Polyurethane elastomers with covalent adaptable networks (PU-CANs) based on the dynamic urethane bond have attracted remarkable attention owing to their reprocessability, adaptability, and self-healability. However, it is still a formidable challenge to achieve excellent dynamics at low temperatures since the urethane bond energy is usually high. Herein, a fluorinated phenolic polyurethane (FPPU) elastomer with CANs based on phenol-carbamate bonds was successfully designed and prepared. Subsequently, the effects of fluorine atoms on the mechanical properties, thermal stability, reprocessability, and self-healability, surface free energy, and hydrophobicity of the prepared elastomers were systematically investigated. The FPPU elastomer showed notch-insensitivity, remarkable self-healable efficiency (98%), low dynamic dissociation temperature (60°C), excellent reprocessability, and low surface energy (62 MJ m⁻²) compared with non-fluorinated counterpart phenolic polyurethane elastomer (APPU). Based on the above-mentioned features, FPPU was selected as an elastic substrate to assemble into a triboelectric nanogenerator (TENG) to harvest energy from natural motion. This TENG exhibited an excellent electrical output performance with a peak open-circuit voltage of 103 V, a peak short-circuit current of 4.7 µA and a peak short-circuit charge of 43 nC. In addition, the TENG possessed high self-cleaning and reprocessing efficiency. Furthermore, a stretchable and self-healing composite conductor based on FPPU was fabricated for flexible electronic devices.

基于动态氨基甲酸酯键的具有共价适应性网络的聚氨酯弹性体（PU-CANs）由于其可再加工性、适应性和自修复性而引起了广泛关注。然而，由于氨基甲酸酯键能通常很高，因此在低温下实现出色的动力学仍然是一项艰巨的挑战。在此，成功地设计和制备了一种基于苯酚-氨基甲酸酯键的具有 CAN 的氟化酚醛聚氨酯（FPPU）弹性体。随后，系统地研究了氟原子对制备的弹性体的机械性能、热稳定性、可再加工性和自愈性、表面自由能和疏水性的影响。FPPU 弹性体表现出对缺口不敏感、显着的自愈效率 (98%)、低动态解离温度 (60°C)、^-2 ) 与非氟化对应物酚醛聚氨酯弹性体 (APPU) 相比。基于上述特点，FPPU被选为弹性基板，组装成摩擦纳米发电机（TENG），从自然运动中获取能量。该TENG表现出优异的电气输出性能，峰值开路电压为103 V，峰值短路电流为4.7 µA，峰值短路电荷为43 nC。此外，TENG具有较高的自清洁和后处理效率。此外，基于 FPPU 的可拉伸和自愈复合导体被制造用于柔性电子设备。