A preparation method of a shape-memory 4D printing wire suitable for fused deposition printing, belonging to the technical field of 4D printing, specifically comprises the following steps: Step 1, under a protective atmosphere and a reaction temperature of 70°C, add deionized water, PB latex particles and KOH into a reaction kettle, and stir uniformly in an alkaline environment; Step 2, add an azeotropic mixture of styrene, acrylonitrile and an initiator into the reaction kettle in a continuous feeding manner for reaction to obtain a PB-g-SAN modifier; Step 3, mix the PB-g-SAN modifier and SAN resin uniformly, then add into a twin-screw extruder for mixing and extrusion to obtain the shape-memory 4D printing wire suitable for fused deposition printing. The present invention endows ABS with a uniform distribution structure of fixed phase-reversible phase by improving the grafting ratio of the PB-g-SAN modifier, making ABS have shape-memory performance and broadening the application range of the printing wire.
Country Code: CN
Application Number: CN202410049134.6
