CN117117516A - Preparation method of organic/inorganic hybrid sub-terahertz wave-absorbing film - Google Patents
Preparation method of organic/inorganic hybrid sub-terahertz wave-absorbing film Download PDFInfo
- Publication number
- CN117117516A CN117117516A CN202310644938.6A CN202310644938A CN117117516A CN 117117516 A CN117117516 A CN 117117516A CN 202310644938 A CN202310644938 A CN 202310644938A CN 117117516 A CN117117516 A CN 117117516A
- Authority
- CN
- China
- Prior art keywords
- film
- organic
- inorganic hybrid
- terahertz wave
- basic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 238000010521 absorption reaction Methods 0.000 claims abstract description 16
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims abstract description 10
- 239000004831 Hot glue Substances 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 238000012546 transfer Methods 0.000 claims abstract description 8
- 229920000642 polymer Polymers 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 230000002378 acidificating effect Effects 0.000 claims abstract description 4
- 238000007731 hot pressing Methods 0.000 claims abstract description 3
- 239000000843 powder Substances 0.000 claims description 14
- 229920003063 hydroxymethyl cellulose Polymers 0.000 claims description 11
- 229940031574 hydroxymethyl cellulose Drugs 0.000 claims description 11
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 10
- 229920000609 methyl cellulose Polymers 0.000 claims description 9
- 239000001923 methylcellulose Substances 0.000 claims description 9
- 235000010981 methylcellulose Nutrition 0.000 claims description 9
- 239000000243 solution Substances 0.000 claims description 9
- 239000002904 solvent Substances 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 8
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 8
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 8
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 8
- 238000001328 terahertz time-domain spectroscopy Methods 0.000 claims description 8
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims description 7
- 238000001704 evaporation Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 238000007873 sieving Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 5
- 229940116318 copper carbonate Drugs 0.000 claims description 5
- GEZOTWYUIKXWOA-UHFFFAOYSA-L copper;carbonate Chemical compound [Cu+2].[O-]C([O-])=O GEZOTWYUIKXWOA-UHFFFAOYSA-L 0.000 claims description 5
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 5
- 239000001095 magnesium carbonate Substances 0.000 claims description 5
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 5
- UOURRHZRLGCVDA-UHFFFAOYSA-D pentazinc;dicarbonate;hexahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Zn+2].[Zn+2].[Zn+2].[Zn+2].[Zn+2].[O-]C([O-])=O.[O-]C([O-])=O UOURRHZRLGCVDA-UHFFFAOYSA-D 0.000 claims description 5
- 229920000172 poly(styrenesulfonic acid) Polymers 0.000 claims description 5
- 229940005642 polystyrene sulfonic acid Drugs 0.000 claims description 5
- 229920002125 Sokalan® Polymers 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 4
- 239000004584 polyacrylic acid Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 229920002302 Nylon 6,6 Polymers 0.000 claims description 3
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 229940036348 bismuth carbonate Drugs 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- GMZOPRQQINFLPQ-UHFFFAOYSA-H dibismuth;tricarbonate Chemical compound [Bi+3].[Bi+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O GMZOPRQQINFLPQ-UHFFFAOYSA-H 0.000 claims description 2
- 238000013329 compounding Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 2
- 238000010669 acid-base reaction Methods 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 239000004205 dimethyl polysiloxane Substances 0.000 description 6
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 6
- 229910021389 graphene Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 description 6
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 description 6
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 6
- 239000006260 foam Substances 0.000 description 4
- 229910000014 Bismuth subcarbonate Inorganic materials 0.000 description 3
- MGLUJXPJRXTKJM-UHFFFAOYSA-L bismuth subcarbonate Chemical compound O=[Bi]OC(=O)O[Bi]=O MGLUJXPJRXTKJM-UHFFFAOYSA-L 0.000 description 3
- 229940036358 bismuth subcarbonate Drugs 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention belongs to the technical field of B5G, and particularly relates to a preparation method of an organic/inorganic hybrid sub-terahertz wave-absorbing film. The preparation method provided by the invention comprises the steps of coating the basic carbonate in a slow-release film, dispersing the slow-release film and an acidic polymer in a hot melt adhesive, stirring, then placing the mixture in a thermal transfer printer, hot-pressing the mixture into a film, and placing the film at room temperature for a period of time to obtain the organic/inorganic hybrid sub-terahertz wave-absorbing film. The invention has the following advantages: (1) The absorption efficiency of the sub-terahertz frequency band of the B5G technology is more than 40dB, and the reflection efficiency is less than 0.01dB, so that the coupling interference of the reflected electromagnetic wave is avoided; (2) The thickness of the film is adjustable, and the film is suitable for electromagnetic compatibility of limited space of a B5G circuit board; (3) The acid-base reaction rate is controlled by using the slow-release film, water is fixed in the film, resonance or relaxation is generated under the irradiation of sub-terahertz waves, and the effects of strong wave absorption and low reflection are achieved.
