Degradable hydrophilic polyurethane sponge composite material as well as preparation method and application thereof

The invention belongs to the technical field of polyurethane and preparation thereof, and particularly relates to a degradable hydrophilic polyurethane sponge composite material as well as a preparation method and application thereof. The degradable hydrophilic polyurethane sponge composite material is prepared from a component A and a component B. The component A comprises a foaming agent, siliceous lime powder, chitosan, emulsifying wax, a pore opening agent and color paste. The component B is prepared from hydrophilic polyether polyol A, hydrophilic polyether polyol B and toluene diisocynate. The hydrophilic polyether polyol A is prepared by taking sodium lactate and trimethylolpropane as composite initiators and KOH as a catalyst through ring opening polymerization of EO. And the hydrophilic polyether polyol B is EO/PO copolymerized polyether. The degradable hydrophilic polyurethane sponge composite material provided by the invention is applied to makeup cotton, and is good in rebound resilience, good in