▎ 摘　　要

NOVELTY - High-strength high temperature resistant MDI-based slow resilience polyurethane sponge comprises 40-60 pts. wt. low-resilience polyether polyol, 40-60 pts. wt. base polyether polyol, 0-20 pts. wt. polymer polyor, 1-5 pts. wt. high temperature reinforcing agent, 1.2-2.4 pts. wt. amine catalyst, 0.4-1.2 pts. wt. tin catalyst, 0.8-1.2 pts. wt. surface active agent, 1-2 pts.wt. foaming agent, 1-5 pts. wt. flame retardant and 30-65 pts. wt. methylene diphenyl diisocyanate. USE - High-strength high temperature resistant MDI-based slow resilience polyurethane sponge. ADVANTAGE - The high-strength high temperature resistant MDI-based slow resilience polyurethane sponge , greatly enhances the physical performance stability under high temperature, the flame retardance can reach the self-extinguishing of fire. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing high-strength high temperature resistant MDI-based slow resilience polyurethane sponge, which involves mixing slow-resilience polyether polyol, base polyether polyol, polymer polyol, adding high temperature enhancer according to the formulation, amine catalyst, tin catalyst, surfactant; foaming agent, stirring for 30-60 seconds under the stirrer with the rotating speed of 1000-1500 r/min, marked as A component, adding the flame retardant filler, diphenyl methane diisocyanate into another container according to the proportion, stirring for 10-30 seconds under the stirrer with the rotating speed of 500-1000r/min, pouring the component B into a container filled with component A, stirring for 6-8 seconds under the stirrer with the rotating speed of 2500-3000 r/min; the system is white; pouring the system into the mould; controlling the temperature of the mould at 25 plus minus 0.5degrees Celsius; after 24-72 hours, cutting to obtain the product.