▎ 摘　　要

NOVELTY - Degradable copolyester composition comprises 100 pts. wt. degradable copolyester, 0.01-10 pts. wt. antistatic agent, preferably, 0.05-5 pts. wt. antistatic agent, more preferably, 0.1-1 pts. wt. antistatic agent. The antistatic agent is an edge-modified graphene. The edge-modified graphene has average sheet diameter is 2-30 µm, preferably, 5-15 µm. The average aspect ratio is 600-10000:1, preferably 1200-4500:1, more preferably 1500-3800:1. The electrical conductivity is 200-800 seconds/meter, preferably, 300-600 seconds/meter. The oxygen content in terms of oxygen element in the edge-modified graphene, is 3-30 at%, preferably, 5-18 at%. The hydrogen content calculated as hydrogen element is 1-10 at%, preferably, 3-8 at%. USE - Degradable copolyester composition used as antistatic biodegradable material for preparing electronic packaging bag film (all claimed). ADVANTAGE - The degradable copolyester composition has good mechanical property, easy opening, good antistatic properties, and biodegradable characteristics. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: 1. an antistatic biodegradable film material, which comprises: a degradable copolyester composition, and 1-50 pts. wt. film auxiliary agent, preferably, 2-22 pts. wt. film auxiliary agent, with the weight of the degradable copolyester composition being 100 pts wt., where film auxiliary agent includes slip agent, nucleating agent, antioxidant and degradable resin; and 2. a method for preparing antistatic biodegradable film material, which involves: extruding and granulating after mixing the degradable copolyester, antistatic agent, film auxiliary agent and optional compatibilizer, to obtain the antistatic biodegradable film material, or mixing degradable copolyester, granulating with an optional antioxidant to obtain a base resin, mixing with an antistatic agent, mixing slip agent, nucleating agent, compatibilizer and degradable resin, extruding, and granulating to prepare the antistatic biodegradable film material; and 3. an antistatic biodegradable film, which is: prepared from antistatic biodegradable film material.