CN102701719A - Forsterite ceramic material as well as preparation method and application thereof - Google Patents
Forsterite ceramic material as well as preparation method and application thereof Download PDFInfo
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- CN102701719A CN102701719A CN2012101970947A CN201210197094A CN102701719A CN 102701719 A CN102701719 A CN 102701719A CN 2012101970947 A CN2012101970947 A CN 2012101970947A CN 201210197094 A CN201210197094 A CN 201210197094A CN 102701719 A CN102701719 A CN 102701719A
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Abstract
The invention relates to a special ceramic material and a preparation method thereof, particularly to a forsterite ceramic material and a preparation method thereof. A forsterite ceramic body of the forsterite ceramic material comprises the following components by weight: 65-80 of forsterite powder, 10-20 of talcum powder, 1-3 of sintering additive, 12-18 of organic additive and 0.3-0.8 of surfactant, wherein the talcum powder is raw or cooked talcum powder. Compared with the conventional ceramic manufacturing technology (aluminum oxide and steatite ceramics), the forsterite ceramic material has the benefits of high heat conductivity, good heat radiation effect, low production cost, short production cycle and light weight, can be subjected to batch production and is suitable for high-power and low-power LED lamp housings.
Description
Technical field
The present invention relates to a kind of special ceramic material and preparation method, relate in particular to a kind of forsterite ceramics material and preparation method thereof with high heat conductance.
Background technology
Stupalith is a kind of heat sink material that rose in these 2 years as LED light fixture heat-dissipating casing, and the pottery as the LED lamp outer casing is mainly alumina-ceramic and steatite ceramic in the market, and stupalith can effectively solve heat dissipation problem and the Insulation Problems of LED.
Alumina ceramic material density is high, expensive raw materials, and firing temperature is that firing period is long, not can manufacture more than 1600 degree, though thermal conductivity is high, manufacturing cost is too high, product is too heavy.
The steatite ceramic thermal conductivity is low, though cost of manufacture is low, can manufacture, and thermal conductivity is too low, and it is not good enough to dispel the heat, and can only make lower powered LED light fixture.
Summary of the invention
It is expensive to the objective of the invention is to overcome existing alumina-ceramic, low production capacity, the lower thermal conductivity of steatite ceramic, the shortcoming that radiation coefficient is low; And a kind of high heat conductance is provided, high radiation coefficient, low cost, forsterite ceramics material and the manufacture craft that can manufacture; The present invention adopts raw materials such as forsterite and talcum powder through processing treatment, again through hot pressing or dry pressuring forming process, behind high-temperature firing, is prepared into high heat conductance, high heat radiation; Special ceramic material is applicable to superpower and lower powered LED light fixture cheaply, comprises lamp holder, led support; Substrate or COB substrate are widely used in commercial lighting, fields such as interior lighting.
It is following that the present invention solves concrete technical scheme of the present invention:
A kind of forsterite ceramics material; The prescription of said forsterite ceramics base substrate is calculated as with composition by weight: make a living talcum or burn talcum powder of forsterite powder 65-80, talcum powder 10-20, sintering aid 1-3, organic additive 12-18, tensio-active agent 0.3-0.8, said talcum powder.
Said sintering aid is quartz or lime carbonate or barium carbonate or Feldspar Powder.
Said organic additive is paraffin or beeswax or Triple Pressed Stearic Acid.
Said tensio-active agent is an oleic acid.
The method of making said forsterite ceramics comprises starting material manufacturing process steps, moulding process step and firing process step:
One, raw material manufacturing process steps:
The first step; Component is calculated as by weight: forsterite powder 65-80 talcum powder 10-20 sintering aid 1-3; Component is joined the back in ball mill ball milling 8-12 hour, treat fineness D50=2-6 micron after, the powder mix that ball milling is good advances high temperature kiln calcining 1280 degree-1350 degree and draws pre-burning and burn piece.
Second step, dry powder ball milling: the prefabricated burning piece that the above-mentioned the first step is processed was gone into the ball mill ball milling 15-24 hour once more, treat after fineness reaches the D50=1-4 micron powder to be emitted ball mill, cross 80 mesh sieves and prepare required powder.
The 3rd step, the weight percent of the prepared powder that goes out of second step by total amount to be calculated, organic additive 12-18 tensio-active agent 0.3-0.8 stirs in stirrer and prepared needed gatch raw material in 1-3 hour in the component
Two, moulding process step:
Earlier the gatch raw material for preparing is put into stirrer; Stir the wax slurry to be poured in shaper or the automatic molder after 1-3 hour again and suppress, material cylinder temperature is the 50-80 degree, and the discharge port temperature is the 60-80 degree; Dwell time is 3-5 second, and to process be the base substrate of desired shape in the demoulding then
Three, firing process step:
The first step is put into specified saggar with the base substrate of forming, in saggar, pours 80-160 purpose aluminum oxide fecula again into, makes the complete product wrapping of its aluminum oxide powder.
In second step, the binder removal operation: the saggar that will install product is put into warm kiln, and maximum sintering temperature is the 900-1100 degree, and firing period is 5-7 days.
The 3rd step, accomplish binder removal after, put on the specified load bearing board after clean the aluminum oxide powder of product surface is clear, connect load bearing board again and get into the high temperature klining together, firing temperature is: 1310-1360 degree, firing period are 10-15 hour.
Compare with existing ceramic fabrication technique (aluminum oxide and steatite ceramic), the present invention has following unusual effect: thermal conductivity is high, good heat dissipation effect, and cost of manufacture is low, and is with short production cycle, can manufacture, and light weight is applicable to superpower and lower powered LED lamp outer casing.
Embodiment
Through embodiment the present invention is done further to set forth in detail below.
Embodiment 1:
The composition by weight of forsterite ceramics base substrate is: forsterite powder 75, talcum powder (burning talcum powder) 9, sintering aid (silica powder) 2, organic additive (paraffin) 13.5, tensio-active agent (oleic acid) 0.5.The method of manufacture of above-mentioned forsterite ceramics material:
One, raw material manufacturing process steps:
The first step; Composition by weight is calculated as: forsterite powder 75, talcum powder (burning talcum powder) 9, sintering aid (silica powder) 2; Ball milling is 12 hours in ball mill, treat fineness D50=5.5 micron after, the powder mix that ball milling is good advances high temperature kiln calcining 1320 degree and draws pre-burning and burn piece.
Second step, dry powder ball milling: the burning piece that the above-mentioned the first step is processed was gone into the ball mill ball milling 24 hours once more, treat after fineness reaches the D50=2.8 micron powder to be emitted ball mill, cross 80 mesh screen residues and prepare required powder.
The 3rd step, the weight percent of the prepared powder that goes out of second step by total amount calculated, organic additive in the component (paraffin) 13.5 tensio-active agents (oleic acid) 0.5 stir in quick mixer prepared needed gatch raw material in 2 hours.
Two,The moulding process step:
Earlier the gatch raw material for preparing is put into slow stirrer; Stir the wax slurry to be poured in shaper or the automatic molder after 1 hour again and suppress, material cylinder temperature is 60 degree, and the discharge port temperature is 65 degree; Dwell time is 3 seconds, and finally demould is processed the base substrate of desired shape.
Three, firing process step:
The first step is put into specified saggar with the base substrate of forming, in saggar, pours 80 purpose aluminum oxide fecula again into, makes the complete product wrapping of its aluminum oxide powder.
In second step, the binder removal operation: the saggar that will install product is put into warm kiln, and maximum sintering temperature is 1020 degree, and firing period is 6 days.
The 3rd step, accomplish binder removal after, put on the specified load bearing board after clean the aluminum oxide powder of product surface is clear, connect load bearing board again and get into the high temperature klining together, firing temperature is: 1355 degree, firing period is 15 hours.
At last, product is tested, packed.
Embodiment 2:
The composition by weight of forsterite ceramics base substrate is: forsterite powder 73, talcum powder (giving birth to talcum powder) 12, sintering aid (lime carbonate) 2.7, organic additive (paraffin) 12, tensio-active agent (oleic acid) 0.3.
The method of manufacture of above-mentioned forsterite ceramics material:
One, raw material manufacturing process steps:
The first step; Component is calculated as by weight: forsterite powder 73, talcum powder (giving birth to talcum powder) 12, sintering aid (lime carbonate) 2.7; Ball milling is 10 hours in ball mill, treat fineness D50=5 micron after, the powder mix that ball milling is good advances high temperature kiln calcining 1280 degree and draws pre-burning and burn piece.
Second step, dry powder ball milling: the burning piece that the above-mentioned the first step is processed was gone into the ball mill ball milling 24 hours once more, treat after fineness reaches the D50=2.8 micron powder to be emitted ball mill, cross 80 mesh sieves and prepare required powder.
The 3rd step, the weight percent of the prepared powder that goes out of second step by total amount calculated, organic additive in the component (paraffin) 12 tensio-active agents (oleic acid) 0.3 stir in quick mixer prepared needed gatch raw material in 2 hours.
Two, moulding process step:
Earlier the gatch raw material for preparing is put into slow stirrer; Stir the wax slurry to be poured in shaper or the automatic molder after 1 hour again and suppress, material cylinder temperature is 60 degree, and the discharge port temperature is 65 degree; Dwell time is 3 seconds, and finally demould is processed the base substrate of desired shape.
Three, firing process step:
The first step is put into specified saggar with the base substrate of forming, in saggar, pours 80 purpose aluminum oxide fecula again into, makes the complete product wrapping of its aluminum oxide powder.
In second step, the binder removal operation: the saggar that will install product is put into warm kiln, and maximum sintering temperature is 980 degree, and firing period is 6 days.
The 3rd step, accomplish binder removal after, put on the specified load bearing board after clean the aluminum oxide powder of product surface is clear, connect load bearing board again and get into the high temperature klining together, firing temperature is: 1310 degree, firing period is 15 hours.
At last, product is tested, packed.
Claims (7)
1. forsterite ceramics material, it is characterized in that: the composition by weight of said forsterite ceramics material is: forsterite powder 65-80, talcum powder 10-20, sintering aid 1-3, organic additive 12-18, tensio-active agent 0.3-0.8.
2. the described forsterite ceramics material of claim 1 is characterized in that: make a living talcum powder or burn talcum powder of said talcum powder.
3. the described forsterite ceramics material of claim 1, it is characterized in that: said sintering aid is quartz or lime carbonate or barium carbonate or Feldspar Powder.
4. the described forsterite ceramics material of claim 1, it is characterized in that: said organic additive is paraffin or beeswax or Triple Pressed Stearic Acid.
5. the described forsterite ceramics material of claim 1, it is characterized in that: said tensio-active agent is an oleic acid.
6. the making method of the described forsterite ceramics material of claim 1-5, it is characterized in that: this method comprises starting material manufacturing process steps, moulding process step and firing process step:
One, raw material manufacturing process steps
The first step; Component is calculated as by weight: forsterite powder 75-90, talcum powder 10-20, sintering aid 1-3; In ball mill ball milling 8-12 hour, treat fineness D50=2-6 micron after, the powder mix that ball milling is good advances high temperature kiln calcining 1280 degree-1350 degree and draws pre-burning and burn piece;
Second step, dry powder ball milling: the burning piece that the above-mentioned the first step is processed was gone into the ball mill ball milling 15-24 hour once more, treat after fineness reaches the D50=1-4 micron powder to be emitted ball mill, cross 80 mesh sieves and prepare required powder;
The 3rd step, with the prepared powder that goes out of second step by weight component calculate, organic additive 12-18, tensio-active agent 0.3-0.8 in the component stir in stirrer and prepared needed gatch raw material in 1-3 hour;
Two, moulding process step
Earlier the gatch raw material for preparing is put into stirrer; Stir the wax slurry to be poured in shaper or the automatic molder after 1-3 hour again and suppress, material cylinder temperature is the 50-80 degree, and the discharge port temperature is the 60-80 degree; Dwell time is 3-5 second, and finally demould is processed the base substrate of desired shape;
Three, firing process step
The first step is put into specified saggar with the base substrate of forming, in saggar, pours 80-160 purpose aluminum oxide fecula again into, makes the complete product wrapping of its aluminum oxide powder;
In second step, the binder removal operation: the saggar that will install product is put into warm kiln, and maximum sintering temperature is the 900-1100 degree, and firing period is 5-7 days;
Second step, accomplish binder removal after, put on the specified load bearing board after clean the aluminum oxide powder of product surface is clear, connect load bearing board again and get into the high temperature klining together, firing temperature is: 1310-1360 degree, firing period are 10-15 hour.
