Batch production method of large-size electromagnetic shielding glass based on composite micro-nano additive manufacturing

Abstract

The invention provides a large-size electromagnetic shielding glass batch production method based on composite micro-nano additive manufacturing, which comprises the following steps: pre-treating a printing base material, and efficiently printing a metal mesh structure on the pre-treated base material by adopting a single-plate electrode electric field driven multi-nozzle spray deposition micro-nano 3D printing method; sintering the printed metal mesh at high temperature or low temperature; the sintered sample piece is cleaned, dirt which is generated in the sintering process and attached to the base material and the surface of the grid is removed, and excessive water is removed through air drying; putting the air-dried metal mesh into an electroforming pool, performing electroforming by using a micro electroforming power supply, and depositing a layer of magnetic conductive material on the surface of the conductive mesh structure and wrapping the conductive mesh structure to form a conductive / magnetic conductive composite material; the electroformed structure is taken out of the electroforming pool, deionized water is used for ultrasonic vibration washing, residual materials on the plated part are removed, and nitrogen is used for blow-drying; the large-scale manufacturing of the ultra-large-size broadband high-performance transparent electromagnetic shielding glass is realized through an additive manufacturing technology.

Description

technical field [0001] The invention relates to the technical field of transparent electromagnetic shielding glass processing, in particular to a mass production method for manufacturing large-size electromagnetic shielding glass based on composite micro-nano additives. Background technique [0002] The statements in this section merely provide background art related to the present invention and do not necessarily constitute prior art. [0003] Electromagnetic shielding glass is a light-transmitting observation window device with the function of attenuating electromagnetic radiation power. It can not only effectively prevent harmful electromagnetic energy from propagating from one side of the window to the other side, but also has a high transmittance of visible light (infrared light, etc.) , to ensure that the transmission of optical signals is not affected. Its main functions include: effectively shielding electromagnetic radiation interference, ensuring the normal operat...

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Problems solved by technology

[0006] In order to solve the deficiencies of the existing technology, the present invention adopts the single-plate electrode electric field to drive multi-nozzle jet deposition micro-nano 3D printing technology, and multi-nozzle parallel printing is integrally formed, which can print a large-area metal grid structure on the printing substrate with high precision, and It can ensure high light transmittance and realize mass production; the present invention adopts precision micro-electroforming technology to deposit a layer of metal layer with high magnetic permeability on the surface of a highly conductive metal grid to form a conductive / magnetic composite material Structure; on the one hand, the present invention solves the problem that a single shielding material cannot simultaneously satisfy low-frequency and high-frequency electromagnetic shielding, and can realize full-frequency (broadband) strong electromagnetic shielding; , greatly improve production efficiency (the electroforming time of large-size electromagnetic shielding glass is reduced to 5 minutes), and also has good weather resistance and corrosion resistance, and can be used in harsh natural environments; The new material manufacturing process realizes the manufacture of transparent electromagnetic shielding glass with super large size and high performance metal grid completely through the additive manufacturing technology, which solves the problem that the existing technology cannot realize the manufacture of super large size and high performance metal grid, and has high efficiency and low cost. Outstanding advantages such as low cost, high material utilization rate, no pollution and green manufacturing

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