CN111349387B - Wire insulating paint and method for electrically coating wire insulating paint - Google Patents
Wire insulating paint and method for electrically coating wire insulating paint Download PDFInfo
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- CN111349387B CN111349387B CN202010175283.9A CN202010175283A CN111349387B CN 111349387 B CN111349387 B CN 111349387B CN 202010175283 A CN202010175283 A CN 202010175283A CN 111349387 B CN111349387 B CN 111349387B
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- 238000000576 coating method Methods 0.000 title claims abstract description 102
- 239000011248 coating agent Substances 0.000 title claims abstract description 99
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000003973 paint Substances 0.000 title abstract description 16
- 239000000945 filler Substances 0.000 claims abstract description 28
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 28
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 28
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 18
- 239000004945 silicone rubber Substances 0.000 claims abstract description 18
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 11
- 239000012948 isocyanate Substances 0.000 claims abstract description 11
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 11
- 229920000570 polyether Polymers 0.000 claims abstract description 11
- 229920005862 polyol Polymers 0.000 claims abstract description 11
- 150000003077 polyols Chemical class 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 230000001680 brushing effect Effects 0.000 claims abstract description 5
- 239000003607 modifier Substances 0.000 claims abstract description 4
- 239000004020 conductor Substances 0.000 claims description 23
- 238000010276 construction Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 8
- 239000004970 Chain extender Substances 0.000 claims description 5
- 230000002209 hydrophobic effect Effects 0.000 abstract description 6
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 7
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- 238000012986 modification Methods 0.000 description 5
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 229910052593 corundum Inorganic materials 0.000 description 4
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- 230000000149 penetrating effect Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
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- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3225—Polyamines
- C08G18/3237—Polyamines aromatic
- C08G18/324—Polyamines aromatic containing only one aromatic ring
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
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- C08G18/50—Polyethers having heteroatoms other than oxygen
- C08G18/5021—Polyethers having heteroatoms other than oxygen having nitrogen
- C08G18/5024—Polyethers having heteroatoms other than oxygen having nitrogen containing primary and/or secondary amino groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
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- C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
- C08G18/6685—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3225 or polyamines of C08G18/38
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
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- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
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- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
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- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/065—Insulating conductors with lacquers or enamels
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/16—Insulating conductors or cables by passing through or dipping in a liquid bath; by spraying
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- Materials Engineering (AREA)
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- Manufacturing & Machinery (AREA)
- Organic Insulating Materials (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a wire insulating coating and a method for electrically coating the wire insulating coating, wherein the wire insulating coating comprises a component A and a component B, the component A mainly comprises one or more of polyol, acrylate, isocyanate prepolymer and isocyanate modifier, the component B mainly comprises polyether, porous metal oxide powdery filler and room temperature vulcanized silicone rubber, and the component A and the component B are stored separately and are mixed to obtain the wire insulating coating when in use. The method for electrically coating the wire insulating paint comprises the step of coating the transmission wire with the wire insulating paint by brushing. The wire insulating coating disclosed by the invention is short in curing time, good in film forming property, compatible and excellent in film adhesion, insulativity, heat dissipation, weather resistance and hydrophobic stain resistance, and the coating method is convenient and practical and high in convenience.
Description
Technical Field
The invention belongs to the technical field of electric insulating materials, relates to a wire insulating coating and a method for coating the wire insulating coating in a charged manner, and particularly relates to an insulating coating of an overhead bare wire and a charged insulation transformation mode.
Background
Power conductors in the form of overhead power lines are the main form of power transmission. There are two types of low voltage overhead lines that are common today: an overhead bare conductor and an overhead insulated conductor. The overhead bare conductor is widely applied to field distribution line erection due to the advantages of strong heat dissipation capability, low price and the like, but the overhead bare conductor has no sheath, the conductor is directly exposed in the air, branches, high-altitude objects and other objects which may touch the overhead line are close to or even contact with a transmission conductor due to the action of external force, and a great deal of adverse effects are brought to safe and efficient power supply. In order to improve the safety, reliability and stability of the overhead transmission line, insulating modification of bare conductors by adopting insulating coatings is a feasible engineering technical approach. Has important significance from the aspects of economy and operation: firstly, through the overhead line of insulating can reduce the electric risk of stealing, secondly consider from the angle of electric wire netting safe operation, carry out insulation processing with naked wire in some necessary districts, both ensured the security of power supply, can reduce the emergence of low pressure electric shock accident simultaneously again. But the line insulation coating construction applied in the power system at present mainly is two types of line robot and unmanned aerial vehicle. Liuwenbo, Lijunzhang, Jiangshen and the like all research the line insulating coating spraying robot, but the robot is complex in mechanical structure and control program and high in live-line work risk. And the coating construction of the unmanned aerial vehicle disclosed by some documents is only limited to spraying construction, and the process is complicated.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a wire insulating coating which is short in curing time, good in film forming property, compatible and excellent in coating film adhesion, insulativity, heat dissipation, weather resistance and hydrophobic stain resistance, and also provides a convenient, practical and high-convenience method for coating the wire insulating coating in a live manner, and is particularly suitable for live insulation transformation of an overhead bare wire, especially an overhead bare wire of 35kV or below.
