CN111349387A - Wire insulating paint and method for applying live wire insulating paint - Google Patents
Wire insulating paint and method for applying live wire insulating paint Download PDFInfo
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- CN111349387A CN111349387A CN202010175283.9A CN202010175283A CN111349387A CN 111349387 A CN111349387 A CN 111349387A CN 202010175283 A CN202010175283 A CN 202010175283A CN 111349387 A CN111349387 A CN 111349387A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000003973 paint Substances 0.000 title abstract description 32
- 238000000576 coating method Methods 0.000 claims abstract description 76
- 239000011248 coating agent Substances 0.000 claims abstract description 71
- 239000000945 filler Substances 0.000 claims abstract description 27
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 27
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 27
- 239000004945 silicone rubber Substances 0.000 claims abstract description 18
- 239000012948 isocyanate Substances 0.000 claims abstract description 14
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 14
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 14
- 229920005862 polyol Polymers 0.000 claims abstract description 11
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 10
- 229920000570 polyether Polymers 0.000 claims abstract description 10
- 150000003077 polyols Chemical class 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 230000001680 brushing effect Effects 0.000 claims abstract description 7
- 239000003607 modifier Substances 0.000 claims abstract description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract 2
- 238000009413 insulation Methods 0.000 claims description 21
- 238000010276 construction Methods 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 7
- 239000004970 Chain extender Substances 0.000 claims description 5
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 230000002209 hydrophobic effect Effects 0.000 abstract description 2
- 239000000843 powder Substances 0.000 description 23
- 238000012360 testing method Methods 0.000 description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 229920002631 room-temperature vulcanizate silicone Polymers 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000004148 curcumin Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- -1 ether polyol Chemical class 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
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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
-
- 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
-
- 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
- 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
-
- 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
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- 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
-
- 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
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- 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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- 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
- 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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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- 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
-
- 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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- Polymers & Plastics (AREA)
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- Medicinal Chemistry (AREA)
- Materials Engineering (AREA)
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- Manufacturing & Machinery (AREA)
- Organic Insulating Materials (AREA)
- Paints Or Removers (AREA)
Abstract
Description
技术领域technical field
本发明属于电力绝缘材料技术领域，涉及导线绝缘涂料及带电涂覆导线绝缘涂料的方法，尤其涉及架空裸导线的绝缘涂料及带电绝缘化改造方式。The invention belongs to the technical field of electrical insulating materials, relates to a wire insulating paint and a method for applying the wire insulating paint in a live manner, and particularly relates to an insulating paint for an overhead bare wire and a method for transforming the live wire insulation.
背景技术Background technique
架空电力线形式的输电导线是电力传输的主要形式。目前常见的低压架空线路有两种：架空裸导线和架空绝缘导线。其中架空裸导线由于散热能力较强，价格便宜等优点，被广泛应用于野外的配电线路架设，但是该架空导线没有外皮，导线直接裸露在空气中，由于外力作用而引起树枝、高空物件以及其他可能碰触到架空线路的物体靠近甚至接触输电导线，给安全高效供电带来诸多不利的影响。为提高架空输电线路的安全性、可靠性以及稳定性，采取绝缘涂料对裸导线进行绝缘化改造是一种可行的工程技术途径。从经济上和运行上都有重要意义：一是经过绝缘化的架空线路能减少窃电风险，二是从电网安全运行的角度考虑，在一些必要的地段将裸露的导线进行绝缘化处理，既保障了供电的安全性，同时又能减少低压触电事故的发生。但目前应用在电力系统中的线路绝缘涂料施工主要是线路机器人和无人机两个类型。刘文博、李继攀、蒋申晨等人均对线路绝缘涂料喷涂机器人进行了研究，但机器人的机械结构与控制程序复杂、带电作业风险高。而一些文献公开的无人机涂料施工也都仅限于喷涂施工，工艺繁琐。Transmission conductors in the form of overhead power lines are the primary form of power transmission. At present, there are two common low-voltage overhead lines: overhead bare conductors and overhead insulated conductors. Among them, the overhead bare wire is widely used in the erection of distribution lines in the field due to its strong heat dissipation capacity and low price. However, the overhead wire has no outer skin, and the wire is directly exposed in the air. Other objects that may touch the overhead line approach or even touch the transmission conductor, which brings many adverse effects to the safe and efficient power supply. In order to improve the safety, reliability and stability of overhead transmission lines, it is a feasible engineering and technical approach to use insulating coatings to insulate bare conductors. It is of great significance both economically and operationally: firstly, insulated overhead lines can reduce the risk of electricity theft; secondly, from the perspective of safe operation of the power grid, insulate the exposed wires in some necessary areas, not only It ensures the safety of power supply and reduces the occurrence of low-voltage electric shock accidents. However, the construction of line insulation coatings currently used in power systems is mainly two types of line robots and unmanned aerial vehicles. Liu Wenbo, Li Jipan, Jiang Shenchen and others have all conducted research on the line insulation coating spraying robot, but the mechanical structure and control program of the robot are complex, and the risk of live operation is high. However, the construction of UAV coatings disclosed in some documents is limited to spraying construction, and the process is cumbersome.
