用功能性风湿学修饰器评估水凝的珠子传播的风湿学指标,用于直接墨水写作:对酸-石墨烯-二氧化的案例研究.
Daniel Alves Heinze1,2,3, Supreet Thale1,3, Yimin Yao1,2
1Macromolecules Innovation Institute, Virginia Tech, 240 W Campus Dr, Blacksburg, Virginia 24061, United States.
概括
这项研究探讨了用石墨烯和二氧化进行3D打印的基托桑水凝. 在直接墨水写作中,以tan delta表示的最佳形学确保了良好的形状保留和挤出保真性.
科学领域:
- 材料科学 材料科学 材料科学
- 增材制造 增材制造 增材制造
- 类风病学 类风病学 类风病学
背景情况:
- 酸盐水凝对添加剂制造有希望.
- 像石墨烯和二氧化这样的功能填充剂可以改变水凝的特性.
- 控制质是成功直接墨水写作 (DIW) 的关键.
研究的目的:
- 为了研究用石墨烯和二氧化填充剂的奇托桑水凝的质性行为.
- 在DIW中建立一个设计空间,用于形修饰和珠子传播.
- 了解配方组件对挤出性和形状保持性的影响.
主要方法:
- 用石墨烯和二氧化 (TiO2) 填充剂进行酸盐 (CS) 水凝配方的风湿学测试.
- 直接墨水写作 (DIW) 增材制造 (AM) 实验.
- 打印珠子形状和挤出精度的分析.
主要成果:
- 丹三角形被确定为保持形状的关键指标;丹三角形> 1导致油墨散布.
- 具有固体类行为 (三角值≤1) 和低至中等TiO2度的配方表现出良好的挤出和形状保留.
- 高度的TiO2 (25重量%) 导致不一致的挤出和降低保真度.
- 酸盐含量影响结构恢复比填充剂添加更有利.
结论:
- 使用功能性颗粒的风湿学修改对于水凝复合材料的DIW至关重要.
- 优化填充剂度和了解像tan delta这样的质参数可以改善挤出和形状保真.
- 这项研究提供了通过DIW有效生产聚合物基水凝油墨的见解.
更多相关视频
相关概念视频
Preparation of Samples for Electron Microscopy
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...
Precipitation Titration: Endpoint Detection Methods
In argentometric precipitation titrations, endpoints can be detected visually by the Mohr, Volhard, and Fajans methods. In the Mohr method, adding a soluble chromate indicator gives an initial yellow color to the analyte solution. As the titrant is added, the first excess of silver ions forms a red silver chromate precipitate, marking the endpoint. The solution pH should be maintained at about 8 by adding solid CaCO3.
In the Volhard method, a standard excess of AgNO3 is first added to the...
In the Volhard method, a standard excess of AgNO3 is first added to the...
Precipitation Gravimetry
Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
Precipitation and Co-precipitation
Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
Testing Water Quality
When the quality of water for concrete preparation is uncertain, its impact on the setting time of cement and compressive strength of mortar is assessed by comparison with de-ionized or distilled water benchmarks. American Society for Testing and Materials (ASTM) C1602 requires the setting times to be within 90 minutes of the control, British Standard (BS) 3146:1980 allows a 30-minute variance in the initial setting, while British Standards European Norm (BS EN) 1008 specifies initial setting...


