CN110981471A - Process for manufacturing zirconium oxide multi-color bracket - Google Patents
Process for manufacturing zirconium oxide multi-color bracket Download PDFInfo
- Publication number
- CN110981471A CN110981471A CN201911287320.9A CN201911287320A CN110981471A CN 110981471 A CN110981471 A CN 110981471A CN 201911287320 A CN201911287320 A CN 201911287320A CN 110981471 A CN110981471 A CN 110981471A
- Authority
- CN
- China
- Prior art keywords
- bracket
- particles
- oxide
- color
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/12—Brackets; Arch wires; Combinations thereof; Accessories therefor
- A61C7/14—Brackets; Fixing brackets to teeth
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3275—Cobalt oxides, cobaltates or cobaltites or oxide forming salts thereof, e.g. bismuth cobaltate, zinc cobaltite
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Veterinary Medicine (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Epidemiology (AREA)
- Composite Materials (AREA)
- Animal Behavior & Ethology (AREA)
- Manufacturing & Machinery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a process for manufacturing a zirconia multi-color bracket, which comprises the following steps: (1) preparing powder: grinding zirconium oxide into particles with the diameter of 600nm +/-20 nm by taking the zirconium oxide as a raw material; (2) mixing: mixing the zirconia particles with the color-mixed metal oxide to obtain mixed powder; (3) sanding and drying: grinding the mixed powder into particles with the diameter of 60-600 nm by using sand and drying; (4) banburying: adding PE and PP into the mixed powder for banburying to obtain blocky irregular solid particles; (5) injection molding, namely adding the irregular solid particles into an injection molding machine for injection molding to obtain a bracket; (6) and (5) sintering. The invention has the following advantages and effects: zirconia is used as a raw material, and is respectively mixed, sanded, internally mixed and sintered with erbium oxide, cobalt oxide, magnesium oxide, praseodymium oxide and the like to form bracket with various colors, so that a user can personally select the color of the bracket, and the bracket has the effects of better aesthetic appearance, higher strength, better compactness and difficult falling.
Description
Technical Field
The invention relates to the technical field of orthodontic treatment, in particular to a process for manufacturing a zirconia colorful bracket.
Background
The bracket is an important part of fixed orthodontic technology, is directly adhered to the surface of the dental crown by using an adhesive, and applies various types of orthodontic force to the tooth through the bracket by using an arch wire. The existing common bracket is made of stainless steel and biological ceramics, and the main effect of the bracket is to fix an arch wire, so that the arch wire can better play a role, the correction force is transferred, the three-dimensional movement of teeth is controlled, and the purpose of orthodontic correction is achieved. Compared with stainless steel, the ceramic bracket not only has better biocompatibility, stable mechanical strength and proper hardness and wear resistance, but also has better use aesthetics than the stainless steel bracket.
The existing Chinese patent with publication number CN105130431A discloses a personalized colored zirconia bracket for dentistry and a preparation method thereof, which takes zirconia ceramics stabilized by adding yttria as a bracket material, dyes and sinters a white zirconia bracket blank body with a dyeing solution according to the color of a user tooth after molding and presintering, and finally the color of the zirconia bracket is similar to or the same as the color of the user tooth, thus meeting the pursuit of the user for aesthetic property.
However, the personalized colored zirconia dental bracket and the preparation method thereof have the following defects: since the dyeing liquid is adopted to dye the outer surface of the white zirconia and then is sintered, the outer surface of the bracket becomes a corresponding color, but the dyeing liquid is only coated on the outer surface of the zirconia bracket, and the dyeing liquid is not integrated with the zirconia component inside, so that the consistency is poor. In addition, in the use process, if the bracket is knocked to cause the outer surface to fall off, the white zirconia inside is exposed, and the color of the white zirconia is obviously different from that of the outer surface layer, so that the pursuit of a user on the aesthetic appearance is influenced.
Disclosure of Invention
The invention aims to provide a process for manufacturing a zirconia multicolor bracket, which adopts mixing, banburying, injection molding and sintering of zirconia and color-mixed metal oxide to ensure that the internal and external components of the whole bracket are the same, and the bracket has the effects of higher consistency and strength and better aesthetic appearance.
