CN114919202A - Method for weaving carbon fiber composite material crucible preformed body and integrally forming carbon fiber composite material crucible preformed body and base - Google Patents
Method for weaving carbon fiber composite material crucible preformed body and integrally forming carbon fiber composite material crucible preformed body and base Download PDFInfo
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- CN114919202A CN114919202A CN202210251154.2A CN202210251154A CN114919202A CN 114919202 A CN114919202 A CN 114919202A CN 202210251154 A CN202210251154 A CN 202210251154A CN 114919202 A CN114919202 A CN 114919202A
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- carbon fiber
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- fiber composite
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- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 163
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 163
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 138
- 238000009941 weaving Methods 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 51
- 239000002131 composite material Substances 0.000 title claims abstract description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 9
- 239000010439 graphite Substances 0.000 claims abstract description 9
- 238000009940 knitting Methods 0.000 claims description 21
- 239000000835 fiber Substances 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 5
- 239000010453 quartz Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 8
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 8
- 239000013078 crystal Substances 0.000 description 4
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000009954 braiding Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005307 ferromagnetism Effects 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Woven Fabrics (AREA)
Abstract
The invention discloses a method for weaving a carbon fiber composite material crucible preformed body and integrally forming the carbon fiber composite material crucible preformed body and a base. The molding steps are as follows: calculating the number of carbon fiber weaving layers according to the structure and size requirements of the pre-forming body; the graphite base and the crucible core mold are fixed together through strong magnets, meanwhile, in the weaving process, weaving layers and net tires are alternately adopted, and meanwhile, the needling process is used, so that the connectivity between carbon fiber layers is improved. The integral forming method greatly enhances the structural performance of the crucible, reduces the raw material cost and the processing cost, and simultaneously prolongs the service life of the crucible.
Description
Technical Field
The invention relates to a carbon fiber composite material preformed body for producing or manufacturing monocrystalline silicon or polycrystalline silicon, in particular to a method for weaving a carbon fiber composite material preformed body and integrally forming the carbon fiber composite material preformed body and a base.
Background
In the production of silicon single crystal, a czochralski method (CZ method), in which silicon single crystal is pulled in a vertical direction from a melt, is generally used. One component in the fabrication of single crystal silicon is the graphite crucible, which is used to carry the inner single crystal silicon. Under the action of high temperature, the graphite crucible has the problems of cracking, corrosion failure and the like, so that the crucible cannot meet the normal use requirement. Further, as the single crystal silicon grows, the diameter of the crystal gradually increases, and heat is transferred in the process of the increase in the diameter of the crystal. The single crystal silicon has high heat capacity, so that the energy consumption is increased during heat transfer, and the requirement on the structural performance of the crucible is high.
The existing crucible preform manufacturing method generally adopts a winding mode, carbon fibers are wound into a crucible shape, then resin impregnation is carried out, and finally a carbon/carbon fiber composite crucible is manufactured. However, the wound preform is likely to have a stress concentration phenomenon in the structure, and the overall performance of the crucible is affected.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the wrapped preform is prone to stress concentration in the structure, which affects the overall performance of the crucible.
In order to solve the technical problems, the technical scheme of the invention is to provide a method for weaving a carbon fiber composite material crucible preformed body and integrally forming the carbon fiber composite material crucible preformed body and a base, which is characterized by comprising the following steps of:
calculating the number of carbon fiber woven layers according to the structure and size requirements of the crucible preformed body;
integrally weaving and forming a crucible base and a crucible core mold, weaving n carbon fibers along the central axis of the crucible core mold to obtain the calculated number of layers, and integrally forming the crucible base and the crucible core mold in the weaving process;
in the weaving process, the surfaces of the crucible base and the crucible core mold are alternately covered by carbon fiber weaving and net tires, and needling is carried out after weaving is finished;
before forming, the crucible core mold is extracted from the carbon fiber, and the strong magnet and the clamping tail end in the weaving process are detached simultaneously.
Preferably, the n carbon fibers are woven in a reciprocating manner by a three-dimensional weaving machine, and the crucible preform core mold reciprocates in a weaving ring of the three-dimensional weaving machine in the horizontal direction along the central axis of the crucible.
Preferably, the process of braiding the n carbon fibers along the central axis of the crucible is determined by the motion of the three-dimensional braiding machine.
Preferably, the length and the thickness of the n carbon fibers increase layer by layer as the number of the weaving layers increases in the process of weaving the n carbon fibers along the central axis of the crucible.
Preferably, weaving a carbon fiber woven layer on the surface of the crucible core mold, and then covering a carbon fiber net tire, wherein the carbon fiber net tire is alternately laid relative to the carbon fiber woven layer until the carbon fiber woven layer reaches the calculated carbon fiber woven layer number; the carbon fiber net tire is prepared from carbon fiber short fibers, is cotton-shaped, and is alternated with carbon fibers of the carbon fiber woven layer so as to reduce the pores of the braided fabric.
Preferably, after knitting is completed, needling is performed to integrate the carbon fiber mesh tire with the carbon fiber woven layer and maintain a relatively stable shape. The needling adopts a special needle to prick into the carbon fiber net tire and the carbon fiber woven layer, so that the carbon fibers of the carbon fiber net tire and the carbon fiber woven layer are better staggered.
Preferably, the crucible base is made of graphite or quartz, and the carbon fiber is woven outside the crucible base and covers the graphite or quartz surface. The carbon fiber cover comprises the carbon fiber woven layer and the carbon fiber net tire, and the carbon fiber woven layer and the carbon fiber net tire are alternately covered on the crucible base.
Preferably, the crucible base is "worker" style of calligraphy, including bowl form lower part and bowl form upper portion, bowl form lower part, bowl form upper portion constitute the crucible base jointly, are convenient for the carbon fiber weaving layer with the crisscross cooperation of carbon fiber net child is fixed together.
Preferably, when the crucible preform is woven, strong magnets are respectively added to the outsides of the crucible core mold and the crucible base to fix the crucible core mold and the crucible base. The strong magnets are two, one strong magnet is arranged in a groove at the tail end of the clamping in the weaving process and is placed on the upper part of the bowl together with the tail end of the clamping in the weaving process, and the two strong magnets attract each other, so that the stable shape is kept.
Preferably, the crucible core mold needs to be taken out after weaving is completed, and the carbon fiber woven layers and the carbon fiber net tires are alternately covered on the surfaces of the crucible core mold and the crucible base, so that the shape of the preformed body can be maintained after the crucible core mold is taken out.
In order to improve the performance of the crucible, the invention adopts the form that the carbon fiber composite material preformed body and the base are integrated, and the graphite base and the crucible body are integrally woven and formed, thereby ensuring that the bottom of the crucible has enough strength and heat resistance. The crucible structure structurally solves the problems of corrosion, cracking and the like of the crucible caused by high-temperature melting of monocrystalline silicon in the crucible, meets the production requirements of monocrystalline silicon or polycrystalline silicon, saves the manufacturing cost of the crucible, reduces the forming time of a preformed body through integral forming, and improves the manufacturing efficiency of the crucible.
Compared with the existing crucible, the carbon fiber composite crucible preform weaving and base integrated forming method can improve the carbon fiber coating property on the surface of the crucible, enhance the strength of the crucible, prolong the service life of the crucible and reduce the cost of raw materials. The crucible body adopts a method that carbon fibers are woven along the central axis of the crucible, the middle of the crucible body is alternately covered by a net tire, the net tire is prepared from carbon fiber short fibers and is cotton-shaped, and the net tire and woven layer carbon fibers are alternately arranged, so that the reduction of the pores of the woven fabric is facilitated. After knitting is completed, needling is performed to integrate the mesh and the knit layers and maintain a relatively stable shape. The defect that the strength of each direction of the crucible is different due to the fact that the preformed body manufactured by winding is avoided, and meanwhile, the polymerization force of the carbon fibers on the surface is improved, so that the structural strength of the preformed body of the crucible is improved. The method of integral molding is adopted, so that the connection performance of the crucible base and the crucible body is enhanced, and the service life of the product is prolonged.
