Abstract
Hybrid organic–inorganic sol gel inks that can undergo both condensation and radical polymerization are developed, enabling fabrication of complex objects by additive manufacturing technology, yielding 3D objects with superior properties. The 3D objects have very high silica content and are printed by digital light processing commercial printers. The printed lightweight objects are characterized by excellent mechanical strength compared to currently used high‐performance polymers (139 MPa), very high stability at elevated temperatures (heat deflection temperature >270 °C), high transparency (89%), and lack of cracks, with glossiness similar to silica glasses. The new inks fill the gap in additive manufacturing of objects composed of ceramics only and organic materials only, thus enabling harnessing the advantages of both worlds of materials.
Highlights
High transparency (89%), and lack of cracks, with glossiness similar to silica glasses
The new inks fill the gap in additive manufacturing of objects composed of ceramics only and organic materials only, enabling harnessing the advantages of both worlds of materials
For the radical polymerization initiated by a UV light source at enables fabrication of complex structures and 3D objects, com- the Digital light processing (DLP) printer, there is a need for organic photopolymerizable posed of a variety of materials
Summary
To demonstrate this excellent property, we printed objects using our ink (at the same aging process), and high-temperature commercial inks (Stratasys High Temperature, and Asiga fusionGRAY[27]), and tested their thermal stability by placing 50 g weight and heating to 270 °C for 2 h.
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