CN101670743B - Bicolor basal plate and method for preparing same - Google Patents
Bicolor basal plate and method for preparing same Download PDFInfo
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- CN101670743B CN101670743B CN200810141898A CN200810141898A CN101670743B CN 101670743 B CN101670743 B CN 101670743B CN 200810141898 A CN200810141898 A CN 200810141898A CN 200810141898 A CN200810141898 A CN 200810141898A CN 101670743 B CN101670743 B CN 101670743B
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Abstract
The invention provides a bicolor basal plate and a method for preparing the same. The bicolor basal plate comprises a base material and a film layer covered on the base material, wherein the base material is provided with a protruding area and a non-protruding area; the film layer comprises at least one layer of film; due to the difference between the thicknesses of the film layers on the protruding area and the non-protruding area, the protruding area and the non-protruding area show different colors; and the film layers covered on the protruding area and the non-protruding are made of same materials. The preparation method comprises: processing the base material by one of the processing methods such as chemical etching, punching and die cast so as to form the protruding area and the non-protruding area on the surface of the base material; and performing spluttering treatment on the surface of the base material with the protruding area and the non-protruding area at least once so as to make the thicknesses of the film layers on the protruding area and the non-protruding area differ. The bicolor basal plate has the advantages that: the color selectivity of the product is rich, the anti-wearing property of the color film layer of the product is good, the bonding force of the color film layer to the base material is good, and the method for preparing the bicolor basal plate is simple.
Description
Technical field
The present invention relates to the invention belongs to technical field of surface, relate generally to a kind of bicolor basal plate and preparation method thereof.
Background technology
Trade mark, button etc. are one of surperficial accessories of electronic products such as mobile phone, digital camera, computer, have played important decoration function.Often increase the purpose that film reaches incrustation at present on the surface of electronic product; The available technology adopting multilayer coating is as at substrate surface splash-proofing sputtering metal and metal oxide layer; According to the interference of light principle, control the thickness of metal oxide layer, prepared the metalized substrate of multiple color.But the thickness of this certain metal oxide layer of method can only corresponding a kind of color, can't once obtain the base material of surface for double-colored (two kinds of colors).
For the surface at electronic product reaches double-colored (two kinds of colors) effect; The general vacuum plating that adopts is earlier handled, and obtains first kind of color coating, through obedient gummed paper, spray paint or print corresponding figure is carried out covering protection; Base material is carried out strip to be handled; Make the first kind of color coating that takes off in the zone that do not have covering protection, again base material is carried out the i.e. plating of second kind of color of different colours, obtain second kind of color coating taking off the zone that coating exposes base material like this; Remove obedient gummed paper, spray paint or print the zone that corresponding figure is obtained having first kind of color coating, so just obtained bicolor basal plate.But this method needs strip, twice plated film, covering protection, and technology is loaded down with trivial details, and causes the increase of cost.Simultaneously the adhesion of the wearability of product, two kinds of color intersections and base material is relatively poor.
Summary of the invention
The object of the present invention is to provide a kind of bicolor basal plate and preparation method thereof, the color of this bicolor basal plate is selected abundant, the good bonding strength of the wearability of the color rete of this base material, color rete and base material simultaneously, and the preparation method of this substrate is simple simultaneously.
The present invention provides a kind of bicolor basal plate; Comprise base material and cover the rete on the base material; Protrusion district and non-protruding district are arranged on the said base material; Said rete is at least a skim, and the thicknesses of layers in said protrusion district and the thicknesses of layers difference in non-protruding district make the protrusion district present various colors with non-protruding district, and the said protrusion that covers is distinguished identical with the film material that covers non-protruding district.
The present invention has adopted interference of light principle well known in the art; Promptly when illumination was mapped on the substrate, the reflectivity of base material or film material or the absorptivity of light were different, caused interference of light to take place; Demonstrate colour on the substrate thereby make, the thickness of control rete can obtain various colors.
