Preparation technology of microwave band metamaterial wave absorber

A technology of metamaterials and absorbers, which is applied in the direction of copying/marking methods, printing, electrical components, etc., can solve the problems of thin printing thickness and difficult control of conductivity, so as to improve the compactness and thickness, and improve the inkjet printing effect , the effect of improving conductivity

Pending Publication Date: 2020-03-10
德州迈特新材料研究中心
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Problems solved by technology

A metamaterial absorber was successfully prepared on a polyimide film with a high-concentration nano-silver conductive ink using an ordinary inkjet printer, but the printing thickness is thin and the conductivity is not easy to control

Method used

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  • Preparation technology of microwave band metamaterial wave absorber
  • Preparation technology of microwave band metamaterial wave absorber
  • Preparation technology of microwave band metamaterial wave absorber

Examples

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preparation example Construction

[0017] The invention provides a preparation method of a metamaterial absorber. The technical scheme provided by the invention is as follows:

[0018] Step 1: Use the commercialized (PMDA-ODA) type Kapton film PI film produced by DuPont Company of the United States, with a size of 180x180x0.05 (mm). Treat with potassium permanganate, potassium hydroxide, ethylenediamine and their mixture for 95 minutes, and dry in a drying oven at 500c for 5 minutes after cleaning.

[0019] Step 2: First use AutoCAD drawing software to draw the optimized structure, and then use an inkjet printer to print on the modified PI film. The printing equipment used is an Epson ink tank integrated inkjet printer (Epson, L211, four-color), and the printing ink uses nano-silver conductive ink with a mass concentration of 10% (mass concentration is 10%), and the metamaterial obtained by inkjet printing Resonant unit pattern.

[0020] Step 3: Place the printed sample in a drying oven for heat treatment a...

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Abstract

The invention relates to a method for preparing a microwave band metamaterial wave absorber by combining ink-jet printing and chemical plating. The method comprises the steps that 1, pretreatment of aPI film is a necessary process for turning a non-polar film into an effective printing material, and the infrared spectrogram shows that the ink-jet printing effect can be significantly improved after a surface active group C=C of the PI film is opened; and 2, a 200oc heat treatment contrast test shows that the uniform rearrangement of an activation center is facilitated by performing high-temperature heat treatment on a sample subjected to ink-jet printing before chemical plating, the compactness and thickness of a plating layer can be improved, the electrical conductivity is improved, the thickness of the obtained plating layer can reach 10 microns, and the electrical conductivity is greater than 105S / cm. The method is simple, convenient, low in cost, environmentally friendly and efficient, can also be used for preparing flexible metamaterials and curved-surface electromagnetic shielding materials, and has great prospects.

Description

technical field [0001] The invention relates to the method of combining inkjet printing and electroless plating to realize the preparation of a metamaterial absorber in the microwave segment, which is simple and convenient, low in cost, environmentally friendly and efficient, and can also be used in the preparation of flexible metamaterials and curved surface electromagnetic shielding materials. Great prospects. Background technique [0002] With the increasing development of electronic communication technology, the Internet, the Internet of Things and other technologies, electromagnetic radiation and electromagnetic pollution have become one of the safety issues related to people's physical and mental health. [0003] When electromagnetic radiation passes through the human body, its energy will be absorbed by the human body. If the energy is too large and lasts too long, electromagnetic radiation will affect the normal tissues, organs and system functions of the human body ...

Claims

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Application Information

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IPC IPC(8): H05K9/00B41M5/00
CPCH05K9/0092H05K9/0086B41M5/0064B41M5/0023
Inventor 范润华张子栋孙凯刘峣屈云鹏范国华解培涛王忠阳范润德
Owner 德州迈特新材料研究中心
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