CN105063757B - A kind of hypoxemia spraying method - Google Patents
A kind of hypoxemia spraying method Download PDFInfo
- Publication number
- CN105063757B CN105063757B CN201510597047.5A CN201510597047A CN105063757B CN 105063757 B CN105063757 B CN 105063757B CN 201510597047 A CN201510597047 A CN 201510597047A CN 105063757 B CN105063757 B CN 105063757B
- Authority
- CN
- China
- Prior art keywords
- coating
- hypoxemia
- spraying method
- viscose glue
- crucible
- 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.)
- Active
Links
Landscapes
- Coating By Spraying Or Casting (AREA)
- Ceramic Products (AREA)
Abstract
This application discloses a kind of hypoxemia spraying method, including：Using ceramic viscose glue and Ludox making adhesive, the weight of the ceramic viscose glue in described adhesive is more than the weight of the Ludox；Pure water and alpha-silicon nitride powders are mixed, add described adhesive, and be stirred, the coating prepared；Using purification of compressed air, the coating is sprayed to crucible internal walls.The above-mentioned hypoxemia spraying method that the application provides, due to making adhesive using ceramic viscose glue and Ludox, the weight of the ceramic viscose glue in described adhesive is more than the weight of the Ludox, therefore the oxygen content in sprayed coating can be reduced, to reduce the oxygen content in silicon ingot, strengthen the light decay effect of cell piece.
Description
Technical field
The present invention relates to field of photovoltaic technology, more particularly to a kind of hypoxemia spraying method.
Background technology
The competition of the competition of polysilicon technology, actually Ingot quality.In the manufacture of silicon ingot, hot spraying is a weight
The step of wanting.
Hot spraying technique is using silicon nitride, water, Ludox and ceramic binder at present.A kind of technique is：Will
1800ml pure water and 600g alpha-silicon nitride powders are well mixed, and while being stirred continuously, add 200ml Ludox and 5g ceramics are viscous
Mixture, it is stirred for several minutes, the silicon liquid coating prepared is sprayed with the compressed air of purification, spray gun pressure 20psi-
40psi, spray distance 25cm-30cm, positioning land crucible width are 15-20cm, and coating thickness is controlled in 0.01mm or so,
Crucible spraying temperature control is sintered again afterwards at 45-60 DEG C.
However, in above-mentioned hot spraying technique, because oxygen content is high in the silica of Ludox, therefore obtained spray
Coating oxygen content is high, and compactness is poor, and during follow-up ingot casting, the oxygen in the sprayed coating spreads into silicon ingot, causes silicon
Oxygen content is high in ingot, reduces the light decay effect of cell piece.
The content of the invention
To solve the above problems, the invention provides a kind of hypoxemia spraying method, the oxygen content in sprayed coating can be reduced,
To reduce the oxygen content in silicon ingot, strengthen the light decay effect of cell piece.
A kind of hypoxemia spraying method provided by the invention, including：
Using ceramic viscose glue and Ludox making adhesive, the weight of the ceramic viscose glue in described adhesive is more than the silicon
The weight of colloidal sol；
Pure water and alpha-silicon nitride powders are mixed, add described adhesive, and be stirred, the coating prepared；
Using purification of compressed air, the coating is sprayed to crucible internal walls.
Preferably, in above-mentioned hypoxemia spraying method, the ceramic viscose glue includes polyvinyl alcohol and polyurethane.
Preferably, in above-mentioned hypoxemia spraying method, ceramic viscose glue ratio shared in described adhesive is set
For 60% to 80%.
Preferably, it is described to mix pure water and alpha-silicon nitride powders in above-mentioned hypoxemia spraying method, add the bonding
Agent, and be stirred for：Alpha-silicon nitride powders described in pure water described in 1800ml and 700g are mixed, and add bonding described in 500ml
Agent, stir 20 minutes to 50 minutes.
Preferably, it is described to utilize purification of compressed air in above-mentioned hypoxemia spraying method, spray the painting to crucible internal walls
Expect be：Using the spray gun that pressure is 20psi to 40psi, apart from the position of the crucible internal walls 25cm to 30cm, to the earthenware
Coating described in crucible inner-wall spraying, and the width for positioning crucible described in land is 15cm to 20cm.
