材料科学
多孔性
3D打印
乳状液
软机器人
制作
立体光刻
3d打印机
复合材料
聚氨酯
多孔介质
3d打印
纳米技术
机械工程
化学工程
计算机科学
生物医学工程
执行机构
人工智能
工程类
医学
替代医学
病理
作者
Ouriel Yossef Bliah,Seonggun Joe,Roei Reinberg,Anderson Brazil Nardin,Lucia Beccai,Shlomo Magdassi
出处
期刊:Materials horizons
[The Royal Society of Chemistry]
日期:2023-01-01
卷期号:10 (11): 4976-4985
被引量:3
摘要
UV-curable 3D printing compositions for the fabrication of stretchable and flexible porous structures for soft robotics are presented. The stereolithography-based printing compositions are water-in-oil (W/O) emulsions in which water droplets are the pore-forming material, and the continuous phase is a stretchable polyurethane diacrylate (PUA). The porosity of the printed objects is controlled by the material's micro-porosity and by the macro-porosity obtained by a cellular design. The mechanical behavior can be tailored by the composition of the emulsion, providing both compliance and strength while utilizing a unique optimization methodology for fitting the ink to the 3D printer. This approach enables developing materials having superior mechanical properties, with the highest reported elongation-at-break for 3D printed porous structures, 450%. The emulsion-based printing compositions were utilized for fabricating a soft robotic gripper with unique actuation performance that could not be obtained with commonly used materials.
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