异构型绝热剂采用骨灵感的MXene气凝.
Junsong Fu1,2,3, Wangwei Lian1,2,3, Yankang Deng1,2,3
1State Key Laboratory of Bioinspired Interfacial Materials Science, School of Nano Science and Technology, Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou 215123, China.
National science review
|October 3, 2025
概括
研究人员开发了一种新的骨灵感的MXene气凝 (CMA),提供卓越的同位热绝缘. 这种先进的材料还为极端环境提供传感,防火和电磁干扰屏蔽.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 航空航天工程 航空航天工程
背景情况:
- 气凝提供了优良的绝热,但在极端温度下有异构性能和不良的机械稳定性.
- 现有的气凝具有高的轴导热率和结构崩,限制了它们在苛刻环境中的应用.
研究的目的:
- 开发一种轻量级的同位热绝热气凝,具有增强的机械稳定性和多功能性质.
- 为了模仿剪骨的墙壁七角微观结构,以提高气凝的性能.
主要方法:
- 使用Ti3C2Tx MXene纳米片,蒙莫里隆石纳米片,纤维素纳米纤维和聚乙烯醇进行冷造,制造骨灵感的MXene气凝 (CMA).
- 热导率,机械稳定性,传感响应,耐火性和电磁干扰 (EMI) 屏蔽的表征.
主要成果:
- 该CMA表现出超低的导热率 (17.1 mW m-1 K-1 辐射,19.7 mW m-1 K-1 轴向) 和同位素性能.
- 该材料表现出快速传感,强大的耐火性和出色的EMI屏蔽 (~61dB).
- 结构完整性和EMI屏蔽在广泛的温度范围 (-196°C至1300°C) 中保持稳定.
结论:
- 以骨为灵感的MXene气凝 (CMA) 为先进的隔热和多功能应用提供了一个有前途的替代方案.
- 它的同位素性质,机械强度和在极端条件下的稳定性解决了传统气凝的主要局限性.
相关概念视频
Thermal Insulation in Masonry Walls
477
In hot, dry climates, the thermal mass of masonry walls can be beneficial, absorbing heat during the day and releasing it at night, thereby stabilizing indoor temperatures. However, in most other climates, additional insulation is necessary to enhance thermal resistance.
External insulation can be applied using an Exterior Insulation and Finish System (EIFS), which involves affixing panels of plastic foam to the wall and covering them with a polymeric stucco reinforced with glass fiber mesh....
External insulation can be applied using an Exterior Insulation and Finish System (EIFS), which involves affixing panels of plastic foam to the wall and covering them with a polymeric stucco reinforced with glass fiber mesh....
477
Masonry in Cold and Hot Weather Conditions
330
In cold weather, masonry construction requires specific precautions to ensure mortar does not freeze before curing, as this can significantly weaken its strength and watertightness. Mortar temperature should be maintained between 60°F and 80°F to support proper hydration and curing. Below 40°F, mortar water must be heated, but should not exceed 120°F as high temperatures can reduce mortar's compressive and bond strength.
Other key practices include keeping masonry units...
Other key practices include keeping masonry units...
330
Thermosensation
33.7K
Peripheral thermosensation is the perception of external temperature. A change in temperature (on the surface of the skin and other tissues) is detected by a family of temperature-sensitive ion channels called Transient Receptor Potential, or TRP, receptors. These receptors are located on free nerve endings. Those detecting cold temperatures are closer to the surface of the skin than the nerve endings detecting warmth. These thermoTRP channels, while temperature selective, have relatively...
33.7K


