CN108997888A - A kind of preparation method of super-hydrophobic drag-reducing coating - Google Patents
A kind of preparation method of super-hydrophobic drag-reducing coating Download PDFInfo
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- CN108997888A CN108997888A CN201810877690.7A CN201810877690A CN108997888A CN 108997888 A CN108997888 A CN 108997888A CN 201810877690 A CN201810877690 A CN 201810877690A CN 108997888 A CN108997888 A CN 108997888A
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- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
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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
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/582—No clear coat specified all layers being cured or baked together
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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The present invention relates to a kind of preparation methods of super-hydrophobic drag-reducing coating, by the way that the method for epoxy matrix and hydrophobic granule alternating spray is prepared for a kind of super-hydrophobic drag-reducing coating in substrate surface, with excellent ultra-hydrophobicity, Static water contact angles reach 150 ° or more, and roll angle is less than 10 °.Coating preparation is subjected to resistance reducing performance test on rheometer rotor, drag reducing efficiency can achieve 25% or more.Super-hydrophobic coat of the invention has good ultra-hydrophobicity, can be used for the speed-raising of sail device drag reduction；Preparation method is simple, and fabrication cycle is short, can be coated in any substrate and keep ultra-hydrophobicity, and have preferable caking property；Super-hydrophobic coat has preferable wear-resisting property, is still able to maintain ultra-hydrophobicity after sand paper is polished for a plurality of times.
Description
Technical field
The invention belongs to organic composite coating field of material technology, are related to a kind of preparation method of super-hydrophobic drag-reducing coating.
Background technique
With the continuous propulsion of global integration, the exchange and cooperation in the fields such as economy, culture, military affairs between various countries are increasingly
Closely, marine transportation is increasingly becoming the major way of big country's communications and transportation, each state all start to reinforce the exploitation to resource waterborne with
It utilizes, energy consumption is serious and reserves are increasingly reduced, and the exploitation of new energy is more difficult at the same time, therefore how effective sharp
With the existing energy, the consumption for reducing the energy just becomes particularly significant.
The large size submarine navigation devices such as sailing device on water and submarine, torpedo such as freighter, aircraft carrier, research ship are in ocean Air China
When row, the speed of a ship or plane and power consumption rate are to evaluate the important parameter of its performance superiority and inferiority, speed of service size and energy consumption height in addition to by
To outside the influence of engine of boat and ship performance quality, suffered drag size is depended primarily on.The frictional resistance for reducing ship, for mentioning
The route speed on high naval vessel, the fight capability for reinforcing naval vessel and reduction energy consumption, suffer from highly important meaning.
Reducing frictional resistance between hull and water flow is that can save fuel and the energy first, can followed by increase navigation
Speed has vital meaning in military field.In addition, energy consumption caused by during navigation can be with corresponding
Noise and vibration, the application of draft reduction material also can bring positive effect for vibration and noise reducing.At present for submarine navigation device, closely
It is influenced over year by bionics, in terms of the design of all kinds of traffic carriers and material application, people start to tend to bionical
Design Thinking.So the direction of research is focused primarily upon super-hydrophobic drag reduction by scientists from all over the world in terms of aircraft drag reduction under water
Method.
