CN102557693A - Composite material for preparing crucible and application of composite material - Google Patents
Composite material for preparing crucible and application of composite material Download PDFInfo
- Publication number
- CN102557693A CN102557693A CN2012100563746A CN201210056374A CN102557693A CN 102557693 A CN102557693 A CN 102557693A CN 2012100563746 A CN2012100563746 A CN 2012100563746A CN 201210056374 A CN201210056374 A CN 201210056374A CN 102557693 A CN102557693 A CN 102557693A
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- CN
- China
- Prior art keywords
- crucible
- matrix material
- quartz
- composite material
- organic dispersing
- 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.)
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Links
- 239000002131 composite material Substances 0.000 title abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000010453 quartz Substances 0.000 claims abstract description 18
- 239000002270 dispersing agent Substances 0.000 claims abstract description 13
- 239000000375 suspending agent Substances 0.000 claims abstract description 13
- 239000002086 nanomaterial Substances 0.000 claims abstract description 10
- 239000011159 matrix material Substances 0.000 claims description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 24
- 239000002041 carbon nanotube Substances 0.000 claims description 24
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 239000004576 sand Substances 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 5
- 229920002401 polyacrylamide Polymers 0.000 claims description 5
- 230000007547 defect Effects 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 description 24
- 239000002002 slurry Substances 0.000 description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 10
- 229910052710 silicon Inorganic materials 0.000 description 10
- 239000010703 silicon Substances 0.000 description 10
- 239000002210 silicon-based material Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000010257 thawing Methods 0.000 description 7
- 239000012467 final product Substances 0.000 description 6
- 239000013078 crystal Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000005350 fused silica glass Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
Landscapes
- Glass Melting And Manufacturing (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Silicon Compounds (AREA)
Abstract
The invention provides a composite material for preparing a crucible. The composite material for preparing the crucible comprises quartz, an organic dispersing agent, a suspending agent and a nano material, wherein the mass percentage content of the quartz, the organic dispersing agent and the suspending agent is 90 to 99.9 percent; the mass ratio of the quartz to the organic dispersing agent to the suspending agent is (25-100):1:1; and the mass percentage content of the nano material is 0.1 to 10 percent. The invention also provides an application of the composite material. The crucible prepared by the composite material overcomes the defects of the traditional crucibles and has a good market application prospect.
Description
Technical field
The present invention relates to a kind of matrix material, particularly a kind of matrix material of spare-crucible.
Background technology
In the photovoltaic generation industry, along with the continuous development of crystal silicon solar photovoltaic industry, maturation, whole cost constantly reduces, and the silicon chip price of industrial chain upper end in the falling of the rational faculty, has also caused the continuous compression of silicon substrate manufacturer profit margin simultaneously gradually.Improve the substrate quality, cutting down finished cost becomes the problem of pendulum in face of all solar silicon wafers manufacturers, is solidified because cost is low, and output is big by the polycrystalline typing that heat-exchanging method grows up, and has become the mainstream technology that silicon chip is produced.As its name suggests, in the directional freeze process of polycrystalline ingot casting, silicon melt is melted quartz crucible and loads, and after crystal growth began, heat was derived from crucible bottom, formed vertical thermograde, thereby the directional freeze of melt begins from the bottom up.Yet quartz crucible is the poor conductor of heat, and because of quartz crucible be that to cause the density pattern be not uniformity to injection forming; Therefore, the thermal properties of crucible bottom and sidepiece can't accurately be controlled, and in most cases the thermal conductive property of crucible bottom and sidepiece is because thickness is approaching; Its thermal conductive property is approaching basically, and it solidifies the inside edge that at first occurs in crucible in the long brilliant primary stage, becomes the growth of certain inclined-plane to inside then; Forming an interface that is similar to W, is not directional freeze truly.
In order to realize that vertical orientation solidifies to the full extent, need the bottom of crucible and sidepiece to have different thermal conductivities, promptly require the crucible bottom thermal conductivity greater than its sidepiece thermal conductivity specifically, thereby make that the hot-fluid that produces in the crystal growing process can vertical conduction.Appolon solar has designed a kind of novel crucible structure, and it is very big different to make that its bottom and sidepiece thermal conductivity have, and is made up of transparent crystal quartz glass bottom it, and its sidepiece then adopts normal nontransparent fused quartz.Although this scheme has reached design effect, it adopts two kinds of different quartz materials, has increased the crucible production cost, and has reduced the success ratio of producing.
Therefore, need the searching additive method badly, guaranteeing that crucible produces on the basis of power, improve the thermal conductivity of crucible.
Summary of the invention
In order to address the above problem, the invention provides a kind of matrix material of new spare-crucible.
At first; The invention provides a kind of matrix material of spare-crucible; It comprises quartz, organic dispersing agent, suspension agent and nano material; The quality percentage composition of quartz, organic dispersing agent and suspension agent is 10～99.9%, and the mass ratio of quartz, organic dispersing agent and suspension agent is 25～100: 1: 1, the quality percentage composition of nano material was 0.1～10%.
Wherein, described quartz is a glass sand.
Wherein, described organic dispersing agent is the polyacrylamide material.
Wherein, described suspension agent is a MO.
Wherein, described nano material is a carbon nanotube.
Wherein, the mass ratio of said quartz material, organic dispersing agent and suspension agent is 99: 1: 1.
Wherein, the quality percentage composition of nano material is 0.5%.
The present invention also provides the purposes of aforementioned matrix material in spare-crucible.
The invention provides the Composite Preparation quartz crucible can regulate its thermal conductivity; Both can improve heating efficiency; Can improve the radiating efficiency of crucible bottom again; Greatly improve the directional solidification effect of silicon melt, thereby improved the weight of silicon crystal growth, reduced the cost of crystalline silicon photovoltaic generating.
Obviously, according to foregoing of the present invention,,, can also make modification, replacement or the change of other various ways not breaking away under the above-mentioned basic fundamental thought of the present invention prerequisite according to the ordinary skill knowledge and the customary means of this area.
Below, foregoing of the present invention is remake further detailed description through the embodiment of embodiment form.But should this be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following instance.All technology that realizes based on foregoing of the present invention all belong to scope of the present invention.
Embodiment
Embodiment 1 usefulness Composite Preparation crucible provided by the invention
1, preparation method
(1) preparation of matrix material
Get glass sand (purity of silica sand is 99.99%), polyacrylamide material, MO; Mix at 25: 1: 1 with mass ratio, get quartzy slurry, add carbon nanotube again; Mixing; The weight percent 99.9% of quartzy slurry, the weight percent of carbon nanotube is 0.1%, promptly gets matrix material of the present invention.
(2) preparation of crucible
Secondary grouting: get the quartzy slurry and the matrix material of step (1) preparation, matrix material is injected mould in advance, fill up the crucible die bottom, the height that the quartzy slurry that reinjects, slurry are filled into crucible die to be needed gets final product.This kind grouting mode can realize that the thermal conductivity of crucible bottom is higher than the thermal conductivity of sidepiece.
Perhaps, once grouting: get the matrix material of step (1) preparation, matrix material is injected mould, the height that being filled into crucible die needs gets final product.
Embodiment 2 usefulness Composite Preparation crucible provided by the invention
1, preparation method
(1) preparation of matrix material
Get glass sand (purity of silica sand is 99.99%), polyacrylamide material, MO; Mix at 99: 1: 1 with mass ratio, get quartzy slurry, add carbon nanotube again; Mixing; The weight percent 99.5% of quartzy slurry, the weight percent of carbon nanotube is 0.5%, promptly gets matrix material of the present invention.
(2) preparation of crucible
Secondary grouting: get the quartzy slurry and the matrix material of step (1) preparation, matrix material is injected mould in advance, fill up the crucible die bottom, the height that the quartzy slurry that reinjects, slurry are filled into crucible die to be needed gets final product.This kind grouting mode can realize that the thermal conductivity of crucible bottom is higher than the thermal conductivity of sidepiece.
Perhaps, once grouting: get the matrix material of step (1) preparation, matrix material is injected mould, the height that being filled into crucible die needs gets final product.
