An environmentally-friendly flexible conductive polyurethane (PU) and a preparation method thereof are disclosed. The environmentally-friendly flexible conductive PU is prepared by subjecting a mixture of a component A and a component B in a specified mass ratio to in-situ solvent-free polymerization, where the component A is prepared from a polyol, a T-type chain extender, a diselenide diol, high-conductivity carbon black, a dispersing agent, a catalyst, and a leveling agent, and the component B is prepared from a polyisocyanate, a polyol, a multi-walled carbon nanotube (MWCNT), and a dispersing agent. The PU has a reliable electrically-conductive function, and shows a self-healing function under room temperature or light conditions when damaged, wherein a microphase separation value HBI (0.5 to 3.0) of soft and hard segment molecules can be adjusted to achieve different hand touches and different mechanical properties, and an organic pollutant emission (volatile organic compound (VOC)) is less than 50 mg/kg.

The present invention relates to flame-retarded rigid polyurethane and/or polyurethane/polyisocyanurate foams (hereinafter individually or jointly also termed “rigid PUR/PIR foams”), and also to a process for producing rigid PUR/PIR foams that comprises reacting a reaction mixture comprising A1 an isocyanate-reactive component, A2 blowing agent A3 catalyst, A4 optionally additive, A5 flame retardant, and B an isocyanate component, and that is characterized in that the flame retardant A5 comprises at least two phosphorus-containing compounds, with one of the two compounds having the general formula R.sup.1R.sup.2(O)P—[O—R.sup.5—R.sup.6—O—P(O)R.sup.3].sub.nR.sup.4 (I) or R.sup.1R.sup.2(O)P—[O—R.sup.5—X—R.sup.6—O—P(O)R.sup.3].sub.nR.sup.4 (II), where X=an alkylene group, N—R.sup.7, O, CO, S, SO, SO.sub.2 OR P—R.sup.7, n=an integer from 0 to 4, preferably 1 or 2, R.sup.1, R.sup.2, R.sup.3, R.sup.4=in each case an aryl-O—, aryl- or alkyl groups, R.sup.5, R.sup.6=in each case an arylene group, R.sup.7=an aryl-O—, aryl- or alkyl group, where the at least one compound having the general formula (I) or (II) is used in an oligomer mixture and on average the value (aa) of n is 0.80 to 4.00, preferably 0.90 to 2.00, more preferably 1.25 to 1.75.

An environmentally-friendly flexible conductive polyurethane (PU) and a preparation method thereof are disclosed. The environmentally-friendly flexible conductive PU is prepared by subjecting a mixture of a component A and a component B in a specified mass ratio to in-situ solvent-free polymerization, where the component A is prepared from a polyol, a T-type chain extender, a diselenide diol, high-conductivity carbon black, a dispersing agent, a catalyst, and a leveling agent, and the component B is prepared from a polyisocyanate, a polyol, a multi-walled carbon nanotube (MWCNT), and a dispersing agent. The PU has a reliable electrically-conductive function, and shows a self-healing function under room temperature or light conditions when damaged, wherein a microphase separation value HBI (0.5 to 3.0) of soft and hard segment molecules can be adjusted to achieve different hand touches and different mechanical properties, and an organic pollutant emission (volatile organic compound (VOC)) is less than 50 mg/kg.