Super hydrophobic surface drag reduction technology is from the research to lotus leaf surface self-cleaning function.Biologist and material scholar
By observing and studying the discovery of the plant leaf blades surface micro-structure such as lotus leaf, taro leaves, the micron order bulge-structure on surface and receive
The wax-like villus generation synergistic effect of meter level, which forms rough mastoid process or microtrabeculae etc., has great surface coarseness structure,
And mastoid process surface texture is also and Non-smooth surface, is covered to form wax like surface by the hydrophobic alkane structure of long-chain.It is seen by scanning electron microscope
Structure is examined it is found that water droplet drippage makes to drop down at the top of raised micro-structure, greatly in these leaf surfaces with multilevel structure of lotus leaf
Part is contacted with air, and the blade surface of solids only has fraction and drop contact, in this case, lesser solid-liquid contact face
Cause adhesion strength insufficient, water droplet is difficult in superficial residence, to roll, since hydrone belongs to highly polar molecule, is being rolled
Lotus leaf surface contaminant particle, which can be taken away, during dynamic reaches self-cleaning effect.People are prepared various by imitation lotus leaf surface
Hydrophobic/super hydrophobic material, and it is applied to surface drag reduction field, it is bionical hydrophobic/super to form a kind of emerging drag reduction force method
Hydrophobic table and drag reduction.1999, Watanabe etc. using modified acrylic acid be prepared for a kind of fluothane hydrocarbon (Fluid Mech,
1999,38 (1), 225), it is applied to tube wall as hydrophobic material and studies its drag-reduction effect the experiment has found that is managed when laminar flow
The surface drag reducing efficiency of wall is 14%.This seminar has also carried out the work for preparing super-hydrophobic coat.Zhang Qiuyu et al. utilizes sulfydryl-
Alkene clicking chemistry method designs a kind of fluorine silicon resin to prepare super-hydrophobic/bis- open coat (CN 2017107386707), is knitting
Using having obtained preferable self-cleaning effect on object, but the research in terms of super-hydrophobic drag reduction is not carried out on a planar base also.
Summary of the invention
Technical problems to be solved
In order to avoid the shortcomings of the prior art, the present invention proposes a kind of preparation method of super-hydrophobic drag-reducing coating, it is
The preparation method of super-hydrophobic drag-reducing coating based on composite coating technology is mainly realized in substrate using composite coating technology super
Drag reduction by hydrophobic coating performance.
Technical solution
A kind of preparation method of super-hydrophobic drag-reducing coating, it is characterised in that steps are as follows:
The preparation of step 1, epoxy prepolymer: under nitrogen protection, polyfunctionality mercaptan chemical combination is sequentially added in the reactor
Object and alkenyl epoxy mixture, solvent A and base catalyst carry out sulfydryl-alkene addition reaction at normal temperature, obtain ring after 6~10h
Oxygen prepolymer；The mass ratio of the polyfunctionality mercaptan compound and alkenyl epoxy mixture, solvent A and base catalyst is 1:1
~5:0.01~0.05；In the polyfunctionality mercaptan compound and alkenyl epoxy mixture, polyfunctionality mercaptan compound with
Alkenyl epoxy is mixed according to sulfydryl with epoxy group molar ratio 1:1；
The alkenyl epoxy is glycidyl methacrylate；
The preparation of step 2, resin matrix: epoxy prepolymer and amine based curative 100:20~50 in mass ratio are mixed
It closes, and stirs to get resin matrix；
The preparation of step 3, super-hydrophobic drag-reducing coating: by resin matrix and hydrophobic granule suspension interval layering spraying 6~
It 10 times, is placed into after solidifying 2~6h in 100~180 DEG C of convection oven and obtains super-hydrophobic drag-reducing coating；
When spraying, first layer is resin matrix in substrate, and the last layer is hydrophobic granule suspension；Spray resin matrix or
It is required to spray next layer again after solvent volatilizees completely after hydrophobic granule suspension；
The hydrophobic granule suspension are as follows: be mixed to get with hydrophobic granule and 1:10~20 in mass ratio solvent B
Hydrophobic granule suspension.
The solvent A is acetone, tetrahydrofuran, N, N-Methyl pyrrolidone or n,N-dimethylacetamide.
The polyfunctionality mercaptan compound is glycerol tri-thiol propionic ester, trimethylolpropane tris sulfydryl propyl ester, different
Six mercaptopropionic acid ester of cyanurate tri-thiol carboxylate, four mercaptopropionic acid ester of pentaerythrite or dipentaerythritol.
The base catalyst is dimethylphenylphosphine, tributylphosphine or diethylenetriamine alkali compounds.
The amine based curative is 4,4'- dithiodianiline, dicyandiamide, modified dicyandiamine, carbamide derivative, imidazoles
One or more of combinations of derivative.
The hydrophobic granule is the fluorinated silica of 100~2000nm of partial size, ptfe micropowder and gathers inclined fluorine
Ethylene micro mist.
The solvent B is dehydrated alcohol, acetone, tetrahydrofuran or DMAC N,N' dimethyl acetamide.
