CN104674540A - Direct growth method of spiral carbon fiber on carbon fiber fabric body - Google Patents
Direct growth method of spiral carbon fiber on carbon fiber fabric body Download PDFInfo
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Abstract
The invention discloses a direct growth method of a spiral carbon fiber on a carbon fiber fabric body. The method comprises the following steps: firstly, the carbon fiber fabric body is subjected to degumming treatment, Fe-Ni catalyst solutions with different concentrations are prepared, the carbon fiber fabric body is impregnated in the Fe-Ni catalyst solutions in sequence and is dried, and finally, the carbon fiber fabric body is placed into a tube furnace, mixed gas of acetylene, argon gas and hydrogen gas is introduced into the tube furnace for being subjected to catalytic cracking reaction with the treated fabric body, and the spiral carbon fiber forms the surface of the carbon fiber fabric body. The direct growth method of the spiral carbon fiber on the carbon fiber fabric body has the advantages that the carbon fiber fabric body with excellent performances is used as a base body, and the spiral carbon fiber with high quality and high purity grows on the base body; and the spiral carbon fiber and the carbon fiber fabric body can be connected firmly, a composite product has the good performance, the preparation process and the preparation equipment are simple and the method can be promoted and applied easily.
Description
Technical field
The present invention relates to the technology of preparing of carbon nanomaterial, more specifically to the method for direct growth screw carbon fibre on a kind of carbon fiber knit body.
Background technology
Since screw carbon fibre is found, just causes the interest of many researchers, and it is conducted extensive research.Spiral carbon fiber is a kind of material of very attractive, its special spiral makes material have the process based prediction model such as low-density, high ratio modulus, high conductivity, high-ratio surface sum super-elasticity, is expected to be widely used in the miniature instrument member arts such as radio-radar absorber, hydrogen-storing device, spiral complex spring and touch sensor.
The research of the synthesis and property of spiral carbon fiber has attracted the interest of many researchers. and the method preparing screw carbon fibre generally adopts: one, load method, namely adopt the method such as dipping, plated film, ion sputtering, electrochemical deposition in advance by catalyst cupport on carrier, then catalyst is placed in the growth that reactor realizes spiral carbon nano pipe.Two, swim method, namely catalyst not only can load on carrier, and together can also introduce reactor with carbon source, catalyst original position is formed, and namely catalyst swims and enters reactor, realizes the growth of screw carbon fibre.Load method can carry out the growth of screw carbon fibre on different matrixes, is all generally to grow on graphite or ceramic substrate, and the coiled carbon fibers skewness after growth, output is lower, there is no the method effectively preparing coiled carbon fibers in a large number.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide the method for direct growth screw carbon fibre on a kind of carbon fiber knit body.
Technical purpose of the present invention is achieved by following proposal:
A method for direct growth screw carbon fibre on carbon fiber knit body, adopts chemical vapour deposition technique to carry out the growth of coiled carbon fibers, carries out according to following step:
1) carbon fiber knit body is put into the glue that the attachment of removing carbon fiber surface heat-treated by tube furnace under ar gas environment, argon flow amount is 50-500sccm, preferred 100-400sccm, heat treatment temperature is 500-1000 DEG C, preferred 700-900 DEG C, processing time is 10-100min, preferred 40-80min, the carbon fiber knit body handled well is stayed do for subsequent use;
2) by the mol ratio 1:(1-5 of iron and nickel), join in ethanol by ferric nitrate and nickel nitrate, preparation 0.01-0.1mol/L, the ferric nitrate of preferred 0.0125-0.075mol/L and nickel nitrate solution, the ultrasonic Solution Dispersion that makes is even;
3) the carbon fiber knit body of step 1) process is put into step 2) solution in flood 10-300s, preferred 100-300s, after taking-up, be placed in 60-100 DEG C, dry 1-5h in the drying box of preferred 70-90 DEG C, preferred 1.5-4h, put it in quartz boat, and be placed in the flat-temperature zone of quartz ampoule, 300-500 DEG C is warming up to heating rate 10 DEG C/min by room temperature 20-25 DEG C, preferred 350-450 DEG C, calcining at constant temperature 1-3h under argon shield, preferred 1.5-3h, obtains the carbon fiber knit body that load has catalyst;
4) the carbon fiber knit body of catalyst the load of step 3) gained is had to be warming up to 500-600 DEG C with heating rate 10 DEG C/min under argon shield, take flow as the preferred 150-250sccm of 100-300sccm, in crystal reaction tube, pass into hydrogen reduce, recovery time is 30-150min, preferred 50-100min, then under argon shield, temperature is elevated to 750-850 DEG C, preferred 780-800 DEG C, when being elevated to reaction temperature, argon gas is passed in reaction tube, hydrogen, hydrogen sulfide, acetylene reacts, wherein, argon gas, hydrogen, hydrogen sulfide, acetylene by volume flow-rate ratio is (50-300sccm): (30-300sccm): (10-100sccm): (10-100sccm), preferred argon gas, hydrogen, hydrogen sulfide, acetylene by volume flow-rate ratio is (70-200sccm): (150-300sccm): (40-80sccm): (50-90sccm), reaction time is 10-100min, preferred 20-60min, room temperature 20-25 DEG C is dropped in argon shield after reaction terminates, obtain growth on carbon fiber knit body and have screw carbon fibre.