The technical purpose of the invention is realized by the following technical scheme:
the manufacturing process of the zirconium oxide colorful bracket comprises the following steps:
(1) preparing powder: grinding zirconium oxide into particles with the diameter of 600nm +/-20 nm by taking the zirconium oxide as a raw material;
(2) mixing: mixing the zirconium oxide particles ground in the step (1) with a metal oxide for color matching to obtain mixed powder;
(3) sanding and drying: adding a dispersing agent into the mixed powder, sanding the mixed powder to prepare wet mixture particles with the diameter of 60-600 nm, performing spray granulation on the mixture particles, and drying to prepare non-agglomerated powder;
(4) banburying: adding PE and PP into the powder prepared in the step (3), and banburying in an internal mixer to obtain blocky irregular solid particles, wherein the content of mixed powder in the irregular solid particles is 80-90%;
(5) injection molding, namely adding the irregular solid particles prepared in the step (4) into an injection molding machine, heating to 130-200 ℃, melting the irregular solid particles into fluid, and injecting the fluid into a bracket mold for molding to obtain a bracket;
(6) and (3) sintering: and (5) taking the bracket formed in the die in the step (5) out, and sintering at high temperature through a high-temperature furnace.
By adopting the technical scheme, the mixed powder in the step (3) is ground into particles of 60-600 nm, the particles are proper in size, if the particles are too small, the particles are easy to clamp and embed in a mold during injection molding in the mold, the requirement on the mold is high, and if the particles are too large, the particles are unevenly heated and clamped in a flow channel; in the step (4), after PE and PP are added into the mixed powder, the mixed powder is heated and melted in the injection molding process, and the mixed powder has better fluidity in a mold, so that the forming effect of the bracket is better; in the step (5), the heating temperature of 130-200 ℃ is adopted, and because the melting point of PE is 130-145 ℃ and the melting point of PP is 164-170 ℃, the PE and PP can be heated and melted within the temperature range of 130-200 ℃; after sintering in the step (6), the bracket has better compactness and higher strength. Thus, the bracket with different colors is formed by taking zirconia as a raw material and mixing, sanding, banburying, injection molding and sintering the zirconia with different toning metal oxides respectively, the bracket is consistent inside and outside the material, the preparation process is simple and convenient, a user can personally select the color of the bracket according to own preference, not only has better aesthetic appearance, but also has higher strength and is difficult to partially fall off.
The invention is further provided with: and (2) carrying out dry grinding by adopting a ball mill in the step (1).
The invention is further provided with: the metal oxide for color matching in the step (2) is one of erbium oxide, cobalt oxide, magnesium oxide and praseodymium oxide.
By adopting the technical scheme, the red bracket is formed after the zirconium oxide particles and the erbium oxide are mixed, sanded, internally mixed, injection-molded and sintered, the blue bracket is formed after the zirconium oxide particles and the cobalt oxide are subjected to the same preparation steps, the dark yellow bracket is formed after the zirconium oxide particles and the cobalt oxide are subjected to the same preparation steps, the bright yellow bracket is formed after the zirconium oxide particles and the cobalt oxide are subjected to the same preparation steps, the uniformity of each part of the bracket is high, the internal and external materials are uniform, and the color selection is diversified.
The invention is further provided with: the molar ratio of the zirconium oxide particles to the metal oxide for color matching in the step (2) is 0.1-10 mol.
By adopting the technical scheme, if the molar ratio of the zirconium oxide to the toning metal oxide is too small, the problem of poor coloring degree can be caused, and if the molar ratio of the zirconium oxide to the toning metal oxide is too large, the strength of the prepared bracket is low.
The invention is further provided with: and (4) placing the irregular solid particles prepared in the step (4) into a granulator for granulation to prepare small solid particles with the diameter of 2-6 mm.
By adopting the technical scheme, irregular solid particles obtained after banburying are made into regular solid small particles (the irregular solid particles are larger than the regular solid small particles) with the diameter of 2-6 mm by the granulator, and when the solid small particles are added into the injection molding machine, the solid small particles can be uniformly heated, so that the melting is accelerated, and the preparation efficiency is improved.
The invention is further provided with: in the step (6), the sintering temperature is 1300-1800 ℃, and the sintering time is 8-12 h.
By adopting the technical scheme, the smaller the particles of the mixed powder subjected to sanding in the step (3), the lower the sintering temperature in the step (6) is, the shorter the sintering time is, the better the compactness and the higher the strength after sintering are, and the sintering time comprises the temperature rise time and the temperature holding time of a high-temperature furnace.
