CN105255301A - Anti-fingerprint nano-coating - Google Patents
Anti-fingerprint nano-coating Download PDFInfo
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- CN105255301A CN105255301A CN201510550726.7A CN201510550726A CN105255301A CN 105255301 A CN105255301 A CN 105255301A CN 201510550726 A CN201510550726 A CN 201510550726A CN 105255301 A CN105255301 A CN 105255301A
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Abstract
The present invention provides an anti-fingerprint nano-coating comprising a hydrophobic nanometer material coating formed on the surface of a base to be coated, an oleophobic nanometer material coating or a nanometer material coating with both super hydrophobic property and oleophobic property. The hydrophobic nanometer material coating comprises polymer nanofibers, organic silicon nano coating and super hydrophobic material, preferably nano-material with both super hydrophobic property and oleophobic property. The thicknesses of the hydrophobic nanometer material coating, the oleophobic nanometer material coating or a nanometer material coating with both super hydrophobic property and oleophobic property are less than 1 micrometer, preferably in a range of 0.1-0.5 micrometer. The anti-fingerprint nano-coating contains no heavy metal chromium, needs no acid treatment or alkali treatment, and is beneficial for environment protection and human health. Moreover, the anti-fingerprint nano-coating can be used in metal and nonmetal bases.
Description
Technical field
The invention relates to a kind of case surface for 3C electronic product and resist fingerprinted nano coating, particularly do not contain chromium about one, the surface of environmental protection resists fingerprinted nano coating.
Background technology
In recent years, human consumer requires more and more higher for the various 3C electronic product such as mobile phone, computer, notebook computer, personal digital assistant.Except have more, more except powerful, also requirements at the higher level are proposed to product casing.Such as, shell protection against corrosion, rust protection, dust-proof, the technical requirements of anti-fingerprint (anti-fingerprint) is also proposed recently.
In conventional art, early stage anti-fingerprintization is generally adopt on zinc coating, form chromate coating and special tree resin layer.As shown in Figure 1, proposed by people such as AkiraMastsuda, a kind of RZ-F galvanized steel, it is in stainless steel 11 surface cleaning and after completing zinc-plated step, form the zinc coating 12 that thickness h 1 is about 3 microns, impose chromic salt (chromate) process again, finally plate resin in roll extrusion mode, to obtain thickness h 2 be the chromate coating 13 of 0.01 ~ 0.1 micron and thickness h 3 is the tree resin layer 14 of 0.3 ~ 1.0 micron.After this process, this galvanized steel has stronger erosion resistance and excellent anti-fingerprinted performance energy.Refer in detail " ChromateElectrogalvanizedSteelSheet " RIVERZINCF " withAnti-fingerprintPropertyandHighCorrosionResistance ", KawasakiSteelTechnicalReportyNo.12, July1985.
But above method need use chromic salt process, its environmental pollution is serious.Therefore, pollute for avoiding producing environment, people begin one's study various substitute products.Such as, after the zinc-plated step of stainless steel surface, adopt phosphatizing, then impose special anti-fingerprint tree resin layer.But the metallic surface that this treatment process obtains easily cracks, anticorrosion after long-time use, rustproof property declines.
On May 18th, 2004, No. the 6th, 736,908, the United States Patent (USP) of bulletin proposed a kind of metal surface treating liquid, and it contains special organic resin, soluble vanadium compound, and soluble metal compound, it contains Zr, Ti, Mo, W, Mn, and at least one metallic element in Ce.There is through the metallic surface of this treatment solution process good erosion resistance, alkali-resistivity and anti-fingerprinted performance, and not containing chromium metal, non-environmental-pollution problem.But described metal surface treating liquid contains special organic resin, this organic resin composition, complex structure, preparation is not easily; And this treatment solution processes for metallic surface, and mobile phone counter body commonly uses non-metallic material preparation, so the case surface for this type of material does not have applicable treatment process yet.
In view of this, the surface treatment of a kind of 3C of being applicable to electronic product casing is provided to realize anti-fingerprint and the process coating of environmentally safe is real in necessary.
Summary of the invention
Containing the chromium metal of serious environment pollution for solving the anti-fingerprint coating of prior art, through acid or alkaline purification or the problems such as metallic surface need be suitable for, the object of the present invention is to provide a kind of anti-fingerprint coating, it is not containing chromium, does not need through acid or alkaline purification, to environment and HUMAN HEALTH favourable; And metal or nonmetallic surface can be suitable for.
