PREPARATION PROCESS OF NEW-ENERGY BIOMASS MATERIAL FOR 3D PRINTING

The present invention provides a preparation process of a new-energy biomass material for 3D printing， which includes: mixing a cellulose raw material with a thermoplastic plastic powder in equal proportions to obtain a cellulose plastic powder， adding polyethylene glycol into the cellulose plastic powder for swelling for 1 hour at 120°C; then dispersing in a homogenizer for 10 minutes to obtain a polyethylene glycol dispersion liquid; washing away the polyethylene glycol in the polyethylene glycol dispersion liquid by using dichloromethane to obtain a dichloromethane suspension dispersion liquid; adding a coupling agent into the dichloromethane suspension dispersion liquid and magnetically stirring to obtain a surface-modified cellulose microfiber; adding the modified cellulose microfiber， a plasticizer and a flexibilizer into a PLA dichloromethane solution; stirring， recovering a dichloromethane solvent through a condensing unit， and removing the residual dichloromethane to obtain a cellulose microfiber/PLA composite material; and extruding the cellulose microfiber/PLA composite material with a linear extruder to obtain a cellulose-based 3D printing wire， thus realizing an effect of using cellulose and/or polylactic acid to prepare the 3D printing wire. 1/1 Si According to a functional requirement of a 3D printing wire， mixing a cellulose raw material with a thermoplastic plastic powder in equal proportions to obtain a cellulose plastic powder， then adding polyethylene glycol (PEG) into the cellulose plastic powder for swelling for 1 hour at 120°C S2 Mechanically extruding the swollen cellulose plastic powder， followed by dispersing in a homogenizer for 10 minutes to obtain a polyethylene glycol dispersion liquid containing a cellulose microfiber and a thermoplastic S3 Washing away the polyethylene glycol in the polyethylene glycol dispersion liquid containing the cellulose microfiber and the thermoplastic by using dichloromethane to obtain a dichloromethane suspension dispersion liquid containing the cellulose microfiber and the thermoplastic Adding a certain amount of a coupling agent into the dichloromethane suspension dispersion liquid containing the cellulose microfiber and the thermoplastic， and magnetically stirring and reacting for 30 minutes to obtain a surface-modified cellulose microfiber S5 Jointly adding the modified cellulose microfiber， a plasticizer and a flexibilizer into a PLA dichloromethane solution， wherein the PLA dichloromethane solution is a PLA dichloromethane solution with a certain concentration obtained by dissolving polylactic acid (PLA) in dichloromethane until the solution is completely transparent S6 Fully stirring and evenly mixing under a normal temperature， mechanically stirring at 60C， recovering a large amount of a dichloromethane solvent through a condensing unit， removing the residual small amount of dichloromethane through air drying to obtain a cellulose microfiber/PLA composite material S7 Extruding the cellulose microfiber/PLA composite material with a linear extruder to obtain a cellulose-based 3D printing wire， adding a part of the cellulose-based 3D printing wire into a grain cutting device， and cutting， rounding， drying and curing toobtain acellulose-based 3D printing particle End FIG. 1