CN106811740B - Long-acting drag-reducing coating, preparation method and application - Google Patents
Long-acting drag-reducing coating, preparation method and application Download PDFInfo
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- CN106811740B CN106811740B CN201510854390.3A CN201510854390A CN106811740B CN 106811740 B CN106811740 B CN 106811740B CN 201510854390 A CN201510854390 A CN 201510854390A CN 106811740 B CN106811740 B CN 106811740B
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/1204—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material inorganic material, e.g. non-oxide and non-metallic such as sulfides, nitrides based compounds
- C23C18/1208—Oxides, e.g. ceramics
- C23C18/1216—Metal oxides
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- 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
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/125—Process of deposition of the inorganic material
Abstract
The invention discloses a kind of long-acting drag-reducing coating, preparation method and applications.The coating includes zinc oxide films film layer and the long chain alkane layer for being adhered to the zinc oxide films film surface.This method prepares amphiphilic (oleophylic/hydrophilic) zinc-oxide film first with chemical vapour deposition technique on a wire mesh, then modification is carried out to zinc-oxide film using dimethyl silicone polymer, it is set to have single parent's characteristic of oleophilic drainage, immersion oil processing finally is carried out to PDMS modified zinc oxide, to obtain the long-acting drag-reducing coating.Drag-reducing coating of the invention can also regulate and control change drag-reduction effect by temperature, and effectively overcome super-hydrophobic drag reduction technology Problem of Failure under high speed, condition of high voltage, it is achieved in that by the way that solid-gas-water termination is changed into solid-oil-water interface, to play the role of drag reduction on the high hydraulic pressure boat body of high speed.Furthermore the drag-reducing coating that this method is constructed still has drag reduction effect after long period of soaking in water, hence it is evident that better than super-hydrophobic draft reduction material.
Description
Technical field
The invention belongs to field of material technology, more particularly to a kind of long-acting drag-reducing coating and preparation method thereof.
Background technique
The utilization efficiency of fuel is improved, reducing energy consumption is countries in the world problem encountered.Drag reduction technology is then from subtracting
It sets out in terms of small movable body resistance and improves the efficiency of unit energy.By taking marine industry as an example, the speed of service of catic water line
It is the important indicator for evaluating its performance with energy expenditure rate, wherein the speed of service decides the performance of sail body, and energy consumption
Rate decides the cruising ability and operating cost of sail body.The energy expenditure rate of boat body is removed to be had outside the Pass with engine efficiency, and navigate body
Running resistance is also major influence factors in the seawater.Therefore, the running resistance of boat body how is reduced, the movement speed of boat body is improved
Degree extends the voyage under specific energy consumption, is the key that improve to relate to extra large equipment performance.
To movable body in Yu Haiyang, the Fish Swimming Traces such as dolphin, shark speed is up to 70km/h, this is well beyond biomethanics
Maximum speed calculated.The study found that the scale and epidermal mucus layer of the streamlined appearance of fish, regular distribution play drop
The effect of harmonic motion resistance.Therefore, learn to natural, become the starting point that numerous researchers carry out drag reduction work.
CN102492942A discloses a kind of drag reduction superhydrophobic coating and preparation method thereof, and imitative lotus leaf structure is used to construct
Super-hydrophobic coat, to reduce the resistance of movable body.But under high speed and high depth condition, super-hydrophobic solid-gas-hydrosphere
Face is changed into solid-water termination to generate and increase resistance effect.
CN103754819A discloses a kind of preparation method of flexible MEMS resistance reducing covering, by preparing micro- pit array
Covering, realizes drag reduction, but there are high cost, prepare the problems such as area is limited.
In view of this, exploitation novel drag reduction coating is the key that solve the problems, such as above-mentioned drag reduction technology.
Summary of the invention
The purpose of the present invention is to provide a kind of long-acting drag-reducing coating and preparation method thereof, with overcome it is in the prior art not
Foot.
To achieve the above object, the invention provides the following technical scheme:
The embodiment of the invention discloses a kind of long-acting drag-reducing coating, including zinc oxide films film layer and it is adhered to the oxidation
The long chain alkane layer of zinc thin-film surface.
Preferably, in above-mentioned long-acting drag-reducing coating, the long chain alkane layer is by the length containing carbon number at 18 or more
Carbochain alkane composition.
Preferably, in above-mentioned long-acting drag-reducing coating, the fusion temperature of the Long carbon chain alkane is greater than 25 DEG C.
Preferably, in above-mentioned long-acting drag-reducing coating, the Long carbon chain alkane is solid-state at room temperature.
Preferably, it in above-mentioned long-acting drag-reducing coating, is formed between the zinc oxide films film layer and long chain alkane layer
Oleophilic drainage layer.