Drawings
FIG. 1 is a cross-sectional view of a carbon fiber composite crucible preform;
FIG. 2 is a cross-sectional view of the bottom structure of a carbon fiber composite crucible preform;
FIG. 3 is a schematic view of the process of knitting the carbon fiber composite crucible preform and the base integrally.
In the figure:
1. the method comprises the following steps of crucible core mold, 2 crucible base, 3 bowl-shaped lower part, 4 bowl-shaped upper part, 5 carbon fiber, 6 weaving process clamping tail end, 7 strong magnet, 8 weaving ring and 9 three-dimensional weaving machine.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention can be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the claims appended to the present application.
The invention discloses a method for weaving a crucible preformed body and integrally forming the crucible preformed body and a base, which can effectively prolong the service life of a crucible in the manufacturing process of monocrystalline silicon or polycrystalline silicon, wherein the obtained crucible preformed body comprises a crucible core mould 1, a crucible base 2 and carbon fibers 5. The crucible core mold 1 is annularly arranged with the central axis of the crucible preform as the center and the cross section of the crucible preform being U-shaped.
The crucible base 2 is made of graphite or quartz materials and is covered on the surface of the graphite or quartz by weaving carbon fibers at the outer layer of the crucible base 2. The carbon fiber cover contain carbon fiber weaving layer and carbon fiber net child, carbon fiber weaving layer and carbon fiber net child cover in turn at the crucible base. The carbon fiber base 2 is I-shaped and comprises a bowl-shaped lower part 3 and a bowl-shaped upper part 4. The carbon fibers 5 belong to a multilayer fiber and comprise carbon fiber woven layers and alternating fiber covering layers of carbon fiber net tires. Weaving a carbon fiber woven layer on the surface of the crucible core mold, and covering a carbon fiber net tire. The carbon fiber net tire is prepared from one carbon fiber and is cotton-shaped, and the carbon fiber net tire and the carbon fiber woven layer are alternated, so that the pores of the braided fabric are reduced. After knitting is finished, needling is carried out, so that the carbon fiber net tire and the carbon fiber woven layer are integrated and keep a relatively stable shape.
The crucible core mold 1 and the crucible bottom 2 are connected together for weaving by the crucible preform weaving and base integrated forming method provided by the invention, and the integrated forming method can enhance the connection performance between the crucible bottom 2 and the crucible core mold 1. The crucible preforming body is woven by carbon fibers, the carbon fiber weaving layers and the carbon fiber net tires alternately cover the surfaces of the crucible mandrel 1 and the crucible base 2, and after the number of carbon fiber weaving layers and the thickness meet the requirements, the carbon fibers 5 are needled by adopting a needling process, so that the connection performance between the carbon fiber weaving layers is improved. Increase the carbon fiber net child between the carbon fiber weaving layer, reduce the hole between the fibre, can improve the cladding nature on crucible surface, guarantee that the concentricity is unanimous to prevent to weave the completion back crucible mandrel 1 and take out and lead to the crucible preforming body to take place deformation. Weaving a carbon fiber woven layer on the surface of the crucible core mold, and covering a carbon fiber net tire. The carbon fiber net tire is prepared from a carbon fiber short fiber and is flocculent, and the carbon fiber net tire and the woven layer carbon fiber are alternated, so that the pores of the braided fabric are reduced. After knitting is finished, needling is carried out, so that the carbon fiber net tire and the carbon fiber woven layer are integrated and keep a relatively stable shape.
The needling adopts a special needle to prick into the carbon fiber net tire and the carbon fiber woven layer, so that the carbon fibers of the carbon fiber net tire and the carbon fiber woven layer are better staggered.