The invention is further provided with: in the step (6), the sintering temperature is 1800 ℃ and the sintering time is 12 h.
In conclusion, the invention has the following beneficial effects: the bracket is characterized in that zirconium oxide is ground into small particles as a raw material, and the small particles are respectively mixed with metal oxides such as erbium oxide, cobalt oxide, magnesium oxide, praseodymium oxide and the like, subjected to sanding, banburying, injection molding and sintering to obtain the corresponding red, blue, dark yellow and bright yellow bracket.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto. The materials, reagents and the like used in the examples are commercially available unless otherwise specified.
Example 1
Taking an equal part of zirconia as a raw material, preparing powder, and carrying out dry grinding on the zirconia by adopting a ball mill until zirconia powder particles are ground to 600nm +/-20 nm; adding erbium oxide powder into the ground zirconium oxide particles, wherein the molar ratio of the erbium oxide powder to the zirconium oxide is 1: 0.1, uniformly mixing to obtain mixed powder, adding a proper amount of water into the mixed powder to serve as a dispersing agent, sanding the mixed powder by using a sanding machine to prepare wet small particles with the diameter of 100nm +/-10 nm, and drying the small particles through spray granulation to prepare non-agglomerated powder; adding a proper amount of PE and PP into the powder, banburying in an internal mixer to obtain blocky irregular solid particles, wherein the content of mixed powder in the irregular solid particles is 80%, and then placing the irregular solid particles into a granulator for granulation to obtain solid small particles with the diameter of 2mm, wherein the solid small particles can be spherical or cylindrical. Then, adding the prepared spherical solid small particles into an injection molding machine, heating to 150 ℃ to enable the spherical solid small particles to be melted into fluid, enabling the fluid to have better fluidity after PE or PP in the spherical solid small particles is melted, and injecting the fluid into a bracket mould for forming to obtain a bracket with better forming effect; and finally, taking out the bracket formed in the die, and sintering at high temperature by using a high-temperature furnace, wherein the sintering temperature is 1300 ℃ and the sintering time is 8h, the sintering temperature and the sintering time are related to the particle size of the mixed powder, and when the particles are smaller, the required sintering temperature is relatively lower and the time is relatively shorter.
And after the high-temperature furnace is naturally cooled, the bracket formed in the mold is taken out to obtain a red bracket, the red bracket is integrally made of a mixture of zirconium oxide and erbium oxide, the internal and external consistency is better, the preparation process is simpler, the aesthetic appearance is better, the strength is higher, the compactness is better, and the phenomenon that parts of the bracket fall off is not easy to occur.
Example 2
Taking an equal part of zirconia as a raw material, preparing powder, and carrying out dry grinding on the zirconia by adopting a ball mill until zirconia powder particles are ground to 600nm +/-20 nm; adding cobalt oxide powder into the ground zirconium oxide particles, wherein the molar ratio of the cobalt oxide powder to the zirconium oxide is 1: 2, uniformly mixing to obtain mixed powder, adding a proper amount of water into the mixed powder to serve as a dispersing agent, sanding the mixed powder by using a sanding machine to prepare wet small particles with the diameter of 300nm +/-10 nm, and drying the small particles through spray granulation to prepare non-agglomerated powder; adding a proper amount of PE and PP into the powder, banburying in an internal mixer to obtain blocky irregular solid particles, wherein the content of mixed powder in the irregular solid particles is 85%, and then placing the irregular solid particles into a granulator for granulation to obtain solid small particles with the diameter of 4 mm. Then, adding the prepared spherical solid small particles into an injection molding machine, heating to 160 ℃, and melting the spherical solid small particles into fluid, wherein PE or PP in the spherical solid small particles is melted to ensure that the fluid has better fluidity, and the fluid is injected and molded in a bracket mold to obtain a bracket with better molding effect; and finally, taking out the bracket formed in the die, and sintering at a high temperature for 10 hours at 1500 ℃ by using a high-temperature furnace.
And after the high-temperature furnace is naturally cooled, taking out the bracket formed in the mold to obtain a blue bracket, wherein the blue bracket is integrally made of a mixture of zirconia and cobalt oxide, so that the inside and outside consistency is better, the preparation process is simpler, the aesthetic appearance is better, the strength is higher, the compactness is better, and the phenomenon that parts of the bracket fall off is not easy to occur.
