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在干燥用链状颗粒的合体悬浮液中抑制裂纹
Zhaoxia Niu1, Yiping Zhao2, Qiuting Zhang1
1School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China.
The Journal of chemical physics
|April 24, 2024
概括
将链状颗粒添加到化纳米颗粒悬浮液中,可以防止涂料在干燥过程中产生裂纹. 这种方法增强了抗裂性,并保持了机械性能,提高了合体沉积的耐用性.
科学领域:
- 材料科学 材料科学 材料科学
- 体科学 体科学 体科学
- 纳米技术纳米技术
背景情况:
- 干燥引起的裂纹在合体沉积物和涂层中是一个重大挑战,损害了机械完整性.
- 控制裂形成对于各种材料的功能和寿命至关重要.
- 现有的预防裂纹的方法往往在有效性或对材料性能的影响方面面临限制.
研究的目的:
- 研究一种新的方法,以防止干燥引起的化沉积物的裂变.
- 为了提高合体二氧化涂层的关键裂纹厚度和机械性能.
- 了解使用链状粒子抑制裂纹的潜在机制.
主要方法:
- 将链状颗粒纳入球形纳米颗粒的合悬浮物中.
- 使用显微镜分析干燥颗粒沉积物中的裂纹形成.
- 测量合化涂层中的关键裂纹厚度.
- 纳米沉积试验用于评估沉积物的机械性质 (硬度).
主要成果:
- 随着链状颗粒的添加,观察到干燥引起的裂显著减少.
- koloidal silica 涂层的关键裂纹厚度增加了五倍.
- 干燥沉积物中含有链状颗粒的孔径和孔径增加被确定为减压的机制.
- 与其他方法相比,具有链状颗粒的合沉积物显示硬度的减少较小.
结论:
- 引入链状颗粒是一种有效的策略,可以抑制合体系统中干燥引起的裂纹.
- 这种技术提供了增强的抗裂性能,并保持了涂料中理想的机械性能.
- 这些发现为开发坚固耐用的合体涂层提供了一种有希望的方法.
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