Journal
POLYMERS
Volume 14, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/polym14071323
Keywords
additive manufacturing; silicone rubber; heating-assisted; manufacturing fidelity
Categories
Funding
- National Natural Science Foundation of China [51875253]
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This study proposed a heating-assisted direct writing printing method for commercial silicone rubber materials, aiming to enhance the fidelity of silicone foam preparation. Experimental results showed that the addition of a thermal field significantly improved the collapse of silicone rubber filaments, thereby enhancing the mechanical properties and manufacturing stability of silicon foams.
In response to the fact that most of the current research on silicone 3D printing suffers from structure collapse and dimensional mismatch, this paper proposes a heating-assisted direct writing printing method for commercial silicone rubber materials for preparing silicone foam with enhanced fidelity. In the experimental processes, the effects of substrate temperature, printing pressure, and printing speed on the filament width were investigated using a controlled variable method. The results showed the following: (1) the diameter of silicone rubber filaments was positively correlated with the printing pressure and substrate temperature, but negatively correlated with the printing speed; (2) the filament collapse of the large filament spaced foams was significantly improved by the addition of the thermal field, which, in turn, improved the mechanical properties and manufacturing stability of the silicon foams. The heating-assisted direct writing process in this paper can facilitate the development of the field of microelectronics and the direct printing of biomaterials.
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