CN103738034B - Wave suction composite material of a kind of C/C doping and preparation method thereof - Google Patents
Wave suction composite material of a kind of C/C doping and preparation method thereof Download PDFInfo
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- CN103738034B CN103738034B CN201310309231.6A CN201310309231A CN103738034B CN 103738034 B CN103738034 B CN 103738034B CN 201310309231 A CN201310309231 A CN 201310309231A CN 103738034 B CN103738034 B CN 103738034B
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Abstract
The invention discloses Wave suction composite material of a kind of C/C doping and preparation method thereof.It is characterized in that being made up of carbon base body, carbon fiber reinforcement, wave absorbing agent and duct, described duct is evenly present in the part of C/C composite near surface, wave absorbing agent is filled in duct, duct is single or multiple lift, and its shape can be linear or Curved, can parallel distribution or cross-distribution between duct with duct, described wave absorbing agent is conductive black, or be Ferrite Absorber, or be metal and oxide ultra fine powder, or be polycrystalline iron fiber.Wave absorbing agent due to this invention is present in C/C composite inner, thus avoids high temperature and high velocity air to the damage of wave absorbing agent.
Description
Technical field
The present invention relates to a kind of Wave suction composite material and preparation method thereof, particularly relate to Wave suction composite material of a kind of C/C doping and preparation method thereof.
Technical background
Stealth technology is the characteristic signal by controlling and reduce armament systems, makes it be difficult to the technology being detected, identifying, following the tracks of and attacking.In modern and future war, radar is the most reliable means of the detection of a target, and the research of stealth technology is attached most importance to radar invisible.The stealth capabilities of armament systems and can use stealth material to realize by configuration design, but the decline of aerodynamic quality can be caused to the too much requirement of profile, and cause reduction and the unknown losses in dressing space, so the research carrying out absorbing material becomes the key of stealth technology.According to the version of absorbing material, it can be divided into coating type absorbing material, patch-type absorbing material, inhale ripple putty, Wave suction composite material etc.For suction ripple/carry integrated absorbing material and structural wave-absorbing material, taken into account carrying and inhaled ripple dual-use function, additionally not gained in weight, and material this in mechanical property and absorbing property, there is stronger designability, thus there is stronger practical value.Absorbing material can be divided into magnetic loss type absorbing material, dielectric loss type absorbing material and " two multiple " type absorbing material 3 class according to wave-absorbing mechanism.At the high temperature position such as jet pipe of aircraft, its operating temperature is often more than 700 DEG C, and most of magnetic absorbent loses absorbing property because Curie temperature is lower, causes high temperature absorbing material only to rely on electrical loss mechanism to carry out absorbing radar wave.
Document " number of patent application is the Chinese invention patent of 201110104205.0 " discloses a kind of heatproof thermal spraying absorption coating and dusty spray preparation method thereof, this absorption coating comprises absorbent and for boning and disperseing the inorganic binder of absorbent, the forming technology of this coating is hot-spraying technique.Its temperature tolerance higher than 300 DEG C, can have good absorbing property, and the mechanical performance of coating is excellent, can meet dissimilar parts surface coating and prepare requirement.But the microwave absorbing coating that document is carried has a serious defect, and namely this coating can not use at higher temperatures, washes away lower coating and easily peels off, have a strong impact on the absorbing property of material at the air of high temperature and high speed.
Summary of the invention
Object of the present invention is intended to overcome the defect used in the environment that existing absorbing material should not wash away at high-temperature high-speed airflow, provides a kind ofly to wash away in environment the method effectively falling protection radar wave getter at high-temperature high-speed airflow.
The technical scheme adopted for realizing object of the present invention is: provide the Wave suction composite material that a kind of C/C adulterates, it is characterized in that being made up of carbon base body, carbon fiber reinforcement, wave absorbing agent and duct, it is characterized in that duct is evenly present in the part of C/C composite near surface, wave absorbing agent is filled in duct.Described duct is circular, and diameter is 1 ~ 3mm, and duct is single or multiple lift, and the thickness on outermost duct layer distance surface is 2 ~ 20mm.The volume ratio that duct accounts for integral material is 5 ~ 35%, and its shape can be linear or Curved, can parallel distribution or cross-distribution between duct with duct.Described wave absorbing agent is conductive black, or is ferrite powder, or is metal and oxide ultra fine powder, and the granularity of powder is 1 ~ 20 μm.