发明内容SUMMARY OF THE INVENTION
本发明要解决的技术问题是克服现有技术的不足，提供一种固化时间短、成膜性好、涂膜附着力、绝缘性、散热性、耐候性、疏水耐污性同时兼容且优异的导线绝缘涂料，还提供一种方便实用、便利性高的带电涂覆导线绝缘涂料的方法，特别适用于架空裸导线的带电绝缘化改造，尤其是35kV及以下架空裸导线。The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and to provide a product with short curing time, good film-forming properties, coating film adhesion, insulation, heat dissipation, weather resistance, and hydrophobic stain resistance, which are compatible and excellent at the same time. The wire insulating coating also provides a convenient, practical and high-convenience method for applying live wire insulating coating, which is especially suitable for live insulation transformation of overhead bare wires, especially overhead bare wires of 35kV and below.
为解决上述技术问题，本发明采用以下技术方案。In order to solve the above technical problems, the present invention adopts the following technical solutions.
一种导线绝缘涂料，包括A组分和B组分，所述A组分主要由多元醇、丙烯酸酯、异氰酸酯、异氰酸酯预聚物和异氰酸酯改性物中的一种或几种组成，所述B组分主要由聚醚、多孔金属氧化物粉状填料和室温硫化硅橡胶组成，所述A组分与所述B组分分开储存，使用时经混合后得到导线绝缘涂料。A wire insulation coating, comprising A component and B component, the A component is mainly composed of one or more of polyols, acrylates, isocyanates, isocyanate prepolymers and isocyanate modifiers, the The B component is mainly composed of polyether, porous metal oxide powder filler and room temperature vulcanized silicone rubber. The A component is stored separately from the B component, and the wire insulating coating is obtained after mixing in use.
上述的导线绝缘涂料，优选的，0＜所述多孔金属氧化物粉状填料占所述B组分的质量分数≤20％，0＜所述室温硫化硅橡胶占所述B组分的质量分数≤20％。In the above-mentioned wire insulation coating, preferably, 0 < the mass fraction of the porous metal oxide powder filler in the B component ≤ 20%, and 0 < the mass fraction of the RTV silicone rubber in the B component ≤20%.
上述的导线绝缘涂料，优选的，0＜所述多孔金属氧化物粉状填料的颗粒粒径≤100微米。In the above-mentioned wire insulating coating, preferably, 0 < the particle size of the porous metal oxide powder filler≤100 microns.
上述的导线绝缘涂料，优选的，所述室温硫化硅橡胶填充在所述多孔金属氧化物粉状填料的空隙中，所述空隙包括多孔金属氧化物粉状填料的多孔结构和/或所述多孔金属氧化物粉状填料的颗粒间隙。In the above-mentioned wire insulating coating, preferably, the RTV silicone rubber is filled in the voids of the porous metal oxide powder filler, and the voids include the porous structure of the porous metal oxide powder filler and/or the porous metal oxide filler. Interparticle gaps of metal oxide powder fillers.
上述的导线绝缘涂料，优选的，所述B组分还包括扩链剂和/或渗透剂。In the above-mentioned wire insulating coating, preferably, the B component further includes a chain extender and/or a penetrant.
上述的导线绝缘涂料，优选的，所述导线绝缘涂料在使用时，A组分与B组分按照0.5～1.5∶1的质量比进行混合，发生自固化，固化时间小于30分钟。In the above-mentioned wire insulating paint, preferably, when the wire insulating paint is in use, the A component and the B component are mixed in a mass ratio of 0.5-1.5:1, and self-curing occurs, and the curing time is less than 30 minutes.
上述的导线绝缘涂料，优选的，所述导线绝缘涂料为架空裸导线的导线绝缘涂料。更优选的，所述架空裸导线为35kV及以下的架空裸导线。In the above-mentioned wire insulating paint, preferably, the wire insulating paint is a wire insulating paint for overhead bare wires. More preferably, the overhead bare wires are overhead bare wires of 35kV and below.
