Biodegradable polypropylene carbonate composite material and preparation method thereof

A polypropylene carbonate and composite material technology is applied in the field of polypropylene carbonate composite film material and its preparation, and achieves the effects of good physical and chemical properties, heat resistance and dimensional stability.

Inactive Publication Date: 2011-02-02
CHINA NAT OFFSHORE OIL CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The PPC / PETG composite material can solve the problems of PPC film forming processability, product heat resistance stability, dimensional stability and physical and chemical properties.

Method used

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  • Biodegradable polypropylene carbonate composite material and preparation method thereof
  • Biodegradable polypropylene carbonate composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1, preparation PPC / PETG composite film

[0026] Weigh each component by the following parts by mass:

[0027] PPC60

[0028] PETG 40

[0029] Silica (heat-resistant stabilizer) 1

[0030] Triphenyl phosphite (antioxidant) 0.5

[0031] Stearamide (lubricant) 0.3

[0032] Benzoalkyl ether (photodecomposition agent) 0.2

[0033] Erucamide (anti-sticking agent) 1

[0034] Oxalic acid (biodegradation accelerator) 0.5

[0035] The preparation process is as follows:

[0036] The above raw materials were dried in a vacuum oven at 45°C for 5 hours, then mixed in a high-speed mixer at a speed of 25000r / min for 0.5-1 minute, and then entered into a twin-screw extruder at a temperature of 160°C for extrusion and granulation. The specific process is as follows: the mixed raw materials are discharged from the hopper, the pellets are extruded from the first zone to the die head to be extruded upward, and then blown into a cylindrical film bubble by air compression, ...

Embodiment 2

[0047] Embodiment 2, preparation PPC / PETG composite film

[0048] Weigh each component according to the following parts by mass:

[0049] PPC 70

[0050] PETG 30

[0051] Montmorillonite (heat-resistant stabilizer) 1

[0052] Bisphenol A (antioxidant) 0.5

[0053] Zinc stearate (lubricant) 0.3

[0054] Benzophenone (photodecomposition agent) 0.2

[0055] Silica (anti-dusting agent) 2

[0056] Citric acid (biodegradation accelerator) 0.5

[0057] The preparation process is as follows:

[0058] The above raw materials were dried in a vacuum oven at 45°C for 5 hours, then mixed in a high-speed mixer at a speed of 15000r / min for 0.5-1 minute, and then entered into a twin-screw extruder at a temperature of 160°C for extrusion and granulation. The specific process is as follows: the mixed raw materials are discharged from the hopper, the pellets are extruded from the first zone to the die head to be extruded upward, and then blown into a cylindrical film bubble by air compre...

Embodiment 3

[0068] Embodiment 3, preparation PPC / PETG composite film

[0069] Weigh each component according to the following parts by mass:

[0070] PPC 80

[0071] PETG20

[0072] Zinc oxide (heat-resistant stabilizer) 1

[0073] Bisphenol A (antioxidant) 0.5

[0074] Zinc stearate (lubricant) 0.3

[0075] Benzophenone (photodecomposition agent) 0.2

[0076] Silica (anti-dusting agent) 2

[0077] Citric acid (biodegradation accelerator) 0.5

[0078] The preparation process is as follows:

[0079] The above raw materials were dried in a vacuum oven at 45°C for 5 hours, then mixed in a high-speed mixer at a speed of 25000r / min for 0.5-1 minute, and then entered into a twin-screw extruder at a temperature of 160°C for extrusion and granulation. The specific process is as follows: the mixed raw materials are discharged from the hopper, the pellets are extruded from the first zone to the die head to be extruded upward, and then blown into a cylindrical film bubble by air compression,...

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Abstract

The invention discloses a biodegradable polypropylene carbonate composite material and a preparation method thereof. The composite material is prepared from 50 to 90 mass parts of polypropylene carbonate and 10 to 40 mass parts of polyethylene terephthalate-1,4-cyclohexane dimethanol ester serving as raw materials by the following steps of: drying the raw materials at the temperature of between 45 and 55 DEG C for 5 to 10 hours; mixing the raw materials in a high-speed mixer for 0.5 to 3 minutes; and melting, mixing, extruding and granulating the mixed raw materials at the temperature of 65 to 170 DEG C. A thin film product prepared from the biodegradable PPC type composite material of the invention by blow molding has high physical and chemical properties; the glass-transition temperature of the PPC / PETG composite thin film is up to 69.2 DEG C; the thermolysis temperature of 5 weight percent of the material is up to 289.7 DEG C; the longitudinal tensile strength of the composite thin film is up to 28.6MPa and the transverse tensile strength is up to 16.7MPa; the longitudinal breaking elongation is up to 561.9 percent and the transverse breaking elongation is up to 755.3 percent; and thus the application range of the completely biodegradable polyester, namely the PPC in the agriculture, foods and packaging industry is expanded.

Description

technical field [0001] The invention relates to a composite film material and a preparation method thereof, in particular to a biodegradable polypropylene carbonate composite film material and a preparation method thereof. Background technique [0002] Polypropylene carbonate (PPC), a fully biodegradable plastic polymerized from carbon dioxide and propylene oxide, not only finds a good solution to the problem of global warming, but also finds a way to meet the increasingly scarce and expensive oil and gas resources. Cheap carbon source chemical raw materials that can replace part of oil and gas resources. However, due to the relatively poor thermal and mechanical properties of PPC, the narrow processing temperature range and other factors limit the application of this material in industry. It is a simple and effective method to develop new materials by blending and modifying polymers with different properties to complement the deficiencies of the material properties. Compos...

Claims

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Application Information

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IPC IPC(8): C08K5/098C08K5/20C08K3/34C08K5/092C08K5/07C08K5/526C08K3/22C08K5/138C08K3/36B29C49/78B29B9/06B29C49/04B29C47/92B29B13/06C08L69/00C08L67/00C08K13/02B29C48/92
CPCB29C48/9185B29C48/04B29C48/10B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895B29C2948/92904
Inventor 林强潘莉莎傅送保徐鼎王国忠卢凌彬陈科宇刘慧宏王亮亮庞素娟徐建波曹阳陈步宁
Owner CHINA NAT OFFSHORE OIL CORP
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