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Preparation method for MXene-based electromagnetic shielding coating

An electromagnetic shielding and coating technology, applied in the direction of magnetic field/electric field shielding, surface reaction electrolytic coating, coating, etc., can solve the problems of not being able to exert superior characteristics

Pending Publication Date: 2021-12-07
肇庆市海特复合材料技术研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is to solve the technical problem that the existing electromagnetic shielding material is used as a base material or a filler, and cannot exert its own superior characteristics, and provides a preparation method of an MXene-based electromagnetic shielding coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0022] Specific embodiment one: present embodiment is a kind of preparation method of MXene-based electromagnetic shielding coating, specifically carries out according to the following steps:

[0023] 1. Preparation of MXenes:

[0024] ①, the titanium alloy Ti 6 Al 4 The V piece was cut into a surface size of 2cm×4cm, washed with acetone and absolute ethanol by ultrasonic vibration, and dried naturally; NaHSO 4 The mixed aqueous solution of NaF and NaF is used as the electrolyte, and the titanium alloy Ti after drying 6 Al 4 The V sheet is the anode, the platinum sheet is the two-electrode system of the cathode, apply a voltage of 25V to 45V, anodize for 1.5h to 3h, take out the anode material, rinse with deionized water, and dry to obtain TiO 2 NTs / Ti 6 Al 4 V piece; NaHSO in the electrolyte 4 The concentration of NaF is 0.2mol / L~0.6mol / L, and the concentration of NaF is 0.2mol / L~0.6mol / L;

[0025] ②. Spread 4g~7g of PEG2000 in the porcelain boat, and put the TiO pre...

specific Embodiment approach 2

[0036] Specific embodiment two: the difference between this embodiment and specific embodiment one is: step one (1) in the titanium alloy Ti after drying 6 Al 4 The V sheet is the anode, the platinum sheet is the two-electrode system of the cathode, apply a voltage of 35V, anodize for 2h, take out the anode material, rinse with deionized water, and dry to obtain TiO 2 NTs / Ti 6 Al 4 V piece; NaHSO in the electrolyte 4 The concentration of NaF is 0.5mol / L, and the concentration of NaF is 0.5mol / L. Others are the same as the first embodiment.

specific Embodiment approach 3

[0037] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that in step one ②, 6g of PEG2000 is spread in a porcelain boat, and the TiO prepared in step one 2 NTs / Ti 6 Al 4 The V piece is fixed on the PEG2000 in the porcelain boat, and the porcelain boat is placed in a tube furnace, heated from room temperature to 500°C at a heating rate of 8°C / min under the protection of argon and kept for 2 hours, and then heated under the protection of argon. Raise the temperature to 1100°C at a heating rate of 8°C / min and keep it warm for 3h, then cool down to room temperature with the furnace under the protection of argon, and obtain TiC in a porcelain boat. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method for an MXene-based electromagnetic shielding coating and relates to a preparation method for an electromagnetic shielding coating. The invention aims to solve the technical problem that an existing electromagnetic shielding material is used as a base material or a filler and cannot exert the excellent characteristics of the electromagnetic shielding material. The preparation method for the MXene-based electromagnetic shielding coating is performed according to the following steps that 1, MXenes are prepared; 2, nano Fe particle reinforced magnesium-based composite powder is prepared; and 3, spraying is performed on the surface of a base body through the hypersonic flame spraying technology. By means of the preparation method for the MXene-based electromagnetic shielding coating, the Fe particle reinforced magnesium-based composite powder and the MXenes are compounded to obtain the composite electromagnetic shielding material with the advantages of the Fe particle reinforced magnesium-based composite powder and the MXenes; and according to the composite electromagnetic shielding coating prepared from composite electromagnetic shielding paint by hypersonic flame spraying, the bonding strength of the coating is larger than or equal to 50 MPa, and the absolute value of the electromagnetic shielding effectiveness within the frequency range of 1 MHz to 1.5 GHz is larger than 40 dB.

Description

technical field [0001] The invention relates to a preparation method of an electromagnetic shielding coating. Background technique [0002] With the development of science and technology, electronic devices such as mobile phones, tablets, and laptops are rapidly popularized. While bringing convenience to human life, these electronic devices also generate a large amount of electromagnetic waves. Excessive electromagnetic waves will not only interfere with the normal operation of precision electronic devices, but also cause damage to human health. The best way to solve the above problems is to use electromagnetic shielding materials, which can block electromagnetic waves to the greatest extent, so that the target is protected from electromagnetic wave interference. The development of electromagnetic shielding materials has a history of several decades. The commonly used electromagnetic shielding materials developed at present mainly include metals, ferromagnetic materials, co...

Claims

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Application Information

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IPC IPC(8): C23C4/129C23C4/06B22F9/08C25D11/26H05K9/00
CPCC23C4/129C23C4/06B22F9/082C25D11/26H05K9/0084B22F2009/0848
Inventor 王荣国刘文博徐忠海蔡朝灿赫晓东杨帆
Owner 肇庆市海特复合材料技术研究院