Example 3
Taking an equal part of zirconia as a raw material, preparing powder, carrying out wet grinding on the zirconia by using a sand mill, adding water as a dispersing agent in the wet grinding process, and drying the wet ground to form small particles after the wet grinding is finished so as to obtain zirconia powder with the particle size of 600nm +/-20 nm; adding magnesium oxide powder into the ground zirconium oxide particles, wherein the molar ratio of the magnesium oxide powder to the zirconium oxide is 1: 6, uniformly mixing to obtain mixed powder, adding a proper amount of ethanol into the mixed powder to serve as a dispersing agent, sanding the mixed powder by using a sanding machine to prepare wet small particles with the diameter of 500nm +/-20 nm, and drying the small particles through spray granulation to prepare non-agglomerated powder; adding a proper amount of PE and PP into the powder, banburying in an internal mixer to obtain blocky irregular solid particles, wherein the content of mixed powder in the irregular solid particles is 85%, and then placing the irregular solid particles into a granulator for granulation to obtain solid small particles with the diameter of 4 mm. Then, adding the prepared spherical solid small particles into an injection molding machine, heating to 180 ℃ to enable the spherical solid small particles to be melted into fluid, enabling the fluid to have better fluidity after PE or PP in the spherical solid small particles is melted, and injecting the fluid into a bracket mould for forming to obtain a bracket with better forming effect; and finally, taking out the bracket formed in the die, and sintering at 1600 ℃ for 11h by using a high-temperature furnace.
And after the high-temperature furnace is naturally cooled, taking out the bracket formed in the mold to obtain the bracket which is dark yellow as a whole, wherein the whole material of the bracket is a mixture of zirconia and magnesia, the inside and outside consistency is better, the preparation process is simpler, the bracket not only has better aesthetic appearance, but also has higher strength and is not easy to partially fall off.
Example 4
Taking an equal part of zirconia as a raw material, preparing powder, carrying out wet grinding on the zirconia by using a sand mill, adding water as a dispersing agent in the wet grinding process, and drying the wet ground to form small particles after the wet grinding is finished so as to obtain zirconia powder with the particle size of 600nm +/-20 nm; adding praseodymium oxide powder into the ground zirconium oxide particles, wherein the molar ratio of the praseodymium oxide powder to the zirconium oxide is 1: 10, uniformly mixing to obtain mixed powder, adding a proper amount of ethanol into the mixed powder as a dispersing agent, sanding the mixed powder by using a sanding machine to prepare wet small particles with the diameter of 600nm +/-20 nm, and drying the small particles through spray granulation to prepare non-agglomerated powder; adding a proper amount of PE and PP into the powder, banburying in an internal mixer to obtain blocky irregular solid particles, wherein the content of mixed powder in the irregular solid particles is 90%, and then placing the irregular solid particles into a granulator for granulation to obtain solid small particles with the diameter of 6 mm. Then, adding the prepared spherical solid small particles into an injection molding machine, heating to 200 ℃ to enable the spherical solid small particles to be melted into fluid, enabling the fluid to have better fluidity after PE or PP in the spherical solid small particles is melted, and injecting the fluid into a bracket mould for forming to obtain a bracket with better forming effect; and finally, taking out the bracket formed in the die, and sintering at a high temperature of 1800 ℃ for 12h by using a high-temperature furnace.
And after the high-temperature furnace is naturally cooled, taking out the bracket formed in the mold to obtain the bracket which is bright yellow as a whole, wherein the whole material of the bracket is a mixture of zirconia and praseodymium oxide, so that the inside and outside consistency is better, the preparation process is simpler, the bracket not only has better aesthetic appearance, but also has higher strength and is not easy to partially fall off.
Example 5
Taking an equal part of zirconia as a raw material, preparing powder, carrying out wet grinding on the zirconia by using a sand mill, adding water as a dispersing agent in the wet grinding process, and drying the wet ground to form small particles after the wet grinding is finished so as to obtain zirconia powder with the particle size of 600nm +/-20 nm; adding magnesium oxide powder into the ground zirconium oxide particles, wherein the molar ratio of the magnesium oxide powder to the zirconium oxide is 1: 6, uniformly mixing to obtain mixed powder, adding a proper amount of ethanol into the mixed powder to serve as a dispersing agent, sanding the mixed powder by using a sanding machine to prepare wet small particles with the diameter of 200nm +/-10 nm, and drying the small particles through spray granulation to prepare non-agglomerated powder; adding a proper amount of PE and PP into the powder, banburying in an internal mixer to obtain blocky irregular solid particles, wherein the content of mixed powder in the irregular solid particles is 85%, and then placing the irregular solid particles into a granulator for granulation to obtain solid small particles with the diameter of 4 mm. Then, adding the prepared spherical solid small particles into an injection molding machine, heating to 180 ℃ to enable the spherical solid small particles to be melted into fluid, enabling the fluid to have better fluidity after PE or PP in the spherical solid small particles is melted, and injecting the fluid into a bracket mould for forming to obtain a bracket with better forming effect; and finally, taking out the bracket formed in the die, and sintering at the high temperature of 1400 ℃ for 9h by using a high-temperature furnace.
