CN105441912B - The preparation method of non-conductive film with metallic luster - Google Patents
The preparation method of non-conductive film with metallic luster Download PDFInfo
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- CN105441912B CN105441912B CN201410417753.2A CN201410417753A CN105441912B CN 105441912 B CN105441912 B CN 105441912B CN 201410417753 A CN201410417753 A CN 201410417753A CN 105441912 B CN105441912 B CN 105441912B
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- conductive film
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Abstract
A kind of preparation method of the non-conductive film with metallic luster, step include：A reactant containing silver ion and a reducing agent are sprayed respectively, the reactant and the reducing agent is mixed and is sprayed on a substrate surface and forms a silver metal layer；Wherein：The concentration of silver ion is between 0.002 to 0.01mol/L when the reactant and the reducing agent mix, to reduce to form the discontinuous metallic silver of island in the substrate surface.
Description
Technical field
The present invention relates to a kind of method of surface treatment, more particularly to a kind of system of the non-conductive film with metallic luster
Method.
Background technology
Existing mobile communication device, such as enabled handheld phones, have built-in antenna can receive and transmit signal.Due to
When antenna is coated in metal shell, metal shell can produce electromagnetic wave shielding action, and potato masher antenna receives and transmission news
Number, influence communication quality.Therefore, the housing of mobile communication device should not be made using metal material.
But, in order to make the case surface of mobile communication device that there is the texture of metallic luster to increase beauty, at present
Have using non-conductive vacuum plating (Non Conductive Vacuum Metallization, abbreviation NCVM) technology, moulding
Material substrate surface forms nonconducting metal layer.However, vacuum plating processing procedure needs to use vacuum equipment and production process is more
Complexity, cost of manufacture are higher.
Furthermore although now with silver mirror spray technique metal film can be formed in the spraying plating of plastic basis material surface, but reduce plating
The cost of film simultaneously makes plastic basis material surface have metallic luster, but because the metal film that existing spray technique is formed can be conductive,
Can still shielding be produced on electromagnetic wave and influence communication quality, so the technology of this current metallic sprayed coating can not yet be used and made
In the processing procedure of mobile communication device shell.
The content of the invention
It is an object of the invention to provide a kind of system for the non-conductive film with metallic luster that can reduce manufacture cost
Method.
The present invention has the preparation method of the non-conductive film of metallic luster, and step includes：Sprinkling one contains the anti-of silver ion respectively
Agent and a reducing agent are answered, the reactant and the reducing agent is mixed and is sprayed on a substrate surface and forms a silver metal layer；Wherein：
The concentration of silver ion is between 0.002 to 0.01mol/L when the reactant and the reducing agent mix, with the substrate surface also original shape
Into the discontinuous metallic silver of island.
The preparation method of non-conductive film of the present invention with metallic luster, the thickness of the silver metal layer are not more than 1 μm.
The preparation method of non-conductive film of the present invention with metallic luster, wherein：Before the spraying plating silver metal layer,
The substrate surface elder generation spray-applied primer forms a prime coat, and the priming paint layer thickness is preferable between 10 to 15 μm.
The preparation method of non-conductive film of the present invention with metallic luster, wherein：Spraying can be saturating on the silver metal layer
The floating coating of light forms a floating coating layer, and the floating coating layer thickness is preferable between 8 to 12 μm.
The preparation method of non-conductive film of the present invention with metallic luster, wherein：On the floating coating layer spray to
The finishing coat of the floating coating layer and light-permeable is protected to form a top coat layer, the finishing coat layer thickness is preferable between 10 to 20 μm.
The preparation method of non-conductive film of the present invention with metallic luster, wherein：The silver metal layer is in the base material table
Repeatedly spraying is formed back and forth in face.
The beneficial effects of the present invention are：Nonconducting silver metal layer can be formed using spraying plating mode, can not only had
Metallic luster and electromagnetic wave will not be shielded, thus the processing procedure of mobile communication device shell can be used for.Furthermore compared to NCVM systems
The advantages of journey, can not only simplify process can simultaneously be greatly reduced equipment cost, and have energy conservation and environmental protection, easy maintenance.Further
Ground, can combine existing spray painting processing procedure, the i.e. making of prime coat, floating coating layer and top coat layer, so as to form the spraying plating of continous way
Producing line, is substantially improved prouctiveness.
Brief description of the drawings
Fig. 1 is a process block diagram, illustrates that the present invention has an embodiment of the preparation method of the non-conductive film of metallic luster
Step；
Fig. 2 is a flow diagram, illustrates the formation order of the embodiment layer structure；
Fig. 3 is a schematic diagram, illustrates to spray the step of forming silver metal layer in the embodiment with double head spray gun；And
Fig. 4 is the photo of a silver metal layer of the embodiment captured by one scan formula electron microscope.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and embodiments.