作为一个总的技术构思，本发明还提供一种带电涂覆导线绝缘涂料的方法，包括以下步骤：采用上述提供的导线绝缘涂料在输电导线上通过刷涂方式进行涂覆施工。As a general technical concept, the present invention also provides a method for applying a wire insulating paint with electricity, comprising the following steps: using the wire insulating paint provided above to carry out coating construction on the transmission wire by brushing.
上述的带电涂覆导线绝缘涂料的方法，优选的，所述导线绝缘涂料的A组分与B组分在刷涂前先按比例混合，然后通过毛刷或反U型导槽均匀涂覆到所述输电导线上。In the above-mentioned method for applying conductive wire insulating paint, preferably, the A component and the B component of the wire insulating paint are mixed in proportion before brushing, and then evenly applied to the wire by brush or reverse U-shaped guide groove. on the power line.
上述的带电涂覆导线绝缘涂料的方法，优选的，所述涂覆施工采用无人机进行实施，所述无人机上搭载有悬停装置和涂覆装置。In the above-mentioned method for applying an insulating coating for conductive wires, preferably, the coating construction is carried out by using an unmanned aerial vehicle, and the unmanned aerial vehicle is equipped with a hovering device and a coating device.
上述的带电涂覆导线绝缘涂料的方法，优选的，所述无人机的最小载重量不小于10公斤，满载续航飞行时间不小于15分钟。In the above-mentioned method for applying conductive wire insulating paint, preferably, the minimum load of the UAV is not less than 10 kilograms, and the full-load endurance flight time is not less than 15 minutes.
本发明中，所述A组分、B组分的制备过程均是将各自的原料成分按比例混合即可，B组分中，多孔金属氧化物粉状填料分散均匀，室温硫化硅橡胶可通过超声混合的方式填充在多孔金属氧化物粉状填料的多孔结构和/或颗粒间隙中。In the present invention, the preparation process of the A component and the B component is to mix the respective raw material components in proportion. In the B component, the porous metal oxide powder filler is uniformly dispersed, and the room temperature vulcanized silicone rubber can pass through The porous metal oxide powder filler is filled in the porous structure and/or particle gap by means of ultrasonic mixing.
本发明中，多元醇、丙烯酸酯、异氰酸酯、异氰酸酯预聚物和异氰酸酯改性物均采用常规可商业购得的材料即可，对不同组分的搭配比例不作要求，均可以与B组分结合制成目标导线绝缘涂料。多元醇可以为聚醚多元醇或其它类型的多元醇。In the present invention, polyols, acrylates, isocyanates, isocyanate prepolymers and isocyanate modified materials can all be conventional commercially available materials, and there is no requirement for the matching ratio of different components, and they can all be combined with component B Make the target wire insulation paint. The polyols may be polyether polyols or other types of polyols.
本发明中，当A组分采用多元醇与异氰酸酯的组合、多元醇与异氰酸酯改性物的组合时，质量比可优选为50∶50。In the present invention, when the A component adopts the combination of polyol and isocyanate, and the combination of polyol and isocyanate modified product, the mass ratio may preferably be 50:50.
本发明中，多孔金属氧化物粉状填料优选多孔Al2O3粉，室温硫化硅橡胶可直接商购。In the present invention, the porous metal oxide powder filler is preferably porous Al 2 O 3 powder, and the room temperature vulcanized silicone rubber can be directly purchased commercially.
本发明中，当B组分采用聚醚、多孔金属氧化物粉状填料和室温硫化硅橡胶的组合时，在满足0＜所述多孔金属氧化物粉状填料占所述B组分的质量分数≤20％、0＜所述室温硫化硅橡胶占所述B组分的质量分数≤20％的条件下，余量为聚醚。当加入扩链剂和/或渗透剂时，对于比例不作要求，可根据实际情况而定，都可以实施。In the present invention, when the B component adopts a combination of polyether, porous metal oxide powder filler and room temperature vulcanized silicone rubber, the mass fraction of the porous metal oxide powder filler in the B component satisfies 0< ≤ 20%, 0 < under the condition that the RTV silicone rubber accounts for ≤ 20% of the mass fraction of the B component, the balance is polyether. When adding a chain extender and/or a penetrant, there is no requirement for the ratio, it can be determined according to the actual situation, and it can be implemented.
