Preparation method of hydrolysis-resistant thermoplastic polyurethane elastomer material

The invention relates to the technical field of polymer damping materials, in particular to a preparation method of a hydrolysis-resistant thermoplastic polyurethane elastomer material. The preparation method of the hydrolysis-resistant thermoplastic polyurethane elastomer material comprises the following steps: carrying out a copolymerization reaction; chain extension reaction; and heating and curing. According to the method, a prepolymer with relatively high molecular weight is generated through a prepolymer method, chain extension is carried out by using micromolecular dihydric alcohol, and heating curing treatment is carried out, so that the polyurethane elastomer with good water resistance and mechanical property can be prepared without adding a hydrolysis-resistant auxiliary agent; the prepared polyurethane elastomer belongs to a thermoplastic material and can be repeatedly processed, so that the utilization rate of resources is increased, waste is reduced, and sustainable development requirements are m