Embodiment 3 usefulness Composite Preparation crucible provided by the invention
1, preparation method
(1) preparation of matrix material
Get glass sand (purity of silica sand is 99.99%), polyacrylamide material, MO; Mix at 100: 1: 1 with mass ratio, get quartzy slurry, add carbon nanotube again; Mixing; The weight percent 90% of quartzy slurry, the weight percent of carbon nanotube is 10%, promptly gets matrix material of the present invention.
(2) preparation of crucible
Secondary grouting: get the quartzy slurry and the matrix material of step (1) preparation, matrix material is injected mould in advance, fill up the crucible die bottom, the height that the quartzy slurry that reinjects, slurry are filled into crucible die to be needed gets final product.This kind grouting mode can realize that the thermal conductivity of crucible bottom is higher than the thermal conductivity of sidepiece.
Perhaps, once grouting: get the matrix material of step (1) preparation, matrix material is injected mould, the height that being filled into crucible die needs gets final product.
After using the crucible moulding of Composite Preparation of the present invention; Its thermal conductivity can be greatly improved; In the polycrystalline silicon ingot casting process, can shorten the thawing time of polysilicon greatly, can also realize that with the crucible that the secondary grouting mode prepares the vertical orientation of silicon ingot solidifies.
In order to further specify beneficial effect of the present invention, following experiment is provided at present:
Crucible thickness is generally 880 * 880 millimeters; Highly be the 420-480 millimeter, under so big size, be difficult to carry out the measurement of thermal conductivity, but the thermal conductivity of crucible be different; Be equipped with under the situation of identical silicon material; It is also different that the silicon material melts the required time fully, therefore, can melt the thermal conductivity of speed and whole technology required times judgement crucibles according to the silicon material.
1, experimental technique
(1) gets the not matrix material of quartzy slurry, embodiment 1 and embodiment 2 preparations of carbon nanotubes, the crucible of preparation same model;
(2) the silicon material of adding identical weight in three kinds of crucibles of step (1) preparation early, heating power is identical, detects the thawing time of silicon material.
2, experimental result
Detected result is as shown in table 1:
The thermal conductivity detected result of the different crucibles of table 1
Can find out that by table 1 add group two, the group three of carbon nanotube and organize four and compare with the group that does not add carbon nanotube one, the silicon material thawing time is with all the process times obviously shorten; When content of carbon nanotubes 10% when following, the silicon material thawing time shortened along with the increase of content of carbon nanotubes with whole process times, wherein; Content of carbon nanotubes is 0.1% and 0.5% o'clock; The silicon material thawing time is with all process time shortening amplitude is remarkable, but when the content of carbon nanotube increased to 10%, it is not obvious that silicon material thawing time and whole process times shorten amplitude; Particularly content of carbon nanotubes increases at 30% o'clock, and crucible can't moulding.
The experiment proof; In the matrix material of the present invention; When content of carbon nanotubes 10% when following, thermal conductivity improves with the increase of content of carbon nanotubes, but its change with content of carbon nanotubes be not linear; When content of carbon nanotubes near or when reaching 10%, thermal conductivity and content of carbon nanotubes are suitable 0.5% o'clock thermal conductivity.When content of carbon nanotubes surpasses 10%, reach at 30% o'clock, crucible promptly can't moulding.
In practical application, because of the carbon nanotube price is high, take into account the thermal conductivity and the production cost of crucible, the content of carbon nanotube is preferably 0.5% in the matrix material of the present invention.
To sum up; Matrix material provided by the invention can improve the thermal conductivity of crucible; Crucible so that the secondary grouting mode prepares can also realize that the vertical orientation of silicon ingot solidifies; The crucible of Composite Preparation of the present invention is used for the thawing time that polycrystalline silicon ingot casting can shorten polysilicon greatly, reduces production costs significantly, have favorable industrial application prospect.
Claims (8)
1. the matrix material of a spare-crucible; It is characterized in that: it comprises quartz, organic dispersing agent, suspension agent and nano material; The quality percentage composition of quartz, organic dispersing agent and suspension agent is 10～99.9%; The mass ratio of quartz, organic dispersing agent and suspension agent is 25～100: 1: 1, the quality percentage composition of nano material was 0.1～10%.
2. matrix material according to claim 1 is characterized in that: described quartz is a glass sand.
