CN113174132A - Composite electromagnetic shielding material - Google Patents
Composite electromagnetic shielding material Download PDFInfo
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- CN113174132A CN113174132A CN202110417356.5A CN202110417356A CN113174132A CN 113174132 A CN113174132 A CN 113174132A CN 202110417356 A CN202110417356 A CN 202110417356A CN 113174132 A CN113174132 A CN 113174132A
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- shielding material
- electromagnetic shielding
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- polyaniline
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- 239000000463 material Substances 0.000 title claims abstract description 34
- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 229920000767 polyaniline Polymers 0.000 claims abstract description 34
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 28
- 239000002184 metal Substances 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 description 15
- 238000002347 injection Methods 0.000 description 12
- 239000007924 injection Substances 0.000 description 12
- 238000002156 mixing Methods 0.000 description 8
- 230000005670 electromagnetic radiation Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 238000005469 granulation Methods 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 229920001940 conductive polymer Polymers 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 206010000210 abortion Diseases 0.000 description 1
- 231100000176 abortion Toxicity 0.000 description 1
- 210000000748 cardiovascular system Anatomy 0.000 description 1
- 239000002800 charge carrier Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000002124 endocrine Effects 0.000 description 1
- 230000001605 fetal effect Effects 0.000 description 1
- 210000000987 immune system Anatomy 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/041—Carbon nanotubes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/10—Metal compounds
- C08K3/14—Carbides
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- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Materials Engineering (AREA)
- Nanotechnology (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a composite electromagnetic shielding material which is prepared from the following components in parts by weight: 90% -95% of Polyaniline (PANI), 1% -5% of Carbon Nano Tube (CNT) and 1% -5% of two-dimensional carbide (MXene), and compared with a conventional metal shielding material, the novel composite electromagnetic shielding material has the advantages of high frequency efficiency, wide frequency band, light weight and thin thickness. The composite electromagnetic shielding material plays a good safety precaution role in the field of electromagnetic interference shielding of electronics, aerospace, airplanes, wearable equipment, automobiles and the like.
Description
Technical Field
The invention belongs to the field of electromagnetic shielding materials, and particularly relates to a composite electromagnetic shielding material.
Background
With the rapid development of modern information technology, electromagnetic waves are applied in large scale in the fields of electronic products, data transmission, electronic communication, wireless network systems, satellite emission, modern detection technology, radar detection technology, medical diagnosis and the like, thereby providing great convenience for the life of people and bringing about serious electromagnetic radiation pollution. Electromagnetic radiation pollution is invisible and invisible, but serious in harm. Firstly, the electromagnetic wave can cause endocrine disturbance of human body, the function of nervous system, immune system and cardiovascular system is reduced, and also can cause fetal distortion and even abortion of pregnant women, thus seriously harming the health of people. Secondly, electromagnetic waves emitted by different radiation signal sources can interfere with each other, so that the accuracy of data transmission is reduced, and the stability and reliability of electronic elements and electrical equipment are affected. For example, medical equipment or electronic experimental equipment may malfunction and lose data due to electromagnetic interference, and communication equipment may be interfered by electromagnetic waves to cause signal interruption and noise increase. Moreover, electromagnetic wave leakage can cause important information leakage in the aspects of national politics, economy, military and the like, and electromagnetic wave interference can influence the use of national accurate guidance weaponry and strategic materials, so that irreparable loss of national safety and economic development is caused.
In consideration of the diversity and unavailability of electromagnetic wave pollution sources, the adoption of electromagnetic shielding measures is an important feasible way for controlling pollution and reducing electromagnetic radiation hazards. The electromagnetic shielding material has great application value in the civil, commercial and military fields, and the electromagnetic shielding material with high efficiency researched and launched has very important practical significance and strategic significance.
In electromagnetic shielding, reflection and absorption are the main ways to block electromagnetic radiation. For reflection of electromagnetic radiation, the material must have mobile charge carriers, while absorption of electromagnetic radiation depends mainly on the interaction of the electromagnetic field with the electric and magnetic dipoles in the radiation. Therefore, the shielding material needs to have a certain conductivity while forming a good conductive path. Metal materials exhibit high electrical conductivity due to their mobile nature and are commonly used for electromagnetic shielding. Compared with metal shielding materials, conductive polymer composite materials have the advantages of low density, low cost, good processing formability, corrosion resistance, adjustable conductive performance and the like, so that the conductive polymer composite materials become electromagnetic shielding materials which are widely researched in recent years. The composite materials have wide application prospect in the field of electromagnetic interference shielding of electronics, aerospace, airplanes, wearable equipment, automobiles and the like. The existing electromagnetic wave shielding material is mainly a metal shielding material, has low shielding efficiency and large material thickness, and cannot meet the requirements of high frequency efficiency, wide frequency range, light weight and thin thickness of a novel high-performance electromagnetic shielding material.
In conclusion, it is of great significance to develop a novel electromagnetic shielding material which can meet the requirements of high frequency efficiency, wide frequency range, light weight and thin thickness.
Disclosure of Invention
The invention provides a composite electromagnetic shielding material, aiming at solving the technical problems of metal shielding materials in the prior art.
The technical scheme adopted by the invention is a composite electromagnetic shielding material which is prepared from the following components in parts by weight: 90% -95% of Polyaniline (PANI), 1% -5% of Carbon Nano Tube (CNT) and 1% -5% of two-dimensional carbide (MXene).
Preferably, the content of the Polyaniline (PANI) is as follows: 91% -94%.
Preferably, the content of the Carbon Nanotubes (CNTs) is: 3% -5%.
The technical scheme of the invention improves the components of the electromagnetic shielding material, and compared with the conventional metal shielding material, the novel composite electromagnetic shielding material has the advantages of high frequency efficiency, wide frequency range, light weight and thin thickness. The composite electromagnetic shielding material plays a good safety precaution role in the field of electromagnetic interference shielding of electronics, aerospace, airplanes, wearable equipment, automobiles and the like.
Detailed Description
The present invention is described in further detail below, it being noted that the following examples are intended to facilitate the understanding of the present invention, but are not intended to limit the invention in any way.
The following specific embodiments are provided to disclose the performance of various combination examples. Therefore, this patent specification should be considered to disclose all possible combinations of the described technical solutions.
The composite electromagnetic shielding material in the technical scheme of the invention comprises the following components in parts by weight: 90% -95% of Polyaniline (PANI), 1% -5% of Carbon Nano Tube (CNT) and 1% -5% of two-dimensional carbide (MXene).
Example 1
Firstly, Polyaniline (PANI), Carbon Nano Tubes (CNT) and two-dimensional carbide (MXene) are weighed and dried according to the weight ratio of 94% of Polyaniline (PANI), 5% of Carbon Nano Tubes (CNT) and 1% of two-dimensional carbide (MXene) and are fully and uniformly mixed on a high-speed mixer. Then, melt blending, cooling and re-granulation were performed using a twin-screw extruder. After the pellets after melt blending extrusion were dried in a drying oven at 80 ℃ for 6 hours, injection molding was carried out at an injection temperature of 200 ℃, a mold locking pressure of 100MPa, an injection pressure of 60MPa, a holding pressure of 50MPa, and a holding time of 10 seconds. Specimens of different shapes and sizes, required for subsequent testing, were cut from the injection molded plaques.
The product obtained above was tested as follows: and testing the electromagnetic shielding effectiveness of the material by adopting a vector network analyzer. The test sample used for testing is a circular ring-shaped test sample with the inner diameter of 3 mm, the outer diameter of 7 mm and the thickness of 2 mm.
Example 2
Firstly, Polyaniline (PANI), Carbon Nano Tube (CNT) and two-dimensional carbide (MXene) are weighed and dried according to the weight ratio of Polyaniline (PANI) 93%, Carbon Nano Tube (CNT) 4% and two-dimensional carbide (MXene) 3%, and are fully and uniformly mixed on a high-speed mixer. Then, melt blending, cooling and re-granulation were performed using a twin-screw extruder. After the pellets after melt blending extrusion were dried in a drying oven at 80 ℃ for 6 hours, injection molding was carried out at an injection temperature of 200 ℃, a mold locking pressure of 100MPa, an injection pressure of 60MPa, a holding pressure of 50MPa, and a holding time of 10 seconds. Specimens of different shapes and sizes, required for subsequent testing, were cut from the injection molded plaques.
The product prepared in the above way is tested, and the testing method and the testing content are completely the same as those in the embodiment 1.
Example 3
Firstly, Polyaniline (PANI), Carbon Nano Tubes (CNT) and two-dimensional carbide (MXene) are weighed and dried according to the weight ratio of Polyaniline (PANI) 92%, Carbon Nano Tubes (CNT) 3% and two-dimensional carbide (MXene) 5%, and are fully and uniformly mixed on a high-speed mixer. Then, melt blending, cooling and re-granulation were performed using a twin-screw extruder. After the pellets after melt blending extrusion were dried in a drying oven at 80 ℃ for 6 hours, injection molding was carried out at an injection temperature of 200 ℃, a mold locking pressure of 100MPa, an injection pressure of 60MPa, a holding pressure of 50MPa, and a holding time of 10 seconds. Specimens of different shapes and sizes, required for subsequent testing, were cut from the injection molded plaques.
The product prepared in the above way is tested, and the testing method and the testing content are completely the same as those in the embodiment 1.
Example 4
Firstly, Polyaniline (PANI), Carbon Nano Tube (CNT) and two-dimensional carbide (MXene) are weighed and dried according to the weight ratio of 91% of Polyaniline (PANI), 5% of Carbon Nano Tube (CNT) and 4% of two-dimensional carbide (MXene), and are fully and uniformly mixed on a high-speed mixer. Then, melt blending, cooling and re-granulation were performed using a twin-screw extruder. After the pellets after melt blending extrusion were dried in a drying oven at 80 ℃ for 6 hours, injection molding was carried out at an injection temperature of 200 ℃, a mold locking pressure of 100MPa, an injection pressure of 60MPa, a holding pressure of 50MPa, and a holding time of 10 seconds. Specimens of different shapes and sizes, required for subsequent testing, were cut from the injection molded plaques.
The product prepared in the above way is tested, and the testing method and the testing content are completely the same as those in the embodiment 1.
Comparative example 1
The Polyaniline (PANI) product was tested by the same method and content as in example 1.
Table 1 electromagnetic shielding effectiveness of examples 1 to 4 and comparative example 1 are shown below.
According to the above results, the electromagnetic shielding effect of comparative example 1 is not good when only Polyaniline (PANI) is used as the shielding material, and the mass ratio of the Carbon Nanotube (CNT) and the two-dimensional carbide (MXene) has a great influence on the electromagnetic shielding effectiveness, and in this test, the composite electromagnetic shielding material has the best electromagnetic shielding effect when the Polyaniline (PANI) is 94 wt%, the Carbon Nanotube (CNT) is 5 wt%, and the two-dimensional carbide (MXene) is 1 wt%.
Claims (3)
1. The composite electromagnetic shielding material is characterized by comprising the following components in parts by weight: 90% -95% of Polyaniline (PANI), 1% -5% of Carbon Nano Tube (CNT) and 1% -5% of two-dimensional carbide (MXene).
2. The composite electromagnetic shielding material according to claim 1, wherein the Polyaniline (PANI) is present in an amount of: 91% -94%.
