Electromagnetic wave shielding material and sheet
Assignee3M Innovative Properties Company
InventorsHaruhiko Miyazawa, Haruyoshi Kakitani, Atsushi Toyota
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Abstract
An electromagnetic wave shielding material and a sheet using the same are described. Also described is a gel state electromagnetic wave shielding material including an ionic liquid, and fine particles capable of reflecting, suppressing or absorbing an electromagnetic wave suspended in the ionic liquid. The electromagnetic wave shielding material may provide both high electromagnetic interference shielding ability and flexibility when used in sheet form, and in some applications, may provide flame and heat resistance.
Claims8
A gel state electromagnetic wave shielding material comprising an ionic liquid containing an anion selected from the group consisting of phosphate, phosphonate, phosphinate, and borate, and an effective amount of magnetic fine particles dispersed in the ionic liquid to render the gel state material sufficiently solid to be formed permanently into a sheet.
Dependencies are inferred from the claim text.