CN106311565A - Electrostatic spraying method for complex of metal and non-conducting material and shell - Google Patents
Electrostatic spraying method for complex of metal and non-conducting material and shell Download PDFInfo
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- CN106311565A CN106311565A CN201510385628.2A CN201510385628A CN106311565A CN 106311565 A CN106311565 A CN 106311565A CN 201510385628 A CN201510385628 A CN 201510385628A CN 106311565 A CN106311565 A CN 106311565A
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- conducting material
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Abstract
An electrostatic spraying method for a complex of metal and a non-conducting material includes the following steps that a matrix is provided, and the matrix is the complex of the metal and the non-conducting material; a nanometer conductive agent is provided, and at least the area, corresponding to the non-conducting material, of one surface of the matrix and the area where the metal and the non-conducting material are combined are coated with the nanometer conductive agent; the nanometer conductive agent is dried so that a conductive film layer can be formed on the surface; electrostatic powder spraying is performed on the surface provided with the conductive film layer; and the matrix where powder coating adheres to is baked, so that the powder coating can be heated, subjected to levelling and cured to form a coating which is firmly combined with the matrix. The invention further provides a shell prepared through the above method.
Description
Technical field
The electrostatic coating method that the present invention relates to the complex of a kind of metal and non-conducting material and the housing prepared by the method.
Background technology
In life, electronic product is widely used.The base material of the conventional housing used by electronic product is mostly conductive metal material, therefore can use more environmental protection and simple electrostatic coating method when application.In the last few years, metal was more and more extensive with what the complex of plastic was applied in electronic product.But, owing to plastic is non-conducting material, the powder charged when carrying out electrostatic spraying cannot be attached on plastic.
Summary of the invention
In view of this, it is necessary to a kind of electrostatic coating method that can be applied to metal and the complex of non-conducting material is provided.
It addition, there is a need to provide a kind of housing prepared by said method.
A kind of metal and the electrostatic coating method of the complex of non-conducting material, comprise the steps: to provide a matrix, and this matrix is the complex of metal and non-conducting material；One conductive nano agent is provided and this conductive nano agent is at least coated the region of this matrix one surface correspondence non-conducting material and region that metal combines with non-conducting material；It is dried this conductive nano agent to form a conductive film layer on a surface；This surface with conductive film layer is carried out electrostatic powder coating；The matrix being attached with powdery paints is toasted so that powdery paints is heated levelling solidify to form a coating and be combined with matrix securely.
Housing prepared by a kind of method from the above mentioned, this housing includes a matrix, a conductive film layer and a coating, one surface of this matrix is coated with by this coating, this matrix is the complex of metal and non-conducting material, this conductive film layer is formed between matrix and coating, and the region that this conductive film layer combines with non-conducting material at least formed on region and the metal of the surface correspondence non-conducting material of this matrix.
The region that the electrostatic coating method of the present invention combines with non-conducting material at non-conducting material and metal in advance forms a conductive film layer, so that charged powdery paints can be incorporated into the surface of metal and the complex of non-conducting material.
Accompanying drawing explanation
Fig. 1 is the metal schematic diagram with the electrostatic coating method of the complex of non-conducting material of embodiment of the present invention.
Fig. 2 is the metal schematic diagram with the electrostatic coating method of the complex of non-conducting material of another embodiment.
Fig. 3 is the partial side schematic view of housing prepared by the method shown in Fig. 1.
Fig. 4 is the partial side schematic view of housing prepared by the method shown in Fig. 2.
Main element symbol description
| Matrix | 10 |
| Surface | 101 |
| Metal portion | 11 |
| Non-conducting material portion | 13 |
| Conductive film layer | 30 |
| Static gun | 40 |
| Powdery paints | 50 |
| Coating | 60 |
| Housing | 100 |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Fig. 1 and Fig. 2 illustrates the electrostatic coating method of the metal of the present invention and the complex of non-conducting material, and it comprises the following steps:
Step S1, providing a matrix 10, this matrix 10 is the complex of metal and non-conducting material, including metal portion 11 and non-conducting material portion 13.In the present embodiment, the material in this metal portion 11 is magnesium alloy, and the material in this non-conducting material portion 13 is plastics.In other embodiments, the material in this non-conducting material portion 13 includes plastic and glass fiber.More specifically, these plastics are polyphenylene sulfide (PPS), and polyphenylene sulfide is 11:9 with the weight ratio of glass fibre.
