A kind of preparation method of slow-recovery sponge material

The present invention provides a kind of preparation method of slow-recovery sponge material, comprises the following steps：Slow rebound polyether, common polyether are imported in reactor, need to such as add filler or fireproof powder and fire retardant also together with add reactor, stir at a slow speed to uniform；Then pore-creating agent, foaming agent, foam stabiliser and amines catalyst, auxiliary agent YPF are separately added into proportion, and low speed reinjects organic tin catalyst and stirs evenly after stirring evenly；Under high velocity agitation finally, toluene di-isocyanate(TDI) is poured into reactor, 4 ~ 5 s of stirring, then the mixed liquor in reactor is poured into mould rapidly, compound starts milky white therewith, and material starts to rise immediately, acts being sent to summit and be shown in Table after layer deflates after about 2 min, foamable reaction terminates substantially, and low resilience sponge material is obtained.The method especially to the production of some slow-recovery sponge materials of the addition of pore-creating agent and particular/special requirement at high proportion, can significantly reduce the consumption addition of pore-creating agent such that it is able to be effectively reduced the production cost of product.