Description
Technical Field
The invention belongs to the technical field of B5G, and particularly relates to a preparation method of an organic/inorganic hybrid sub-terahertz wave-absorbing film.
Background
The 5G is expanded to the field of the Internet of things from the mobile Internet, the new era of industrial Internet is opened, successful commercial use of the 5G becomes the basis of B5G (Beyond 5G) development, but the performance requirement of part of application scenes exceeds the 5G capability.
The national institute of standards indicates that B5G refers to future generations of mobile wireless communication systems, and the promise of these next generation systems is to realize pioneering mobile applications requiring high quality low-latency vision, touch and audio presence in addition to high capacity (over 1000 times) and connectivity (billions of users and machines). Next generation mobile communications have begun to utilize the available frequencies of millimeter waves (0.03-0.3 THz), at which high power transmitters can use tens to hundreds of antennas (commonly referred to as massive MIMO antennas) to recover high propagation losses. The greater the number of antennas, the higher the transmit power that can be achieved by combining the individual powers (also referred to as beamforming) of each antenna. The industry has explored the use of massive MIMO antenna arrays to increase simultaneous transmission capacity; millimeter wave spectrum to mitigate spectral compression in the current frequency band; and ultra dense networks to allow short-range, high-speed data transmission (https:// www.nist.gov/programs-projects/5 g-beyond).
B5G research is mainly focused on millimeter wave (0.03-0.3 THz) frequency bands, and overlaps with sub-terahertz frequency bands (0.1-0.3 THz) and 6G frequency bands (0.1-3.0 THz).
Titova LV et al, the American Worcester institute of technology, prepared flexible MXene (Ti 3 C 2 T y ) Films [ Nano Letters, 2020, 20, 636-643.]Has extremely high conductivity and terahertz electromagnetic shielding effect, and the shielding effect can be modulated, ti 3 C 2 T y Compatibility with various substrates has led to widespread use of such two-dimensional materials in terahertz technology and electromagnetic shielding. Zeranska-Chudek K et al, university of Poland Huasha, studied the terahertz shielding properties of 0.7mm thick PDMS, PDMS/graphene (1 wt%), PDMS/MXene (1 wt%) using terahertz time-domain spectroscopy [ Journal of Applied Polymer Science, 2021,138:e 49962 ]]The shielding efficiency of PDMS is about 6dB, PDMS/MXene is about 11dB, PDMS/graphene is 21.9-54.9 dB, and the dielectric loss of the composite material is low. Balandin AA et al, university of California Hede division, U.S. studied the electromagnetic shielding properties of filled graphene epoxy composites [ ACS Applied Materials ]&Interfaces, 2020, 12: 28635-28644]When the graphene loading is 8wt% in the frequency range of 0.22-0.30 THz, the resistivity of the epoxy resin composite film with the thickness of 1mm is 1.51X10 5 Omega cm, the maximum shielding effectiveness is 70dB, but the corresponding frequency band is narrower and the frequency is lower. Professor Tan Yongwen, hunan university, et al, willMXene was mixed with graphene oxide and ion diffusion induced gelation was used to prepare 85 μm thick MXene foam [ ACS Nano, 2020, 14:2109-2117 ]]The MXene sheets are crosslinked by polyvalent metal ions and graphene oxide to form a directional porous structure, the foam conductivity is 5671.8S/m, the maximum electromagnetic shielding effectiveness in a 0.2-0.3 THz frequency band is 51dB, and a new thought is provided for developing high-performance terahertz shielding materials. Polyurethane foam was impregnated in Ti as taught by university of electronics and technology Wen Qiye, shouchi professor and the like 3 C 2 T x In solution, 10mm thick MXene Sponge Foam (MSF) was prepared [ Advanced Optical Materials, 2020, 8: 2001120 ]]The absorption rate at 0.3THz exceeds 99.99% (shielding effectiveness)>40 dB), the foam has potential application in the fields of radar stealth, electromagnetic shielding, B5G communication and the like.
