CN102290147B - Method for preparing super hydrophobic ice covering resistant aluminum twisted wire - Google Patents
Method for preparing super hydrophobic ice covering resistant aluminum twisted wire Download PDFInfo
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- CN102290147B CN102290147B CN 201110169992 CN201110169992A CN102290147B CN 102290147 B CN102290147 B CN 102290147B CN 201110169992 CN201110169992 CN 201110169992 CN 201110169992 A CN201110169992 A CN 201110169992A CN 102290147 B CN102290147 B CN 102290147B
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Abstract
The invention discloses a method for preparing a super hydrophobic ice covering resistant aluminum twisted wire, which belongs to the technical field of ice covering resistance of power transmission lines. The method comprises the following steps of: cleanly polishing a surface oxidation layer and a dirt layer of an aluminum single line, washing, drying, and thus obtaining a smooth aluminum single line; etching the surface of the smooth aluminum single line by using an etching agent, washing, drying, and thus obtaining an aluminum single line with a coarse structure; stranding the obtained aluminum single line with the coarse structure by using a wire twisting machine to form an aluminum twisted wire; etching the obtained aluminum twisted wire by using the etching agent, washing, drying, and thus obtaining an aluminum twisted wire with the coarse structure; and performing hydrophobic treatment on the aluminum twisted wire with the coarse structure. The super hydrophobic ice covering resistant aluminum twisted wire prepared by the method can effectively suppress ice covering formation, has a simple preparation process, and is suitable for large-scale flow line production.
Description
Technical field
The invention belongs to the preventing ice coating in electric transmission line technical field, be specifically related to a kind of preparation method of super hydrophobic ice covering resistant aluminum twisted wire.
Background technology
Overhead power transmission aluminum stranded wire is the main artery that the electric power system energy is carried, cross over mountain after mountain and be in the different natural conditions, in the natural environment of low temperature sleet or drizzle, the aluminium stranded conductor surface will form serious icing, increased the mechanical load of transmission line, cause broken string, the security incidents generations such as tower, conductor galloping, having a strong impact on safety, the reliability service of electric power system.Therefore carry out anti-icing and deicing work for ensureing that the electric power system reliability service has great importance for power transmission aluminum stranded wire.
Mainly there is following mode for power transmission aluminum stranded wire surface anti-icing and deicing method both at home and abroad at present: heating power deicing, mechanical deicing, natural passive means deicing etc., these methods are owing to depend on energy that the external world provides or icing that operation removes the aluminium stranded conductor surface, therefore the validity of its ice-removing and ice-preventing is affected by conductor length, topography and geomorphology, weather conditions etc., and be not suitable on a large scale, transmission pressure is anti-icing under many weather conditions.
Research has coating or the wire of anti-icing performance, suppresses and eliminate formation and the growth of icing by wire self, can fundamentally eliminate the disaster that wire icing brings.At present, though there are a large amount of researchers to carry out the research of ice-covering-proof coating, such as hydrophobic coat, electric heating coating, freezing point inhibitor coating, but these researchers' result of the test shows the formation time that all can only delay to a certain extent the icing layer, formation that can not the establishment icing.All can not use as effective ice-covering-proof coating for this reason.
Summary of the invention
The objective of the invention is a kind of preparation method of ultraphobic water-based power transmission aluminum stranded wire of establishment icing formation, the method is by prevent formation and the growth of icing in a kind of ultraphobic water-based structure of aluminium stranded conductor surface structure.
A kind of preparation method of super hydrophobic ice covering resistant aluminum twisted wire, the method comprises the steps:
(1) aluminium single line surface oxide layer and dirty layer polishing is clean, clean and oven dry, obtain the smooth aluminum single line;
(2) adopt etching agent that etching processing is carried out on smooth aluminum single line surface, clean and oven dry, obtain coarse structure aluminium single line;
(3) utilize stranding machine that many coarse structure aluminium single lines are twisted into aluminium stranded conductor;
(4) adopt etching agent that the aluminium stranded conductor that obtains is carried out etching processing, clean and oven dry, obtain the coarse structure aluminium stranded conductor;
(5) the coarse structure aluminium stranded conductor being carried out hydrophobic processes.
Etching agent is mixed by hydrochloric acid and sulfuric acid in step (2) and (4), the concentration of described hydrochloric acid and sulfuric acid is respectively 37%, 98%, the concentration here refers to mass fraction, and the volume ratio of hydrochloric acid and sulfuric acid is (3～6): 1, and preferred volume ratio is 4: 1.
Hydrophobic described in the step (5) is treated to: silicon fluoride solution is coated on coarse structure aluminium stranded conductor surface, and carry out drying and processing, wherein, the concentration of silicon fluoride solution is 1～5wt% (solvent is ethanol), painting method can be for brushing, brushing number of times is 3～8 times, and the temperature of oven dry is 80～200 ℃, and the time of oven dry is 1.5～3h.
Can adopt 120～360# sand paper that the aluminium single line is polished in the step (1).
Method of cleaning can adopt Ultrasonic Cleaning in step (1), (2) and (4), and the temperature of oven dry is 50～100 ℃, and the time of oven dry is 20～40min.
