CN109468648A - The large-scale producing method on aluminum or aluminum alloy antifrost surface - Google Patents
The large-scale producing method on aluminum or aluminum alloy antifrost surface Download PDFInfo
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- CN109468648A CN109468648A CN201811641828.XA CN201811641828A CN109468648A CN 109468648 A CN109468648 A CN 109468648A CN 201811641828 A CN201811641828 A CN 201811641828A CN 109468648 A CN109468648 A CN 109468648A
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- aluminum
- aluminum alloy
- aluminium
- antifrost
- alloy
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Classifications
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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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/12—Light metals
- C23G1/125—Light metals aluminium
-
- 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
- B05D7/14—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 to metal, e.g. car bodies
-
- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
-
- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
- C23F1/20—Acidic compositions for etching aluminium or alloys thereof
Abstract
The invention discloses a kind of large-scale producing methods on aluminum or aluminum alloy antifrost surface, the method performs etching aluminum or aluminum alloy using the method for chemical attack in HCl solution, obtain the rough surface of micrometer structure, then using the method growing nano grade coarse structure on the surface thereof of the hydrothermal synthesis in boiling water bath, to obtain the compound binary rough surface of micro-nano, then the modification Jing Guo resinae low-surface energy substance obtains the surface with superhydrophobic characteristic.Preparation method of the invention is simple, it is low for equipment requirements, the fluorochemical molecule layer of traditional modifying and decorating is replaced with resin, greatly improves the durability of super hydrophobic surface, production cost is reduced, the super hydrophobic surface of preparation has the characteristics that automatically cleaning, antifrost, drag reduction.
Description
Technical field
The invention belongs to Treatment of Metal Surface and its technical field of modification, it is related to a kind of Super-hydrophobic aluminium or aluminum alloy surface
A kind of preparation method, and in particular to large-scale producing method on antifrost aluminum or aluminum alloy surface super hydrophobic surface.
Background technique
Aluminium alloy rich content on earth, is widely used, is mainly used in aerospace, machine-building, ship, chemical industry
Equal fields, special wellability are a kind of important interfacial phenomena of the surface of solids, moistened surface degree depend on its chemical component and
Micromorphology and geometry.Super hydrophobic surface is prepared on the metallic substrate with very wide application prospect, in daily life
Aspect super hydrophobic surface can be used for waterproof, automatically cleaning；Super hydrophobic surface can be used for alleviating metal erosion, drop in terms of marine cause
Humble bioadhesion；Super hydrophobic surface can be used for inhibiting to freeze under cryogenic, alleviate frost snow disaster harm；In terms of transport
Super hydrophobic surface can be used for reducing solid liquid interface frictional resistance, reduce energy consumption.Therefore, it is prepared on engineering material super-hydrophobic
Surface has become a very promising research hotspot.
The preparation of Super-hydrophobic aluminium sill mainly uses surface-coating technology at present, so that hydrophobic performance is not ideal enough, together
When there is also matrix and apply the problem of Percentage bound is poor, surface is without durability of interlayer.Therefore, it is still necessary to development low cost
And the preparation method on the simple Super-hydrophobic aluminium surface of preparation process.In recent years, it has had already appeared some super thin in aluminium surface preparation
The method of water.CN104499024A discloses a kind of method on anodizing building anticorrosive property Super-hydrophobic aluminium surface, the party
Aluminium flake is firstly placed on alkaline etching in sodium hydroxide solution by method, then is placed in acid etching in nitric acid solution；By above-mentioned pretreated aluminium flake point
It is not electrolysed, is then immersed in hexamethyldisilazane solution in phosphoric acid and ammonia spirit, finally take out and be put into closed container,
Heating is prepared for super hydrophobic functional film in 100 ~ 140 DEG C of constant temperature oven.Above method process conditions are more harsh, need
Big oxidation current, and need to carry out second of anodic oxidation, method is cumbersome, and process is very long, sub-cooled when post-processing
Equipment cannot achieve large area preparation；Meanwhile needing to use strong acid or weak acid in anodic oxidation, one will cause to environment
Fixed pollution.Sample is put into ferric chloride in aqueous solution by CN106399986A using chemical etching, is impregnated at room temperature, is further taken out clear
Except surface contaminants and air-dry；By chemical etching, treated that sample is placed in low-surface-energy reagent impregnates 1~2h at room temperature i.e.