Beneficial effect
The preparation method of a kind of super-hydrophobic drag-reducing coating proposed by the present invention, by replacing epoxy matrix with hydrophobic granule
The method of spraying is prepared for a kind of super-hydrophobic drag-reducing coating in substrate surface, has excellent ultra-hydrophobicity, Static water contact
Angle reaches 150 ° or more, and roll angle is less than 10 °.Coating preparation is subjected to resistance reducing performance test, drag reduction on rheometer rotor
Rate can achieve 25% or more.
Advantages of the present invention:
1. super-hydrophobic coat of the invention has good ultra-hydrophobicity, it can be used for the speed-raising of sail device drag reduction；
2. super-hydrophobic coat preparation method of the invention is simple, fabrication cycle is short, can be coated in any substrate and keep
Ultra-hydrophobicity, and there is preferable caking property；
3. super-hydrophobic coat of the invention has preferable wear-resisting property, still it is able to maintain after sand paper is polished for a plurality of times super thin
Aqueous energy.
Detailed description of the invention
Fig. 1: super-hydrophobic drag-reducing coating surface micro-structure electromicroscopic photograph；
Fig. 2: contact angle after super-hydrophobic drag-reducing coating friction.
Specific embodiment
Now in conjunction with embodiment, attached drawing, the invention will be further described:
A kind of preparation method of super-hydrophobic drag-reducing coating of the present invention, step include the preparation of epoxy prepolymer, tree
The preparation of aliphatic radical body and the preparation of super-hydrophobic drag-reducing coating, it is characterised in that: the preparation method of the epoxy prepolymer is:
Under nitrogen protection, solvent A, polyfunctionality mercaptan compound, alkenyl epoxy and base catalyst are sequentially added in the reactor normal
Temperature is lower to carry out sulfydryl-alkene addition reaction, obtains epoxy prepolymer after 6~10h, wherein polyfunctionality mercaptan compound and alkenyl ring
Oxygen is mixed according to sulfydryl with epoxy group molar ratio 1:1, polyfunctionality mercaptan compound and alkenyl epoxy mixture, organic
The mass ratio of solvent and base catalyst is 1:1~5:0.01~0.05；The preparation method of the resin matrix is: epoxy is pre-
Polymers is mixed with amine based curative 100:20~50 in mass ratio, and is uniformly mixing to obtain resin matrix；Described is super thin
The preparation method of water drag-reducing coating: by resin matrix even application in substrate, primary dredge is sprayed again after solvent volatilization completely
Particle water suspension then sprays one layer of resin matrix after the volatilization completely of suspension solvent, spray repeatedly resin matrix and
After hydrophobic granule suspension 6 to 10 times, it is placed into after solidifying 2~6h in 100~180 DEG C of convection oven and obtains super-hydrophobic drag reduction
Coating.
The preparation method of a kind of super-hydrophobic drag-reducing coating, it is characterised in that: the solvent A is acetone, tetrahydro
Furans, N, N-Methyl pyrrolidone, n,N-dimethylacetamide；
A kind of preparation method of super-hydrophobic drag-reducing coating, it is characterised in that: the polyfunctionality mercaptan chemical combination
Object is glycerol tri-thiol propionic ester, trimethylolpropane tris sulfydryl propyl ester, isocyanuric acid tri-thiol carboxylate, four mercapto of pentaerythrite
Base propionic ester, six mercaptopropionic acid ester of dipentaerythritol.
The preparation method of a kind of super-hydrophobic drag-reducing coating, it is characterised in that: the alkenyl epoxy is methyl-prop
Olefin(e) acid ethylene oxidic ester.
The preparation method of a kind of super-hydrophobic drag-reducing coating, it is characterised in that: the base catalyst is dimethyl
The alkali compounds such as Phenylphosphine, tributylphosphine, diethylenetriamine.
The preparation method of a kind of super-hydrophobic drag-reducing coating, it is characterised in that: the amine based curative is 4,4'-
Dithiodianiline, one or more of combinations of dicyandiamide, modified dicyandiamine, carbamide derivative, imdazole derivatives.