For realizing object of the present invention, the invention provides a kind of anti-fingeprinting surface coating, comprising: a hydrophobic nano material coating being formed at substrate surface to be coated, oleophobic property nano-material coating or super two thin nano-material coating.
Wherein, this hydrophobic nano material coating comprises polymer nanofiber, organosilicon nano coating and super hydrophobic material.This polymer nanofiber comprises polyacrylonitrile, polyolefine, polyester, polymeric amide, polyvinyl alcohol are the polymer nanofiber of raw material.This organosilicon nano coating comprises fluorine containing silane, sulfuric silane or organosilicon polymer nano material.This super hydrophobic material comprises floride-free super-hydrophobic nanofiber.
Wherein, this super two thin nano-material coating comprises super two thin array carbon nano tube film.
In addition, the thickness of this hydrophobic nano material coating, oleophobic property nano-material coating or super two thin nano-material coating is less than 1 micron, is preferably in 0.1 ~ 0.5 micrometer range.
Relative to prior art, anti-fingerprint coating of the present invention adopts hydrophobicity, oleophobic property coating is directly coated on body surface, when user's finger skin speckles with water stain or oil stain, and when contacting with this body surface, because of the characteristic of body surface anti-fingerprint coating, make water stain or oil stain to be attached to body surface, thus can prevent that terminating in body surface leaves fingerprint or spot.Meanwhile, this body surface is easy to clean, also has certain effect to dust-proof, bacteriological protection.In addition, the present invention containing heavy metal chromium, do not need through acid or base extraction, thus to environment protection and HUMAN HEALTH favourable.
[accompanying drawing explanation]
Fig. 1 is the schematic diagram of the zinc-plated stainless steel surface anti-fingerprint coating of prior art;
Fig. 2 is that first embodiment of the invention anti-fingerprint coatings applications is in nonmetallic surface schematic diagram;
Fig. 3 is that second embodiment of the invention anti-fingerprint coatings applications is in the schematic diagram of zinc-plated stainless steel surface.
[specific implementation method]
Body surface leaves fingerprint, traces it to its cause and is that people's finger skin surface adhesion is with greasy dirt, sweat stain, the dirt such as water stain, so user or operator contact fingerprints or finger pattern often with body surface.The present invention adopts a kind of oleophobic property, hydrophobic coating is applied to body surface, fundamentally can solve the fingerprinted problem of body surface, and not containing materials such as environmentally harmful heavy metal chromium, acid or alkali.
Below in conjunction with accompanying drawing, the embodiment of the present invention is illustrated.
Refer to Fig. 2, first embodiment of the invention anti-fingerprint coating 23 is directly applied to metal base 21 to form anti-fingerprint coating structure.Non metallic substrate 21 can comprise the goods such as plastics, glass, pottery, polymkeric substance, these goods be usually used in manufacturing mobile phone, computer, digital camera, PDA, etc. the shell of electronic product.The thickness of anti-fingerprint coating 23 is generally and is less than 1 micron, is preferably 0.1 ~ 0.5 micron.
Refer to Fig. 3, second embodiment of the invention be by anti-fingerprint coatings applications in galvanized steel substrate, comprise the stainless steel-based end 31, zinc coating 32 and anti-fingerprint coating 33 and comprise oleophobic property, hydrophobic nano material coating and super two thin nano-material coating.The thickness of anti-fingerprint coating 33 is generally and is less than 1 micron, is preferably 0.1 ~ 0.5 micron.
The material of described oleophobic property, hydrophobic nano material coating comprises: polymer nanofiber, such as, with the polymer nanofiber that polyacrylonitrile, polyolefine, polyester, polymeric amide, polyvinyl alcohol are raw material; Organosilicon nano coating, comprises fluorine containing silane, sulfuric silane or organosilicon polymer etc., is for raw material preparation with dimethyl siloxane, methyl chlorosilane, phenyl chlorosilane etc.; Super-hydrophobic coating material, comprises floride-free super-hydrophobic nanofiber.Described super two thin nano-material coating is the nano-material coating simultaneously with super-hydrophobicity and super oleophobic property, such as super two thin array carbon nano tube film.
Polymer nanofiber and organosilicon nano coating belong to general hydrophobic material.When water and hydrophobic material surface contact, because water molecules near intersection exists, receive force of cohesion F1 and sticking power F2 effect, and water is directly proportional to F1/F2 to hydrophobic material interfacial contact angle simultaneously.Because water molecules force of cohesion is certain, so sticking power is less between hydrophobic material and water molecules, contact angle is larger.And the surface energy that between material and water, sticking power is made up of this materials chemistry determines, its chemical constitution surface energy is lower, less to water loading power.Because the surface energy of polymer nanofiber and organosilicon nano coating is very low, so this material hydrophobic performance is better.