In summary, the current sub-terahertz wave absorbing materials are mostly conductive particle filled type materials, and the insulating particle filled type wave absorbing materials are relatively few. The insulating film material can realize the integration of encapsulation and wave absorption in the B5G electronic device, saves the space on a circuit board, improves the integration level of the circuit board and has great application value.
Disclosure of Invention
The invention aims to provide a preparation method of an organic/inorganic hybrid sub-terahertz wave-absorbing film.
The invention provides a preparation method of an organic/inorganic hybrid sub-terahertz wave absorbing film, which is characterized by mixing 1-3 g of basic carbonate, 10-15 g of substituted methylcellulose and 50-100 ml of ethanol water solution, stirring for 30-45 minutes, heating, evaporating to remove a solvent, crushing a solid, and sieving to obtain 800-1000 mesh methylcellulose coated basic carbonate powder; dispersing 3-5 g of methylcellulose coated basic carbonate powder and 1-3 g of acid polymer into 50-80 g of hot melt adhesive, stirring, then placing into a thermal transfer printer, hot pressing at 120-150 ℃ to form a film, and cooling at room temperature for 6-12 hours to obtain the organic/inorganic hybrid sub-terahertz wave absorbing film.
Wherein the basic carbonate is any one of basic copper carbonate, basic calcium carbonate, basic zinc carbonate, basic magnesium carbonate or basic bismuth carbonate.
Wherein the substituted methylcellulose is any one of hydroxymethyl cellulose and hydroxypropyl methylcellulose.
Wherein the solute of the ethanol aqueous solution is ethanol, the solvent is water, and the mass percentage concentration is 20% -30%.
Wherein the acidic polymer is any one of polyacrylic acid or polystyrene sulfonic acid.
Wherein the hot melt adhesive is any one of ethylene-vinyl acetate copolymer, polyurethane, polyhexamethylene adipamide or polyethylene glycol succinate.
The test of the wave absorbing efficiency of the organic/inorganic hybrid sub-terahertz wave absorbing film sample is realized through a terahertz time-domain spectroscopy system, and the test wavelength is 0.1-0.3 THz; the transmission mode and the reflection mode are respectively adopted to detect the total shielding effectiveness and the reflection effectiveness of the film sample, and the absorption effectiveness is the total shielding effectiveness minus the reflection effectiveness. The absorption efficiency of the film in the frequency range of 0.1-0.3 THz is 43.2-53.1 dB, and the reflection efficiency is 0.007-0.01 dB; the thickness of the film is measured to be 0.01-0.05 mm by a film thickness meter.
Therefore, the invention has the following advantages:
(1) The absorption efficiency in the B5G sub-terahertz frequency band (0.1-0.3 THz) is more than 40dB, and the method can be used for electromagnetic compatibility of civil electronic elements and circuit boards (the civil standard is more than or equal to 30 dB).
(2) The reflection efficiency is less than or equal to 0.01dB, the coupling interference of the reflected electromagnetic waves can be greatly reduced, and the self-damage of the radiation source is reduced from the source.
