通过溶剂引导结构设计在超多孔的聚胺气凝上设计稳定的图形网络
Tingting Wu1,2, Mengmeng Li1, Mingxiang Gao3
1Laboratory for Building Energy Materials and Components, Empa, Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, Dübendorf, 8600, Switzerland.
Small (Weinheim an der Bergstrasse, Germany)
|December 12, 2025
概括
经过化学工程的聚胺气凝克服了激光诱导的石墨化挑战. 这项创新为先进的电子应用创造了强大,导电的石墨烯-碳网络,保留了关键的材料特性.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 聚合物化学 聚合物化学
背景情况:
- 聚胺 (PI) 气凝为电子产品提供了卓越的热稳定性和低介电损耗.
- 由于热降解和框架崩,多孔PI的受控激光诱导石墨化 (LIG) 很困难.
研究的目的:
- 为控制的LIG开发一种化学工程PI气凝基板.
- 为了创建一个强大的,分层多孔的PI气凝,在高强度LIG期间保持完整性.
主要方法:
- 分子设计策略,在凝过程中量身定制溶剂-聚合物相互作用.
- 工程PI气凝的高强度激光诱导石墨化 (LIG).
- 电气,介电,热和结构性质的表征.
主要成果:
- 实现了嵌入PI矩阵中的统一石墨烯-碳导电相.
- 获得了低板电阻 (6.5 Ωsq-1) 与优良的介电性质 (ɛr = 1-2,tan δ <0.2).
- 经过处理后证明保留了保温 (30-35mW m-1 K-1) 并适用于灵活的压力传感器,热管理和超轻天线.
结论:
- 化学工程PI气凝可以控制LIG,而不会损害结构完整性或多孔性.
- 由此产生的材料表现出导电性,低介电损耗和隔热的独特组合.
- 这种方法有利于开发多功能,轻量级的电子设备.
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