CN104630872A - Aluminum alloy surface nano hole processing method and method for bonding aluminum alloy to plastic - Google Patents
Aluminum alloy surface nano hole processing method and method for bonding aluminum alloy to plastic Download PDFInfo
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- CN104630872A CN104630872A CN201510089137.3A CN201510089137A CN104630872A CN 104630872 A CN104630872 A CN 104630872A CN 201510089137 A CN201510089137 A CN 201510089137A CN 104630872 A CN104630872 A CN 104630872A
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Abstract
The invention relates to the technical field of aluminum alloy processing, and particularly relates to an aluminum alloy surface nano hole processing method and a method for bonding aluminum alloy to plastic. The aluminum alloy surface nano hole processing method comprises the following steps: A, pre-processing an aluminum alloy surface with alkali liquor; B, putting the aluminum alloy which is taken as an anode into electrolyte containing 1.2-4mol/L hydrochloric acid, 0.5-1.2mol/L sulfuric acid, 0.6-1mol/L oxalic acid and 0.5-0.8mol/L citric acid to perform direct-current electrochemical corrosion so as to form nano holes in the surface of the aluminum alloy surface by corrosion. According to the aluminum alloy surface nano hole processing method, direct-current electrochemical corrosion is performed on the aluminum alloy by utilizing the electrolyte containing inorganic acid components of hydrochloric acid, sulfuric acid, oxalic acid and citric acid as well as a corrosion inhibitor, so that the processed nano holes are uniformly and consistently distributed; moreover, the processing is quick and efficient and an environmental pollution problem is eliminated, so that the aluminum alloy surface nano hole processing method is relatively beneficial to integrally bonding an aluminum alloy structure with the plastic.
Description
Technical field:
The present invention relates to aluminum alloy processing technology field, particularly aluminum alloy surface nanoporous treatment process and the method that is combined with plastic cement.
Background technology:
Nanometer forming technique corrodes nano aperture with chemistry or electrochemical means metallic surface exactly, by selecting special etching liquid, makes metallic surface occur being similar to the micro-nano porous structure of karang shape.Then processed metalwork is put in mould, carry out Inset ejection molding, directly plastic cement component injection is solidified to metallic surface, by the mechanical locking action of micro-nano porous structure, plastic cement and metallic surface closely to be combined.Finally, all modifications in metallic surface can be carried out by the moulding taken out in mould to process.Metallic surface is through so micro-nano process, and the plane that can realize metal and plastic cement bonds, and eliminates the bonding process of metal and plastic cement.This nanometer forming technique will be applied to metal and combine with the integrated of plastic cement.In the micro-nano treating processes of existing aluminum alloy surface, containing the organic composition of a large amount of environmental pollution in the etching liquid of use, the efficiency and the effect that process nano aperture are also general.
Summary of the invention:
The object of the invention is to provide for the deficiencies in the prior art a kind of aluminum alloy surface nanoporous treatment process that effectively can solve problem of environmental pollution, improve nanoporous working (machining) efficiency, improve processing quality, also provide a kind of and effectively can solve problem of environmental pollution, improve nanoporous working (machining) efficiency, improve the method that processing quality aluminium alloy is combined with plastic cement.
For achieving the above object, the present invention adopts following technical scheme:
Aluminum alloy surface nanoporous treatment process, comprises the following steps:
A, with alkali lye, pre-treatment is carried out to aluminum alloy surface;
B, using aluminium alloy as anode, the electrolytic solution put into containing hydrochloric acid, sulfuric acid, oxalic acid, citric acid and inhibiter carries out the anodic etching method, aluminum alloy surface is corroded and forms nanoporous, wherein the concentration of hydrochloric acid is 1.2 ~ 4mol/L, the concentration of sulfuric acid is 0.5 ~ 1.2mol/L, the concentration of oxalic acid is 0.6 ~ 1mol/L, and the concentration of citric acid is 0.5 ~ 0.8mol/L.
Steps A be specially aluminum alloy surface in mass concentration be 2 ~ 4% KOH solution in soak 2 ~ 4 minutes.
Pass into continuous current in KOH solution, size of current is 3 ~ 6mA.
In step B, corrosion electric current density is 0.1 ~ 0.3A/cm
2, corrosive fluid temperature is 40 ~ 60 DEG C, and energising etching time is 100 ~ 150s.
Between yin, yang the two poles of the earth, apply the voltage progressively raised in step B, make the formation of aluminium alloy table nanoporous and extent of corrosion in time, the change tread of voltage and current regulates.
With the speed boosted voltage of 0.05 ~ 0.2V/s in step B, until corrosion current intensity is 2.5 ~ 4A.
Inhibiter in step B is sodium stannate, indium hydroxide, Trisodium Citrate, calcium oxide, zinc oxide, thiocarbamide, methylcellulose gum, morpholine, butylamine, one or more in hexahydroaniline, hexalin, ethylene diamine, triethylene tetramine.