The time of the etching processing in the step (2) is 30s～120s, and the time of the etching processing in the step (4) is 1min～5min.
The invention has the beneficial effects as follows the coarse structure that changes aluminium single line surface by simple chemical etching method, eliminate the dysplasia point that place, the stranded rear slit of aluminium stranded conductor may exist, and carry out secondarily etched processing by the aluminium stranded conductor to the stranded rear acquisition of coarse aluminium single line and construct the even roughness body structure surface in any position, aluminium stranded conductor surface, obtain to have the aluminium stranded conductor of good super hydrophobicity performance after modifying through the silicon fluoride coating.This ultraphobic water-based aluminium stranded conductor possesses the water droplet contact angle more than 160 ° and is lower than 2 ° water droplet glide angle, establishment under the microthermal climate condition super-cooling waterdrop adhesion and freeze, thereby eliminated formation and the growth of aluminium stranded conductor surface icing.The etching agent that this preparation method adopts, coating material, stranding machine are the market sale industrial products, do not pass through any aftertreatment and transformation, have the simple characteristics of preparation technology, are suitable for extensive, streamline production.
Description of drawings
Fig. 1 is the preparation flow figure of super hydrophobic ice covering resistant aluminum twisted wire.
Embodiment
The following examples can make those skilled in the art more fully understand the present invention, but do not limit the present invention in any way.
Embodiment 1
Be illustrated in figure 1 as super hydrophobic ice covering resistant aluminum twisted wire preparation flow figure, concrete preparation process is:
(1) with 7 long 30cm, diameter 2.6mm aluminium single line after 120#, 360# sand papering, at 60 ℃ of oven dry 30min, obtain the smooth aluminum single line after ultrasonic pure water cleans;
(2) place etching agent to process 60s on the smooth aluminum single line, ultrasonic pure water is cleaned and at 60 ℃ of lower oven dry 30min, is obtained coarse structure aluminium single line;
(3) then utilize stranding machine with these the 7 strands stranded formation aluminium stranded conductors of coarse aluminium single line;
(4) aluminium stranded conductor that obtains is put into etching agent and process 3min, ultrasonic pure water is cleaned, and 60 ℃ of lower oven dry 30min obtain the coarse structure aluminium stranded conductor;
(5) adopt 1.2wt% or 1.5wt% silicon fluoride solution brushing aluminium stranded conductor 5 times, behind 140 ℃ of drying and processing 2h, obtain required super hydrophobic ice covering resistant aluminum twisted wire.
Wherein, etching agent described in step (2) and (4) was mixed by hydrochloric acid and sulfuric acid in 4: 1 by volume.The concentration of described hydrochloric acid and sulfuric acid is respectively 37%, 98%.
Embodiment 2
Concrete preparation process is:
(1) with 19 long 40cm, diameter 2.5mm aluminium single line after the 120# sand papering, at 80 ℃ of oven dry 35min, obtain the smooth aluminum single line after ultrasonic pure water cleans;
(2) place etching agent to process 110s on the smooth aluminum single line, ultrasonic pure water is cleaned and at 80 ℃ of lower oven dry 35min, is obtained coarse structure aluminium single line;
(3) then utilize stranding machine with these the 19 strands stranded formation aluminium stranded conductors of coarse aluminium single line;
(4) aluminium stranded conductor that obtains is put into etching agent and process 5min, ultrasonic pure water is cleaned, and 80 ℃ of lower oven dry 35min obtain the coarse structure aluminium stranded conductor;
(5) adopt 3wt% silicon fluoride solution brushing aluminium stranded conductor 8 times, behind 180 ℃ of drying and processing 1.5h, obtain required super hydrophobic ice covering resistant aluminum twisted wire.
Wherein, etching agent described in step (2) and (4) was mixed by hydrochloric acid and sulfuric acid in 3: 1 by volume, and the concentration of hydrochloric acid and sulfuric acid is respectively 37%, 98%, and the concentration here refers to mass fraction.
Embodiment 3
Concrete preparation process is:
(1) with 7 long 35cm, diameter 3.6mm aluminium single line after the 360# sand papering, at 95 ℃ of oven dry 20min, obtain the smooth aluminum single line after ultrasonic pure water cleans;
(2) place etching agent to process 35s on the smooth aluminum single line, ultrasonic pure water is cleaned and at 95 ℃ of lower oven dry 20min, is obtained coarse structure aluminium single line;
(3) then utilize stranding machine with these the 7 strands stranded formation aluminium stranded conductors of coarse aluminium single line;
(4) aluminium stranded conductor that obtains is put into etching agent and process 2min, ultrasonic pure water is cleaned, and 95 ℃ of lower oven dry 20min obtain the coarse structure aluminium stranded conductor;
(5) adopt 4.5wt% silicon fluoride solution brushing aluminium stranded conductor 4 times, behind 80 ℃ of drying and processing 3h, obtain required super hydrophobic ice covering resistant aluminum twisted wire.
