CN114953095A - Die pressing process for manufacturing ceramic composite material filter for communication - Google Patents
Die pressing process for manufacturing ceramic composite material filter for communication Download PDFInfo
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- CN114953095A CN114953095A CN202110195175.2A CN202110195175A CN114953095A CN 114953095 A CN114953095 A CN 114953095A CN 202110195175 A CN202110195175 A CN 202110195175A CN 114953095 A CN114953095 A CN 114953095A
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- titanate
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- plastic
- molding
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- 239000000919 ceramic Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 230000008569 process Effects 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000004891 communication Methods 0.000 title claims abstract description 17
- 238000007723 die pressing method Methods 0.000 title description 11
- 239000000463 material Substances 0.000 claims abstract description 66
- 239000004033 plastic Substances 0.000 claims abstract description 43
- 229920003023 plastic Polymers 0.000 claims abstract description 43
- 239000000843 powder Substances 0.000 claims abstract description 34
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 9
- 238000005245 sintering Methods 0.000 claims abstract description 5
- 239000000047 product Substances 0.000 claims description 37
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 23
- 238000002156 mixing Methods 0.000 claims description 20
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 15
- 229910052749 magnesium Inorganic materials 0.000 claims description 15
- 239000011777 magnesium Substances 0.000 claims description 15
- 238000001746 injection moulding Methods 0.000 claims description 13
- 238000000465 moulding Methods 0.000 claims description 13
- AOWKSNWVBZGMTJ-UHFFFAOYSA-N calcium titanate Chemical compound [Ca+2].[O-][Ti]([O-])=O AOWKSNWVBZGMTJ-UHFFFAOYSA-N 0.000 claims description 11
- LFSBSHDDAGNCTM-UHFFFAOYSA-N cobalt(2+);oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[O-2].[Ti+4].[Co+2] LFSBSHDDAGNCTM-UHFFFAOYSA-N 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- 238000000748 compression moulding Methods 0.000 claims description 6
- 239000011265 semifinished product Substances 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 5
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 3
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 229920002530 polyetherether ketone Polymers 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 4
- 229910010272 inorganic material Inorganic materials 0.000 abstract description 3
- 239000011147 inorganic material Substances 0.000 abstract description 3
- 229910052772 Samarium Inorganic materials 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/008—Producing shaped prefabricated articles from the material made from two or more materials having different characteristics or properties
-
- 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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/20—Polyamides
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00844—Uses not provided for elsewhere in C04B2111/00 for electronic applications
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a mold pressing process for manufacturing a ceramic composite filter for communication, which can be combined with the high dielectric property of a ceramic product and the high precision and easy mass production property of plastics to provide a composite filter product which does not need sintering and precision processing, has small thermal deformation of pure plastics, high dielectric property and high quality factor. This ceramic composite filter for communication makes mould pressing technology, adopt most material to be inorganic material, therefore the dielectric coefficient of material is higher relatively, and dielectric coefficient can carry out certain adjustment through powder content simultaneously, for pure plastic material, quality factor and dielectric coefficient improve very greatly, and because a large amount of inorganic matters add, the holistic hardness of product and thermal expansion coefficient are littleer compared with the plastic product, and stability is also higher, and the better plastic material of cooperation thermal stability makes the thermal expansion coefficient of product be enough to satisfy the user demand.
Description
Technical Field
The invention relates to the technical field of photoelectric information, in particular to a die pressing process for manufacturing a ceramic composite material filter for communication.
Background
At present, in 5G filter products, ceramic products are commonly used, mainly, the ceramic products have the characteristics of high hardness and high strength, so the ceramic products are widely applied to electronic products in use, but the ceramic products need to be sintered, the sintered ceramic products need secondary machining due to the fact that the size precision does not meet the design requirements, and further the problems of limited capacity and increased machining cost are caused, meanwhile, the ceramic has the characteristics of high hardness and high strength, so the machining of the ceramic products also has the problems of high cost and easiness in cracking, in the molding of the products, the injection molding has the characteristics of batch repeatability, low cost and high precision, but pure plastics have the problems of low dielectric constant and low quality factor in the use process of the filter, the product needs larger size in the structural design, and is greatly limited in actual product application, pure plastics's material in the use of material, under the condition of high low temperature, the expend with heat and contract with cold change of size is bigger for some relatively to ceramic, has very big influence to the stability of filter, for this reason, to sum up the problem, the application provides a ceramic composite filter for communication and makes mould pressing technology and carry out the pertinence solution.
Disclosure of Invention
Technical problem to be solved
The invention provides a die pressing process for manufacturing a ceramic composite filter for communication, which aims at the defects of the prior art and solves the problems in the background technology.