7. the application of the described forsterite ceramics material of claim 1 is characterized in that: the forsterite ceramics material is as LED light fixture heat-dissipating casing.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103044043A (en) * | 2013-01-17 | 2013-04-17 | 武汉科技大学 | Compact forsterite fire-resistant raw material and preparation method thereof |
| CN103253490A (en) * | 2013-04-26 | 2013-08-21 | 湖北红花高温材料有限公司 | Ceramic supporting wheel made of forsterite and preparation method thereof |
| CN104177071A (en) * | 2013-05-22 | 2014-12-03 | 西峡宏泰镁橄榄石有限公司 | Forsterite saggar and preparation method |
| CN104370538A (en) * | 2014-04-12 | 2015-02-25 | 王宅文 | Forsterite LED(light-emitting diode) lamp ceramic heat-radiating casing and preparation method thereof |
| CN104803658A (en) * | 2015-04-27 | 2015-07-29 | 苏州统明机械有限公司 | Corrosion resistant ceramic and preparation method thereof |
| CN107235737A (en) * | 2017-06-30 | 2017-10-10 | 长兴泓矿炉料有限公司 | A kind of forsterite fireproof coating and preparation method thereof |
| CN107602067A (en) * | 2017-09-26 | 2018-01-19 | 湖南湘讯企业管理有限公司 | A kind of wear-resistant special cermacis and preparation method thereof |
| CN107658375A (en) * | 2017-08-21 | 2018-02-02 | 山东鼎拓电子科技有限公司 | A kind of basalt LED support production technology and structure |
| CN107879735A (en) * | 2017-12-05 | 2018-04-06 | 河南工程学院 | A kind of preparation method of high temperature low-expansion coefficient forsterite spodumene composite ceramic material |
| CN109534805A (en) * | 2018-10-16 | 2019-03-29 | 无锡顺佳特种陶瓷有限公司 | Lithium battery powder sintering forsterite-corundum sagger and preparation method thereof |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103044043A (en) * | 2013-01-17 | 2013-04-17 | 武汉科技大学 | Compact forsterite fire-resistant raw material and preparation method thereof |
| CN103253490B (en) * | 2013-04-26 | 2015-11-18 | 湖北红花高温材料有限公司 | A kind of take forsterite as ceramic support roller of raw material and preparation method thereof |
| CN103253490A (en) * | 2013-04-26 | 2013-08-21 | 湖北红花高温材料有限公司 | Ceramic supporting wheel made of forsterite and preparation method thereof |
| CN104177071A (en) * | 2013-05-22 | 2014-12-03 | 西峡宏泰镁橄榄石有限公司 | Forsterite saggar and preparation method |
| CN104177071B (en) * | 2013-05-22 | 2016-01-06 | 西峡宏泰镁橄榄石有限公司 | White olivine saggar and preparation method thereof |
| CN104370538A (en) * | 2014-04-12 | 2015-02-25 | 王宅文 | Forsterite LED(light-emitting diode) lamp ceramic heat-radiating casing and preparation method thereof |
| CN104803658A (en) * | 2015-04-27 | 2015-07-29 | 苏州统明机械有限公司 | Corrosion resistant ceramic and preparation method thereof |
| CN107235737A (en) * | 2017-06-30 | 2017-10-10 | 长兴泓矿炉料有限公司 | A kind of forsterite fireproof coating and preparation method thereof |
| CN107658375A (en) * | 2017-08-21 | 2018-02-02 | 山东鼎拓电子科技有限公司 | A kind of basalt LED support production technology and structure |
| CN107658375B (en) * | 2017-08-21 | 2022-04-22 | 山东鼎拓电子科技有限公司 | Production process and structure of basalt LED bracket |
| CN107602067A (en) * | 2017-09-26 | 2018-01-19 | 湖南湘讯企业管理有限公司 | A kind of wear-resistant special cermacis and preparation method thereof |
| CN107879735A (en) * | 2017-12-05 | 2018-04-06 | 河南工程学院 | A kind of preparation method of high temperature low-expansion coefficient forsterite spodumene composite ceramic material |
| CN107879735B (en) * | 2017-12-05 | 2021-06-25 | 河南工程学院 | Preparation method of medium-high temperature low-expansion coefficient forsterite-spodumene composite ceramic material |
| CN109534805A (en) * | 2018-10-16 | 2019-03-29 | 无锡顺佳特种陶瓷有限公司 | Lithium battery powder sintering forsterite-corundum sagger and preparation method thereof |
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Application publication date: 20121003 |