(3) The method has the advantages that the substituted methyl cellulose is used as a slow-release film, the contact reaction of the basic carbonate and the acidic polymer is controlled, the water content of the wave-absorbing film is kept, under the sub-terahertz wave radiation, the effect similar to a microwave oven is achieved, the water generates resonance relaxation, electromagnetic wave energy is converted into heat energy, the absorption efficiency is greatly improved, and the reflection efficiency is reduced.
Drawings
FIG. 1 is a scanning electron microscope photograph of an organic/inorganic hybrid sub-terahertz wave-absorbing film.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent.
Example 1
Mixing 1g of basic copper carbonate, 10g of hydroxymethyl cellulose and 50ml of ethanol water solution with the mass percentage concentration of 30%, stirring for 30 minutes, heating, evaporating the solvent, crushing the solid, and sieving to obtain 800-mesh hydroxymethyl cellulose coated basic copper carbonate powder; 3g of hydroxymethyl cellulose coated basic copper carbonate powder and 1g of polyacrylic acid are dispersed into 50g of ethylene-vinyl acetate copolymer hot melt adhesive, stirred, then placed into a thermal transfer printer, hot pressed to form a film at 120 ℃, cooled for 6 hours at room temperature, and the organic/inorganic hybrid sub-terahertz wave absorbing film is obtained. Cutting a film sample into a plane size of 1 cm multiplied by 1 cm, measuring the total shielding effectiveness of the film sample in a 0.1-0.3 THz frequency band to be 43.21-51.32 dB by using a terahertz time-domain spectroscopy system, measuring the reflection effectiveness to be 0.007-0.009 dB, and calculating to obtain the absorption effectiveness to be 43.203-51.311dB; the film thickness was measured to be 0.01mm by a film thickness meter.
Example 2
Mixing 3g of basic calcium carbonate, 15g of hydroxypropyl methylcellulose and 100ml of ethanol water solution with the mass percent concentration of 20%, stirring for 45 minutes, heating, evaporating to remove solvent, crushing solid, and sieving to obtain 1000-mesh hydroxypropyl methylcellulose coated basic calcium carbonate powder; 5g of hydroxypropyl methyl cellulose coated basic calcium carbonate powder and 3g of polystyrene sulfonic acid are dispersed into 80g of polyurethane hot melt adhesive, stirred, then placed into a thermal transfer printer, hot pressed at 150 ℃ to form a film, cooled at room temperature for 12 hours, and the organic/inorganic hybrid sub-terahertz wave absorbing film is obtained. Cutting a film sample into a plane size of 1 cm multiplied by 1 cm, measuring the total shielding effectiveness of the film sample in a 0.1-0.3 THz frequency band to be 45.63-53.10 dB by using a terahertz time-domain spectroscopy system, measuring the reflection effectiveness to be 0.009-0.01 dB, and calculating to obtain the absorption effectiveness to be 45.621-53.09 dB; the film thickness was measured to be 0.05mm by a film thickness meter.
Example 3
Mixing 2g of basic zinc carbonate, 12g of hydroxymethyl cellulose and 80ml of ethanol water solution with the mass percent concentration of 25%, stirring for 40 minutes, heating, evaporating the solvent, crushing the solid, and sieving to obtain 900-mesh hydroxymethyl cellulose coated basic zinc carbonate powder; 4g of hydroxymethyl cellulose coated basic zinc carbonate powder and 2g of polyacrylic acid are dispersed into 60g of polyhexamethylene adipamide hot melt adhesive, stirred, then placed into a thermal transfer printer, hot pressed into a film at 140 ℃, cooled for 8 hours at room temperature, and the organic/inorganic hybrid sub-terahertz wave absorbing film is obtained. Cutting a film sample into a plane size of 1 cm multiplied by 1 cm, measuring the total shielding effectiveness of the film sample in a 0.1-0.3 THz frequency band to be 44.98-52.17 dB by using a terahertz time-domain spectroscopy system, measuring the reflection effectiveness to be 0.007-0.008 dB, and calculating to obtain the absorption effectiveness to be 44.973-51.162dB; the film thickness was measured to be 0.03mm by a film thickness meter.
