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Biodegradable foamed material and method for utilizing biodegradable foamed material to manufacture heat-resistant foamed lunch box

A biodegradable and foaming material technology, applied in the field of foaming materials, can solve problems such as poor fluidity, poor processing performance, rotation and translation restrictions, etc., to improve heat resistance, increase melt strength, and improve foaming performance effect

Pending Publication Date: 2019-05-17
温州信环生物材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the heat resistance of polylactic acid can be improved by cross-linking, but the rotation and translation of the cross-linked molecular chain of polylactic acid are greatly restricted after cross-linking, the fluidity is poor, and its processing performance is deteriorated.

Method used

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  • Biodegradable foamed material and method for utilizing biodegradable foamed material to manufacture heat-resistant foamed lunch box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) The formula of the biodegradable foaming material is (by mass parts):

[0034] Polylactic acid (8052D, NatureWorks, USA): 100;

[0035] Chain extender (S-MA-GMA, ADR 4370, BASF, Germany): 0.8

[0036] Triallyl isocyanurate: 0.6;

[0037] Tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester: 0.2;

[0038] Other additives: 0.5.

[0039] 2) Preparation process of biodegradable foam sheet

[0040] First dry polylactic acid in a dryer at 80°C for 10 hours, then dry polylactic acid, ADR 4370, triallyl isocyanurate, tetrakis[β-(3,5-di-tert-butyl-4-hydroxybenzene base) propionic acid] pentaerythritol ester and other additives are added to the high-speed mixer according to the above-mentioned mass fraction and mixed evenly, and supercritical carbon dioxide is used as a foaming agent to continuously extrude and foam the described The mixture is obtained from the biodegradable foam sheet.

[0041] 3) thermoforming the biodegradable foamed sheet in...

Embodiment 2

[0044] 1) The formula of the biodegradable foaming material is (by mass parts):

[0045] Polylactic acid (8052D, NatureWorks, USA): 100;

[0046] Chain extender (S-MA-GMA, ADR 4370, BASF, Germany): 0.8

[0047] Triallyl isocyanurate: 0.1;

[0048] Tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester: 0.2;

[0049] Other additives: 0.5.

[0050] 2) Preparation process of biodegradable foam sheet

[0051] First dry polylactic acid in a dryer at 80°C for 10 hours, then dry polylactic acid, ADR 4370, triallyl isocyanurate, tetrakis[β-(3,5-di-tert-butyl-4-hydroxybenzene base) propionic acid] pentaerythritol ester and other additives are added to the high-speed mixer according to the above-mentioned mass fraction and mixed evenly, and supercritical carbon dioxide is used as a foaming agent to continuously extrude and foam the described The mixture is obtained from the biodegradable foam sheet.

[0052] 3) thermoforming the biodegradable foamed sheet in...

Embodiment 3

[0055] 1) The formula of the biodegradable foaming material is (by mass parts):

[0056] Polylactic acid (8052D, NatureWorks, USA): 100;

[0057] Chain extender (S-MA-GMA, ADR 4370, BASF, Germany): 0.8

[0058] Triallyl isocyanurate: 5;

[0059] Tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester: 0.2;

[0060] Other additives: 0.5.

[0061]2) Preparation process of biodegradable foam sheet

[0062] First dry polylactic acid in a dryer at 80°C for 10 hours, then dry polylactic acid, ADR 4370, triallyl isocyanurate, tetrakis[β-(3,5-di-tert-butyl-4-hydroxybenzene base) propionic acid] pentaerythritol ester and other additives are added to the high-speed mixer according to the above-mentioned mass fraction and mixed evenly, and supercritical carbon dioxide is used as a foaming agent to continuously extrude and foam the described The mixture is obtained from the biodegradable foam sheet.

[0063] 3) thermoforming the biodegradable foamed sheet into ...

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Abstract

The invention relates to a biodegradable foamed material and a method for utilizing the biodegradable foamed material to manufacture a heat-resistant foamed lunch box. The biodegradable foamed material is prepared from the following raw materials in parts by mass: 100 parts of polylactic acid, 0.1-5 parts of a chain extender, 0.1-5 parts of a cross-linking agent, 0.1-5 parts of an antioxidant and0.1-5 parts of other additives. The technical scheme has the technical effects that the problems of poor heat resistance of the polylactic acid and poor processing performance of cross-linked polylactic acid are solved, and meanwhile the biodegradable performance of the heat-resistant foamed lunch box is maintained.

Description

technical field [0001] The invention relates to a biodegradable foam material and a method for manufacturing a heat-resistant foam lunch box using it. Background technique [0002] With the continuous development of the catering industry and the takeaway industry, a huge-scale industrial chain of food packaging materials has been formed, and the extensive use of non-renewable petroleum-based polymer materials such as polystyrene and polypropylene in this field has caused serious damage to the ecological environment. The sustainable development of human society is facing unprecedented severe challenges. Polylactic acid (PLA, Polylactic acid), as the most typical bio-based polymer material, is not only derived from renewable plant resources, but also can be biodegraded into non-toxic and harmless carbon dioxide and water under natural conditions. However, polylactic acid is a linear polyester with few branched chains and entanglement points in its molecular structure, low mel...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08K5/134C08J9/12C08J3/24C08J3/28
Inventor 黄承哲全福承
Owner 温州信环生物材料科技有限公司
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