High-performance thermal insulation materials play a critical role in thermal management and saving energy. The current conventional thermal insulation materials cannot meet the increasing requirements of thermal management for thermal insulation performance. The advanced insulating materials represented by silica aerogels have excellent thermal insulation properties, but the brittleness limits their applications. Herein, we reported a flexible and environmentally friendly method to prepare ultra-elastic and super-insulating bio-based nanocellular material by means of microcellular foaming of in-situ fibrillated PA reinforced PEBA nanocomposites with the mixture of CO₂ and N₂ as blowing agents. Thanks to the significantly reduced air thermal conductivity within nanoscale cells, the nanoporous foam exhibits outstanding thermally insulating properties with a thermal conductivity of as low as 25.6 mW/m K. More importantly, the nanoporous foam also shows excellent compression and stretch resilience and outstanding flexibility. The excellent thermal insulation, ultra-elasticity, biomass and biodegradability, environmental friendliness, and manufacturing scalability make the material attractive for high-performance thermal management applications.

高性能保温材料在热管理和节能方面发挥着至关重要的作用。现有的常规保温材料已不能满足热管理对保温性能日益提高的要求。以二氧化硅气凝胶为代表的先进隔热材料具有优异的隔热性能，但脆性限制了其应用。在此，我们报道了一种灵活且环保的方法，通过原位原纤化 PA 增强 PEBA 纳米复合材料与 CO ₂和 N _{2的混合物进行微孔发泡，制备超弹性和超绝缘的生物基纳米孔材料。}作为发泡剂。由于纳米级孔内的空气热导率显着降低，纳米多孔泡沫具有出色的隔热性能，热导率低至 25.6 mW/m·K。更重要的是，纳米多孔泡沫还表现出出色的压缩和拉伸回弹性以及出色的柔韧性. 优异的隔热性、超弹性、生物质和生物降解性、环境友好性和制造可扩展性使该材料对高性能热管理应用具有吸引力。