The preparation method of above-mentioned bicolor basal plate; Adopt a kind of processing method in chemical etching, punching press, the die cast to handle to base material; Make substrate surface form protrusion district and non-protruding district; Substrate surface to containing protrusion district and non-protruding district carries out sputter process at least one time; Sputter process makes the thicknesses of layers in protrusion district different with the thicknesses of layers in non-protruding district, and the thicknesses of layers that protrusion is distinguished and the thicknesses of layers difference in non-protruding district make the protrusion district present various colors with non-protruding district, and the said protrusion that covers is distinguished identical with the film material that covers non-protruding district.
Inventor of the present invention is divided into protrusion district and non-protruding district with bicolor basal plate; When carrying out sputter process; The protrusion district is the different of target-substrate distance with non-protruding offset from the distance of the used target of sputter, thereby causes sputter material different with the sedimentation rate in non-protruding district in the protrusion district, thereby the sputtered layer thickness in protrusion district is different with the sputtered layer thickness in non-protruding district; Therefore, the thicknesses of layers in protrusion district is different with the thicknesses of layers in non-protruding district.
Product colour of the present invention is selected abundant, and the adhesion of the wearability of product colour rete, color rete and base material is good, and the preparation method of this substrate is simple, and a sputter can form double-colored, and manufacturing cost reduces greatly.
The specific embodiment
The present invention provides a kind of bicolor basal plate; Comprise base material and cover the rete on the base material; Protrusion district and non-protruding district are arranged on the said base material; Said rete is at least a skim, and the thicknesses of layers in said protrusion district and the thicknesses of layers difference in non-protruding district make the protrusion district present various colors with non-protruding district, and the said protrusion that covers is distinguished identical with the film material that covers non-protruding district.
Inventor of the present invention finds through a large amount of experiments; Protrusion district and non-protruding offset are that the gap of target-substrate distance is big more from the distance of the used target of sputter, and the thickness difference of the sputtered layer that causes is big more, and the difference of two kinds of colors is obvious more; Can distinguish this two kinds of colors more; When protrusion district is during greater than 1mm than the extrude depth in non-protruding district, product surface concavo-convex too obvious is not suitable for surperficial appearance requirement high product.When protrusion district is during less than 0.1mm than the extrude depth in non-protruding district, the thickness difference of the sputtered layer that causes is too small, and the difference of two kinds of colors is less, can not obviously distinguish this two kinds of colors.Therefore; Preferably; When this bicolor basal plate of preparation; Adopt a sputter to obtain protruding the rete in district and non-protruding district, the thicknesses of layers in protrusion district and the thicknesses of layers difference in non-protruding district make protrusion district and non-protruding district present various colors, and said protrusion district is 0.1-1mm than the thickness of non-protruding district protrusion.
When said rete is a skim, said base material is an extinction material, just can make between base material and the rete to produce interference of light, thereby obtain double-colored base material.
When said rete is at least two tunics, the refractive index of the material of adjacent two tunics is different, when controlling diaphragm layer thickness and refractive index, makes light in the optical path difference of whole rete upper and lower surfaces during for the integral multiple of the wavelength of certain color, and rete promptly is shown as this color.Except the rete that sputter obtains, the rete that the rete of other layer can obtain for common film plating process such as sputter or plating.
Said rete is two tunics, and this two tunic is a kind of in metal level and metal oxide layer, metal level and the nonmetal oxide layer.
Said metal is a kind of in titanium, aluminium, silicon, chromium, the stainless steel, and said metal oxide is a kind of in titanium dioxide, the alundum (Al, and nonmetal oxide is a silica.
Said base material is plastics or metal, and when said base material adopted plastics, said plastics were the common various plastics in this area, like PC, ABS.When said base material adopted metal, used metal was the common various metals in this area, like aluminium alloy, magnesium alloy, stainless steel etc.
A kind of preparation method of bicolor basal plate; Adopt a kind of processing method in chemical etching, punching press, the die cast to handle to base material; Make substrate surface form protrusion district and non-protruding district; The base material that contains protrusion district and non-protruding district is carried out coating surface handle, on base material, form rete, the protrusion district of containing the base material of rete makes protrusion district and non-protruding district present various colors than the extrude depth in non-protruding district.
Said chemical etching, punching press, die cast are the common chemical etching in this area, punching press, die cast, as long as can form sharply marginated protrusion district and non-protruding district.
