The present invention discloses a low-density nylon composite material comprising the following components by weight: nylon 60-80 parts; hollow microspheres 10-30 parts; toughening agent 0-20 parts; additives 0-1 part. The invention also discloses a method for preparing the low-density nylon composite material, comprising the following steps: S1. Pre-mix nylon particles, toughening agent, and additives uniformly; S2. Add the material from S1 to the main hopper of a twin-screw extruder. Introduce hollow microspheres via a side feed port. Use vacuum suction to draw the material into the extrusion barrel, melt and extrude it, then cool it in a water bath before pelletizing it with a cutter; S3. Injection molding. Through the above method, the invention can incorporate hollow microspheres as needed to reduce material density and meet customer requirements.
Country Code: CN
Application Number: CN202011298836.6
