Light-weight ceramic aerogels hold promise for superinsulation. However, its mechanical instability and complex manufacturing hampered its technical applications. In this study, we demonstrate lightweight pore-gradient ceramic aerogel-like foam monoliths (PGAFoams) through one-pot and in situ bubble supported pore gradient formation. The mechanically strong PGAFoams exhibit a low thermal conductivity of 0.036 W m-1 K-1 and a compressive strength of 89.85 MPa. The pore gradient and integral ceramic monolith nature provides such hydrophobic PGAFoams with thermal management, robust soundproof, and fire-resistance performance. Highly machinable PGAFoams can be adapted into a variety of shapes and dimensions to accommodate complex geometry applications. The scalable manufacturing of lightweight PGAFoams opens up building insulation with remarkable thermal management, high mechanical strength, low mass density, superior soundproofing, and fire-retardant performances.

中文翻译：

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分层介孔绝缘陶瓷。

轻质陶瓷气凝胶有望实现超绝热。但是，它的机械不稳定性和复杂的制造阻碍了它的技术应用。在这项研究中，我们通过一锅和原位气泡支持的孔隙梯度形成，证明了轻质的孔隙梯度陶瓷气凝胶状泡沫整料（PGAFoams）。机械强度高的PGAF泡沫塑料的导热系数低，为0.036 W m-1 K-1，抗压强度为89.85 MPa。孔隙梯度和整体陶瓷整体性质为此类疏水性PGAFoams提供了热管理，坚固的隔音性和耐火性能。高度可加工的PGAFoams可以适应各种形状和尺寸，以适应复杂的几何应用。