Only adopt the common magnetron sputtering in this area as an example summary of the invention of the present invention to be described among the present invention.
Adopt medium frequency magnetron sputtering ion plating equipment (Shenzhen shake Industrial Co., Ltd. of Hengchang 800 types) to realize the plating rete.
According to preparation method provided by the invention; Under preferable case; In order to improve the adhesion of rete and base material; The preparation method of said Coating Materials can also comprise base material is carried out before the magnetic controlled sputtering ion plating cleaning and clean activation, said clear be ultrasonic waves for cleaning processing well known in the art; The method of said cleaning activation comprises, under the condition of cleaning activation, with the said base material of the ion bom bardment of inert gas.
Said coating process step air pressure is 1 * 10
-1-2.0 handkerchiefs are preferably 2 * 10
-1-1.0 handkerchiefs.
Said coating process adopts permanent power mode, and the power of said intermediate frequency power supply is the steady state value in the 1-50 kilowatt of scope, is preferably the steady state value in the 5-30 kilowatt of scope, more preferably the 10-20 kilowatt of steady state value that scope is interior.
Said target can be titanium, aluminium, silicon, chromium, stainless steel etc.; Said oxide can be metal oxide and nonmetal oxide, and metal oxide can be titanium dioxide, alundum (Al, and nonmetal oxide is a silica.
When the metal lining oxide membranous layer, in magnetron sputtering apparatus, feed reacting gas, said reacting gas is an oxygen, the flow of said oxygen is 100-800sccm, is preferably 200-600sccm.
The said plated film time is the common plated film time of this area, is generally 1-100 minute;
This technology can obtain the two-color effect of multiple colour match according to the collocation of different metal layer and metal oxide layer or nonmetal oxide layer, and lucuriant in design, metal-like is strong, and adhesion is good.
With the metal level is that titanium and metal oxide layer are that titanium dioxide is example, obtains a series of colors, as shown in table 1:
Table 1
Come further explain of the present invention through specific embodiment below
Embodiment 1
The stainless steel substrate B1 that adopts the process chemical etching and cleaned carries out medium frequency magnetron sputtering ion plating the present invention is described.
The protrusion district of the base material of said stainless steel substrate B1 is 0.7mm than the thickness of non-protruding district protrusion.Said rete is two tunics, layer of titanium metal and titanium dioxide layer.Selected target is the titanium target of purity 99.99%.
B1 is put into vacuum drying oven, close fire door, the open vacuum pump is found time, and is evacuated to 3.0 * 10
-2Handkerchief, feeding argon gas adjustment vacuum is 2.0 handkerchiefs, and bias voltage is 600 volts, and dutycycle 50% is carried out plasma bombardment and is cleaned activation, and the time is 10 minutes.
Feed the working gas argon gas, making vacuum is 3.5 * 10
-1Handkerchief is opened the titanium target power supply, and power is 16kW, and bias voltage is 200V, and dutycycle is 50%, and the time is 6 minutes; Obtain layer of titanium metal.
Feed reacting gas oxygen, making argon gas and oxygen proportion is 1:2.5, and adjustment titanium target power supply power is 14kW, and bias voltage is 150V, and dutycycle is 40%, and the time is 18 minutes, obtains titanium dioxide layer.
Layer of titanium metal the effect here is to form a film system with silicon dioxide layer, and it mainly plays the effect of delustring and reflection.
Close the titanium target power supply; Close grid bias power supply, stop to feed argon gas and oxygen, cool off and came out of the stove in 10 minutes; Non-protruding district of product and protrusion district color are respectively yellow and orange; The Alpha step appearance that adopts U.S. Tencor company to produce is measured, and the thickness of non-protruding district and protrusion district titanium oxide film layer is respectively 116.8nm and 128.2nm, is designated as D1.
Embodiment 2
Employing is carried out medium frequency magnetron sputtering ion plating through over etching and the aluminum alloy base material B2 that cleaned the present invention is described.
The protrusion district of said aluminum alloy base material B2 is 0.8mm than the thickness of non-protruding district protrusion.Said rete is two tunics, layer of titanium metal and silicon dioxide layer.Selected target is the titanium target and the silicon target of purity 99.99%.
