Radar wave absorbing paint with hollow microsphere as filling material and preparation method thereof

A technology of hollow microspheres and wave-absorbing coatings, applied in radiation-absorbing coatings, fibrous fillers, chemical instruments and methods, etc., can solve problems such as poor high-temperature performance, poor acid and alkali resistance, and high density, and achieve improved combination force, increase the number, increase the stability and the effect of service life

Inactive Publication Date: 2008-10-29
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the surface is modified to achieve surface metallization, it is possible to solve the shortcomings of traditional absorbing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

Example 1:

Radar wave absorbing coatings are mixed according to the following mass percentages:

Epoxy silicone resin 40%;

The leveling agent is CAB-551-0.010.2%;

Thickener is 0.2% sodium polyacrylate;

40% of hollow microspheres covered with metal coating;

The solvent is the balance of xylene (C8H10).

In this example, the method of preparing the radar wave absorbing coating with hollow microspheres as the filler is to put (A) epoxy silicone resin and the hollow microspheres coated with a metal coating in a high-speed mixer at 1000r / min Under the conditions, stir for 15 minutes and take it out to obtain the first mixture; (B) Grind the first mixture in a three-roll mill for 15 minutes to obtain a second mixture with a particle size of 30 μm; (C) the second mixture, flow The leveling agent, thickening agent and solvent are put into a high-speed mixer, stirred for 15 minutes at 1000r / min, and then allowed to stand for 3 minutes to obtain radar wave absorbing paint. The radar wav...

Example Embodiment

Example 2:

Radar wave absorbing coatings are mixed according to the following mass percentages:

30% epoxy silicone resin;

The leveling agent is CAB-551-0.20.3%;

Thickener is 0.3% polyurethane;

50% of hollow microspheres covered with metal coating;

The solvent is a mixture of xylene and n-butanol with the remainder of the mixture.

Medium xylene is 60wt%, n-butanol is 40wt%

The method of preparing radar wave absorbing coating with hollow microspheres as filler is to put (A) epoxy silicone resin and hollow microspheres coated with metal coating in a high-speed mixer, and stir for 20min under 800r / min Then take it out to obtain a first mixture; (B) Grind the first mixture in a three-roll mill for 15 minutes to obtain a second mixture with a particle size of 40 μm; (C) second mixture, leveling agent, thickening The agent and solvent are put into a high-speed mixer, stirred for 20 minutes at 800r / min, and then stand for 5 minutes to obtain radar wave absorbing coatings. The radar...

Example Embodiment

Example 3:

Radar wave absorbing coatings are mixed according to the following mass percentages:

Epoxy silicone resin 35%;

Leveling agent is BYK3330.2%;

Thickener is RM-8W0.2%;

45% of hollow microspheres covered with metal coating;

The solvent is the balance of n-butanol.

The method of preparing the radar wave absorbing coating with hollow microspheres as filler is to put (A) epoxy silicone resin and hollow microspheres coated with metal coating in a high-speed mixer, and stir for 30min under the condition of 600r / min. Then take it out to obtain a first mixture; (B) Grind the first mixture in a three-roll mill for 20 minutes to obtain a second mixture with a particle size of 40 μm; (C) second mixture, leveling agent, thickening The agent and solvent are put into a high-speed mixer, stirred for 30 minutes at 600r / min, and then allowed to stand for 3 minutes to obtain radar wave absorbing paint. The radar wave absorbing paint prepared by the above method has a coating thickness...

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Abstract

The invention discloses a radar wave absorbing coating with the filler of hollow microsphere, which consists of epoxy-silicone resin 30 to 40wt%, a leveling agent 0.2 to 0.4wt%, a thickening agent 0.2 to 0.4wt%, hollow microsphere plated with metal coating 40 to 55wt%, and solvent being the rest. The radar wave absorbing coating with the hollow microsphere filler has the maximal absorptivity of 20 dB at the electromagnetic wave frequency band of 2 to 18 GHz, and has the frequency width of 5 GHz larger than 10 dB.

Description

A kind of radar wave absorbing coating with hollow microspheres as filler and preparation method thereof technical field The present invention relates to a radar wave-absorbing paint and a preparation method thereof, more particularly, to a radar wave-absorbing paint in which the surface of functionalized hollow microspheres is coated with a metal coating as a filler by using an electroless plating process. Background technique Hollow microsphere is a kind of inorganic powder. Compared with metal powder, it has lower density, high temperature resistance, strong acid and alkali resistance and oxidation resistance. If the surface is modified to achieve surface metallization, it is possible to solve the shortcomings of traditional absorbing materials such as high density, poor high temperature performance, oxidation resistance, and poor acid and alkali resistance. At present, the research on the surface modification of hollow microspheres to prepare lightweight radar absorbin...

Claims

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Application Information

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IPC IPC(8): C09D183/06C09D7/12C09D5/32C09C3/06C23C18/36C23C18/18
Inventor 肇研段跃新张桐梁振方张润罗云烽薛亚娟袁璐
Owner BEIHANG UNIV
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