The carbon fiber knit body that present invention employs excellent performance carries out the growth of coiled carbon fibers as matrix, the screw carbon fibre of preparation has quality and the high advantage of purity, and connection that can be stronger with carbon fiber substrate, preparation process and equipment simple, and combination product has good performance, for its widely investigation and application lay the foundation.
Accompanying drawing explanation
Fig. 1 is the stereoscan photograph of the carbon fiber knit body after growth spiral shape carbon fiber.
Fig. 2 is the stereoscan photograph (1) of the screw carbon fibre of example 1 of the present invention preparation.
Fig. 3 is the stereoscan photograph (2) of the screw carbon fibre of example 1 of the present invention preparation.
Detailed description of the invention
Below in conjunction with specific embodiment, technical scheme of the present invention is further described specifically.
Embodiment 1:
1) carbon fiber knit body is put into tube furnace heat-treating under ar gas environment, argon flow amount is 300sccm, and heat treatment temperature is 800 DEG C, and the processing time is 60min;
2) by the mol ratio 1:1 of iron and nickel, ferric nitrate and nickel nitrate are joined in ethanol, the ferric nitrate of preparation 0.0125mol/L and nickel nitrate solution;
3) the carbon fiber knit body of step 1) process is put into step 2) solution in flood 300s, after taking-up, be placed in the dry 2h of drying box of 80 DEG C, put it in quartz boat, and be placed in the flat-temperature zone of quartz ampoule, under argon shield, be warming up to 400 DEG C by room temperature 20-25 DEG C, calcining at constant temperature 1h with heating rate 10 DEG C/min, obtain the carbon fiber knit body that load has catalyst;
4) the carbon fiber knit body of catalyst the load of step 3) gained is had to be warming up to 500 DEG C with heating rate 10 DEG C/min under argon shield, be that 300sccm passes into hydrogen and reduces in crystal reaction tube with flow, recovery time is at 60min, then under argon shield, temperature is elevated to 800 DEG C, argon gas is passed in reaction tube, hydrogen, hydrogen sulfide, acetylene reacts, wherein, argon gas, hydrogen, hydrogen sulfide, acetylene by volume flow-rate ratio is 75sccm:250sccm:50sccm:65sccm, reaction time is 30min, room temperature 20-25 DEG C is dropped in argon shield after reaction terminates, take out product.
Fig. 1 is the carbon fiber knit swept-volume electron microscopic picture that growth has coiled carbon fibers, can obtain having grown rear carbon fiber knit body and become coarse from picture; Fig. 2 is the scanning electron microscopic picture of gained coiled carbon fibers, be grown and have spiral helicine carbon fiber, and the purity of coiled carbon fibers is higher by Tu Ke get on carbon fiber knit body; Fig. 3 shows the scanning electron microscopic picture of gained coiled carbon fibers, can find out that coiled carbon fibers has two kinds of different-shapes, and a kind of fiber is comparatively thick and pitch is comparatively large, and another kind of fiber is comparatively thin and pitch is less.
