对聚合物混合物的复杂允许度的透效应
Hsien-Wen Chao1, Yun-Yu Lai2, Tsun-Hsu Chang1
1Department of Physics, National Tsing Hua University, 101, Section 2, Kuang Fu Road, Hsinchu 300044, Taiwan.
Polymers
|September 28, 2023
概括
本研究使用现场增强方法 (FEM) 测量聚合物混合物的复杂允许性. 观察到一个透效应,显著增加介电常数和损失触点,具有更高的溶液度.
科学领域:
- 材料科学 材料科学 材料科学
- 介电光谱学 介电光谱学
- 聚合物物理 聚合物物理
背景情况:
- 了解聚合物混合物的介电性质对于它们在各种电子和电气设备中的应用至关重要.
- 场增强法 (FEM) 提供了一种敏感的技术,用于表征材料的复杂导电性.
- 聚合物混合物,特别是涉及溶剂-溶解物混合物的聚合物,可以表现出由度和相位转换影响的复杂介电行为.
研究的目的:
- 测量和分析复杂的聚合物混合物的电容性,特别是DC-840,MCL-805和MCL-Siloxane,使用现场增强方法 (FEM).
- 研究溶液度对聚合物混合物的介电常数和损失触点的影响.
- 用有效介质理论和介电模型阐明观察到的透现象及其与混合物粘度的相关性.
主要方法:
- 使用现场增强方法 (FEM),将聚合物混合物样品放置在FEM腔内的特龙支架中.
- 通过测量与样品相结合的FEM腔的共振频率和质量因子来确定复杂的电容性.
- 采用有效的介质理论,高频结构模拟器 (HFSS),通用介电常数和德拜模型来分析实验数据.
主要成果:
- 成功提取了DC-840,MCL-805和MCL-西洛混合物的复杂的电容性.
- 在DC-840/烯混合物中,在临界溶解物体体积分数以上观察到压电常数和损失接触值的显著增加,这表明透效应.
- 发现透现象与聚合物混合物的粘度有很强的相关性.
结论:
- 场增强法 (FEM) 对于描述聚合物混合物的介电性质是有效的.
- 透显著影响聚合物混合物的介电行为,特别是在较高的溶液度下.
- 通用介电常数和德拜模型为解释观察到的透对介电性质的影响提供了有价值的框架.
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