与现有技术相比，本发明的优点在于：Compared with the prior art, the advantages of the present invention are:
1、本发明的导线绝缘涂料采用聚醚与多孔金属氧化物粉状填料和室温硫化硅橡胶进行结合组成B组分的主体成分或全部成分，与A组分分开存放，使用时才进行混合固化。成分的选择与协同使得导线绝缘涂料可快速在常温下实现自固化，无需外界热源(如紫外灯照)，固化时间短，成膜性能好，所得涂料可以在保持甚至高于现有技术导线涂料的涂膜附着力、绝缘性能等基本性能的同时，使涂料成膜后的散热性、耐候性能、疏水耐污性能等方面也得到兼容和明显提升。相比于现有导线绝缘涂料(如3M公司526绝缘材料)，本发明开发的导线绝缘涂料可有效兼容多种架空裸导线在室外环境下的高需求功能，综合性能强。1. The wire insulating coating of the present invention is combined with polyether, porous metal oxide powder filler and room temperature vulcanized silicone rubber to form the main component or all components of component B, which are stored separately from component A, and are mixed and cured only when used. . The selection and synergy of the ingredients make the wire insulating coating rapidly self-curing at room temperature without external heat source (such as ultraviolet light), short curing time, and good film-forming performance. At the same time, the coating film adhesion, insulation performance and other basic properties are also compatible and significantly improved in terms of heat dissipation, weather resistance, hydrophobicity and stain resistance after coating film formation. Compared with the existing wire insulating paint (such as 3M company 526 insulating material), the wire insulating paint developed by the present invention can be effectively compatible with the high-demand functions of various overhead bare wires in the outdoor environment, and has strong comprehensive performance.
2、本发明的带电涂覆方法采用刷涂工艺，突破了现有技术采用机器人或无人机施工时仅能使用喷涂方式的局限性，显著提高了带电涂覆施工的便利性，对本领域有重要意义。2. The electrified coating method of the present invention adopts the brushing technique, which breaks through the limitation that only the spraying method can be used in the prior art when a robot or an unmanned aerial vehicle is used for construction, and significantly improves the convenience of electrified coating construction. important meaning.
3、本发明采用无人机涂覆施工具有高效、便捷、不停电、可重复刷涂等特征，避免了常规线路机器人进出等电位的安全风险。3. The invention adopts drone coating construction, which has the characteristics of high efficiency, convenience, no power failure, and repeatable brushing, etc., and avoids the safety risk of the conventional line robot entering and leaving the equipotential.
具体实施方式Detailed ways
以下结合具体优选的实施例对本发明作进一步描述，但并不因此而限制本发明的保护范围。The present invention is further described below with reference to specific preferred embodiments, but the protection scope of the present invention is not limited thereby.
如无特殊说明，以下实施例中所采用的材料和仪器均为市售。Unless otherwise specified, the materials and instruments used in the following examples are commercially available.
实施例1：Example 1:
一种本发明的导线绝缘涂料，具体为双组分快速自固化导线绝缘涂料，包括A组分与B组分，A组分由异氰酸酯MDI 50和聚醚多元醇N220组成，异氰酸酯MDI 50与聚醚多元醇N220的质量比为50∶50，B组分由端氨基聚醚D 2000、扩链剂E100、多孔Al2O3粉和室温硫化硅橡胶组成，端氨基聚醚D 2000、扩链剂E100、多孔Al2O3粉、室温硫化硅橡胶的质量比为60∶25∶10∶5。A wire insulation coating of the present invention, specifically a two-component fast self-curing wire insulation coating, includes A component and B component, A component is composed of isocyanate MDI 50 and polyether polyol N220, isocyanate MDI 50 and poly The mass ratio of ether polyol N220 is 50:50, component B is composed of amino-terminated polyether D 2000, chain extender E100, porous Al 2 O 3 powder and room temperature vulcanized silicone rubber, amino-terminated polyether D 2000, chain extender The mass ratio of agent E100, porous Al 2 O 3 powder, and RTV silicone rubber is 60:25:10:5.
本实施例中，0＜多孔Al2O3粉的颗粒粒径≤100微米，平均粒径为50微米。In this embodiment, 0<the particle size of the porous Al 2 O 3 powder is less than or equal to 100 microns, and the average particle size is 50 microns.
