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PBAT composite film based on irradiation modification and preparation method thereof

A composite film and film product technology, applied in the field of irradiation modified fully biodegradable PBAT composite film and its preparation, can solve the problems of poor performance retention, weak anti-aging ability, high material cost, etc. Complementary properties, crack reduction effect

Inactive Publication Date: 2015-11-25
SHANGHAI HONGRUI CHEM PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

What needs to be recognized is that although PBAT film has been used in mulch and bag products to a certain extent, it has poor performance retention on mulch, is easy to break, and is limited by insufficient performance (such as low strength, poor barrier property, and weak anti-aging ability. etc.) and the high cost of materials, in order to apply in a wider range, it needs to be modified

Method used

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  • PBAT composite film based on irradiation modification and preparation method thereof
  • PBAT composite film based on irradiation modification and preparation method thereof
  • PBAT composite film based on irradiation modification and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment provides a PBAT composite film based on radiation modification and a preparation method thereof, the components of the composite film are shown in Table 1; the preparation method of the composite film is as follows:

[0042] Raw material pretreatment: Take PBAT that was vacuum-dried at 30°C for 10 hours, mix the components and content ratios in Example 1 in Table 1, stir at 600 r / min at room temperature, and stir at high speed for 3 minutes;

[0043] Extrusion granulation: twin-screw extruder melt blending, extrusion granulation, extrusion temperature is 100-135 °C, die temperature of screw extruder is 120-200 °C, screw length-to-diameter ratio is 40:1 , speed 250r / min;

[0044] Processing and molding: vacuum drying at 30°C for 12 hours, blow molding at 110-130°C;

[0045] Irradiation treatment: The film was irradiated with 220 kGy electron beams to prepare a composite film (sample number 1).

Embodiment 2

[0047] This embodiment provides a PBAT composite film based on radiation modification and a preparation method thereof, the components of the composite film are shown in Table 1; the preparation method of the composite film is as follows:

[0048] Raw material pretreatment: Take PBAT and PLA that were vacuum-dried at 80°C for 2 hours, mix the components and content ratios shown in Example 2 in Table 1, and stir at a high speed of 800 r / min for 3 minutes at room temperature;

[0049] Extrusion granulation: twin-screw extruder melt blending, extrusion granulation, extrusion temperature is 110-180 °C, die temperature of screw extruder is 120-200 °C, screw length-to-diameter ratio is 40:1 , speed 150r / min;

[0050] Processing and molding: vacuum drying at 80°C for 4 hours, blow molding at 135-170°C;

[0051] Irradiation treatment: The film was irradiated with 160kGy electron beams to prepare a composite film (sample number 2).

Embodiment 3

[0053] This embodiment provides a PBAT composite film based on radiation modification and a preparation method thereof, the components of the composite film are shown in Table 1; the preparation method of the composite film is as follows:

[0054] Raw material pretreatment: Take PBAT and polyhydroxyalkanoate that were vacuum-dried at 60°C for 6 hours, mix the components and content ratios shown in Example 3 in Table 1, and stir at 1000r / min at a high speed for 3 minutes at room temperature;

[0055] Extrusion granulation: twin-screw extruder melt blending, extrusion granulation, extrusion temperature is 110-190 ℃, die temperature of screw extruder is 120-200 ℃, screw length-to-diameter ratio is 40:1 , speed 150r / min;

[0056] Processing and molding: vacuum drying at 80°C for 10 hours, blowing and casting at 160-190°C to form a film;

[0057] Irradiation treatment: The film was irradiated with 60 kGy electron beams to prepare a composite film (sample number 3).

[0058] Table...

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Abstract

The invention discloses a PBAT composite film based on irradiation modification and a preparation method thereof. The composite film comprises, by weight, 100 parts of PBAT, 10-100 parts of remaining biodegradable materials, 0.1-7 parts of compatilizer, 0.1-6 parts of irradiation sensitizer, 0.1-5 parts of antioxidant, 0.1-4 parts of light stabilizer, 0.1-5 parts of anti-ultraviolet agents and 0-4 parts of lubricant. Compared with the prior art, by means of the PBAT composite film based on the irradiation modification, the biodegradability of the material is maintained, the excellent mechanical strength, barrier performance, aging resistance and the like are achieved, and the application of the biodegradable film is expanded.

Description

technical field [0001] The invention belongs to the field of radiation modification of biodegradable composite materials, in particular to a PBAT composite film based on radiation modification and a preparation method thereof, in particular to a radiation modified fully biodegradable PBAT composite film and a preparation method thereof , also belongs to the field of environmental science and technology. Background technique [0002] Due to the increasingly serious global environmental pollution caused by petroleum-based plastics, biodegradable plastics with renewable, low-carbon, and environmentally friendly features have become the main development trend of the polymer material industry. [0003] Polybutylene terephthalate-adipate (PBAT) is an important biodegradable material, which belongs to thermoplastic polyester. Under the action of natural microorganisms such as mold and algae, they can be degraded or decomposed by chemical, biological or physical actions, and finall...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L67/04C08K5/524C08K5/134C08K5/098C08K5/3435C08K5/132C08K5/526C08K5/14B29C47/92B29C48/92
Inventor 徐友利张伟阳
Owner SHANGHAI HONGRUI CHEM PROD CO LTD
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