Abstract In this study, the microporous foamed hybrid geopolymer with light weight and enhanced intrinsic hydrophobicity is successfully fabricated through the microbubble and microfiber modification. The foam contains microbubbles majorly distributed in 20-260 μm diameter and achieves a bulk density of 0.39 g/cm3. Abundant surface roughness created by microbubbles leads to the enhanced contact angle (140.9°, with 25.6% increase) compared to the unmodified hybrid geopolymer. Meanwhile, due to the intrinsic porous and hydrophobic nature, the surface after mechanical damage also shows good resistance to water wetting.

中文翻译：

---

微泡增强泡沫混合地质聚合物的疏水性

摘要 本研究通过微泡和超细纤维改性成功制备出质量轻、内在疏水性增强的微孔发泡杂化地质聚合物。该泡沫包含主要分布在 20-260 μm 直径的微泡，堆积密度为 0.39 g/cm3。与未改性的混合地质聚合物相比，微气泡产生的大量表面粗糙度导致接触角增强（140.9°，增加 25.6%）。同时，由于其固有的多孔性和疏水性，机械损伤后的表面也表现出良好的抗水润湿性。