Silicon-containing conductive polyurethane-imide elastomers: unique microstructure, heat resistance, mechanical property, and conductivity

The article presents a detailed study on the synthesis and characterization of silicon-containing conductive polyurethane-imide elastomers (CPUIs), focusing on their unique microstructure, exceptional heat resistance, and superior mechanical properties. The research introduces a novel method of incorporating imide and siloxane groups into the molecular structure of conductive polyurethanes, significantly enhancing their thermal stability and mechanical strength. The study employs various analytical techniques, including FTIR, NMR, TG, and DMA, to elucidate the effects of these modifications on the material's properties. The results demonstrate that the introduction of imide groups promotes the stacking and crystallinity of hard segments, while siloxane groups improve the degree of microphase separation. This dual modification strategy leads to the development of CPUIs with outstanding heat resistance, with initial thermal decomposition temperatures exceeding 300°C, and impressive mechanical properties, with ultimate tensile strengths reaching up to 48.32 MPa. Furthermore, the article explores the conductivity and electrochemical properties of these elastomers, showcasing their potential applications in advanced electronic devices and sensors. The findings highlight the significance of this research in the field of conductive polymer materials, offering valuable insights for the development of high-performance materials for electronic communication industries.