CN102290147A - 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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- CN102290147A CN102290147A CN 201110169992 CN201110169992A CN102290147A CN 102290147 A CN102290147 A CN 102290147A CN 201110169992 CN201110169992 CN 201110169992 CN 201110169992 A CN201110169992 A CN 201110169992A CN 102290147 A CN102290147 A CN 102290147A
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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 ultraphobic water-based ice-covering-proof 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, 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 at power transmission aluminum stranded wire.
Mainly there is following mode at 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 influenced 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 the coating or the lead of anti-icing performance, suppresses and eliminate the formation and the growth of icing by lead 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 anti-icing coating, 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 the icing layer to a certain extent, can not effectively suppress the formation of icing.All can not use as effectively anti-icing coating for this reason.
Summary of the invention
The preparation method who the objective of the invention is a kind of ultraphobic water-based power transmission aluminum stranded wire of effective inhibition icing formation, this method are by prevent the 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 ultraphobic water-based ice-covering-proof aluminum twisted wire, this 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 handles.
Etching agent is mixed by hydrochloric acid and sulfuric acid in step (2) and (4), and the concentration of described hydrochloric acid and sulfuric acid is respectively 37%, 98%, and 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 dry processing, wherein, the concentration of silicon fluoride solution is 1~5wt% (solvent is an 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 waves for 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, slit, the stranded back of aluminium stranded conductor may exist, and carry out secondarily etched processing by the aluminium stranded conductor that the stranded back of coarse aluminium single line is obtained and construct the even roughness body structure surface in any position, aluminium stranded conductor surface, through the silicon fluoride coating modify the back obtain to have good ultraphobic water-based can aluminium stranded conductor.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, has effectively suppressed the adhesion of super-cooling waterdrop under the microthermal climate condition and freezes, thereby eliminated the formation and the growth of aluminium stranded conductor surface icing.The etching agent that this preparation method adopted, coating material, stranding machine are the market sale industrial products, do not pass through any aftertreatment and transformation, have preparation technology's characteristic of simple, are suitable for extensive, streamline production.
Description of drawings
Fig. 1 is the preparation flow figure of ultraphobic water-based ice-covering-proof 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 ultraphobic water-based ice-covering-proof 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, ultrasonic pure water cleans the back at 60 ℃ of oven dry 30min, obtains the smooth aluminum single line;
(2) place etching agent to handle 60s on the smooth aluminum single line, ultrasonic pure water is cleaned and is dried 30min down at 60 ℃, obtains coarse structure aluminium single line;
(3) utilize stranding machine with these the 7 strands stranded formation aluminium stranded conductors of coarse aluminium single line then;
(4) aluminium stranded conductor that obtains is put into etching agent and handle 3min, ultrasonic pure water is cleaned, and dries 30min down, obtains the coarse structure aluminium stranded conductor for 60 ℃;
(5) adopt 1.2wt% or 1.5wt% silicon fluoride solution brushing aluminium stranded conductor 5 times, after 2h is handled in 140 ℃ of oven dry, obtain required ultraphobic water-based ice-covering-proof 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, ultrasonic pure water cleans the back at 80 ℃ of oven dry 35min, obtains the smooth aluminum single line;
(2) place etching agent to handle 110s on the smooth aluminum single line, ultrasonic pure water is cleaned and is dried 35min down at 80 ℃, obtains coarse structure aluminium single line;
(3) utilize stranding machine with these the 19 strands stranded formation aluminium stranded conductors of coarse aluminium single line then;
(4) aluminium stranded conductor that obtains is put into etching agent and handle 5min, ultrasonic pure water is cleaned, and dries 35min down, obtains the coarse structure aluminium stranded conductor for 80 ℃;
(5) adopt 3wt% silicon fluoride solution brushing aluminium stranded conductor 8 times, after 1.5h is handled in 180 ℃ of oven dry, obtain required ultraphobic water-based ice-covering-proof 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, ultrasonic pure water cleans the back at 95 ℃ of oven dry 20min, obtains the smooth aluminum single line;
(2) place etching agent to handle 35s on the smooth aluminum single line, ultrasonic pure water is cleaned and is dried 20min down at 95 ℃, obtains coarse structure aluminium single line;
(3) utilize stranding machine with these the 7 strands stranded formation aluminium stranded conductors of coarse aluminium single line then;
(4) aluminium stranded conductor that obtains is put into etching agent and handle 2min, ultrasonic pure water is cleaned, and dries 20min down, obtains the coarse structure aluminium stranded conductor for 95 ℃;
(5) adopt 4.5wt% silicon fluoride solution brushing aluminium stranded conductor 4 times, after 3h is handled in 80 ℃ of oven dry, obtain required ultraphobic water-based ice-covering-proof 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 ultraphobic water-based ice-covering-proof 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, and the aluminium stranded conductor safe and reliable operation is caused serious harm.
And the ultraphobic water-based ice-covering-proof aluminum twisted wire that embodiment 1 prepares is under low temperature subcooled water action condition, during to icing 60min, do not have tangible icing, its surface all has the ability that good inhibition icing forms except that regional area, simultaneously part can take place with the increase of icing time and comes off in the icing that forms of these local icing point places, and for example landing has taken place when 60min the icing point that the surface forms during icing 30min.More as can be seen, the prepared ultraphobic water-based ice-covering-proof aluminum twisted wire of the inventive method has good anti-icing performance by this.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and 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 (10)
1. the preparation method of a ultraphobic water-based ice-covering-proof aluminum twisted wire, it is characterized in that: this 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 handles.
2. method according to claim 1 is characterized in that: etching agent is mixed by hydrochloric acid and sulfuric acid in step (2) and (4), and 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 (3~6): 1.
3. method according to claim 2 is characterized in that: the volume ratio of hydrochloric acid and sulfuric acid is 4: 1.
4. method according to claim 1 is characterized in that: the hydrophobic described in the step (5) is treated to: silicon fluoride solution is coated on coarse structure aluminium stranded conductor surface, and dries processing.
5. method according to claim 4 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.
6. method according to claim 4 is characterized in that: the concentration of silicon fluoride solution is 1~5wt%.
7. method according to claim 1 is characterized in that: adopt 120~360# sand paper that the aluminium single line is polished in the step (1).
8. method according to claim 1 is characterized in that: method of cleaning adopts ultrasonic waves for 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.
9. method according to claim 1 is characterized in that: the time of the etching processing in the step (2) is 30s~120s.
10. method according to claim 1 is characterized in that: the time of the etching processing in the step (4) is 1min~5min.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104217785A (en) * | 2014-09-17 | 2014-12-17 | 国家电网公司 | Aluminum stranded conductor capable of delaying icing and having low ice adhesion force and preparation method thereof |
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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 |
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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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CN104217785A (en) * | 2014-09-17 | 2014-12-17 | 国家电网公司 | Aluminum stranded conductor capable of delaying icing and having low ice adhesion force and preparation method thereof |
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