CN113186579B - Titanium alloy oral cavity restoration surface whitening self-cleaning coating and preparation method thereof - Google Patents
Titanium alloy oral cavity restoration surface whitening self-cleaning coating and preparation method thereof Download PDFInfo
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- 238000000576 coating method Methods 0.000 title claims abstract description 66
- 239000011248 coating agent Substances 0.000 title claims abstract description 62
- 238000004140 cleaning Methods 0.000 title claims abstract description 52
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 35
- 230000002087 whitening effect Effects 0.000 title claims abstract description 28
- 210000000214 mouth Anatomy 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 238000007745 plasma electrolytic oxidation reaction Methods 0.000 claims abstract description 48
- 239000011159 matrix material Substances 0.000 claims abstract description 8
- 238000005516 engineering process Methods 0.000 claims abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000003792 electrolyte Substances 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000000839 emulsion Substances 0.000 claims description 7
- -1 polytetrafluoroethylene Polymers 0.000 claims description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- 230000001680 brushing effect Effects 0.000 claims description 6
- 238000005265 energy consumption Methods 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 5
- VBGGLSWSRVDWHB-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-henicosafluorodecyl-tris(trifluoromethoxy)silane Chemical compound FC(F)(F)O[Si](OC(F)(F)F)(OC(F)(F)F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F VBGGLSWSRVDWHB-UHFFFAOYSA-N 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 4
- 239000010452 phosphate Substances 0.000 claims description 4
- ABTOQLMXBSRXSM-UHFFFAOYSA-N silicon tetrafluoride Chemical compound F[Si](F)(F)F ABTOQLMXBSRXSM-UHFFFAOYSA-N 0.000 claims description 4
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 4
- AVXLXFZNRNUCRP-UHFFFAOYSA-N trichloro(1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluorooctyl)silane Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)[Si](Cl)(Cl)Cl AVXLXFZNRNUCRP-UHFFFAOYSA-N 0.000 claims description 4
- 150000004756 silanes Chemical class 0.000 claims description 3
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 3
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 3
- QTRSWYWKHYAKEO-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-henicosafluorodecyl-tris(1,1,2,2,2-pentafluoroethoxy)silane Chemical compound FC(F)(F)C(F)(F)O[Si](OC(F)(F)C(F)(F)F)(OC(F)(F)C(F)(F)F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F QTRSWYWKHYAKEO-UHFFFAOYSA-N 0.000 claims description 2
- 238000007605 air drying Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 238000003618 dip coating Methods 0.000 claims description 2
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 claims description 2
- 235000019799 monosodium phosphate Nutrition 0.000 claims description 2
- 229910000403 monosodium phosphate Inorganic materials 0.000 claims description 2
- 229940089951 perfluorooctyl triethoxysilane Drugs 0.000 claims description 2
- 238000005498 polishing Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 claims description 2
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 claims description 2
- 239000001488 sodium phosphate Substances 0.000 claims description 2
- 229940048086 sodium pyrophosphate Drugs 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 235000019818 tetrasodium diphosphate Nutrition 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- AVYKQOAMZCAHRG-UHFFFAOYSA-N triethoxy(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)silane Chemical compound CCO[Si](OCC)(OCC)CCC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F AVYKQOAMZCAHRG-UHFFFAOYSA-N 0.000 claims description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 2
- 235000019801 trisodium phosphate Nutrition 0.000 claims description 2
- 229910000406 trisodium phosphate Inorganic materials 0.000 claims description 2
- 244000005700 microbiome Species 0.000 abstract description 5
- 241000894006 Bacteria Species 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 230000002209 hydrophobic effect Effects 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000005548 dental material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 241000628997 Flos Species 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 208000025157 Oral disease Diseases 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000000051 modifying effect Effects 0.000 description 1
- 208000030194 mouth disease Diseases 0.000 description 1
- 230000003239 periodontal effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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
- C25D11/26—Anodisation of refractory metals or alloys based thereon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/30—Metallic substrate based on refractory metals (Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W)
- B05D2202/35—Metallic substrate based on refractory metals (Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W) based on Ti
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cosmetics (AREA)
- Dental Preparations (AREA)
Abstract
The invention provides a titanium alloy oral cavity restoration surface whitening self-cleaning coating and a preparation method thereof. The titanium alloy oral cavity restoration surface coating comprises a white micro-arc oxidation inner layer and a self-cleaning outer layer which are sequentially arranged from inside to outside. In addition, the preparation method of the titanium alloy oral cavity restoration surface coating mainly comprises the following steps: firstly, a white micro-arc oxidation inner layer is formed on the surface of a titanium alloy substrate by utilizing a low-energy micro-arc oxidation technology, and then a self-cleaning outer layer is prepared on the surface of the micro-arc oxidation inner layer. The preparation method of the coating is simple, the cost is low, the binding force between the coating and the metal matrix is strong, the wear resistance is good, the color of the coating is close to the color of teeth, the metal color of the titanium alloy matrix can be effectively shielded, and meanwhile, the surface of the coating is in a hydrophobic state, the adhesion of substances such as bacteria and microorganisms can be effectively inhibited, so that the self-cleaning characteristic of the surface of the prosthesis is endowed.
