通过热稳定的乙烯基聚合物 (基聚合物) 与基实现低消耗因子和低介电常数
Manohar Reddy Busireddy1,2, Ling-Huan Meng1,2, Jin-Wei Lin1,2
1Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 300093, Taiwan.
ACS applied materials & interfaces
|March 14, 2025
概括
带有三甲基的新型聚乙胺基 (PEI) 具有优异的热稳定性和低介电性质. 调整单体比率可以显著降低介电损耗,并为高频应用提供常量.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 电气工程 电气工程
背景情况:
- 聚胺 (PI) 和它们的衍生物,如聚胺 (PEI),由于其热稳定性和可加工性,在微电子和光电子中至关重要.
- 在高频率 (≥10 GHz) 中,开发具有低介电常量 (Dk) 和散射因子 (Df) 的PI对于先进的移动通信至关重要.
研究的目的:
- 为了合成和描述具有低介电性能的三甲基组的新型PEI薄膜.
- 研究单体比对PEI薄膜的热,机械和介电性能的影响.
主要方法:
- 使用 2,2'-bis(trifluoromethyl) -[1,1'-biphenyl]-4,4'-diamine (TFMB),1,4-phenylene bis(1,3-dioxo-1,3-dihydroisobenzofuran-5-carboxylate) (TAHQ) 和 naphthalene-2,6-diyl bis(1,3-dioxo-1,3-dihydroisobenzofuran-5-carboxylate) (NPDA) 单体的PEI薄膜的合成.
- 调整TAHQ/NPDA摩尔比率以调节膜的特性.
- 在10 GHz时评估热稳定性 (Td5%和Tg),热膨胀系数 (CTE),机械稳定性和介电性质 (Dk和Df).
主要成果:
- 所有合成的PEI薄膜都表现出极好的热稳定性 (Td5%>470°C,Tg=215250°C) 和良好的机械性能.
- 增加NPDA比率导致自由体积增加,平衡极化性和线性,这有利于低介电性质.
- PEI膜显示Dk/Df值下降与NPDA度增加,达到2.90/0.00174的PEI-NPDA-100在10 GHz,特别低的Df值.
结论:
- 含的PEI骨架是实现高频低介电性能的有希望的策略.
- NPDA比率有效地控制了热,机械和介电性质之间的权衡.
- 这些新的PEI材料适用于先进的高频电子和光电子应用.
关键词:
高热稳定性 高热稳定性低压电常数是低压电常数.摩拉自由体积的摩拉自由体积纳夫他烯 纳夫他烯 纳夫他聚-胺 (Poly-------------------------------------------------------------------------------------------------------------------------------------------三甲基组是三甲基组的一个组成部分.超低的消散因子是指超低的消散因子.更多相关视频
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