Paper-based electromagnetic shielding composite with flame retardant properties and its preparation method and application
US12385186B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 30, 2023 |
| Grant date | Aug 12, 2025 |
| Priority date | — |
| Expiry date | Feb 13, 2044 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H27/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Disclosed are a paper-based electromagnetic shielding composite with flame retardant properties and its preparation method and application, belonging to the technical field of electromagnetic shielding. In the present disclosure, PI fibers are modified by polydopamine and grafted with carbon nanotubes, polyimide fiber paper is prepared by a wet papermaking technology, an in-situ synthesis method is used to enable conductive MOFs and polymer PPy to grow on the fiber paper, and finally polyimide resin is sprayed onto the paper to prepare the paper-based electromagnetic shielding composite with flame retardant properties. The method is simple in process without complex synthesis equipment, and solves the problems that polyimide fiber paper is poor in paper forming property and paper mechanical property, and carbon nanotubes are easy to agglomerate in paper and limited in addition amount in the prior art. The paper-based composite has good mechanical property, heat resistance, flame retardancy and electromagnetic shielding performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.