Description
Technical Field
The invention belongs to the technical field of oral restoration, and relates to a titanium alloy oral restoration surface whitening self-cleaning coating and a preparation method thereof.
Background
Pure titanium and titanium alloy have good biocompatibility, lower density and excellent corrosion resistance, etc. are suitable for making dental prostheses such as false teeth, full crowns, brackets, etc., and are safer and more comfortable compared with the traditional dental materials, but the color contrast between the titanium alloy and the tooth surface is large, so that the beauty is greatly influenced. At present, high polymer whitening coatings such as epoxy resin and the like are mainly prepared on the surface of a dental material by brushing or dipping and the like, and the coatings have the problems of low hardness, insufficient binding force between the coatings and a matrix, poor biocompatibility, poor wear resistance and the like although the coatings have a certain whitening effect. Meanwhile, microorganisms such as bacteria in the oral cavity are often attached to the surface of the teeth, which is a main factor of common oral diseases such as caries and periodontal tissue inflammation, and the traditional method is to prevent the microorganisms such as teeth brushing, dental floss, professional tooth cleaning and the like, but cannot provide a growth environment capable of inhibiting the microorganisms such as bacteria in the oral cavity for a long time. Therefore, the invention is very necessary to invent the coating with the functions of whitening and self-cleaning on the surface of the titanium alloy oral cavity prosthesis.
Disclosure of Invention
In view of the shortcomings of the prior art, the invention aims to provide a simple and low-cost titanium alloy oral cavity restoration body surface whitening self-cleaning coating and a preparation method thereof.
The titanium alloy oral cavity restoration surface whitening self-cleaning coating is characterized by comprising a white micro-arc oxidation inner layer and a self-cleaning outer layer which are sequentially arranged from inside to outside; the micro-arc oxidation inner layer in the coating structure is metallurgically bonded with the titanium alloy substrate, and the multi-scale pore surface of the micro-arc oxidation layer can be used as a riveting mosaic substrate of the self-cleaning coating, so that the bonding force between the self-cleaning coating and the micro-arc oxidation transition layer is improved.
Furthermore, the self-cleaning coating is prepared by adopting perfluoro silane or polytetrafluoroethylene emulsion, wherein the perfluoro silane is at least one of perfluoro octyl trichlorosilane, perfluoro decyl trimethoxy silane, perfluoro octyl triethoxy silane, perfluoro decyl trimethoxy silane and perfluoro decyl triethoxy silane.
The preparation method of the titanium alloy oral cavity restoration surface whitening self-cleaning coating is used for preparing the whitening self-cleaning coating and is characterized by comprising the following steps of:
step 1: sequentially polishing and cleaning the surface of the titanium alloy oral cavity prosthesis;
step 2: preparing a white micro-arc oxidation inner layer by using a low-energy-consumption micro-arc oxidation technology, immersing the treated sample in an electrolyte, connecting a titanium alloy sample with a positive electrode of a power supply, connecting a stainless steel electrolytic tank with a negative electrode of the power supply, and turning on the power supply to perform micro-arc oxidation treatment to obtain a micro-arc oxidation layer with a white surface;
step 3: and (3) preparing a self-cleaning outer layer, cleaning and drying the sample subjected to micro-arc oxidation, preparing a solution for preparing the self-cleaning coating, coating the solution on the white micro-arc oxidation surface, and drying to obtain the titanium alloy oral restoration whitening self-cleaning coating.
Further, the low-energy consumption electrolyte consists of 40-60 g/L of hydroxide and 5-20 g/L of phosphate, wherein the hydroxide is at least one of sodium hydroxide or potassium hydroxide, and the phosphate is at least one of sodium tripolyphosphate, sodium hexametaphosphate, trisodium phosphate, sodium pyrophosphate, sodium dihydrogen phosphate and disodium hydrogen phosphate.
Further, the technological parameters of the low-energy-consumption micro-arc oxidation treatment comprise: the pulse voltage is selected under the constant voltage mode, the voltage is 60V-90V, the frequency is 50-2000 Hz, the duty ratio is 5-30%, and the treatment time is 1-5 min.