The preparation method of a kind of super-hydrophobic drag-reducing coating, it is characterised in that: the hydrophobic granule suspension
Preparation method is to mix hydrophobic granule with 1:10~20 in mass ratio solvent B, and ultrasound makes it be uniformly dispersed.
The preparation method of the hydrophobic granule suspension, it is characterised in that: the hydrophobic granule be partial size 100~
The fluorinated silica of 2000nm, ptfe micropowder and Kynoar micro mist.
The preparation method of the hydrophobic granule suspension, it is characterised in that: the solvent B be dehydrated alcohol, acetone,
Tetrahydrofuran, DMAC N,N' dimethyl acetamide etc..
Comparative example 1
It selects common hydrophobic coating (polyurethane coating), 105 ° of contact angle.
Drag reduction test: BROOKFIELD R/S type rheometer is selected to carry out drag reduction test.Hydrophobic coating is coated in diameter
On 50mm rotor discs, with gap of the bottom plate at a distance of 0.2mm in be full of water, test torque under revolving speed 1000rpm/min.
The hydrophobic coating of comparative example 1 the results show that torque be 1.18 μ Nm.It is not coated with the smooth surface rotor circle of any coating
Torque of the disk under same test condition is 1.22 μ Nm, according to the calculation formula of drag reducing efficiency:
DR=1-Msu/Msm,
Wherein, MsuAnd MsmRespectively represent the torque value of coating and the torque value of smooth surface rotor.Therefore common hydrophobic coating
Drag reducing efficiency is 3.2%.
Embodiment 1
Under nitrogen protection, 50g acetone, 24.2g trimethylolpropane tris (3- mercaptopropionic acid) are sequentially added in the reactor
Ester, 25.8g glycidyl methacrylate and 0.5g dimethyl phosphniline carry out sulfydryl-alkene addition reaction at normal temperature, after 6h
Obtain epoxy prepolymer solution.Then by above-mentioned epoxy prepolymer solution and 25g 4,4'- dithiodianiline in mass ratio into
Row mixing, and it is uniformly mixing to obtain resin matrix.10g fluorinated silicon dioxide (100nm) is mixed with 100g ethyl alcohol later,
And ultrasound makes it be uniformly dispersed.On the glass sheet by resin matrix even application finally, one is sprayed again after solvent volatilization completely
Secondary hydrophobic granule suspension after the volatilization completely of suspension solvent, then sprays one layer of resin matrix, sprays resin base repeatedly
After body and hydrophobic granule suspension 6 times, it is placed into after solidifying 4h in 140 DEG C of convection oven and obtains super-hydrophobic drag-reducing coating.
Drag reduction test: BROOKFIELD R/S type rheometer is selected to carry out drag reduction test.Super-hydrophobic coat is coated in straight
On diameter 50mm rotor discs, with gap of the bottom plate at a distance of 0.2mm in be full of water, test torque under revolving speed 1000rpm/min.
The test result for the super-hydrophobic coat for implementing 1 is shown, torque is 0.96 μ Nm, is not coated with the smooth surface of any coating
Torque of the rotor discs under same test condition is 1.22 μ Nm, according to the calculation formula of drag reducing efficiency:
DR=1-Msu/Msm,
Wherein, MsuAnd MsmRespectively represent the torque value of coating and the torque value of smooth surface rotor.Therefore common hydrophobic coating
Drag reducing efficiency is 21.3%.
Embodiment 2
Under nitrogen protection, sequentially add in the reactor 125g tetrahydrofuran, four mercaptopropionic acid ester of 23.1g pentaerythrite,
26.9g glycidyl methacrylate and 1.25g tributylphosphine carry out sulfydryl-alkene addition reaction at normal temperature, obtain after 8h
Epoxy prepolymer solution.Then above-mentioned epoxy prepolymer solution is mixed with 20g modified dicyandiamine, and be uniformly mixing to obtain
Resin matrix.10g ptfe micropowder (1000nm) is mixed with 150g tetrahydrofuran later, and ultrasound makes its dispersion
Uniformly.On the glass sheet by resin matrix even application finally, a hydrophobic granule is sprayed again after solvent volatilization completely to suspend
Liquid, after the volatilization completely of suspension solvent, then sprays one layer of resin matrix, sprays resin matrix repeatedly and hydrophobic granule is outstanding
After supernatant liquid 8 times, it is placed into after solidifying 2h in 180 DEG C of convection oven and obtains super-hydrophobic drag-reducing coating.
