Whole water foaming spray coating soft flame retardant polyurethane heat insulation material and preparation method thereof

The invention relates to the field of a polyurethane energy-saving heat-insulation novel material, and provides a whole water foaming spray coating soft flame retardant polyurethane heat insulation material. The heat insulation material is prepared from combined polyether and isocyanate, wherein the combined polyether is prepared from polyether polyol, surfactants, catalysts, foaming agents and aflame retardant; the isocyanate is prepared from polymerized diphenylmethane diisocyanate MDI, isophorone diisocyanate IPDI or polymerized diphenylmethane diisocyanate MDI and hexamethylene diisocyanate HDI; the flame retardant is concretely a phosphorus and nitrogen flame retardant system obtained by matching oligophosphate dibasic alcohol etherified amino resin polyols and phosphate. The invention also provides a preparation method of the whole water foaming spray coating soft flame retardant polyurethane heat insulation material. The whole water foaming spray coating soft flame retardant polyurethane heat insulatio