CN109651639B - Method for preparing super-hydrophobic surface on surface of silicon rubber - Google Patents
Method for preparing super-hydrophobic surface on surface of silicon rubber Download PDFInfo
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- CN109651639B CN109651639B CN201811556631.6A CN201811556631A CN109651639B CN 109651639 B CN109651639 B CN 109651639B CN 201811556631 A CN201811556631 A CN 201811556631A CN 109651639 B CN109651639 B CN 109651639B
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- silicon rubber
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- stearic acid
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- zinc oxide
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- 229920002379 silicone rubber Polymers 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000003075 superhydrophobic effect Effects 0.000 title claims abstract description 20
- 238000005303 weighing Methods 0.000 claims abstract description 37
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 32
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 32
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000008117 stearic acid Substances 0.000 claims abstract description 32
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000001035 drying Methods 0.000 claims abstract description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 9
- 238000000576 coating method Methods 0.000 claims abstract description 9
- 238000003851 corona treatment Methods 0.000 claims abstract description 9
- 239000008367 deionised water Substances 0.000 claims abstract description 4
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims abstract description 4
- 239000004945 silicone rubber Substances 0.000 claims description 15
- 239000011787 zinc oxide Substances 0.000 claims description 8
- 239000012212 insulator Substances 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims 1
- 238000009422 external insulation Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000005661 hydrophobic surface Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003760 magnetic stirring Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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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
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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
- C08J7/06—Coating with compositions not containing macromolecular substances
-
- 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
- C08J2383/00—Characterised by the use of 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; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Silicon Compounds (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Sampling And Sample Adjustment (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a method for preparing a super-hydrophobic surface on the surface of silicon rubber, which relates to the field of high-voltage external insulation and specifically comprises the following steps: the method comprises the following steps: washing and wiping surface dirt by using deionized water and absolute ethyl alcohol respectively, and naturally airing; step two: weighing 0.800g of stearic acid, pouring the stearic acid into a beaker I containing 20ml of absolute ethyl alcohol solution, and stirring by a magnetic stirrer; step three: then weighing 1.5g of zinc oxide powder, adding the zinc oxide powder into the solution in the beaker I, and stirring by a magnetic stirrer; step four: performing corona treatment on the surface of the silicon rubber by using a high-voltage test device; step five: and immediately uniformly coating the prepared solution on the surface of the corona-treated silicon rubber by using a brush, then putting the silicon rubber into a blast drying oven for drying at 40 ℃ for 30 minutes, taking out the silicon rubber and drying the silicon rubber at room temperature. In the implementation process of the method, the hydrophobicity can be kept for a long time, and the high superhydrophobicity is achieved.
Description
Technical Field
The invention relates to the field of high-voltage external insulation, in particular to a method for preparing a super-hydrophobic surface on the surface of silicon rubber.
Background
The silicon rubber insulators are used in the transmission lines of the existing power systems on a large scale, are used for electrical insulation and mechanical support of the lines, and have important significance for guaranteeing normal transmission of electric energy. The silicone rubber is an organic external insulating material and has certain hydrophobicity, but the hydrophobicity of the silicone rubber insulator is reduced due to the erosion of external ultraviolet rays and wind and rain. In order to improve the pollution flashover resistance and the icing resistance of the silicone rubber insulator, the coating with the super-hydrophobic effect is prepared on the surface of the silicone rubber and has important significance. Because the silicone rubber has certain hydrophobicity, in order to have better chemical connection with other materials, the invention firstly carries out corona treatment on the surface of the silicone rubber to obtain an active and hydrophilic silicone rubber surface, and then adopts the method of stearic acid, zinc oxide and absolute ethyl alcohol to prepare a hydrophobic surface with higher hydrophobic effect and longer durability on the surface of the silicone rubber, thereby improving the dirt flash resistance and ice coating resistance of the silicone rubber insulator and improving the power transmission stability.