The invention also discloses the method that aluminium alloy is combined with plastic cement, comprise the following steps:
A, above-mentioned aluminum alloy surface nanoporous treatment process is utilized to process nanoporous surface in aluminum alloy surface;
B, aluminium alloy is put into die cavity, make nanoporous surface towards die cavity;
C, plastic material is injected die cavity, plastic cement to be combined closely formation integral structure by the nanoporous surface of integrated injection molding mode and aluminium alloy.
Beneficial effect of the present invention is: the present invention utilizes the inorganic acid constituent of hydrochloric acid, sulfuric acid, oxalic acid, citric acid and the electrolytic solution of inhibiter to carry out the anodic etching method to aluminium alloy, the nanoporous processed is evenly distributed unanimously, and processing is got up rapidly and efficiently, on the other hand, the organic composition contained in the past used etching liquid is also completely eliminated and easily to environment problem; Working method of the present invention has fast, safety, operation simplicity and the good advantage of controllability; Utilize the nano-pore structure that the present invention is formed in aluminum alloy surface, more be conducive to that aluminium alloy structure is integrated with plastics to be combined, the metal plastic assembly had compared with high bond strength can be obtained after injection moulding, environmental protection, realize aluminium alloy efficiently and prepare with the integrated compound of plastic cement.
Embodiment:
The present invention is further illustrated below, and aluminum alloy surface nanoporous treatment process, comprises the following steps:
A, by aluminum alloy surface in mass concentration be 2 ~ 4% KOH solution in soak 2 ~ 4 minutes, pass into continuous current in KOH solution, size of current is 3 ~ 6mA simultaneously, and aluminum alloy surface can be made to form smooth surface;
B, using aluminium alloy as anode, the electrolytic solution put into containing hydrochloric acid, sulfuric acid, oxalic acid, citric acid and inhibiter carries out the anodic etching method, aluminum alloy surface is corroded and forms nanoporous, wherein the concentration of hydrochloric acid is 1.2 ~ 4mol/L, the concentration of sulfuric acid is 0.5 ~ 1.2mol/L, the concentration of oxalic acid is 0.6 ~ 1mol/L, and the concentration of citric acid is 0.5 ~ 0.8mol/L; Wherein, corrosion electric current density is 0.1 ~ 0.3A/cm
2, corrosive fluid temperature is 40 ~ 60 DEG C, and energising etching time is 100 ~ 150s.In the anodic etching method process, the voltage progressively raised can be applied between yin, yang the two poles of the earth, make the formation of aluminium alloy table nanoporous and extent of corrosion in time, the change tread of voltage and current regulates, realize formation and the local excessive erosion of hole top-portion apertures wall portion of nano pore, define the composite array structure that nanoporous top goes out with nano horn, the linking steady character between aluminium alloy table nanoporous surface and plastic cement can be strengthened.With the speed boosted voltage of 0.05 ~ 0.2V/s during applying voltage, until corrosion current intensity is 2.5 ~ 4A.
Inhibiter is sodium stannate, indium hydroxide, Trisodium Citrate, calcium oxide, zinc oxide, thiocarbamide, methylcellulose gum, morpholine, butylamine, one or more in hexahydroaniline, hexalin, ethylene diamine, triethylene tetramine.
The present invention utilizes the inorganic acid constituent of hydrochloric acid, sulfuric acid, oxalic acid, citric acid and the electrolytic solution of inhibiter to carry out the anodic etching method to aluminium alloy, the nanoporous processed is evenly distributed unanimously, and processing is got up rapidly and efficiently, on the other hand, the organic composition contained in the past used etching liquid is also completely eliminated and easily to environment problem; Working method of the present invention has fast, safety, operation simplicity and the good advantage of controllability; Utilize the nano-pore structure that the present invention is formed in aluminum alloy surface, more be conducive to that aluminium alloy structure is integrated with plastics to be combined, the metal plastic assembly had compared with high bond strength can be obtained after injection moulding, environmental protection, realize aluminium alloy efficiently and prepare with the integrated compound of plastic cement.
The invention also discloses the method that aluminium alloy is combined with plastic cement, comprise the following steps:
A, above-mentioned aluminum alloy surface nanoporous treatment process is utilized to process nanoporous surface in aluminum alloy surface;
B, aluminium alloy is put into die cavity, make nanoporous surface towards die cavity;
C, plastic material is injected die cavity, plastic cement to be combined closely formation integral structure by the nanoporous surface of integrated injection molding mode and aluminium alloy.
Utilize the nano-pore structure that nanoporous treatment process of the present invention is formed in aluminum alloy surface, more be conducive to that aluminium alloy structure is integrated with plastics to be combined, the metal plastic assembly had compared with high bond strength can be obtained after injection moulding, environmental protection, realize aluminium alloy efficiently and prepare with the integrated compound of plastic cement.
The above is only better embodiment of the present invention, therefore all equivalences done according to structure, feature and the principle described in patent claim of the present invention change or modify, and are included in patent claim of the present invention.
Claims (8)
1. aluminum alloy surface nanoporous treatment process, is characterized in that, comprises the following steps:
A, with alkali lye, pre-treatment is carried out to aluminum alloy surface;
B, using aluminium alloy as anode, the electrolytic solution put into containing hydrochloric acid, sulfuric acid, oxalic acid, citric acid and inhibiter carries out the anodic etching method, aluminum alloy surface is corroded and forms nanoporous, wherein the concentration of hydrochloric acid is 1.2 ~ 4mol/L, the concentration of sulfuric acid is 0.5 ~ 1.2mol/L, the concentration of oxalic acid is 0.6 ~ 1mol/L, and the concentration of citric acid is 0.5 ~ 0.8mol/L.
2. aluminum alloy surface nanoporous treatment process according to claim 1, is characterized in that: described steps A be specially aluminum alloy surface in mass concentration be 2 ~ 4% KOH solution in soak 2 ~ 4 minutes.
3. aluminum alloy surface nanoporous treatment process according to claim 2, is characterized in that: pass into continuous current in described KOH solution, and size of current is 3 ~ 6mA.
4. aluminum alloy surface nanoporous treatment process according to claim 1, is characterized in that: in described step B, corrosion electric current density is 0.1 ~ 0.3A/cm
2, corrosive fluid temperature is 40 ~ 60 DEG C, and energising etching time is 100 ~ 150s.
5. aluminum alloy surface nanoporous treatment process according to claim 1, it is characterized in that: between yin, yang the two poles of the earth, in described step B, apply the voltage progressively raised, make the formation of aluminium alloy table nanoporous and extent of corrosion in time, the change tread of voltage and current regulates.
6. aluminum alloy surface nanoporous treatment process according to claim 5, is characterized in that: with the speed boosted voltage of 0.05 ~ 0.2V/s in described step B, until corrosion current intensity is 2.5 ~ 4A.
7. the aluminum alloy surface nanoporous treatment process according to claim 1-6 any one, it is characterized in that: the inhibiter in described step B is sodium stannate, indium hydroxide, Trisodium Citrate, calcium oxide, zinc oxide, thiocarbamide, methylcellulose gum, morpholine, butylamine, one or more in hexahydroaniline, hexalin, ethylene diamine, triethylene tetramine.
8. the method that is combined with plastic cement of aluminium alloy, is characterized in that, comprise the following steps:
A, the aluminum alloy surface nanoporous treatment process described in claim 1-7 any one is utilized to process nanoporous surface in aluminum alloy surface;
B, aluminium alloy is put into die cavity, make nanoporous surface towards die cavity;
C, plastic material is injected die cavity, plastic cement to be combined closely formation integral structure by the nanoporous surface of integrated injection molding mode and aluminium alloy.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105098439A (en) * | 2015-08-12 | 2015-11-25 | 四川华丰企业集团有限公司 | Metal nano injection molding air tightness electric connector and manufacturing process thereof |
| CN105140594A (en) * | 2015-08-17 | 2015-12-09 | 上海电力学院 | Composite additive of aluminum-air battery electrolyte and preparation method of composite additive |
| CN106514280A (en) * | 2016-11-30 | 2017-03-22 | 陈清 | Machine tool |
| CN106639374A (en) * | 2016-11-30 | 2017-05-10 | 陈清 | Portable canopy |
| CN106756317A (en) * | 2016-11-29 | 2017-05-31 | 宁波瑞铭机械有限公司 | A kind of sewing machine horizontal transmission axle and its processing method |
| CN107815691A (en) * | 2017-12-20 | 2018-03-20 | 苏州德菱化学品有限公司 | A kind of aluminium workpiece surface nano aperture processing method for nanometer injection |
| US10486391B2 (en) * | 2016-12-26 | 2019-11-26 | Honda Motor Co., Ltd. | Bonded structure and method for manufacturing the same |
| CN114801365A (en) * | 2022-05-27 | 2022-07-29 | 西南科技大学 | High-performance aluminum alloy-carbon fiber reinforced resin matrix composite material and preparation method thereof |
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| CN107815691A (en) * | 2017-12-20 | 2018-03-20 | 苏州德菱化学品有限公司 | A kind of aluminium workpiece surface nano aperture processing method for nanometer injection |
| CN114801365A (en) * | 2022-05-27 | 2022-07-29 | 西南科技大学 | High-performance aluminum alloy-carbon fiber reinforced resin matrix composite material and preparation method thereof |
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