US20160160371A1 - Metal-and-resin composite and method for making the same - Google Patents
Metal-and-resin composite and method for making the same Download PDFInfo
- Publication number
- US20160160371A1 US20160160371A1 US14/585,891 US201414585891A US2016160371A1 US 20160160371 A1 US20160160371 A1 US 20160160371A1 US 201414585891 A US201414585891 A US 201414585891A US 2016160371 A1 US2016160371 A1 US 2016160371A1
- Authority
- US
- United States
- Prior art keywords
- aluminum
- resin
- pores
- oxide film
- article
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/16—Pretreatment, e.g. desmutting
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/18—After-treatment, e.g. pore-sealing
- C25D11/24—Chemical after-treatment
- C25D11/246—Chemical after-treatment for sealing layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0078—Measures or configurations for obtaining anchoring effects in the contact areas between layers
- B29C37/0082—Mechanical anchoring
- B29C37/0085—Mechanical anchoring by means of openings in the layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
-
- 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
- C23F1/32—Alkaline compositions
- C23F1/36—Alkaline compositions for etching aluminium or alloys thereof
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/10—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing organic acids
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/18—After-treatment, e.g. pore-sealing
- C25D11/24—Chemical after-treatment
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/02—Etching
- C25F3/04—Etching of light metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14311—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles
- B29C2045/14327—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles anchoring by forcing the material to pass through a hole in the article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
- B29C45/14795—Porous or permeable material, e.g. foam
- B29C2045/14803—Porous or permeable material, e.g. foam the injected material entering minute pores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C2045/1486—Details, accessories and auxiliary operations
- B29C2045/14868—Pretreatment of the insert, e.g. etching, cleaning
Definitions
- the subject matter herein generally relates to a metal-and-resin composite and a method for making the metal-and-resin composite.
- housings of the portable electronic devices may be made of two or more different materials, such as aluminum alloy and resin. There is a need to combine aluminum alloy and resin.
- FIG. 1 is a cross-sectional view of an exemplary embodiment of a metal-and-resin composite.
- FIG. 2 is a scanning electron microscope (SEM) image of an exemplary embodiment of a cross-section of aluminum or aluminum alloy after electrochemical treatment.
- FIG. 3 is a cross-sectional view of an exemplary embodiment of the aluminum or aluminum alloy after electrochemical treatment.
- FIG. 4 is an SEM image of an exemplary embodiment of a surface of the aluminum or aluminum alloy after electrochemical treatment.
- FIG. 5 is a flow chart.
- FIG. 6 is a cross-sectional view of molding the composite shown in FIG. 1 .
- Coupled is defined as connected, whether directly or indirectly through intervening components, and is not necessarily limited to physical connections.
- the connection can be such that the objects are permanently connected or releasably connected.
- substantially is defined to be essentially conforming to the particular dimension, shape or other word that substantially modifies, such that the component need not be exact.
- substantially cylindrical means that the object resembles a cylinder, but can have one or more deviations from a true cylinder.
- comprising when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series, and the like.
- FIG. 1 illustrates a metal-and-resin composite 100 according to a first exemplary embodiment.
- the metal-and-resin composite 100 includes an aluminum or aluminum alloy substrate 11 , an aluminum oxide film 13 on the aluminum or aluminum alloy substrate 11 , and at least one resin article 15 coupled to the aluminum oxide film 13 .
- FIG. 2 illustrates an SEM image of a cross-section of the aluminum or aluminum alloy after being electrochemically treated, wherein the thin layer in the middle of FIG. 2 is an aluminum oxide film 13 , the substance below the aluminum oxide film 13 is an aluminum or aluminum alloy substrate 11 , and the substance above the aluminum oxide film 13 is a resin part configured to fix the sample of the aluminum or aluminum alloy substrate 11 together with the aluminum oxide film 13 during the SEM test.
- the aluminum oxide film 13 is thin and can have a thickness of less than 1 ⁇ m. In some embodiments, the aluminum oxide film 13 can have a thickness of about 500 nm.
- FIG. 3 shows that the aluminum oxide film 13 defines a plurality of nano-pores 131 , and the aluminum or aluminum alloy substrate 11 defines a plurality of corrosion pores 111 in the surface. Some nano-pores 131 extend through the aluminum oxide film 13 and couple to the corrosion pores 111 partly or completely. Thus, parts of the resin article 15 can fill in the nano-pores 131 and the corrosion pores 111 coupling to the nano-pores 131 .
