Patent AU-2020101197-A4 (AU)
Title: Preparation process of new-energy biomass material for 3d printing
Inventor: XU JUNFEI
IPC: B33Y70/00
Filed: 2020-06-30
Granted: 2020-08-06
Abstract: 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