Preferably, in above-mentioned hypoxemia spraying method, the temperature range for controlling the spraying is 80 DEG C to 100 DEG C.
Preferably, in above-mentioned hypoxemia spraying method, the coating thickness scope for controlling the coating is 0.2mm to 0.5mm.
Preferably, in above-mentioned hypoxemia spraying method, also include after the coating to crucible internal walls spraying：It is right
The crucible is sintered.
Above-mentioned hypoxemia spraying method provided by the invention, it is described due to making adhesive using ceramic viscose glue and Ludox
The weight of ceramic viscose glue in adhesive is more than the weight of the Ludox, therefore can reduce the oxygen content in sprayed coating, with
The oxygen content in silicon ingot is reduced, strengthens the light decay effect of cell piece.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of schematic diagram for hypoxemia spraying method that the embodiment of the present application provides；
Fig. 2 is the schematic diagram for another hypoxemia spraying method that the embodiment of the present application provides.
Embodiment
The core concept of the present invention is to provide a kind of hypoxemia spraying method, reduces the oxygen content in sprayed coating, to reduce
Oxygen content in silicon ingot, strengthen the light decay effect of cell piece.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
A kind of hypoxemia spraying method that the embodiment of the present application provides is as shown in figure 1, Fig. 1 is one that the embodiment of the present application provides
The schematic diagram of kind hypoxemia spraying method.This method comprises the following steps：
S1：Using ceramic viscose glue and Ludox making adhesive, the weight of the ceramic viscose glue in described adhesive is more than institute
State the weight of Ludox；
It is high relative to Ludox content in coating of the prior art, and the oxygen content of the silica in Ludox is high,
Cause the silicon ingot oxygen content produced high, and the step focuses on making in the composition of adhesive in the present embodiment, silicon is molten
The weight of glue is less than the weight of ceramic viscose glue, and ceramic viscose glue will not bring oxygen, so as to avoid the oxygen of silicon ingot that final production goes out
The high phenomenon of content, and the weak easy dry linting of sprayed coating bonding force of the prior art, cause pot easy to stick in silicon ingot de-filming process so that
Silicon ingot can not keep integrality, reduce silicon ingot crystal forming rate, and in the present embodiment, ceramic viscose glue mixes with Ludox to be made
With can solve the problem, realize the effect of enhancing bonding force, avoid viscous pot, improve silicon ingot crystal forming rate.
S2：Pure water and alpha-silicon nitride powders are mixed, add described adhesive, and be stirred, the coating prepared；
Wherein, alpha-silicon nitride powders are a kind of important structural ceramic materials, are a kind of superhard materials, and itself has lubrication
Property, and wear-resistant, will not be with other inorganic acid reactions in addition to hydrofluoric acid, and resistance to corrosion is strong, anti-oxidant during high temperature, and
Cold shock can also be resisted, is heated to more than 1000 DEG C in atmosphere, quick refrigeration drastically heats again, also will not fragmentation.The implementation
In example, alpha-silicon nitride powders are sprayed and painted on crucible surface, and crucible surface is bonded at using adhesive, form coating so that in high temperature
Lower silica crucible and silicon are mutually isolated, cause crucible to rupture so as to prevent liquid-state silicon from being reacted with silica crucible, and after cooling
The final integrality for ensureing silicon ingot demoulding.
S3：Using purification of compressed air, the coating is sprayed to crucible internal walls.
In this step, the bonding force of coating can be improved by controlling the parameters such as spraying temperature and coating thickness.
The above-mentioned hypoxemia spraying method that the embodiment of the present application provides, due to making bonding using ceramic viscose glue and Ludox
Agent, the weight of the ceramic viscose glue in described adhesive is more than the weight of the Ludox, therefore can reduce the oxygen in sprayed coating
Content, to reduce the oxygen content in silicon ingot, strengthen the light decay effect of cell piece.
