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Thermoplastic cellulose and aliphatic aromatic copolyester blend 3D printing filament and preparation method

An aliphatic aromatic, 3D printing technology, applied in the direction of additive processing, etc., can solve the problems of non-application, high melt viscosity, low melt viscosity of blends, etc.

Active Publication Date: 2020-09-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] One of the technical problems solved by the present invention is that the melt viscosity of thermoplastic cellulose and aliphatic aromatic copolyester blends in the prior art is too high to be applied to the field requiring low melt viscosity. Special rheological properties of thermoplastic cellulose and aliphatic aromatic copolyester blend 3D printing filament, the blend material selected for the 3D printing filament can effectively reduce the viscosity of the blend "unexpectedly" The theoretical viscosity of the blending addition is lower than that of thermoplastic cellulose and aliphatic aromatic copolyester starting materials; so that the blend has the processing performance of being prepared into 3D printing filament at a lower temperature, which is better than State-of-the-art homogeneous blends, and due to the blend's low melt viscosity, allow for more energy-efficient processing

Method used

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  • Thermoplastic cellulose and aliphatic aromatic copolyester blend 3D printing filament and preparation method
  • Thermoplastic cellulose and aliphatic aromatic copolyester blend 3D printing filament and preparation method
  • Thermoplastic cellulose and aliphatic aromatic copolyester blend 3D printing filament and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] F BX 7011PBAT and Eastman TM CAB-531-1 PolyLab HAAKE mentioned above TM Rheomex OS PTW16 co-rotating twin-screw extruder for melt blending extrusion pelletization. In the first section of the extruder, a calibrated volumetric particle feeder is used Feeding of F BX 7011PBAT particles, the speed is: 1680g / hr, and the volumetric powder feeder after calibration is used for Eastman TM The feeding rate of CAB-531-1 powder is: 420g / hr. The temperatures of sections 2-11 of the extruder are: 140°C, 150°C, 160°C, 160°C, 160°C, 160°C, 160°C, 160°C, 160°C and 160°C, the screw speed is set at 200rpm, the torque At 50-60%. The extruder is equipped with a circular die with a diameter of 3 mm. After the spline is extruded from the die and cooled in a water bath, it is cut into cylindrical particles of about 3 mm with a pelletizer. The particles were collected, pumped in a vacuum oven at 60°C for 4 hours, and packaged for use. The melt index of the particles at 190° C. under...

Embodiment 2

[0110] F BX 7011PBAT and Eastman TM CAB-531-1 PolyLab HAAKE mentioned above TM Rheomex OS PTW16 co-rotating twin-screw extruder for melt blending extrusion pelletization. In the first section of the extruder, a calibrated volumetric particle feeder is used Feeding of F BX 7011PBAT particles, the speed is: 1365g / hr, and the volumetric powder feeder after calibration is used for Eastman TM The feeding rate of CAB-531-1 powder is: 735g / hr. The temperatures of sections 2-11 of the extruder are: 140°C, 150°C, 160°C, 160°C, 160°C, 160°C, 160°C, 160°C, 160°C and 160°C, the screw speed is set at 200rpm, the torque At 45-55%. The extruder is equipped with a circular die with a diameter of 3 mm. After the spline is extruded from the die and cooled in a water bath, it is cut into cylindrical particles of about 3 mm with a pelletizer. The particles were collected, pumped in a vacuum oven at 60°C for 4 hours, and packaged for use. The melt index of the particles at 190° C. under...

Embodiment 3

[0112] F BX 7011PBAT and Eastman TM CAB-531-1 PolyLab HAAKE mentioned above TM Rheomex OS PTW16 co-rotating twin-screw extruder for melt blending extrusion pelletization. In the first section of the extruder, a calibrated volumetric particle feeder is used Feeding of F BX 7011PBAT particles, the speed is: 1050g / hr, and the volumetric powder feeder after calibration is used for Eastman TMThe feeding rate of CAB-531-1 powder is: 1050g / hr. The temperatures of sections 2-11 of the extruder are: 140°C, 150°C, 160°C, 160°C, 160°C, 160°C, 160°C, 160°C, 160°C and 160°C, the screw speed is set at 200rpm, the torque At 45-55%. The extruder is equipped with a circular die with a diameter of 3 mm. After the spline is extruded from the die and cooled in a water bath, it is cut into cylindrical particles of about 3 mm with a pelletizer. The particles were collected, pumped in a vacuum oven at 60°C for 4 hours, and packaged for use. The particles had a melt index of 20.81 g / 10 min ...

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Abstract

The invention relates to a thermoplastic cellulose and aliphatic aromatic copolyester blend 3D printed wire, and mainly solves the problems in the prior art that thermoplastic cellulose is difficultlyapplied to 3D printing field because of high viscosity of the thermoplastic cellulose during low temperature processing and poor toughness of a product. According to the present invention, a blend consisting of 20% to 80% by mass of thermoplastic cellulose and 80% to 20% by mass of an aliphatic aromatic copolyester is employed and is prepared by a continuous melt-extrusion blending process. The melt viscosity of the blend is at least about 20% lower than a blending addition theoretical value of the two starting materials under a low shear rate condition, and is at least 20% lower than the blending addition theoretical value of the two starting materials under a high shear rate condition. The technical scheme solves the above problem better and can be used in industrial production of thermoplastic cellulose and aliphatic aromatic copolyester blend 3D printed wires.

Description

technical field [0001] The invention belongs to the field of blend materials of thermoplastic cellulose and aliphatic aromatic copolyester, and specifically relates to a 3D printing filament of a blend of thermoplastic cellulose and aliphatic aromatic copolyester with special rheological properties material, the present invention also relates to a method for preparing thermoplastic cellulose and aliphatic aromatic copolyester blends with special rheological properties for 3D printing filaments. [0002] technical background [0003] Cellulose is the organic polymer with the largest reserves on the earth, and it is also the biomass material with the largest annual renewable amount. Cellulose is the structural material in the cell walls of green plants, woody plants contain about 30-40% cellulose, and cotton fibers contain about 90% cellulose. The main industrial use of cellulose is paper and cardboard, and a small amount of cellulose is used to prepare regenerated cellulose s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L1/14B33Y70/00
CPCB33Y70/00C08L1/14C08L67/02
Inventor 詹姆斯·洪学·王周炳况军白瑜
Owner CHINA PETROLEUM & CHEM CORP