And when the high-temperature furnace is naturally cooled, taking out the bracket formed in the mold, wherein the obtained bracket has the color similar to that of the bracket in the embodiment 3 and is also a dark yellow bracket, and compared with the bracket in the embodiment 3, the bracket in the embodiment has higher strength.
Example 6
Taking an equal part of zirconia as a raw material, preparing powder, carrying out wet grinding on the zirconia by using a sand mill, adding water as a dispersing agent in the wet grinding process, and drying the wet ground to form small particles after the wet grinding is finished so as to obtain zirconia powder with the particle size of 600nm +/-20 nm; adding magnesium oxide powder into the ground zirconium oxide particles, uniformly mixing the magnesium oxide powder and the zirconium oxide according to the molar ratio of 1: 10 to obtain mixed powder, adding a proper amount of ethanol into the mixed powder as a dispersing agent, sanding the mixed powder by using a sanding machine to prepare wet small particles with the diameter of 200nm +/-10 nm, and drying the small particles through spray granulation to prepare non-agglomerated powder; adding a proper amount of PE and PP into the powder, banburying in an internal mixer to obtain blocky irregular solid particles, wherein the content of mixed powder in the irregular solid particles is 85%, and then placing the irregular solid particles into a granulator for granulation to obtain solid small particles with the diameter of 4 mm. Then, adding the prepared spherical solid small particles into an injection molding machine, heating to 180 ℃ to enable the spherical solid small particles to be melted into fluid, enabling the fluid to have better fluidity after PE or PP in the spherical solid small particles is melted, and injecting the fluid into a bracket mould for forming to obtain a bracket with better forming effect; and finally, taking out the bracket formed in the die, and sintering at the high temperature of 1400 ℃ for 9h by using a high-temperature furnace.
And (3) taking out the bracket formed in the mold after the high-temperature furnace is naturally cooled, wherein the obtained bracket has the color similar to that of the bracket in the embodiment 5, is also a dark yellow bracket, and has a darker color compared with the bracket in the embodiment 5.
In particular, although the yellow bracket is formed by mixing zirconia and magnesia and mixing zirconia and praseodymium oxide, both of them cannot be mixed together with zirconia. In addition, the color of the bracket can be deepened or lightened by adjusting the relative proportion of cobalt oxide, erbium oxide, magnesium oxide, praseodymium oxide and zirconium oxide, and a user can personally select the color of the bracket according to the preference of the user so as to meet the public demand.
The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.
Claims (7)
1. The manufacturing process of the zirconium oxide colorful bracket is characterized by comprising the following steps:
(1) preparing powder: grinding zirconium oxide serving as a raw material into particles with the diameters of 600nm +/-20 nm;
(2) mixing: mixing the zirconium oxide particles ground in the step (1) with a metal oxide for color matching to obtain mixed powder;
(3) sanding and drying: adding a dispersing agent into the mixed powder, sanding the mixed powder to prepare wet mixture particles with the diameter of 60-600 nm, and performing spray granulation and drying on the mixture particles to prepare non-agglomerated powder;
(4) banburying: adding PE and PP into the powder prepared in the step (3), and banburying in an internal mixer to obtain blocky irregular solid particles, wherein the content of the mixed powder in the irregular solid particles is 80-90%;
(5) injection molding, namely adding the irregular solid particles prepared in the step (4) into an injection molding machine, heating to 130-200 ℃, and melting the irregular solid particles into fluid through hot melting, wherein the fluid is injected and molded in a bracket mold to obtain a bracket;
(6) and (3) sintering: and (5) taking the bracket formed in the die in the step (5) out, and sintering at high temperature through a high-temperature furnace.
