The preparation method comprises the following steps: adding phenyl trapezoidal polysilsesquioxane into fuming
nitric acid, stirring at a low temperature for 0.5 h, then stirring at
room temperature for 5-20 h, precipitating with
ice water,
drying, dissolving in
tetrahydrofuran and
triethylamine, adding a
palladium-carbon catalyst, stirring at the
room temperature for 5-20 h, then adding a catalyst, stirring at the
room temperature for 5-20 h, and finally adding a catalyst to obtain the high-wear-resistance thermosetting
polyurethane modified by the phenyl trapezoidal polysilsesquioxane, thereby obtaining the high-wear-resistance thermosetting
polyurethane modified by the phenyl trapezoidal polysilsesquioxane. Slowly adding
formic acid at 50-80 DEG C to react for 1-5 hours, filtering the suspension, washing and
drying to obtain anilino trapezoidal polysilsesquioxane; the preparation method comprises the following steps: uniformly mixing
polyol, diisocyanate and a first catalyst, heating to 60-110 DEG C, and reacting for 1-3 hours to obtain a
polyurethane prepolymer; and adding anilino trapezoidal polysilsesquioxane into the polyurethane
prepolymer, reacting for 0.5-5 hours at the temperature of 25-60 DEG C, and demolding to obtain the high-wear-resistance thermosetting polyurethane. Compared with traditional polyurethane, the obtained high-wear-resistance thermosetting polyurethane has the advantages of excellent
high wear resistance, excellent mechanical properties and the like, and can be applied to a lining of a
grinding machine.