Step S2, surface 101 to matrix 10 are cleaned.
Step S3, a conductive nano agent is provided and this conductive nano agent is at least coated the region in corresponding non-conducting material portion 13, surface 101 of matrix 10 and on region that metal portion 11 combines with non-conducting material portion 13.Containing one or more in the nanometer conductive materials such as titanium oxide, nickel oxide, stannum oxide and CNT in this conductive nano agent.By the way of described conductive nano agent can pick rear wiping by using sponge or non-dust cloth or the mode of spraying is at least coated on region described in described surface 101.In present embodiment, referring to Fig. 1, described conductive nano agent is coated on the whole surface 101 of matrix 10.In other embodiments, refer to Fig. 2, on the region that the region in corresponding non-conducting material portion 13, surface 101 is only coated in described conductive nano agent and metal portion 11 combines with non-conducting material portion 13.
Step S4, dry described conductive nano agent are at least to form a conductive film layer 30 on region described in described surface 101.In present embodiment, by placing 4 ~ 5min under matrix 10 room temperature with conductive nano agent, conductive nano agent is made to be dried and be formed conductive film layer 30.Wherein, add the time of this drying stage when standing time is more than 5min, reduce production efficiency.
Step S5, the surface 101 with conductive film layer 30 is carried out electrostatic powder coating, with attaching powder coating 50 equably on the surface 101 with conductive film layer 30.In present embodiment, utilize static gun 40 that the surface 101 with conductive film layer 30 is carried out electrostatic powder coating.Described powdery paints 50 includes epoxy resin, barium sulfate and pyromellitic acid anhydride.
Step S6, refer to Fig. 3, the matrix 10 being attached with powdery paints 50 is toasted so that the particles by heat levelling of powdery paints 50 also solidifies, thus forms a coating 60 being combined with matrix 10.May be appreciated, when on the whole surface 101 that described matrix 10 is coated in described conductive nano agent, the conductive film layer 30 that described conductive nano agent is formed after drying is also formed on the whole surface 101 of described matrix 10, described powdery paints 50 is attached on conductive film layer 30, and the described coating 60 formed after the baking of described powdery paints 50 is formed on conductive film layer 30 and (refers to Fig. 3).When described conductive nano agent is only coated on region described in surface 101, the conductive film layer 30 that described conductive nano agent is formed after drying is the most only formed on region described in surface 101, described powdery paints 50 is attached on this conductive film layer 30 and this surface 101 is except the other parts of this conductive film layer 30, and the described coating 60 formed after the baking of described powdery paints 50 is formed on this conductive film layer 30 and this surface 101 is except the other parts (referring to Fig. 4) of this conductive film layer 30.Concrete, the temperature of baking is 160 ~ 200 DEG C, and baking time is 15 ~ 20min.Preferably, this baking temperature is 190 DEG C, and baking time is 18min.Wherein, this matrix 10 baking temperature be up to 220 DEG C the most indeformable.This coating 60 can be additionally used in the blind crack covered on matrix 10.
Wherein, the conductive film layer 30 formed after drying nano conductive agent in step S4 will not produce bubble when being heated, thus the bubble produced in conductive nano agent when step S6 is toasted can be avoided to enter coating 60 and make coating 60 out-of-flatness.Meanwhile, electrostatic spraying powder coating 50 on the conductive film layer 30 formed after drying nano conductive agent, can avoid causing coating 60 that the situation of current mark occurs when step S6 is toasted due to undried conductive nano agent.
The coating 60 forming said method carries out adhesive force test.Concrete, utilize cross-cut tester or hundred grids to cut out the grid of area equation on coating 60 surface, then clean down the surface of the coating after cutting 60 with hairbrush, then attach the surface of coating 60 with adhesive tape and pull open again, record the area that comes off of coating 60 less than or equal to 5%.That is, if the adhesive force of coating 60 is divided by ASTM standard grade, its adhesive force is more than or equal to 4B.
