High Performance of Thermoplastic Polyurethane-Graphene Oxide Self-Healing Composite Film

Graphene oxide (GO) sheets were dispersed into N, N-dimethylformamide (DMF) solution by ultrasonication and then mixed with thermoplastic polyurethane (TPU) uniformly, further fabricated to GO-TPU film casting process. The thermal properties, infrared photothermal response, self-healing performance of the systematically investigated. experimental results demonstrate that conductivity 4 wt % GO initial concentration 20 TPU is 0.3719 W·m−1·K−1, which 83.8% increase compared pure TPU. has excellent light-to-heat conversion efficiency. efficiency 7 reaches maximum, temperature increased 63% TPU, reaching 165.6 °C. scratches on composite can be completely healed after being irradiated light for 10 min, shows good properties.