(II) technical scheme
1. In order to achieve the purpose, the invention provides the following technical scheme: the mold pressing process for manufacturing the ceramic composite material filter for communication can be combined with the high dielectricity of a ceramic product and the high-precision and easy-mass-production performance of plastics to provide a composite material filter product which does not need sintering and precision processing, has small thermal deformation of pure plastics, high dielectricity and high quality factor, and specifically comprises the following operations:
the first step is as follows: preparation of ceramic powder raw material
Firstly, weighing a proper amount of three materials of magnesium titanate, cobalt titanate and calcium titanate, wherein the mass ratio of the three materials is 88.35:5.65:7, putting the weighed three kinds of powder into a ball mill for uniform mixing, and taking out the prepared ceramic powder mixed material for later use;
the second step is that: granulating process
Mixing the ceramic powder mixed material prepared in the first step with one or more of a plurality of plastic materials such as PI, PPA, PEEK, PP, PF and the like, preferably plastic with small coefficient of expansion with heat and contraction with cold, wherein the ceramic powder material and the plastic material respectively account for 85-93% by mass and 7-15% by mass, mixing the ceramic powder material and the plastic material, placing the mixture and the plastic material into an internal mixing granulator, heating the mixture by using the internal mixing granulator to melt the five plastic materials, uniformly mixing the mixture with powder, and preparing the mixed material into a material with the size of plastic particles;
the third step: compression molding
Putting the granular material obtained in the second step into a mould pressing device, and then carrying out mould pressing forming to obtain a semi-finished product;
the fourth step: processing of semi-finished products
And performing burr repairing and gate processing on the injection molded product in the injection molding equipment to obtain the required product.
Preferably, in the first step, the magnesium titanate, the cobalt titanate and the calcium titanate in the ceramic powder raw material may be prepared in a mass ratio of the magnesium titanate, the cobalt titanate and the calcium titanate: 76: 4: 20 in proportion.
Preferably, the ceramic powder raw material in the first step may also be magnesium titanate: zinc titanate, samarium titanate were prepared, and magnesium titanate: the mass ratio of the zinc titanate to the samarium titanate is 88.35:5.65: 7.
Preferably, the internal mold cavity of the injection molding apparatus in the third step needs to take the molding shrinkage rate of the material into consideration, and the mold size needs to be the product size plus the molding yield size.
(III) advantageous effects
The invention provides a die pressing process for manufacturing a ceramic composite material filter for communication, which has the following beneficial effects:
(1) this ceramic composite filter for communication makes mould pressing technology, adopt most material to be inorganic material, therefore the dielectric coefficient of material is higher relatively, and dielectric coefficient can carry out certain adjustment through powder content simultaneously, for pure plastic material, quality factor and dielectric coefficient improve very greatly, and because a large amount of inorganic matters add, the holistic hardness of product and thermal expansion coefficient are littleer compared with the plastic product, and stability is also higher, and the better plastic material of cooperation thermal stability makes the thermal expansion coefficient of product be enough to satisfy the user demand.
(2) The ceramic composite material filter for communication is manufactured by a die pressing process, a composite material form of mixing ceramic powder and plastic is adopted, high solid content ceramic powder is added into a plastic material to form a material with certain fluidity, the material is subjected to injection molding or die pressing to obtain a filter product with high solid content, the product is not subjected to sintering, the precision is high, the cost is low, the dielectric coefficient is large, the product is very suitable for the production of filters in large batches, the material with better fluidity is suitable for an injection molding process, the material fluidity of the die pressing process is superior to that of the die pressing process, the material can flow laterally, but the requirement of injection molding on the fluidity cannot be met, and the die pressing process is adopted, which is different from injection molding and die pressing.
