Water-adaptive cement self-healing system, preparation method and application thereof
US12049425B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2023 |
| Grant date | Jul 30, 2024 |
| Priority date | — |
| Expiry date | Aug 28, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2103/40
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A water-adaptive cement self-healing system, a preparation method and an application thereof are provided. A pH-triggered shell curing agent, an inorganic nano-emulsifier, and a polysaccharide shell material are added into deionized water to obtain an aqueous phase; an active diluent of epoxy is added to an epoxy to obtain a first oil phase; the aqueous phase is mixed with the first oil phase to obtain an oil/water emulsion; a surfactant is added into paraffin oil to obtain a second oil phase; the second oil phase is mixed with the oil/water emulsion to obtain an oil/water/oil emulsion; an acidic liquid is added into the oil/water/oil emulsion dropwise to obtain a solid, followed by centrifuging, washing, and freeze-drying to obtain a self-healing capsule; and then an epoxy curing agent is mixed with the self-healing capsule to obtain the water-adaptive cement self-healing system based on an oil/water/oil double-emulsion template.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.