An adjustable multi-level shielding method to improve electromagnetic shielding effectiveness
An electromagnetic shielding and efficiency technology, which is applied in the fields of shielding efficiency measurement, magnetic field/electric field shielding, and equipment for manufacturing conductive/semi-conductive layers, etc. , the effect of high conductivity
Active Publication Date: 2022-04-15
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
But about Ti 3 C 2 Most of the electromagnetic shielding research is Ti 3 C 2 Composite materials, although the mechanical properties, water resistance and thermal stability of composite materials are highlighted, but the Ti 3 C 2 The problem that the electromagnetic shielding effect will be reduced after being combined with other materials has not been solved
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[0024] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0025] An adjustable multi-stage shielding method for improving electromagnetic shielding effectiveness, comprising the following steps:
[0026]Ti finally 3 C 2 Film preparation:
[0027] Assemble the glass sand core filter head and Erlenmeyer flask first, then place the commercial mixed fiber filter membrane (0.22 μm in pore size) on the glass sand core filter head as a supporting membrane, wet it with deionized water, and put the deionized water Assemble the filter cup after suction filtration. Pipette 5mL, 10mL, 20mL, 30mL of Ti 3 C 2 Colloidal solution (5 mg mL -1 ) into the filter cup and start suction filtration. Suction filtration until there is no water on the surface, and after drying completely at room temperature, the mixed fiber filter membrane is removed to obtain flexible self-supporting Ti with different qualit...
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Abstract
An adjustable multi-level shielding method for improving electromagnetic shielding effectiveness, comprising the following steps: preparing flexible self-supporting Ti 3 C 2 Thin films; flexible self-supporting Ti of different masses 3 C 2 Thin films were superimposed and tested for Ti 3 C 2 The electromagnetic shielding effectiveness of different layers of superimposed structures of thin films; according to the obtained electromagnetic shielding effectiveness of different layers of superimposed structures, adjust the Ti 3 C 2 The spacing d of the thin film superposition structure is used to test the electromagnetic shielding effectiveness, and the Ti when the electromagnetic shielding effectiveness is optimal is obtained. 3 C 2 Thin film stack structure. The method has the advantages of low cost, low energy consumption and simple process, and also achieves the purpose of improving electromagnetic shielding efficiency.
Description
technical field [0001] The invention relates to the technical field of improving the electromagnetic shielding effectiveness of electromagnetic shielding materials, in particular to an adjustable multi-stage shielding method for improving the electromagnetic shielding effectiveness. Background technique [0002] With the rapid development of communication technology and the continuous increase of miniaturized mobile electronic devices, electromagnetic interference (EMI) problems are becoming more and more serious, including data loss, data misinterpretation, and even system failure due to strong electromagnetic induction effects at close range. Excessive electromagnetic radiation in the environment can also affect the immune system, reproductive system, and nervous system of the human body. Therefore, the problem of electromagnetic pollution has been paid more and more attention, and people hope to use different high-frequency electromagnetic interference shielding materials...
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IPC IPC(8): H05K9/00H01B13/00
CPCH05K9/0088H05K9/0069H01B13/0026
Inventor 赵强徐浩天赵为为刘淑娟黄维
Owner NANJING UNIV OF POSTS & TELECOMM