Preferably, in above-mentioned long-acting drag-reducing coating, the oleophilic drainage layer is organosilicon material.
Correspondingly, the embodiment of the invention also discloses a kind of preparation methods of long-acting drag-reducing coating, comprising:
Nano zinc oxide film is immersed in the treatment fluid containing organosilan and is modified, in Nano zinc oxide film table
Face obtains the coating with oleophilic drainage characteristic；
Modified Nano zinc oxide film is immersed in the long chain alkane liquid of fusing, carries out self assembly processing, grown
Imitate drag-reducing coating.
Preferably, the preparation method of the Nano zinc oxide film includes: with zinc nitrate, ammonium chloride, urea, ammonium hydroxide for original
Material prepares solution, immerses the substrate in 60 DEG C~100 DEG C solution, reacts 1h~5h, obtains zinc-oxide film.
Preferably, the processing liquid and preparation method thereof containing organosilan include: will be PDMS (dimethyl silicone polymer) and solid
Agent is with mass ratio 10:(1~2) it weighs, 10 times are dissolved in be uniformly mixed in the ethyl acetate of upper volume.
Preferably, the temperature of the self assembly processing is 20 DEG C~50 DEG C, and the reaction time is 5s~50s.
The embodiment of the invention also discloses the long-acting drag-reducing coatings in the application on boat body.
Compared with prior art, the invention has the advantages that
(1) coating of the present invention has excellent resistance reducing performance, and maximum drag-reduction effect meets the high hydraulic pressure boat of high speed up to 50%
The drag reduction requirement of body；
(2) present invention uses organosilane-modified zinc-oxide film, overcomes zinc oxide films film layer and long chain alkane layer is viscous
Attached property is poor, is easy to be washed, the bad disadvantage of repeatability；
(3) long chain alkane is solid-state at room temperature, and in its fusing point liquid presented above, therefore, drag-reducing coating of the present invention exists
Different drag-reduction effects is presented under the conditions of different temperature, meets different duty requirements；
(4) drag-reducing coating of the invention in the contact surface of water in solid-oil-water interface, rather than super-hydrophobic coat it is solid-
Gas-water interface solves the problems, such as the unstability of super-hydrophobic drag reduction.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in invention, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 a- Fig. 1 b show the microstructure of polydimethylsiloxane--modified zinc-oxide film in the embodiment of the present invention 1
SEM figure and three-dimensional appearance figure；
Fig. 2 show the oleophylic performance characterization knot of polydimethylsiloxane--modified zinc-oxide film in the embodiment of the present invention 1
Fruit；
Fig. 3 a is that the drag reducing efficiency in the embodiment of the present invention 1 under drag-reducing coating friction speed tests map；
Fig. 3 b is that the drag reducing efficiency that drag-reducing coating impregnates different time in water in the embodiment of the present invention 1 tests map.
Specific embodiment
In view of many defects of the prior art, inventor is studied for a long period of time and is largely practiced, and is able to propose the present invention
Technical solution, as it was noted above, the present inventor will more specifically illustrate it in conjunction with ensuing disclosure.
One aspect of the present invention discloses a kind of long-acting drag-reducing coating comprising zinc oxide films film layer and is adhered to
The long chain alkane layer of the zinc oxide films film surface.
Another aspect of the present invention also discloses a kind of preparation method of long-acting drag-reducing coating, comprising:
(1) Nano zinc oxide film is immersed in the treatment fluid containing organosilan and is modified, it is thin in nano zine oxide
Film surface obtains the coating with oleophilic drainage characteristic；
(2) modified Nano zinc oxide film is immersed in the long chain alkane liquid of fusing, carries out self assembly processing, obtains
Long-acting drag-reducing coating.
Specifically, this case selects wire mesh for matrix, makes on a wire mesh first with chemical vapour deposition technique
Standby amphiphilic (oleophylic/hydrophilic) zinc-oxide film, then repairs zinc-oxide film using dimethyl silicone polymer (PDMS)
Decorations are modified, it is made to have single parent's characteristic of oleophilic drainage, finally carry out immersion oil (such as n-octadecane room to PDMS modified zinc oxide
Temperature is solid long chain alkane and its mixture oil) processing, to obtain a kind of long-acting drag-reducing coating of resistance temperature-controllable characteristic.
The drag-reducing coating of this case can regulate and control change drag-reduction effect by temperature, and effectively overcome super-hydrophobic drag reduction technology in high speed, height
Problem of Failure under the conditions of pressure is achieved in that by the way that solid-gas-water termination is changed into solid-oil-water interface, thus in high speed
Play the role of drag reduction on high hydraulic pressure boat body.In addition, the drag-reducing coating constructed of this method still has drag reduction after long period of soaking in water
Effect, hence it is evident that be better than super-hydrophobic draft reduction material.Therefore, the present invention has oleophilic drainage single parent by compound constructed of a variety of methods
Characteristic coating is then handled using immersion oil and obtains temperature-controllable drag-reducing coating, to realize effective drag reduction.
