Preparation method of high-performance electromagnetic shielding material

An electromagnetic shielding material and high-performance technology, applied in the fields of magnetic/electric field shielding, electrolytic coatings, electrophoretic plating, etc., can solve the problem that the strength and electromagnetic shielding performance cannot meet the requirements of wires and cables, and achieve excellent electromagnetic shielding performance and corrosion resistance. Excellent effect of improving processability

Inactive Publication Date: 2018-08-24
DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The weight percent composition of the material is: Cr 0.05-0.75%, Zr 0.01-0.05%, Ag0.012-0.12%, Fe 0.005-0.05%, B0.002-0.01%, and the rest is copper, among which silver and zirconium The mass ratio is 1.2-2.4. Through smelting and casting, hot rolling, solution treatment, etc., the material obtained has good electromagnetic shielding performance and high strength, but the strength and electromagnetic shielding performance of the material still cannot meet the requirements of wire and cable for copper alloy materials. requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing a high-performance electromagnetic shielding material, comprising the following steps:

[0028] (1) Add electrolytic copper, tantalum powder, nickel powder, cobalt powder, and copper-silicon alloy into a non-vacuum induction furnace, heat up until the solid is completely melted, and heat-preserve at 1300°C for 30 minutes;

[0029] (2) Add titanium-copper master alloy and copper-cerium master alloy, keep it at 1300°C for 10 minutes, and then add zirconium wire with copper-plated surface;

[0030] (3) Inflate air into a non-vacuum induction furnace to remove impurities, heat it at 1300°C for 8 minutes, stir it, and spray cast it in a water-cooled copper mold after standing still to obtain a rough billet;

[0031] (4) The rough billets obtained above were subjected to solution treatment at 900°C for 5 hours, 1 mm milling of the upper and lower sides, hot rolling at 880°C for 1 hour, short-time remelting at 850°C for 8 minutes, cold rolling, and aging...

Embodiment 2

[0035] A method for preparing a high-performance electromagnetic shielding material, comprising the following steps:

[0036] (1) Add electrolytic copper, tantalum powder, nickel powder, cobalt powder, and copper-silicon alloy into a non-vacuum induction furnace, heat up until the solid is completely melted, and heat-preserve at 1380°C for 30 minutes;

[0037] (2) Add titanium-copper master alloy and copper-cerium master alloy, keep it at 1380°C for 10 minutes, and then add zirconium wire with copper-plated surface;

[0038] (3) Inflate air into a non-vacuum induction furnace to remove impurities, heat it at 1350°C for 8 minutes, stir, and after standing still, spray-cast it in a water-cooled copper mold to obtain a rough billet;

[0039] (4) The rough billet prepared above was subjected to solution treatment at 980°C for 5 hours, milling of the upper and lower sides for 1 mm, hot rolling at 880°C for 1 hour, short-time remelting at 880°C for 8 minutes, cold rolling, and aging...

Embodiment 3

[0043] A method for preparing a high-performance electromagnetic shielding material, comprising the following steps:

[0044] (1) Add electrolytic copper, tantalum powder, nickel powder, cobalt powder, and copper-silicon alloy into a non-vacuum induction furnace, heat up until the solid is completely melted, and heat-preserve at 1350°C for 30 minutes;

[0045] (2) Add titanium-copper master alloy and copper-cerium master alloy, keep it at 1350°C for 10 minutes, then add zirconium wire with copper-plated surface;

[0046] (3) Inflate air into a non-vacuum induction furnace to remove impurities, heat it at 1310°C for 8 minutes, stir it, and after standing still, spray-cast it in a water-cooled copper mold to obtain a rough billet;

[0047] (4) The rough billets obtained above were subjected to solution treatment at 920°C for 5 hours, milling of the upper and lower sides for 1 mm, hot rolling at 880°C for 1 hour, short-time remelting at 860°C for 8 minutes, cold rolling, and agin...

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Abstract

The invention discloses a preparation method of a high-performance electromagnetic shielding material. The method includes the steps of: preparing a copper alloy substrate in a spray-casting manner, and preparing a nano titanium oxide layer on the surface of the copper alloy substrate through micro-arc oxidation; finally uniformly mixing and stirring carbon nano-tubes, polysiloxane, aluminum sulfate and ethanol and performing ultrasonic treatment for 1 h under power of 500 W to produce an electrolyte; and preparing a carbon nano-tube layer on the surface of the nano titanium oxide layer through electrophoretic deposition with the electrolyte. The material has excellent electromagnetic shielding performance, is good in interlayer combining force and has excellent anti-corrosion performance.

Description

Technical field: [0001] The invention relates to the field of electromagnetic shielding materials, in particular to a preparation method of a high-performance electromagnetic shielding material. Background technique: [0002] With the rapid development of science and technology, electronic products are widely used in all walks of life, and the resulting electromagnetic radiation pollution problem is becoming more and more serious. On the one hand, electromagnetic radiation generated by electromagnetic waves affects people's health and interferes with surrounding electronic instruments. On the other hand, the electromagnetic interference generated by electromagnetic waves will cause the leakage of electromagnetic information of computers and other instruments, threatening information security. In particular, it is particularly important and urgent to solve the radiation and interference problems of the widely used TV signal transmission, communication microwave relay system, ...

Claims

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Application Information

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IPC IPC(8): C22C1/03C22C9/06C22F1/08C25D11/26C25D13/02H05K9/00
CPCC22C1/03C22C9/06C22F1/08C25D11/026C25D11/26C25D13/02H05K9/0081
Inventor 陈东进
Owner DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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