3D打印的月球规石模拟剂复合材料的热气候变化
Alexandra Marnot1, Jami Milliken2, Jaehyun Cho1
1School of Chemical and Biomolecular Engineering, Georgia Tech, Atlanta, Georgia 30332, United States.
ACS applied engineering materials
|August 29, 2024
概括
在-30°C下打印并循环到极端温度的月球 regolith 复合材料在物理和化学上降解. 聚合物特性在恶劣的月球条件下显著影响机械性能,影响基础设施发展.
科学领域:
- 材料科学 材料科学 材料科学
- 添加剂制造 添加剂制造 添加剂制造
- 太空工程 太空工程
背景情况:
- 月球规质复合材料提供了在现场资源利用的潜力.
- 增材制造,如直接墨水写作,是生产这些复合材料的关键.
- 恶劣的月球热条件对3D打印的聚合物复合材料构成重大挑战.
研究的目的:
- 研究聚合物特性对在极端热循环下月球 regolith复合材料性能的影响.
- 了解3D打印和月球表面使用过程中的降解机制.
- 为了帮助开发可靠的月球基础设施,使用 regolith 复合材料.
主要方法:
- 用月球高地 regolith模拟剂和UV可固化的粘合剂创建的复合材料.
- 在-30°C下打印复合材料.
- 印刷复合材料经过127°C至190°C之间的热循环.
主要成果:
- 热循环诱导了物理降解 (增加硬度,多孔性) 和化学降解 (变黄色).
- 降解机制涉及化学变化和残留聚合物之间的竞争.
- 由于部分单体结晶,在30°C的初始固化过程中观察到较低的乙烯基键转化.
结论:
- 极端的热循环显著降解了月球正岩复合材料.
- 聚合物的特性和印刷条件极大地影响了复合材料的稳定性.
- 这些发现指导了对可靠的月球基础设施的材料和工艺的选择.
相关概念视频
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To understand this phenomenon, consider the elementary reaction:
To understand this phenomenon, consider the elementary reaction:
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