设计一种填充材料,以减少用于高频应用的环氧基底材料的介电损失
Ilkan Calisir1, Elliot L Bennett1, Xiantao Yang2
1Department of Chemistry, University of Liverpool Grove Street Liverpool L69 7ZD UK jxiao@liverpool.ac.uk.
RSC advances
|January 13, 2025
概括
表面修饰的片显著改善了用于高频应用的环氧基板. 这些工程填充剂减少介电损失,提高高速信号传输的性能,使它们成为先进电子产品的理想选择.
科学领域:
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
- 聚合物科学 聚合物科学
背景情况:
- 基于环氧的介电基板对于高频和高速信号传输至关重要.
- 对具有低介电损失的材料的需求越来越大,以满足这些应用要求.
研究的目的:
- 开发一种表面工程填充材料,以增强环氧基板的介电性质.
- 研究有机和无机涂料对片的影响,以提高基板性能.
主要方法:
- 片被表面修饰使用球磨用酸 (有机) 和氧化 (无机) 涂层.
- 修改后的薄片被纳入了环氧基质和玻璃织物增强的环氧基质.
- 介电电容率 (εr) 和介电损耗 (tan δ) 在1至10GHz频率范围内进行测量.
主要成果:
- 带有修改片的环氧矩阵显示电介导电容率增加了近5倍 (4.3到21.2),电介导损失减少了数量级 (0.037到0.005).
- 用玻璃织物增强的基板显示出最小的导电率变化 (4.5-5.4) 和显著的介电损失减少 (0.04到0.01).
- 由于双层涂层,增强的填充剂分散和抑制的电子传输有助于改善介电性质.
结论:
- 表面改性片是低损耗,高频环氧基底的有前途的填充材料.
- 开发的方法为提高印刷电路板材料的介电性能提供了一种可行的方法.
- 这些发现支持下一代高速电子设备的材料进步.
相关概念视频
01:18Capacitor With A Dielectric
Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
01:26Susceptibility, Permittivity and Dielectric Constant
When placed in an external electric field, a dielectric material gets polarized. The charge density in the dielectric material is given by the sum of the bound and free charge densities, while the total charge density can also be written in terms of the total electric field. The bound charge density can be measured in terms of polarization, leading to the relationship between electric displacement and polarization.