The preparation method of the titanium alloy oral cavity restoration surface whitening self-cleaning coating comprises the following steps of:
step 1: preparing polytetrafluoroethylene emulsion with the mass fraction of 10-60%, or mixing one or more mixed silanes with ethanol in the volume ratio of 1:10-1:100;
step 2: coating the mixed solution on the surface of the white micro-arc oxidation layer in a brushing, dip-coating or spraying mode;
step 3: air-drying at room temperature and solidifying at 20-200 deg.C for 1-5 h, cooling to room temperature with furnace, and coating thickness is 1-5 micrometers.
The invention has the following advantages and beneficial effects:
the invention provides a whitening self-cleaning coating on the surface of a titanium alloy oral cavity restoration body and a preparation method thereof, wherein the coating has strong binding force with a metal matrix and good wear resistance, the color of the coating is close to the color of teeth, the self-cleaning coating can effectively shield the metal color of the titanium alloy matrix, and meanwhile, the surface of the coating can effectively inhibit the adhesion of substances such as bacteria and microorganisms, and the like, thereby playing a role in self-cleaning the surface of the restoration body. In addition, the preparation process of the whitening self-cleaning coating is simple and feasible, the cost is low, and the whitening self-cleaning coating has potential application value.
Drawings
FIG. 1 is a schematic view of a whitening self-cleaning coating according to an embodiment of the present invention;
FIG. 2 is a physical view of a titanium alloy dental restoration according to an embodiment of the present invention;
FIG. 3 is a physical view of a whitening self-cleaning coating prepared on the surface of a titanium alloy oral cavity restoration body in an embodiment of the invention;
fig. 4 shows the contact angle between the whitening self-cleaning coating and water in the embodiment of the invention.
Detailed Description
The present invention will be described in detail with reference to specific examples.
Example 1
The embodiment provides a titanium alloy oral cavity restoration surface whitening self-cleaning coating and a preparation method thereof, wherein the method comprises the following steps:
1. preparation of white micro-arc oxide layer on surface of titanium alloy oral cavity restoration body
(1) The prepared micro-arc oxidation electrolyte comprises the following components: 50g/L sodium hydroxide and 15g/L sodium tripolyphosphate are dissolved by deionized water and uniformly stirred to prepare the required micro-arc oxidation electrolyte;
(2) Taking pure titanium as an anode, taking a stainless steel container as a cathode, carrying out a micro-arc oxidation process with a micro-arc oxidation voltage of 75V, a frequency of 500Hz and a duty ratio of 30%, and reacting for 2min to obtain a white micro-arc oxidation layer.
2. Preparation of self-cleaning coating on micro-arc oxidation layer surface
(1) Mixing perfluorooctyl trichlorosilane and ethanol in a volume ratio of 1:50;
(2) Coating the mixed solution on the surface of the micro-arc oxidation layer in a brushing mode;
(3) Air-dried at room temperature and cured at 120℃for 1h, cooled to room temperature and the coating thickness was 3. Mu.m.
Example two
The embodiment provides a titanium alloy oral cavity restoration surface whitening self-cleaning coating and a preparation method thereof, wherein the method comprises the following steps:
1. preparation of white micro-arc oxide layer on surface of titanium alloy oral cavity restoration body
(1) The prepared micro-arc oxidation electrolyte comprises the following components: 60g/L sodium hydroxide and 10g/L sodium tripolyphosphate are dissolved by deionized water and uniformly stirred to prepare the required micro-arc oxidation electrolyte;
(2) Taking pure titanium as an anode, taking a stainless steel container as a cathode, carrying out a micro-arc oxidation process with a micro-arc oxidation voltage of 70V, a frequency of 700Hz and a duty ratio of 30%, and reacting for 5min to obtain a white micro-arc oxidation layer.
2. Preparation of self-cleaning coating on micro-arc oxidation layer surface
(1) Preparing polytetrafluoroethylene emulsion with mass fraction of 10%
(2) The sample was immersed in a 10% polytetrafluoroethylene emulsion for 30min
(3) The sample was taken out and cured at 100℃for 1h, cooled to room temperature and the coating thickness was 5. Mu.m.
Example III
The embodiment provides a titanium alloy oral cavity restoration surface whitening self-cleaning coating and a preparation method thereof, wherein the method comprises the following steps:
1. preparation of white micro-arc oxide layer on surface of titanium alloy oral cavity restoration body
(1) The prepared micro-arc oxidation electrolyte comprises the following components: dissolving 40g/L sodium hydroxide and 15g/L sodium hexametaphosphate in deionized water and uniformly stirring to obtain a required micro-arc oxidation electrolyte;
(2) Taking pure titanium as an anode, taking a stainless steel container as a cathode, carrying out a micro-arc oxidation process with a micro-arc oxidation voltage of 80V, a frequency of 500Hz and a duty ratio of 50%, and reacting for 2min to obtain a white micro-arc oxidation layer.
