散装金属有机框架玻璃的机械性能和加工技术
Shichun Li1,2, René Limbach3, Louis Longley1
1Department of Materials Science and Metallurgy , University of Cambridge , Charles Babbage Road , Cambridge CB3 0FS , U.K.
Journal of the American Chemical Society
|December 25, 2018
概括
这项研究引入了金属有机框架 (MOF) 玻璃,这是一个新的玻璃类别. 研究人员测量了硬度和抗等机械性能,为MOF玻璃应用铺平了道路.
科学领域:
- 材料科学
- 玻璃科学
- 纳米技术
背景情况:
- 金属-有机框架 (MOF) 玻璃是一种新型材料,由于其金属-联体协调结合,与传统玻璃不同.
- 了解MOF玻璃的机械性能对于其在保护涂层和显示技术中的潜在应用至关重要.
- 大量MOF玻璃样本的有限加工方法阻碍了对其机械特性的实验研究.
研究的目的:
- 为了研究化化化玻璃框架 (ZIF) 的机械性能,包括模量,硬度和爬行阻力.
- 开发和应用加工技术来制造适合机械测试的大量MOF玻璃样本.
- 首次评估MOF玻璃的抗划痕性能.
主要方法:
- 纳米印记技术被用来测量四种不同的化ZIF玻璃的模和硬度 (agZIF-4,agZIF-62,agZIF-76,和agZIF-76-mbIm).
- 通过应变率跳跃 (SRJ) 试验和恒定负载和持久 (CLH) 缩爬行实验来评估爬行耐力.
- 通过重新化和化,成功地制造出透明的,无泡的散装MOF玻璃样本,用于擦伤测试.
主要成果:
- 这项研究确定了研究的MOF玻璃的模和硬度.
- 发现应变率灵敏度值与玻璃型聚合物和富含Se的GeSe素玻璃相似.
- 一个批量MOF玻璃样本的成功制造使得这类材料首次进行了擦伤试验.
结论:
- 化MOF玻璃具有独特的机械性能,可以通过纳米印和爬行实验量化.
- 开发有效的加工方法,如重新化和化,是使MOF玻璃的全面机械特征成为可能的关键.
- 这项研究为在需要强大的机械性能领域探索MOF玻璃的实际应用奠定了基础.
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