Use of the Pickering Emulsion Method for the Preparation of Nano‐Aluminum Powder/Fluororubber Composite Microspheres

作者：DengZhao Gao, Xin-Yang Huang, Min Yang, Jun Guo, Qian Wang, Tao Wen, Xingquan Zhang, Changping Guo · 发表于：ChemistrySelect · 年份：2024 · DOI：10.1002/slct.202400401 · 被引用次数：6 · 研究领域：Bone Tissue Engineering Materials、Pickering emulsions and particle stabilization、Additive Manufacturing and 3D Printing Technologies

Abstract The combination of fluoropolymer and nano‐thermite has been a research focus in the field of materials in the field of energy and storage in recent years, but it faces the problem of uneven mixing of fluoropolymer and nano‐aluminum powder (nAl). Therefore, it is of great significance to obtain a fluorine/aluminum uniform composite by a solid/solid phase mixing method. In this paper, Pickering emulsions effectively blend difficult‐to‐mix powders of nAl and solid bulk fluoroelastomers on the micro‐ and nanoscale. The emulsion was prepared by Pickering emulsion with an ethyl acetate solution of fluororubber as the oil phase and perfluorocarboxylic acid‐modified nano‐aluminum powder as a surfactant. The effects of oil/water ratio, fluororubber/aluminum ratio, and standing time on the stability of the emulsion were studied. The nano‐aluminum powder/fluororubber composite microspheres were prepared and their morphology, thermal decomposition, and combustion properties were characterized. The results showed that the emulsion prepared with the oil/water ratio of 1:8 and m(fluororubber):m(modified nano‐aluminum powder) of 5:1 had good stability and dispersion. The transmission electron microscopy (TEM) and scanning electron microscopy (SEM) results showed that the complex was observed to be regular spherical and the size was about 10 µm, and the composite microspheres prepared by the Pickering emulsion had good. The TG‐DSC results showed that the decomposition of the composit...