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US 10,954,155 B2Granted
Composition and method for producing a molded body from a highly pure, transparent quartz glass by means of additive manufacturing
AssigneeKarlsruher Institut für Technologie
InventorsBastian Rapp, Frederik Kotz
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Abstract
The present invention relates to a composition and a process for the production of a molding made of high-purity transparent quartz glass, by means of additive manufacturing.
Claims20
A composition for the production of a molding made of high-purity transparent quartz glass, comprising the following components:
- at least one polymerizable organic binder which at room temperature is present in liquid form;
- a polymerization initiator or crosslinking agent, respectively, which, via supply of light or heat, initiates the polymerization or crosslinking of the at least one polymerizable organic binder;
- and
- at least one type of spherical quartz glass particles, which are present in dispersed form in the at least one polymerizable organic binder and have a diameter ranging from 7 to 100 nm.
1 more element
A process for the production of a molding made of high-purity transparent quartz glass, the process comprising the following steps:
- (a) providing the composition for the production of a molding made of high-purity transparent quartz glass in a device, the composition comprising:
- at least one polymerizable organic binder which at room temperature is present in liquid form;
- a polymerization initiator or crosslinking agent, respectively, which, via supply of light or heat, initiates the polymerization or crosslinking of the at least one polymerizable organic binder;
- at least one type of spherical quartz glass particles, which are present in dispersed form in the at least one polymerizable organic binder and have a diameter ranging from 7 to 100 nm;
- and
- an optional non-hardening component;
- (b) incompletely hardening the at least one polymerizable organic binder contained in the composition via supply of light or heat, whereby a green part is obtained as a primary structure;
- (c) separating non-hardened at least one polymerizable organic binder, inclusive of the components contained therein, from the primary structure;
- and optionally at least once repeating the steps (a), (b) and (c);
- (d) optionally post-treating the primary structure by at least one process selected from the group consisting of structuring by means of a forming tool, irradiating with high-energy radiation and subsequent developing, milling, drilling, laminating, bonding, grinding, polishing, lapping, engraving and treating with heat or laser light;
- (e) removing the non-hardenable component if present in the primary structure;
- (f) debinding the primary structure by thermal treatment, whereby a brown part is obtained as a porous secondary structure;
- (g) optionally filling up the porous secondary structure with at least one filler;
- and
- (h) sintering the porous secondary structure, whereby the molding is obtained.
12 more elements
Dependencies are inferred from the claim text.