2. The process of manufacturing zirconia multi-color brackets of claim 1, wherein: and (2) carrying out dry grinding by adopting a ball mill in the step (1).
3. The process of manufacturing zirconia multi-color brackets of claim 1, wherein: the metal oxide for color matching in the step (2) is one of erbium oxide, cobalt oxide, magnesium oxide and praseodymium oxide.
4. The process of manufacturing zirconia multi-color brackets of claim 1, wherein: the molar ratio of the zirconium oxide particles to the metal oxide for color matching in the step (2) is 0.1-10 mol.
5. The process of manufacturing zirconia multi-color brackets of claim 1, wherein: and (4) placing the irregular solid particles prepared in the step (4) into a granulator for granulation to prepare small solid particles with the diameter of 2-6 mm.
6. The process of manufacturing zirconia multi-color brackets of claim 1, wherein: in the step (6), the sintering temperature is 1300-1800 ℃, and the sintering time is 8-12 h.
7. The process of manufacturing zirconia multi-color brackets of claim 6, wherein: in the step (6), the sintering temperature is 1800 ℃ and the sintering time is 12 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911287320.9A CN110981471A (en) | 2019-12-14 | 2019-12-14 | Process for manufacturing zirconium oxide multi-color bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911287320.9A CN110981471A (en) | 2019-12-14 | 2019-12-14 | Process for manufacturing zirconium oxide multi-color bracket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110981471A true CN110981471A (en) | 2020-04-10 |
Family
ID=70093547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911287320.9A Pending CN110981471A (en) | 2019-12-14 | 2019-12-14 | Process for manufacturing zirconium oxide multi-color bracket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110981471A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111548151A (en) * | 2020-05-19 | 2020-08-18 | 盐城工学院 | Colorful ceramic mobile phone backboard and production process thereof |
| CN115650706A (en) * | 2022-10-31 | 2023-01-31 | 熵瓷功能材料(江苏)有限公司 | Preparation method of high-entropy ceramic color bracket |
| CN115677346A (en) * | 2022-11-07 | 2023-02-03 | 北京赛乐米克材料科技有限公司 | Preparation method of color zirconium gem ceramic nose pad |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0833650A (en) * | 1994-07-21 | 1996-02-06 | Shinagawa Refract Co Ltd | Dental orthodontic bracket and its production |
| CN102083872A (en) * | 2008-07-15 | 2011-06-01 | 中国石油化工集团公司 | An injection-foamable styrene-base monomer-diolefin copolymer, preparation methods and uses thereof |
| CN102285795A (en) * | 2011-05-30 | 2011-12-21 | 北京大学口腔医学院 | Dental compound-color cuttable zirconia ceramic and preparation method thereof |
| CN102438964A (en) * | 2009-03-23 | 2012-05-02 | 株式会社则武 | Fluorescent zirconia material |
| CN103382112A (en) * | 2013-06-28 | 2013-11-06 | 无锡特科精细陶瓷有限公司 | Preparation method of dark-blue zirconia ceramic |
| CN103641472A (en) * | 2013-11-14 | 2014-03-19 | 厦门惠方生物科技有限公司 | Method for preparing coloring semipermeable zirconia presintered body |
| CN104788095A (en) * | 2015-01-29 | 2015-07-22 | 包头市金格瑞新型陶瓷有限责任公司 | Dental use color zirconia powder preparation method |
| CN106336216A (en) * | 2015-07-07 | 2017-01-18 | 北京欧纳材料科技有限公司 | Zirconia dental ceramic with gradient change color and preparation method thereof |
| CN106633073A (en) * | 2016-12-28 | 2017-05-10 | 广东昭信照明科技有限公司 | Thermosetting ceramic injection molding material and preparation method thereof |
-
2019
- 2019-12-14 CN CN201911287320.9A patent/CN110981471A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0833650A (en) * | 1994-07-21 | 1996-02-06 | Shinagawa Refract Co Ltd | Dental orthodontic bracket and its production |
| CN102083872A (en) * | 2008-07-15 | 2011-06-01 | 中国石油化工集团公司 | An injection-foamable styrene-base monomer-diolefin copolymer, preparation methods and uses thereof |
| CN102438964A (en) * | 2009-03-23 | 2012-05-02 | 株式会社则武 | Fluorescent zirconia material |
