CN102757216B - Aluminum oxide ceramic coupler and method for preparing same - Google Patents
Aluminum oxide ceramic coupler and method for preparing same Download PDFInfo
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- CN102757216B CN102757216B CN201210257324.4A CN201210257324A CN102757216B CN 102757216 B CN102757216 B CN 102757216B CN 201210257324 A CN201210257324 A CN 201210257324A CN 102757216 B CN102757216 B CN 102757216B
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Abstract
The invention discloses an aluminum oxide ceramic coupler and a method for preparing the same. The aluminum oxide ceramic coupler is composed of the following components by weight percent: 23-30% of weathered feldspar, 3-8% of potassium feldspar, 10-15% of boundary tablet soil, 5-12% of quartz, 8-15% of corundum, 2-8% of aluminum powder, 2-5% of level A bentonite, 12-20% of 325-mesh longyan particles, and 8-15% of clay. The method for preparing the aluminum oxide ceramic coupler comprises the following steps of: adding the powder prepared according to the proportions abovementioned to water and thoroughly grinding the mixture in a weight ratio of powder to water of 7: 3; adding in a dispersant and mixing the materials evenly, and pouring the mixture into a plaster mold after thorough exhausting; putting the mold into a kiln by a burying sintering method, wherein the sintering temperature is controlled in a range of 1400-1500 DEG C, the sintering time is about 10 hours and the sintering atmosphere is reducing flame; and finally, obtaining the aluminum oxide ceramic coupler.
Description
Technical field
The invention belongs to electrodeless lamp coupler field, be specifically related to a kind of alumina-ceramic coupling mechanism and preparation method thereof.。
Background technology
Non-polarized lamp is made up of radio-frequency generator, coupling mechanism and bulb three parts.It is to be coupled in lamp in the mode of induction by the electromagnetic field of radio-frequency generator, makes other avalanche ionizations in bulb, forms plasma body.Plasma-excited courtyard gives off ultraviolet ray while returning to ground state.The fluorescent material of bulb inner wall is subject to ultraviolet ray excited generation visible ray.Visible, the purposes of coupling mechanism is to bulb carry high frequency electromagnetic energy, reaches best laser propagation effect in order to reduce attenuation, and coupling mechanism will be realized coupling with high frequency electric source, need to use magneticsubstance, it is to coil with soft magnetic ferrite the electromagnetic transmission device of making.Magneticsubstance has a kind of special function: hertzian wave inside transmits, and its wavelength can shorten a lot.But magneticsubstance itself can produce loss, and the area of the hysteretic characteristic curve of this magnetic material has just represented the loss size of magnetic material.Electromagnetic frequency is higher, and the circuit that magnetic material moves back and forth along hysteretic characteristic curve is just longer, and magneticsubstance molecule is bought and sold back and forth faster by hertzian wave, and loss is just larger certainly.Larger loss must bring higher heat, and therefore high heat often appears in HF lamp without electrodes cavity intercoupler.In addition, traditional aluminium alloy or copper add the coupling mechanism of plastic sleeve structure, and plastic material is at high temperature prone to strain cracking and poor heat conductivity phenomenon.This series of problem all, by reducing the stability of photoluminescence of Non-polarized lamp, increases loss, shortens bulk life time.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of alumina-ceramic coupling mechanism using that mates with Non-polarized lamp is provided, described alumina-ceramic coupling mechanism has advantages of high heat conductance, high-insulativity, low-k, low-dielectric loss, high rigidity, erosion resistance, improve stability of photoluminescence, reduce the wastage, extend Non-polarized lamp bulk life time, can avoid plastic material to be at high temperature prone to the phenomenon of strain cracking and poor thermal conductivity, thereby ensure Non-polarized lamp job stability.
Another object of the present invention is to provide the preparation method of described alumina-ceramic coupling mechanism.
Above-mentioned purpose of the present invention is achieved by following technical solution:
A kind of alumina-ceramic coupling mechanism, it is characterized in that, formed by the component counting by weight percentage as follows: weathered feldspar 23%-30%, potassium felspar sand 3%-8%, Jiepai clay 10%-15%, quartz 5%-12%, corundum 8%-15%, aluminium powder 2%-8%, A level wilkinite 2%-5%, 325 order Longyan grains 12%-20%, clay 8%-15%.
In described material, contain the mineralizer compositions such as barium, strontium, calcium, magnesium silicate, can make at high temperature reductive firing of alumina-ceramic coupling bar, thereby the mechanical strength after raising Alumina Ceramics Sintering, make anti-gulf intensity can reach 274MPa, when making to there is better heat conductivility, can obtain again compared with intensity as metal.