Detailed Description
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that: the mold pressing process for manufacturing the ceramic composite material filter for communication can be combined with the high dielectricity of a ceramic product and the high-precision and easy-mass-production performance of plastics to provide a composite material filter product which does not need sintering and precision processing, has small thermal deformation of pure plastics, high dielectricity and high quality factor, and specifically comprises the following operations:
the first step is as follows: preparation of ceramic powder raw material
Firstly, weighing three materials of magnesium titanate, cobalt titanate and calcium titanate with proper amount, wherein the mass ratio of the magnesium titanate to the cobalt titanate to the calcium titanate is 88.35:5.65: and 7, uniformly mixing the weighed three kinds of powder in a ball mill, taking out the prepared ceramic powder mixed material for later use, wherein the preparation proportion of magnesium titanate, cobalt titanate and calcium titanate in the ceramic powder raw material in the first step can also adopt the mass ratio of magnesium titanate, cobalt titanate and calcium titanate: 76: 4: 20, the ceramic powder in the first step may also be prepared from magnesium titanate: zinc titanate, samarium titanate were prepared, and magnesium titanate: the mass ratio of the zinc titanate to the samarium titanate is 88.35:5.65: 7;
the second step is that: granulating process
Mixing the ceramic powder mixed material prepared in the first step with one or more of a plurality of plastic materials such as PI, PPA, PEEK, PP, PF and the like, preferably plastic with small coefficient of expansion with heat and contraction with cold, wherein the ceramic powder material and the plastic material respectively account for 85-93% by mass and 7-15% by mass, mixing the ceramic powder material and the plastic material, placing the mixture and the plastic material into an internal mixing granulator, heating the mixture by using the internal mixing granulator to melt the five plastic materials, uniformly mixing the mixture with powder, and preparing the mixed material into a material with the size of plastic particles;
the third step: compression molding
Putting the granular materials obtained in the second step into injection molding equipment, and then carrying out compression molding to obtain a semi-finished product, wherein the molding shrinkage rate of the materials needs to be considered in a mold cavity in the molding equipment in the third step, and the size of the mold needs to be added with the size of the product and the molding yield;
the fourth step: processing of semi-finished products
And performing burr repairing and gate treatment on the product injection-molded by the injection molding equipment to obtain the required product after finishing the burr repairing and gate treatment.
In summary, the molding process for manufacturing the ceramic composite material filter for communication comprises the steps of adding ceramic powder with high solid content into a plastic material by adopting a composite material form of mixing ceramic powder and plastic to form a material with certain fluidity, and obtaining a filter product with high solid content after injection molding or compression molding of the material, wherein the product is not sintered, has high precision, low cost and larger dielectric coefficient and is very suitable for mass production of filters, and most of the materials are inorganic materials, so the dielectric coefficient of the material is relatively higher, and meanwhile, the dielectric coefficient can be adjusted to a certain degree through the powder content, the quality factor and the dielectric coefficient are greatly improved compared with pure plastic materials, and the integral hardness and the thermal expansion coefficient of the product are smaller than those of the plastic products due to the addition of a large amount of inorganic substances, and the stability is higher, the thermal expansion coefficient of the filtering product can meet the use requirement by matching with a plastic material with good thermal stability and small thermal expansion coefficient.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A mold pressing process for manufacturing a ceramic composite material filter for communication is characterized by comprising the following steps: the molding process for manufacturing the ceramic composite material filter for communication can be combined with the high-dielectric property and the high-precision easy mass production property of a ceramic product, provides a composite material filter product which does not need sintering and precision processing, has small thermal deformation of pure plastic, high dielectric property and high quality factor, is suitable for product molding with certain material flowability and can not meet the injection molding requirement, and specifically comprises the following operations:
the first step is as follows: preparation of ceramic powder raw material
Firstly, weighing three materials of magnesium titanate, cobalt titanate and calcium titanate with proper amount, wherein the mass ratio of the magnesium titanate to the cobalt titanate to the calcium titanate is 88.35:5.65:7, putting the weighed three kinds of powder into a ball mill for uniform mixing, and taking out the prepared ceramic powder mixed material for later use;
the second step: granulating process
Mixing the ceramic powder mixed material prepared in the first step with plastic materials such as PI, PPA, PEEK, PP, PF and the like, wherein the mass fraction ratio of the ceramic powder material to the plastic material is 85-93% of the ceramic powder material, and 7-15% of the plastic material, respectively, mixing the ceramic powder material and the plastic material, placing the mixture into an internal mixing granulator, heating the internal mixing granulator to melt the plastic material, uniformly mixing the plastic material with powder, and preparing the mixed material into a material with a plastic particle size;
the third step: compression molding
Putting the granular material obtained in the second step into a mould pressing device, and then carrying out mould pressing forming to obtain a semi-finished product;
the fourth step: processing of semi-finished products
And (3) performing burr repairing and sprue processing on the product molded by the compression molding in the injection molding equipment to obtain the required product after finishing.
2. The process for manufacturing and molding a ceramic composite filter for communication according to claim 1, wherein: in the first step, the preparation proportion of magnesium titanate, cobalt titanate and calcium titanate in the ceramic powder raw material can also adopt the mass ratio of magnesium titanate, cobalt titanate and calcium titanate as follows: 76: 4: 20 in proportion.
3. The process for manufacturing and molding a ceramic composite filter for communication according to claim 1, wherein: in the third step, the molding shrinkage of the material needs to be considered in the mold cavity of the internal mold of the injection molding equipment, and the size of the mold needs the product size plus the molding yield size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110195175.2A CN114953095A (en) | 2021-02-22 | 2021-02-22 | Die pressing process for manufacturing ceramic composite material filter for communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110195175.2A CN114953095A (en) | 2021-02-22 | 2021-02-22 | Die pressing process for manufacturing ceramic composite material filter for communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114953095A true CN114953095A (en) | 2022-08-30 |
Family
ID=82954338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110195175.2A Pending CN114953095A (en) | 2021-02-22 | 2021-02-22 | Die pressing process for manufacturing ceramic composite material filter for communication |
Country Status (1)
| Country | Link |
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| CN (1) | CN114953095A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1506728A (en) * | 1975-06-24 | 1978-04-12 | Poroton Ag | Ceramics |
| US5340510A (en) * | 1993-04-05 | 1994-08-23 | Materials Systems Incorporated | Method for making piezoelectric ceramic/polymer composite transducers |
| EP0716908A1 (en) * | 1994-12-15 | 1996-06-19 | Klaus Dipl.-Ing. Strobel | Process and apparatus for the production of ceramic products |
| KR19990016497A (en) * | 1997-08-12 | 1999-03-05 | 김일수 | Manufacturing method of high performance plastic products by adding ceramic particles |
| JPH1199534A (en) * | 1997-09-30 | 1999-04-13 | Ngk Insulators Ltd | Injection molded composite consisting of plastic and ceramic and its production |
| JPH11106559A (en) * | 1997-09-30 | 1999-04-20 | Ngk Insulators Ltd | Plastic/ceramic composite material |
| JPH11106560A (en) * | 1997-09-30 | 1999-04-20 | Ngk Insulators Ltd | Plastic/ceramic composite material |
| CN1291538A (en) * | 1999-09-10 | 2001-04-18 | 精工电子有限公司 | Shaping method of ceramics |
| CN1377856A (en) * | 2002-04-30 | 2002-11-06 | 施江澜 | Ceramic colloidal moulding technology |
| CN1490276A (en) * | 2003-09-05 | 2004-04-21 | 清华大学 | Material formula for precisive ceramic parts and injection moulding preparing method thereof |
| CN104589575A (en) * | 2014-11-27 | 2015-05-06 | 东莞劲胜精密组件股份有限公司 | Ceramic and plastic composite structure and manufacturing method thereof |
| CN111606722A (en) * | 2020-05-21 | 2020-09-01 | 苏州瑞玛精密工业股份有限公司 | Injection molding binder for preparing dielectric filter ceramic product and application thereof |
-
2021
- 2021-02-22 CN CN202110195175.2A patent/CN114953095A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1506728A (en) * | 1975-06-24 | 1978-04-12 | Poroton Ag | Ceramics |
| US5340510A (en) * | 1993-04-05 | 1994-08-23 | Materials Systems Incorporated | Method for making piezoelectric ceramic/polymer composite transducers |
| EP0716908A1 (en) * | 1994-12-15 | 1996-06-19 | Klaus Dipl.-Ing. Strobel | Process and apparatus for the production of ceramic products |
| KR19990016497A (en) * | 1997-08-12 | 1999-03-05 | 김일수 | Manufacturing method of high performance plastic products by adding ceramic particles |
| JPH1199534A (en) * | 1997-09-30 | 1999-04-13 | Ngk Insulators Ltd | Injection molded composite consisting of plastic and ceramic and its production |
| JPH11106559A (en) * | 1997-09-30 | 1999-04-20 | Ngk Insulators Ltd | Plastic/ceramic composite material |
| JPH11106560A (en) * | 1997-09-30 | 1999-04-20 | Ngk Insulators Ltd | Plastic/ceramic composite material |
| CN1291538A (en) * | 1999-09-10 | 2001-04-18 | 精工电子有限公司 | Shaping method of ceramics |
| CN1377856A (en) * | 2002-04-30 | 2002-11-06 | 施江澜 | Ceramic colloidal moulding technology |
| CN1490276A (en) * | 2003-09-05 | 2004-04-21 | 清华大学 | Material formula for precisive ceramic parts and injection moulding preparing method thereof |
| CN104589575A (en) * | 2014-11-27 | 2015-05-06 | 东莞劲胜精密组件股份有限公司 | Ceramic and plastic composite structure and manufacturing method thereof |
| CN111606722A (en) * | 2020-05-21 | 2020-09-01 | 苏州瑞玛精密工业股份有限公司 | Injection molding binder for preparing dielectric filter ceramic product and application thereof |
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Application publication date: 20220830 |
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