Metal Oxide Nanoparticle Fusing Agents for 3D Printing
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Solution Overview
Problem
Existing 3D printing technologies face limitations in producing functional parts with desired properties such as mechanical strength and visual appearance due to the limited range of materials used, which hinders their adoption in commercial production.
Innovation Solution
The use of multi-fluid kits and systems for three-dimensional printing that incorporate a fusing agent containing metal oxide nanoparticles, such as titanium dioxide, zinc oxide, or cerium oxide, which selectively absorb UV radiation to fuse polymer particles, allowing for the creation of clear or colored 3D printed articles with improved mechanical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional 3D printing materials are used, then the printing process is simple, but the mechanical strength and visual appearance of the printed parts are insufficient
Solution Approach 1:
The patent uses composite materials by combining polymer particles with metal oxide nanoparticles (titanium dioxide, zinc oxide, cerium oxide) in the fusing agent. This composite approach enables the printed parts to achieve enhanced mechanical strength and visual appearance properties while maintaining the simplicity of the 3D printing process.
Solution Approach 2:
The patent changes the optical and thermal parameters of the fusing agent by incorporating metal oxide nanoparticles with specific absorption characteristics. These parameter changes allow selective absorption of UV radiation, enabling precise control over the fusing process and improving the quality of the printed parts.
2Use of energy by moving object
If metal oxide nanoparticles are added to the fusing agent, then the energy efficiency and selectivity of the printing process are improved, but the material composition becomes more complex
Solution Approach 1:
The metal oxide nanoparticles are strategically incorporated into the fusing agent to provide localized optical absorption properties. This local quality enhancement allows selective absorption of UV radiation at specific wavelengths, improving energy efficiency and process selectivity without requiring complex system modifications.
Solution Approach 2:
The metal oxide nanoparticles act as intermediaries that absorb UV radiation and convert it to thermal energy, facilitating the fusing process. This intermediary mechanism improves energy efficiency by enabling selective and controlled heating of the polymer particles during printing.
3Productivity
If a broad spectrum UV source is used, then the printing speed is high, but the selectivity and precision of the fusing process deteriorate
Solution Approach 1:
The metal oxide nanoparticles provide local quality enhancement by selectively absorbing specific wavelengths of UV radiation. This selective absorption enables precise control over the fusing process, maintaining high printing speed while improving fusing selectivity and precision through wavelength-specific energy absorption.
Data Source
AI summary
This disclosure describes multi-fluid kits for three-dimensional printing, three-dimensional printing kits, and systems for three-dimensional printing. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and a detailing agent. The fusing agent can include water and metal oxide nanoparticles dispersed therein. The metal oxide nanoparticles can be selected from titanium dioxide, zinc oxide, cerium oxide, indium tin oxide, or a combination thereof. The metal oxide nanoparticles can have an average particle size from about 2 nm to about 500 nm. The detailing agent can include a detailing compound.