B2 is put into vacuum drying oven, close fire door, the open vacuum pump is found time, and is evacuated to 3.0 * 10
-2Handkerchief, feeding argon gas adjustment vacuum is 2.0 handkerchiefs, and bias voltage is 600 volts, and dutycycle 50% is carried out plasma bombardment and is cleaned activation, and the time is 10 minutes.
Feed the working gas argon gas, making vacuum is 3.2 * 10
-1Handkerchief is opened the titanium target power supply, and power is 14kW, and bias voltage is 200V, and dutycycle is 50%, and the time is 7 minutes; Obtain layer of titanium metal.
Close the titanium target power supply, feed reacting gas oxygen, making argon gas and oxygen proportion is 1:2, opens the silicon target power supply, and oxygen and silicon target reaction form silica, and power is 12kW, and bias voltage is 150V, and dutycycle is 40%, and the time is 44 minutes, forms silicon dioxide layer.
Close the silicon target power supply; Close grid bias power supply, stop to feed argon gas and oxygen, cool off and came out of the stove in 10 minutes; Non-protruding district of product and protrusion district color are respectively orange and purplish red; The Alpha step appearance that adopts U.S. Tencor company to produce is measured, and the thickness of non-protruding district and protrusion district silica coating is respectively 198.3nm and 219.5nm, is designated as D2.
Embodiment 3
The plastic basis material B3 that adopts the process punching press and cleaned carries out medium frequency magnetron sputtering ion plating the present invention is described.
The protrusion district of said plastic basis material B3 is 0.7mm than the thickness of non-protruding district protrusion, and said film is the combination for alundum (Al and titanium.Selected target is the titanium target and the aluminium target of purity 99.99%.
B3 is put into vacuum drying oven, close fire door, the open vacuum pump is found time, and is evacuated to 3.0 * 10
-2Handkerchief, feeding argon gas adjustment vacuum is 2.0 handkerchiefs, and bias voltage is 600 volts, and dutycycle 50% is carried out plasma bombardment and is cleaned activation, and the time is 10 minutes.
Feed the working gas argon gas, making vacuum is 3.5 * 10
-1Handkerchief is opened the titanium target power supply, and power is 12kW, and bias voltage is 200V, and dutycycle is 40%, and the time is 8 minutes; Obtain layer of titanium metal.
Close the titanium target power supply, feed reacting gas oxygen, making argon gas and oxygen proportion is 1:3, opens the aluminium target power supply; Oxygen and aluminium target response form alundum (Al, and power is 10kW, and bias voltage is 150V; Dutycycle is 30%, and the time is 21 minutes, generates the alundum (Al layer.
Close the aluminium target power supply; Close grid bias power supply, stop to feed argon gas and oxygen, cool off and came out of the stove in 10 minutes; Non-protruding district of product and protrusion district color are respectively pink and purplish red; The Alpha step appearance that adopts U.S. Tencor company to produce is measured, and the thickness of non-protruding district and protrusion district alundum (Al layer is respectively 199.6nm and 210.2nm, is designated as D3.
Embodiment 4
Embodiment 4 is 28 minutes for only changing the TiO 2 coating film time on the technology basis among the embodiment 1; Want for a long time than the 18 minutes reaction time clock time of embodiment 1; Non-protruding district of the base material that plated film is thick and protrusion district color are respectively blue and green; The Alpha step appearance that adopts U.S. Tencor company to produce is measured, and the thickness of non-protruding district and protrusion district titanium dioxide layer is respectively 176.7nm and 191.8nm, is designated as D4.
Embodiment 5
Embodiment 5 is 1.05mm for the protrusion district that changes base material on the technology basis among the embodiment 1 than the extrude depth in non-protruding district.The Alpha step appearance that adopts U.S. Tencor company to produce is measured, and the thickness of non-protruding district and protrusion district titanium dioxide layer is respectively 107.6nm and 127.3nm, is designated as D5.
Embodiment 6
Embodiment 6 is that technology is identical among the embodiment 1, and difference is that the rete of sputter is a skim, and the composition of this tunic is a titanium dioxide, and described base material is a titanium alloy.The Alpha step appearance that adopts U.S. Tencor company to produce is measured, and the thickness of non-protruding district and protrusion district titanium dioxide layer is respectively 118.4nm and 128.1nm, is designated as D6.