Wherein, etching agent described in step (2) and (4) is respectively 37%, 98% hydrochloric acid and sulfuric acid by mass fraction and mixed in 5: 1 by volume.
Embodiment 4
The super hydrophobic ice covering resistant aluminum twisted wire that embodiment 1 is obtained and put into-6 ℃ the low temperature environment icing of spraying water without the smooth aluminum twisted wire of any processing, and its surperficial ice coating state is observed in good time: without the aluminium stranded conductor surface of any processing when the low temperature subcooled water water spray 1min, its surface has formed the icing layer of one deck densification, increase with water spraying time, the vertical length of the icing layer thickness on aluminium stranded conductor surface and ice constantly increases, the surface has formed serious icing during to icing 60min, to aluminium stranded conductor safe and reliable operation harm.
And the super hydrophobic ice covering resistant aluminum twisted wire that embodiment 1 prepares is under low temperature subcooled water action condition, during to icing 60min, do not have obvious icing, its surface all has the ability that good inhibition icing forms except regional area, simultaneously part can occur with the increase of icing time and comes off in the icing that forms of these local icing point places, and landing has occured when 60min the icing point that for example surface forms during icing 30min.Can find out relatively that by this prepared super hydrophobic ice covering resistant aluminum twisted wire of the inventive method has good anti-icing performance.
The above; only for the better embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (2)
1. the preparation method of a super hydrophobic ice covering resistant aluminum twisted wire, the method comprises the steps:
(1) aluminium single line surface oxide layer and dirty layer polishing is clean, clean and oven dry, obtain the smooth aluminum single line;
(2) adopt etching agent that etching processing is carried out on smooth aluminum single line surface, clean and oven dry, obtain coarse structure aluminium single line;
(3) utilize stranding machine with the many stranded formation aluminium stranded conductors of coarse structure aluminium single line;
(4) adopt etching agent that the aluminium stranded conductor that obtains is carried out etching processing, clean and oven dry, obtain the coarse structure aluminium stranded conductor;
(5) the coarse structure aluminium stranded conductor being carried out hydrophobic processes, it is characterized in that: etching agent is mixed by hydrochloric acid and sulfuric acid in described step (2) and (4), the mass fraction of described hydrochloric acid and sulfuric acid is respectively 37%, 98%, and the volume ratio of hydrochloric acid and sulfuric acid is 4:1; Be that the silicon fluoride solution of 1 ~ 5wt% is coated on coarse structure aluminium stranded conductor surface with concentration, and carry out drying and processing.
2. method according to claim 1 is characterized in that: painting method is for brushing, and brushing number of times is 3 ~ 8 times, and the temperature of oven dry is 80～200 ℃, and the time of oven dry is 1.5 ~ 3h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110169992 CN102290147B (en) | 2011-06-22 | 2011-06-22 | Method for preparing super hydrophobic ice covering resistant aluminum twisted wire |
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| CN 201110169992 CN102290147B (en) | 2011-06-22 | 2011-06-22 | Method for preparing super hydrophobic ice covering resistant aluminum twisted wire |
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| CN102290147B true CN102290147B (en) | 2013-04-24 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101577151A (en) * | 2009-06-12 | 2009-11-11 | 华北电力大学 | Method for preventing ice from covering surface of power transmission bare conductor |
| CN101698939A (en) * | 2009-11-09 | 2010-04-28 | 东南大学 | Method for preparing icing-resistant copper surface with super hydrophobicity and low adhesiveness |
| CN101705488A (en) * | 2009-11-09 | 2010-05-12 | 东南大学 | Surface processing method of super-hydrophobic ice-covering-proof aluminum and steel with rough surface |
| CN101707063A (en) * | 2009-11-18 | 2010-05-12 | 芜湖明远电线电缆有限责任公司 | Anti-ice overload conductor |
| CN102041509A (en) * | 2011-01-13 | 2011-05-04 | 中南大学 | Preparation method for constructing super-hydrophobic structure on surface of aluminum alloy |
| CN102097187A (en) * | 2011-02-21 | 2011-06-15 | 山东大学 | Method for producing anti-icing aluminum conductor steel reinforced |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101577151A (en) * | 2009-06-12 | 2009-11-11 | 华北电力大学 | Method for preventing ice from covering surface of power transmission bare conductor |
| CN101698939A (en) * | 2009-11-09 | 2010-04-28 | 东南大学 | Method for preparing icing-resistant copper surface with super hydrophobicity and low adhesiveness |
| CN101705488A (en) * | 2009-11-09 | 2010-05-12 | 东南大学 | Surface processing method of super-hydrophobic ice-covering-proof aluminum and steel with rough surface |
| CN101707063A (en) * | 2009-11-18 | 2010-05-12 | 芜湖明远电线电缆有限责任公司 | Anti-ice overload conductor |
| CN102041509A (en) * | 2011-01-13 | 2011-05-04 | 中南大学 | Preparation method for constructing super-hydrophobic structure on surface of aluminum alloy |
| CN102097187A (en) * | 2011-02-21 | 2011-06-15 | 山东大学 | Method for producing anti-icing aluminum conductor steel reinforced |
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