- some nano-pores 131 do not couple to the corrosion pores 111 . As shown in FIG. 3 , some of the nano-pores 131 do not extend through the aluminum oxide film 13 , and some of the nano-pores 131 extend through the aluminum oxide film 13 and do not couple to a corresponding corrosion pore 111 . As well, some corrosion pores 111 do not couple to a corresponding nano-pore 131 as shown in FIG. 3 .
- FIG. 4 illustrates an SEM image of a surface of the aluminum or aluminum alloy after electrochemical treatment. As shown, the nano-pores 131 are substantially evenly distributed in the aluminum oxide film 13 . The nano-pores 131 have an average diameter of about 10 to about 80 nm.
- the aluminum oxide film 13 with the nano-pores 131 and the corrosion pores 111 of the aluminum oxide film 13 are formed by electrochemically treating an aluminum or aluminum alloy article.
- the electrochemical treatment in this disclosure is substantially different from the traditional anodizing process for aluminum or aluminum alloy.
- only a porous aluminum oxide layer having a thickness of about several micrometers to hundreds of micrometers forms on the aluminum or aluminum alloy.
- the at least one resin article 15 is formed on the aluminum oxide film 13 by injection molding.
- the at least one resin article 15 can be made of resin selected from a group consisting of polyphenylene sulfide (PPS), polyamide (PA), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), thermoplastic polyurethane elastomer (TPU), thermoplastic polyester elastomer (TPEE), polycarbonate (PC), or any combination thereof.
- the at least one resin article 15 can also contain glass fiber.
- the resin is PPS, PBT, PET, or PC
- the at least one resin article 15 can also contain about 30 wt % glass fiber.
- the at least one resin article 15 can contain about 50 wt % glass fiber.
- FIG. 5 illustrates an embodiment of a method 500 for making the metal-and-resin composite 100 may include the following steps.
- an aluminum or aluminum alloy article is provided and degreased.
- the degreasing process can include dipping the aluminum or aluminum alloy article in a sodium salt water solution for about 5 to about 15 minutes.
- the sodium salt water solution can include sodium carbonate having a concentration of about 30 to about 50 grams per liter (g/L), sodium phosphate having a concentration of about 30 to about 50 g/L, and sodium silicate having a concentration of about 3 to about 5 g/L.
- the temperature of the sodium salt water solution can be about 50 to about 60 degrees Celsius (° C.) during the degreasing process.
- the aluminum or aluminum alloy article is etched using an alkaline water solution.
- the etching process not only can remove metal oxide film which naturally form on the surface of the aluminum or aluminum alloy article, but also can roughen the surface of the aluminum or aluminum alloy article.
- the etching process can include dipping the degreased aluminum or aluminum alloy article in the alkaline water solution at room temperature for about 1 to about 3 minutes.
- the alkaline water solution can include sodium hydroxide having a concentration of about 30 percent to about 60 percent by weight.
- the aluminum or aluminum alloy article is electrochemically treated to form the aluminum or aluminum alloy substrate 11 defining the corrosion pores 111 and the aluminum oxide film 13 defining the nano-pores 131 on the aluminum or aluminum alloy substrate 11 .
- Some of the nano-pores 131 extend through the aluminum oxide film 13 and couple to the corrosion pores 111 .
- the aluminum oxide film 13 is thin and has a thickness of less than 1 ⁇ m.
- the nano-pores 131 have an average diameter of about 10 to about 80 nm.
- the electrochemical treatment can be carried out in an acid water solution, with the aluminum or aluminum alloy article being an anode, and a stainless steel board or a lead plate being a cathode.
- the acid water solution contains phosphoric acid, sulfuric acid, oxalic acid, and citric acid, wherein the phosphoric acid can have a concentration of about 100 to about 250 milliliters per liter (ml/L), the sulfuric acid can have a concentration of about 20 to about 60 ml/L, the oxalic acid can have a concentration of about 1 to about 10 ml/L, and the citric acid can have a concentration of about 0.5 to about 2.5 ml/L.
- the acid water solution has a temperature of about 10 to about 30° C.
- the electric current density through the acid solution is about 0.5 to about 4 ampere per square decimeter (A/dm 2 ).