The invention also discloses the preparation method of the Wave suction composite material that a kind of C/C adulterates, it is characterized in that the step comprising following order:
(1) in the enhancing structure formed at carbon fiber knit or lamination, prefabricated Nb silk or quartz fibre are wherein;
(2) carbon base body is synthesized and density composite by the method for chemical vapor infiltration or liquid impregnation;
(3) prepared composite be impregnated in the mixed solution of hydrofluoric acid solution or hydrofluoric acid and sulfuric acid, keep a period of time;
(4) by composite vacuum degassing, dewater, or to dry, or hot-air seasoning, obtain the C/C composite that there is duct inside;
(5) with the graphite pin of fine sandpaper polishing preparation some, diameter is 1 ~ 3mm, and length is 5 ~ 10mm;
(6) wave absorbing agent powder is inserted in the duct of made C/C composite inner, fill out with the graphite pin prepared by (5) and seal duct;
(7) obtained a kind of Wave suction composite material of C/C doping.
Beneficial effect of the present invention: most of magnetic absorbent due to Curie temperature lower, absorbing property can be lost in hot environment, high temperature absorbing material is caused only to rely on electrical loss mechanism to carry out absorbing radar wave, wave absorbing agent due to this invention is present in C/C composite inner, thus avoids high temperature and high velocity air to the damage of wave absorbing agent.
Accompanying drawing explanation
Fig. 1 is the sectional view of the Wave suction composite material that a kind of C/C adulterates.
Fig. 2 is the top view of the Wave suction composite material that a kind of C/C adulterates.
Detailed description of the invention
Below in conjunction with specific embodiment, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims and limited.
Embodiment
Fig. 1 is the sectional view of the Wave suction composite material that a kind of C/C adulterates.Wherein, [10] are the C/C composite layers that carbon base body and carbon fiber reinforcement are formed, and [20] are ducts, and [30] are radar wave absorbing agents, and [40] are graphite pins; It is characterized in that duct is evenly present in the part of C/C composite near surface.Duct is circular, and diameter is 2mm, and the thickness on duct layer distance surface is 10mm.The volume ratio that duct accounts for integral material is 20%.Duct shape is linear, parallel distribution between duct with duct.The wave absorbing agent filled is ferrite wave absorbing agent.
The preparation method of the Wave suction composite material of above-mentioned C/C doping, concrete steps are as follows:
(1) in the enhancing structure formed at carbon fiber knit or lamination, prefabricated Nb silk wherein;
(2) carbon base body is synthesized and density composite by the method for chemical vapor infiltration;
(3) prepared composite be impregnated in the mixed solution of hydrofluoric acid and sulfuric acid, keep a period of time;
(4) by composite vacuum degassing, dewater, or to dry, or hot-air seasoning, obtain the C/C composite that there is duct inside;
(5) with the graphite pin of fine sandpaper polishing preparation some, diameter is 2mm, and length is 6mm;
(6) wave absorbing agent powder is inserted in the duct of made C/C composite inner, fill out with the graphite pin prepared by (5) and seal duct;
(7) obtained a kind of Wave suction composite material of C/C doping.
Claims (4)
1. the Wave suction composite material of a C/C doping, be made up of carbon base body, carbon fiber reinforcement, wave absorbing agent and duct, it is characterized in that duct is evenly present in the part of C/C composite near surface, wave absorbing agent is filled in duct, and duct is circular, and diameter is 1 ~ 3mm, duct is single or multiple lift, the thickness on layer distance surface, outermost duct is 2 ~ 20mm, and duct shape can be linear or Curved, can parallel distribution or cross-distribution between duct with duct.
2. Wave suction composite material according to claim 1, is characterized in that the volume ratio that described duct accounts for integral material is 5 ~ 35%.