3. The composite electromagnetic shielding material of claim 1, wherein the Carbon Nanotubes (CNTs) are present in an amount of: 3% -5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110417356.5A CN113174132A (en) | 2021-04-19 | 2021-04-19 | Composite electromagnetic shielding material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110417356.5A CN113174132A (en) | 2021-04-19 | 2021-04-19 | Composite electromagnetic shielding material |
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| Publication Number | Publication Date |
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| CN113174132A true CN113174132A (en) | 2021-07-27 |
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| CN202110417356.5A Pending CN113174132A (en) | 2021-04-19 | 2021-04-19 | Composite electromagnetic shielding material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114854199A (en) * | 2022-05-13 | 2022-08-05 | 青岛科技大学 | Sawtooth-shaped conductive silicone rubber nanocomposite and preparation method and application thereof |
Citations (8)
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|---|---|---|---|---|
| CN105330857A (en) * | 2015-11-19 | 2016-02-17 | 浙江大学 | Preparation method of PANI (polyaniline)-GO (graphene oxide)-CNTs (carbon nanotubes) composited electromagnetic shielding material |
| CN107033347A (en) * | 2017-05-03 | 2017-08-11 | 华东理工大学 | A kind of method for preparing graphene/carbon nano-tube/conductive polymer composite |
| CN107033590A (en) * | 2017-03-24 | 2017-08-11 | 西北工业大学 | A kind of composite wave-suction material prepared by three-step reaction and preparation method |
| CN110670107A (en) * | 2019-09-19 | 2020-01-10 | 中山大学 | Titanium carbide nanosheet/carbon nanotube electromagnetic shielding film and preparation method thereof |
| CN111138661A (en) * | 2020-01-19 | 2020-05-12 | 上海应用技术大学 | Preparation method and application of graphene/carbon nanotube/polyaniline composite material |
| CN111892816A (en) * | 2020-06-30 | 2020-11-06 | 浙江理工大学 | Dodecyl benzene sulfonic acid doped PANI/MXene composite wave-absorbing material and preparation method thereof |
| WO2021058775A1 (en) * | 2019-09-25 | 2021-04-01 | Cambridge Enterprise Limited | Perovskite semiconductor devices |
| CN112625441A (en) * | 2020-12-17 | 2021-04-09 | 集美大学 | Manganese-zinc ferrite/polyaniline/titanium carbide composite wave-absorbing material and preparation method thereof |
-
2021
- 2021-04-19 CN CN202110417356.5A patent/CN113174132A/en active Pending
Patent Citations (8)
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| CN105330857A (en) * | 2015-11-19 | 2016-02-17 | 浙江大学 | Preparation method of PANI (polyaniline)-GO (graphene oxide)-CNTs (carbon nanotubes) composited electromagnetic shielding material |
| CN107033590A (en) * | 2017-03-24 | 2017-08-11 | 西北工业大学 | A kind of composite wave-suction material prepared by three-step reaction and preparation method |
| CN107033347A (en) * | 2017-05-03 | 2017-08-11 | 华东理工大学 | A kind of method for preparing graphene/carbon nano-tube/conductive polymer composite |
| CN110670107A (en) * | 2019-09-19 | 2020-01-10 | 中山大学 | Titanium carbide nanosheet/carbon nanotube electromagnetic shielding film and preparation method thereof |
| WO2021058775A1 (en) * | 2019-09-25 | 2021-04-01 | Cambridge Enterprise Limited | Perovskite semiconductor devices |
| CN111138661A (en) * | 2020-01-19 | 2020-05-12 | 上海应用技术大学 | Preparation method and application of graphene/carbon nanotube/polyaniline composite material |
| CN111892816A (en) * | 2020-06-30 | 2020-11-06 | 浙江理工大学 | Dodecyl benzene sulfonic acid doped PANI/MXene composite wave-absorbing material and preparation method thereof |
| CN112625441A (en) * | 2020-12-17 | 2021-04-09 | 集美大学 | Manganese-zinc ferrite/polyaniline/titanium carbide composite wave-absorbing material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| YONG-ZHU CAI ET AL.: "MXene-CNT/PANI ternary material with excellent supercapacitive performance driven by synergy", 《JOURNAL OF ALLOYS AND COMPOUNDS》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114854199A (en) * | 2022-05-13 | 2022-08-05 | 青岛科技大学 | Sawtooth-shaped conductive silicone rubber nanocomposite and preparation method and application thereof |
| CN114854199B (en) * | 2022-05-13 | 2023-06-20 | 青岛科技大学 | Sawtooth-shaped conductive silicone rubber nanocomposite and preparation method and application thereof |
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Application publication date: 20210727 |
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