WO2017071082A1 - 一种修复液体硅橡胶护套伞裙表面电蚀损坑洞的方法 - Google Patents
一种修复液体硅橡胶护套伞裙表面电蚀损坑洞的方法 Download PDFInfo
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- WO2017071082A1 WO2017071082A1 PCT/CN2015/099508 CN2015099508W WO2017071082A1 WO 2017071082 A1 WO2017071082 A1 WO 2017071082A1 CN 2015099508 W CN2015099508 W CN 2015099508W WO 2017071082 A1 WO2017071082 A1 WO 2017071082A1
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- WIPO (PCT)
- Prior art keywords
- coating
- pit
- layer
- rtv
- shed
- Prior art date
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Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/693—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/20—Layered products comprising a layer of natural or synthetic rubber comprising silicone rubber
-
- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
- D06M23/16—Processes for the non-uniform application of treating agents, e.g. one-sided treatment; Differential treatment
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/128—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with silicon polymers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1671—Resistance to bacteria, mildew, mould, fungi
Definitions
- the invention relates to a method for repairing an electric corrosion pit on a surface of a liquid silicone rubber sheathed skirt.
- Silicone rubber composite insulation materials are widely used in power grids due to their excellent weather resistance, tracking resistance and electrical erosion resistance and good electrical insulation properties.
- silicone rubber insulation materials used in power grids at home and abroad: high temperature vulcanized silicone rubber (HTV), room temperature vulcanized silicone rubber (RTV), liquid silicone rubber (LSR, also called medium temperature vulcanized silicone rubber).
- the liquid silicone rubber has the advantages of good fluidity, heat resistance, cold resistance and arc resistance, as well as good fluidity, low viscosity, simple process and rapid molding. Therefore, liquid silicone rubber is widely used in outer insulation sheaths.
- the transformer LSR shed skirt is prone to obvious and serious aging.
- some of the conductive dirt adheres to the surface of the liquid silicone rubber, causing local electric field distortion, sparking discharge or arc ablation on the surface of the shed, resulting in electric erosion pits. The occurrence of electric erosion pits seriously affects the safe operation of electrical equipment, and its operational reliability is questioned.
- the repair of the etch pit is to repair the physical and electrical properties of the surface of the liquid silicone rubber shed after the electrical erosion. It belongs to the repair of accidental damage to liquid silicone rubber material, which is different from the secondary overcoating after the aging of the material.
- a primary object of the present invention is to provide a method for repairing an electrolytically etched pit on a surface of a liquid silicone rubber sheathed skirt, such that the appearance and performance of the liquid silicone rubber shed skirt in which electrical erosion occurs is restored.
- the present invention adopts the following technical solutions:
- a method for repairing an electric corrosion pit on a surface of a liquid silicone rubber sheathed skirt comprises the following steps:
- RTV anti-fouling flash coating is used as the first coating layer, coated on the surface of the electric corrosion pit to smooth the surface of the pit;
- the one-component RTV repair glue is used as a second layer coating to fill the electric corrosion pit, fill the electric corrosion pit and tightly bond with the first layer coating;
- a RTV antifouling coating was applied as a third coating on the second coating.
- the RTV antifouling coating used as the first layer coating and/or the second layer coating meets the standard DL/T 627-2012.
- the one-component RTV repair adhesive has the following properties:
- the electrically etched pits are ground and cleaned prior to application of the first layer of coating.
- the sanding includes sanding around the electrically etched pit, smoothing the interface around the electrically etched pit.
- the process of filling the electrically etched pit with the one-component RTV repair glue includes: uniformly applying the repair glue until the surface of the second coating is flat and flush with the surface of the shed.
- the method of the invention can effectively repair the potholes generated after the electric erosion of the surface of the umbrella skirt made of liquid silicone rubber, and the method considers the damage of the surface of the electric corrosion pit, suppresses the repair of the interface bubbles and fills the surface of the rear skirt.
- the physical properties, electrical properties and other factors are particularly suitable for repairing shallow electrical erosion pits, which have high quality and high reliability.
- the liquid silicone rubber sheathed umbrella skirt repaired by the method has the water repellency, the tracking resistance and the electric corrosion resistance performance before the occurrence of the electric erosion.
- Figure 1 is a flow chart of a specific embodiment of the present invention.