3. Wave suction composite material according to claim 1, is characterized in that described wave absorbing agent is conductive black, or is ferrite powder, or is metal and oxide ultra fine powder, and the granularity of powder is 1 ~ 20 μm.
4. a preparation method for the Wave suction composite material of C/C doping, is characterized in that the step comprising following order:
(1) in the enhancing structure formed at carbon fiber knit or lamination, prefabricated Nb silk or quartz fibre are wherein;
(2) carbon base body is synthesized and density composite by the method for chemical vapor infiltration or liquid impregnation;
(3) prepared composite be impregnated in the mixed solution of hydrofluoric acid solution or hydrofluoric acid and sulfuric acid, keep a period of time;
(4) by composite vacuum degassing, dewater, or to dry, or hot-air seasoning, obtain the C/C composite that there is duct inside;
(5) with the graphite pin of fine sandpaper polishing preparation some, diameter is 1 ~ 3mm, and length is 5 ~ 10mm;
(6) wave absorbing agent powder is inserted in the duct of made C/C composite inner, fill out with the graphite pin prepared by (5) and seal duct;
(7) obtained a kind of Wave suction composite material of C/C doping.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310309231.6A CN103738034B (en) | 2013-07-23 | 2013-07-23 | Wave suction composite material of a kind of C/C doping and preparation method thereof |
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| CN201310309231.6A CN103738034B (en) | 2013-07-23 | 2013-07-23 | Wave suction composite material of a kind of C/C doping and preparation method thereof |
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| CN103738034A CN103738034A (en) | 2014-04-23 |
| CN103738034B true CN103738034B (en) | 2016-02-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105400018B (en) * | 2015-12-21 | 2017-07-28 | 中国科学院长春应用化学研究所 | Micropore absorbing material with array structure surface and preparation method thereof |
| CN110937892B (en) * | 2019-12-13 | 2021-09-21 | 西安航空学院 | High-temperature absorbent, ultrathin high-temperature wave-absorbing material and preparation method thereof |
| CN114702318B (en) * | 2022-04-18 | 2023-02-28 | 西北工业大学 | Ceramic wave-absorbing metamaterial and preparation method and application thereof |
Citations (4)
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|---|---|---|---|---|
| CN87106829A (en) * | 1986-09-10 | 1988-05-18 | 联合工艺公司 | The molding methods of carbon-carbon composite |
| JPH04160059A (en) * | 1990-10-24 | 1992-06-03 | Hitachi Chem Co Ltd | Production of carbon fiber reinforcing carbon composite material |
| CN102167611A (en) * | 2011-01-27 | 2011-08-31 | 无锡市弟兆碳材料有限公司 | Method for preparing carbon/carbon composite material plate |
| CN102826867A (en) * | 2012-09-13 | 2012-12-19 | 湖南省鑫源新材料股份有限公司 | Carbon/carbon composite material flat plate preparation method |
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2013
- 2013-07-23 CN CN201310309231.6A patent/CN103738034B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87106829A (en) * | 1986-09-10 | 1988-05-18 | 联合工艺公司 | The molding methods of carbon-carbon composite |
| JPH04160059A (en) * | 1990-10-24 | 1992-06-03 | Hitachi Chem Co Ltd | Production of carbon fiber reinforcing carbon composite material |
| CN102167611A (en) * | 2011-01-27 | 2011-08-31 | 无锡市弟兆碳材料有限公司 | Method for preparing carbon/carbon composite material plate |
| CN102826867A (en) * | 2012-09-13 | 2012-12-19 | 湖南省鑫源新材料股份有限公司 | Carbon/carbon composite material flat plate preparation method |
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Address after: 215400 Chengxiang City, Taicang Province town of the People South Road, No. 162, No. Patentee after: TAICANG PAIOU TECHNOLOGY CONSULTATION SERVICE CO., LTD. Address before: Taicang City, Suzhou City, Jiangsu Province, and 215400 Metro Jianxiong Road No. 20 South Road 2 Patentee before: TAICANG PAIOU TECHNOLOGY CONSULTATION SERVICE CO., LTD. |