本实施例中，室温硫化硅橡胶填充在多孔金属氧化物粉状填料的空隙中，空隙包括多孔金属氧化物粉状填料的多孔结构和多孔金属氧化物粉状填料的颗粒间隙。In this embodiment, the room temperature vulcanized silicone rubber is filled in the voids of the porous metal oxide powder filler, and the voids include the porous structure of the porous metal oxide powder filler and the particle gaps of the porous metal oxide powder filler.
本实施例中，导线绝缘涂料在使用时，A组分与B组分按照1∶1的质量比混合均匀，发生自固化，固化时间小于30分钟。In this embodiment, when the wire insulating coating is used, the A component and the B component are mixed uniformly according to the mass ratio of 1:1, and self-curing occurs, and the curing time is less than 30 minutes.
本实施例中，导线绝缘涂料为用于架空裸导线的导线绝缘涂料。In this embodiment, the wire insulating paint is a wire insulating paint used for overhead bare wires.
本实施例中，A组分、B组分的制备过程均是将各自的原料成分按比例混合均匀，B组分中，多孔金属氧化物粉状填料分散均匀，室温硫化硅橡胶通过超声混合的方式填充在多孔金属氧化物粉状填料的多孔结构和颗粒间隙中。In this embodiment, the preparation process of component A and component B is to mix the respective raw material components uniformly in proportion. In component B, the porous metal oxide powder filler is uniformly dispersed, and the room temperature vulcanized silicone rubber is mixed by ultrasonic. It is filled in the porous structure and particle gap of the porous metal oxide powder filler.
实施例2：Example 2:
一种本发明的带电涂覆导线绝缘涂料的方法，采用实施例1制备的导线绝缘涂料，施工过程如下：将导线绝缘涂料由无人机运载，在输电导线上通过刷涂方式进行涂覆施工。A method for applying a live wire insulating paint of the present invention, using the wire insulating paint prepared in Example 1, the construction process is as follows: the wire insulating paint is carried by an unmanned aerial vehicle, and the transmission wire is coated and constructed by brushing. .
本实施例中，无人机采用大疆T20，无人机上搭载有自动悬停装置(高精度悬停装置或激光制导装置均可)和涂覆设备，涂覆设备运载有绝缘涂料，绝缘涂料及涂覆设备共20公斤。无人机能够通过已有的导线空间坐标，或者通过自带的激光制导仪，在导线正上方，与导线保持恒定距离进行飞行，也能够为涂覆设备中绝缘涂料的储存罐推力装置与控制装置提供电能，还可以设定导线绝缘涂料带电涂覆施工的起点与终点，并通过设置飞行速度控制涂层厚度。无人机、悬停装置、激光制导装置和涂覆设备(包括设备内的推力装置、控制装置等)均为常规设备，可商购。In this embodiment, the drone adopts DJI T20, and the drone is equipped with an automatic hovering device (either a high-precision hovering device or a laser guidance device) and coating equipment, and the coating equipment carries insulating paint, insulating paint and coating equipment totaling 20 kg. The drone can fly through the existing wire space coordinates, or through the built-in laser guidance instrument, directly above the wire, keeping a constant distance from the wire, and can also be used for the storage tank thrust device and control of the insulating paint in the coating equipment. The device provides electrical energy, and can also set the starting point and end point of the live coating construction of the wire insulation coating, and control the coating thickness by setting the flying speed. UAVs, hovering devices, laser guidance devices and coating equipment (including thrust devices, control devices, etc. in the equipment) are all conventional equipment and are commercially available.
本实施例中，无人机飞至某10kV架空裸导线上方，将本发明的导线绝缘涂料涂覆到带电裸导线上。无人机由悬停装置或制导装置控制，在导线正上方，与导线保持0.5米高度，由涂覆装置推送涂料，以5米/分钟的速度飞行并进行涂覆。In this embodiment, the drone flies over a 10kV overhead bare wire, and the wire insulating coating of the present invention is applied to the charged bare wire. The drone is controlled by a hovering device or a guidance device, just above the wire, keeping a height of 0.5 meters with the wire, and the coating device pushes the paint, flies at a speed of 5 m/min and applies the coating.
本实施例中，在涂覆设备内，A组分与B组分分罐储存，可由推力装置根据配比自动控制A组分与B组分的出料速度，A、B组分被推力装置推出储存罐后，可在一个预混室(如常规螺旋型预混室)内充分混合均匀。A、B组分混合均匀后，由一根管(如聚四氟乙烯管)连接到导线上沿，再由毛刷或反U型导槽均匀涂覆到导线上，并在重力作用下包裹导线下侧。In this embodiment, in the coating equipment, components A and B are stored in separate tanks, and the discharge speed of components A and B can be automatically controlled by the thrust device according to the ratio, and components A and B are controlled by the thrust device. After the storage tank is pushed out, it can be thoroughly mixed in a premixing chamber (such as a conventional spiral premixing chamber). After the components A and B are mixed evenly, a tube (such as a polytetrafluoroethylene tube) is connected to the upper edge of the wire, and then evenly coated on the wire by a brush or reverse U-shaped guide groove, and wrapped under the action of gravity the underside of the wire.