In order to solve the technical problems, the invention adopts the following technical scheme.
A wire insulating coating comprises a component A and a component B, wherein the component A mainly comprises one or more of polyol, acrylate, isocyanate prepolymer and isocyanate modifier, the component B mainly comprises polyether, porous metal oxide powdery filler and room temperature vulcanized silicone rubber, and the component A and the component B are stored separately and are mixed to obtain the wire insulating coating when in use.
Preferably, the porous metal oxide powdery filler accounts for less than or equal to 20% of the component B by mass when the mass fraction is more than 0, and the room-temperature vulcanized silicone rubber accounts for less than or equal to 20% of the component B by mass when the mass fraction is more than 0.
Preferably, the particle diameter of the porous metal oxide powdery filler is more than 0 and less than or equal to 100 microns.
In the above wire insulating coating material, preferably, the room temperature vulcanizing silicone rubber is filled in the voids of the porous metal oxide powdery filler, and the voids include the porous structure of the porous metal oxide powdery filler and/or the particle gaps of the porous metal oxide powdery filler.
In the wire insulating coating, the component B preferably further comprises a chain extender and/or a penetrating agent.
Preferably, when the wire insulating coating is used, the component A and the component B are mixed according to the mass ratio of 0.5-1.5: 1 to perform self-curing, and the curing time is less than 30 minutes.
Preferably, the conductor insulating coating is a conductor insulating coating of an overhead bare conductor. More preferably, the bare overhead conductor is 35kV or less.
As a general technical concept, the present invention also provides a method of electrically coating a wire insulating paint, comprising the steps of: the wire insulation coating provided by the method is used for coating construction on a transmission wire in a brush coating mode.
In the above method for electrically coating the wire insulating coating, preferably, the component a and the component B of the wire insulating coating are mixed in proportion before being brushed, and then are uniformly coated on the power transmission wire through a brush or an inverted U-shaped guide groove.
In the method for electrically coating the wire insulating coating, preferably, the coating is performed by using an unmanned aerial vehicle, and the unmanned aerial vehicle is provided with a hovering device and a coating device.
In the method for electrically coating the wire insulating paint, the minimum load capacity of the unmanned aerial vehicle is preferably not less than 10 kilograms, and the full-load endurance flight time is preferably not less than 15 minutes.
In the component B, the porous metal oxide powdery filler is uniformly dispersed, and the room-temperature vulcanized silicone rubber can be filled in the porous structure and/or particle gaps of the porous metal oxide powdery filler in an ultrasonic mixing mode.
In the invention, the polyol, the acrylate, the isocyanate prepolymer and the isocyanate modifier are all prepared from conventional commercially available materials, and the matching proportion of different components is not required, so that the target wire insulating coating can be prepared by combining the components with the component B. The polyol may be a polyether polyol or other type of polyol.
In the present invention, when the a component employs a combination of a polyol and an isocyanate, or a combination of a polyol and an isocyanate-modified substance, the mass ratio may preferably be 50: 50.
In the present invention, the porous metal oxide powdery filler is preferably porous Al2O3Powder, room temperature vulcanized silicone rubber is directly commercially available.
In the invention, when the component B adopts the combination of polyether, porous metal oxide powdery filler and room temperature vulcanized silicone rubber, the balance of polyether is under the condition that the mass fraction of the porous metal oxide powdery filler in the component B is more than 0 and less than or equal to 20 percent, and the mass fraction of the room temperature vulcanized silicone rubber in the component B is more than 0 and less than or equal to 20 percent. When the chain extender and/or the penetrant are/is added, the proportion is not required, and the proportion can be determined according to actual conditions and can be implemented.