- the electrochemical treatment can last for about 3 to about 15 minutes, which is considerably less time and more effective than the traditional anodizing process (about 20 to about 60 minutes).
- the aluminum or aluminum alloy substrate 11 together with the aluminum oxide film 13 is rinsed in water and then dried.
- the first main reaction is that aluminum atoms react with oxygen to form aluminum oxide. As such, the aluminum oxide film 13 defining nano-pores 131 is formed.
- the second main reaction is that aluminum atoms lose electrons to form aluminum ions in acidic solution, which makes the aluminum or aluminum alloy substrate 11 define the corrosion pores 111 in the surface.
- the aluminum in the positions of the crystal defects can have priority to lose electrons to form aluminum ions.
- FIG. 6 illustrates an injection mold 20 , which includes a core insert 23 and a cavity insert 21 .
- the core insert 23 defines several gates 231 and several first cavities 233 .
- the cavity insert 21 defines a second cavity 211 for receiving the aluminum or aluminum alloy substrate 11 together with the aluminum oxide film 13 .
- the aluminum or aluminum alloy substrate 11 together with the aluminum oxide film 13 is located in the second cavity 211 .
- Molten resin is injected through the gates 231 to coat the surface of the aluminum oxide film 13 , fill the nano-pores 131 and the corrosion pores 111 coupling to the nano-pores 131 , and fill the first cavities 233 to form the resin article 15 .
- the composite 100 is formed.
- the at least one resin article 15 can be made of resin selected from a group consisting of PPS, PA, PBT, PET, TPU, TPEE, PC, or any combination thereof.
- the at least one resin article 15 can also contain glass fiber.
- the resin is PPS, PBT, PET, or PC
- the at least one resin article 15 can also contain about 30 wt % glass fiber.
- the resin is PA, the at least one resin article 15 can contain about 50% glass fiber.
- the metal-and-resin composite 100 in this disclosure has an improved bond between the aluminum or aluminum alloy substrate 11 and the resin article 15 , for the parts of the resin article 15 not only fill in the nano-pores 131 of the aluminum oxide film 13 , but also fill in the corrosion pores 111 of the aluminum or aluminum alloy substrate 11 .
Abstract
Description
- The subject matter herein generally relates to a metal-and-resin composite and a method for making the metal-and-resin composite.
- Many people use portable electronic devices such as mobile phones and personal digital assistants (PDAs). Housings of the portable electronic devices may be made of two or more different materials, such as aluminum alloy and resin. There is a need to combine aluminum alloy and resin.
- Implementations of the present technology will now be described, by way of example only, with reference to the attached figures.
-
FIG. 1 is a cross-sectional view of an exemplary embodiment of a metal-and-resin composite. -
FIG. 2 is a scanning electron microscope (SEM) image of an exemplary embodiment of a cross-section of aluminum or aluminum alloy after electrochemical treatment. -
FIG. 3 is a cross-sectional view of an exemplary embodiment of the aluminum or aluminum alloy after electrochemical treatment. -
FIG. 4 is an SEM image of an exemplary embodiment of a surface of the aluminum or aluminum alloy after electrochemical treatment. -
FIG. 5 is a flow chart. -
FIG. 6 is a cross-sectional view of molding the composite shown inFIG. 1 . - It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, methods, procedures and components have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the embodiments described herein. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features of the present disclosure.
- Several definitions that apply throughout this disclosure will now be presented.
- The term “coupled” is defined as connected, whether directly or indirectly through intervening components, and is not necessarily limited to physical connections. The connection can be such that the objects are permanently connected or releasably connected. The term “substantially” is defined to be essentially conforming to the particular dimension, shape or other word that substantially modifies, such that the component need not be exact. For example, substantially cylindrical means that the object resembles a cylinder, but can have one or more deviations from a true cylinder. The term “comprising,” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series, and the like.
