CN104319469B - Preparation method for micro-strip ceramic antenna - Google Patents
Preparation method for micro-strip ceramic antenna Download PDFInfo
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Abstract
The invention discloses a preparation method for a micro-strip ceramic antenna. The preparation method for the micro-strip ceramic antenna includes steps that 1) adding ceramic powder into mixed liquid of water and glycol; 2) adding ammonium polyacrylate; 3) adding the mixture of acrylic amide and N,N'-methylene bisacrylamide; 4) adding ammonium persulphate and tetramethylethylenediamine, pouring into a mould, preserving heat for 30 minutes to 2 hours at 65 to 90 degrees centigrade, and demoulding to obtain a ceramic blank; 5) dumping and sintering the ceramic blank body to obtain a piece of ceramic tile; 6) using silver slurry to metalize the upper and lower surfaces of the ceramic tile, and inserting a silver needle in a feed hole to obtain the micro-strip ceramic antenna. The micro-strip ceramic antenna is formed under normal pressure and does not need powder compression, the needle is made of ordinary metal, plastic or glass, and the micro-strip ceramic antenna is capable of being formed even the aperture is less than 0.5 millimeters; the mould material and design cost are reduced, and meanwhile, the cured blank body is high in intensity and easy to demould.
Description
Technical field
The invention belongs to micro-strip paster antenna technical field is and in particular to a kind of preparation method of micro-strip ceramic antenna.
Background technology
Microstrip antenna is the class new antenna growing up for nearly 30 years.Its feature is small volume, lightweight, thin putting down
Face structure, can conformal with aircraft it is easy to integrated with printed circuit board (PCB), manufacturing process is simple, low cost, it is easy to accomplish linear polarization
Or circular polarisation, can obtain the figure of unidirectional cross direction, it has been widely used in the broad neck of 100MHz ~ 100GHz at present
In domain, including GPS, Beidou navigation, satellite communication, radar, guided missile, environmental monitoring, biomedicine, portable radio device
Deng.
The microstrip antenna preparation technology navigating in prior art is to adopt binding agent（Such as PVA, PVB）By microwave-medium
Ceramic porcelain powder granulation, through the dry-pressing formed ceramic body being formed with feed-through of the dry pressing die set with type pin, follow-up dumping burns
Knot makes medium ceramics, in the upper and lower surface printing silver conductive layer of ceramics, forms earth plate and has effigurate paster,
Insertion acupuncture needle feed at feed-through on ceramics, forms microstrip antenna simultaneously.With the microstrip antenna navigating to multifrequency, wideband side
To development, the upper aperture of ceramics is less and less, and hole gets more and more, and blank shape becomes increasingly complex, and is become using this technical scheme
The yields straight line of type declines.Powder compression ratio typically larger than 2 during dry-pressing, molding thickness is 5mm, aperture is less than the pottery of 1mm
During ceramics, the draw ratio of type pin is more than 10, and superfine type pin often occurs bending under the briquetting pressure more than 100MPa, breaks
Split or be difficult to the phenomenon of the demoulding, more rigors, the design of mould are proposed using this scheme to the material of type pin
Accordingly difficult.When aperture is less than 0.5mm, it has been difficult to be molded using this scheme.Therefore dry pressuring forming process scheme is not
The developing direction of microstrip antenna can be met.
Content of the invention
In view of this, it is an object of the invention to provide a kind of preparation method of micro-strip ceramic antenna, the method can become
Type is less than the hole of 1mm and the ceramic body of complicated shape, and reduces material and the design cost of mould.