Super hydrophobic surface is made.The method is although easy to produce, but does not have durability, can not be repeated as many times and use, in water droplet
After repeatedly washing away, super-hydrophobic coat can lose its special antifrost performance, thus defective.CN104947116A discloses one kind
The method for preparing aluminium alloy super-hydrophobic automatic cleaning surface using ultra-short pulse laser, this method utilize laser processing technology, use
Ultra-short pulse laser is surface-treated sample after regulating relevant technological parameter, and sample, which is put into electrically heated drying cabinet, to be dried
It is roasting, obtain superhydrophobic surface of aluminum alloy of the surface with micron-sized papillary or vesicular texture.This method is to equipment
It is required that it is high, it is at high cost, it is huge to energy consumption, it is not suitable for carrying out large-scale industrial production.In addition, the above method still office
It is limited to modify metal surface with the especially fluorine-containing substance of these traditional chemical substances, has very to human body and environment
Big potential threat and expensive, is unfavorable for environmental protection and industrialization.Therefore, develop that a kind of preparation method is simple, process warm
With at low cost, environmentally protective clean super-hydrophobic antifrost durable surface preparation method and can large area preparation have very
Important meaning.
Summary of the invention
The object of the present invention is to provide a kind of large-scale producing method on aluminum or aluminum alloy antifrost surface, the preparation methods
Simply, low for equipment requirements, the fluorochemical molecule layer of traditional modifying and decorating is replaced with resin, greatly improves super hydrophobic surface
Durability, reduce production cost, the super hydrophobic surface of preparation has the characteristics that automatically cleaning, antifrost, drag reduction.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of large-scale producing method on aluminum or aluminum alloy antifrost surface exists aluminum or aluminum alloy using the method for chemical attack
It is performed etching in HCl solution, obtains the rough surface of micrometer structure, then using the method for the hydrothermal synthesis in boiling water bath at it
Then growing nano grade coarse structure on surface passes through the low surface of resinae to obtain the compound binary rough surface of micro-nano
The modification of energy substance obtains the surface with superhydrophobic characteristic.Specific implementation step is as follows:
(1) aluminium flake or aluminium alloy plate that sand paper was polished successively are cleaned with acetone and EtOH Sonicate at room temperature, then existed
The oxide layer and pollutant that aluminum or aluminum alloy surface is removed in 40 ~ 80 DEG C of dilute phosphoric acid solution, wash and dry；
(2) using HCl as etchant solution, by step (1), treated, and aluminum or aluminum alloy etches 3 ~ 5min at room temperature, obtains
Aluminum or aluminum alloy surface with step-like micrometer structure；
(3) for the aluminum or aluminum alloy for obtaining step (2) hydrothermal synthesis 2 ~ 4 hours in 100 DEG C of constant temperature boiling water, preparation has micron
With the aluminum or aluminum alloy surface of the dual coarse structure of nanometer；
(4) aluminium is arrived using the modification of resinae low-surface-energy material, drying in the aluminum or aluminum alloy surface for obtaining step (3)
Or the super-hydrophobic durable surface of aluminium alloy.
In the present invention, the ladder-like available convex-concave of etching is carried out to aluminum or aluminum alloy using the method for step (2) and is interlocked
Coarse structure, the width of each step-like structure of the structure is about 5 ~ 10 μm.It can be first using the method for step (3)
The different pile-like configuration of homoepitaxial height in layer surface, the structure are Nano bars of alumina.
In the present invention, resinae low-surface-energy material is any one in the resinous materials such as nontoxic, environmentally friendly rosin, paraffin
The ethanol solution of kind, concentration are 0.5 ~ 1wt%, and coating layer thickness is 1 μm or less.
In the present invention, the concentration of HCl solution is 3 ~ 4M.
Compared with the prior art, the present invention has the advantage that
1, preparation method of the present invention is simple, and without the equipment of complex and expensive, process conditions are mild, does not need sub-cooled equipment,
Easily prepared by large area.
2, prepared by the present invention superoleophobic and super hydrophobic surface is greater than 150 ° to the static contact angle of water and oil, the rolling to water
Angle is moved less than 3 degree, may make aluminum material surface that there is fabulous antifrost performance, be able to suppress the formation of freezing point at low temperature.
3, the aluminium base that the present invention uses can be technical pure aluminum or aluminum alloy, and size does not require particularly, and not
It is limited by lattice, quality is easily controllable, uniform nanostructure easy to form and super-hydrophobic coat.
4, the super hydrophobic surface obtained by the present invention has good durability, and can be with mechanical resistant metamorphosis, can
Bending is deformed without destroying its surface texture and ultra-hydrophobicity.
5, the super-hydrophobic surface coating is ultra-thin, and thickness can be controlled in 1 μm hereinafter, may be applicable to the gold of control thickness
Belong to material.