-
FIG. 1 illustrates a metal-and-resin composite 100 according to a first exemplary embodiment. The metal-and-resin composite 100 includes an aluminum oraluminum alloy substrate 11, analuminum oxide film 13 on the aluminum oraluminum alloy substrate 11, and at least oneresin article 15 coupled to thealuminum oxide film 13. -
FIG. 2 illustrates an SEM image of a cross-section of the aluminum or aluminum alloy after being electrochemically treated, wherein the thin layer in the middle ofFIG. 2 is analuminum oxide film 13, the substance below thealuminum oxide film 13 is an aluminum oraluminum alloy substrate 11, and the substance above thealuminum oxide film 13 is a resin part configured to fix the sample of the aluminum oraluminum alloy substrate 11 together with thealuminum oxide film 13 during the SEM test. Thealuminum oxide film 13 is thin and can have a thickness of less than 1 μm. In some embodiments, thealuminum oxide film 13 can have a thickness of about 500 nm. -
FIG. 3 shows that thealuminum oxide film 13 defines a plurality of nano-pores 131, and the aluminum oraluminum alloy substrate 11 defines a plurality ofcorrosion pores 111 in the surface. Some nano-pores 131 extend through thealuminum oxide film 13 and couple to thecorrosion pores 111 partly or completely. Thus, parts of theresin article 15 can fill in the nano-pores 131 and thecorrosion pores 111 coupling to the nano-pores 131. - In the exemplary embodiment, some nano-
pores 131 do not couple to thecorrosion pores 111. As shown inFIG. 3 , some of the nano-pores 131 do not extend through thealuminum oxide film 13, and some of the nano-pores 131 extend through thealuminum oxide film 13 and do not couple to acorresponding corrosion pore 111. As well, somecorrosion pores 111 do not couple to a corresponding nano-pore 131 as shown inFIG. 3 . -
FIG. 4 illustrates an SEM image of a surface of the aluminum or aluminum alloy after electrochemical treatment. As shown, the nano-pores 131 are substantially evenly distributed in thealuminum oxide film 13. The nano-pores 131 have an average diameter of about 10 to about 80 nm. - The
aluminum oxide film 13 with the nano-pores 131 and thecorrosion pores 111 of thealuminum oxide film 13 are formed by electrochemically treating an aluminum or aluminum alloy article. The electrochemical treatment in this disclosure is substantially different from the traditional anodizing process for aluminum or aluminum alloy. In the traditional anodizing process of aluminum or aluminum alloy substrate, only a porous aluminum oxide layer having a thickness of about several micrometers to hundreds of micrometers forms on the aluminum or aluminum alloy. - The at least one
resin article 15 is formed on thealuminum oxide film 13 by injection molding. The at least oneresin article 15 can be made of resin selected from a group consisting of polyphenylene sulfide (PPS), polyamide (PA), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), thermoplastic polyurethane elastomer (TPU), thermoplastic polyester elastomer (TPEE), polycarbonate (PC), or any combination thereof. In some embodiments, the at least oneresin article 15 can also contain glass fiber. For example, when the resin is PPS, PBT, PET, or PC, the at least oneresin article 15 can also contain about 30 wt % glass fiber. When the resin is PA, the at least oneresin article 15 can contain about 50 wt % glass fiber. -
FIG. 5 illustrates an embodiment of amethod 500 for making the metal-and-resin composite 100 may include the following steps. - First, in
block 51, an aluminum or aluminum alloy article is provided and degreased. The degreasing process can include dipping the aluminum or aluminum alloy article in a sodium salt water solution for about 5 to about 15 minutes. The sodium salt water solution can include sodium carbonate having a concentration of about 30 to about 50 grams per liter (g/L), sodium phosphate having a concentration of about 30 to about 50 g/L, and sodium silicate having a concentration of about 3 to about 5 g/L. The temperature of the sodium salt water solution can be about 50 to about 60 degrees Celsius (° C.) during the degreasing process. Once degreased, the aluminum or aluminum alloy article is removed from the sodium salt water solution and rinsed in water. - Then, in
block 52, the aluminum or aluminum alloy article is etched using an alkaline water solution. The etching process not only can remove metal oxide film which naturally form on the surface of the aluminum or aluminum alloy article, but also can roughen the surface of the aluminum or aluminum alloy article. The etching process can include dipping the degreased aluminum or aluminum alloy article in the alkaline water solution at room temperature for about 1 to about 3 minutes. The alkaline water solution can include sodium hydroxide having a concentration of about 30 percent to about 60 percent by weight. Once etched, the aluminum or aluminum alloy article is removed from the alkaline water solution and rinsed in water. - Next, in
