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橡塑技术与装备 CHINA RUBBER/PLASTICS TECHNOLOGY AND EQUIPMENT

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Electromagnetic shielding properties of carbon nanotube/polyvinyl
alcohol composites

Kang Yong

(Yulin Kangnaiya New Material Technology Co. LTD., Yulin 718100, China)
Abstract: This paper develops a series of experiments based on the understanding of the properties
of polyvinyl alcohol and multi-walled carbon nanotubes. Aims to make a composite material with
electromagnetic shielding properties. Carbon nanotubes have extremely high strength and excellent
electrical conductivity, and are ideal fillers for polymer matrix composites. The addition of carbon nanotubes
to polyvinyl alcohol can not only improve the strength of the polymer, but also effectively improve its electrical
conductivity. To sum up, the author designed and experimented the research topic of electromagnetic
shielding performance of carbon nanotube/PVA composite material, in order to understand whether it has
a broad application prospect. Multi-walled carbon nanotubes were added to polyvinyl alcohol to make
composite materials, and then its electromagnetic shielding effect was studied. This paper starts from the
film formation of polyvinyl alcohol, and then systematically studies its electromagnetic shielding efficiency
according to the mechanism of electromagnetic wave shielding. Multi-walled carbon nanotubes/PVA wave-
absorbing composites were prepared with multi-walled carbon nanotubes as absorbent and polyvinyl alcohol
as matrix.
Key words: electrical conductivity; electromagnetic shielding; composite material; multi-walled carbon
nanotubes; polyvinyl alcohol
（R-03）

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