Biodegradable polyester composition

A biodegradable polyester and biodegradable technology is applied in the field of biodegradable polyester compositions to achieve the effects of excellent food contact performance, improvement of poor winding, and excellent winding performance

Inactive Publication Date: 2018-05-08
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Amide lubricants will decompose or migrate and precipitate in a long-term acidic environment, so there is a certain risk of food contact

Method used

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  • Biodegradable polyester composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-9 and comparative example 1-3

[0038] According to the formula shown in Table 1, mix PBAT, PLA, starch, inorganic filler, plasticizer, surfactant, wax and silicon dioxide, put them into a single-screw extruder, extrude at 140°C-240°C, Granulating to obtain a biodegradable polyester composition. The performance test data are shown in Table 1.

[0039] Performance evaluation method:

[0040] Evaluation method of biodegradable polyester composition film winding performance (dynamic friction coefficient, ud, inner-inner): (dynamic friction coefficient meter MXD-02, Jinan Languang Electromechanical Technology Co., Ltd.) using a test plate (placed in the horizontal operation on the platform), one biodegradable polyester composition sample is fixed on the test board with double-sided tape or other means, and the other biodegradable polyester composition sample is cut properly and fixed on the special slide board, and then Place the slide plate on the center of the first sample on the test plate according to the ...

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PUM

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Abstract

The invention discloses a biodegradable polyester composition. The biodegradable polyester composition comprises the following components: i) 52 to 70 parts of biodegradable aliphatic-aromatic polyester; ii) 4 to 9 parts of polylactic acid; iii) 20 to 30 parts of starch; and iv) 0 to 8 parts of an inorganic filling material. According to the invention, silicon dioxide is added into the biodegradable polyester composition, and the content of the silicon dioxide in the composition is controlled in a range of 0.1% to 0.5%, so the phenomenon of poor rolling of the biodegradable polyester composition in the process of film blowing can be greatly improved; the phenomenons of slipping and roll sticking of a thin film do not occur; and the thin film shows excellent rolling performance and has excellent food contact performance.

Description

technical field [0001] The invention belongs to the field of polymer material modification, and in particular relates to a biodegradable polyester composition. Background technique [0002] Biodegradable polyester is a kind of polymer material made of biological resources. Compared with petroleum-based polymers that use petrochemical resources as raw materials, biodegradable polyesters can degrade in biological or biochemical processes or in biological environments, and are currently very active in the research of biodegradable plastics and have the best market applications. one of the materials. [0003] Biodegradable polyester film is one of the important application fields of biodegradable polyester at present, mainly including food bags, garbage bags, shopping bags and plastic film. In the process of preparing biodegradable polyester film by blow molding, the continuous winding of the film is a key factor affecting the production efficiency of the film, but the biodegr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/04C08L3/02C08K13/02C08K5/20C08K3/34C08K3/26C08K3/36
Inventor 欧阳春平袁志敏蔡彤旻黄险波曾祥斌焦建熊凯杨晖麦开锦董学腾卢昌利
Owner KINGFA SCI & TECH CO LTD
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