For reaching above-mentioned purpose, the present invention provides following technical scheme：
The preparation method of the micro-strip ceramic antenna of the present invention, comprises the following steps：
1）According to 1 ~ 3:1 molar ratio water and the mixed liquor of ethylene glycol, ceramic powder is added water and ethylene glycol
In mixed liquor, ceramic powder of the total volume 40% ~ 60%, obtain ceramic powder slurry；
2）Weigh the ammonium polyacrylate addition step 1 accounting for ceramic powder quality 0.3% ~ 3%）In the slurry obtaining；
3）According to 10 ~ 20:1 molar ratio acrylamide and N, the mixture of N'- methylene-bisacrylamide, weigh
Account for acrylamide and the N of ceramic powder quality 3% ~ 10%, the mixture of N'- methylene-bisacrylamide adds step 2）Obtain
In slurry, mix；
4）In step 3）Pour in mould, 65 ~ 90 after adding ammonium persulfate and tetramethylethylenediamine in the slurry obtaining
DEG C insulation 30min ~ 2h after the demoulding obtain ceramic body；
5）By step 4）Ceramic ceramics is obtained after the ceramic blank-body exhaust glue sintering obtaining；
6）In step 5）The ceramic ceramics upper and lower surface silver paste metallization obtaining, then insert acupuncture needle in feed-through, obtain final product
To micro-strip ceramic antenna.
Further, described step 1）In, ceramic powder is 99.4wt% ~ 98.5wt% [0.93 (Mg0.97Zn0.03)TiO3-
0.07CaTiO3], 0.3wt% ~ 0.7wt%CuO and 0.3wt% ~ 0.8wt%La2O3Mixed powder, by above-mentioned three kinds of raw materials in ball
In grinding machine, ball milling 8 ~ 12h post-drying obtains described ceramic powder.
Further, described 0.93 (Mg0.97Zn0.03)TiO3-0.07CaTiO3] prepare as follows：According to chemical formula
0.93(Mg0.97Zn0.03)TiO3-0.07CaTiO3Weigh zinc oxide, magnesium hydroxide, titanium oxide and calcium carbonate, by the raw material weighing
Add in ball grinder and wet ball grinding 8 ~ 12h is carried out for medium with absolute ethyl alcohol, then dry, 1000 ~ 1200 DEG C of insulation 2 ~ 4h obtain
Arrive.
Further, described step 3）In, hybrid mode is ball milling mixing, and Ball-milling Time is 4 ~ 8h, and the amount of zirconium ball is slurry
1 ~ 2 times of total amount.
Further, described step 5）In, the concrete grammar of dumping sintering is：The heating rate of room temperature ~ 600 DEG C be less than 2 DEG C/
Min, is incubated 1 ~ 2h at 600 DEG C, and 600 ~ 1400 DEG C of heating rate is less than 5 DEG C/min, is incubated 1 ~ 6h at 1300 ~ 1400 DEG C, with
Speed less than 5 DEG C/min is down to room temperature.
Further, described step 6）In, the metallized concrete grammar of silver paste is：In ceramic ceramics upper and lower surface brush 10 ~ 30 μ
It is incubated 10 ~ 20min at 800 ~ 850 DEG C after the thick silver paste of m.
The beneficial effects of the present invention is：
The present invention is molded at ambient pressure, is not related to the compression of powder, and type pin selects common metal, plastics or glass equal
Can, and can also be molded when being less than 0.5mm when aperture, reduce material and the design cost of mould.Meanwhile, the base substrate after solidification
Intensity high it is easy to the demoulding, can be machined out before sintering, it is to avoid the problem of processing difficulties after ceramic post sintering.
Brief description
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below to carry out
Explanation：
The pictorial diagram of the ceramic ceramics that Fig. 1 prepares for the embodiment of the present invention 1.
Specific embodiment
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, below by the preferred reality to the present invention
Apply example to be described in detail.
