Electromagnetic wave absorption material and electromagnetic wave absorber
US11235560B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2016 |
| Grant date | Feb 1, 2022 |
| Priority date | — |
| Expiry date | Jan 31, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/041
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An electromagnetic wave absorption material comprises: fibrous carbon nanostructures; and an insulating material, wherein a content C of the fibrous carbon nanostructures when a content of the insulating material is 100 parts by mass is 5 parts by mass or more and 15 parts by mass or less, or, in the case where the fibrous carbon nanostructures are fibrous carbon nanostructures that exhibit a convex upward shape in a t-plot obtained from an adsorption isotherm, the content C is 0.3 parts by mass or more and 0.8 parts by mass or less, and the electromagnetic wave absorption material absorbs an electromagnetic wave in a frequency domain of more than 20 GHz.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.