Weaving process centre gripping end 6 and seting up flutedly, strong magnet 7 has two, and one is installed in weaving process centre gripping end's recess, and with weaving process centre gripping end 6 together, another is placed in bowl form upper portion 4, two strong ferromagnetism inter attraction to remain stable form.
The method for weaving the crucible preform and integrally forming the crucible preform and the base, disclosed by the embodiment, specifically comprises the following steps of:
In the later processing stage, a part of the outer side of the woven preform body can be cut off, the phenomenon that the fiber is separated from the original part of the crucible can possibly occur in the commonly wound crucible preform body, and the carbon fiber composite material crucible preform body weaving and base integrated forming method adopted by the invention can effectively avoid the phenomenon.
Therefore, the composite material crucible preformed body weaving and base integrated forming method adopted by the invention can improve the strength of the crucible to a great extent, save the raw materials and processing cost of the crucible preformed body, and simultaneously improve the service life of the crucible.
Finally, it should be noted that the above embodiments are not limited but only illustrative technical solutions of the present invention, and those skilled in the art should understand that modifications or technical substitutions can be made on the basis of the present invention without departing from the spirit and the claims of the technical solutions of the present invention, and all of them should be included in the scope of the claims of the present invention.
Claims (7)
1. A method for weaving a carbon fiber composite material crucible preforming body and integrally forming the carbon fiber composite material crucible preforming body and a base is characterized by comprising the following steps of:
calculating the number of carbon fiber woven layers according to the structure and size requirements of the crucible preformed body;
integrally weaving a crucible base and a crucible core mold, wherein the crucible core mold adopts n carbon fibers to weave the calculated number of layers along the central axis of the crucible, and the crucible base and the crucible core mold are integrally woven in the weaving process;
in the weaving process, the surfaces of the crucible base and the crucible core mold are alternately covered by carbon fiber weaving and net tire, and needling is performed after weaving is finished;
before forming, the crucible core mold is extracted from the carbon fiber weaving, and the strong magnet and the clamping tail end in the weaving process are detached simultaneously.
2. The method for knitting a carbon fiber composite crucible preform and integrally forming the same with a base as claimed in claim 1, wherein the method for knitting n carbon fibers in a reciprocating manner by using a three-dimensional knitting machine, and the crucible preform core mold is reciprocated in a horizontal direction along a central axis of the crucible in a knitting ring of the three-dimensional knitting machine.
3. The method for knitting a carbon fiber composite crucible preform and integrally forming the carbon fiber composite crucible preform with a base as claimed in claim 1, wherein the knitting of the n carbon fibers along the central axis of the crucible is determined by the movement of a three-dimensional knitting machine, and the fiber length and the thickness increase layer by layer as the number of knitting layers increases.
4. The method for knitting a carbon fiber composite crucible preform and integrally forming the carbon fiber composite crucible preform and a base as claimed in claim 1, wherein a carbon fiber woven layer is woven on the surface of the crucible mandrel and then covered with a carbon fiber net tire, the carbon fiber net tire is alternately laid with respect to the carbon fiber woven layer until the carbon fiber woven layer reaches the calculated number of carbon fiber woven layers; the carbon fiber net tire is prepared from carbon fiber short fibers and is cotton-shaped, and the carbon fiber net tire and the carbon fiber woven layer short carbon fibers are alternated to reduce the pores of the braided fabric.
5. The method for knitting a carbon fiber composite crucible preform and integrally forming the carbon fiber composite crucible preform and a base as claimed in claim 1, wherein after the knitting is completed, the needling is performed to integrate the carbon fiber mesh and the carbon fiber woven layer and to maintain a relatively stable shape; the needling adopts the needles to penetrate into the carbon fiber net tire and the carbon fiber woven layer, so that the carbon fibers of the carbon fiber net tire and the carbon fiber woven layer are better staggered.
6. The method for weaving the carbon fiber composite crucible preform and integrally forming the carbon fiber composite crucible preform and the base as claimed in claim 1, wherein the crucible base is made of graphite or quartz as an inner material and is in an I shape comprising a bowl-shaped lower part and a bowl-shaped upper part.
