CN107555994A - A kind of preparation method of high-absorbility Terahertz material - Google Patents
A kind of preparation method of high-absorbility Terahertz material Download PDFInfo
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- CN107555994A CN107555994A CN201710783903.5A CN201710783903A CN107555994A CN 107555994 A CN107555994 A CN 107555994A CN 201710783903 A CN201710783903 A CN 201710783903A CN 107555994 A CN107555994 A CN 107555994A
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Abstract
The present invention provides a kind of preparation method of high-absorbility Terahertz material, step 1：Choose graphene powder and carbon nanotube powder；Step 2：CNT and graphene are mixed in proportion, and mixed-powder is made；Step 3：Ultra-pure water wiring solution-forming is added into mixed-powder, adds 2g/L surfactants in the solution；Step 4：Ultrasonic vibration 25 minutes~30 minutes；Step 5：Centrifugation rotation is carried out, completes the preparation of CNT and graphene slurry；Step 6：Resin is added in CNT and graphene slurry；Step 7：Rotated using vacuum rotating machine, make resin dispersed in the slurry；Step 8：Slurry coated in above substrate；Step 9：It is put into high-temperature cabinet to be sintered, completes to prepare.Using such scheme, there is higher absorptivity to thz laser in wide frequency ranges, manufacture craft is simple, perfect heat-dissipating.
Description
Technical field
The invention belongs to Terahertz technical field of material, more particularly to a kind of high-absorbility Terahertz material
Preparation method.
Background technology
At present, use is required in Terahertz stealth material, terahertz detector making etc. to have thz laser
There is the material of high-absorbility.But existing absorbing material typically using multiple material by particular process fabrication, complex process,
Can only have in component frequency point to thz laser and absorb, it is impossible to have in 0.1THz~10THz to thz laser preferable
Absorption.
Therefore, the prior art is defective, it is necessary to improve.
The content of the invention
The technical problems to be solved by the invention are in view of the shortcomings of the prior art, there is provided a kind of high-absorbility Terahertz material
The preparation method of material.
Technical scheme is as follows：
A kind of preparation method of high-absorbility Terahertz material, comprises the following steps：
Step 1：Choose purity not less than 98%, length be less than 10 μm of graphene powder, choose purity not less than 95%,
Length is less than 20 μm of carbon nanotube powder；
Step 2：According to 7:1 ratio mixing CNT and graphene, is made mixed-powder；
Step 3：Ultra-pure water is added into mixed-powder, the solution that concentration is 80g/L~100g/L is made into, adds in the solution
Add 2g/L surfactants；
Step 4：Using ultrasonic cleaner, under conditions of supersonic frequency is 30kHz~40kHz, ultrasonic vibration 25 divides
Clock~30 minute；
Step 5：Using centrifuge when rotating speed is 10000rpm, centrifugation is carried out to the solution after ultrasonic vibration and rotates 2
Minute, CNT is clear liquid on solution lower floor, solution upper strata with graphene slurry sediment, and supernatant liquor is poured out, completed
The preparation of CNT and graphene slurry；
Step 6：Resin is added in CNT and graphene slurry, improves the ratio of the viscosity of slurry, slurry and resin
Example is 6:1；
Step 7：Using vacuum rotating machine when rotating speed is 6000rpm, CNT and the graphene of addition resin are starched
Material rotation 3 minutes~5 minutes, makes resin be dispersed in CNT and graphene slurry；
Step 8：The CNT containing resin and graphene slurry coated in above substrate；
Step 9：It is put into high-temperature cabinet to be sintered, completes the preparation of Terahertz material.
In above-mentioned steps 1, the CNT is single-walled carbon nanotube or multi-walled carbon nanotube.
In above-mentioned steps 3, the surfactant is cetyl trimethylammonium bromide or polyoxyethylene nonylphenol ether.
In above-mentioned steps 6, the resin is dimethyl silicone polymer.
In above-mentioned steps 8, painting method has magnetron sputtering, spraying or silk-screen printing.
Using such scheme, the thermal conductivity of Terahertz absorbing material is improved, so that absorbing material is to thz laser
Absorb evenly, be advantageous to radiate.In addition, by test, Terahertz material proposed by the present invention is in 0.1THz~30THz to too
The absorptivity of hertz laser is more than 99%, has higher absorptivity.
Brief description of the drawings
Fig. 1 is the inventive method flow chart.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
As shown in figure 1, the defects of in order to overcome prior art, the present invention proposes that one kind swashs in wide frequency ranges to Terahertz
Light has a material of higher absorption rate, and the inventive method step is as follows：
Step 1：Choose purity not less than 98%, length be less than 10 μm of graphene powder, choose purity not less than 95%,
Length is less than 20 μm of carbon nanotube powder, and the CNT is single-walled carbon nanotube or multi-walled carbon nanotube.
Step 2：According to 7:1 ratio mixing CNT and graphene, is made mixed-powder.
Step 3：Ultra-pure water is added into mixed-powder, the solution that concentration is 80g/L~100g/L is made into, adds in the solution
Add 2g/L surfactants, the surfactant is cetyl trimethylammonium bromide or polyoxyethylene nonylphenol ether.
Step 4：Using ultrasonic cleaner, under conditions of supersonic frequency is 30kHz~40kHz, ultrasonic vibration 25 divides
Clock~30 minute, in the presence of surfactant, with graphene dispersion in the solution, agglomeration disappears CNT, energy
Terahertz material is enough set to be evenly distributed.
Step 5：Using centrifuge when rotating speed is 10000rpm, centrifugation is carried out to the solution after ultrasonic vibration and rotates 2
Minute, CNT is clear liquid on solution lower floor, solution upper strata with graphene slurry sediment, and supernatant liquor is poured out, completed
The preparation of CNT and graphene slurry.
Step 6：Resin is added in CNT and graphene slurry, improves the ratio of the viscosity of slurry, slurry and resin
Example is 6:1, the resin is dimethyl silicone polymer.
Step 7：Using vacuum rotating machine when rotating speed is 6000rpm, CNT and the graphene of addition resin are starched
Material rotation 3 minutes~5 minutes, makes resin be dispersed in CNT and graphene slurry.
Step 8：The CNT containing resin and graphene slurry coated in above substrate, painting method has magnetic control to splash
Penetrate, spray, silk-screen printing etc..
Step 9：It is put into high-temperature cabinet to be sintered, completes the preparation of Terahertz material.
The present invention improves the thermal conductivity of Terahertz absorbing material by adding graphene in CNT, so that
Absorbing material absorbs evenly to thz laser, is advantageous to radiate.In addition, pass through test, Terahertz material proposed by the present invention
Expect to be more than 99% to the absorptivity of thz laser in 0.1THz~30THz.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (5)
1. a kind of preparation method of high-absorbility Terahertz material, it is characterised in that comprise the following steps：
Step 1：The graphene powder that purity is less than 10 μm not less than 98%, length is chosen, chooses purity not less than 95%, length
Carbon nanotube powder less than 20 μm；
Step 2：According to 7:1 ratio mixing CNT and graphene, is made mixed-powder；
Step 3：Ultra-pure water is added into mixed-powder, the solution that concentration is 80g/L~100g/L is made into, adds in the solution
2g/L surfactants；
Step 4：Using ultrasonic cleaner, under conditions of supersonic frequency is 30kHz~40kHz, ultrasonic vibration 25 minutes~
30 minutes；
Step 5：Using centrifuge when rotating speed is 10000rpm, centrifugation is carried out to the solution after ultrasonic vibration and is rotated 2 minutes,
CNT is clear liquid on solution lower floor, solution upper strata with graphene slurry sediment, and supernatant liquor is poured out, completes carbon nanometer
The preparation of pipe and graphene slurry；
Step 6：Resin is added in CNT and graphene slurry, improves the viscosity of slurry, the ratio of slurry and resin is
6:1；
Step 7：Using vacuum rotating machine when rotating speed is 6000rpm, CNT and the graphene slurry of addition resin are revolved
Turn 3 minutes~5 minutes, resin is dispersed in CNT and graphene slurry；
Step 8：The CNT containing resin and graphene slurry coated in above substrate；
Step 9：It is put into high-temperature cabinet to be sintered, completes the preparation of Terahertz material.
2. the preparation method of high-absorbility Terahertz material as claimed in claim 1, it is characterised in that in step 1, the carbon
Nanotube is single-walled carbon nanotube or multi-walled carbon nanotube.
3. the preparation method of high-absorbility Terahertz material as claimed in claim 1, it is characterised in that in step 3, the table
Face activating agent is cetyl trimethylammonium bromide or polyoxyethylene nonylphenol ether.
4. the preparation method of high-absorbility Terahertz material as claimed in claim 1, it is characterised in that in step 6, the tree
Fat is dimethyl silicone polymer.
5. the preparation method of high-absorbility Terahertz material as claimed in claim 1, it is characterised in that in step 8, coating side
Method has magnetron sputtering, spraying or silk-screen printing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710783903.5A CN107555994B (en) | 2017-09-04 | 2017-09-04 | Preparation method of high-absorptivity terahertz material |
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| CN201710783903.5A CN107555994B (en) | 2017-09-04 | 2017-09-04 | Preparation method of high-absorptivity terahertz material |
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| CN107555994A true CN107555994A (en) | 2018-01-09 |
| CN107555994B CN107555994B (en) | 2020-05-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110128121A (en) * | 2019-05-14 | 2019-08-16 | 江苏中兴国邦环保科技有限公司 | A kind of preparation method of energy-saving active Terahertz composite material |
| CN111551516A (en) * | 2020-05-14 | 2020-08-18 | 南京邮电大学 | Efficient visual terahertz detector and preparation and test methods thereof |
| CN113451864A (en) * | 2021-06-25 | 2021-09-28 | 泉州慈光科技有限公司 | Terahertz emitter and manufacturing method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417610A (en) * | 2011-07-13 | 2012-04-18 | 青岛科技大学 | Graphene/carbon nanotube hybrid polymer composite material |
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2017
- 2017-09-04 CN CN201710783903.5A patent/CN107555994B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417610A (en) * | 2011-07-13 | 2012-04-18 | 青岛科技大学 | Graphene/carbon nanotube hybrid polymer composite material |
Non-Patent Citations (1)
| Title |
|---|
| 韩建龙等: "材料在太赫兹波段吸收性能的研究进展", 《兵器材料科学与工程》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110128121A (en) * | 2019-05-14 | 2019-08-16 | 江苏中兴国邦环保科技有限公司 | A kind of preparation method of energy-saving active Terahertz composite material |
| CN111551516A (en) * | 2020-05-14 | 2020-08-18 | 南京邮电大学 | Efficient visual terahertz detector and preparation and test methods thereof |
| CN111551516B (en) * | 2020-05-14 | 2023-03-14 | 南京邮电大学 | Efficient visual terahertz detector and preparation and test methods thereof |
| CN113451864A (en) * | 2021-06-25 | 2021-09-28 | 泉州慈光科技有限公司 | Terahertz emitter and manufacturing method thereof |
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| CN107555994B (en) | 2020-05-15 |
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