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Degradable foam material and preparation method thereof

A foaming material and foaming agent technology, applied in the field of foaming materials, can solve problems such as low melt strength, poor cell structure and comprehensive mechanical properties, and achieve improved melt strength, cell uniformity and foaming The effect of high foam stability, ductility and comprehensive mechanical properties

Active Publication Date: 2021-06-25
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a degradable foaming material and its preparation method in order to overcome the problems of poor cell structure and comprehensive mechanical properties after foaming due to the low overall melt strength of current degradable foaming materials.

Method used

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  • Degradable foam material and preparation method thereof
  • Degradable foam material and preparation method thereof
  • Degradable foam material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Embodiment 1: A kind of degradable foaming material, by mass parts, comprises the following components:

[0059] 70 parts of polybutylene adipate-terephthalate;

[0060] 20 parts of polylactic acid;

[0061] 5 parts of porous inorganic particle photosensitizer;

[0062] 5 parts of AC foaming agent;

[0063] Chain extender ADR-4370S 1.5 parts;

[0064] 1.5 parts of compatibilizer glyceryl triacetate;

[0065] 1.5 parts of co-crosslinking agent 1,4-butanediol diacrylate;

[0066] Antioxidant DLTP 0.7 parts;

[0067] Antioxidant 1010 0.7 parts;

[0068] 10 parts of multi-epoxy modified starches;

[0069] Wherein the porous inorganic particle photosensitizer, the preparation method comprises:

[0070] (1) Place KH550 in an ethanol-water mixture to prepare a 2wt% ammonia silane coupling agent solution;

[0071] (2) Disperse mesoporous silica in an ammonia-based silane coupling agent solution, stir and react for 5 hours, take the precipitate, and dry it at 100°C to p...

Embodiment 2

[0078] Embodiment 2: A kind of degradable foaming material, by mass parts, comprises the following components:

[0079] 60 parts of polyadipate-butylene terephthalate;

[0080] 30 parts of polylactic acid;

[0081] 5 parts of porous inorganic particle photosensitizer;

[0082] 8 parts of AC foaming agent;

[0083] Chain extender ADR-4370S 1.5 parts;

[0084] 1.5 parts of compatibilizer glyceryl triacetate;

[0085] 2 parts of auxiliary crosslinking agent pentaerythritol triacrylate;

[0086] Antioxidant DLTP 0.7 part;

[0087] Antioxidant 1010 0.7 parts;

[0088] 10 parts of multi-epoxy modified starches;

[0089] Wherein the porous inorganic particle photosensitizer, the preparation method comprises:

[0090] (1) placing KH540 in an ethanol-water mixture to prepare a 2wt% ammonia silane coupling agent solution;

[0091] (2) Disperse the hydrotalcite in the ammonia-based silane coupling agent solution, stir and react for 6 hours, take the precipitate, and dry it at 11...

Embodiment 3

[0098] Embodiment 3: A kind of degradable foaming material, by mass parts, comprises the following components:

[0099] 50 parts of polyadipate-butylene terephthalate;

[0100] 40 parts of polylactic acid;

[0101] 5 parts of porous inorganic particle photosensitizer;

[0102] 8 parts of AC foaming agent;

[0103] Chain extender ADR-4370S 1.5 parts;

[0104] 1.5 parts of compatibilizer glyceryl triacetate;

[0105] 2 parts of auxiliary crosslinking agent pentaerythritol triacrylate;

[0106] Antioxidant DLTP 0.7 part;

[0107] Antioxidant 1010 0.7 parts;

[0108] 10 parts of thermoplastic starch masterbatch;

[0109] Wherein the porous inorganic particle photosensitizer, the preparation method comprises:

[0110] (1) placing KH792 in an ethanol-water mixture to prepare a 5wt% ammonia silane coupling agent solution;

[0111] (2) Disperse the clay in an ammonia-based silane coupling agent solution, stir and react for 6 hours, take the precipitate, and dry it at 110°C to...

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Abstract

The invention discloses a degradable foam material and a preparation method thereof, and relates to the technical field of foam materials. The degradable foam material comprises the following components by mass: 40-80 parts of poly(butylene adipate-co-terephthalate); 20-40 parts of polylactic acid; 1-5 parts of a photosensitizer; and 3-20 parts of a foaming agent. The PBAT and the PLA are adopted as matrixes, the prepared foam material is degradable, environmentally friendly and high in ductility and comprehensive mechanical property, meanwhile, the processing temperature is reduced, advanced decomposition of a chemical foaming agent is inhibited, and the cell uniformity and foaming stability of the foaming material are improved. Meanwhile, the photosensitizer is added, after irradiation, the overall melt strength of the material can be improved, then the foaming ratio and the foam structure stability in the foaming process are increased, and the temperature resistance and the mechanical property of the foaming material can be further improved.

Description

technical field [0001] The invention relates to the technical field of foaming materials, in particular to a degradable foaming material and a preparation method thereof. Background technique [0002] Since Bakelite in the United States first synthesized phenolic plastics in 1909, it has only been 110 years since plastics came out. While bringing convenience to our lives, they have also become the biggest killer of environmental pollution. The main reason is that they are one-dimensional. Random disposal of primary plastics after use, such as packaging bags made of polystyrene, polypropylene, polyvinyl chloride and other polymer compounds, agricultural mulch, disposable tableware, plastic bottles and other plastic products are discarded as solid waste after use. Due to the existence of plastics which are difficult to degrade and deal with, it will cause pollution to the ecological environment and landscape. Therefore, degradable plastics are particularly important. For exam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/04C08K13/06C08K9/06C08K7/24C08K7/26C08J9/10C08J3/28C08J3/24
CPCC08J9/103C08J9/0061C08J9/009C08J9/0095C08J3/28C08J3/246C08J2367/02C08J2467/04Y02W90/10
Inventor 杨晋涛
Owner ZHEJIANG UNIV OF TECH
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