Super-hydrophobic material, refers to the material that water indirect contact angle surperficial with it is greater than 150 °.
Super two thin nano material is a kind of nano material simultaneously with hydrophobicity and oleophobic property.Utilize from down to up, by atom to molecule, host molecule to the epitaxy nanochemistry method of aggregate, (as convex and recessed alternate) interface structure of nano-scale geometrical shape complementation can be built in particular surface.Owing to adsorbed gas can be made to divide in stable existence on the surface of nano-scale indentation, so be equivalent to the gas membrane having one deck stable in macro surface, oil or water directly cannot be contacted with the surface of material, thus the two thin property making the surface presentation of material extraordinary.At this moment the contact angle at water droplet or oil droplet and interface is tending towards maximum value.
Claims (8)
1. surface resists a fingerprinted nano coating, and it comprises: a hydrophobic nano material coating being formed at substrate surface to be coated, oleophobic property nano-material coating or super two thin nano-material coating.
2. the anti-fingerprinted nano coating in surface as claimed in claim 1, it is characterized in that, hydrophobic nano material coating comprises polymer nanofiber, organosilicon nano coating and super hydrophobic material.
3. the surface as described in right 2 resists fingerprinted nano coating, it is characterized in that, this polymer nanofiber comprises polyacrylonitrile, polyolefine, polyester, polymeric amide, polyvinyl alcohol are the polymer nanofiber of raw material.
4. the anti-fingerprinted nano coating in surface as claimed in claim 2, it is characterized in that, this organosilicon nano coating comprises fluorine containing silane, sulfuric silane or organosilicon polymer nano material.
5. as right 2 require as described in surface resist fingerprinted nano coating, it is characterized in that, this super hydrophobic material comprises floride-free super-hydrophobic nanofiber.
6. the anti-fingerprinted nano coating in surface as claimed in claim 1, it is characterized in that, this super two thin nano-material coating comprises super two thin array carbon nano tube film.
7. the anti-fingerprinted nano coating in surface as claimed in claim 1, its characteristic is, the thickness of this hydrophobic nano material coating, oleophobic property nano-material coating or super two thin nano-material coating is less than 1 micron.
8. the anti-fingerprinted nano coating in surface as claimed in claim 7, it is characterized in that, the thickness of this hydrophobic nano material coating, oleophobic property nano-material coating or super two thin nano-material coating is 0.1 ~ 0.5 micron.
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| CN201510550726.7A CN105255301A (en) | 2015-09-01 | 2015-09-01 | Anti-fingerprint nano-coating |
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| CN201510550726.7A CN105255301A (en) | 2015-09-01 | 2015-09-01 | Anti-fingerprint nano-coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111234695A (en) * | 2020-03-16 | 2020-06-05 | 中国船舶重工集团公司第七二五研究所 | Microstructure surface antifouling material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1778851A (en) * | 2004-11-23 | 2006-05-31 | 鸿富锦精密工业（深圳）有限公司 | Anti-fingeprinting surface coating |
| CN103275616A (en) * | 2013-06-06 | 2013-09-04 | 江苏博特新材料有限公司 | Environment-friendly water-based nano coating material used for concrete protection, and preparation method thereof |
| CN104804640A (en) * | 2015-04-14 | 2015-07-29 | 中国科学院金属研究所 | Nano-modified organic silicon coating with high temperature resistance, corrosion resistance and nuclear radiation resistance as well as preparation and application |
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- 2015-09-01 CN CN201510550726.7A patent/CN105255301A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1778851A (en) * | 2004-11-23 | 2006-05-31 | 鸿富锦精密工业（深圳）有限公司 | Anti-fingeprinting surface coating |
| CN103275616A (en) * | 2013-06-06 | 2013-09-04 | 江苏博特新材料有限公司 | Environment-friendly water-based nano coating material used for concrete protection, and preparation method thereof |
| CN104804640A (en) * | 2015-04-14 | 2015-07-29 | 中国科学院金属研究所 | Nano-modified organic silicon coating with high temperature resistance, corrosion resistance and nuclear radiation resistance as well as preparation and application |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111234695A (en) * | 2020-03-16 | 2020-06-05 | 中国船舶重工集团公司第七二五研究所 | Microstructure surface antifouling material and preparation method thereof |
| CN111234695B (en) * | 2020-03-16 | 2021-08-31 | 中国船舶重工集团公司第七二五研究所 | Microstructure surface antifouling material and preparation method thereof |
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