Comparative Examples 1
Adopt present main double-colored trailing to carry out plated film.
The stainless steel substrate that 1) will clean carries out vacuum plating to be handled, and film material is a titanium carbide, and the base material after the plating presents black.
Said vacuum plating black thin film adopts the method for medium frequency magnetron sputtering ion-plating deposition titanium carbide to realize that selected target is the titanium target of purity 99.99%.
Metallic article is put into vacuum drying oven, close fire door, the open vacuum pump is found time, and is evacuated to 3.0 * 10
-2Handkerchief, feeding argon gas adjustment vacuum is 2.0 handkerchiefs, and bias voltage is 600 volts, and dutycycle 50% is carried out plasma bombardment and is cleaned activation, and the time is 10 minutes.
The adjustment argon flow amount, making vacuum is 4.0 * 10
-1Handkerchief feeds reacting gas acetylene, and the initial flow of acetylene gas is 20 standard ml/min; Open the titanium target power supply, power is 13kW, and bias voltage is 200V; Dutycycle is 40%; Adopt incremental manner progressively to increase the acetylene flow, the final flow of acetylene is 100 standard ml/min, and the time is 20 minutes.Close the titanium target, close bias voltage, stop to feed argon gas and acetylene, cool off and come out of the stove after 10 minutes, can obtain black, promptly obtain the base material of first kind of color coating.
2) as required pattern is electroplated protection printing ink (Jia, Shenzhen City virtue sufacing Co., Ltd) to the part of above-mentioned black matrixes through the serigraphy color separation, and corresponding pattern part is protected.
3) base material with above-mentioned processing immerses in the decoating liquid well known in the art, and said moving back crossed liquid as long as can strip and fall titanium carbide, make do not protect partly take off titanium carbide coating, and clean.
4) vacuum plating that base material is different from the step 1) color is handled, and makes the metal surface of not protection part present second kind of color coating, and second kind of color coating is titanium nitride.
Base material is put into stove, close fire door, the open vacuum pump is found time, and is evacuated to 5.0 * 10
-3Handkerchief feeds argon gas, and making vacuum is 3.0 * 10
-1Handkerchief feeds reacting gas nitrogen, and flow is 60 standard ml/min, opens the titanium target power supply, and power is 16kW, and bias voltage is 150V, and dutycycle is 30%, and the time is 25 minutes.Close the titanium target, close bias voltage, stop to feed argon gas and nitrogen, cool off and come out of the stove after 10 minutes, can make not protection part present yellow.
5) wash by the protection printing ink of protection part surface, substrate surface forms the overlay coating with black and yellow two kinds of different colours thus.
Can find out that from the foregoing description and Comparative Examples the resulting product sequence of embodiments of the invention is very simple, coating process is simple, and just can reach the effect of two kinds of different colours through plated film.Than the method that obtains bicolor basal plate in the prior art through twice quality; Not only technology is loaded down with trivial details; And Comparative Examples 1 when secondary film coating in order to protect the performance of last rete; Can not adopt the ion bom bardment activating surface, cause the adhesion of two retes and base material relatively poor, the wearability of rete is also relatively poor than the wearability of embodiment rete simultaneously.Comparatively speaking, the product technology of gained of the present invention is simple, and color combination is abundant, and beautiful in colour, performance is more stable.
Performance test
1, chromatic value is measured:
Adopt the colourity of SP60 series integrating sphere type spectrophotometer test products, obtain L, a, b data.Wherein, L is a luminance component, also can be described as brightness.A, b are chromatic component.
2, wearability test:
Use the RCA paper tape wear resistant instrument of model, have surface that color decorates till expose matrix material, the number of turns that the record rubber wheel rotates in that friction under 175 gram forces is above-mentioned as F350008.
3, adhesion is measured
On the plated film on Coating Materials surface, draw 100 1 millimeter * 1 millimeter square lattice with drawing the lattice device; The model of using Minnesota Mining and Manufacturing Company to produce is 600 smooth being bonded on these grids of adhesive tape; Do not stay a space; Fast this adhesive tape is vertically uncovered, whether the rete of observing cut edge has comes off then.Testing standard is that the demoulding amount is 5B between 0-5%, between 5-10%, is 4B, between 10-20%, is 3B, between 20-30%, is 2B, is 1B between 30-50%, is being 0B more than 50%.
The resulting Coating Materials of embodiment 1-8 is tested according to the method described above, and gained is the result list in the table 2.
Table 2
Can find out from the test result of table 2; According to the combination of substrate product of the present invention through different metal and different oxides; Can obtain the double-colored combination of decorations of more different colours; Lucuriant in design, the adhesion of wearability, rete and base material all increases simultaneously, can be widely used in the decoration of electronic product.
Claims (13)
1. bicolor basal plate; Comprise base material and cover the rete on the base material; Protrusion district and non-protruding district are arranged on the said base material; Said rete is at least a skim, and the thicknesses of layers in said protrusion district and the thicknesses of layers difference in non-protruding district make the protrusion district present various colors with non-protruding district, and the said protrusion that covers is distinguished identical with the film material that covers non-protruding district.
2. described bicolor basal plate of claim 1, said protrusion district is 0.1-1mm than the thickness of non-protruding district protrusion.
3. described bicolor basal plate of claim 1, said rete is a skim, said base material is an extinction material.
4. described bicolor basal plate of claim 1, said rete is at least two tunics, and the refractive index of the material of adjacent two tunics is different.
5. described bicolor basal plate of claim 4, said rete is two tunics, this two tunic is a kind of in metal level and metal oxide layer, metal level and the nonmetal oxide layer.
6. described bicolor basal plate of claim 5, said metal are a kind of in titanium, aluminium, chromium, the stainless steel, and the chemical composition of said metal oxide layer is a kind of in titanium dioxide, the alundum (Al, and the chemical composition of nonmetal oxide layer is a silica.
7. described bicolor basal plate of claim 1, said base material is plastics or metal.
8. the preparation method of a bicolor basal plate; Adopt a kind of processing method in chemical etching, punching press, the die cast to handle to base material; Make substrate surface form protrusion district and non-protruding district; Substrate surface to containing protrusion district and non-protruding district carries out sputter process at least one time; Sputter process makes the thicknesses of layers in protrusion district different with the thicknesses of layers in non-protruding district, and the thicknesses of layers that protrusion is distinguished and the thicknesses of layers difference in non-protruding district make the protrusion district present various colors with non-protruding district, and the said protrusion that covers is distinguished identical with the film material that covers non-protruding district.
9. the preparation method of the described bicolor basal plate of claim 8, said protrusion district is 0.1-1mm than the thickness of non-protruding district protrusion.
10. the preparation method of the described bicolor basal plate of claim 8, said rete is a skim, said base material is an extinction material.
11. the preparation method of the described bicolor basal plate of claim 8, said rete is at least two tunics, and the refractive index of the material of adjacent two tunics is different.
12. the preparation method of the described bicolor basal plate of claim 11, said rete is two tunics, and this two tunic is a kind of in metal level and metal oxide layer, metal level and the nonmetal oxide layer.
13. the preparation method of the described bicolor basal plate of claim 12; Said metal is a kind of in titanium, aluminium, chromium, the stainless steel; The chemical composition of said metal oxide layer is a kind of in titanium dioxide, the alundum (Al, and the chemical composition of metal oxide layer is a silica.
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| CN103540942B (en) * | 2012-07-10 | 2017-08-25 | 深圳富泰宏精密工业有限公司 | Metal matrix surface treatment method and its product |
| CN102922938B (en) * | 2012-09-21 | 2014-12-17 | 赵赫 | Manufacturing method of plate painting with a convex pattern |
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| CN111791024A (en) * | 2020-06-01 | 2020-10-20 | 肇庆宏旺金属实业有限公司 | Method for processing common sand super-black steel stainless steel plate |
| CN111549315B (en) * | 2020-06-23 | 2022-08-12 | 中建材玻璃新材料研究院集团有限公司 | Rapid prefabrication method for multiple colors of single-layer structure colored glass |
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