| CN102285795A (en) * | 2011-05-30 | 2011-12-21 | 北京大学口腔医学院 | Dental compound-color cuttable zirconia ceramic and preparation method thereof |
| CN103382112A (en) * | 2013-06-28 | 2013-11-06 | 无锡特科精细陶瓷有限公司 | Preparation method of dark-blue zirconia ceramic |
| CN103641472A (en) * | 2013-11-14 | 2014-03-19 | 厦门惠方生物科技有限公司 | Method for preparing coloring semipermeable zirconia presintered body |
| CN104788095A (en) * | 2015-01-29 | 2015-07-22 | 包头市金格瑞新型陶瓷有限责任公司 | Dental use color zirconia powder preparation method |
| CN106336216A (en) * | 2015-07-07 | 2017-01-18 | 北京欧纳材料科技有限公司 | Zirconia dental ceramic with gradient change color and preparation method thereof |
| CN106633073A (en) * | 2016-12-28 | 2017-05-10 | 广东昭信照明科技有限公司 | Thermosetting ceramic injection molding material and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 樊明文: "《中华医学百科全书2临床医学口腔医学》", 30 November 2018 * |
| 王迎军: "《新型材料科学与技术无机材料卷上》", 31 October 2016 * |
| 陈英南: "《常用化工单元设备的设计 第2版》", 30 June 2017 * |
| 高建成: "粉末注射成型氧化锆喂料的制备及成型研究", 《安徽大学学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111548151A (en) * | 2020-05-19 | 2020-08-18 | 盐城工学院 | Colorful ceramic mobile phone backboard and production process thereof |
| CN115650706A (en) * | 2022-10-31 | 2023-01-31 | 熵瓷功能材料(江苏)有限公司 | Preparation method of high-entropy ceramic color bracket |
| CN115677346A (en) * | 2022-11-07 | 2023-02-03 | 北京赛乐米克材料科技有限公司 | Preparation method of color zirconium gem ceramic nose pad |
| CN115677346B (en) * | 2022-11-07 | 2023-09-12 | 北京赛乐米克材料科技有限公司 | Preparation method of colored zirconium precious stone ceramic nose pad |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110981471A (en) | Process for manufacturing zirconium oxide multi-color bracket | |
| CN107244914B (en) | A kind of colored zirconia ceramics | |
| CN103265287B (en) | Ceramic wristwatch dial and manufacturing method thereof | |
| CN105601274B (en) | A method of quickly preparing zirconium oxide dental prosthesis | |
| CN104909745B (en) | Preparation method for uniform gradient-colour zirconium oxide porcelain blocks | |
| CN104540795B (en) | Method for manufacturing coloring ceramics via colloidal dispersion followed by conventional pressing techniques | |
| JP2015531646A (en) | Method for producing zirconia block for artificial tooth having hue gradient | |
| CN104446457A (en) | Modified zirconium oxide ceramic material and application thereof | |
| CN107043254B (en) | A kind of black zirconia ceramics and preparation method thereof | |
| CN103764598A (en) | Method for doping or colouring ceramics, glass ceramics, or glass | |
| CN105884347A (en) | Method for preparing high-performance dental zirconium oxide ceramic | |
| CN102285795A (en) | Dental compound-color cuttable zirconia ceramic and preparation method thereof | |
| CN112661504B (en) | Preparation method of zirconia dental material | |
| CN106187319A (en) | A kind of zirconium oxide soaks coloration and dyeing technique | |
| CN1822796B (en) | Process for producing dental prosthesis and kit for use therein | |
| CN101279356B (en) | Coating for sand casting of rare-earth magnesium alloy coated sand and method of use thereof | |
| JP2018179996A (en) | Ceramic component for timepiece | |
| CN113336542A (en) | High-transmittance zirconia ceramic formula, paste preparation method and dental crown preparation method | |
| CN109650853A (en) | A kind of preparation method of crystalline ceramics locking bracket | |
| KR100934595B1 (en) | Methods of making dental prostheses and kits for use therein | |
| CN105130431A (en) | Personalized colorful zirconia dental bracket and preparation method thereof | |
| CN106431360A (en) | Material for dental restoration and method for preparing dental restoration | |
| CN109734444A (en) | A kind of zirconium oxide immersion coloration and dyeing method | |
| CN108558395A (en) | A kind of zirconia ceramics material composition and its application | |
| CN108585840A (en) | A kind of production method of Colored zirconia ceramics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |