CN102107495A - Method for permanently combining aluminum alloy with polymer - Google Patents
Method for permanently combining aluminum alloy with polymer Download PDFInfo
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- CN102107495A CN102107495A CN201010591756XA CN201010591756A CN102107495A CN 102107495 A CN102107495 A CN 102107495A CN 201010591756X A CN201010591756X A CN 201010591756XA CN 201010591756 A CN201010591756 A CN 201010591756A CN 102107495 A CN102107495 A CN 102107495A
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- aluminum alloy
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Abstract
The invention provides a method for permanently combining an aluminum alloy with a polymer, which comprises the following steps: (1) cleaning and drying the surface of an aluminum alloy; (2) covering and shielding a non-processing area on the surface of the aluminum alloy; (3) irradiating the surface of the aluminum alloy by using UV (ultraviolet) light; (4) taking off the shielding matter covering the surface of the aluminum alloy, placing the aluminum alloy which is irradiated by the UV light into an injection-molding mold and injecting a melt polymer onto the surface of the aluminum alloy; and (5) taking out the combined body after the polymer is cooled and solidified. By using the method, a porous oxidation film structure is formed on the surface of the aluminum alloy by irradiating with UV light, thereby being beneficial to combining the aluminum alloy with the polymer and being high in bonding strength. The process of processing the surface is non-toxic, harmless and completely environment-friendly. Besides, the non-processing area on the surface of the aluminum alloy can be shielded and the pertinence is strong. Finally, the oxidation film is only produced in a combining area, the following treatment of the surface of the aluminum alloy is not influenced, and the final product is more beautiful.
Description
Technical field
The present invention relates to the moulding process field, relate in particular to a kind of aluminium alloy and the permanent method that combines of polymer.
Background technology
Electronic product shell as mobile phone, notebook computer, MP3 etc., often need allow the combination of foreign material form supporting construction now.And polymer and metal are directly combined the bonding mode of glue that usually adopts, and there is the adhesion instability in glue, and the clean level of mating surface is had relatively high expectations, problem such as inefficacy easily in hot and humid environment;
Patent (patent No.: US 20060257624A1) (patent No.: International Patent No WO2004/041532) described a kind of novel aluminium alloy and the associated methods of polymer:
The permanent combined process of aluminium alloy and polymer be by with aluminium alloy with forming polymer before, through after the chemical etching, the surface can form the hole of nanometer diameter in the aqueous solution of peroxophosphoric acid or NaOH on the surface.The aluminium alloy that has experienced this process is embedded in the middle of the injection molding again.PBT (polybutylene terephthalate (PBT)) or PPS (polyphenylene sulfide) are injected into aluminum alloy surface, and polymer enters in the fine hole of aluminum alloy surface, and polymeric material combines securely with aluminium alloy, is far superior to adopt gluing adhesion in conjunction with effect.
Its process technology key is to adopt chemical method for etching to carry out aluminum alloy surface to handle, and produces the surface of porous alligatoring.Following shortcoming is arranged:
1. need to use a large amount of chemical solvents such as NaOH or phosphoric acid etc., can pollute, run in the opposite direction with the development in science and technology theory of environmental protection to environment.
2. the alloy product surface will be electroplated or anodized usually, improve surperficial corrosion resistance and ornamental, aluminium alloy all is dipped in the middle of the chemical solvent, can produce etching equally to the surface of the work that does not need moulding, this part zone is covered difficulty, the bad control of dead area fully in liquid environment;
3. employing is existing can exert an influence to the follow-up process of surface treatment of product with technology, thereby influences the integral surface outward appearance of product.
Summary of the invention
The technical problem to be solved in the present invention provide a kind of environmental protection, with strong points, help subsequent treatment, attractive in appearance and aluminium alloy and the permanent method that combines of polymer that bond strength is high.
In order to address the above problem, the invention provides a kind of aluminium alloy and the permanent method that combines of polymer, may further comprise the steps:
(1) cleaning and oven dry aluminum alloy surface;
(2) the non-processing region of overlay masking aluminum alloy surface;
(3) use UV illumination to penetrate aluminum alloy surface 1-2 hour;
(4) take off aluminum alloy surface overlay masking thing, the postradiation aluminium alloy of UV light is put into injection forming mold, and to this aluminum alloy surface injection molten polymer;
(5) treat to take out after the polymer cooled and solidified combination of aluminium alloy and polymer.
Further, further comprising the steps of in the described step (1):
(1.1) aluminium alloy is immersed in the degreasing agent aqueous solution, to slough the aluminum alloy surface grease;
(1.2) use the water rinse aluminium alloy, with degreasing agent and aluminum alloy surface foul flush away;
(1.3) aluminium alloy is immersed in the 3%-5%NaOH aqueous solution, to slough the aluminum alloy surface oxide;
(1.4) use pure water rinsing aluminium alloy, with aluminum alloy surface NaOH and foul flush away;
(1.5) oven dry aluminum alloy surface.
Further, adopt the non-processing region of tool overlay masking aluminum alloy surface in the described step (2).
Further, adopt the non-processing region of adhesive tape overlay masking aluminum alloy surface in the described step (2).
Further, in the described step (3) aluminium alloy being put into the UV stove carries out UV illumination and penetrates.
Further, adopt injection machine to this aluminium alloy injection molten polymer in the described step (4).
The present invention has following advantage:
1, the present invention adopts UV illumination to penetrate, and makes aluminum alloy surface form the oxide-film structure that has hole, help combining with polymer, and the bond strength height, and in this surface treatment process, nontoxic, harmless, environmental protection fully; In addition, can cover the non-processing region of aluminum alloy surface, with strong points; At last, this oxide-film only produces at calmodulin binding domain CaM, can not influence the subsequent treatment of aluminum alloy surface, improves the aesthetic property of final products greatly.
2, adopt in the processing procedure of the present invention that utensil and material are simple, nonhazardous, nothing volatilization, not only environmental protection but also reduce cost, improve operability, in addition, process of the present invention is simple, is easy to learn and use, and need not to carry out the complexity training, and easily control processing procedure, obtain optimum result.
Description of drawings
Below in conjunction with accompanying drawing embodiments of the present invention are described further:
Fig. 1 shows aluminum alloy surface 300X surface topography schematic diagram after UV illumination in one hour is penetrated among the present invention;
Fig. 2 shows aluminum alloy surface 10000X surface topography schematic diagram after UV illumination in one hour is penetrated among the present invention;
Fig. 3 shows aluminium alloy and polymer injection mo(u)lding view among the present invention.
The specific embodiment
The present invention includes following steps:
(1) cleaning and oven dry aluminum alloy surface so that aluminum alloy surface does not have dirt, oil stain and moisture, improve the subsequent treatment effect.
(2) the non-processing region of overlay masking aluminum alloy surface only needs overlay masking to live non-processing region, and UV (ultraviolet ray) light just can not have influence on this non-processing region, thereby makes subsequent treatment more targeted.
(3) use UV illumination to penetrate aluminum alloy surface 1-2 hour that overlay masking is handled, make the irradiated surface of aluminium alloy form the oxide-film that a kind of coralliform is protruding and have porous.This structure of aluminum alloy surface as shown in Figure 1 and Figure 2.The projection of this oxide-film can combine with molten polymer with the hole, and intensity is higher.
Aluminum alloy surface is under the influence of UV light, and the surface activates, with airborne O
2And CO
2React, form the film of aluminium oxide and aluminium carbonate, reaction mechanism is as follows:
2Al+3O
2→2Al
2O
3 Al
2O
3+3CO
2→Al
2(CO
3)
3
Composition test result after UV handles is as shown in the table for aluminum alloy surface:
| The point position | The C element percentage | The O element percentage | The AL element percentage | Add up to |
| 1 | 18.86 | 52.32 | 28.82 | 100.00 |
| 2 | 12.20 | 58.73 | 29.07 | 100.00 |
| 3 | 0 | 59.92 | 40.08 | 100.00 |
| 4 | 13.43 | 57.94 | 28.64 | 100.00 |
| 5 | 8.16 | 43.72 | 48.11 | 100.00 |
(4) take off aluminum alloy surface overlay masking thing, the postradiation aluminium alloy of UV light is put into injection forming mold, and to this aluminum alloy surface injection molten polymer.This structure as shown in Figure 3, aluminium alloy 1 is provided with in the master mold 2, male model 3 is equipped with master mold 2 and aluminium alloy 1, male model 3 is provided with cast gate 4, connect on the cast gate 4 injection machine 5 is set, molten polymer 6 enters in the space between male model 3 and the aluminium alloy 1 by injection machine 5 injections and through this cast gate 4.Molten polymer 6 one sides interpenetrate with aluminium alloy 1 oxide-film and combine, in addition according to male model 3 shape packing spaces and definite shape.Polymer may be selected to be PBT (polybutylene terephthalate (PBT)) or PPS (polyphenylene sulfide) herein.
(5) treat to take out after the polymer cooled and solidified combination of aluminium alloy and polymer, aluminium alloy is nested mutually with polymer at this moment, is combined as a whole fully.
The present invention adopts UV illumination to penetrate, and makes aluminum alloy surface form the oxide-film structure that has hole, help combining with polymer, and the bond strength height, and in this surface treatment process process, nontoxic, harmless, environmental protection fully; In addition, can cover the non-processing region of aluminum alloy surface, with strong points; At last, this oxide-film only produces at calmodulin binding domain CaM, can not influence the subsequent treatment of aluminum alloy surface, improves the aesthetic property of final products greatly.
Among the present invention, further comprising the steps of in the step (1) for dirt, oil stain and the moisture of removing aluminum alloy surface:
(1.1) aluminium alloy is immersed in the degreasing agent aqueous solution ten minutes, to slough the aluminum alloy surface grease;
(1.2) use the water rinse aluminium alloy, with aluminum alloy surface degreasing agent and foul flush away;
(1.3) aluminium alloy is immersed in the 3%-5%NaOH aqueous solution, to slough the aluminum alloy surface oxide;
(1.4) use pure water rinsing aluminium alloy, with aluminum alloy surface NaOH and foul flush away;
(1.5) oven dry aluminum alloy surface.
