High-barrier biodegradable material as well as preparation method and application thereof

A degradable material and high barrier technology, which is applied in the direction of bio-packaging, sustainable manufacturing/processing, and sustainable packaging industry. Gas barrier properties and the effect of a wide range of raw material sources

Pending Publication Date: 2022-06-03
宁波昌亚新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that existing biodegradable films cannot meet the needs of food packaging and agricultural production in terms of gas barrier properties, the present invention provides a high-barrier biodeg...

Method used

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  • High-barrier biodegradable material as well as preparation method and application thereof
  • High-barrier biodegradable material as well as preparation method and application thereof
  • High-barrier biodegradable material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4 and comparative example 1～4

[0038]The polyfurandicarboxylic acid / butylene diglycolate used is prepared by the following method: dimethyl furan-2,5-dicarboxylate, diglycolic acid and butanediol are in a mole ratio of 1:1:3 The ratio was added to the reaction kettle with nitrogen, mixed with mechanical stirring, then dibutyltin oxide was added as a catalyst and the reaction temperature was raised to 180 ° C; after prepolymerization for 3-4 hours, antimony trioxide was added to the reaction kettle , the reaction temperature was raised to 220° C. and vacuumed to 30-50 Pa. After continuing the reaction for 2 h, the reaction was terminated to obtain polyfurandicarboxylic acid / butylene glycol ester with a weight-average molecular weight of 70,000 g / mol.

[0039] In the above-mentioned polyfurandicarboxylic acid / butylene glycolate, the molar ratio of the first repeating unit of the structure shown in formula (I) and the second repeating unit of the structure shown in formula (II) is 1:1,

[0040]

[0041] The...

Embodiment 1

[0044] (1) Dry PBDF and PGA in a vacuum oven with a temperature of 60° C. for 10 hours; then 80 parts of dried PBDF, 20 parts of dried PGA, 1 part of Joncryl ADR-4468, 0.5 part of epoxy castor oil , 0.4 parts of silicon dioxide, 0.3 parts of hindered phenolic antioxidant 1010 and 0.3 parts of phosphite antioxidant 168 were added to the high-speed mixer, and stirred and mixed evenly at a temperature not higher than 40 ° C to obtain cold mixing material;

[0045] (2) adding above-mentioned cold mixing material to the twin-screw extruder hopper with a length-to-diameter ratio of 40:1, melt blending, extrusion granulation to obtain high-barrier biodegradable material pellets; the setting of the twin-screw extruder The fixed temperature is 190°C, 200°C, 210°C, 215°C, 215°C, 220°C, 220°C, 225°C, 225°C, 225°C, 220°C in sequence from the feed port to the head, and the screw speed is 200rpm.

Embodiment 2

[0047] The high-barrier biodegradable material pellets were obtained with reference to the preparation process of Example 1, the difference being:

[0048] The raw material formula is: 70 parts of dried PBDF, 30 parts of dried PGA, 1 part of Joncryl ADR-4468, 0.5 part of epoxidized soybean oil, 0.4 part of oleic acid amide, 0.3 part of hindered phenolic antioxidant 1010 and 0.3 parts of phosphite antioxidant 168;

[0049] The set temperature of the twin-screw extruder is 190°C, 200°C, 210°C, 220°C, 220°C, 225°C, 225°C, 230°C, 230°C, 230°C, 225°C from the feed port to the head. .

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Abstract

The invention discloses a high-barrier biodegradable material, which is prepared from the following raw materials in parts by mass: 55 to 90 parts of polyfurandicarboxylic acid/butanediol diglycolate (PBDF); 10 to 45 parts of polyglycolic acid (PGA); 0.3 to 1.5 parts of a compatilizer; 0.2 to 1 part of epoxy vegetable oil; 0.1-2 parts of an anti-blocking agent; and 0.1-1 part of an antioxidant. According to the invention, a certain proportion of PGA is added into the biodegradable polyester PBDF with high gas barrier property, and compatibilization and plasticization are carried out on the blend by using the compatilizer and the epoxidized vegetable oil, so that the high-barrier biodegradable material with excellent gas barrier property, good mechanical property and good biodegradable property is prepared. After the high-barrier biodegradable material is subjected to blow molding to form a film, the high-barrier biodegradable material can be used as a film material to be applied to a food packaging film or an agricultural mulching film, and has a wide application prospect in the field of packaging or agricultural production.

Description

technical field [0001] The invention belongs to the technical field of biodegradable materials, and in particular relates to a high-barrier biodegradable material and a preparation method and application thereof. Background technique [0002] Plastic film has many advantages such as light weight and transparency, moisture resistance and oxygen resistance, good air tightness and good toughness, and is widely used in fields such as medical drugs, food packaging and agricultural mulch films. The use of plastic film products has brought great convenience to people's lives, but traditional plastic films are mainly made of polyethylene, polypropylene or polyvinyl chloride and other resins. After use, they are discarded and scattered in soil and water bodies. It cannot be degraded in a short time, thus causing serious damage to the ecological environment and even endangering the survival of humans and animals. [0003] In order to solve the problem of environmental pollution cause...

Claims

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Application Information

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IPC IPC(8): C08L67/06C08L67/04C08L91/00C08L63/00
CPCC08L67/06C08L2201/06C08L2201/14C08L2203/16C08L67/04C08L91/00C08L63/00Y02W90/10
Inventor 徐建海
Owner 宁波昌亚新材料科技股份有限公司
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