Embodiment 2:
1) carbon fiber knit body is put into tube furnace heat-treating under ar gas environment, argon flow amount is 300sccm, and heat treatment temperature is 800 DEG C, and the processing time is 60min;
2) by the mol ratio 1:1 of iron and nickel, ferric nitrate and nickel nitrate are joined in ethanol, the ferric nitrate of preparation 0.025mol/L and nickel nitrate solution;
3) the carbon fiber knit body of step 1) process is put into step 2) solution in flood 300s, after taking-up, be placed in the dry 2h of drying box of 80 DEG C, put it in quartz boat, and be placed in the flat-temperature zone of quartz ampoule, under argon shield, be warming up to 400 DEG C by room temperature 20-25 DEG C, calcining at constant temperature 1h with heating rate 10 DEG C/min, obtain the carbon fiber knit body that load has catalyst;
4) the carbon fiber knit body of catalyst the load of step 3) gained is had to be warming up to 500 DEG C with heating rate 10 DEG C/min under argon shield, be that 300sccm passes into hydrogen and reduces in crystal reaction tube with flow, recovery time is at 60min, then under argon shield, temperature is elevated to 800 DEG C, argon gas is passed in reaction tube, hydrogen, hydrogen sulfide, acetylene reacts, wherein, argon gas, hydrogen, hydrogen sulfide, acetylene by volume flow-rate ratio is 75sccm:250sccm:50sccm, 65sccm, reaction time is 30min, room temperature 20-25 DEG C is dropped in argon shield after reaction terminates, obtain product.
Embodiment 3:
1) carbon fiber knit body is put into tube furnace heat-treating under ar gas environment, argon flow amount is 300sccm, and heat treatment temperature is 800 DEG C, and the processing time is 60min;
2) by the mol ratio 1:1 of iron and nickel, ferric nitrate and nickel nitrate are joined in ethanol, the ferric nitrate of preparation 0.05mol/L and nickel nitrate solution;
3) the carbon fiber knit body of step 1) process is put into step 2) solution in flood 300s, after taking-up, be placed in the dry 2h of drying box of 80 DEG C, put it in quartz boat, and be placed in the flat-temperature zone of quartz ampoule, under argon shield, be warming up to 400 DEG C by room temperature 20-25 DEG C, calcining at constant temperature 1h with heating rate 10 DEG C/min, obtain the carbon fiber knit body that load has catalyst;
4) the carbon fiber knit body of catalyst the load of step 3) gained is had to be warming up to 500 DEG C with heating rate 10 DEG C/min under argon shield, be that 300sccm passes into hydrogen and reduces in crystal reaction tube with flow, recovery time is at 60min, then under argon shield, temperature is elevated to 800 DEG C, argon gas is passed in reaction tube, hydrogen, hydrogen sulfide, acetylene reacts, wherein, argon gas, hydrogen, hydrogen sulfide, acetylene by volume flow-rate ratio is 75sccm:250sccm:50sccm, 65sccm, reaction time is 30min, room temperature 20-25 DEG C is dropped in argon shield after reaction terminates, obtain product.
Embodiment 4:
1) carbon fiber knit body is put into tube furnace heat-treating under ar gas environment, argon flow amount is 300sccm, and heat treatment temperature is 800 DEG C, and the processing time is 60min;
2) by the mol ratio 1:1 of iron and nickel, ferric nitrate and nickel nitrate are joined in ethanol, the ferric nitrate of preparation 0.075mol/L and nickel nitrate solution;
3) the carbon fiber knit body of step 1) process is put into step 2) solution in flood 300s, after taking-up, be placed in the dry 2h of drying box of 80 DEG C, put it in quartz boat, and be placed in the flat-temperature zone of quartz ampoule, under argon shield, be warming up to 400 DEG C by room temperature 20-25 DEG C, calcining at constant temperature 1h with heating rate 10 DEG C/min, obtain the carbon fiber knit body that load has catalyst;
4) the carbon fiber knit body of catalyst the load of step 3) gained is had to be warming up to 500 DEG C with heating rate 10 DEG C/min under argon shield, be that 300sccm passes into hydrogen and reduces in crystal reaction tube with flow, recovery time is at 60min, then under argon shield, temperature is elevated to 800 DEG C, argon gas is passed in reaction tube, hydrogen, hydrogen sulfide, acetylene reacts, wherein, argon gas, hydrogen, hydrogen sulfide, acetylene by volume flow-rate ratio is 75sccm:250sccm:50sccm, 65sccm, reaction time is 30min, room temperature 20-25 DEG C is dropped in argon shield after reaction terminates, obtain product.
