Photo-curable liquid composition for additive manufacturing of ceramic
AssigneeRaytheon Technologies Corporation
InventorWayde R. Schmidt
Life of this patent
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Abstract
A photo-curable liquid composition for additive manufacturing of silicon-containing carbide ceramic includes a polymethylvinylsilane (PMVS) resin that has photo-reactivity over a first photo-wavelength absorption range and a photo-initiator additive mixed with the PMVS resin. The photo-initiator additive has photo-reactivity over a second photo-wavelength absorption range that has an overlapping wavelength range with the first photo-wavelength absorption range. The PMVS and the photo-initiator additive are reactive to polymerize upon exposure to radiation having a wavelength in the overlapping wavelength range.
Claims19
A photo-curable liquid composition for additive manufacturing of silicon-containing carbide ceramic, the composition comprising a polymethylvinylsilane (PMVS) resin having photo-reactivity over a first photo-wavelength absorption range and a photo-initiator additive mixed with the PMVS resin, the photo-initiator additive having photo-reactivity over a second photo-wavelength absorption range that has an overlapping wavelength range with the first photo-wavelength absorption range, the PMVS and the photo-initiator additive of the composition being reactive to polymerize upon exposure to radiation having a wavelength in the overlapping wavelength range.
A photo-curable liquid composition for additive manufacturing of silicon-containing carbide ceramic, the composition comprising:
- 90 to 99.9 parts by weight of a polymethylvinylsilane (PMVS) resin;
- and
- 0.1 to 10 parts by weight of a photo-initiator additive mixed with the PMVS resin.
A method for additive manufacturing of silicon-containing carbide ceramic, the method comprising:
- providing a photo-curable liquid composition comprising a polymethylvinylsilane (PMVS) resin having photo-reactivity over a first photo-wavelength absorption range and a photo-initiator additive mixed with the PMVS resin, the photo-initiator additive having photo-reactivity over a second photo-wavelength absorption range that has an overlapping wavelength range with the first photo-wavelength absorption range;
- curing the composition by exposing the composition to radiation having a wavelength in the overlapping wavelength range;
- and
- pyrolyzing the cured composition to form silicon-containing carbide ceramic.
Dependencies are inferred from the claim text.