6, metallic aluminium and its alloy surface prepared by the present invention have extremely stable superhydrophobic characteristic and durability, more
There is good purposes in terms of kind:
(a) metallic aluminium prepared by the present invention or aluminum alloy surface have super-hydrophobic feature, can be used for the anti-caking of metallic aluminum surface
Frost and automatically cleaning, can be used as the home electric appliance materials such as refrigerator, refrigerator-freezer, air-conditioning, reduce frosting, icing phenomenon, can be with for open air
Ice and snow freeze disaster is reduced to lose caused by transmission of electricity communicating circuit, air transportation.
(b) the super thin drag reduction that metallic aluminium prepared by the present invention or aluminum alloy surface can be used between MEMS device moving interface,
Improve the service life of MEMS device sensitive structure.
(c) metallic aluminium prepared by the present invention or aluminum alloy surface can be used in water transport or underwater submarine on, can reduce
The resistance of water improves travel speed, reduces noise and prevents from corroding.
(d) super hydrophobic surface prepared by the present invention has durability, erosion-resisting performance, and super hydrophobic surface is solid securely,
Aluminum alloy frame for building external can reduce cleaning cost, prolong the service life.
Detailed description of the invention
Fig. 1 is the SEM figure that fine aluminium reacts after 4min in hydrochloric acid solution in embodiment 4；
Fig. 2 is the SEM figure that fine aluminium reacts after 2h in water heating kettle in embodiment 4.
Specific embodiment
Below with reference to embodiment, further description of the technical solution of the present invention, and however, it is not limited to this, all right
Technical solution of the present invention is modified or replaced equivalently, and without departing from the spirit and scope of the technical solution of the present invention, should all be contained
Lid is within the protection scope of the present invention.
Embodiment 1:
The rectangle fine aluminium piece of 6cm × 2cm is uniformly polished using 800 mesh sand paper, is then carried out with 1700 mesh sand paper
Even polishing.It uses acetone and ethanol solution to be respectively cleaned by ultrasonic respectively 10 minutes the aluminium flake after polishing, and is cleaned and done with deionized water
Only, by the aluminium flake handled well in the HCl solution of 3M chemical etching 3min at room temperature.After aluminium flake is taken out in deionized water
Ultrasonic cleaning 5 minutes, the alumina particle of removal surface attachment.Then aluminium flake is put into the air-tight bottle for filling deionized water,
Water bath with thermostatic control heats 100 DEG C, and heating time is 2 hours.Aluminium flake is taken out, is cleaned by ultrasonic 5 minutes in deionized water.Later,
It is impregnated 30 minutes in pre-configured 0.5wt% rosin ethanol solution, is washed with deionized water, is put into constant temperature drying box
It is dry.The contact angle for detecting aluminium surface and water is 158 °, and water droplet is easily rolled in aluminium surface, and roll angle is less than 5 °.
Embodiment 2:
The rectangle fine aluminium piece of 6cm × 2cm is uniformly polished using 800 mesh sand paper, is then carried out with 1700 mesh sand paper
Even polishing.It uses acetone and ethanol solution to be respectively cleaned by ultrasonic respectively 10 minutes the aluminium flake after polishing, and is cleaned and done with deionized water
Only, by the aluminium flake handled well in the HCl solution of 3M chemical etching 5min at room temperature.After aluminium flake is taken out, in deionized water
Middle ultrasonic cleaning 5 minutes, the alumina particle of removal surface attachment.Aluminium flake is then put into the air-tight bottle for filling deionized water
In, water bath with thermostatic control heats 100 DEG C, and heating time is 2 hours.Aluminium flake is taken out, is cleaned by ultrasonic 5 minutes in deionized water.It
Afterwards, it is impregnated 30 minutes in pre-configured 1wt% paraffin ethanol solution, is washed with deionized water, is put into constant temperature drying box
It is dry.The contact angle for detecting aluminium surface and water is 160 °, and water droplet is easily rolled in aluminium surface, and roll angle is less than 5 °.
Embodiment 3:
The rectangle Al7075 alloy of 6cm × 2cm is uniformly polished using 800 mesh sand paper, then with 1700 mesh sand paper into
Row uniform grinding.Acetone and ethanol solution is used respectively to be cleaned by ultrasonic respectively 10 minutes the aluminium flake after polishing, and clear with deionized water
Wash clean, by the aluminium flake handled well in the HCl solution of 4M chemical etching 5min at room temperature.In deionization after aluminium flake is taken out
It is cleaned by ultrasonic 5 minutes in water, the alumina particle of removal surface attachment.Aluminium flake is then put into the air-tight bottle for filling deionized water
In, water bath with thermostatic control heats 100 DEG C, and heating time is 2 hours.Aluminium flake is taken out, is cleaned by ultrasonic 5 minutes in deionized water.It
Afterwards, it is impregnated 30 minutes in pre-configured 0.5wt% rosin ethanol solution, is washed with deionized water, is put into constant temperature drying box
Middle drying.The contact angle for detecting aluminium surface and water is 164 °, and water droplet is easily rolled in aluminium surface, and roll angle is less than 5 °.