block 53, the aluminum or aluminum alloy article is electrochemically treated to form the aluminum oraluminum alloy substrate 11 defining thecorrosion pores 111 and thealuminum oxide film 13 defining the nano-pores 131 on the aluminum oraluminum alloy substrate 11. Some of the nano-pores 131 extend through thealuminum oxide film 13 and couple to thecorrosion pores 111. Thealuminum oxide film 13 is thin and has a thickness of less than 1 μm. The nano-pores 131 have an average diameter of about 10 to about 80 nm. - The electrochemical treatment can be carried out in an acid water solution, with the aluminum or aluminum alloy article being an anode, and a stainless steel board or a lead plate being a cathode. The acid water solution contains phosphoric acid, sulfuric acid, oxalic acid, and citric acid, wherein the phosphoric acid can have a concentration of about 100 to about 250 milliliters per liter (ml/L), the sulfuric acid can have a concentration of about 20 to about 60 ml/L, the oxalic acid can have a concentration of about 1 to about 10 ml/L, and the citric acid can have a concentration of about 0.5 to about 2.5 ml/L. The acid water solution has a temperature of about 10 to about 30° C. during the electrochemical treatment. The electric current density through the acid solution is about 0.5 to about 4 ampere per square decimeter (A/dm2). The electrochemical treatment can last for about 3 to about 15 minutes, which is considerably less time and more effective than the traditional anodizing process (about 20 to about 60 minutes). After the electrochemical treatment, the aluminum or
aluminum alloy substrate 11 together with thealuminum oxide film 13 is rinsed in water and then dried. - During the electrochemical treating process, aluminum atoms in the surface of the aluminum or aluminum alloy article can undergo two different main chemical reactions. The first main reaction is that aluminum atoms react with oxygen to form aluminum oxide. As such, the
aluminum oxide film 13 defining nano-pores 131 is formed. The first main reaction formula is as follows: 2H2O−4e−=O2+4H+, 4Al+3O2=2Al2O3. The second main reaction is that aluminum atoms lose electrons to form aluminum ions in acidic solution, which makes the aluminum oraluminum alloy substrate 11 define the corrosion pores 111 in the surface. The aluminum in the positions of the crystal defects can have priority to lose electrons to form aluminum ions. The second main reaction formula is: Al−3e−=Al3++3e−. Some of the nano-pores 131 extend through thealuminum oxide film 13 and couple to the corrosion pores 111. With the growth of thealuminum oxide film 13, the forming of the corrosion pores 111 would be inhibited gradually until stopping. - Finally, in
block 54, at least oneresin article 15 is formed on thealuminum oxide film 13 by injection molding.FIG. 6 illustrates aninjection mold 20, which includes acore insert 23 and acavity insert 21. Thecore insert 23 definesseveral gates 231 and severalfirst cavities 233. Thecavity insert 21 defines asecond cavity 211 for receiving the aluminum oraluminum alloy substrate 11 together with thealuminum oxide film 13. The aluminum oraluminum alloy substrate 11 together with thealuminum oxide film 13 is located in thesecond cavity 211. Molten resin is injected through thegates 231 to coat the surface of thealuminum oxide film 13, fill the nano-pores 131 and the corrosion pores 111 coupling to the nano-pores 131, and fill thefirst cavities 233 to form theresin article 15. As such, the composite 100 is formed. - The at least one
resin article 15 can be made of resin selected from a group consisting of PPS, PA, PBT, PET, TPU, TPEE, PC, or any combination thereof. In some embodiments, the at least oneresin article 15 can also contain glass fiber. For example, when the resin is PPS, PBT, PET, or PC, the at least oneresin article 15 can also contain about 30 wt % glass fiber. When the resin is PA, the at least oneresin article 15 can contain about 50% glass fiber. - The metal-and-
resin composite 100 in this disclosure has an improved bond between the aluminum oraluminum alloy substrate 11 and theresin article 15, for the parts of theresin article 15 not only fill in the nano-pores 131 of thealuminum oxide film 13, but also fill in the corrosion pores 111 of the aluminum oraluminum alloy substrate 11. - It is believed that the exemplary embodiment and its advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the scope of the disclosure or sacrificing all of its advantages, the examples hereinbefore described merely being preferred or exemplary embodiments of the disclosure.