Compared with the prior art, the invention has the advantages that:
1. the wire insulating paint of the invention combines polyether, porous metal oxide powder filler and room temperature vulcanized silicone rubber to form the main component or all the components of the component B, and the main component or all the components are stored separately from the component A and are mixed and cured when in use. The selection and the cooperation of the components enable the wire insulating coating to be rapidly self-cured at normal temperature, no external heat source (such as ultraviolet lamp illumination) is needed, the curing time is short, the film forming performance is good, and the obtained coating can keep basic performances even higher than those of the wire coating in the prior art, such as coating adhesion, insulating performance and the like, and simultaneously enables the aspects of heat dissipation, weather resistance, hydrophobic stain resistance and the like after the coating is formed into a film to be compatible and obviously improved. Compared with the existing conductor insulating coating (such as 526 insulating material of 3M company), the conductor insulating coating developed by the invention can be effectively compatible with high-demand functions of various overhead bare conductors in outdoor environment, and has strong comprehensive performance.
2. The electrified coating method disclosed by the invention adopts a brushing process, breaks through the limitation that only a spraying mode can be used when a robot or an unmanned aerial vehicle is adopted for construction in the prior art, obviously improves the convenience of electrified coating construction, and has important significance to the field.
3. The unmanned aerial vehicle coating construction method has the characteristics of high efficiency, convenience, no power outage, repeated brushing and the like, and avoids the safety risk of the conventional line robot entering and exiting equipotential.
Detailed Description
The invention is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the invention.
The materials and instruments used in the following examples are commercially available unless otherwise specified.
Example 1:
the invention relates to a wire insulating coating, in particular to a two-component quick self-curing wire insulating coating, which comprises a component A and a component B, wherein the component A consists of isocyanate MDI 50 and polyether polyol N220, the mass ratio of the isocyanate MDI 50 to the polyether polyol N220 is 50: 50, and the component B consists of amino-terminated polyether D2000, a chain extender E100 and porous Al2O3Powder and room temperature vulcanized silicone rubber, amino-terminated polyether D2000, chain extender E100 and porous Al2O3The mass ratio of the powder to the room temperature vulcanized silicone rubber is 60: 25: 10: 5.
In this example, 0 < porous Al2O3The particle size of the powder is less than or equal to 100 microns, and the average particle size is 50 microns.
In this embodiment, the room temperature vulcanized silicone rubber is filled in the voids of the porous metal oxide powdery filler, and the voids include the porous structure of the porous metal oxide powdery filler and the gaps between the particles of the porous metal oxide powdery filler.
In the embodiment, when the wire insulating coating is used, the component A and the component B are uniformly mixed according to the mass ratio of 1: 1, self-curing is carried out, and the curing time is less than 30 minutes.
In this embodiment, the conductor insulating coating is a conductor insulating coating for an overhead bare conductor.
In the embodiment, the preparation processes of the component A and the component B are respectively and uniformly mixed according to the proportion, in the component B, the porous metal oxide powdery filler is uniformly dispersed, and the room-temperature vulcanized silicone rubber is filled in the porous structure and the particle gaps of the porous metal oxide powdery filler in an ultrasonic mixing mode.
Example 2:
the method for electrically coating the wire insulating paint adopts the wire insulating paint prepared in the embodiment 1, and comprises the following construction processes: and carrying the wire insulating coating by an unmanned aerial vehicle, and coating the transmission wire by a brushing mode.
In this embodiment, the unmanned aerial vehicle adopts the Xinjiang T20, and the unmanned aerial vehicle is equipped with automatic hovering device (high accuracy hovering device or laser guidance device all can) and coating equipment, and coating equipment transports insulating paint, insulating paint and coating equipment total 20 kilograms. Unmanned aerial vehicle can be through existing wire space coordinate, perhaps through the laser guidance appearance from the area, directly over the wire, fly with the wire and keep invariable distance, also can provide the electric energy for insulating coating's in the coating equipment holding vessel thrust unit and controlling means, can also set for the electrified starting point and the terminal point of coating the construction of wire insulating coating to through setting up flying speed control coating thickness. Unmanned aerial vehicles, hovering devices, laser guidance devices and coating equipment (including thrust devices, control devices and the like in the equipment) are conventional equipment and are commercially available.
In the embodiment, the unmanned aerial vehicle flies above a certain 10kV overhead bare conductor, and the conductor insulating coating is coated on the live bare conductor. The unmanned aerial vehicle is controlled by hovering device or guiding device, directly over the wire, keeps 0.5 meter height with the wire, is pushed coating by the coating device, flies at the speed of 5 meters/minute and coats.
In the embodiment, in the coating equipment, the component A and the component B are stored in the component tanks, the discharging speeds of the component A and the component B can be automatically controlled by the thrust device according to the mixture ratio, and after the component A, B is pushed out of the storage tanks by the thrust device, the components can be fully and uniformly mixed in a premixing chamber (such as a conventional spiral premixing chamber). A. After the component B is uniformly mixed, a pipe (such as a polytetrafluoroethylene pipe) is connected to the upper edge of the wire, and then the brush or the inverse U-shaped guide groove is uniformly coated on the wire, and the lower side of the wire is wrapped under the action of gravity.
