四维打印多材料的原木和基里加米灵感的水凝自折叠结构
Divambal Appavoo1, Nilab Azim1,2, Maged Elshatoury1
1NanoScience Technology Center, University of Central Florida, Orlando, FL 32826, USA.
Materials (Basel, Switzerland)
|October 26, 2024
概括
这项研究展示了使用热反应性水凝进行4D打印. 通过将聚-N-iso-propylacrylamide (PNIPAM) 和聚乙烯甘 (PEG) 与kirigami切片相结合,研究人员在3D打印结构中实现了精确的形状变化.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 增材制造 增材制造 增材制造
背景情况:
- 四维 (4D) 打印建立在3D打印的基础上,使物体能够随着时间的推移而改变形状,以应对外部刺激.
- 响应刺激的聚合物是开发先进4D打印应用的自折叠结构的关键.
- 了解材料特性对于为特定应用设计定制的自折叠结构至关重要.
研究的目的:
- 研究热敏聚合物的4D打印自折叠水凝结构的使用.
- 设计和制造一个双层结构,使用聚N-异烯胺 (PNIPAM) 和聚乙烯糖醇 (PEG).
- 为了评估印刷结构的形状变化能力,以应对温度变化.
主要方法:
- 使用PNIPAM作为热反应层和PEG作为支层3D打印水凝样本.
- 多种材料双层系统的机械性能测试.
- 整合了基里加米灵感的切割,以诱导受控的折叠.
- 使用COMSOL Multiphysics®模拟的实验结果的验证.
主要成果:
- 成功制造了一种双层水凝结构,具有可调整的形状变换特性.
- 在温度变化时证明PNIPAM/PEG结构的曲和折叠.
- 基里加米切割有效地控制了4D打印对象的折叠行为.
- COMSOL模拟准确地预测了双层系统的折叠行为.
结论:
- 开发的双层PNIPAM/PEG系统为4D打印提供了出色的形状转换能力.
- 整合基里加米灵感的设计,可以精确控制结构的变化.
- 这种方法推进了对刺激有反应的自我折叠结构的设计和应用.
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