Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of carbon-coated nickel nanoparticle/silicone resin composite wave-absorbing coating and preparation method thereof

A nano-particle and wave-absorbing coating technology, applied in the field of wave-absorbing materials, can solve the problem of inability to take into account strong electromagnetic wave absorption and broadband absorption, and achieve the effects of improving chemical stability, good absorption effect, and avoiding swelling and deformation of the coating.

Inactive Publication Date: 2018-04-17
GUANGDONG UNIV OF TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional wave-absorbing materials that use ferrite as a filler often cannot take into account the advantages of strong electromagnetic wave absorption and broadband absorption
However, there is no literature report on the combination of the two to prepare wave-absorbing coatings.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of carbon-coated nickel nanoparticle/silicone resin composite wave-absorbing coating and preparation method thereof
  • A kind of carbon-coated nickel nanoparticle/silicone resin composite wave-absorbing coating and preparation method thereof
  • A kind of carbon-coated nickel nanoparticle/silicone resin composite wave-absorbing coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A preparation method of a carbon-coated nickel nanoparticle / silicone resin composite wave-absorbing coating, comprising the steps of:

[0038] (1) Preparation of carbon-coated nickel nanoparticles:

[0039] Use arc plasma to prepare nanomaterial system, use graphite rod as cathode, mix graphite powder (micron level) and reduced nickel powder (micron level) in a weight ratio of 4:1, and pass through the metallographic sample mounting machine Press into a cylindrical anode with a diameter of 25mm and a height of 30mm, and the distance between the two electrodes is 3-5mm; the reaction chamber is evacuated to 2-3Pa, and high-purity argon is introduced to make the pressure in the chamber reach 50kPa, and the direct current is controlled. The voltage is 22V, the DC current is 150A, so that a stable arc is generated between the two poles; the anode material is consumed during the arc radiation process and converted into soot and deposited on the inner surface of the reaction c...

Embodiment 2

[0045] A preparation method of a carbon-coated nickel nanoparticle / silicone resin composite wave-absorbing coating, comprising the steps of:

[0046] (1) Preparation of carbon-coated nickel nanoparticles:

[0047] Use arc plasma to prepare nanomaterial system, use graphite rod as cathode, mix graphite powder (micron level) and reduced nickel powder (micron level) in a weight ratio of 2:3, and pass through the metallographic sample mounting machine Press into a cylindrical anode with a diameter of 25mm and a height of 30mm, and the distance between the two electrodes is 3-5mm; the reaction chamber is evacuated to 2-3Pa, and high-purity argon is introduced to make the pressure in the chamber reach 45kPa, and the direct current is controlled. The voltage is 30V and the DC current is 130A, so that a stable arc is generated between the two poles; the anode material is consumed during the arc radiation process and converted into soot and deposited on the inner surface of the reactio...

Embodiment 3

[0053] A preparation method of a carbon-coated nickel nanoparticle / silicone resin composite wave-absorbing coating, comprising the steps of:

[0054] (1) Preparation of carbon-coated nickel nanoparticles:

[0055] Use arc plasma to prepare nanomaterial system, use graphite rod as cathode, mix graphite powder (micron level) and reduced nickel powder (micron level) in a weight ratio of 3:2, and pass through the metallographic sample mounting machine Press into a cylindrical anode with a diameter of 25mm and a height of 30mm, and the distance between the two electrodes is 3-5mm; the reaction chamber is evacuated to 2-3Pa, and high-purity argon is introduced to make the pressure in the chamber reach 30kPa, and the direct current is controlled. The voltage is 20V and the DC current is 120A, so that a stable arc is generated between the two poles; the anode material is consumed during the arc radiation process and converted into soot and deposited on the inner surface of the reactio...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a carbon-coated nickel nanoparticle / silicone resin composite wave-absorbing coating and a preparation method thereof. The composite wave-absorbing coating is composed of carbon-coated nickel nanoparticles and silicone resin, wherein the carbon-coated nickel nanoparticle The weight percent content in the composite wave-absorbing coating is 40-60wt%. The preparation method comprises preparing carbon-coated nickel nanoparticles by an arc discharge method; filling the carbon-coated nickel nanoparticles into silicone resin and mixing them uniformly to obtain a coating slurry; taking an appropriate amount of xylene as a solvent and adding it to the slurry to adjust the slurry The viscosity of the material; add the curing agent to the slurry, stir evenly, and prepare a coating with a certain thickness. The composite wave-absorbing coating prepared by the invention has the advantages of wide wave-absorbing frequency band, good wave-absorbing effect, low reflectivity, high stability, good mechanical properties, etc., and is simple in process and easy to repair.

Description

technical field [0001] The invention belongs to the technical field of wave-absorbing materials, and in particular relates to a carbon-coated nickel nanoparticle / silicone resin composite wave-absorbing coating and a preparation method thereof. Background technique [0002] Since the beginning of the 21st century, the wide application and development of electronic equipment has brought great convenience to people's life, and at the same time, the electromagnetic radiation produced by it has also had a great impact on human health and the environment on which we live. Electromagnetic wave absorbing materials are not only widely used in civilian use, but also become more and more important in the military. To improve the survivability and defense capabilities of military weapon systems, stealth technology has undoubtedly become a high-tech military technology that countries around the world focus on research and development. Nanocomposite wave-absorbing coatings can absorb elec...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/04C09D5/32
Inventor 黄颖欣张海燕曾国勋谢润丰郑利明朱炯杭
Owner GUANGDONG UNIV OF TECH