It should be noted that in above-mentioned steps S1, the ceramic viscose glue can include polyvinyl alcohol and polyurethane, this
The material of organic principle will not introduce oxygen to coating, so as to further reduce oxygen content in silicon ingot, and can strengthen sprayed coating
Bonding force.Further, it is 60% to 80% that can set ceramic viscose glue ratio shared in described adhesive, phase
Answer, the ratio shared by the Ludox is 20%-40%, it is seen that ceramic viscose glue accounts for the major part of adhesive, so as to reach drop
The purpose of low coating oxygen content.
A kind of embodiment is described below, as shown in Fig. 2 Fig. 2 is the another of the embodiment of the present application offer
The schematic diagram of kind hypoxemia spraying method.This method comprises the following steps：
A1：Using ceramic viscose glue and Ludox making adhesive, the weight of the ceramic viscose glue in described adhesive is more than institute
State the weight of Ludox；
A2：Alpha-silicon nitride powders described in pure water described in 1800ml and 700g are mixed, and add 500ml described adhesives, are stirred
Mix 20 minutes to 50 minutes, the coating prepared；
A3：Using the spray gun that pressure is 20psi to 40psi, apart from the position of the crucible internal walls 25cm to 30cm, to
The crucible internal walls spray the coating, and the width for positioning crucible described in land is 15cm to 20cm；
Wherein, the temperature range for controlling the spraying is 80 DEG C to 100 DEG C, relative to prior art, in the present embodiment
Spraying temperature is higher, can evaporate excessive moisture as far as possible, prevents overly wet past flow down of sprayed coating and causes sprayed coating uneven
The phenomenon that even, bonding force declines.
Moreover, the coating thickness scope for controlling the coating is 0.2mm to 0.5mm, relative to prior art, the present embodiment
In coating thickness increased, such adhesive effect is more preferable, and can preferably obstruct the oxygen in crucible into silicon ingot.
A4：The crucible is sintered.
Wherein, the purpose of sintering is to improve coating crystallinity, coating shedding caused by internal stress is avoided, so as to improve coating
Toughness and adhesive force.
By foregoing description, this hypoxemia spraying method of the embodiment of the present application offer, can reduce in sprayed coating
Oxygen content, to reduce the oxygen content in silicon ingot, strengthen the light decay effect of cell piece, and bonding force can be strengthened, preferably
Oxygen in resistance crucible enters in silicon ingot, can also prevent the obscission of coating from occurring.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (7)
- A kind of 1. hypoxemia spraying method, it is characterised in that including：Using ceramic viscose glue and Ludox making adhesive, the weight of the ceramic viscose glue in described adhesive is more than the silicon The weight of colloidal sol, ceramic viscose glue ratio shared in described adhesive are 60% to 80%；Pure water and alpha-silicon nitride powders are mixed, add described adhesive, and be stirred, the coating prepared；Using purification of compressed air, the coating is sprayed to crucible internal walls.
- 2. hypoxemia spraying method according to claim 1, it is characterised in that the ceramic viscose glue includes polyvinyl alcohol and gathered Urethane.
- 3. according to the hypoxemia spraying method described in claim any one of 1-2, it is characterised in that described by pure water and silicon nitride powder End mix, add described adhesive, and be stirred for：Alpha-silicon nitride powders described in pure water described in 1800ml and 700g are mixed, And 500ml described adhesives are added, stir 20 minutes to 50 minutes.
- 4. hypoxemia spraying method according to claim 3, it is characterised in that it is described to utilize purification of compressed air, to crucible Coating is described in inner-wall spraying：Using the spray gun that pressure is 20psi to 40psi, apart from the crucible internal walls 25cm to 30cm Position, spray the coating to the crucible internal walls, and the width for positioning crucible described in land is 15cm to 20cm.
- 5. hypoxemia spraying method according to claim 4, it is characterised in that the temperature range for controlling the spraying is 80 DEG C To 100 DEG C.
- 6. hypoxemia spraying method according to claim 5, it is characterised in that the coating thickness scope for controlling the coating is 0.2mm to 0.5mm.
