CN101857456A - Method for preparing C/C composite material - Google Patents
Method for preparing C/C composite material Download PDFInfo
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- CN101857456A CN101857456A CN201010209224A CN201010209224A CN101857456A CN 101857456 A CN101857456 A CN 101857456A CN 201010209224 A CN201010209224 A CN 201010209224A CN 201010209224 A CN201010209224 A CN 201010209224A CN 101857456 A CN101857456 A CN 101857456A
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- carbon fiber
- fiber felt
- xylene
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Abstract
The invention relates to a method for preparing a C/C composite material, which is mainly used for preparation of the C/C composite material. The method mainly comprises the following steps of: rinsing a carbon fiber felt serving as a raw material by using purified water, drying the carbon fiber felt, then placing the carbon fiber felt into a vacuum generator, performing infiltration on the carbon fiber felt skeleton by using CH3ArCH2NH2 as a precursor in the vacuum generator, thermally treating the infiltrated carbon fiber felt at a high temperature, performing pyrolysis on the carbon fiber felt at the high temperature to form pyrolysis carbon infiltrating into the carbon fiber felt skeleton material and deposited on the surface of the carbon fiber, then soaking the carbon fiber felt into o/m-xylene series compound solution, and performing carbonization and graphitization treatment on the soaked material to obtain the C/C composite material. The tensile strength of the prepared C/C composite material is more than 150GPa, the density is 0.38 to 0.42g/m<3>, and the thermal expansion coefficient is less than 0.42*10<-6>K<-1>. The preparation method has the main advantages of mature technology and simple and convenient operation, and can prepare the high-quality C/C composite material.
Description
One, technical field:
The invention belongs to a kind of preparation method of chemical field, be mainly used in a kind of preparation of C/C matrix material.
Two, background technology:
The C/C matrix material is a kind of material that is made of high strength carbon cellulose fiber and carbon element matrix, have that intensity is big, thermotolerance is strong, thermal-shock resistance performance height, characteristics such as chemical resistant properties is strong, thermal expansivity is little, thermal conductivity is low, purity height, can be widely used in fields such as national defence, space flight, machinofacture, automobile.The C/C composite property of domestic present manufacturing is relatively poor, and the quality instability has been compared big gap with external like product, and price is higher, suddenly need a kind of high-performance, the preparation technology of C/C matrix material cheaply,, meet the need of market to produce this kind product.
Three, summary of the invention:
The preparation method who the purpose of this invention is to provide a kind of C/C matrix material produces high-performance, C/C matrix material cheaply, satisfies the requirement of national defence, space flight, machinofacture, automobile and other industries.
This preparation method adopts carbon fiber felt as raw material, through the pure water rinsing, insert in the vacuum generator after the 100-120 ℃ of oven dry, in vacuum generator with CH
3ArCH
2NH
2Be presoma, the carbon fiber felt skeleton is permeated, carbon fiber felt after the infiltration carries out high-temperature heat treatment under 2500～2600 ℃ of temperature, make it pyrolysis under hot conditions, the formation RESEARCH OF PYROCARBON penetrates in the carbon fiber felt framework material and is deposited on carbon fiber surface, afterwards, adopts m-xylene series compound solution is flooded it, the material of dipping back gained is through 700 ℃ of charings, and 2800 ℃ of graphitization processing obtain the C/C matrix material.Prepared C/C matrix material tensile strength is greater than 150GPa, and density is 0.38-0.42g/m
3, thermal expansivity is less than 0.42 * 10
-6K
-1
Described is mixed solution to m-xylene, purified petroleum benzin, octanol, propyl carbinol, acetone to m-xylene series compound solution.
Described is 5: 5: 2 to the proportioning to m-xylene, purified petroleum benzin, octanol, propyl carbinol, acetone in the m-xylene series compound solution: 2: 1.5.
The main beneficial effect of present method is owing to adopt the carbon fiber of m-xylene series compound solution after to pyrolysis processing flooded, improved the adhesion strength of RESEARCH OF PYROCARBON on carbon fiber felt, carry out high-temperature heat treatment behind the dipping, further improved the tensile strength of gained C/C matrix material.
Four, embodiment:
This preparation method is specific as follows: adopt carbon fiber felt as raw material,, insert in the vacuum generator after the 100-120 ℃ of oven dry through the pure water rinsing, in vacuum generator with CH
3ArCH
2NH
2Be presoma, the carbon fiber felt skeleton permeated CH
3ArCH
2NH
2Addition be 5-8% (accounting for the gross weight of carbon fiber felt), penetration time is 5-6 hour, the infiltration temperature be 35-65 ℃, the carbon fiber felt after the infiltration carries out high-temperature heat treatment, CH at vacuum generator under 2500～2600 ℃ of temperature
3ArCH
2NH
2Pyrolysis under hot conditions, the formation RESEARCH OF PYROCARBON penetrates in the carbon fiber felt framework material and is deposited on carbon fiber surface, afterwards, the gained material is inserted in the steeping vat, employing is flooded m-xylene series compound solution, addition to m-xylene series compound solution is 15-20% (accounting for the gross weight of gained material), the steeping fluid temperature is 30-50 ℃, dipping time is 3-3.5 hour, the material of dipping back gained is inserted in the high frequency graphitizing furnace through 700 ℃ of charings, 2800 ℃ of graphitization processing obtain the C/C matrix material, and prepared C/C matrix material is back packing warehouse-in after testing.