Embodiment 1
The preparation method of the micro-strip ceramic antenna of the present embodiment, comprises the following steps：
Prepare 0.93 (Mg first0.97Zn0.03)TiO3-0.07CaTiO3] powder：According to chemical formula 0.93 (Mg0.97Zn0.03)
TiO3-0.07CaTiO3Weigh zinc oxide, magnesium hydroxide, titanium oxide and calcium carbonate, the raw material weighing is added in ball grinder with no
Water-ethanol carries out wet ball grinding 8h for medium, then dries, and 1200 DEG C of insulation 4h obtain.Then weigh 99.4wt% [0.93
(Mg0.97Zn0.03)TiO3-0.07CaTiO3], 0.3wt%CuO and 0.3wt%La2O3, by above-mentioned three kinds of raw material balls in ball mill
Mill 12h post-drying obtains ceramic powder.
1）According to 3:1 molar ratio water and the mixed liquor of ethylene glycol, ceramic powder is added the mixed of water and ethylene glycol
Close in liquid, ceramic powder of the total volume 60%, obtain ceramic powder slurry；
2）Weigh the ammonium polyacrylate addition step 1 accounting for ceramic powder quality 3%）In the slurry obtaining；
3）According to 20:1 molar ratio acrylamide and N, the mixture of N'- methylene-bisacrylamide, weigh and account for
The acrylamide of ceramic powder quality 10% and N, the mixture of N'- methylene-bisacrylamide adds step 2）The slurry obtaining
In, add ball milling mixing 8h after 2 times of zirconium ball of slurry total amount in the slurry；
4）In step 3）42.7mm*42.7mm* is poured into after adding ammonium persulfate and tetramethylethylenediamine in the slurry obtaining
9.6mm carries in the mould of 7 contact pins of different sizes, and the demoulding after 90 DEG C of insulation 30min obtains ceramic body, using 3 points
The intensity that Bending Resistance Tester tests this base substrate is 11.5Mpa, much larger than the ceramic body intensity after dry-pressing；
5）By step 4）The ceramic blank-body exhaust glue sintering obtaining：1 DEG C/the min of heating rate of room temperature ~ 600 DEG C, at 600 DEG C
Insulation 2h, 600 ~ 1400 DEG C of 4 DEG C/min of heating rate, are incubated 6h at 1400 DEG C, are down to room temperature with the speed of 4 DEG C/min, obtain
To ceramic ceramics, as shown in figure 1, two height at the 1.5mm of distance center hole for this ceramic ceramics obtaining are more than 8mm leading to
Hole, its aperture is 0.5mm；Prepare this potsherd according to dry process, the height of filling powder will exceed 16mm, and type pin
Diameter is less than 0.7mm, and the draw ratio of type pin is more than 20, and compacting rear profile pin will be difficult to the demoulding；
6）In step 5）It is incubated 20min at 850 DEG C after the silver paste of ceramic ceramics upper and lower surface brush 30 μ m-thick obtaining, obtain
Metallized pottery ceramics, then insert acupuncture needle in feed-through, that is, obtain micro-strip ceramic antenna.
Embodiment 2
The preparation method of the micro-strip ceramic antenna of the present embodiment, comprises the following steps：
Prepare 0.93 (Mg first0.97Zn0.03)TiO3-0.07CaTiO3] powder：According to chemical formula 0.93 (Mg0.97Zn0.03)
TiO3-0.07CaTiO3Weigh zinc oxide, magnesium hydroxide, titanium oxide and calcium carbonate, the raw material weighing is added in ball grinder with no
Water-ethanol carries out wet ball grinding 12h for medium, then dries, and 1000 DEG C of insulation 2h obtain.Then weigh 98.5wt% [0.93
(Mg0.97Zn0.03)TiO3-0.07CaTiO3], 0.7wt%CuO and 0.8wt%La2O3, by above-mentioned three kinds of raw material balls in ball mill
Mill 8h post-drying obtains ceramic powder.
1）According to 1:1 molar ratio water and the mixed liquor of ethylene glycol, ceramic powder is added the mixed of water and ethylene glycol
Close in liquid, ceramic powder of the total volume 40%, obtain ceramic powder slurry；
2）Weigh the ammonium polyacrylate addition step 1 accounting for ceramic powder quality 0.3%）In the slurry obtaining；
3）According to 10:1 molar ratio acrylamide and N, the mixture of N'- methylene-bisacrylamide, weigh and account for
The acrylamide of ceramic powder quality 3% and N, the mixture of N'- methylene-bisacrylamide adds step 2）The slurry obtaining
In, add ball milling mixing 4h after 1 times of zirconium ball of slurry total amount in the slurry；
4）In step 3）28.7mm*28.7mm* is poured into after adding ammonium persulfate and tetramethylethylenediamine in the slurry obtaining
5.6mm is equipped with the mould of 0.5mm contact pin in centre bit, and the demoulding after 65 DEG C of insulation 2h obtains ceramic body；
5）By step 4）The ceramic blank-body exhaust glue sintering obtaining：1 DEG C/the min of heating rate of room temperature ~ 600 DEG C, at 600 DEG C
Insulation 1h, 600 ~ 1400 DEG C of 4 DEG C/min of heating rate, are incubated 1h at 1400 DEG C, are down to room temperature with the speed of 4 DEG C/min, obtain
To ceramic ceramics；
6）In step 5）It is incubated 20min at 800 DEG C after the silver paste of ceramic ceramics upper and lower surface brush 10 μ m-thick obtaining, obtain
Metallized pottery ceramics, then insert acupuncture needle in feed-through, that is, obtain micro-strip ceramic antenna.
Embodiment 3
The preparation method of the micro-strip ceramic antenna of the present embodiment, comprises the following steps：
Prepare 0.93 (Mg first0.97Zn0.03)TiO3-0.07CaTiO3] powder：According to chemical formula 0.93 (Mg0.97Zn0.03)
TiO3-0.07CaTiO3Weigh zinc oxide, magnesium hydroxide, titanium oxide and calcium carbonate, the raw material weighing is added in ball grinder with no
Water-ethanol carries out wet ball grinding 11h for medium, then dries, and 1100 DEG C of insulation 3h obtain.Then weigh 99.0wt% [0.93
(Mg0.97Zn0.03)TiO3-0.07CaTiO3], 0.5wt%CuO and 0.5wt%La2O3, by above-mentioned three kinds of raw material balls in ball mill
Mill 10h post-drying obtains ceramic powder.
1）According to 2:1 molar ratio water and the mixed liquor of ethylene glycol, ceramic powder is added the mixed of water and ethylene glycol
Close in liquid, ceramic powder of the total volume 50%, obtain ceramic powder slurry；
2）Weigh the ammonium polyacrylate addition step 1 accounting for ceramic powder quality 1%）In the slurry obtaining；
3）According to 15:1 molar ratio acrylamide and N, the mixture of N'- methylene-bisacrylamide, weigh and account for
The acrylamide of ceramic powder quality 5% and N, the mixture of N'- methylene-bisacrylamide adds step 2）The slurry obtaining
In, add ball milling mixing 6h after 2 times of zirconium ball of slurry total amount in the slurry；
4）In step 3）28.7mm*28.7mm* is poured into after adding ammonium persulfate and tetramethylethylenediamine in the slurry obtaining
5.6mm is equipped with the mould of 0.5mm contact pin in centre bit, and the demoulding after 70 DEG C of insulation 1.5h obtains ceramic body；
5）By step 4）The ceramic blank-body exhaust glue sintering obtaining：1.5 DEG C/the min of heating rate of room temperature ~ 600 DEG C, 600
DEG C insulation 1h, 600 ~ 1400 DEG C of 3 DEG C/min of heating rate, 1400 DEG C be incubated 4h, room temperature is down to the speed of 3 DEG C/min,
Obtain ceramic ceramics；
6）In step 5）It is incubated 15min at 820 DEG C after the silver paste of ceramic ceramics upper and lower surface brush 20 μ m-thick obtaining, obtain
Metallized pottery ceramics, then insert acupuncture needle in feed-through, that is, obtain micro-strip ceramic antenna.
Embodiment 4
The preparation method of the micro-strip ceramic antenna of the present embodiment, comprises the following steps：
Prepare 0.93 (Mg first0.97Zn0.03)TiO3-0.07CaTiO3] powder：According to chemical formula 0.93 (Mg0.97Zn0.03)
TiO3-0.07CaTiO3Weigh zinc oxide, magnesium hydroxide, titanium oxide and calcium carbonate, the raw material weighing is added in ball grinder with no
Water-ethanol carries out wet ball grinding 9h for medium, then dries, and 1150 DEG C of insulation 3h obtain.Then weigh 99.0wt% [0.93
(Mg0.97Zn0.03)TiO3-0.07CaTiO3], 0.4wt%CuO and 0.6wt%La2O3, by above-mentioned three kinds of raw material balls in ball mill
Mill 11h post-drying obtains ceramic powder.
1）According to 2.5:1 molar ratio water and the mixed liquor of ethylene glycol, ceramic powder is added water and ethylene glycol
In mixed liquor, ceramic powder of the total volume 57%, obtain ceramic powder slurry；
2）Weigh the ammonium polyacrylate addition step 1 accounting for ceramic powder quality 0.5%）In the slurry obtaining；
3）According to 18:1 molar ratio acrylamide and N, the mixture of N'- methylene-bisacrylamide, weigh and account for
The acrylamide of ceramic powder quality 4% and N, the mixture of N'- methylene-bisacrylamide adds step 2）The slurry obtaining
In, add ball milling mixing 5h after 1 times of zirconium ball of slurry total amount in the slurry；
4）In step 3）28.7mm*28.7mm* is poured into after adding ammonium persulfate and tetramethylethylenediamine in the slurry obtaining
5.6mm is equipped with the mould of 0.5mm contact pin in centre bit, and the demoulding after 80 DEG C of insulation 1h obtains ceramic body；
5）By step 4）The ceramic blank-body exhaust glue sintering obtaining：1.5 DEG C/the min of heating rate of room temperature ~ 600 DEG C, 600
DEG C insulation 1.5h, 600 ~ 1400 DEG C of 2 DEG C/min of heating rate, 1400 DEG C be incubated 3h, room is down to the speed of 2 DEG C/min
Temperature, obtains ceramic ceramics；
6）In step 5）It is incubated 15min at 840 DEG C after the silver paste of ceramic ceramics upper and lower surface brush 25 μ m-thick obtaining, obtain
Metallized pottery ceramics, then insert acupuncture needle in feed-through, that is, obtain micro-strip ceramic antenna.
Finally illustrate, preferred embodiment above only in order to technical scheme to be described and unrestricted, although logical
Cross above preferred embodiment the present invention to be described in detail, it is to be understood by those skilled in the art that can be
In form and various changes are made to it, without departing from claims of the present invention limited range in details.
Claims (5)
1. a kind of preparation method of micro-strip ceramic antenna it is characterised in that：Comprise the following steps：
1）According to 1 ~ 3:1 molar ratio water and the mixed liquor of ethylene glycol, ceramic powder are added the mixing of water and ethylene glycol
In liquid, ceramic powder of the total volume 40% ~ 60%, obtain ceramic powder slurry；
2）Weigh the ammonium polyacrylate addition step 1 accounting for ceramic powder quality 0.3% ~ 3%）In the slurry obtaining；
3）According to 10 ~ 20:1 molar ratio acrylamide and N, the mixture of N'- methylene-bisacrylamide, weigh and account for pottery
The acrylamide of porcelain powder quality 3% ~ 10% and N, the mixture of N'- methylene-bisacrylamide adds step 2）The slurry obtaining
In, mix；
4）In step 3）Pour in mould after adding ammonium persulfate and tetramethylethylenediamine in the slurry obtaining, protect at 65 ~ 90 DEG C
The demoulding after warm 30min ~ 2h obtains ceramic body；
5）By step 4）Ceramic ceramics is obtained after the ceramic blank-body exhaust glue sintering obtaining；
6）In step 5）The ceramic ceramics upper and lower surface silver paste metallization obtaining, then insert acupuncture needle in feed-through, that is, obtain micro-
Band ceramic antenna；
Described step 1）In, ceramic powder is 99.4wt% ~ 98.5wt% [0.93 (Mg0.97Zn0.03)TiO3-0.07CaTiO3]、
0.3wt% ~ 0.7wt%CuO and 0.3wt% ~ 0.8wt%La2O3Mixed powder, by above-mentioned three kinds of raw materials in ball mill ball milling 8 ~
12h post-drying obtains described ceramic powder.
