How to improve the preparation efficiency and reduced production costs in synthesizing high-performance polymer-derived carbon aerogel materials with ultra-low density and excellent thermal protection properties is currently a crucial research topic that has been plaguing scientists for decades. In this study, we innovatively propose a “one-pot” preparation strategy to synthetize carbon aerogel, which can simplify the complex processes of conventional fabrication methods, greatly shorten the preparation time of phenolic resin-based organic aerogel, and obtain the corresponding carbon aerogels after carbonization. Here, a series of carbon aerogel samples are obtained by regulating the solvent species, and their physicochemical properties such as morphology, pore structure shrinkage, density, and thermal conductivity of these samples are discussed in detail. CA@isoamylol is screened out exhibiting the lowest bulk density (0.15 g/cm) and thermal conductivity (0.0499 ± 0.0029 W/m·K at 25 °C and 0.1069 ± 0.0090 W/m·K at 1200 °C), which is comparable to the reported values of best-in-class carbon aerogel values, and much lower than the conventional carbon foams. The synthesized CA@isoamylol is promising as a condidate for thermal insulation material. It is expected that the “one-pot” method could alleviate the above-mentioned bottlenecks of the carbon aerogel discipline to produce high-performance carbon aerogel materials with a low-cost and efficient routes.

中文翻译：

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通过快速一锅制备策略合成具有受控形态和孔隙结构的碳气凝胶，以调节其堆积密度和导热率

如何提高制备效率并降低生产成本，合成具有超低密度和优异热防护性能的高性能聚合物衍生碳气凝胶材料，是目前困扰科学家数十年的重要研究课题。本研究创新性地提出了“一锅法”合成碳气凝胶的制备策略，可以简化传统制备方法的复杂工艺，大大缩短酚醛树脂基有机气凝胶的制备时间，并获得相应的碳气凝胶。碳化后。本文通过调节溶剂种类获得了一系列碳气凝胶样品，并详细讨论了这些样品的形貌、孔结构收缩率、密度和导热系数等物理化学性质。筛选出具有最低堆积密度（0.15 g/cm）和导热系数（25 °C 时为 0.0499 ± 0.0029 W/m·K，1200 °C 时为 0.1069 ± 0.0090 W/m·K）的 CA@异戊醇，即与报告的同类最佳碳气凝胶值相当，并且远低于传统碳泡沫。合成的CA@异戊醇有望作为隔热材料。预计“一锅法”可以缓解碳气凝胶学科的上述瓶颈，以低成本、高效的路线生产高性能碳气凝胶材料。