Anti-radar coating and preparation method thereof

A technology of wave-absorbing coating and epoxy resin, which is applied in the field of wave-absorbing materials, can solve the problems of low selectivity of electromagnetic parameters of wave-absorbing coatings, failure to meet further requirements for wave-absorbing performance, poor compatibility, etc., and achieve compatibility Excellent, satisfactory absorption, high absorption effect

Inactive Publication Date: 2012-12-05
KUANG CHI INST OF ADVANCED TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The existing wave-absorbing coatings mainly have the following problems: 1. Low absorption rate, 2. Poor compatibility, 3. Narrow frequency band, 4. The selectivity of electromagnetic parameters of wave-absorbing coatings is not high, which cannot meet the requirements of technological development for wave-absorbing materials. Further requirements for performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of wave-absorbing coating, its formula is: (by mass ratio)

[0024] 1 part of epoxy resin, 0.05 part of carbon nanotube, 0.15 part of carbon nanotube dispersant, 0.4 part of epoxy resin thinner, 2 / 3 part of modified alicyclic amine;

[0025] Wherein, also comprising the conductive carbon black that the content in epoxy resin and epoxy resin diluent is 0.08g / ml.

[0026] The preparation process of the wave-absorbing coating of the present embodiment is:

[0027] a. ball milling carbon nanotubes and conductive carbon black in a stainless steel ball mill for 2 hours according to the above ratio, to obtain a carbon black nanocarbon tube mixture;

[0028] b. Dilute the epoxy resin with epoxy resin diluent in the stirred tank, and the epoxy resin diluent selects commercially available epoxy resin special diluent, and the carbon black nano-carbon tube mixture is added to the diluted epoxy resin , then add carbon nanotube dispersant, stir evenly at a low speed of 800 r...

Embodiment 2

[0032] A kind of wave-absorbing coating, its formula is: (by mass ratio)

[0033] 1 part of epoxy resin, 0.2 part of carbon nanotube, 0.2 part of carbon nanotube dispersant, 0.8 part of epoxy resin diluent, 1 part of hexamethylenediamine;

[0034] Among them, the conductive carbon black with a content of 0.09 g / ml in the epoxy resin and the epoxy resin diluent is also included.

[0035] The preparation process of the wave-absorbing coating of the present embodiment is:

[0036] a. carbon nanotubes and carbon black were ball milled in a stainless steel ball mill for 4 hours according to the above-mentioned proportioning, to obtain a carbon black nanocarbon tube mixture;

[0037] b. Dilute the epoxy resin with epoxy resin diluent in the stirred tank, and the epoxy resin diluent selects commercially available epoxy resin special diluent, and the carbon black nano-carbon tube mixture is added to the diluted epoxy resin In the process, add carbon nanotube dispersant, select carbo...

Embodiment 3

[0041] A kind of wave-absorbing coating, its formula is: (by mass ratio)

[0042] 1 part of epoxy resin, 0.15 part of carbon nanotube, 0.2 part of carbon nanotube dispersant, 0.8 part of epoxy resin thinner, 0.8 part of hexamethylenediamine;

[0043] Wherein, also comprising the conductive carbon black that the content in epoxy resin and epoxy resin diluent is 0.086g / ml.

[0044] The preparation process of the wave-absorbing coating of the present embodiment is:

[0045] a. milling carbon nanotubes and carbon black in a stainless steel ball mill for 3 hours according to the above ratio, to obtain a carbon black carbon nanotube mixture;

[0046] b. Dilute the epoxy resin with epoxy resin diluent in the stirred tank, and the epoxy resin diluent selects commercially available epoxy resin special diluent, and the carbon black nano-carbon tube mixture is added to the diluted epoxy resin In the process, add carbon nanotube dispersant, select carbon nanotube special dispersant of m...

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PUM

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Abstract

The invention provides an anti-radar coating, which comprises a carbon nanotube, a carbon nanotube dispersing agent, conductive carbon black, an epoxy resin, an epoxy resin diluent and an epoxy resin curing agent, wherein the carbon nanotube accounts for 5% to 20% of the mass of the epoxy resin. By using the anti-radar coating provided by the invention, the requirements of high absorption, excellent compatibility and wide frequency band can be met to the utmost extent, and the selectivity of electromagnetic parameters of the anti-radar coating can be improved, so that the application range of the anti-radar coating is wider.

Description

【Technical field】 [0001] The invention relates to the field of wave-absorbing materials, in particular to electromagnetic wave-absorbing coatings and preparation techniques thereof. 【Background technique】 [0002] At present, there are mainly the following types of absorbing coatings at home and abroad: [0003] Ferrite absorbing coating, ferrite is the earliest and relatively mature absorbing material, mainly including nickel-zinc ferrite, manganese-zinc ferrite and barium ferrite, etc., and its absorbing mechanism is magnetic domain natural resonance . Ferrite is divided into spinel type, garnet type and magnetoplumbite type, among which the hexagonal crystal magnetoplumbite type has the best microwave absorption performance, because the hexagonal crystal magnetoplumbite type ferrite It has a high magnetic anisotropy equivalent field, and its natural resonance frequency is high, showing excellent high-frequency absorbing performance. Its advantages are strong absorption...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/32C09D5/24
Inventor 刘若鹏赵治亚缪锡根曹燕归
Owner KUANG CHI INST OF ADVANCED TECH
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