The preparation method of described alumina-ceramic coupling mechanism, comprises the steps:
(1) powder of said ratio being made is added to the water, and fully grinds by the weight ratio of powder: water=7:3, obtains slurry;
(2) in above-mentioned slurry, add the dispersion agents such as the binding agents such as vinyl alcohol, methylcellulose gum, marine alga acid amide and polypropylene amine, Sudan Gum-arabic, mix;
(3) after the abundant exhaust of slurry, pour in plaster mould;
(4) plaster mould is entered to kiln with the method for burying burning, sintering temperature is controlled at 1430-1500 ℃, and sintering time is about 10 hours, and firing atmosphere is reducing flame, obtains described alumina-ceramic coupling mechanism.
When drain casting, in the time that die wall absorption slurry reaches 2-3mm, unnecessary slurry is poured out, can be reduced base substrate shrinkage.
After plaster mould sintering, cooling down 3-4 hour, makes the product burning till have time enough cooling, to reach best sintering effect.
In the slurry of alumina-ceramic coupling mechanism, add the dispersion agents such as the binding agents such as vinyl alcohol, methylcellulose gum, marine alga acid amide and polypropylene amine, Sudan Gum-arabic, make a slurry material surface form electrostatic double layer, slurry stable suspersion does not precipitate, and is applicable to injection forming operation.
Compared with prior art, the present invention has following beneficial effect:
1. alumina-ceramic coupling mechanism can effectively improve stability of photoluminescence, reduces the wastage, and extends Non-polarized lamp bulk life time;
2. can avoid occurring the phenomenon of strain cracking and poor thermal conductivity, ensure Non-polarized lamp job stability;
3. adopt and bury the double sintering technique of burning, enhance product performance: compact structure, physical strength are high, radiating effect and insulation effect good.
Embodiment
Below in conjunction with specific embodiment, the present invention is further explained, but embodiment is not limited in any way the present invention.
Embodiment 1
The component composition that the alumina-ceramic coupling mechanism of the present embodiment calculates as following weight percent: weathered feldspar 23%, potassium felspar sand 8%, Jiepai clay 10%, quartz 12%, corundum 15%, aluminium powder 2%, A level wilkinite 3%, 325 order Longyan grains 12%, clay 15%.
(1) powder of said ratio being made is added to the water, and fully grinds by the weight ratio of powder: water=7:3, obtains slurry;
(2) in above-mentioned slurry, add the dispersion agents such as the binding agents such as vinyl alcohol, methylcellulose gum, marine alga acid amide and polypropylene amine, Sudan Gum-arabic, mix;
(3) after the abundant exhaust of slurry, pour in plaster mould;
(4) plaster mould is entered to kiln with the method for burying burning, sintering temperature is controlled at 1430-1500 ℃, and sintering time is about 10 hours, and firing atmosphere is reducing flame, obtains described alumina-ceramic coupling mechanism.
Embodiment 2
The component composition that the alumina-ceramic coupling mechanism of the present embodiment calculates as following weight percent: weathered feldspar 28%, potassium felspar sand 5%, Jiepai clay 12%, quartz 8%, corundum 12%, aluminium powder 4%, A level wilkinite 3%, 325 order Longyan grains 15%, clay 13%.
(1) powder of said ratio being made is added to the water, and fully grinds by the weight ratio of powder: water=7:3, obtains slurry;
(2) in above-mentioned slurry, add the dispersion agents such as the binding agents such as vinyl alcohol, methylcellulose gum, marine alga acid amide and polypropylene amine, Sudan Gum-arabic, mix;
(3) after the abundant exhaust of slurry, pour in plaster mould;
(4) plaster mould is entered to kiln with the method for burying burning, sintering temperature is controlled at 1430-1500 ℃, and sintering time is about 10 hours, and firing atmosphere is reducing flame, obtains described alumina-ceramic coupling mechanism.
Embodiment 3
The component composition that the alumina-ceramic coupling mechanism of the present embodiment calculates as following weight percent: weathered feldspar 30%, potassium felspar sand 3%, Jiepai clay 15%, quartz 5%, corundum 8%, aluminium powder 8%, A level wilkinite 3%, 325 order Longyan grains 20%, clay 8%.
(1) powder of said ratio being made is added to the water, and fully grinds by the weight ratio of powder: water=7:3, obtains slurry;
(2) in above-mentioned slurry, add the dispersion agents such as the binding agents such as vinyl alcohol, methylcellulose gum, marine alga acid amide and polypropylene amine, Sudan Gum-arabic, mix;
(3) after the abundant exhaust of slurry, pour in plaster mould;
(4) plaster mould is entered to kiln with the method for burying burning, sintering temperature is controlled at 1430-1500 ℃, and sintering time is about 10 hours, and firing atmosphere is reducing flame, obtains described alumina-ceramic coupling mechanism.
According to embodiment gained alumina-ceramic coupling mechanism and traditional material coupler performance comparative benefits:
| Sequence number | Index | Alumina-ceramic coupling mechanism | Aluminium alloy coupling mechanism | Metallic copper core+plastic casing coupling mechanism |
| 1 | Body resistivity | ≥10 11Ωm | ≥10 -8Ωm | ≥10 -8Ωm |
| 2 | Resistance toheat | 800 ℃ indeformable | 500 ℃ indeformable | 100 ℃ indeformable (outer wrap plastics, non-refractory) |
Claims (3)
1. prepare the method for alumina-ceramic coupling mechanism for one kind, it is characterized in that, formed by the component counting by weight percentage as follows: weathered feldspar 23%-30%, potassium felspar sand 3%-8%, Jiepai clay 10%-15%, quartz 5%-12%, corundum 8%-15%, aluminium powder 2%-8%, A level wilkinite 2%-5%, 325 order Longyan grains 12%-20%, clay 8%-15%;
The preparation method of described alumina-ceramic coupling mechanism, comprises the steps:
(1) powder of said ratio being made is added to the water, and fully grinds by the weight ratio of powder: water=7:3, obtains slurry;
(2) in above-mentioned slurry, add vinyl alcohol, methylcellulose gum, marine alga acid amide binding agent and polypropylene amine, Sudan Gum-arabic dispersion agent, mix;
(3) after the abundant exhaust of slurry, pour in plaster mould;
(4) plaster mould is entered to kiln with the method for burying burning, sintering temperature is controlled at 1430-1500 ℃, and sintering time is 10 hours, and firing atmosphere is reducing flame, obtains described alumina-ceramic coupling mechanism.
2. the method for preparing alumina-ceramic coupling mechanism according to claim 1, is characterized in that, when drain casting, in the time that die wall absorption slurry reaches 2-3mm, unnecessary slurry is poured out.
3. the method for preparing alumina-ceramic coupling mechanism according to claim 1, is characterized in that, after plaster mould sintering, and cooling down 3-4 hour.
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| CN201210257324.4A CN102757216B (en) | 2012-07-24 | 2012-07-24 | Aluminum oxide ceramic coupler and method for preparing same |
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| CN201210257324.4A CN102757216B (en) | 2012-07-24 | 2012-07-24 | Aluminum oxide ceramic coupler and method for preparing same |
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| CN102757216B true CN102757216B (en) | 2014-05-21 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4122023A1 (en) * | 1991-07-03 | 1993-01-07 | Siemens Ag | HIGHLY TONER DEPORCELLANE |
| CN101224975A (en) * | 2008-01-24 | 2008-07-23 | 林伟河 | Thin-walled body strengthen porcelain and production technique thereof |
| CN101555126A (en) * | 2009-05-07 | 2009-10-14 | 潮州市新粤陶瓷制作有限公司 | Green domestic porcelain |
| CN101700972A (en) * | 2009-11-28 | 2010-05-05 | 江门市凌志餐厨用品有限公司 | High-strength corundum ceramics and preparation method thereof |
| CN101973758A (en) * | 2010-09-19 | 2011-02-16 | 广东四通集团有限公司 | High transmittance fine household porcelain and production technology thereof |
-
2012
- 2012-07-24 CN CN201210257324.4A patent/CN102757216B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4122023A1 (en) * | 1991-07-03 | 1993-01-07 | Siemens Ag | HIGHLY TONER DEPORCELLANE |
| CN101224975A (en) * | 2008-01-24 | 2008-07-23 | 林伟河 | Thin-walled body strengthen porcelain and production technique thereof |
| CN101555126A (en) * | 2009-05-07 | 2009-10-14 | 潮州市新粤陶瓷制作有限公司 | Green domestic porcelain |
| CN101700972A (en) * | 2009-11-28 | 2010-05-05 | 江门市凌志餐厨用品有限公司 | High-strength corundum ceramics and preparation method thereof |
| CN101973758A (en) * | 2010-09-19 | 2011-02-16 | 广东四通集团有限公司 | High transmittance fine household porcelain and production technology thereof |
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