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Fast-curing radar wave absorbing putty, preparation method and applications thereof

A wave-absorbing putty and rapid curing technology, which is applied in chemical instruments and methods, other chemical processes, filling slurries, etc., can solve problems such as hardening and brittleness, changing electromagnetic properties, and materials becoming soft and sticky. The effects of microwave absorption and mechanical properties, fast curing speed and strong adhesion

Inactive Publication Date: 2020-02-28
AEROSPACE SCI & IND WUHAN MAGNETISM ELECTRON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the absorbing paint is applied on the surface of the aircraft, it will be damaged by direct and long-term exposure to the natural environment during normal use; on the other hand, due to the special operational requirements of stealth aircraft, it will also subjected to various extreme conditions
Especially because the base material of the coating is a high molecular polymer, it will age under the action of various natural and unnatural factors. The material may become soft and sticky, or hard and brittle, or even change the electromagnetic properties, thus affecting The overall use effect and service life of the wave-absorbing coating have seriously affected the stealth performance and combat capability of the equipment

Method used

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  • Fast-curing radar wave absorbing putty, preparation method and applications thereof

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Effect test

Embodiment 1

[0036] A kind of fast-curing radar wave-absorbing putty of the present embodiment, described fast-curing radar wave-absorbing putty, is made of 23g epoxy resin, 21g polyurethane modified epoxy resin, 3.5g anti-sag additive, 197g radar wave absorber and 8g curing agent composition;

[0037] Wherein: the anti-sag additive contains polyamide wax; the radar wave absorber contains carbonyl iron, ferrosilicate, and ferrosilicon chromium powder; the curing agent contains 3,5-dimethylthiotoluenediamine.

[0038] The above-mentioned fast-curing radar absorbing putty is prepared by the following method, and the steps are as follows:

[0039] (1) Add 23g of epoxy resin, 21g of polyurethane modified epoxy resin, and 3.5g of anti-sag additive into the beaker, and stir it with a high-speed mixer, and set the stirring speed at 800-1000rpm;

[0040] (2) After stirring for 60 minutes, set the speed to 500-600rpm, slowly add 197g of radar wave absorber and 8g of curing agent, after adding the ...

Embodiment 2

[0043] A kind of fast-curing radar wave-absorbing putty of the present embodiment, described fast-curing radar wave-absorbing putty, is made of 47g epoxy resin, 42g polyurethane modified epoxy resin, 7g anti-sag additive, 395g radar wave absorber and 16g Curing agent composition;

[0044] Among them: the anti-sag additive contains BYK-410 thixotropic anti-settling agent, the radar wave absorber contains carbonyl iron, iron silicon chromium powder; the curing agent contains 3,5-dimethylthiotoluenediamine and 3,5-Diethyltoluenediamine.

[0045] The above-mentioned fast-curing radar absorbing putty is prepared by the following method, and the steps are as follows:

[0046] (1) Add 47g of epoxy resin, 42g of polyurethane modified epoxy resin, and 7g of anti-sag additive into the beaker, and stir it with a high-speed mixer, and set the stirring speed at 800-1000rpm;

[0047] (2) After stirring for 60 minutes, set the speed to 500-600rpm, slowly add 395g of radar wave absorber and...

Embodiment 3

[0051] A kind of fast-curing radar wave-absorbing putty of the present embodiment, described fast-curing radar wave-absorbing putty, is made of 72g epoxy resin, 64g polyurethane modified epoxy resin, 14g anti-sag additive, 840g radar wave absorber and 24g Curing agent composition;

[0052] Wherein: the anti-sag additive contains polyamide wax; the radar wave absorber contains carbonyl iron and iron silicon chromium powder; the curing agent contains 3,5-diethyltoluene diamine.

[0053] The above-mentioned fast-curing radar absorbing putty is prepared by the following method, and the steps are as follows:

[0054] (1) Add 72g of epoxy resin, 64g of polyurethane modified epoxy resin, and 14g of anti-sag additive into the beaker, and stir it with a high-speed mixer, and set the stirring speed at 800-1000rpm;

[0055] (2) After stirring for 60 minutes, set the speed to 500-600rpm, slowly add 840g of radar wave absorber and 24g of curing agent, after adding the radar wave absorber ...

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Abstract

The invention discloses fast-curing radar wave absorbing putty, a preparation method and applications thereof, wherein the putty is prepared from two components, and specifically comprises, by weight,8.0-9.0% of an adhesive A, 7.0-8.0% of an adhesive B, 78.0-83.0% of a radar wave absorbent, 1.0-2.0% of an additive, and 2.0-3.0% of a curing agent. The preparation method comprises: adding the adhesive A, the adhesive B and the additive into a beaker according to the formula ratio, uniformly stirring, adding the radar wave absorbent and the curing agent, and continuously stirring to obtain the quick-curing radar wave absorbing putty. According to the invention, the quick-curing radar wave absorbing putty coating is obtained through a blade coating process, and has characteristics of good radar wave absorbing performance, high curing speed and good flexibility.

Description

technical field [0001] The invention belongs to the field of electromagnetic wave absorbing materials, in particular to a fast-curing radar absorbing putty and its preparation method and application. Background technique [0002] Stealth is one of the main design features of aircraft. As an important component of the stealth material system, wave-absorbing coatings have become an important means of stealth due to their good conformability and high cost performance. They are widely used in aircraft, missiles, and ground weapons. Equipment and other surfaces have greatly improved the penetration and survivability of weapons and equipment. However, since the absorbing paint is applied on the surface of the aircraft, it will be damaged by direct and long-term exposure to the natural environment during normal use; on the other hand, due to the special operational requirements of stealth aircraft, it will also Subject to various extreme conditions. Especially because the base ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/34C09K3/00
CPCC09D5/34C09K3/00
Inventor 王浩继王建国程文
Owner AEROSPACE SCI & IND WUHAN MAGNETISM ELECTRON
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