Drag reduction test: BROOKFIELD R/S type rheometer is selected to carry out drag reduction test.Super-hydrophobic coat is coated in straight
On diameter 50mm rotor discs, with gap of the bottom plate at a distance of 0.2mm in be full of water, test torque under revolving speed 1000rpm/min.
The test result for the super-hydrophobic coat for implementing 1 is shown, torque is 0.92 μ Nm, is not coated with the smooth surface of any coating
Torque of the rotor discs under same test condition is 1.22 μ Nm, according to the calculation formula of drag reducing efficiency:
DR=1-Msu/Msm,
Wherein, MsuAnd MsmRespectively represent the torque value of coating and the torque value of smooth surface rotor.Therefore common hydrophobic coating
Drag reducing efficiency is 24.6%.
Embodiment 3
Under nitrogen protection, 250g n,N-dimethylacetamide, 23.9g dipentaerythritol six are sequentially added in the reactor
It is anti-that mercaptopropionic acid ester, 26.1g glycidyl methacrylate and 2.5g diethylenetriamine carry out sulfydryl-alkene addition at normal temperature
It answers, epoxy prepolymer solution is obtained after 10h.Then above-mentioned epoxy prepolymer solution is mixed with 10g imdazole derivatives, and
It is uniformly mixing to obtain resin matrix.Later by 10g Kynoar micro mist (2000nm) and 200g DMAC N,N' dimethyl acetamide into
Row mixing, and ultrasound makes it be uniformly dispersed.On the glass sheet by resin matrix even application finally, after solvent volatilization completely again
A hydrophobic granule suspension is sprayed, after the volatilization completely of suspension solvent, then one layer of resin matrix is sprayed, sprays repeatedly
After resin matrix and hydrophobic granule suspension 10 times, it is placed into after solidifying 6h in 100 DEG C of convection oven and obtains super-hydrophobic drag reduction
Coating.
Drag reduction test: BROOKFIELD R/S type rheometer is selected to carry out drag reduction test.Super-hydrophobic coat is coated in straight
On diameter 50mm rotor discs, with gap of the bottom plate at a distance of 0.2mm in be full of water, test torque under revolving speed 1000rpm/min.
The test result for the super-hydrophobic coat for implementing 1 is shown, torque is 0.88 μ Nm, is not coated with the smooth surface of any coating
Torque of the rotor discs under same test condition is 1.22 μ Nm, according to the calculation formula of drag reducing efficiency:
DR=1-Msu/Msm,
Wherein, MsuAnd MsmRespectively represent the torque value of coating and the torque value of smooth surface rotor.Therefore common hydrophobic coating
Drag reducing efficiency is 27.9%.
Claims (7)
1. a kind of preparation method of super-hydrophobic drag-reducing coating, it is characterised in that steps are as follows:
The preparation of step 1, epoxy prepolymer: under nitrogen protection, sequentially add in the reactor polyfunctionality mercaptan compound with
Alkenyl epoxy mixture, solvent A and base catalyst, carry out sulfydryl-alkene addition reaction at normal temperature, and it is pre- to obtain epoxy after 6~10h
Polymers；The mass ratio of the polyfunctionality mercaptan compound and alkenyl epoxy mixture, solvent A and base catalyst is 1:1~5:
0.01~0.05；In the polyfunctionality mercaptan compound and alkenyl epoxy mixture, polyfunctionality mercaptan compound and alkenyl
Epoxy is mixed according to sulfydryl with epoxy group molar ratio 1:1；
The alkenyl epoxy is glycidyl methacrylate；
The preparation of step 2, resin matrix: epoxy prepolymer is mixed with amine based curative 100:20~50 in mass ratio,
And stir to get resin matrix；
The preparation of step 3, super-hydrophobic drag-reducing coating: resin matrix and the layering of hydrophobic granule suspension interval are sprayed 6~10 times,
It is placed into after solidifying 2~6h in 100~180 DEG C of convection oven and obtains super-hydrophobic drag-reducing coating；
When spraying, first layer is resin matrix in substrate, and the last layer is hydrophobic granule suspension；Spray resin matrix or hydrophobic
It is required to spray next layer again after solvent volatilizees completely after particle suspension liquid；
The hydrophobic granule suspension are as follows: with 1:10~20 in mass ratio solvent B be mixed to get with hydrophobic granule hydrophobic
Particle suspension liquid.
