flashover resistant nano-coating insulator and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109575339A true CN109575339A (en) | 2019-04-05 |
| CN109575339B CN109575339B (en) | 2021-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811457525.2A Active CN109575339B (en) | 2018-11-30 | 2018-11-30 | Direct-current flashover resistant nano-coating insulator and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111454641A (en) * | 2020-05-29 | 2020-07-28 | 南京长江涂料有限公司 | Aqueous single-component conductive coating for insulator and preparation method thereof |
| CN116836610A (en) * | 2023-06-30 | 2023-10-03 | 西安交通大学 | Epoxy composite coating material for improving surface flashover voltage and preparation method thereof |
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| CN104403453A (en) * | 2014-11-16 | 2015-03-11 | 重庆大学 | Semiconductor superhydrophobic paint and preparation method thereof |
| CN108320874A (en) * | 2018-03-16 | 2018-07-24 | 天津大学 | The method of inhibition GIS insulator surface charge accumulations based on linear gradient processing |
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| CN1604237A (en) * | 2004-10-22 | 2005-04-06 | 西安交通大学 | vacuum insulator coating capable of increasing flashover voltage and method of preparation thereof |
| CN104403453A (en) * | 2014-11-16 | 2015-03-11 | 重庆大学 | Semiconductor superhydrophobic paint and preparation method thereof |
| CN108447629A (en) * | 2018-02-22 | 2018-08-24 | 江苏神马电力股份有限公司 | Insulator and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111454641A (en) * | 2020-05-29 | 2020-07-28 | 南京长江涂料有限公司 | Aqueous single-component conductive coating for insulator and preparation method thereof |
| CN116836610A (en) * | 2023-06-30 | 2023-10-03 | 西安交通大学 | Epoxy composite coating material for improving surface flashover voltage and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN109575339B (en) | 2021-10-15 |
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