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Thermoplastic film and preparation method

A thermoplastic, film technology, used in flat products, applications, household appliances, etc., can solve the problems of low melt viscosity of blends, high melt viscosity films, etc.

Active Publication Date: 2018-03-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 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 problem that low melt viscosity is required to prepare films, and a thermoplastic Films, especially thermoplastic films of thermoplastic cellulose and aliphatic aromatic copolyester blends with special rheological properties, the blend material used in the film can effectively change the viscosity of the blend to "unexpected" Lower than the theoretical viscosity of the blending addition of thermoplastic cellulose and aliphatic aromatic copolyester starting materials; so that the blend has the processing performance of thermoplastic film at a lower temperature, which is better than the existing Technological homogeneous blends and, due to the blend's low melt viscosity, allow for more energy-efficient processing

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0111] 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

[0113] 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

[0115] 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 TM The 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 mi...

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Abstract

The invention relates to a thermoplastic film, and mainly solves the technical problems in the prior art that thermoplastic cellulose has high viscosity and poor film forming performance in a low temperature processing process, and a film product is poor in stretchability, and thus the application fields are limited. According to the technical scheme, 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 employing a continuous melt extrusion blending method. The melt viscosity of the blendis lower than a blending addition theoretical value of the two starting materials under a low shear rate condition by at least about 20%, and is lower than the blending addition theoretical value ofthe two starting materials under a high shear rate condition by at least 20%. The technical scheme disclosed by the invention solves the above problems better. The application range of thermoplastic cellulose films is effectively expanded, and due to the low melt viscosity of the blend, the processing process is more energy-efficient and the prepared thermoplastic film can be used in industrial production of biodegradable material films.

Description

technical field [0001] The invention belongs to the field of blend materials of thermoplastic cellulose and aliphatic aromatic copolyester, and relates to a thermoplastic film, specifically a thermoplastic cellulose with special rheological properties and aliphatic aromatic copolyester. Blend thermoplastic film, the present invention also relates to a method for preparing thermoplastic cellulose and aliphatic aromatic copolyester blend film with special rheological properties. technical background [0002] Cellulose is the organic polymer with the largest reserves on the earth, and it is also the biomass film with the largest renewable amount every year. Cellulose is the structural film 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 (Ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L1/14B29D7/01
CPCB29D7/01C08J5/18C08J2301/14C08J2367/02C08J2401/14C08J2467/02C08L1/14C08L67/02C08L2203/16
Inventor 詹姆斯·洪学·王周炳贾钦
Owner CHINA PETROLEUM & CHEM CORP