Cement-based direct ink for 3D printing of complex architected structures
US10913683B2 · kind B2 · utility
4Cited by
4References
22Claims
0Family size
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Key dates
| Filing date | Oct 8, 2019 |
| Grant date | Feb 9, 2021 |
| Priority date | — |
| Expiry date | Oct 8, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/00181
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Provide is a cement ink for a cement ink for 3D printing (which also includes additive manufacturing) of 3D cement structures and materials. The cement ink includes an American Petroleum Institute (API) Class G cement, a nano-clay, a superplasticizer, a hydroxyethyl cellulose, and a defoamer. The nano-clay may be hydrophilic bentonite. The superplasticizer may be a polycarboxylate ether. The defoamer may be 2-ethyl-1-hexanol. Processes for forming the cement ink and printing 3D cement structures using the cement ink are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.