Example 4
Mixing 2.5g of basic magnesium carbonate, 13g of hydroxypropyl methylcellulose and 70ml of ethanol water solution with the mass percent concentration of 20%, stirring for 35 minutes, heating, evaporating the solvent, crushing the solid, and sieving to obtain 800-mesh hydroxypropyl methylcellulose coated basic magnesium carbonate powder; 4.5g of hydroxypropyl methyl cellulose coated basic magnesium carbonate powder and 2.5g of polystyrene sulfonic acid are dispersed into 65g of polyethylene glycol succinate hot melt adhesive, stirred, then placed in a thermal transfer printer, hot pressed at 145 ℃ to form a film, cooled at room temperature for 7 hours, and the organic/inorganic hybrid sub-terahertz wave absorbing film is obtained. Cutting a film sample into a plane size of 1 cm multiplied by 1 cm, measuring the total shielding effectiveness of the film sample in a 0.1-0.3 THz frequency band to be 43.33-51.88 dB by using a terahertz time-domain spectroscopy system, measuring the reflection effectiveness to be 0.008-0.009 dB, and calculating to obtain the absorption effectiveness to be 43.322-51.871 dB; the film thickness was measured to be 0.04mm by a film thickness meter.
Example 5
Mixing 1.5g of bismuth subcarbonate, 14g of hydroxymethyl cellulose and 60ml of ethanol water solution with the mass percent concentration of 25%, stirring for 35 minutes, heating, evaporating the solvent, crushing the solid, and sieving to obtain 1000-mesh hydroxymethyl cellulose coated bismuth subcarbonate powder; 5g of hydroxymethyl cellulose coated bismuth subcarbonate powder and 1.5g of polystyrene sulfonic acid are dispersed into 70g of ethylene-vinyl acetate copolymer hot melt adhesive, stirred, then placed into a thermal transfer printer, hot pressed at 130 ℃ to form a film, cooled at room temperature for 8 hours, and the organic/inorganic hybrid sub-terahertz wave absorbing film is obtained. Cutting a film sample into a plane size of 1 cm multiplied by 1 cm, measuring the total shielding effectiveness of the film sample in a 0.1-0.3 THz frequency band to be 44.45-51.96 dB by using a terahertz time-domain spectroscopy system, measuring the reflection effectiveness to be 0.009-0.01 dB, and calculating to obtain the absorption effectiveness to be 44.441-51.95 dB; the film thickness was measured to be 0.02mm by a film thickness meter.
Claims (3)
1. The preparation method of the organic/inorganic hybrid sub-terahertz wave absorbing film is characterized by comprising the following specific steps of:
(1) Compounding: mixing 1-3 g of basic carbonate, 10-15 g of substituted methylcellulose and 50-100 ml of ethanol water solution, stirring for 30-45 minutes, heating, evaporating the solvent, crushing the solid, and sieving to obtain 800-1000 mesh methylcellulose coated basic carbonate powder; wherein the basic carbonate is any one of basic copper carbonate, basic calcium carbonate, basic zinc carbonate, basic magnesium carbonate or basic bismuth carbonate; wherein the substituted methyl cellulose is any one of hydroxymethyl cellulose or hydroxypropyl methyl cellulose; wherein the solute of the ethanol aqueous solution is ethanol, the solvent is water, and the mass percentage concentration is 20% -30%;
(2) Film forming: dispersing 3-5 g of 800-1000 mesh methylcellulose coated basic carbonate powder and 1-3 g of acid polymer into 50-80 g of hot melt adhesive, stirring, then placing into a thermal transfer printer, hot pressing at 120-150 ℃ to form a film, and cooling at room temperature for 6-12 hours to obtain an organic/inorganic hybrid sub-terahertz wave-absorbing film; wherein the acidic polymer is any one of polyacrylic acid or polystyrene sulfonic acid; wherein the hot melt adhesive is any one of ethylene-vinyl acetate copolymer, polyurethane, polyhexamethylene adipamide or polyethylene glycol succinate.