The present invention is described further by the following example: according to following embodiments, the present invention may be better understood.
However, as it will be easily appreciated by one skilled in the art that specific material ratio, process conditions and its result described in embodiment are only used
In illustrating the present invention, without the present invention described in detail in claims should will not be limited.
Embodiment 1: the drag-reducing coating of the resistance temperature-controllable characteristic is by polydimethylsiloxane--modified zinc-oxide film base
The room temperatures such as body, surface dip-coating n-octadecane are made of solid long chain alkane and its mixture grease.
The preparation process of the drag-reducing coating with resistance temperature-controllable characteristic follows the steps below:
(1) hydro-thermal method prepares zinc-oxide film, and the preparation method of zinc-oxide film is (in terms of 100ml solution): being weighed
2.949g zinc nitrate is dissolved in 95ml deionized water, sequentially adds 0.10698g ammonium chloride, 0.6004g urea, 5ml ammonium hydroxide, then
It is put into wire mesh, control reaction temperature is 90 DEG C, and reaction time 3h obtains the zinc-oxide film of certain partial size and thickness；
(2) dimethyl silicone polymer modification zinc oxide film, the polydimethylsiloxane--modified treatment process are as follows: with
Mass ratio 10:1 weighs PDMS and curing agent, and ethyl acetate solution is added with mass ratio 1:10 and is uniformly mixed, then by zinc oxide
Film takes out drying after immersing solution 10s, is repeated 10 times, and obtains the coating with oleophilic drainage characteristic.
(3) immersion oil is handled, and the immersion oil treatment process is (by taking n-octadecane n-octadecane as an example): selection poly- two
Methylsiloxane modified zinc oxide film is matrix, is melted n-octadecane with temperature 50 C, then by dimethyl silicone polymer
Modified zinc oxide film sample immerses in solution, is taken out after about 1min to get silicon nitride-based sealing coating is arrived.
Fig. 1 a- Fig. 1 b show the microstructure of polydimethylsiloxane--modified zinc-oxide film in embodiment 1.From figure
As can be seen that the zinc oxide cluster of micro-meter scale is made of acicular nanometer line in 1a- Fig. 1 b, macro morphology is in rule protrusion knot
Structure realizes super-hydrophobic by modified.
Fig. 2 show the oleophylic performance characterization result of polydimethylsiloxane--modified zinc-oxide film in embodiment 1.From figure
As can be seen that comparing wire mesh and zinc-oxide film in 2, by there is height between the zinc-oxide film and grease of modification
Adsorption capacity, to realize efficient oleophilic drainage.
Fig. 3 a and Fig. 3 b show the resistance reducing performance characterization result of drag-reducing coating in embodiment 1.It can be seen that from Fig. 3 a
The drag reducing efficiency of material prepared reaches 30%, realizes high performance drag reduction；As can be seen that material prepared has from Fig. 3 b
Durability, even across after immersion still have high drag-reduction effect.
Embodiment 2: the drag-reducing coating of the resistance temperature-controllable characteristic is by polydimethylsiloxane--modified zinc-oxide film base
The room temperatures such as body, surface dip-coating n-octadecane are made of solid long chain alkane and its mixture grease.
The preparation process of the drag-reducing coating with resistance temperature-controllable characteristic follows the steps below:
(1) hydro-thermal method prepares zinc-oxide film, and the preparation method of zinc-oxide film is (in terms of 100ml solution): being weighed
2.949g zinc nitrate is dissolved in 95ml deionized water, sequentially adds 0.10698g ammonium chloride, 0.6004g urea, 5ml ammonium hydroxide, then
It is put into wire mesh, control reaction temperature is 80 DEG C, and reaction time 1h obtains the zinc-oxide film of certain partial size and thickness；
(2) dimethyl silicone polymer modification zinc oxide film, the polydimethylsiloxane--modified treatment process are as follows: with
Mass ratio 10:1 weighs PDMS and curing agent, and ethyl acetate solution is added with mass ratio 1:10 and is uniformly mixed, then by zinc oxide
Film takes out drying after immersing solution 10s, is repeated 5 times, and obtains the coating with oleophilic drainage characteristic.
(3) immersion oil is handled, and the immersion oil treatment process is (by taking n-octadecane as an example): selection dimethyl silicone polymer changes
Property zinc-oxide film be matrix, n-octadecane is melted with temperature 50 C, then by polydimethylsiloxane--modified zinc oxide films
Membrane sample immerses in solution, is taken out after about 1min to get silicon nitride-based sealing coating is arrived.
Embodiment 3: the drag-reducing coating of the resistance temperature-controllable characteristic is by polydimethylsiloxane--modified zinc-oxide film base
The room temperatures such as body, surface dip-coating n-octadecane are made of solid long chain alkane and its mixture grease.
The preparation process of the drag-reducing coating with resistance temperature-controllable characteristic follows the steps below:
(1) hydro-thermal method prepares zinc-oxide film, and the preparation method of zinc-oxide film is (in terms of 100ml solution): being weighed
2.949g zinc nitrate is dissolved in 95ml deionized water, sequentially adds 0.10698g ammonium chloride, 0.6004g urea, 5ml ammonium hydroxide, then
It is put into wire mesh, control reaction temperature is 90 DEG C, and reaction time 3h obtains the zinc-oxide film of certain partial size and thickness；
(2) dimethyl silicone polymer modification zinc oxide film, the polydimethylsiloxane--modified treatment process are as follows: with
Mass ratio 10:1 weighs PDMS and curing agent, and ethyl acetate solution is added with mass ratio 1:10 and is uniformly mixed, then by zinc oxide
Film takes out drying after immersing solution 10s, is repeated 10 times, and obtains the coating with oleophilic drainage characteristic.
(3) immersion oil is handled, and the immersion oil treatment process is (by taking n-octadecane as an example): selection dimethyl silicone polymer changes
Property zinc-oxide film be matrix, n-octadecane is melted with temperature 50 C, then by polydimethylsiloxane--modified zinc oxide films
Membrane sample immerses in solution, is taken out after about 1min to get silicon nitride-based sealing coating is arrived.
It should be appreciated that the technical concepts and features of above-described embodiment only to illustrate the invention, its object is to allow be familiar with this
The personage of item technology cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all
Equivalent change or modification made by Spirit Essence according to the present invention, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of preparation method of long-acting drag-reducing coating, characterized by comprising:
Nano zinc oxide film is immersed in the treatment fluid containing organosilan and is modified, is obtained on Nano zinc oxide film surface
There must be the coating of oleophilic drainage characteristic, wherein the preparation method of the treatment fluid containing machine silane includes: by poly dimethyl
Siloxanes and curing agent are with mass ratio 10:(1~2) it weighs, 10 times are dissolved in in the ethyl acetate of upper volume, are uniformly mixed,
Obtain the treatment fluid containing organosilan；
Modified Nano zinc oxide film is immersed in the long chain alkane liquid of fusing, carries out self assembly processing, the self assembly
The temperature of processing is 20 DEG C~50 DEG C, and the reaction time is 5s~50s, obtains long-acting drag-reducing coating；The long-acting drag-reducing coating packet
Include zinc oxide films film layer and be adhered to the long chain alkane layer of the zinc oxide films film surface, and the zinc oxide films film layer and
Oleophilic drainage layer is formed between long chain alkane layer.
2. the preparation method of long-acting drag-reducing coating according to claim 1, it is characterised in that: the Nano zinc oxide film
Preparation method include: using zinc nitrate, ammonium chloride, urea, ammonium hydroxide as raw material prepare solution, immerse the substrate in 60 DEG C~100 DEG C
In solution, 1h~5h is reacted, obtains zinc-oxide film.
3. the preparation method of long-acting drag-reducing coating according to claim 1, it is characterised in that: the long chain alkane layer by
Long carbon chain alkane containing carbon number at 18 or more forms.
4. the preparation method of long-acting drag-reducing coating according to claim 1, it is characterised in that: the Long carbon chain alkane
Fusion temperature is higher than 25 DEG C.
5. the preparation method of long-acting drag-reducing coating according to claim 1, it is characterised in that: the Long carbon chain alkane exists
It is at room temperature solid-state.
6. the preparation method of long-acting drag-reducing coating according to claim 1, it is characterised in that: the material of the oleophilic drainage layer
Material is selected from organosilicon material.
7. by the long-acting drag-reducing coating of any one of claim 1-6 the method preparation in the application on boat body.
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| CN109107858B (en) * | 2018-08-31 | 2021-11-26 | 广东工业大学 | Coating curing method |
| CN111413832A (en) * | 2020-04-27 | 2020-07-14 | Tcl华星光电技术有限公司 | Frame structure and preparation method and application thereof |
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| EP3327090A1 (en) * | 2012-07-18 | 2018-05-30 | President and Fellows of Harvard College | Modification of surfaces for simulataneous repellency and targeted binding of desired moieties |
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| CN1086228A (en) * | 1992-10-16 | 1994-05-04 | 科尔-麦克基化学公司 | Improve hydrophobic method by metal ion activation |
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