Claims (20)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410745570.3A CN105729933A (en) | 2014-12-09 | 2014-12-09 | Complex of aluminum or aluminum alloy and plastic, and preparation method thereof |
CN201410745570.3 | 2014-12-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20160160371A1 true US20160160371A1 (en) | 2016-06-09 |
Family
ID=56093781
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/585,891 Abandoned US20160160371A1 (en) | 2014-12-09 | 2014-12-30 | Metal-and-resin composite and method for making the same |
Country Status (2)
Country | Link |
---|---|
US (1) | US20160160371A1 (en) |
CN (1) | CN105729933A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170291393A1 (en) * | 2016-04-08 | 2017-10-12 | Ur Materials Industry (ShenZhen) Co., Ltd. | Composite article and method for making the same |
WO2019039831A1 (en) | 2017-08-25 | 2019-02-28 | 주식회사 플라스탈 | Method for producing metal-polymer resin conjugate |
CN109910226A (en) * | 2017-12-12 | 2019-06-21 | 比亚迪股份有限公司 | The surface treatment method and metallic matrix and metal-resin composite and its manufacturing method of metallic matrix |
US10486391B2 (en) * | 2016-12-26 | 2019-11-26 | Honda Motor Co., Ltd. | Bonded structure and method for manufacturing the same |
CN113561407A (en) * | 2021-07-26 | 2021-10-29 | 怡力精密制造有限公司 | Manufacturing method of composite board, frame and glasses |
KR102327770B1 (en) | 2021-05-06 | 2021-11-18 | 지오네이션 주식회사 | Metal-resin composite and method for manufacturing the same |
KR102388883B1 (en) | 2021-01-03 | 2022-04-21 | 박소빈 | process for manufacturing metal-resin composite assembly |
KR20220107340A (en) | 2021-01-25 | 2022-08-02 | 주식회사 플라스탈 | composite assembly of die-cased metal parts and polymer resin and manufacturing method thereof |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106363869B (en) * | 2016-10-25 | 2019-04-12 | 深圳市宝元金实业有限公司 | A method of nano aperture is formed in metallic substrate surface |
CN108215055B (en) * | 2016-12-21 | 2020-04-24 | 比亚迪股份有限公司 | Shell, preparation method thereof and electronic product |
CN109747105A (en) * | 2017-11-02 | 2019-05-14 | 比亚迪股份有限公司 | Shell and preparation method thereof and electronic product |
CN108930055B (en) * | 2018-07-17 | 2021-08-31 | 深圳市纳明特科技发展有限公司 | Metal surface nano coating treatment method |
CN114536647A (en) * | 2021-12-25 | 2022-05-27 | 东莞市金铂钰橡塑五金制品有限公司 | Mesh cloth ear cap forming method |
CN114606560A (en) * | 2022-03-11 | 2022-06-10 | 东莞市慧泽凌化工科技有限公司 | Method for treating titanium-aluminum composite member, method for producing composite member of titanium-aluminum composite member and resin, and product |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4022671A (en) * | 1976-04-20 | 1977-05-10 | Alcan Research And Development Limited | Electrolytic coloring of anodized aluminum |
JPH0798433B2 (en) * | 1988-07-14 | 1995-10-25 | 富士写真フイルム株式会社 | Method for producing support for lithographic printing plate |
JP5396662B2 (en) * | 2009-02-02 | 2014-01-22 | コロナ工業株式会社 | Composite product of clad material and synthetic resin part and manufacturing method thereof |
CN102268183A (en) * | 2010-06-04 | 2011-12-07 | 鸿富锦精密工业(深圳)有限公司 | Aluminum or aluminum alloy and plastic composite and manufacturing method thereof |
CN103451701B (en) * | 2012-05-28 | 2015-08-26 | 比亚迪股份有限公司 | A kind of surface-treated metal and surface-treated method and metal-resin composite and preparation method thereof |
-
2014
- 2014-12-09 CN CN201410745570.3A patent/CN105729933A/en active Pending
- 2014-12-30 US US14/585,891 patent/US20160160371A1/en not_active Abandoned
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170291393A1 (en) * | 2016-04-08 | 2017-10-12 | Ur Materials Industry (ShenZhen) Co., Ltd. | Composite article and method for making the same |
US10486391B2 (en) * | 2016-12-26 | 2019-11-26 | Honda Motor Co., Ltd. | Bonded structure and method for manufacturing the same |
WO2019039831A1 (en) | 2017-08-25 | 2019-02-28 | 주식회사 플라스탈 | Method for producing metal-polymer resin conjugate |