2. The method for preparing the organic/inorganic hybrid sub-terahertz wave absorbing film according to claim 1, wherein the absorption efficiency test of the organic/inorganic hybrid sub-terahertz wave absorbing film is realized through a terahertz time-domain spectroscopy system, and the test wavelength is 0.1-0.3 THz; two light paths of a transmission mode and a reflection mode are adopted respectively, the total shielding effectiveness and the reflection effectiveness are detected, and the absorption effectiveness is the total shielding effectiveness minus the reflection effectiveness.
3. The method for preparing the organic/inorganic hybrid sub-terahertz wave-absorbing film according to claim 1, wherein the absorption efficiency of the organic/inorganic hybrid sub-terahertz wave-absorbing film in the 0.1-0.3 thz frequency band is 43.2-53.1 db, and the reflection efficiency is 0.007-0.01 db; the thickness of the organic/inorganic hybrid sub-terahertz wave absorbing film is measured to be 0.01-0.05 mm by a film thickness meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310644938.6A CN117117516B (en) | 2023-06-02 | 2023-06-02 | Preparation method of organic/inorganic hybrid sub-terahertz wave-absorbing film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310644938.6A CN117117516B (en) | 2023-06-02 | 2023-06-02 | Preparation method of organic/inorganic hybrid sub-terahertz wave-absorbing film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117117516A true CN117117516A (en) | 2023-11-24 |
| CN117117516B CN117117516B (en) | 2024-02-20 |
Family
ID=88806237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310644938.6A Active CN117117516B (en) | 2023-06-02 | 2023-06-02 | Preparation method of organic/inorganic hybrid sub-terahertz wave-absorbing film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117117516B (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1185474A (en) * | 1967-01-02 | 1970-03-25 | British Insulated Callenders | Improvements in Electrical Apparatus Incorporating a Laminated Dielectric. |
| US3951899A (en) * | 1970-06-22 | 1976-04-20 | Ppg Industries, Inc. | Opaque, microcellular films from latex compositions, process and composition for preparing the same |
| EP0083723A2 (en) * | 1981-11-24 | 1983-07-20 | Showa Denko Kabushiki Kaisha | Electromagnetic wave-shielding materials |
| JPH08253317A (en) * | 1994-12-13 | 1996-10-01 | Nippon Shokubai Co Ltd | Zinc oxide-based fine particle, its production and use |
| JP2001342021A (en) * | 2000-05-31 | 2001-12-11 | Hakusui Tech Co Ltd | Method of preparing zinc oxide fine particles |
| JP2002309100A (en) * | 2001-04-12 | 2002-10-23 | Hakusui Tech Co Ltd | Ultraviolet ray shielding film |
| WO2004058645A1 (en) * | 2002-12-25 | 2004-07-15 | Cf High Tech Co., Ltd. | Electroconductive zinc oxide powder and method for production thereof, and electroconductive composition |
| CN1946550A (en) * | 2004-04-28 | 2007-04-11 | 住友金属工业株式会社 | Coated steel sheet with excellent heat dissipation |
| CN101545159A (en) * | 2009-05-04 | 2009-09-30 | 南京航空航天大学 | Rare-earth doped spinel ferrite/aluminum-doped zinc oxide composite fiber and preparation method thereof |
| CN102020899A (en) * | 2010-11-26 | 2011-04-20 | 中国人民解放军第三军医大学 | Composite coating electromagnetic shielding paint and composite coating electromagnetic shielding material prepared therefrom |