3. matrix material according to claim 1 is characterized in that: described organic dispersing agent is the polyacrylamide material.
4. matrix material according to claim 1 is characterized in that: described suspension agent is a MO.
5. matrix material according to claim 1 is characterized in that: described nano material is a carbon nanotube.
6. matrix material according to claim 1 is characterized in that: the mass ratio of said quartz material, organic dispersing agent and suspension agent is 99: 1: 1.
7. matrix material according to claim 1 is characterized in that: the quality percentage composition of nano material is 0.5%.
8. the purposes of any said matrix material of claim 1-7 in spare-crucible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210056374 CN102557693B (en) | 2012-03-06 | 2012-03-06 | Composite material for preparing crucible and application of composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210056374 CN102557693B (en) | 2012-03-06 | 2012-03-06 | Composite material for preparing crucible and application of composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102557693A true CN102557693A (en) | 2012-07-11 |
| CN102557693B CN102557693B (en) | 2013-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210056374 Expired - Fee Related CN102557693B (en) | 2012-03-06 | 2012-03-06 | Composite material for preparing crucible and application of composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102557693B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105088340A (en) * | 2015-09-06 | 2015-11-25 | 江苏协鑫硅材料科技发展有限公司 | Crucible and preparation method thereof |
| CN106966711A (en) * | 2016-01-14 | 2017-07-21 | 杭州晶鑫科技有限公司 | A kind of method for improving quartz sand slurry suspension |
| CN107986769A (en) * | 2017-12-13 | 2018-05-04 | 苏州浩焱精密模具有限公司 | A kind of preparation method of quartz pincers pot mould |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020166341A1 (en) * | 1994-11-15 | 2002-11-14 | Shelley Robert D. | Technique for quartz crucible fabrication having reduced bubble content in the wall |
| CN1522230A (en) * | 2001-03-08 | 2004-08-18 | 赫罗伊斯石英玻璃股份有限两合公司 | Method of producing a quartz glass crucible |
| CN1789204A (en) * | 2004-12-17 | 2006-06-21 | 德国贝格有限公司 | Herbst bremer goldschlaegerei |
-
2012
- 2012-03-06 CN CN 201210056374 patent/CN102557693B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020166341A1 (en) * | 1994-11-15 | 2002-11-14 | Shelley Robert D. | Technique for quartz crucible fabrication having reduced bubble content in the wall |
| CN1522230A (en) * | 2001-03-08 | 2004-08-18 | 赫罗伊斯石英玻璃股份有限两合公司 | Method of producing a quartz glass crucible |
| CN1789204A (en) * | 2004-12-17 | 2006-06-21 | 德国贝格有限公司 | Herbst bremer goldschlaegerei |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105088340A (en) * | 2015-09-06 | 2015-11-25 | 江苏协鑫硅材料科技发展有限公司 | Crucible and preparation method thereof |
| CN106966711A (en) * | 2016-01-14 | 2017-07-21 | 杭州晶鑫科技有限公司 | A kind of method for improving quartz sand slurry suspension |
| CN107986769A (en) * | 2017-12-13 | 2018-05-04 | 苏州浩焱精密模具有限公司 | A kind of preparation method of quartz pincers pot mould |
| CN107986769B (en) * | 2017-12-13 | 2021-06-15 | 苏州浩焱精密模具有限公司 | Preparation method of quartz crucible mold |
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| Publication number | Publication date |
|---|---|
| CN102557693B (en) | 2013-10-09 |
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Free format text: FORMER OWNER: LV TIEZHENG Effective date: 20130222 Owner name: JIANGSU UONONE OPTOELECTRONICS TECHNOLOGY CO., LTD Free format text: FORMER OWNER: NI DAOHONG Effective date: 20130222 |
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Effective date of registration: 20130222 Address after: 212132, Dagang Road, Dagang, Jiangsu, Zhenjiang, 7 Applicant after: Jiangsu Uonone Optoelectronics Technology Co., Ltd. Address before: 210000 Gulou District, Jiangsu, Nanjing new model road, No. 38 Applicant before: Ni Daohong Applicant before: Lv Tiezheng |
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