Embodiment 5:
1) carbon fiber knit body is put into tube furnace heat-treating under ar gas environment, argon flow amount is 300sccm, and heat treatment temperature is 800 DEG C, and the processing time is 60min;
2) by the mol ratio 1:1 of iron and nickel, ferric nitrate and nickel nitrate are joined in ethanol, the ferric nitrate of preparation 0.1mol/L and nickel nitrate solution;
3) the carbon fiber knit body of step 1) process is put into step 2) solution in flood 300s, after taking-up, be placed in the dry 2h of drying box of 80 DEG C, put it in quartz boat, and be placed in the flat-temperature zone of quartz ampoule, under argon shield, be warming up to 400 DEG C by room temperature 20-25 DEG C, calcining at constant temperature 1h with heating rate 10 DEG C/min, obtain the carbon fiber knit body that load has catalyst;
4) the carbon fiber knit body of catalyst the load of step 3) gained is had to be warming up to 500 DEG C with heating rate 10 DEG C/min under argon shield, be that 300sccm passes into hydrogen and reduces in crystal reaction tube with flow, recovery time is at 60min, then under argon shield, temperature is elevated to 800 DEG C, argon gas is passed in reaction tube, hydrogen, hydrogen sulfide, acetylene reacts, wherein, argon gas, hydrogen, hydrogen sulfide, acetylene by volume flow-rate ratio is 75sccm:250sccm:50sccm, 65sccm, reaction time is 30min, room temperature 20-25 DEG C is dropped in argon shield after reaction terminates, obtain product.
Embodiment 6:
1) carbon fiber knit body is put into tube furnace heat-treating under ar gas environment, argon flow amount is 300sccm, and heat treatment temperature is 800 DEG C, and the processing time is 60min;
2) by the mol ratio 1:1 of iron and nickel, ferric nitrate and nickel nitrate are joined in ethanol, the ferric nitrate of preparation 0.05mol/L and nickel nitrate solution;
3) the carbon fiber knit body of step 1) process is put into step 2) solution in flood 100s, after taking-up, be placed in the dry 1.5h of drying box of 70 DEG C, put it in quartz boat, and be placed in the flat-temperature zone of quartz ampoule, under argon shield, be warming up to 350 DEG C by room temperature 20-25 DEG C, calcining at constant temperature 1.5h with heating rate 10 DEG C/min, obtain the carbon fiber knit body that load has catalyst;
4) the carbon fiber knit body of catalyst the load of step 3) gained is had to be warming up to 500 DEG C with heating rate 10 DEG C/min under argon shield, be that 150sccm passes into hydrogen and reduces in crystal reaction tube with flow, recovery time is 50min, then under argon shield, temperature is elevated to 780 DEG C, when being elevated to reaction temperature, argon gas is passed in reaction tube, hydrogen, hydrogen sulfide, acetylene reacts, wherein, argon gas, hydrogen, hydrogen sulfide, acetylene by volume flow-rate ratio is 70sccm:150sccm:40sccm:50sccm, reaction time is 20-min, room temperature 20-25 DEG C is dropped in argon shield after reaction terminates, obtain growth on carbon fiber knit body and have screw carbon fibre.
Embodiment 7:
1) carbon fiber knit body is put into tube furnace heat-treating under ar gas environment, argon flow amount is 300sccm, and heat treatment temperature is 800 DEG C, and the processing time is 60min;
2) by the mol ratio 1:1 of iron and nickel, ferric nitrate and nickel nitrate are joined in ethanol, the ferric nitrate of preparation 0.075mol/L and nickel nitrate solution;
3) the carbon fiber knit body of step 1) process is put into step 2) solution in flood 300s, after taking-up, be placed in the dry 4h of drying box of 90 DEG C, put it in quartz boat, and be placed in the flat-temperature zone of quartz ampoule, under argon shield, be warming up to 450 DEG C by room temperature 20-25 DEG C, calcining at constant temperature 3h with heating rate 10 DEG C/min, obtain the carbon fiber knit body that load has catalyst;
4) the carbon fiber knit body of catalyst the load of step 3) gained is had to be warming up to 600 DEG C with heating rate 10 DEG C/min under argon shield, be that 250sccm passes into hydrogen and reduces in crystal reaction tube with flow, recovery time is 100min, then under argon shield, temperature is elevated to 800 DEG C, when being elevated to reaction temperature, argon gas is passed in reaction tube, hydrogen, hydrogen sulfide, acetylene reacts, wherein, argon gas, hydrogen, hydrogen sulfide, acetylene by volume flow-rate ratio is 200sccm:300sccm:80sccm:90sccm, reaction time is 60min, room temperature 20-25 DEG C is dropped in argon shield after reaction terminates, obtain growth on carbon fiber knit body and have screw carbon fibre.