Referring to Fig. 3 and Fig. 4, housing 100 prepared by a kind of said method, it can be applicable in an electronic installation (such as mobile phone, panel computer, multimedia player etc., not shown).This housing 100 includes matrix 10, conductive film layer 30 and a coating 60.This matrix 10 is the complex of metal and non-conducting material, and it includes metal portion 11, non-conducting material portion 13 and the surface 101 being collectively forming by this metal portion 11 and this non-conducting material portion 13.The region that this conductive film layer 30 combines with non-conducting material portion 13 at least formed on region and the metal portion 11 in the corresponding non-conducting material portion 13, surface 101 of this matrix 10.This conductive film layer 30 is dried by conductive nano agent and forms.This coating 60 is formed at the surface 101 with described conductive film layer 30.This coating 60 includes epoxy resin, barium sulfate and pyromellitic acid anhydride.In present embodiment, referring to Fig. 3, described conductive film layer 30 is formed on the whole surface 101 of described matrix 10, and described coating 60 is formed on conductive film layer 30.In other embodiments, refer to Fig. 4, the region that described conductive film layer 30 is only formed at the region in the corresponding non-conducting material portion 13 on surface 101 and metal portion 11 combines with non-conducting material portion 13, described coating 60 is formed on this conductive film layer 30 and this surface 101 is except the other parts of this conductive film layer 30.
It is understood that for the person of ordinary skill of the art, can conceive according to the technology of the present invention and make other various corresponding changes and deformation, and all these change all should belong to the protection domain of the claims in the present invention with deformation.
Claims (10)
1. metal and an electrostatic coating method for the complex of non-conducting material, comprise the steps:
Thering is provided a matrix, this matrix is the complex of metal and non-conducting material, and it includes a surface；
One conductive nano agent is provided and this conductive nano agent is at least coated the region of described surface correspondence non-conducting material of this matrix and region that metal combines with non-conducting material；
It is dried this conductive nano agent at least to form a conductive film layer on the described region on this surface；
This surface with conductive film layer is carried out Electrostatic Spraying of powder Coatings and is coated with attaching powder coating；
The matrix being attached with powdery paints is toasted so that powdery paints is heated levelling solidifying, thus forms a coating being combined with matrix.
2. the electrostatic coating method of the complex of metal as claimed in claim 1 and non-conducting material, it is characterised in that: this metal is magnesium alloy, and this non-conducting material includes plastic and glass fiber.
3. the electrostatic coating method of the complex of metal as claimed in claim 2 and non-conducting material, it is characterised in that: these plastics are polyphenylene sulfide, and the weight ratio of polyphenylene sulfide and glass fibre is 11:9.
4. the electrostatic coating method of the complex of metal as claimed in claim 1 and non-conducting material, it is characterised in that: this conductive nano agent coats described region by the way of using sponge or non-dust cloth to pick rear wiping.
5. the electrostatic coating method of the complex of metal as claimed in claim 1 and non-conducting material, it is characterised in that: this conductive film layer is dried after being placed 4 ~ 5min at normal temperatures by conductive nano agent and is formed.
6. the electrostatic coating method of the complex of metal as claimed in claim 1 and non-conducting material, it is characterised in that: this powdery paints comprises epoxy resin, barium sulfate and pyromellitic acid anhydride.
7. the electrostatic coating method of the complex of metal as claimed in claim 1 and non-conducting material, it is characterised in that: the temperature of this baking is 160 ~ 200 DEG C, and the time is 15 ~ 20min.
8. a housing, it is characterized in that: this housing includes a matrix, a conductive film layer and a coating, this matrix is the complex of metal and non-conducting material, it includes a surface, the region that this conductive film layer combines with non-conducting material at least formed on region and the metal of the described surface correspondence non-conducting material of this matrix, this coating is formed on the described surface with described conductive film layer.
9. housing as claimed in claim 8, it is characterised in that: described conductive film layer is formed on the whole surface of described matrix, and described coating is formed on conductive film layer.