- Figure 2 is a diagram showing the effect of shallow electric erosion pits before repair
- FIG. 3 is a view showing an effect of filling a repair adhesive by a repair method according to an embodiment of the present invention
- FIG. 4 is a diagram showing the effect of repairing a repair method in accordance with an embodiment of the present invention.
- the shallow electrical erosion of the surface of the umbrella skirt made of liquid silicone rubber generally has the following characteristics: (1) the depth is within 5 mm; (2) the surface is rough and has obvious ablation marks; (3) It is easy to adhere to dirt and cause further ablation.
- the repair method of the present invention includes the following steps:
- the technical performance of the repairing glue is as shown in Table 1.
- the one-component RTV repair adhesive is used as the second coating to fill the electric corrosion pit.
- the single-component RTV repair adhesive has good bonding performance and high solid content, and does not cause depression or bulging after filling. And can be closely bonded to the RTV of the upper layer.
- the shallow electrical erosion is only a pitted hole in the silicone rubber shed, and there is no hole in the shed, which can be repaired with a single component RTV repair glue.
- the repairing glue specially used for repairing in RTV is moderate in flowability, high in viscosity and high in solid content, and is suitable for repairing defects of silicone rubber.
- the technical properties of the repair glue are shown in Table 1:
- the RTV anti-fouling flash coating that meets the standard DL/T 627-2012 is used as the third layer coating to enhance the surface water repellency and improve the tracking resistance and electrical erosion resistance.
- the hydrophobic performance reaches HC1 level, and the tracking resistance and electric erosion resistance can reach TMA3.5.
- the repair options for silicone rubber are carried out in the absence of sand, rain, and snow, and will not be repaired if environmental factors do not allow it.
- the surface of the damaged pit is rough and uneven, and there are many signs of erosion and dust.
- the grinding machine is used to polish the surrounding of the hole to make the interface around the hole smooth.
- RTV anti-fouling flash coatings should meet the standard DL/T 627-2012.
- the 24h repair adhesive After the 24h repair adhesive is cured, check the repaired part. If there is no air bubble in the repair interface and the part of the umbrella skirt is hand-held, the interface is firmly bonded and there is no cracking. Then the second layer of RTV anti-smudge flash coating is applied.
- the RTV anti-fouling coating should meet the standard DL/T 627-2012. . If the interface is not firmly bonded, scrape the repair glue with a blade and return to step (1) to start repairing again.
- the umbrella skirt is hand-held, and no cracks appear on the surface.
- the two layers of paint are closely bonded, and there is no coating peeling off, and the acceptance is passed. If the acceptance does not pass, scrape the RTV and repair glue with a blade and return to step (1) to restart the repair.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Description
Claims (15)
- 一种修复液体硅橡胶护套伞裙表面电蚀损坑洞的方法,其特征在于,包括以下步骤:用RTV防污闪涂料作为第一层涂层,涂覆在电蚀损坑洞表面,使坑洞表面平滑;用单组份RTV修补胶作为第二层涂层对电蚀损坑洞进行填补,填平电蚀损坑洞,并与所述第一层涂层紧密粘接;用RTV防污闪涂料作为第三层涂层,涂覆在所述第二层涂层上。