Preparation method's main technique condition of a kind of C/C matrix material of the present invention sees Table one
| Sequence number | Carbon fiber felt (kg) | ?CH 3ArCH 2?NH 2?(kg) | To m-xylene series compound solution (kg) | To m-xylene (kg) | Purified petroleum benzin (kg) | Octanol (kg) | Propyl carbinol (kg) | Acetone (kg) |
| ??1 | ??1 | ?0.05 | ??0.155 | ??0.05 | ??0.05 | ??0.02 | ??0.02 | ??0.015 |
The technical indicator contrast table of C/C matrix material of the present invention and common C/C matrix material sees Table two
Claims (3)
1. the preparation method of a C/C matrix material is mainly by rinsing, oven dry, the CH of carbon fiber felt
3ArCH
2NH
2Infiltration, pyroprocessing, technologies such as m-xylene series compound solution impregnation, charing, greying, detection, packing, warehouse-in are formed, it is characterized in that: adopt carbon fiber felt as raw material, through the pure water rinsing, insert in the vacuum generator after the 100-120 ℃ of oven dry, in vacuum generator with CH
3ArCH
2NH
2Be presoma, the carbon fiber felt skeleton is permeated, carbon fiber felt after the infiltration carries out high-temperature heat treatment under 2500～2600 ℃ of temperature, make it pyrolysis under hot conditions, the formation RESEARCH OF PYROCARBON penetrates in the carbon fiber felt framework material and is deposited on carbon fiber surface, afterwards, employing is flooded it m-xylene series compound solution, the material of dipping back gained is through 700 ℃ of charings, 2800 ℃ of graphitization processing obtain the C/C matrix material, prepared C/C matrix material tensile strength is greater than 150GPa, and density is 0.38-0.42g/m
3, thermal expansivity is less than 0.42 * 10
-6K
-1
2. the preparation method of a kind of C/C matrix material according to claim 1 is characterized in that: described to m-xylene series compound solution for to the mixed solution of m-xylene, purified petroleum benzin, octanol, propyl carbinol, acetone.
3. according to the preparation method of claim 1,2 described a kind of C/C matrix materials, it is characterized in that: described is 5: 5: 2 to the proportioning to m-xylene, purified petroleum benzin, octanol, propyl carbinol, acetone in the m-xylene series compound solution: 2: 1.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010209224A CN101857456A (en) | 2010-06-11 | 2010-06-11 | Method for preparing C/C composite material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010209224A CN101857456A (en) | 2010-06-11 | 2010-06-11 | Method for preparing C/C composite material |
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| CN101857456A true CN101857456A (en) | 2010-10-13 |
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| CN201010209224A Pending CN101857456A (en) | 2010-06-11 | 2010-06-11 | Method for preparing C/C composite material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168365A (en) * | 2010-12-22 | 2011-08-31 | 中国科学院山西煤炭化学研究所 | Cleaning method of residual electrolyte on surface of carbon fiber |
| CN104649701A (en) * | 2015-03-10 | 2015-05-27 | 李宇花 | Preparation method of high-strength light-weight carbon/carbon composite material |
| CN107382352A (en) * | 2017-06-28 | 2017-11-24 | 常州市顺旭商贸有限公司 | A kind of preparation method of silicon magnesium ceramics based composite fibre |
| CN107415354A (en) * | 2017-07-24 | 2017-12-01 | 苏州宏久航空防热材料科技有限公司 | A kind of low heat conduction high-temperature resistance carbon fiber stereo fabric composite |
-
2010
- 2010-06-11 CN CN201010209224A patent/CN101857456A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168365A (en) * | 2010-12-22 | 2011-08-31 | 中国科学院山西煤炭化学研究所 | Cleaning method of residual electrolyte on surface of carbon fiber |
| CN102168365B (en) * | 2010-12-22 | 2013-06-12 | 中国科学院山西煤炭化学研究所 | Cleaning method of residual electrolyte on surface of carbon fiber |
| CN104649701A (en) * | 2015-03-10 | 2015-05-27 | 李宇花 | Preparation method of high-strength light-weight carbon/carbon composite material |
| CN104649701B (en) * | 2015-03-10 | 2015-11-04 | 李宇花 | A kind of preparation method of high-strength light carbon/carbon compound material |
| CN107382352A (en) * | 2017-06-28 | 2017-11-24 | 常州市顺旭商贸有限公司 | A kind of preparation method of silicon magnesium ceramics based composite fibre |
| CN107415354A (en) * | 2017-07-24 | 2017-12-01 | 苏州宏久航空防热材料科技有限公司 | A kind of low heat conduction high-temperature resistance carbon fiber stereo fabric composite |
| CN107415354B (en) * | 2017-07-24 | 2019-06-11 | 苏州宏久航空防热材料科技有限公司 | A kind of low thermally conductive high-temperature resistance carbon fiber stereo fabric composite material |
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Application publication date: 20101013 |