使用MWCNTs@SiO2核心外填充剂增强P(VDF-TrFE-CTFE) /PMMA复合材料的介电性质
Yangjie Zhong1, Chengming Tang1, Jidong Sun1
1Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, China.
Langmuir : the ACS journal of surfaces and colloids
|August 26, 2025
概括
研究人员开发了新的MWCNTs@SiO2核心外填充剂,以提高电湿对电湿 (EWOD) 设备的介电性质. 这些复合材料显示显著增强的介电常数和接触角度调制,以提高EWOD性能.
科学领域:
- 材料科学
- 聚合物科学
- 纳米技术
背景情况:
- 介电材料对于电湿对介电装置 (EWOD) 的性能至关重要.
- 提高聚合物的介电性质是推进EWOD技术的关键.
研究的目的:
- 制造和描述MWCNTs@SiO2核心外结构填充剂.
- 将这些填充物纳入用于EWOD应用的聚合物矩阵.
- 评估核心外填充剂对介电特性和EWOD性能的影响.
主要方法:
- 通过对MWCNT的SiO2涂层制造MWCNT@SiO2核心外填充剂.
- 将填充剂纳入一个P ((VDF-TrFE-CTFE) /PMMA聚合物矩阵.
- 介电性质的表征 (介电常数,介电损失,断裂强度) 和EWOD性能 (接触角度调制).
主要成果:
- 使用4重%MWCNTs@SiO2填充剂的复合膜在100Hz时达到25.4的介电常数 (108.2%增强),且介电损耗低 (0.05).
- SiO2外改善了电场的分布和断裂强度.
- 在50V直流下实现了38. 3°的接触角度调制范围 (151. 97%的增强).
结论:
- MWCNTs@SiO2核心外填充剂显著提高介电性质和EWOD性能.
- 这种核心外结构为开发EWOD设备的先进介电材料提供了有前途的策略.
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