2. micro-strip ceramic antenna according to claim 1 preparation method it is characterised in that：Described 0.93
(Mg0.97Zn0.03)TiO3-0.07CaTiO3] prepare as follows：According to chemical formula 0.93 (Mg0.97Zn0.03)TiO3-
0.07CaTiO3Weigh zinc oxide, magnesium hydroxide, titanium oxide and calcium carbonate, the raw material weighing is added in ball grinder with anhydrous second
Alcohol carries out wet ball grinding 8 ~ 12h for medium, then dries, and 1000 ~ 1200 DEG C of insulation 2 ~ 4h obtain.
3. micro-strip ceramic antenna according to claim 1 preparation method it is characterised in that：Described step 3）In, mixing
Mode is ball milling mixing, and Ball-milling Time is 4 ~ 8h, and the amount of zirconium ball is 1 ~ 2 times of slurry total amount.
4. micro-strip ceramic antenna according to claim 1 preparation method it is characterised in that：Described step 5）In, dumping
Sintering concrete grammar be：The heating rate of room temperature ~ 600 DEG C is less than 2 DEG C/min, is incubated 1 ~ 2h at 600 DEG C, 600 ~ 1400 DEG C
Heating rate is less than 5 DEG C/min, is incubated 1 ~ 6h at 1300 ~ 1400 DEG C, is down to room temperature with the speed less than 5 DEG C/min.
5. micro-strip ceramic antenna according to claim 1 preparation method it is characterised in that：Described step 6）In, silver paste
Metallized concrete grammar is：After the silver paste of ceramic ceramics upper and lower surface brush 10 ~ 30 μ m-thick 800 ~ 850 DEG C be incubated 10 ~
20min.
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| CN114262214A (en) * | 2022-01-17 | 2022-04-01 | 铜陵华兴精细化工有限公司 | High-weather-resistance ceramic diaphragm pipe and preparation method thereof |
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| CN102623798A (en) * | 2012-04-13 | 2012-08-01 | 电子科技大学 | Multilayer ceramic antenna and preparation method thereof |
| CN202585727U (en) * | 2012-04-13 | 2012-12-05 | 电子科技大学 | Multilayer ceramic antenna |
| US8779988B2 (en) * | 2011-01-18 | 2014-07-15 | Cirocomm Technology Corp. | Surface mount device multiple-band antenna module |
| CN103936401A (en) * | 2013-11-25 | 2014-07-23 | 云南银峰新材料有限公司 | Method for preparing low-dielectric-constant microwave dielectric ceramic material |
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2014
- 2014-10-16 CN CN201410548743.2A patent/CN104319469B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8779988B2 (en) * | 2011-01-18 | 2014-07-15 | Cirocomm Technology Corp. | Surface mount device multiple-band antenna module |
| CN102623798A (en) * | 2012-04-13 | 2012-08-01 | 电子科技大学 | Multilayer ceramic antenna and preparation method thereof |
| CN202585727U (en) * | 2012-04-13 | 2012-12-05 | 电子科技大学 | Multilayer ceramic antenna |
| CN103936401A (en) * | 2013-11-25 | 2014-07-23 | 云南银峰新材料有限公司 | Method for preparing low-dielectric-constant microwave dielectric ceramic material |
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