EP3674052A4 (en) * | 2017-08-25 | 2020-08-26 | Plastal Co., Ltd. | Method for producing metal-polymer resin conjugate |
US11235498B2 (en) * | 2017-08-25 | 2022-02-01 | Plastal Co., Ltd. | Manufacturing method of metal-polymer resin bonded component |
CN109910226A (en) * | 2017-12-12 | 2019-06-21 | 比亚迪股份有限公司 | The surface treatment method and metallic matrix and metal-resin composite and its manufacturing method of metallic matrix |
KR102388883B1 (en) | 2021-01-03 | 2022-04-21 | 박소빈 | process for manufacturing metal-resin composite assembly |
KR20220107340A (en) | 2021-01-25 | 2022-08-02 | 주식회사 플라스탈 | composite assembly of die-cased metal parts and polymer resin and manufacturing method thereof |
KR102327770B1 (en) | 2021-05-06 | 2021-11-18 | 지오네이션 주식회사 | Metal-resin composite and method for manufacturing the same |
CN113561407A (en) * | 2021-07-26 | 2021-10-29 | 怡力精密制造有限公司 | Manufacturing method of composite board, frame and glasses |
Also Published As
Publication number | Publication date |
---|---|
CN105729933A (en) | 2016-07-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20160160371A1 (en) | Metal-and-resin composite and method for making the same | |
US20110305893A1 (en) | Aluminum alloy-and-resin composite and method for making the same | |
US20090317656A1 (en) | Aluminum alloy article with micro-arc oxide for film and method for making the same | |
EP3674052B1 (en) | Method for producing metal-polymer resin conjugate | |
JP6530492B2 (en) | Metal-resin composite, method for producing the same, and shell of electronic product | |
US20120103819A1 (en) | Aluminum article and process for making same | |
CN104786426B (en) | Method for injection molding metal insert and injection molded product of metal insert | |
US20140116883A1 (en) | Surface treatment process for aluminum alloy and aluminum alloy article thereof | |
EP2575145B1 (en) | Electrical insulating cast article and manufacturing method thereof | |
KR102337928B1 (en) | Method for forming anodized film and anodized aluminum containing anodized film formed thereby | |
US8475913B2 (en) | Titanium/titanium alloy-and-resin composite and method for making the same | |
CN1653212A (en) | Magnesium or magnesium alloy article having electroconductive anodic oxidation coating on the surface thereof and method for production thereof | |
CN103966640A (en) | Method for preventing marine microbial corrosion by using artificial super-smooth surface | |
JPWO2014203919A1 (en) | Manufacturing method of magnesium alloy products | |
CN111186072B (en) | Preparation method of metal-resin composite and metal-resin composite | |
US20140034514A1 (en) | Electrolyte for removing metal-carbide/nitride coatings or metal-carbide-nitride coatings and removing method using same | |
KR101731906B1 (en) | Forming method of oxide layer on the surface of metal of cylinder shape or prism shape | |
CN103862748A (en) | Aluminum alloy and polyphenylene sulfide thermal resin composite material as well as preparation method thereof | |
JP6041566B2 (en) | Aluminum composite material and manufacturing method thereof | |
KR101790975B1 (en) | Surface treatment method of aluminium material | |
KR101907204B1 (en) | Anodizing method of object to be treated | |
JP3163163U (en) | Mold | |
CN112440430A (en) | Resin-aluminum alloy composite body, method for producing the same, and case | |
CN103540950B (en) | A kind of preparation method of porous silica lead material | |
KR101790703B1 (en) | Hydrrophobic anodized film and method for forming the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HON HAI PRECISION INDUSTRY CO., LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHANG, HSIN-PEI;CHEN, WEN-RONG;CHIANG, HUANN-WU;AND OTHERS;REEL/FRAME:034601/0362 Effective date: 20141226 Owner name: FU TAI HUA INDUSTRY (SHENZHEN) CO., LTD., CHINA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHANG, HSIN-PEI;CHEN, WEN-RONG;CHIANG, HUANN-WU;AND OTHERS;REEL/FRAME:034601/0362 Effective date: 20141226 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |