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Electronically-controlled intelligent wave absorbing coating material containing core-shell wave absorbing particles

A wave-absorbing coating and core-shell type technology, applied in the field of wave-absorbing materials, can solve the problems of narrow wave-absorbing frequency band, lack of intelligence, and unsatisfactory performance, and achieve the effect of enhancing wave-absorbing performance and efficiently regulating absorption frequency

Active Publication Date: 2018-06-29
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the gradual deepening of research work in related fields, the performance improvement space of traditional microwave-absorbing materials is getting smaller and smaller. , controllability and other aspects have great limitations, do not have intelligence, especially can not meet the information warfare with the rapid update of electronic detection technology

Method used

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  • Electronically-controlled intelligent wave absorbing coating material containing core-shell wave absorbing particles
  • Electronically-controlled intelligent wave absorbing coating material containing core-shell wave absorbing particles
  • Electronically-controlled intelligent wave absorbing coating material containing core-shell wave absorbing particles

Examples

Experimental program
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Effect test

Embodiment 1

[0036] For the electronically controlled intelligent wave-absorbing coating material containing core-shell type wave-absorbing particles provided in this example, the raw materials of the wave-absorbing coating material include the following components by mass percentage: polyol 36.2%, core-shell type wave-absorbing particles 60%, diisocyanate 3.5%, stabilizer 0.3%;

[0037] Among them: the core-shell type wave-absorbing particles are composed of barium titanate and carbonyl iron powder, with carbonyl iron powder as the core and barium titanate as the shell; the carbonyl iron powder is spherical, and its average particle size is 6μm (see Figure 4 ); the polyol is castor oil; the diisocyanate is diphenylmethane diisocyanate MDI; the stabilizer is zinc oxide.

[0038] In this embodiment, the preparation method of the core-shell type wave-absorbing particles includes the following steps (for the preparation flow chart, see figure 1 , the schematic diagram of the preparation pr...

Embodiment 2

[0047] The electronically controlled intelligent wave-absorbing coating material containing core-shell type wave-absorbing particles provided in this example, the raw materials of the wave-absorbing coating material include the following components by mass percentage: polyol 14%, core-shell type wave-absorbing particles 80%, diisocyanate 5.7%, stabilizer 0.3%;

[0048] Among them: the core-shell type wave-absorbing particles are composed of barium titanate and carbonyl iron powder, with carbonyl iron powder as the core and barium titanate as the shell; the carbonyl iron powder is spherical, and its average particle size is The polyol is castor oil; the diisocyanate is diphenylmethane diisocyanate MDI; the stabilizer is zinc oxide.

[0049] In this embodiment, the preparation method of the core-shell type wave-absorbing particles includes the following steps:

[0050] (1) According to the molar ratio of butyl titanate and barium acetate as 1:1, take the aqueous solution of bar...

Embodiment 3

[0057] The electronically controlled intelligent wave-absorbing coating material containing core-shell type wave-absorbing particles provided in this example, the raw materials of the wave-absorbing coating material include the following components by mass percentage: polyol 75%, core-shell type wave-absorbing particles 22%, diisocyanate 2.9%, stabilizer 0.1%;

[0058] Among them: the core-shell type wave-absorbing particles are composed of barium titanate and carbonyl iron powder, with carbonyl iron powder as the core and barium titanate as the shell; the carbonyl iron powder is spherical, and its average particle size is The polyol is castor oil; the diisocyanate is diphenylmethane diisocyanate MDI; the stabilizer is zinc oxide.

[0059] In this embodiment, the preparation method of the core-shell type wave-absorbing particles includes the following steps:

[0060] (1) According to the molar ratio of butyl titanate and barium acetate as 1:1, take the aqueous solution of bar...

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Abstract

The invention provides an electronically-controlled intelligent wave absorbing coating material containing core-shell wave absorbing particles. Raw materials of the wave absorbing coating material contain, by mass, 14-75% of polyol, 22-80% of the core-shell wave absorbing particles, 1-6.5% of diisocyanate and 0.1-0.3% of a stabilizer, and the sum of the percentages of all the raw materials is 100%. The interaction of all the raw materials cooperates with a reasonable preparation method, so the electronically-controlled intelligent wave absorbing coating material capable of realizing high-efficiency regulation of the absorption frequency, the bandwidth and the intensity through an electric field is prepared, the shift of the absorbing frequency range and the change of the absorbing intensity are realized according to stealth demands, and the material can be used in civil electronic devices, and also can be used in the military field.

Description

technical field [0001] The invention relates to the field of wave-absorbing materials, in particular to an electronically controlled intelligent wave-absorbing coating material containing core-shell type wave-absorbing particles whose absorption peak frequency, frequency band and intensity can be regulated by an electric field. Background technique [0002] The absorbing material is a functional material that can make the incident electromagnetic wave enter the material to the maximum extent, and can effectively absorb it, convert it into heat energy and other forms of energy and lose it or make the electromagnetic wave disappear due to interference. They have important applications in electronic countermeasure technology and are an effective measure for false anti-radar. At the same time, it is also widely used in preventing the leakage of various electromagnetic wave sources and harming the human body. However, with the gradual deepening of research work in related fields...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D5/32C09D5/30C09D7/61
CPCC08K2003/2296C09D5/30C09D5/32C09D175/14C08K7/18C08K3/22
Inventor 余淼王丽蕊浮洁杨平安
Owner CHONGQING UNIV
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