Among the present invention, adopt tool or the non-processing region of adhesive tape overlay masking aluminum alloy surface in the step (2).Tool and adhesive tape all can effectively block UV illumination to be penetrated, and obtains comparatively easily, and cost is also very cheap, has reduced use cost of the present invention generally.In addition, also can carry out anodic oxidation or electroplating processes to aluminium alloy earlier after, carry out the UV photo-irradiation treatment again after removing calmodulin binding domain CaM coating.
Among the present invention, in the step (3) aluminium alloy put into the UV stove and carry out UV illumination and penetrate.The UV illumination that the UV stove can carry out under the closed state aluminium alloy is easily penetrated, and avoids producing and pollutes and damage, and can promote environment temperature, raising illumination efficiency.
Among the present invention, adopt injection machine in the step (4) to this aluminium alloy injection molten polymer.Adopt the convenient operation of injection machine, and injection force is stronger, effect is better, and moulding is quicker.
Adopt in the processing procedure of the present invention that utensil and material are simple, nonhazardous, nothing volatilization, not only environmental protection but also reduce cost, improve operability, in addition, process of the present invention is simple, is easy to learn and use, and need not to carry out the complexity training, and easily control processing procedure, obtain optimum result.
In sum; being preferred embodiment of the present invention only below, is not to be used to limit protection scope of the present invention, therefore; all any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. aluminium alloy and the permanent method that combines of polymer is characterized in that, may further comprise the steps:
(1) cleaning and oven dry aluminum alloy surface;
(2) the non-processing region of overlay masking aluminum alloy surface;
(3) use UV illumination to penetrate aluminum alloy surface 1-2 hour;
(4) take off aluminum alloy surface overlay masking thing, the postradiation aluminium alloy of UV light is put into injection forming mold, and to this aluminum alloy surface injection molten polymer;
(5) treat to take out after the polymer cooled and solidified combination of aluminium alloy and polymer.
2. aluminium alloy as claimed in claim 1 and the permanent method that combines of polymer is characterized in that: further comprising the steps of in the described step (1):
(1.1) aluminium alloy is immersed in the degreasing agent aqueous solution, to slough the aluminum alloy surface grease;
(1.2) use the water rinse aluminium alloy, with degreasing agent and aluminum alloy surface foul flush away;
(1.3) aluminium alloy is immersed in the 3%-5%NaOH aqueous solution, to slough the aluminum alloy surface oxide;
(1.4) use pure water rinsing aluminium alloy, with aluminum alloy surface NaOH and foul flush away;
(1.5) oven dry aluminum alloy surface.
3. aluminium alloy as claimed in claim 1 and the permanent method that combines of polymer is characterized in that: adopt the non-processing region of tool overlay masking aluminum alloy surface in the described step (2).
4. aluminium alloy as claimed in claim 1 and the permanent method that combines of polymer is characterized in that: adopt the non-processing region of adhesive tape overlay masking aluminum alloy surface in the described step (2).
5. aluminium alloy as claimed in claim 1 and the permanent method that combines of polymer is characterized in that: in the described step (3) aluminium alloy put into the UV stove and carry out UV illumination and penetrate.
6. aluminium alloy as claimed in claim 1 and the permanent method that combines of polymer is characterized in that: adopt injection machine to this aluminium alloy injection molten polymer in the described step (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010591756XA CN102107495A (en) | 2010-12-16 | 2010-12-16 | Method for permanently combining aluminum alloy with polymer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010591756XA CN102107495A (en) | 2010-12-16 | 2010-12-16 | Method for permanently combining aluminum alloy with polymer |
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| CN102107495A true CN102107495A (en) | 2011-06-29 |
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|---|---|---|---|
| CN201010591756XA Pending CN102107495A (en) | 2010-12-16 | 2010-12-16 | Method for permanently combining aluminum alloy with polymer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113442371A (en) * | 2021-07-01 | 2021-09-28 | 兴化市三诚精密锻造有限公司 | Metal part embedding equipment for plastic product production |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007182071A (en) * | 2005-12-08 | 2007-07-19 | Toray Ind Inc | Composite of aluminum alloy and resin and production method thereof |
| JP2008214751A (en) * | 2007-02-07 | 2008-09-18 | Nissan Motor Co Ltd | Method for modifying surface of metal and surface-modified member |
-
2010
- 2010-12-16 CN CN201010591756XA patent/CN102107495A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007182071A (en) * | 2005-12-08 | 2007-07-19 | Toray Ind Inc | Composite of aluminum alloy and resin and production method thereof |
| JP2008214751A (en) * | 2007-02-07 | 2008-09-18 | Nissan Motor Co Ltd | Method for modifying surface of metal and surface-modified member |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113442371A (en) * | 2021-07-01 | 2021-09-28 | 兴化市三诚精密锻造有限公司 | Metal part embedding equipment for plastic product production |
| CN113442371B (en) * | 2021-07-01 | 2022-04-05 | 兴化市三诚精密锻造有限公司 | Metal part embedding equipment for plastic product production |
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Application publication date: 20110629 |