Disclosure of Invention
The invention aims to provide a method for preparing a super-hydrophobic surface on the surface of silicon rubber so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for preparing a super-hydrophobic surface on a silicon rubber surface comprises the following steps:
the method comprises the following steps: washing a 10cm multiplied by 10cm silicon rubber sample by deionized water and absolute ethyl alcohol respectively to wipe dirt on the surface, and naturally drying;
step two: weighing 0.800g of stearic acid, when the stearic acid is weighed, weighing through an analytical balance, when the stearic acid is weighed, firstly paving a piece of clean weighing paper on the surface of the analytical balance, then carrying out zero setting on the analytical balance, after the zero setting is finished, putting the stearic acid on the weighing paper for weighing, when the data on the analytical balance reaches 0.800g, taking away the weighing paper containing the stearic acid, pouring the stearic acid into a beaker I containing 20ml of anhydrous ethanol solution, and stirring through a magnetic stirrer;
step three: then weighing 1.5g of zinc oxide powder, adding the zinc oxide powder into the solution in the beaker I, and stirring by a magnetic stirrer;
step four: performing corona treatment on the surface of the silicon rubber by using a high-voltage test device;
step five: immediately uniformly coating the prepared solution 1 on the surface of the corona-treated silicon rubber by using a brush, then putting the silicon rubber into a blast drying oven for drying at 40 ℃ for 30 minutes, taking out the silicon rubber and drying the silicon rubber at room temperature;
step six: and (3) performing a water spraying test on the surface of the silicon rubber insulator by adopting a water spraying classification method, wherein the surface of the silicon rubber presents a round sphere.
As a further scheme of the invention: the analytical balance has a weighing error of not more than 0.001g when weighing.
As a further scheme of the invention: the stirring time is set to 10min when the stearic acid is dissolved in the absolute ethyl alcohol solution.
As a further scheme of the invention: the step of weighing the zinc oxide powder is consistent with the method of weighing stearic acid in the step one.
As a further scheme of the invention: the stirring time for uniformly mixing the zinc oxide and the stearic acid solution is set as 1 h.
As a further scheme of the invention: the electrode is a multi-needle electrode, the distance between the electrode and the surface of the silicon rubber is 1cm, the alternating voltage is 10kV, and corona treatment is carried out for 1 h.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, the test transformer is adopted to carry out corona treatment on the surface of the silicon rubber, so that the surface of the silicon rubber has certain chemical activity, and then the surface of the silicon rubber is subjected to super-hydrophobic surface preparation, so that the surface of the silicon rubber and the hydrophobic coating can be connected by chemical bonds, and the silicon rubber has strong adhesive force and can keep long-term hydrophobicity;
(2) for the super-hydrophobic preparation coating, stearic acid is dissolved in absolute ethyl alcohol, then zinc oxide is added, the mixture is uniformly mixed through magnetic stirring, the solution is coated on the surface of silicon rubber, the silicon rubber is dried through a drying box, the absolute ethyl alcohol is evaporated, zinc oxide serving as a supporting structure is formed on the surface of the silicon rubber, and the stearic acid wraps the zinc oxide and can play a role in higher super-hydrophobic property;
(3) the method comprises the steps of firstly carrying out corona treatment on the surface of the silicon rubber, then preparing stearic acid, zinc oxide and an absolute ethyl alcohol solution, then uniformly coating the solution on the surface of the silicon rubber, then drying the silicon rubber in a drying box, and naturally airing the silicon rubber.
Drawings
FIG. 1 is a diagram of a silicon rubber superhydrophobic surface prepared by a method for preparing a superhydrophobic surface on a silicon rubber surface.
Fig. 2 is a diagram showing a state of water droplets on the surface of silicone rubber in a method for preparing a superhydrophobic surface on the surface of silicone rubber.