2. Preparation of self-cleaning coating on micro-arc oxidation layer surface
(1) Mixing perfluorooctyl trichlorosilane and ethanol in a volume ratio of 1:100;
(2) Coating the mixed solution on the surface of the micro-arc oxidation layer in a brushing mode;
(3) Air-dried at room temperature and cured at 100℃for 2 hours, cooled to room temperature and the coating thickness was 2. Mu.m.
As shown in fig. 3, the surface of the sample is white and is close to teeth, and has whitening and modifying effects; as shown in figure 4, the whitening self-cleaning coating has a hydrophobic effect (the hydrophobic angle is 99.5 degrees & gt 90 degrees), so that pollutants are difficult to attach to the surface, and the whitening self-cleaning coating has a good self-cleaning effect.
In conclusion, the coating prepared by the method has the advantages that the color of the coating is close to that of the teeth, the metallic color of the titanium alloy matrix can be effectively shielded, the whitening effect is good, meanwhile, the surface can effectively avoid the adhesion of dirt, the self-cleaning effect is realized on the surface of the restoration body, and the preparation method is relatively simple
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that variations and modifications may be made without departing from the principles of the invention, and such variations and modifications are to be regarded as being within the scope of the invention.
Claims (1)
1. A preparation method of a titanium alloy oral cavity restoration body surface whitening self-cleaning coating is characterized in that the coating comprises a white micro-arc oxidation inner layer and a self-cleaning outer layer which are sequentially arranged from inside to outside, wherein metallurgical bonding is formed between the micro-arc oxidation inner layer in the coating and a titanium alloy matrix, and the multi-scale pore surface of the micro-arc oxidation inner layer can be used as a riveting mosaic matrix of the self-cleaning coating, so that the bonding force between the self-cleaning coating and a micro-arc oxidation transition layer is improved; the preparation method comprises the following steps of
Step 1: sequentially polishing and cleaning the surface of the titanium alloy oral cavity prosthesis;
step 2: preparing a white micro-arc oxidation inner layer by using a low-energy-consumption micro-arc oxidation technology, immersing the treated sample in an electrolyte, connecting a titanium alloy sample with a positive electrode of a power supply, connecting a stainless steel electrolytic tank with a negative electrode of the power supply, and turning on the power supply to perform micro-arc oxidation treatment to obtain the micro-arc oxidation inner layer with a white surface; the electrolyte consists of 40-60 g/L of hydroxide and 5-20 g/L of phosphate, wherein the hydroxide is at least one of sodium hydroxide or potassium hydroxide, and the phosphate is at least one of sodium tripolyphosphate, sodium hexametaphosphate, trisodium phosphate, sodium pyrophosphate, sodium dihydrogen phosphate and disodium hydrogen phosphate; the technological parameters of the low-energy-consumption micro-arc oxidation treatment comprise: selecting pulse voltage under a constant voltage mode, wherein the voltage is 60V-90V, the frequency is 50-2000 Hz, the duty ratio is 5% -30%, and the processing time is 1 min-5 min;
step 3: preparing a self-cleaning outer layer, cleaning and drying a sample subjected to micro-arc oxidation, preparing a solution for preparing a self-cleaning coating, coating the solution on the white micro-arc oxidation surface, and drying to obtain the titanium alloy oral restoration whitening self-cleaning coating;
the self-cleaning coating is prepared by adopting perfluoro silane or polytetrafluoroethylene emulsion, wherein the perfluoro silane is at least one of perfluoro octyl trichlorosilane, perfluoro decyl trimethoxy silane, perfluoro octyl triethoxy silane, perfluoro decyl trimethoxy silane and perfluoro decyl triethoxy silane;
the step of configuring a solution for preparing a self-cleaning coating comprises:
step 1): preparing polytetrafluoroethylene emulsion with the mass fraction of 10% -60%, or mixing one or more perfluorinated silanes with ethanol in a volume ratio of 1:10-1:100;
step 2): coating the polytetrafluoroethylene emulsion or the perfluorinated silane solution in the step 1) on the surface of the white micro-arc oxidation inner layer in a brushing, dip-coating or spray-coating mode;
step 3): air-drying at room temperature and curing for 1-5 h at 20-200 ℃, cooling to room temperature along with a furnace, wherein the thickness of the coating is 1-5 mu m.
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| CN202110423737.4A CN113186579B (en) | 2021-04-20 | 2021-04-20 | Titanium alloy oral cavity restoration surface whitening self-cleaning coating and preparation method thereof |
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