Above to invention has been exemplary description; should be noted that; when not departing from core of the present invention, any simple distortion, amendment or other those skilled in the art can not spend the equivalent replacement of creative work all to fall into protection scope of the present invention.
Claims (5)
1. the method for direct growth screw carbon fibre on carbon fiber knit body, is characterized in that, carry out according to following step:
1) carbon fiber knit body is put into the glue that the attachment of removing carbon fiber surface heat-treated by tube furnace under ar gas environment, argon flow amount is 50-500sccm, heat treatment temperature is 500-1000 DEG C, and the processing time is 10-100min, the carbon fiber knit body handled well is stayed do for subsequent use;
2) by the mol ratio 1:(1-5 of iron and nickel), join in ethanol by ferric nitrate and nickel nitrate, the ferric nitrate of preparation 0.01-0.1mol/L and nickel nitrate solution, the ultrasonic Solution Dispersion that makes is even;
3) the carbon fiber knit body of step 1) process is put into step 2) solution in flood 10-300s, after taking-up, be placed in the dry 1-5h of drying box of 60-100 DEG C, put it in quartz boat, and be placed in the flat-temperature zone of quartz ampoule, under argon shield, be warming up to 300-500 DEG C by room temperature 20-25 DEG C, calcining at constant temperature 1-3h with heating rate 10 DEG C/min, obtain the carbon fiber knit body that load has catalyst;
4) the carbon fiber knit body of catalyst the load of step 3) gained is had to be warming up to 500-600 DEG C with heating rate 10 DEG C/min under argon shield, be that 100-300sccm passes into hydrogen and reduces in crystal reaction tube with flow, recovery time is 30-150min, then under argon shield, temperature is elevated to 750-850 DEG C, when being elevated to reaction temperature, argon gas is passed in reaction tube, hydrogen, hydrogen sulfide, acetylene reacts, wherein, argon gas, hydrogen, hydrogen sulfide, acetylene by volume flow-rate ratio is (50-300sccm): (30-300sccm): (10-100sccm): (10-100sccm), reaction time is 10-100min, room temperature 20-25 DEG C is dropped in argon shield after reaction terminates, obtain growth on carbon fiber knit body and have screw carbon fibre.
2. the method for direct growth screw carbon fibre on a kind of carbon fiber knit body according to claim 1, it is characterized in that, in described step 1), carbon fiber knit body is put into the glue that the attachment of removing carbon fiber surface heat-treated by tube furnace under ar gas environment, argon flow amount is 100-400sccm, heat treatment temperature is 700-900 DEG C, and the processing time is 40-80min.
3. the method for direct growth screw carbon fibre on a kind of carbon fiber knit body according to claim 1, it is characterized in that, in described step 2) in, mol ratio 1:(1-5 by iron and nickel), ferric nitrate and nickel nitrate are joined in ethanol, the ferric nitrate of preparation 0.0125-0.075mol/L and nickel nitrate solution.
4. the method for direct growth screw carbon fibre on a kind of carbon fiber knit body according to claim 1; it is characterized in that; in described step 3); the carbon fiber knit body of step 1) process is put into step 2) solution in flood 100-300s; after taking-up; be placed in the dry 1.5-4h of drying box of 70-90 DEG C; put it in quartz boat; and be placed in the flat-temperature zone of quartz ampoule; 350-450 DEG C is warming up to heating rate 10 DEG C/min by room temperature 20-25 DEG C under argon shield; calcining at constant temperature 1.5-3h, obtains the carbon fiber knit body that load has catalyst.
5. the method for direct growth screw carbon fibre on a kind of carbon fiber knit body according to claim 1, it is characterized in that, in described step 4), the carbon fiber knit body of catalyst the load of step 3) gained is had to be warming up to 500-600 DEG C with heating rate 10 DEG C/min under argon shield, take flow as 150-250sccm, in crystal reaction tube, pass into hydrogen reduce, recovery time is 50-100min, then under argon shield, temperature is elevated to 780-800 DEG C, when being elevated to reaction temperature, argon gas is passed in reaction tube, hydrogen, hydrogen sulfide, acetylene reacts, wherein, argon gas, hydrogen, hydrogen sulfide, acetylene by volume flow-rate ratio is (70-200sccm): (150-300sccm): (40-80sccm): (50-90sccm), reaction time is 20-60min, room temperature 20-25 DEG C is dropped in argon shield after reaction terminates, obtain growth on carbon fiber knit body and have screw carbon fibre.
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| CN201310636425.7A CN104674540B (en) | 2013-12-02 | A kind of method of direct growth screw carbon fibre on carbon fiber knitted body |
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| CN201310636425.7A CN104674540B (en) | 2013-12-02 | A kind of method of direct growth screw carbon fibre on carbon fiber knitted body |
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| CN104674540A true CN104674540A (en) | 2015-06-03 |
| CN104674540B CN104674540B (en) | 2016-11-30 |
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| CN105645962A (en) * | 2016-01-06 | 2016-06-08 | 天津大学 | Preparation method of high-temperature-resistant oxidation-resistant heat-conducting carbon fiber/silicon carbide composite material |
| CN105948776A (en) * | 2016-04-28 | 2016-09-21 | 天津大学 | Preparation method of array carbon nanotube/carbon fiber/silicon carbide thermally conductive composite material |
| CN106045549A (en) * | 2016-05-30 | 2016-10-26 | 西北工业大学 | Method using sol-gel method to synthesize spiral ZrC whiskers in in-situ manner |
| CN113480833A (en) * | 2021-07-30 | 2021-10-08 | 宁波石墨烯创新中心有限公司 | Preparation method of graphene/spiral carbon fiber/epoxy resin composite material |
| CN115196987A (en) * | 2022-06-02 | 2022-10-18 | 航天材料及工艺研究所 | Carbon nano tube/fiber multi-scale reinforced ceramic matrix composite material and preparation method thereof |
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| CN102320590A (en) * | 2011-06-22 | 2012-01-18 | 天津大学 | Method for directly growing single and double-spiral nano carbon fibers on copper matrix |
| CN102354612A (en) * | 2011-09-06 | 2012-02-15 | 天津大学 | Array carbon nano-tube/carbon fiber-based flexible composite electrode material and preparation method thereof |
Patent Citations (2)
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| CN102320590A (en) * | 2011-06-22 | 2012-01-18 | 天津大学 | Method for directly growing single and double-spiral nano carbon fibers on copper matrix |
| CN102354612A (en) * | 2011-09-06 | 2012-02-15 | 天津大学 | Array carbon nano-tube/carbon fiber-based flexible composite electrode material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645962A (en) * | 2016-01-06 | 2016-06-08 | 天津大学 | Preparation method of high-temperature-resistant oxidation-resistant heat-conducting carbon fiber/silicon carbide composite material |
| CN105645962B (en) * | 2016-01-06 | 2018-07-13 | 天津大学 | A kind of preparation method of fire-resistant oxidation resistant heat conduction carbon fiber/composite material of silicon carbide |
| CN105948776A (en) * | 2016-04-28 | 2016-09-21 | 天津大学 | Preparation method of array carbon nanotube/carbon fiber/silicon carbide thermally conductive composite material |
| CN105948776B (en) * | 2016-04-28 | 2018-08-28 | 天津大学 | A kind of preparation method of array carbon nano-tube/carbon fiber/silicon carbide heat-conductive composite material |
| CN106045549A (en) * | 2016-05-30 | 2016-10-26 | 西北工业大学 | Method using sol-gel method to synthesize spiral ZrC whiskers in in-situ manner |
| CN106045549B (en) * | 2016-05-30 | 2018-10-16 | 西北工业大学 | A method of using sol-gal process fabricated in situ helical form ZrC whiskers |
| CN113480833A (en) * | 2021-07-30 | 2021-10-08 | 宁波石墨烯创新中心有限公司 | Preparation method of graphene/spiral carbon fiber/epoxy resin composite material |
| CN113480833B (en) * | 2021-07-30 | 2023-08-22 | 宁波石墨烯创新中心有限公司 | Preparation method of graphene/spiral carbon fiber/epoxy resin composite material |
| CN115196987A (en) * | 2022-06-02 | 2022-10-18 | 航天材料及工艺研究所 | Carbon nano tube/fiber multi-scale reinforced ceramic matrix composite material and preparation method thereof |
| CN115196987B (en) * | 2022-06-02 | 2023-09-29 | 航天材料及工艺研究所 | Carbon nano tube/fiber multi-scale reinforced ceramic matrix composite material and preparation method thereof |
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