Method of preparing hydrated calcium silicate nano-film
US11466361B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2019 |
| Grant date | Oct 11, 2022 |
| Priority date | — |
| Expiry date | Mar 31, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2237/332
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of preparing a hydrated calcium silicate (C—S—H) nano-film. The method includes: 1) synthesizing a hydrated calcium silicate powder having a calcium to silicon ratio (Ca/Si) of 0.5-3.0; 2) calcining the C—S—H powder obtained in 1) for 2-3 hours under a temperature of 150-250° C., cooling to approximately 25° C., and pressing the C—S—H powder under a pressure of 100-200 megapascal, to yield a target material; 3) fixing a substrate on a sample table of a magnetron sputtering apparatus, placing the target material obtained in 2) in a target position of the magnetron sputtering apparatus, pre-sputtering the target material for 5-10 minutes, rotating the substrate at a constant speed, sputtering the target material for 30-300 minutes, to yield a nano-film; and 4) soaking the nano-film obtained in 3) into in a saturated aqueous solution of calcium hydroxide at approximately 25° C. for 1-3 days.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.