3D printing polycaprolactone material and preparation method thereof
A polycaprolactone and inorganic filler technology, applied in the field of 3D printing modified polycaprolactone materials, can solve the problems of low strength of polylactic acid matrix and unsatisfactory strength improvement, achieve excellent modification effect, shorten molding time, The effect of excellent thermal conductivity
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Embodiment 1
[0038] 1) 80 parts by weight of PCL (molecular weight: 420,000) obtained by ring-opening polymerization, 5 parts of BPO, 1 part of composite stabilizer, 0.5 part of benzoin degasser and 2 parts of epoxidized soybean oil fatty acid leveling agent are fully dried and manually well mixed;
[0039] 2) Disperse 10 parts of carbon nanotubes and 1.5 parts of oleic acid dispersion aid in chloroform, stir for a long time to facilitate the full effect of the two, then leave to stand and centrifuge, and vacuum dry the solid particles for later use;
[0040] 3) Add the mixture obtained in step 1) and the modified inorganic component obtained in 2) to a twin-screw extruder through a feed port for extrusion and granulation. The temperature of the twin-screw extruder is set as follows: 150°C-155°C, 155°C-160°C, 160°C-165°C, 165°C-170°C, 170°C-175°C, 175°C-180°C, 180°C- 185°C, 185°C-190°C. After the extrudate is air-cooled, use a granulator to granulate, and then dry at 40°C for 3 hours for...
Embodiment 2
[0043] 1) 83 parts by weight of PCL obtained by ring-opening polymerization (molecular weight: 420,000), 5 parts of BPO, 1 part of composite stabilizer, 0.5 parts of benzoin degasser and 2 parts of epoxidized soybean oil fatty acid leveling agent are fully dried and then manually well mixed;
[0044] 2) Disperse 7 parts of carbon nanotubes and 1.5 parts of oleic acid dispersion aid in chloroform, stir for a long time to facilitate the full effect of the two, then leave to stand and centrifuge, and vacuum dry the solid particles for later use;
[0045] 3) Add the mixture obtained in step 1) and the modified inorganic component obtained in 2) to a twin-screw extruder through a feed port for extrusion and granulation. The temperature of the twin-screw extruder is set as follows: 150°C-155°C, 155°C-160°C, 160°C-165°C, 165°C-170°C, 170°C-175°C, 175°C-180°C, 180°C- 185°C, 185°C-190°C. After the extrudate is air-cooled, use a granulator to granulate, and then dry at 40°C for 3 hour...
Embodiment 3
[0048] 1) 88 parts by weight of PCL obtained by ring-opening polymerization (molecular weight: 420,000), 5 parts of BPO, 1 part of composite stabilizer, 0.5 part of benzoin degasser and 2 parts of epoxidized soybean oil fatty acid leveling agent are fully dried and manually well mixed;
[0049] 2) Disperse 2 parts of carbon nanotubes and 1.5 parts of oleic acid dispersion aid in chloroform, stir for a long time to facilitate the full effect of the two, then leave to stand and centrifuge, and vacuum dry the solid particles for later use;
[0050] 3) Add the mixture obtained in step 1) and the modified inorganic component obtained in 2) to a twin-screw extruder through a feed port for extrusion and granulation. The temperature of the twin-screw extruder is set as follows: 150°C-155°C, 155°C-160°C, 160°C-165°C, 165°C-170°C, 170°C-175°C, 175°C-180°C, 180°C- 185°C, 185°C-190°C. After the extrudate is air-cooled, use a granulator to granulate, and then dry at 40°C for 3 hours for ...
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