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Thermoplastic cellulose and aliphatic copolyester blend injection molding product and preparation method

A technology for aliphatic copolyester and injection molding products, which is applied in the field of injection molding products of thermoplastic cellulose and aliphatic copolyester blends, and can solve the problems of high melt viscosity and low melt viscosity of blends.

Active Publication Date: 2021-02-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] One of the technical problems solved by the present invention is that the melt viscosity of thermoplastic cellulose and aliphatic copolyester blends in the prior art is too high to be applied to injection molding in the field of injection molded products requiring low melt viscosity. Injection molding products of thermoplastic cellulose and aliphatic copolyester blends with special rheological properties. The injection molding products use thermoplastic cellulose and aliphatic copolyester blend materials to effectively reduce the viscosity of the blend to "meaning" Unexpectedly, it is lower than the theoretical viscosity of thermoplastic cellulose and aliphatic copolyester starting materials for blending addition; so that the blend has the processing performance of preparing injection molded products 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 copolyester blend injection molding product and preparation method
  • Thermoplastic cellulose and aliphatic copolyester blend injection molding product and preparation method
  • Thermoplastic cellulose and aliphatic copolyester blend injection molding product and preparation method

Examples

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Effect test

Embodiment 1

[0101] MD 3001 PBSA and Eastman TM CAB-381-0.5 in PolyLabHAAKE 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 MD 3001 PBSA particles, the speed is: 1680g / hr, and the volumetric powder feeder after calibration is used for Eastman TM The feeding rate of CAB-381-0.5 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 48-52%. 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...

Embodiment 2

[0103] MD 3001 PBSA and Eastman TM CAB-381-0.5 in PolyLabHAAKE 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 MD 3001 PBSA particles at a rate of 1365g / hr, while a calibrated volumetric powder feeder is used for Eastman TM The feeding rate of CAB-381-0.5 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 43-47%. 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 5.96 g / 10 min at...

Embodiment 3

[0105] MD 3001 PBSA and Eastman TM CAB-381-0.5 in PolyLabHAAKE 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 MD 3001 PBSA particles at a rate of 1050g / hr, while a calibrated volumetric powder feeder is used for Eastman TM The feeding rate of CAB-381-0.5 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 41-43%. 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 ...

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Abstract

The invention relates to an injection molding product of a blend of thermoplastic cellulose and aliphatic copolyester, which mainly solves the technical problems of high viscosity and poor injection molding processability of thermoplastic cellulose in the low-temperature processing process in the prior art, which limits its application field . The present invention adopts a blend composed of 20% to 80% by mass of thermoplastic cellulose and 80% to 20% by mass of aliphatic copolyester, which is prepared by a continuous melt extrusion blending method , the melt viscosity of the blend is at least about 30% lower than the theoretical value of the blending addition of the two starting materials under low shear rate conditions; The technical proposal that the theoretical addition value is at least 30% lower solves this problem well, and can be used in the industrialized production of thermoplastic cellulose and aliphatic copolyester injection molding products.

Description

technical field [0001] The invention belongs to the field of blend materials of thermoplastic cellulose and aliphatic copolyester, and specifically relates to a blend injection molding product of thermoplastic cellulose and aliphatic copolyester with special rheological properties. The invention also relates to And a method for preparing thermoplastic cellulose and aliphatic copolyester blend injection molding products with special rheological properties. [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 such as cellophane, viscose (Rayon) and s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L1/14B29C45/16
CPCB29C45/1615C08L1/14C08L67/02C08L2205/025C08L2205/035
Inventor 詹姆斯·洪学·王周炳
Owner CHINA PETROLEUM & CHEM CORP
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