Fig. 3 is a diagram showing a state of a single water droplet on a surface of a silicon rubber in a method for preparing a superhydrophobic surface on the surface of the silicon rubber.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the embodiment of the invention, a method for preparing a super-hydrophobic surface on the surface of silicon rubber comprises the following steps:
the method comprises the following steps: washing a 10cm multiplied by 10cm silicon rubber sample by deionized water and absolute ethyl alcohol respectively to wipe dirt on the surface, and naturally drying;
step two: weighing 0.800g of stearic acid, when weighing stearic acid, weighing through an analytical balance, wherein the weighing error of the analytical balance during weighing is not more than 0.001g, when weighing, firstly paving a piece of clean weighing paper on the surface of the analytical balance, then carrying out zero setting on the analytical balance, after the zero setting is finished, putting the stearic acid on the weighing paper for weighing, when the data on the analytical balance reaches 0.800g, taking the weighing paper containing the stearic acid away, pouring the stearic acid into a beaker I containing 20ml of anhydrous ethanol solution, and stirring through a magnetic stirrer for 10 minutes to completely dissolve the stearic acid;
step three: then weighing 1.5g of zinc oxide powder, wherein the step of weighing the zinc oxide powder is consistent with the method for weighing stearic acid in the step one, then adding the zinc oxide powder into the solution in the beaker one, and stirring the solution by using a magnetic stirrer for 1 hour to uniformly mix the zinc oxide and the stearic acid solution, and marking the solution as solution 1;
step four: performing corona treatment on the surface of the silicon rubber by using a high-voltage test device, wherein the electrode is a multi-needle electrode, the distance between the electrode and the surface of the silicon rubber is 1cm, the alternating voltage is 10kV, and the surface hydrophobicity of the silicon rubber is detected;
step five: immediately uniformly coating the prepared solution 1 on the surface of the corona-treated silicon rubber by using a brush, then putting the silicon rubber into a blast drying oven for drying at 40 ℃ for 30 minutes, taking out the silicon rubber and drying the silicon rubber at room temperature;
step six: and (3) performing a water spraying test on the surface of the silicon rubber insulator by adopting a water spraying classification method, wherein the surface of the silicon rubber presents a round sphere.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (5)
1. A method for preparing a super-hydrophobic surface on the surface of silicon rubber is characterized by comprising the following steps:
the method comprises the following steps: washing a 10cm multiplied by 10cm silicon rubber sample by deionized water and absolute ethyl alcohol respectively to wipe dirt on the surface of the glass, and naturally drying;
step two: weighing 0.800g of stearic acid, when the stearic acid is weighed, weighing through an analytical balance, when the stearic acid is weighed, firstly paving a piece of clean weighing paper on the surface of the analytical balance, then carrying out zero setting on the analytical balance, after the zero setting is finished, putting the stearic acid on the weighing paper for weighing, when the data on the analytical balance reaches 0.800g, taking away the weighing paper containing the stearic acid, pouring the stearic acid into a beaker I containing 20ml of anhydrous ethanol solution, and stirring through a magnetic stirrer;
step three: then weighing 1.5g of zinc oxide powder, adding the zinc oxide powder into the solution in the beaker I, stirring by a magnetic stirrer, and marking as solution 1;
step four: performing corona treatment on the surface of the silicon rubber by using a high-voltage test device, wherein the electrode is a multi-needle electrode, the distance between the electrode and the surface of the silicon rubber is 1cm, the alternating voltage is 10kV, and the corona treatment is performed for 1 h;
step five: immediately uniformly coating the prepared solution 1 on the surface of the corona-treated silicon rubber by using a brush, then putting the silicon rubber into a blast drying oven for drying at 40 ℃ for 30 minutes, taking out the silicon rubber and drying the silicon rubber at room temperature;
step six: and (3) performing a water spraying test on the surface of the silicon rubber insulator by adopting a water spraying classification method, wherein the surface of the silicon rubber presents a round sphere.
2. The method for preparing the superhydrophobic surface on the surface of the silicone rubber according to claim 1, wherein the analytical balance has a weighing error of not more than 0.001g during weighing.
3. The method for preparing a superhydrophobic surface on the surface of silicone rubber according to claim 1, wherein the stirring time for dissolving the stearic acid in the absolute ethanol solution is set to 10 min.
4. The method for preparing a superhydrophobic surface on a silicone rubber surface according to claim 1, wherein the step of weighing the zinc oxide powder is consistent with the method of weighing stearic acid in the step one.
5. The method for preparing a superhydrophobic surface on the surface of silicone rubber according to claim 1, wherein the stirring time for uniformly mixing the zinc oxide and the stearic acid solution is set to be 1 h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811556631.6A CN109651639B (en) | 2018-12-19 | 2018-12-19 | Method for preparing super-hydrophobic surface on surface of silicon rubber |
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| CN201811556631.6A CN109651639B (en) | 2018-12-19 | 2018-12-19 | Method for preparing super-hydrophobic surface on surface of silicon rubber |
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| CN109651639B true CN109651639B (en) | 2020-11-24 |
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| US8354160B2 (en) * | 2006-06-23 | 2013-01-15 | 3M Innovative Properties Company | Articles having durable hydrophobic surfaces |
| CN103224719B (en) * | 2013-02-04 | 2015-05-13 | 湖北大学 | Fluorosilicone material for super-hydrophobic coating and its preparation method and use method |
| CN106065242B (en) * | 2016-05-31 | 2018-09-28 | 国网河南省电力公司周口供电公司 | A kind of remodeling method of outdoor power equipment high temperature resistant ultra-hydrophobicity |
| CN108504281A (en) * | 2018-03-30 | 2018-09-07 | 华南理工大学 | A kind of stabilization can repair the preparation method of zinc oxide/polysiloxanes super-hydrophobic coat |
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