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通过自组装模板为平衡的机械和热绝缘性能量身定制碳气凝的架构

Lei Yang^1,2, Xianxin Shao³, Lin Lu²

¹College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.

Nanomaterials (Basel, Switzerland)

|December 24, 2025

概括

研究人员开发了先进的碳气凝 (CA),具有增强的机械强度和绝热性能. 分子组装和热解控制为极端条件创建可调节的CA结构.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
化学工程是化学工程的重要组成部分.

背景情况:

碳气凝 (CA) 用于极端的隔热.
在CA中平衡机械强度和隔热是一种重大挑战.
现有的方法在为要求高的应用程序而努力实现最佳性能.

研究的目的:

开发一种用于制造具有可调节机械和热绝缘性能的碳气凝的新策略.
通过分子组装来定制CA的骨架架构.
为了在高温应用中实现机械强度和隔热之间的平衡.

主要方法:

使用聚氨尿素寡合物 (PUU) 和树脂 (PF) 的键诱导自组合制造碳前体气凝.
在1400°C的前体气凝的热解,形成碳气凝.
使用小角度X射线散射 (SAXS) 进行毛孔结构的表征.

主要成果:

开发的方法产生了碳气凝,具有强大的粒子间连接和出色的机械性能.
PUU的存在促进了更密集的包装,石墨化和纳米晶体结构的形成,优化了机械强度 (110 MPa).
达到适度的孔径宽度 (0.4-0.6 nm),平衡强度与低导热率 (0.30 W/(m·K)).

结论:

分子级组装与热解控制相结合,可以精确调节碳气凝结构和特性.
这种方法为创造高性能碳气凝提供了一条途径,用于极端绝热.
该研究为先进的热管理应用设计材料提供了新的见解.

关键词:

碳气凝是一种碳气凝.封闭的毛孔封闭的毛孔机械性能机械性能机械性能纳米晶体的纳米晶体.自动组装自动组装

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