A rapid fabrication of flexible fluoropolymer with porous structure based on a high internal phase emulsion template

Abstract

Although fluorinated porous materials are considered promising candidates due to their high porosity low density and acid and alkali resistance , they still face several challenges, such as complex preparation methods, heat induced polymerization of fluorinated emulsion takes too long and material brittleness. In this study, we avoided the difficult problem of stability of fluorine‐containing emulsion.we prepare functional hydrophobic hyperelastomers with morphological control, excellent oil absorption and recyclability by thiol‐ene click photopolymerization using a water‐in‐oil (w/o) high internal phase emulsion (HIPE) as template, the oil absorption capacity of the B4‐30%Si did not change after 10 recycles. By combining the advantages of organic fluorine and inorganic silicon, the prepared foam retains hydrophobicity and excellent chemical resistance, and have excellent structural and mechanical properties and can be compressed up to a 90% strain without rupture. Finally, the composite porous material B4‐30%Si has greater thermal stability (up to 280 °C) than commercially available polypropylene separators, due to the introduction of fluorine and silicon, and better flexibility and mechanical strength than glass fiber separators. Therefore, these materials are promising for use in lithium‐sulfur batteries and wearable electronic components after further modification.This article is protected by copyright. All rights reserved.