10. housing as claimed in claim 8, it is characterized in that: the region that described conductive film layer is only formed at the region of the corresponding non-conducting material on surface and metal combines with non-conducting material, described coating is formed on this conductive film layer and this surface is except the other parts of this conductive film layer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510385628.2A CN106311565A (en) | 2015-06-30 | 2015-06-30 | Electrostatic spraying method for complex of metal and non-conducting material and shell |
| TW104122767A TWI616237B (en) | 2015-06-30 | 2015-07-14 | Electrostatic spraying method for making metal-and-non-conductive material composite, and housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510385628.2A CN106311565A (en) | 2015-06-30 | 2015-06-30 | Electrostatic spraying method for complex of metal and non-conducting material and shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106311565A true CN106311565A (en) | 2017-01-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510385628.2A Pending CN106311565A (en) | 2015-06-30 | 2015-06-30 | Electrostatic spraying method for complex of metal and non-conducting material and shell |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106311565A (en) |
| TW (1) | TWI616237B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109877024A (en) * | 2019-04-15 | 2019-06-14 | 苏州福慧材料科技有限公司 | A kind of electrostatic painting process of solar energy backboard |
| CN110577660A (en) * | 2019-08-14 | 2019-12-17 | 佛山宜可居新材料有限公司 | organic polymer material and coating method thereof |
| CN111921808A (en) * | 2020-08-13 | 2020-11-13 | 上海市富力达科技股份有限公司 | Powder spraying method for carbon fiber composite material plate |
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| JPS57180638A (en) * | 1981-05-01 | 1982-11-06 | Nippon Paint Co Ltd | Method for coating frp article |
| CN1032447A (en) * | 1987-09-25 | 1989-04-19 | 聚塑料株式会社 | The plastic static coating is with conductive agent and have the plastic molded product of electrostatic coating |
| CN1151910A (en) * | 1995-10-02 | 1997-06-18 | 拜尔公司 | Process for electrostatic lacquering of non-conductive surfaces |
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| CN1962076A (en) * | 2005-11-08 | 2007-05-16 | 佛山市顺德区汉达精密电子科技有限公司 | Process for electrostatic coating of rubber surface |
| CN1962078A (en) * | 2005-11-08 | 2007-05-16 | 佛山市顺德区汉达精密电子科技有限公司 | Process for electrostatic coating on plastic surface |
| EP2163146A2 (en) * | 2007-05-24 | 2010-03-17 | Basf Se | Method for the production of polymer-coated metal foils, and use thereof |
| TW201041482A (en) * | 2009-05-15 | 2010-11-16 | Foxconn Tech Co Ltd | Housing and method for making the same |
| TW201041483A (en) * | 2009-05-15 | 2010-11-16 | Foxconn Tech Co Ltd | Housing and method for making the same |
| ITTO20120981A1 (en) * | 2012-11-13 | 2014-05-14 | Itt Italia Srl | METHOD AND PLANT FOR POWDER COATING OF ELECTRICALLY NON-CONDUCTIVE ELEMENTS, IN PARTICULAR BRAKE PADS |
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- 2015-06-30 CN CN201510385628.2A patent/CN106311565A/en active Pending
- 2015-07-14 TW TW104122767A patent/TWI616237B/en active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS57180638A (en) * | 1981-05-01 | 1982-11-06 | Nippon Paint Co Ltd | Method for coating frp article |
| CN1032447A (en) * | 1987-09-25 | 1989-04-19 | 聚塑料株式会社 | The plastic static coating is with conductive agent and have the plastic molded product of electrostatic coating |
| CN1151910A (en) * | 1995-10-02 | 1997-06-18 | 拜尔公司 | Process for electrostatic lacquering of non-conductive surfaces |
| CN102036799A (en) * | 2008-05-19 | 2011-04-27 | 尤洛考普特公司 | Method for manufacturing electrically non-conductive painted substrate |
| CN103158226A (en) * | 2011-12-15 | 2013-06-19 | 鸿富锦精密工业（深圳）有限公司 | Preparation method for metal-plastic complex and complex |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109877024A (en) * | 2019-04-15 | 2019-06-14 | 苏州福慧材料科技有限公司 | A kind of electrostatic painting process of solar energy backboard |
| CN110577660A (en) * | 2019-08-14 | 2019-12-17 | 佛山宜可居新材料有限公司 | organic polymer material and coating method thereof |
| CN110577660B (en) * | 2019-08-14 | 2020-07-31 | 佛山宜可居新材料有限公司 | Organic polymer material and coating method thereof |
| CN111921808A (en) * | 2020-08-13 | 2020-11-13 | 上海市富力达科技股份有限公司 | Powder spraying method for carbon fiber composite material plate |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201709986A (en) | 2017-03-16 |
| TWI616237B (en) | 2018-03-01 |
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Application publication date: 20170111 |
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