Preparation method of full biodegradation film

A degradable film and all-biological technology, which is applied in the field of film-level resin modification and film preparation, can solve the problems of white pollution, high cost, and impact on acceptance, and achieve reduced production costs, good elongation at break, and high elasticity good modulus

Inactive Publication Date: 2013-12-11
DONGGUAN XINHAI ENVIRONMENT PROTECTION MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rapid development of plastics has also brought about two serious problems: first, a large amount of plastic waste has brought unbearable pollution to the environment, and the problem of white pollution has plagued the world; second, plastic products are produced and discarded. In the process of processing, a large amount of carbon dioxide emissions are generated
[0004] PBAT has superior physical properties and degradability, but ordinary PBAT also has defects such as low elongation at break, high cost, and slow degradation speed, which affect its acceptance in the market

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Weigh 40 parts of PBAT, 30 parts of starch, 10 parts of PCL, 10 parts of epoxidized soybean oil, and 10 parts of talcum powder;

[0027] (2) Add the raw materials into the high-speed mixer in a certain order. The order of addition is starch, talcum powder, PCL, epoxy soybean oil, and PBAT; the mixing speed is turned to high speed, and the high-speed mixing is about 15 minutes ready to discharge;

[0028] (3) Add the mixed raw materials into the hopper of the twin-screw extruder, set the temperature zones of the twin-screw extruder, the operating temperature is 100-180°C, and the PBAT modification can be obtained after strand cutting Sexual resin;

[0029] (4) Put the PBAT modified resin into a vacuum rake dryer, set the temperature at 80°C, keep the vacuum bag at 0.01MPa, and dry it for about 4 hours until the water content of the resin is ≤500ppm;

[0030] (5) Put the dried PBAT modified resin into the film blowing machine to blow the film. The operating temperat...

Embodiment 2

[0032] (1) Weigh 50 parts of PBAT, 30 parts of starch, 10 parts of PCL, 10 parts of epoxidized soybean oil, and 0 parts of talcum powder;

[0033] (2) Add the raw materials into the high-speed mixer in a certain order. The order of addition is starch, talcum powder, PCL, epoxy soybean oil, and PBAT; the mixing speed is set to high speed, and the high-speed mixing is about 15 minutes ready to discharge;

[0034] (3) Add the mixed raw materials into the hopper of the twin-screw extruder, set the temperature zones of the twin-screw extruder, the operating temperature is 100-180°C, and the PBAT modification can be obtained after strand cutting Sexual resin;

[0035] (4) Put the PBAT modified resin into a vacuum rake dryer, set the temperature at 80°C, keep the vacuum bag at 0.01MPa, and dry it for about 4 hours until the water content of the resin is ≤500ppm;

[0036] (5) Put the dried PBAT modified resin into the film blowing machine to blow the film. The operating temperature ...

Embodiment 3

[0038] (1) Weigh 55 parts of PBAT, 30 parts of starch, 5 parts of PCL, 10 parts of epoxidized soybean oil, and 0 parts of talcum powder;

[0039] (2) Add the raw materials into the high-speed mixer in a certain order. The order of addition is starch, talcum powder, PCL, epoxy soybean oil, and PBAT; the mixing speed is set to high speed, and the high-speed mixing is about 15 minutes Ready to ship.

[0040] (3) Add the mixed raw materials into the hopper of the twin-screw extruder, set the temperature zones of the twin-screw extruder, the operating temperature is 100-180°C, and the PBAT modification can be obtained after strand cutting Sexual resin;

[0041] (4) Put the PBAT modified resin into a vacuum rake dryer, set the temperature at 80°C, keep the vacuum bag at 0.01MPa, and dry it for about 4 hours until the water content of the resin is ≤500ppm;

[0042] (5) Put the dried PBAT modified resin into the film blowing machine to blow the film. The operating temperature of eac...

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Abstract

The invention discloses a preparation method of a full biodegradation film, which takes poly adipic acid/polybutylene terephthalate (PBAT) and starch as base materials, poly-epsilon carpolaction (PCL), epoxidized soybean oil (ESO), and phosphorous acid dialkyl ester as plasticizers, and montmorillonoid or calcium carbonate, talcum powder and the like as inorganic fillers. The method comprises the steps that modification and pelleting are performed in a twin screw; modified resin is added to a film blowing machine for film blowing; and the full biodegradation film can be obtained finally. The full biodegradation film produced by the method is better in physical characteristic, can be directly prepared into a film bag, and can serve as a daily-used packaging film, a waistcoat bag, a food packaging bag and the like; the preparation method of the full biodegradation film is simple in technology, and easy to control, and is suitable for industrial mass production; the film bag produced by the method is high in strength, can be biodegraded fully after use, and is easy to dispose; and environmental pollution is reduced.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a film-level resin modification and film preparation method using PBAT and starch as base materials. Background technique [0002] In the past 100 years, with the development of polymer material technology, the plastic industry has grown from scratch, and the world's plastic consumption has also increased. According to statistics, in 2011, the global plastic consumption has reached nearly 200 million tons. However, the rapid development of plastics has also brought about two serious problems: first, a large amount of plastic waste has brought unbearable pollution to the environment, and the problem of white pollution has plagued the world; second, plastic products are produced and discarded. During the processing, a large amount of carbon dioxide emissions are generated. [0003] In the field of packaging materials, PBAT (polybutylene adipate / terephthalate) is the bio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L3/02C08L67/04C08K5/1515C08K5/524C08K3/34C08K3/26
Inventor 杨海全
Owner DONGGUAN XINHAI ENVIRONMENT PROTECTION MATERIAL
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