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Biodegradable polyester composition

A technology of copolyester and composition, which is applied in the field of biodegradable copolyester composition, can solve the problems of high cost, heat resistance, insufficient mechanical performance, processing performance and anti-aging performance, and limit application fields, etc., to reduce Production cost, excellent heat resistance, effect of widening application fields

Inactive Publication Date: 2009-08-19
马世金
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with traditional general-purpose plastics, these new materials have obvious deficiencies in heat resistance, mechanical properties, processing properties and anti-aging properties, and their high cost limits the application fields of products.

Method used

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  • Biodegradable polyester composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Polybutylene succinate-terephthalate 62Kg

[0022] Polylactic acid 34Kg

[0023] Dimethyl phthalate 1Kg

[0024] Talc powder: 3Kg

[0025] Put the dried above-mentioned materials into a high-speed mixer and mix for 30 minutes, then enter into a twin-screw extruder, and make a biodegradable copolyester composition masterbatch in the twin-screw extruder. The temperature of each section of the twin-screw extruder is as follows: first section: 170°C; second section: 150°C; third section: 150°C; fourth section: 150°C; fifth section: 150°C;

Embodiment 2

[0027] Polybutylene succinate-adipate 70Kg

[0028] Polylactic acid 26Kg

[0029] Diethyl phthalate 1Kg

[0030] Talc powder 2Kg

[0031] Bamboo Powder 1Kg

[0032] Put the dried above-mentioned materials into a high-speed mixer and mix for 30 minutes, then enter into a twin-screw extruder, and make a biodegradable copolyester composition masterbatch in the twin-screw extruder. The temperature of each section of the twin-screw extruder is as follows: first section: 170°C; second section: 150°C; third section: 150°C; fourth section: 150°C; fifth section: 150°C;

Embodiment 3

[0034] Polybutylene succinate-adipate 45Kg

[0035] Polylactic acid 50Kg

[0036] Dimethyl phthalate 2Kg

[0037] Bamboo powder 1Kg

[0038] Nano calcium carbonate 2Kg

[0039] Put the dried above-mentioned materials into a high-speed mixer and mix for 30 minutes, then enter into a twin-screw extruder, and make a biodegradable copolyester composition masterbatch in the twin-screw extruder. The temperature of each section of the twin-screw extruder is as follows: first section: 170°C; second section: 150°C; third section: 150°C; fourth section: 150°C; fifth section: 150°C;

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Abstract

The invention discloses a biodegradable copolyester compound which comprises the components with the weight percentage as follows: 45 percent to 90 percent of poly butylene succinate terpolymer, 5 percent to 50 percent of poly lactic acid, 1 percent to 2 percent of plasticizer and 1 percent to 5 percent of filling, wherein, the poly butylene succinate terpolymer is at least one of poly butylene succinate-adipate, poly butylene succinate-terephthalic acid and poly butylene succinate-lactic acid; the plasticizer is at least one of dimethyl phthalate and diethyl phthalate; and the filling is at least one of talcum powder, bamboo powder, nanometer calcium carbonate and nanometer titanium-silicon complexing agent. The biodegradable copolyester compound integrates the advantages of various biodegradable materials to ensure that the biodegradable copolyester compound not only has good heat resistance, mechanical performance, processability and aging resistance but also reduces the production cost and develops the application field of the biodegradable material under the precondition of not changing the biodegradability.

Description

(1) Technical field: [0001] The invention relates to a biodegradable material, mainly to a biodegradable copolyester composition. (two) background technology: [0002] With the widespread use of plastics, plastic waste has become one of the main sources of environmental pollution. With the increasingly serious environmental pollution caused by plastic waste, countries around the world have successively introduced various measures to limit the use of traditional plastics. Biodegradable materials are one of the ideal materials to replace traditional plastics. Under the action of bacteria or enzymes, they can eventually degrade into substances such as carbon dioxide and water, which are harmless to the environment. At present, the biodegradable materials that realize industrial production mainly include polybutylene succinate (PBS for short), polylactic acid (PLA for short), and the like. However, compared with traditional general-purpose plastics, these new materials have ob...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L67/04C08K5/12C08K3/34C08K3/26
Inventor 谭鹏杨军钱毓秀马世金
Owner 马世金
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