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Bamboo carbon nanotube composite coating type absorbing material and preparation method thereof

A technology of nanotube composite and wave-absorbing materials, which is applied in the fields of composite wave-absorbing materials and their preparation, polymers containing bamboo carbon nanotubes and their coatings and their preparation, and can solve problems such as narrow frequency and small wave-absorbing peaks , to achieve the effects of enhanced absorbing strength, excellent electrical conductivity, and reduced volume resistance

Inactive Publication Date: 2011-11-09
WUXI BIOX ENVIRONMENTAL MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of the wave-absorbing material made of it is that the wave-absorbing peak is small and the frequency is narrow.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Soak the nano-bamboo carbon powder in 10% potassium permanganate solution for oxidation treatment, the soaking time is 2 hours; (2) vacuum dry the soaked matter to obtain potassium permanganate modified nano-bamboo carbon powder, the drying temperature is 45 ℃.

Embodiment 2

[0023] Soak the nano-bamboo carbon powder in 20% potassium permanganate solution for oxidation treatment, and the soaking time is 8 hours; (2) vacuum-dry the soaked matter to obtain potassium permanganate-modified nano-bamboo carbon powder, and the drying temperature is 75 ℃.

Embodiment 3

[0025] 10% of bamboo carbon nanotubes and 90% of polyamide after vacuum drying were successively added to a high-speed mixer, and then extruded through a twin-screw extruder to prepare a length, width, and height of 10mm*10mm*1.5 mm flakes. This material has a peak at 15.2GHz, and the reflectance is -1.3dB. The average particle size is 5nm potassium permanganate modified nano-bamboo carbon powder 15%, varnish 60%, manganese-nickel-ferrite 25% preparation Then spray the paint on the surface of the above material with a thickness of 1 μm. After the material is coated, the shape of the absorbing curve of the material is basically unchanged, but the position of the peak changes, and a peak appears at 13.78GHz. -1.8dB.

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Abstract

The invention relates to a composite coating type absorbing material and a preparation method thereof. The material comprises a carrier part and a coating part. The carrier part comprises 50-90wt% of polymer and 10-50wt% of bamboo carbon nanotube; and the coating part comprises but not be limited to the following ingredients: 30-80wt% of paint, 5-30wt% of modified nano bamboo carbon, and 5-42wt% of manganese-nickel-ferrite. The material can be used in the industries of military, communication and the like, with improving the performance of weapon and eliminating the damage of radiation (e.g. cellular radiation) to human health.

Description

Technical field: [0001] The present invention relates to a kind of composite wave-absorbing material and preparation method thereof, particularly to a polymer containing bamboo carbon nanotubes and its coating (polymer containing modified nano-bamboo carbon, manganese-nickel-ferrite) and its preparation method. It belongs to the technical field of wave-absorbing materials. Background technique: [0002] In recent years, with the rapid development of science and technology such as radar, microwave communication and electronic countermeasures, the application of microwave absorbing materials has become increasingly widespread, and has attracted more and more attention from the majority of material science researchers. Absorbing material is a type of material that can absorb electromagnetic wave energy projected onto its surface and convert it into heat energy through material loss. In application, in addition to requiring the absorbing material to have a high absorption rate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B33/00C09D7/12C08L23/06C08L23/12C08L77/00C08L23/22C08L23/16C08L79/02C08L65/00C08L79/04C08K9/02C08K3/04B05D3/02
Inventor 王沁夏涛
Owner WUXI BIOX ENVIRONMENTAL MEDICINE
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