经检测，本发明的导线绝缘涂料成膜性能良好，膜层厚度大于3毫米，体积电阻率为5×1013欧姆·米，导热系数0.1W/mk，漆膜抗张强度10MPa，42D老化试验后抗张强度变化率小于5％，憎水性能HC-2级。After testing, the wire insulating paint of the present invention has good film-forming performance, the film thickness is greater than 3 mm, the volume resistivity is 5 × 10 13 ohm·m, the thermal conductivity is 0.1 W/mk, the tensile strength of the paint film is 10 MPa, and the 42D aging test is carried out. The post-tensile strength change rate is less than 5%, and the hydrophobicity is HC-2 grade.
对比例1Comparative Example 1
一种导线绝缘涂料的制备方法，用于作为实施例1的对照实验，与实施例1的导线绝缘涂料基本相同，区别仅在于：B组分中不添加室温硫化硅橡胶。A preparation method of a wire insulating coating, used as a control experiment in Example 1, is basically the same as the wire insulating coating in Example 1, with the only difference that no room temperature vulcanized silicone rubber is added to the B component.
经检测，该导线绝缘涂料成膜后，体积电阻率为1×1013欧姆·米，导热系数0.1W/mk，漆膜抗张强度5MPa，42D老化试验后抗张强度变化率小于15％，憎水性能HC-4级。After testing, the wire insulating coating has a volume resistivity of 1 × 10 13 ohm m, a thermal conductivity of 0.1 W/mk, a tensile strength of 5 MPa, and a change rate of tensile strength of less than 15% after 42D aging test. Hydrophobicity HC-4 grade.
对比例2Comparative Example 2
一种导线绝缘涂料的制备方法，用于作为实施例1的对照实验，与实施例1的导线绝缘涂料基本相同，区别仅在于：B组分中不添加多孔金属氧化物粉状填料。A preparation method of a wire insulating coating, used as a control experiment in Example 1, is basically the same as the wire insulating coating in Example 1, except that no porous metal oxide powder filler is added to the B component.
经检测，该导线绝缘涂料成膜后，体积电阻率为5×1013欧姆·米，导热系数0.02W/mk，漆膜抗张强度8MPa，42D老化试验后抗张强度变化率小于8％，憎水性能HC-3级。After testing, the wire insulation coating has a volume resistivity of 5×10 13 ohm·m, a thermal conductivity of 0.02W/mk, a tensile strength of the paint film of 8MPa, and a tensile strength change rate of less than 8% after the 42D aging test. Hydrophobicity HC-3 grade.
本发明的技术方案不仅比现有技术综合性能强，兼容性好，由以上设计的对照实验与实施例的比较也可知，本发明的技术方案比单独添加多孔金属氧化物粉状填料或室温硫化硅橡胶时的综合性能有明显提升，体现出了明显的协同增效作用。The technical solution of the present invention not only has stronger comprehensive performance and better compatibility than the prior art, but also can be seen from the comparison of the above designed control experiment and the embodiment, the technical solution of the present invention is better than adding porous metal oxide powder filler or room temperature vulcanization alone. The comprehensive performance of silicone rubber has been significantly improved, reflecting the obvious synergistic effect.
以上所述，仅是本发明的较佳实施例而已，并非对本发明作任何形式上的限制。虽然本发明已以较佳实施例揭示如上，然而并非用以限定本发明。任何熟悉本领域的技术人员，在不脱离本发明的精神实质和技术方案的情况下，都可利用上述揭示的方法和技术内容对本发明技术方案做出许多可能的变动和修饰，或修改为等同变化的等效实施例。因此，凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所做的任何简单修改、等同替换、等效变化及修饰，均仍属于本发明技术方案保护的范围内。The above descriptions are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art, without departing from the spirit and technical solutions of the present invention, can make many possible changes and modifications to the technical solutions of the present invention by using the methods and technical contents disclosed above, or modify them to be equivalent. Variant equivalent embodiments. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the protection scope of the technical solution of the present invention.
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