The invention relates to the technical field of polymer materials, and specifically discloses a composition for preparing polyglycolic acid material, a polyglycolic acid material as well as a preparation method and application thereof. The composition includes polyglycolic acid, an initiator and a crosslinking agent. Based on 100 parts by weight of polyglycolic acid, the dosage of the initiator is 0.1-1 parts by weight, and the dosage of the crosslinking agent is 0.9-3 parts by weight. At 230℃ and a frequency of 0.1 rad/s, the complex viscosity of the polyglycolic acid ranges from 50 to 300 Pa·s. At 240℃ under a load of 2.16 kg, the melt mass flow rate of the polyglycolic acid is 20-50 g/10min. By adjusting the proportion of each component and adopting polyglycolic acid with specific parameter indicators, the present invention realizes effective modification of polyglycolic acid, thereby significantly improving the complex viscosity, melt mass flow rate and thermal stability of the polyglycolic acid material.

Area Code: CN

Application Number: CN202110512185.4