使用扫描电子显微镜直接对快速扫描热量计芯片进行PEEK 450G的形态分析
Cleiton André Comelli1, Nan Yi2, HenkJan van der Pol3
1Faculty of Environment, Science and Economy, University of Exeter, Harrison Building, Streatham Campus, North Park Road, Exeter, EX4 4QF, UK. c.a.comelli@exeter.ac.uk.
Scientific reports
|August 8, 2024
概括
快速扫描热度计和扫描电子显微镜揭示了热谱如何影响聚乙 (PEEK) 微观结构. 在增材制造过程中,较高的温度会促进更厚的PEEK板块的形成.
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
背景情况:
- 聚乙基 (PEEK) 是一种高性能热塑性聚合物.
- 了解PEEK形态对于优化增材制造工艺至关重要.
研究的目的:
- 在模拟增材制造的热条件下研究PEEK的微观结构变化.
- 为了将热谱与PEEK微结构开发相关联.
主要方法:
- 使用快速扫描热量计 (FSC) 来创建特定的热谱.
- 使用扫描电子显微镜 (SEM) 来直接观察FSC芯片中的PEEK微观结构.
- 应用金涂层用于无蚀刻的SEM分析.
主要成果:
- 成功地观察并量化了与热史相关的PEEK微结构.
- 证明升高的温度峰值会增加片的厚度和发育,这是由于链的流动性增加.
- 确定了基质结构重新融化后的晶体胚胎的形成.
结论:
- 该研究成功地将基板温度和热峰与PEEK中的特定微观结构结果联系起来.
- 快速扫描热度计与SEM相结合,提供了一种高精度的方法,用于在与过程相关的条件下评估PEEK形态.
- 在增材制造中优化热形状可以控制PEEK片结构和特性.
相关概念视频
01:07Scanning Electron Microscopy
4.2K
A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
Fundamental Principles
Accelerated...
Fundamental Principles
Accelerated...
4.2K
01:20Preparation of Samples for Electron Microscopy
5.4K
To be visualized by an electron microscope, either transmission or scanning, biological samples need to be fixed (stabilized) so the electron beam does not destroy them and dried thoroughly (desiccated/dehydrated) so the vacuum does not affect them. Fixation needs to be done as quickly as possible because the sample properties will start changing as soon as it is removed from its natural environment. For example, in a tissue sample, the oxygen levels begin decreasing, causing an altered...
5.4K