The detection shows that the wire insulating coating has good film forming performance, the thickness of a film layer is more than 3 mm, and the volume resistivity is 5 multiplied by 1013Ohm meter, heat conductivity coefficient 0.1W/mk, tensile strength of paint film 10MPa, tensile strength change rate less than 5% after 42D aging test, and hydrophobic property HC-2 level.
Comparative example 1
A method of preparing a wire insulating coating material, which was used in a control experiment as in example 1, was substantially the same as the wire insulating coating material of example 1 except that: and room temperature vulcanized silicone rubber is not added in the component B.
After the detection, the volume resistivity of the wire insulating coating is 1 multiplied by 10 after the film is formed13Ohm meter, heat conductivity coefficient 0.1W/mk, tensile strength of paint film 5MPa, tensile strength change rate after 42D aging test less than 15%, and hydrophobic property HC-4 grade.
Comparative example 2
A method of preparing a wire insulating coating material, which was used in a control experiment as in example 1, was substantially the same as the wire insulating coating material of example 1 except that: the component B is not added with porous metal oxide powdery filler.
After the detection, the volume resistivity of the wire insulating coating is 5 multiplied by 10 after the film is formed13Ohm meter, heat conductivity coefficient 0.02W/mk, tensile strength of paint film 8MPa, tensile strength change rate after 42D aging test less than 8%, and hydrophobic property HC-3 grade.
Compared with the prior art, the technical scheme of the invention has the advantages of strong comprehensive performance and good compatibility, and the comparison of the designed comparison experiment and the embodiment also shows that the comprehensive performance of the technical scheme of the invention is obviously improved compared with that of the case of singly adding the porous metal oxide powdery filler or the room temperature vulcanized silicone rubber, and the obvious synergistic effect is reflected.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or equivalent modifications, without departing from the spirit and scope of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention.
Claims (8)
1. The wire insulating coating is characterized by comprising a component A and a component B, wherein the component A mainly comprises one or more of polyol, isocyanate prepolymer and isocyanate modifier, the component B mainly comprises polyether, porous metal oxide powdery filler and room temperature vulcanized silicone rubber, and the component A and the component B are stored separately and are mixed to obtain the wire insulating coating when in use;
the room temperature vulcanized silicone rubber is filled in the gaps of the porous metal oxide powdery filler, and the gaps comprise the porous structure of the porous metal oxide powdery filler and the particle gaps of the porous metal oxide powdery filler;
the porous metal oxide powdery filler accounts for less than or equal to 20 percent of the mass fraction of the component B when the porous metal oxide powdery filler accounts for more than 0, and the room-temperature vulcanized silicone rubber accounts for less than or equal to 20 percent of the mass fraction of the component B when the porous metal oxide powdery filler accounts for more than 0;
the particle size of the porous metal oxide powdery filler is more than 0 and less than or equal to 100 microns;
when the wire insulating coating is used, the component A and the component B are mixed according to the mass ratio of 0.5-1.5: 1.
2. The wire insulating coating of claim 1, wherein the B component further comprises a chain extender and/or a penetrant.
3. The wire insulation coating of claim 1, wherein the wire insulation coating self-cures during use, and wherein the cure time is less than 30 minutes.
4. The wire insulating coating of claim 1, wherein the wire insulating coating is a wire insulating coating of an aerial bare wire.
5. A method for coating a wire insulating coating in a charged manner, comprising the steps of: coating construction is carried out on a power transmission conductor by brushing with the conductor insulating coating according to any one of claims 1 to 4.
6. The method of electrically coating a wire insulating coating according to claim 5, wherein the A-component and the B-component of the wire insulating coating are mixed in proportion before being brushed and then uniformly applied to the conductive wire through a brush or an inverted U-shaped guide groove.
7. The method for electrically coating the wire insulation coating according to claim 5 or 6, wherein the coating operation is performed by using an unmanned aerial vehicle, and the unmanned aerial vehicle is provided with a hovering device and a coating device.
8. The method of electrically applying a wire insulating coating according to claim 7, wherein the unmanned aerial vehicle has a minimum payload capacity of not less than 10 kg and a full load endurance flight time of not less than 15 minutes.
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| CN114597827A (en) * | 2020-12-03 | 2022-06-07 | 国网辽宁省电力有限公司锦州供电公司 | Bare conductor electrified rapid insulation spraying method |
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