Environmentally-friendly flexible conductive polyurethane (PU) and preparation method thereof

A preparation method of an environmentally-friendly flexible conductive polyurethane (PU), comprising the following steps:

• 1) Preparation of a first component, comprising:
• heating at least one reagent selected from the group consisting of a polyol, a diselenide diol, and a T-type chain extender to 50° C. to 130° C., adding high-conductivity carbon black and a dispersing agent, ultrasonically stirring, and adding a catalyst and a leveling agent to obtain a hydroxyl-terminated polymer as the first component;
• 2) Preparation of a second component, comprising:
• heating a polyisocyanate or the polyol to 50° C. to 130° C., adding a multi-walled carbon nanotube (MWCNT) and the dispersing agent, ultrasonically stirring, adding remaining materials, and stirring at a predetermined temperature to obtain an isocyanate-terminated prepolymer as the second component;
• and
• 3) Preparation of the environmentally-friendly flexible conductive PU:
• adding the first component and the second component to a reactor according to a specified weight ratio, stirring at a high speed of 1,500 r/min to 2,000 r/min for 4 min to 10 min, and aging at 100° C. to 120° C. for 1 hour to 2 hours to obtain the environmentally-friendly flexible conductive PU.