Refering to Fig. 1 and Fig. 2, the present invention has an embodiment of the preparation method of the non-conductive film of metallic luster, and step includes：
First in step 101, a base material 1 is prepared, base material 1 is plate-like, can be the housing of mobile communication device, with insulation
Material is made preferably, such as makrolon (PC), makrolon (PC)/acrylonitrile-butadiene-styrene copolymer (ABS) close
Gold, glass fibre (GF) strengthen makrolon (PC) composite material, glass, ceramics etc..
In step 102, clean base material 1 surface, to remove the dirty and impurity on 1 surface of base material, in the present embodiment, be with
Absolute ethyl alcohol clean surface.
And after in step 103, form a prime coat 2 in 1 surface spraying priming paint of base material, 2 thickness of prime coat preferably between
10 to 15 μm, to flatten 1 surface of base material, that is, using prime coat 2 more even curface is formed, be conducive to follow-up silver metal
The coating of layer 3, and increases the adhesive force of silver metal layer 3, if however, do not form prime coat 2 can also.
Separately coordinate again refering to Fig. 3, in step 104, by prepare one reactant A and a reducing agent containing silver ion
B, is sprayed respectively with double head spray gun 6, so that reactant A and reducing agent B mixing is sprayed on 2 surface of prime coat (if without prime coat 2
On 1 surface of base material), and a silver metal layer 3 is formed as shown.Specifically, the composition of reactant A is Ag (NH3)2OH·XH2O；The composition of reducing agent B may be selected from the aldehyde materials such as formaldehyde, glyoxal, glucose, maltose, fructose and tartaric acid,
Formic acid, tartrate, formates, sodium potassium tartrate tetrahydrate, hydrazine sulfate, sodium borohydride, ethanol, sodium hydroxide and foregoing combination.When
The concentration of silver ion is between 0.002 to 0.01mol/L when reactant A and reducing agent B are mixed, with 2 surface of prime coat (if bottomless
Enamelled coating 2 is then on 1 surface of base material) reduction form the discontinuous metallic silver 31 of island.In the present embodiment, the hydraulic pressure 0.5 of spray gun 6 to
1.5kgf/cm2, air pressure 1.5 to 3.0kgf/cm2, repeatedly spray on 2 surface of prime coat, gradually add up on 2 surface of prime coat back and forth
The metallic silver 31 of reduction, and nonconducting silver metal layer 3 is formed, the thickness of silver metal layer 3 is not more than 1 μm.If Fig. 4 is with scan-type
Sample photo captured by electron microscope (SEM) shows that the silver metal layer 3 of the present embodiment is discontinuous by island (graininess)
Metallic silver 31 is formed, and since 31 particle of metallic silver does not connect continuously but arranges comparatively dense, so making the silver of the present embodiment
Metal layer 3 can be still non-conductive with metallic luster.By to spraying mixed liquor in concentration of silver ions control, i.e., between
0.002 to 0.01mol/L, plated film can be completed under reasonable efficiency and make film layer non-conductive, if being less than concentration limit, although still
Metal layer can be formed, but the metallic luster effect of metal layer is deteriorated and reaction time double increase, is not suitable for spraying plating processing procedure, if high
In upper limit of concentration, then non-conductive metal layer cannot be formed.Compared to NCVM processing procedures, the present embodiment is formed using spray technique and not led
Electricity silver metal layer, can not only simplify process can simultaneously be greatly reduced equipment cost, and have energy conservation and environmental protection, easy maintenance it is excellent
Point.
Referring again to Fig. 1 and Fig. 2, further, as shown in step 106, can be sprayed on silver metal layer 3 in light-permeable
Japanning forms a floating coating layer 4, and 4 thickness of floating coating layer is preferably between 8 to 12 μm.Floating coating layer 4 can have color, i.e., transparent
Color, allows the appearance on 1 surface of base material to have color and has metallic luster concurrently.That is, floating coating layer 4 can be used to outside adjustment
Color is seen, increase is decorative.
In addition, as shown in step 107, can also be sprayed on floating coating layer 4 to protect the face of floating coating layer 4 and light-permeable
Paint, to form a top coat layer 5,5 thickness of top coat layer is preferably between 10 to 20 μm.
Floating coating layer 4 and top coat layer 5 are also optionally to be coated with, if can't shadow without floating coating layer 4 and top coat layer 5
Ring the decorative effect of metallic luster caused by silver metal layer 3.
Foregoing priming paint, floating coating, finishing coat can use existing material, be no longer described in detail in this.
Since silver metal layer 3 uses spraying plating mode to be formed, and existing spray painting processing procedure can be combined, i.e. prime coat 2, floating coating
The making of layer 4 and top coat layer 5, so as to form the spraying plating producing line of continous way, is substantially improved prouctiveness.