7. The method for knitting a carbon fiber composite crucible preform and integrally forming the preform and the base as claimed in claim 6, wherein before knitting, strong magnets are respectively added into the crucible core mold and the grooves at the clamping ends in the knitting process, and the two strong magnets attract each other, thereby fixing the crucible base and the crucible core mold together; after weaving, the strong magnet is detached, and the crucible core mold is taken out in a stretching mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210251154.2A CN114919202A (en) | 2022-03-15 | 2022-03-15 | Method for weaving carbon fiber composite material crucible preformed body and integrally forming carbon fiber composite material crucible preformed body and base |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210251154.2A CN114919202A (en) | 2022-03-15 | 2022-03-15 | Method for weaving carbon fiber composite material crucible preformed body and integrally forming carbon fiber composite material crucible preformed body and base |
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|---|---|
| CN114919202A true CN114919202A (en) | 2022-08-19 |
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| CN202210251154.2A Pending CN114919202A (en) | 2022-03-15 | 2022-03-15 | Method for weaving carbon fiber composite material crucible preformed body and integrally forming carbon fiber composite material crucible preformed body and base |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024055392A1 (en) * | 2022-09-15 | 2024-03-21 | 南京航空航天大学 | Weaving and needling integrated preform formation method and preform formation device |
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|---|---|---|---|---|
| JPH10330185A (en) * | 1997-05-28 | 1998-12-15 | Toyo Tanso Kk | Crucible for pulling single crystal and its production |
| JP2000290093A (en) * | 1999-04-09 | 2000-10-17 | Tokai Carbon Co Ltd | Carbon crucible for single crystal pulling-up |
| WO2009024045A1 (en) * | 2007-08-21 | 2009-02-26 | Hunan Kingbo Carbon-Carbon Composites Co. Ltd | A c/c composite crucible and a producing method thereof |
| CN202830218U (en) * | 2011-05-18 | 2013-03-27 | 科发伦材料株式会社 | Carbon fiber reinforced carbon composite crucible and composite cylinder component |
| CN108638599A (en) * | 2018-04-18 | 2018-10-12 | 保定顺天新材料股份有限公司 | Monocrystaline silicon stove Carbon fibe crucible knitted body and preparation method thereof |
| CN112028657A (en) * | 2020-08-03 | 2020-12-04 | 杭州卓导新材料有限公司 | Preparation method of carbon/carbon composite material crucible |
-
2022
- 2022-03-15 CN CN202210251154.2A patent/CN114919202A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10330185A (en) * | 1997-05-28 | 1998-12-15 | Toyo Tanso Kk | Crucible for pulling single crystal and its production |
| JP2000290093A (en) * | 1999-04-09 | 2000-10-17 | Tokai Carbon Co Ltd | Carbon crucible for single crystal pulling-up |
| WO2009024045A1 (en) * | 2007-08-21 | 2009-02-26 | Hunan Kingbo Carbon-Carbon Composites Co. Ltd | A c/c composite crucible and a producing method thereof |
| CN202830218U (en) * | 2011-05-18 | 2013-03-27 | 科发伦材料株式会社 | Carbon fiber reinforced carbon composite crucible and composite cylinder component |
| CN108638599A (en) * | 2018-04-18 | 2018-10-12 | 保定顺天新材料股份有限公司 | Monocrystaline silicon stove Carbon fibe crucible knitted body and preparation method thereof |
| CN112028657A (en) * | 2020-08-03 | 2020-12-04 | 杭州卓导新材料有限公司 | Preparation method of carbon/carbon composite material crucible |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024055392A1 (en) * | 2022-09-15 | 2024-03-21 | 南京航空航天大学 | Weaving and needling integrated preform formation method and preform formation device |
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Inventor after: Meng Chuo Inventor after: Sun Yize Inventor after: Cai Gaowei Inventor after: Zhang Yujing Inventor before: Meng Chuo Inventor before: Sun Yize Inventor before: Cai Gaowei Inventor before: Zhang Yujing |