| JP2014215592A (en) * | 2013-04-30 | 2014-11-17 | コニカミノルタ株式会社 | Glass with polarization function and liquid crystal display device provided therewith |
| CN110429387A (en) * | 2019-07-31 | 2019-11-08 | 太仓碧奇新材料研发有限公司 | A kind of preparation method of Terahertz wave absorbing thin film |
| CN111718636A (en) * | 2020-06-28 | 2020-09-29 | 广州集泰化工股份有限公司 | Water-based epoxy low-zinc primer and preparation method thereof |
| CN112385326A (en) * | 2018-09-28 | 2021-02-19 | 株式会社Lg化学 | Composite material |
| KR102409631B1 (en) * | 2021-12-30 | 2022-06-16 | 장정식 | Copper powder based conductive paste for improved heat resistance and its preparation method |
| CN115121110A (en) * | 2021-03-24 | 2022-09-30 | 中国石油化工股份有限公司 | Method for catalyzing decomposition of nitrous oxide |
| CN116004026A (en) * | 2023-01-10 | 2023-04-25 | 苏州三体二太新能源科技有限公司 | Radiation refrigeration material and application thereof |
-
2023
- 2023-06-02 CN CN202310644938.6A patent/CN117117516B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1185474A (en) * | 1967-01-02 | 1970-03-25 | British Insulated Callenders | Improvements in Electrical Apparatus Incorporating a Laminated Dielectric. |
| US3951899A (en) * | 1970-06-22 | 1976-04-20 | Ppg Industries, Inc. | Opaque, microcellular films from latex compositions, process and composition for preparing the same |
| EP0083723A2 (en) * | 1981-11-24 | 1983-07-20 | Showa Denko Kabushiki Kaisha | Electromagnetic wave-shielding materials |
| US4508640A (en) * | 1981-11-24 | 1985-04-02 | Showa Denko Kabushiki Kaisha | Electromagnetic wave-shielding materials |
| JPH08253317A (en) * | 1994-12-13 | 1996-10-01 | Nippon Shokubai Co Ltd | Zinc oxide-based fine particle, its production and use |
| JP2001342021A (en) * | 2000-05-31 | 2001-12-11 | Hakusui Tech Co Ltd | Method of preparing zinc oxide fine particles |
| JP2002309100A (en) * | 2001-04-12 | 2002-10-23 | Hakusui Tech Co Ltd | Ultraviolet ray shielding film |
| WO2004058645A1 (en) * | 2002-12-25 | 2004-07-15 | Cf High Tech Co., Ltd. | Electroconductive zinc oxide powder and method for production thereof, and electroconductive composition |
| CN1946550A (en) * | 2004-04-28 | 2007-04-11 | 住友金属工业株式会社 | Coated steel sheet with excellent heat dissipation |
| CN101545159A (en) * | 2009-05-04 | 2009-09-30 | 南京航空航天大学 | Rare-earth doped spinel ferrite/aluminum-doped zinc oxide composite fiber and preparation method thereof |
| CN102020899A (en) * | 2010-11-26 | 2011-04-20 | 中国人民解放军第三军医大学 | Composite coating electromagnetic shielding paint and composite coating electromagnetic shielding material prepared therefrom |
| JP2014215592A (en) * | 2013-04-30 | 2014-11-17 | コニカミノルタ株式会社 | Glass with polarization function and liquid crystal display device provided therewith |
| CN112385326A (en) * | 2018-09-28 | 2021-02-19 | 株式会社Lg化学 | Composite material |
| CN110429387A (en) * | 2019-07-31 | 2019-11-08 | 太仓碧奇新材料研发有限公司 | A kind of preparation method of Terahertz wave absorbing thin film |
| CN111718636A (en) * | 2020-06-28 | 2020-09-29 | 广州集泰化工股份有限公司 | Water-based epoxy low-zinc primer and preparation method thereof |
| CN115121110A (en) * | 2021-03-24 | 2022-09-30 | 中国石油化工股份有限公司 | Method for catalyzing decomposition of nitrous oxide |
| KR102409631B1 (en) * | 2021-12-30 | 2022-06-16 | 장정식 | Copper powder based conductive paste for improved heat resistance and its preparation method |
| CN116004026A (en) * | 2023-01-10 | 2023-04-25 | 苏州三体二太新能源科技有限公司 | Radiation refrigeration material and application thereof |