Embodiment 4:
The rectangle fine aluminium piece of 6cm × 2cm is uniformly polished using 800 mesh sand paper, is then carried out with 1700 mesh sand paper
Even polishing.It uses acetone and ethanol solution to be respectively cleaned by ultrasonic respectively 10 minutes the aluminium flake after polishing, and is cleaned and done with deionized water
Only, by the aluminium flake handled well, chemical etching 4min, surface topography are as shown in Figure 1 at room temperature in the HCl solution of 4M.By aluminium
Piece is cleaned by ultrasonic 5 minutes in deionized water after taking out, the alumina particle of removal surface attachment.Then aluminium flake is put into and is filled
In the air-tight bottle of deionized water, water bath with thermostatic control heats 100 DEG C, and heating time is 2 hours.Aluminium flake is taken out, in deionized water
Ultrasonic cleaning 5 minutes.Later, it impregnates 30 minutes, is washed with deionized water in pre-configured 0.5wt% rosin ethanol solution
Only, it is put into constant temperature drying box dry.The contact angle for detecting aluminium surface and water is 164 °, and water droplet is easily rolled in aluminium surface, rolling
Move angle less than 5 °, as shown in Figure 2.
Claims (4)
1. a kind of large-scale producing method on aluminum or aluminum alloy antifrost surface, it is characterised in that the method comprises the following steps:
(1) aluminium flake or aluminium alloy plate that sand paper was polished successively are cleaned with acetone and EtOH Sonicate at room temperature, then existed
The oxide layer and pollutant that aluminum or aluminum alloy surface is removed in 40 ~ 80 DEG C of dilute phosphoric acid solution, wash and dry；
(2) using HCl as etchant solution, by step (1), treated, and aluminum or aluminum alloy etches 3 ~ 5min at room temperature, obtains
Aluminum or aluminum alloy surface with step-like micrometer structure；
(3) for the aluminum or aluminum alloy for obtaining step (2) hydrothermal synthesis 2 ~ 4 hours in 100 DEG C of constant temperature boiling water, preparation has micron
With the aluminum or aluminum alloy surface of the dual coarse structure of nanometer；
(4) aluminium is arrived using the modification of resinae low-surface-energy material, drying in the aluminum or aluminum alloy surface for obtaining step (3)
Or the super-hydrophobic durable surface of aluminium alloy.
2. the large-scale producing method on aluminum or aluminum alloy antifrost according to claim 1 surface, it is characterised in that described
Resinae low-surface-energy material is the ethanol solution of rosin or paraffin.
3. the large-scale producing method on aluminum or aluminum alloy antifrost according to claim 1 surface, it is characterised in that described
The concentration of the ethanol solution of rosin or paraffin is 0.5 ~ 1wt%, and coating layer thickness is 1 μm or less.
4. the large-scale producing method on aluminum or aluminum alloy antifrost according to claim 1 surface, it is characterised in that described
The concentration of HCl solution is 3 ~ 4M.
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| CN201811641828.XA CN109468648A (en) | 2018-12-29 | 2018-12-29 | The large-scale producing method on aluminum or aluminum alloy antifrost surface |
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Cited By (4)
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|---|---|---|---|---|
| CN110756414A (en) * | 2019-11-06 | 2020-02-07 | 中国民用航空总局第二研究所 | High-performance super-hydrophobic metal surface and preparation method thereof |
| CN114622203A (en) * | 2022-02-17 | 2022-06-14 | 大连海事大学 | Preparation method of bionic self-cleaning super-hydrophobic anti-icing coating |
| CN114635135A (en) * | 2022-02-17 | 2022-06-17 | 大连海事大学 | Preparation method of bionic step structure surface with anti-icing performance |
| CN114877570A (en) * | 2022-06-02 | 2022-08-09 | 桂林电子科技大学 | Electric automobile heat pump type air-conditioning automobile external heat exchanger fin and preparation method of super-hydrophobic coating for defrosting thereof |
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| CN114877570A (en) * | 2022-06-02 | 2022-08-09 | 桂林电子科技大学 | Electric automobile heat pump type air-conditioning automobile external heat exchanger fin and preparation method of super-hydrophobic coating for defrosting thereof |
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