Electromagnetic wave shielding molded article
US12122900B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2018 |
| Grant date | Oct 22, 2024 |
| Priority date | — |
| Expiry date | Dec 29, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/3233
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided is an electromagnetic wave shielding and absorbing molded article which has an excellent shielding property and absorbency of electromagnetic waves of specific frequencies. The electromagnetic wave shielding and absorbing molded article includes a thermoplastic resin composition containing a thermoplastic resin and carbon fibers. The carbon fibers have a weighted average fiber length in the molded article in a range from 0.05 to 8.0 mm, and the content ratio of the carbon fibers in the molded article is from 0.05 to 45 mass %. The electromagnetic wave shielding and absorbing molded article has a thickness from 0.01 mm to 5 mm, a shielding property of 10 dB or greater and an absorbency of 5% or greater for electromagnetic waves having any frequency in a frequency domain from 59 GHz to 100 GHz.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.