- 如权利要求1所述的方法,其特征在于,用作所述第一层涂层和/或所述第二层涂层的RTV防污闪涂料满足标准DL/T 627-2012。
- 如权利要求1所述的方法,其特征在于,所述单组份RTV修补胶具有如下性能:拉伸强度(MPa)≥2.0相对伸长率(%)≥200硬度(HA)≥20电气强度(MV/m)≥17。
- 如权利要求1所述的方法,其特征在于,在涂覆所述第一层涂层之前,对电蚀损坑洞进行打磨和清洗。
- 如权利要求2所述的方法,其特征在于,在涂覆所述第一层涂层之前,对电蚀损坑洞进行打磨和清洗。
- 如权利要求3所述的方法,其特征在于,在涂覆所述第一层涂层之前,对电蚀损坑洞进行打磨和清洗。
- 如权利要求4所述的方法,其特征在于,所述打磨包括对电蚀损坑洞周围进行打磨,使电蚀损坑洞周围的界面平滑。
- 如权利要求5所述的方法,其特征在于,所述打磨包括对电蚀损坑洞周围进行打磨,使电蚀损坑洞周围的界面平滑。
- 如权利要求6所述的方法,其特征在于,所述打磨包括对电蚀损坑洞周围进行打磨,使电蚀损坑洞周围的界面平滑。
- 如权利要求1所述的方法,其特征在于,用单组份RTV修补胶对电蚀损坑洞进行填补的过程包括:将修补胶均匀涂抹直至第二层涂层表面平整,并与伞裙表面平齐。
- 如权利要求2所述的方法,其特征在于,用单组份RTV修补胶对电蚀损坑洞进行填补的过程包括:将修补胶均匀涂抹直至第二层涂层表面平整,并与伞裙表面平齐。
- 如权利要求3所述的方法,其特征在于,用单组份RTV修补胶对电蚀损坑洞进行填补的过程包括:将修补胶均匀涂抹直至第二层涂层表面平整,并与伞裙表面平齐。
- 如权利要求4所述的方法,其特征在于,用单组份RTV修补胶对电蚀损坑洞进行填补的过程包括:将修补胶均匀涂抹直至第二层涂层表面平整,并与伞裙表面平齐。
- 如权利要求5所述的方法,其特征在于,用单组份RTV修补胶对电蚀损坑洞进行填补的过程包括:将修补胶均匀涂抹直至第二层涂层表面平整,并与伞裙表面平齐。
- 如权利要求6所述的方法,其特征在于,用单组份RTV修补胶对电蚀损坑洞进行填补的过程包括:将修补胶均匀涂抹直至第二层涂层表面平整,并与伞裙表面平齐。
Priority Applications (1)
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US15/388,713 US20170117067A1 (en) | 2015-10-27 | 2016-12-22 | Method for repairing electrically erosive pot hole on surface of liquid silicone rubber shed |
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CN201510705359.3 | 2015-10-27 | ||
CN201510705359.3A CN105237789B (zh) | 2015-10-27 | 2015-10-27 | 一种修复液体硅橡胶护套伞裙表面电蚀损坑洞的方法 |
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US15/388,713 Continuation US20170117067A1 (en) | 2015-10-27 | 2016-12-22 | Method for repairing electrically erosive pot hole on surface of liquid silicone rubber shed |
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Cited By (1)
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CN113571269A (zh) * | 2021-08-11 | 2021-10-29 | 国网陕西省电力公司电力科学研究院 | 用于恒定电痕化电压法试验的复合绝缘子伞裙试样及其制样方法 |
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CN107377332A (zh) * | 2017-08-17 | 2017-11-24 | 上海南大集团有限公司 | 一种电缆喷涂修补方法,电缆修补结构以及电缆喷涂修补装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2012038736A (ja) * | 2011-09-27 | 2012-02-23 | Asahi Electric Works Ltd | 絶縁カバーおよびその取り付け構造 |
CN103265883A (zh) * | 2013-05-15 | 2013-08-28 | 广东电网公司东莞供电局 | 硅橡胶互感器的修复涂层及方法 |
CN103545750A (zh) * | 2013-09-26 | 2014-01-29 | 国家电网公司 | 一种对复合绝缘子测试取样部分进行修复的方法 |
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CN103219111A (zh) * | 2013-03-27 | 2013-07-24 | 河北硅谷化工有限公司 | 一种硅橡胶套管老化的修复方法 |
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2015
- 2015-10-27 CN CN201510705359.3A patent/CN105237789B/zh not_active Expired - Fee Related
- 2015-12-29 WO PCT/CN2015/099508 patent/WO2017071082A1/zh active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012038736A (ja) * | 2011-09-27 | 2012-02-23 | Asahi Electric Works Ltd | 絶縁カバーおよびその取り付け構造 |
CN103265883A (zh) * | 2013-05-15 | 2013-08-28 | 广东电网公司东莞供电局 | 硅橡胶互感器的修复涂层及方法 |
CN103545750A (zh) * | 2013-09-26 | 2014-01-29 | 国家电网公司 | 一种对复合绝缘子测试取样部分进行修复的方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113571269A (zh) * | 2021-08-11 | 2021-10-29 | 国网陕西省电力公司电力科学研究院 | 用于恒定电痕化电压法试验的复合绝缘子伞裙试样及其制样方法 |
CN113571269B (zh) * | 2021-08-11 | 2022-09-27 | 国网陕西省电力公司电力科学研究院 | 用于恒定电痕化电压法试验的复合绝缘子伞裙试样及其制样方法 |
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CN105237789A (zh) | 2016-01-13 |
CN105237789B (zh) | 2019-01-29 |
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