Nano TiO2-doped anti-ultraviolet para-aramid nano paper and preparation method thereof
US11339538B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2020 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Jul 17, 2040 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H23/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The disclosure discloses nano TiO2-doped anti-ultraviolet para-aramid nano paper and a preparation method thereof. First, nano TiO2 is selected as an ultraviolet absorbent which has a good absorption effect on ultraviolet rays, and the anti-ultraviolet characteristic of aramid paper-based material can be well improved through addition of nano TiO2. Second, macroscopic para-aramid fiber is dissolved under the action of a DMSO/KOH system, and the surface of the prepared aramid nano fiber is rich in C═O and N—H. This method is simple in process and does not harm the fiber itself, and can effectively improve the mechanical strength, interface binding performance and processability of a base material. The nano TiO2-doped anti-ultraviolet para-aramid nano paper prepared by the disclosure is simple in preparation process, excellent in material property.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.