Non-Patent Citations (4)
| Title |
|---|
| WEI LIU: "Carboxymethyl Cellulose/Graphene Oxide Composite Film-Coated Humidity Sensor Based on Thin-Core Fiber Mach-Zehnder Interferometer", 《IEEE ACCESS》 * |
| 寇雨佳;周文英;龚莹;蔡会武;吴红菊;: "聚合物/导热金属复合材料的研究进展", 中国塑料, no. 03 * |
| 董凯;赖伟恩;孙丹丹;文岐业;张怀武;: "基于金属孔阵列的聚酰亚胺薄膜太赫兹探测", 强激光与粒子束, no. 06 * |
| 高海霞: "纳米氧化锌/聚合物复合材料的制备及其光催化性能研究", 《中国优秀硕士学位论文全文数据库》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117117516B (en) | 2024-02-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Chakradhary et al. | Design of frequency selective surface-based hybrid nanocomposite absorber for stealth applications | |
| Baskey et al. | Metamaterial structure integrated with a dielectric absorber for wideband reduction of antennas radar cross section | |
| Bueno et al. | Microwave-absorbing properties of Ni0. 50–xZn0. 50− xMe2xFe2O4 (Me= Cu, Mn, Mg) ferrite–wax composite in X-band frequencies | |
| Zhu et al. | A new method for achieving miniaturization and gain enhancement of Vivaldi antenna array based on anisotropic metasurface | |
| Dixit et al. | The enhanced gain and cost‐effective antipodal Vivaldi antenna for 5G communication applications | |
| Huang et al. | Millimetre wave antennas for gigabit wireless communications: a practical guide to design and analysis in a system context | |
| Hansen et al. | Antennas with magneto‐dielectrics | |
| Kathuria et al. | Dual-band printed slot antenna for the 5G wireless communication network | |
| Guan et al. | Compact microstrip patch array antenna with parasitically coupled feed | |
| Wang et al. | Enhanced microwave absorption performance of lightweight absorber based on reduced graphene oxide and Ag-coated hollow glass spheres/epoxy composite | |
| Qu et al. | An ultra-thin ultra-broadband microwave absorber for radar stealth | |
| CN110641130A (en) | Preparation method of wave-absorbing foam for absorbing low-frequency electromagnetic waves | |
| CN117117516B (en) | Preparation method of organic/inorganic hybrid sub-terahertz wave-absorbing film | |
| Malfajani et al. | A 3D-printed encapsulated dual wide-band dielectric resonator antenna with beam switching capability | |
| Faeghi et al. | Nanoparticle-coated Vivaldi antenna array for gain enhancement | |
| CN103646126A (en) | Design method of micro-strip array focusing antenna and micro-strip array focusing antenna | |
| Priyadharshini et al. | Novel ENG metamaterial for gain enhancement of an off-set fed CPW concentric circle shaped patch antenna | |
| Sahu et al. | Investigation on cylindrical dielectric resonator antenna with metamaterial superstrate | |
| Naktong et al. | Dipole antenna with horn waveguide for energy harvesting in DTV systems | |
| Bulgaroni et al. | Low‐cost quad‐band dual antipodal Vivaldi antenna using microstrip to CPS transition | |
| Didi et al. | Study and Design of a 28/38 GHz Bi-band MIMO Antenna Array Element for 5G | |
| CN109413978B (en) | Composite electromagnetic wave absorbing material and preparation method thereof | |
| Tang et al. | 5G polarization converter based on low-temperature co-fired ceramic (LTCC) substrate | |
| Borah et al. | Miniaturized patch antennas on magnetodielectric substrate for X band communications | |
| BK et al. | Low Loss Anisotropic Circular Near-Zero Flexible Metasurface for Gain Enhancement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |