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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

Active Publication Date: 2014-08-13
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method has improved the strength, toughness and heat distortion temperature, the improvement in strength is still not ideal, which may be related to the low strength of the polylactic acid matrix.

Method used

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  • 3D printing polycaprolactone material and preparation method thereof
  • 3D printing polycaprolactone material and preparation method thereof
  • 3D printing polycaprolactone material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention discloses a high-strength biodegradable polycaprolactone 3D printing material which comprises the following components in parts by weight: 70-90 parts of polycaprolactone, 1-5 parts of a crosslinking agent, 2-10 parts of an inorganic filler, 0.5-1.5 parts of an inorganic filler dispersing wetting auxiliary agent, 0.5-1 part of a stabilizer, 0.1-0.5 part of a degassing agent, and 1-2 parts of a leveling agent. With targeted selection of the inorganic components for modification treatment on polycaprolactone, the polycaprolactone modified material exerts excellent impact-resistance strength and creeping resistance. The material allows the degradable 3D printing material to exert better mechanical properties while broadening the 3D printing material type.

Description

technical field [0001] The invention relates to a polycaprolactone material, in particular to a biodegradable 3D printing modified polycaprolactone material. Background technique [0002] With the emergence of 3D printing products, 3D printing technology is gradually being understood by people. 3D printing technology is a kind of rapid prototyping technology. It is a technology based on digital model files and using bondable materials such as powdered metal or plastic to construct objects by stacking and accumulating layer by layer. In the past, it was often used to make models in the fields of mold manufacturing and industrial design, and is now gradually being used in the direct manufacture of some products. Recently, there have been reports that 3D printing parts will be used in the U.S. F-35 fighter jet, which is enough to illustrate the unique market advantages of 3D printing technology, such as low cost, no assembly, accurate physical replication, and reduced exhaust ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08K9/04C08K5/14C08K5/101C08K3/36C08K3/26C08K7/00C08K3/04
Inventor 李志波夏爽符文鑫张树升盛力林学春马永梅孙文华徐坚董金勇李春成
Owner INST OF CHEM CHINESE ACAD OF SCI
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