The present invention relates to the technical field of modified plastics, in particular to a degradable plastic for cartridge cases and a preparation method thereof. The degradable plastic for cartridge cases comprises the following components by weight: 80–96 parts of polyglycolic acid and 4–20 parts of a plasticizer. The preparation method comprises the following steps: Step 1: weighing polyglycolic acid and the plasticizer according to the above ratio; Step 2: mixing the weighed polyglycolic acid and plasticizer, then extruding and pelletizing by a twin-screw extruder, and drying to obtain pellets, namely the degradable plastic for cartridge cases. It solves the problems of easy cracking, excessive melt viscosity and non-recyclability of polyglycolic acid materials, enabling better application of polyglycolic acid materials in the preparation of plastic cartridge cases.
Country Code: CN
Application Number: CN202410042864.3