The non-conductive film that the present embodiment is formed includes prime coat 2, silver metal layer 3, floating coating layer 4 and top coat layer 5, utilizes hundred
Lattice method of testing carries out adhesive force test to non-conductive film, can meet the requirement more than 3B grades.
In conclusion the present embodiment can form nonconducting silver metal layer 3 using spraying plating mode, there can not only be metal
Gloss and electromagnetic wave will not be shielded, thus the processing procedure of mobile communication device shell can be used for.Furthermore compared to NCVM processing procedures, no
The advantages of process, which can only be simplified, can simultaneously be greatly reduced equipment cost, and have energy conservation and environmental protection, easy maintenance.Further, energy
With reference to existing spray painting processing procedure, the i.e. making of prime coat 2, floating coating layer 4 and top coat layer 5, so as to form the spraying plating production of continous way
Line, is substantially improved prouctiveness.
Claims (9)
1. a kind of preparation method of the non-conductive film with metallic luster, step include：A reactant containing silver ion is sprayed respectively
And a reducing agent, the reactant and the reducing agent is mixed and is sprayed on a substrate surface and forms a silver metal layer；Its feature exists
In：The concentration of silver ion is between 0.002 to 0.01mol/L when the reactant and the reducing agent mix, with the substrate surface also
Original shape is into the discontinuous metallic silver of island.
2. the preparation method of the non-conductive film according to claim 1 with metallic luster, it is characterised in that：The silver metal layer
Thickness is not more than 1 μm.
3. the preparation method of the non-conductive film according to claim 1 with metallic luster, it is characterised in that：In spraying plating silver gold
Before belonging to layer, a prime coat is formed in the substrate surface elder generation spray-applied primer.
4. the preparation method of the non-conductive film according to claim 3 with metallic luster, it is characterised in that：The priming paint layer thickness
Between 10 to 15 μm.
5. the preparation method of the non-conductive film with metallic luster according to claim 1 or 3, it is characterised in that：In silver gold
Belong to the floating coating one floating coating layer of formation that light-permeable is sprayed on layer.
6. the preparation method of the non-conductive film according to claim 5 with metallic luster, it is characterised in that：The floating coating thickness
Degree is between 8 to 12 μm.
7. the preparation method of the non-conductive film according to claim 5 with metallic luster, it is characterised in that：In the floating coating layer
It is upper to spray to protect the finishing coat of the floating coating layer and light-permeable to form a top coat layer.
8. the preparation method of the non-conductive film according to claim 7 with metallic luster, it is characterised in that：The finishing coat layer thickness
Between 10 to 20 μm.
9. the preparation method of the non-conductive film according to claim 1 with metallic luster, it is characterised in that：The silver metal layer is
In the substrate surface, repeatedly spraying is formed back and forth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410417753.2A CN105441912B (en) | 2014-08-22 | 2014-08-22 | The preparation method of non-conductive film with metallic luster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410417753.2A CN105441912B (en) | 2014-08-22 | 2014-08-22 | The preparation method of non-conductive film with metallic luster |
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| Publication Number | Publication Date |
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| CN105441912A CN105441912A (en) | 2016-03-30 |
| CN105441912B true CN105441912B (en) | 2018-05-15 |
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| US20210121952A1 (en) * | 2017-06-06 | 2021-04-29 | Hewlett-Packard Development Company, L.P. | Cover for devices |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201189798Y (en) * | 2008-03-06 | 2009-02-04 | 陈维钏 | Decorative film with metal texture |
| CN201194453Y (en) * | 2008-05-07 | 2009-02-11 | 比亚迪股份有限公司 | Housing with decorative layer |
| CN101469427A (en) * | 2007-12-28 | 2009-07-01 | 汪正红 | Nano spray plating technique for silver mirror |
| CN101942636A (en) * | 2009-07-06 | 2011-01-12 | 亚汉科技股份有限公司 | Multilayered composite coated film, manufacturing method thereof and substrate with same |
| CN102127758A (en) * | 2010-01-13 | 2011-07-20 | 阮志达 | Silver plating process on workpiece surface |
-
2014
- 2014-08-22 CN CN201410417753.2A patent/CN105441912B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101469427A (en) * | 2007-12-28 | 2009-07-01 | 汪正红 | Nano spray plating technique for silver mirror |
| CN201189798Y (en) * | 2008-03-06 | 2009-02-04 | 陈维钏 | Decorative film with metal texture |
| CN201194453Y (en) * | 2008-05-07 | 2009-02-11 | 比亚迪股份有限公司 | Housing with decorative layer |
| CN101942636A (en) * | 2009-07-06 | 2011-01-12 | 亚汉科技股份有限公司 | Multilayered composite coated film, manufacturing method thereof and substrate with same |
| CN102127758A (en) * | 2010-01-13 | 2011-07-20 | 阮志达 | Silver plating process on workpiece surface |
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| CN105441912A (en) | 2016-03-30 |
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