With the growing interest in foamed geopolymer manufacture, there is an increasing demand for tailoring these composites’ pore structure. The binary system of two surfactants offers a possibility for enhancing foam formation efficiency and stability in geopolymer paste, however, their effects are not well understood. The influence of binary system blends on pore formation, size, and distribution in fly ash-based geopolymer matrix is investigated and their synergistic effects are evaluated. The results show that combining a nonionic surfactant with anionic Sodium Dodecyl Sulfate (SDS) increases open porosity, whereas cationic Cetyltrimethylammonium Bromide (CTAB) promotes the development of closed pores, improving thermal insulating, hygrothermal and mechanical performance. Moreover, this paper proposes a mechanism to describe the creation of pores in the presence of mixed micelles, as well as the benefit of employing mixed surfactant systems in customizing porous composites.

随着人们对泡沫地质聚合物制造的兴趣日益浓厚，对定制这些复合材料的孔结构的需求也越来越大。两种表面活性剂的二元体系为提高地质聚合物浆料中的泡沫形成效率和稳定性提供了可能，但是，它们的效果尚不清楚。研究了二元体系共混物对粉煤灰基地质聚合物基质中孔隙形成、尺寸和分布的影响，并评估了它们的协同效应。结果表明，将非离子表面活性剂与阴离子十二烷基硫酸钠 (SDS) 结合可增加开孔率，而阳离子十六烷基三甲基溴化铵 (CTAB) 可促进闭孔的形成，从而提高隔热、湿热和机械性能。而且，