2. the preparation method of super-hydrophobic drag-reducing coating according to claim 1, it is characterised in that: the solvent A is acetone,
Tetrahydrofuran, N, N-Methyl pyrrolidone or DMAC N,N' dimethyl acetamide.
3. the preparation method of super-hydrophobic drag-reducing coating according to claim 1, it is characterised in that: the polyfunctionality mercaptan
Compound is glycerol tri-thiol propionic ester, trimethylolpropane tris sulfydryl propyl ester, isocyanuric acid tri-thiol carboxylate, pentaerythrite
Six mercaptopropionic acid ester of four mercaptopropionic acid esters or dipentaerythritol.
4. the preparation method of super-hydrophobic drag-reducing coating according to claim 1, it is characterised in that: the base catalyst is two
Aminomethyl phenyl phosphine, tributylphosphine or diethylenetriamine alkali compounds.
5. the preparation method of super-hydrophobic drag-reducing coating according to claim 1, it is characterised in that: the amine based curative is
4,4'- dithiodianilines, one or more of combinations of dicyandiamide, modified dicyandiamine, carbamide derivative, imdazole derivatives.
6. the preparation method of super-hydrophobic drag-reducing coating according to claim 1, it is characterised in that: the hydrophobic granule is grain
The fluorinated silica of 100~2000nm of diameter, ptfe micropowder and Kynoar micro mist.
7. the preparation method of super-hydrophobic drag-reducing coating according to claim 1, it is characterised in that: the solvent B is anhydrous
Ethyl alcohol, acetone, tetrahydrofuran or DMAC N,N' dimethyl acetamide.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111737836A (en) * | 2020-06-30 | 2020-10-02 | 扬州大学 | Dynamic and static cavity flow micro-groove-super-hydrophobic coupling drag reduction design method |
| CN113214703A (en) * | 2021-05-07 | 2021-08-06 | 苏州大学 | Water-based photocuring super-hydrophobic coating and preparation method and application thereof |
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| CN107254237A (en) * | 2017-07-27 | 2017-10-17 | 弘大科技（北京）股份公司 | A kind of coating being made up of superelevation roughness particle |
| CN107556477A (en) * | 2017-08-25 | 2018-01-09 | 西北工业大学 | The preparation method of fluorine silicon resin and its self-repairing super hydrophobic coating based on click chemistry |
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| US3973510A (en) * | 1974-09-09 | 1976-08-10 | The United States Of America As Represented By The Secretary Of The Navy | Submersible object having drag reduction and method |
| CN106563626A (en) * | 2016-10-31 | 2017-04-19 | 南京理工大学 | Preparation method of super-hydrophobic resistance-reducing coating |
| CN107254237A (en) * | 2017-07-27 | 2017-10-17 | 弘大科技（北京）股份公司 | A kind of coating being made up of superelevation roughness particle |
| CN107556477A (en) * | 2017-08-25 | 2018-01-09 | 西北工业大学 | The preparation method of fluorine silicon resin and its self-repairing super hydrophobic coating based on click chemistry |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111737836A (en) * | 2020-06-30 | 2020-10-02 | 扬州大学 | Dynamic and static cavity flow micro-groove-super-hydrophobic coupling drag reduction design method |
| CN111737836B (en) * | 2020-06-30 | 2021-06-22 | 扬州大学 | Dynamic and static cavity flow micro-groove-super-hydrophobic coupling drag reduction design method |
| CN113214703A (en) * | 2021-05-07 | 2021-08-06 | 苏州大学 | Water-based photocuring super-hydrophobic coating and preparation method and application thereof |
| CN113214703B (en) * | 2021-05-07 | 2022-04-22 | 苏州大学 | Water-based photocuring super-hydrophobic coating and preparation method and application thereof |
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