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Conductive polymer wave-absorption sponge and preparation method thereof

A conductive polymer, polyurethane sponge technology, applied in the field of conductive polymer absorbing sponge, can solve the problem of not eradicating electromagnetic waves, and achieve the effects of excellent broadband absorbing performance, low cost and simple process

Inactive Publication Date: 2018-09-18
南京恒新新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Electromagnetic shielding and absorption methods are the main methods of protecting electromagnetic radiation, and the shielding method only reflects electromagnetic waves back, and does not eradicate electromagnetic waves.

Method used

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  • Conductive polymer wave-absorption sponge and preparation method thereof
  • Conductive polymer wave-absorption sponge and preparation method thereof
  • Conductive polymer wave-absorption sponge and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1 of the present invention, a preparation method of conductive polymer wave-absorbing sponge, it specifically comprises the following steps:

[0031] S1. Cut the polyurethane foam sponge with a thickness of 1cm into 18×18cm squares, then soak it in 270g / L FeCl3.6H2O solution for 10 minutes, squeeze the sponge to recover most of the FeCl3.6H2O solution, and place the squeezed sponge in a vacuum Vacuum drying at a temperature of 30-50°C in a drying oven to obtain a polyurethane sponge that adsorbs FeCl3.6H2O;

[0032] S2. Put the polyurethane sponge obtained in step 1 into a vacuum heating box, and put it into an open bottle filled with pyrrole monomer, keep the vacuum at 0.01MPa, control the temperature at 30°C, and deposit for 2 hours to obtain a conductive polymer. Absorbing sponge sample 1;

Embodiment 2

[0033] Embodiment 2 of the present invention, a preparation method of a conductive polymer wave-absorbing sponge, specifically comprises the following steps:

[0034] S1. Cut the polyurethane foam sponge with a thickness of 1cm into 18×18cm squares, then soak it in 228g / L ammonium persulfate solution for 10 minutes, squeeze the sponge to recover most of the FeCl3.6H2O solution, and put the squeezed sponge in Vacuum drying at a temperature of 30-50°C in a vacuum drying oven to obtain a polyurethane sponge that adsorbs FeCl3.6H2O;

[0035] S2. Put the polyurethane sponge obtained in step 3 into a vacuum heating box, and put it into an open bottle filled with pyrrole monomer, keep the vacuum at 0.01MPa, control the temperature at 30°C, and deposit for 24 hours to obtain a conductive polymer Absorbing sponge sample 2;

Embodiment 3

[0036] Embodiment 3 of the present invention, a preparation method of a conductive polymer wave-absorbing sponge, specifically comprises the following steps:

[0037] S1. Cut the polyurethane foam sponge with a thickness of 2cm into 18×18cm squares, then soak it in 270g / L FeCl3.6H2O solution for 10 minutes, squeeze the sponge to recover most of the FeCl3.6H2O solution, and place the squeezed sponge in a vacuum Vacuum drying at a temperature of 30-50°C in a drying oven to obtain a polyurethane sponge that adsorbs FeCl3.6H2O;

[0038] S2. Put the polyurethane sponge obtained in step 1 into a vacuum heating box, and put it into an open bottle filled with 3,4-ethylenedioxythiophene, keep the vacuum at 0.01MPa, control the temperature at 30°C, and the deposition time for 12 hours , to obtain conductive polymer wave-absorbing sponge sample 3;

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Abstract

The invention discloses a conductive polymer wave-absorption sponge and a preparation method thereof. The conductive polymer wave-absorption sponge is prepared from conductive polymers and polyurethane foamed sponge, wherein the surface of a network framework of the polyurethane foamed sponge is coated with the conductive polymers. According to the conductive polymer wave-absorption sponge and thepreparation method thereof disclosed by the invention, by using the polyurethane foamed sponge as a framework, the conductive polymer wave-absorption sponge is prepared through a gas-phase monomer oxidative polymerization deposition method, so that the properties of flexibility, the porosity and the lightweight of the polyurethane sponge can be maintained, and the electromagnetic property of theconductive polymers is developed, and further, the excellent wide-frequency wave-absorption performance is shown. The preparation method disclosed by the invention has the advantages of simple processand low cost, and is suitable for industrial production.

Description

technical field [0001] The invention relates to the field of conductive polymer wave-absorbing sponge, in particular to a conductive polymer wave-absorbing sponge and a preparation method thereof. Background technique [0002] With the rapid development of electronic information technology, more and more electronic products are used in people's production and life, such as high-frequency heating furnaces, microwave generators, computers, and radio, radar and other transmitting devices. The use of these electronic devices will produce electromagnetic radiation to varying degrees, which will not only interfere with the normal operation of electrical equipment, but also pose a serious threat to human health. Big public nuisance. In addition, information security problems caused by electromagnetic wave leakage can also directly threaten the country's political, economic, and military security. Therefore, the problem of electromagnetic interference has become a severe problem f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/40C08L75/04C08L79/04
CPCC08J9/40C08J9/405C08J2375/04C08J2479/04
Inventor 吴凡谢阿明
Owner 南京恒新新材料有限公司
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