- 7. hypoxemia spraying method according to claim 6, it is characterised in that spray the coating to crucible internal walls described Also include afterwards：The crucible is sintered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510597047.5A CN105063757B (en) | 2015-09-17 | 2015-09-17 | A kind of hypoxemia spraying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510597047.5A CN105063757B (en) | 2015-09-17 | 2015-09-17 | A kind of hypoxemia spraying method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105063757A CN105063757A (en) | 2015-11-18 |
| CN105063757B true CN105063757B (en) | 2017-12-29 |
Family
ID=54493252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510597047.5A Active CN105063757B (en) | 2015-09-17 | 2015-09-17 | A kind of hypoxemia spraying method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105063757B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333105A (en) * | 2018-04-03 | 2018-07-27 | 中铁山桥集团有限公司 | A kind of coating anti-slipping property energy method of inspection for steel bridge high-strength bolt joint face |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102167626A (en) * | 2010-12-30 | 2011-08-31 | 光为绿色新能源有限公司 | Preparation method of ceramic crucible coating layer for ingoting polysilicon |
| CN102221293A (en) * | 2011-06-08 | 2011-10-19 | 大连理工大学 | Preparation method of coating for melting crucible |
| CN103420618A (en) * | 2013-09-05 | 2013-12-04 | 蠡县英利新能源有限公司 | Solar cell crucible and spraying method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI400369B (en) * | 2005-10-06 | 2013-07-01 | Vesuvius Crucible Co | Crucible for the crystallization of silicon and process for making the same |
-
2015
- 2015-09-17 CN CN201510597047.5A patent/CN105063757B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102167626A (en) * | 2010-12-30 | 2011-08-31 | 光为绿色新能源有限公司 | Preparation method of ceramic crucible coating layer for ingoting polysilicon |
| CN102221293A (en) * | 2011-06-08 | 2011-10-19 | 大连理工大学 | Preparation method of coating for melting crucible |
| CN103420618A (en) * | 2013-09-05 | 2013-12-04 | 蠡县英利新能源有限公司 | Solar cell crucible and spraying method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105063757A (en) | 2015-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102797042B (en) | Crucible for melting crystalline silicon, method for producing crucible and spray coating liquid | |
| CN103506263B (en) | Method and the silicon nitride coating of oven dry are exempted from polysilicon crucible spraying | |
| CN105254309B (en) | A kind of 3D printing ceramic process | |
| CN105070816B (en) | A kind of LED fluorescent powder film slurries | |
| CN105130441A (en) | Silicon carbide ceramic membrane and preparation method thereof | |
| WO2014133077A1 (en) | Porous aluminum sintered compact | |
| CN105063757B (en) | A kind of hypoxemia spraying method | |
| CN104860717A (en) | Rigid ceramic thermal-insulation tile surface coating preparation method | |
| CN102911596B (en) | The preparation method of the bonding thermal control coating of variable emissivity | |
| EP4027093A1 (en) | Construction method for fiber lining surface of ethylene cracking furnace | |
| CN102367572A (en) | Sintering-free spraying method of polysilicon ingot crucible | |
| CN113321534A (en) | Glazing method and device for ceramic special-shaped product | |
| CN106283186A (en) | The preparation method of a kind of crucible pot coating for polysilicon casting ingot and crucible | |
| CN103626397B (en) | A kind of conductive glass and manufacture method thereof | |
| CN108913039A (en) | A method of preparing multicomponent modified inorganic phosphoric acid aluminium salt high-temperature Resistance Adhesives | |
| CN107815148A (en) | A kind of high temperature resistant infrared radiative energy-saving coating and preparation method thereof | |
| CN103663985A (en) | Manufacturing method of conductive plate glass | |
| CN103420618A (en) | Solar cell crucible and spraying method thereof | |
| CN106316310A (en) | Thermal hollow brick and preparation method thereof | |
| CN104230387B (en) | A kind of production method of pattern glazed ceramic brick | |
| CN107068873A (en) | Device and method for preparing perovskite solar cell | |
| CN100581764C (en) | Adobe forming device and shaping method thereof | |
| CN205777601U (en) | A kind of device for aerated-block building construction | |
| CN104311158A (en) | Matt under-glaze-color glazed brick production method | |
| CN104261890B (en) | A kind of dumb light under glazed throws the production method of glazed brick |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |