Aramid paper coated with aramid nanofibers and a method of preparing the same
US11414817B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2020 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | Apr 14, 2041 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M2101/36
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of preparing an aramid paper coated with aramid nanofibers includes the following steps: (1) mixing a meta-aramid fibrid slurry and a chopped meta-aramid fiber slurry, filtering, pressing and drying to obtain a meta-aramid paper; (2) mixing potassium hydroxide, deionized water, dimethyl sulfoxide, and para-aramid nanofibers in a container, and stirring to obtain a para-aramid nanofiber coating solution; and (3) applying the para-aramid nanofiber coating solution to a first side of the meta-aramid paper, washing with deionized water, and drying; applying the para-aramid nanofiber coating solution to a second side of the meta-aramid paper, washing with deionized water, and drying; and hot pressing to obtain the aramid paper coated with aramid nanofibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.