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Foaming-grade biodegradable polyester material and preparation method thereof

A biodegradable polyester and raw material technology, applied in the field of polymer materials, can solve the problems of limited application and high dosage of organic peroxide, achieve low processing costs, meet the needs of large-scale production, and expand the application field

Active Publication Date: 2021-05-14
SHANTOU SAMMA PLASTIC IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology has the problem that the amount of organic peroxide is high, so that the long-chain branched polyester material contains a large amount of irritating volatiles formed by the decomposition of organic peroxide, which limits the use of long-chain branched polyester materials in food And the application in the field of medical contact products

Method used

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  • Foaming-grade biodegradable polyester material and preparation method thereof
  • Foaming-grade biodegradable polyester material and preparation method thereof
  • Foaming-grade biodegradable polyester material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] In this embodiment, the preparation method of this foam grade biodegradable polyester material includes the following steps in sequence:

[0047] (1) By weight, the following raw materials are equipped: 97.75% of biodegradable polyester (polybutylene succinate), 0.15% of organic peroxide (tert-butyl peroxy-2-ethylhexanoate) , 0.80% silane coupling agent (vinyl triethoxysilane), 1.00% silica particles (nano-scale silica particles), 0.30% lubricant (glycerol monostearate);

[0048] (2) Dry the biodegradable polyester at 90°C for 90 minutes so that the moisture content of the biodegradable polyester is lower than 200ppm, and cool to 25°C;

[0049] (3) Add organic peroxide and 0.40% silane coupling agent to biodegradable polyester, and mix uniformly to obtain mixed material;

[0050] (4) Dry the silica particles at 110°C for 120 minutes to make the moisture content of the silica particles lower than 200ppm, and cool to 30°C;

[0051] (5) Spray the remaining 0.4% silane co...

Embodiment 2

[0059] In this embodiment, the preparation method of this foam grade biodegradable polyester material includes the following steps in sequence:

[0060] (1) By weight, the following raw materials are equipped: 97.80% (polylactic acid) of biodegradable polyester, 0.20% (tert-butyl peroxybenzoic acid ester) of organic peroxide, 0.50% of silane coupling agent (γ- Methacryloxypropyl trimethoxysilane), silica particles 0.50% (nano-scale silica particles), lubricant 1.00% (ethylene bis-12-hydroxystearamide);

[0061] (2) Dry the biodegradable polyester at 100°C for 120 minutes to make the moisture content of the biodegradable polyester lower than 200ppm, and cool to 20°C;

[0062] (3) Add organic peroxide and 0.30% silane coupling agent to biodegradable polyester, and mix uniformly to obtain mixed material;

[0063] (4) Dry the silica particles at 120°C for 100 minutes to make the moisture content of the silica particles lower than 200ppm, and cool to 20°C;

[0064] (5) Spray the ...

Embodiment 3

[0072] In this embodiment, the preparation method of this foam grade biodegradable polyester material includes the following steps in sequence:

[0073] (1) By weight, the following raw materials are equipped: 98.10% of biodegradable polyester (poly(3-hydroxybutyrate-co-3-hydroxyvalerate)), 0.30% of organic peroxide (tert-amyl peroxide) Oxygen-2-ethylhexyl carbonate), silane coupling agent 0.60% (γ-methacryloxypropyltrimethoxysilane), silica particles 0.50% (nano-scale silica particles), lubrication Agent 0.50% (pentaerythritol tetrastearate);

[0074] (2) Dry the biodegradable polyester at 95°C for 80 minutes so that the moisture content of the biodegradable polyester is lower than 200ppm, and cool to 25°C;

[0075] (3) Add organic peroxide and 0.2% silane coupling agent to biodegradable polyester, and mix uniformly to obtain mixed material;

[0076] (4) Dry the silica particles at 100°C for 100 minutes to make the moisture content of the silica particles lower than 200ppm,...

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Abstract

The invention discloses a foaming-grade biodegradable polyester material, and the material is characterized by being prepared from the following raw materials by weight: 88.00-99.87% of biodegradable polyester; 0.01-1.00% of an organic peroxide; 0.01-3.00% of a silane coupling agent; 0.10-5.00% of silicon dioxide particles; and 0.01-3.00% of a lubricant. The invention also provides a preparation method of the foaming-grade biodegradable polyester material. The foaming-grade biodegradable polyester material has high melt strength and excellent foamability, and can meet the process requirements of continuous extrusion foaming, kettle pressure foaming, mold pressing foaming and injection molding foaming.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a foaming grade biodegradable polyester material and a preparation method thereof. Background technique [0002] In recent years, the problem of "white pollution" caused by traditional plastics has become increasingly serious, causing serious damage to the ecological environment, especially the marine ecosystem, and seriously endangering the safety and health of marine organisms and even human beings. Among them, non-degradable foam materials are one of the most important sources of pollution causing "white pollution". This is because the foam material is light and difficult to recycle, so that the recycling cost is high, and eventually most of the foam products are discarded, landfilled or incinerated after use. It can be seen that in the field of foam products, the development of biodegradable foam materials is one of the effective means to solve "white pollution". ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/04C08K9/06C08K3/36C08J9/12
CPCC08J9/122C08J9/009C08J2203/06C08J2367/02C08J2367/04C08J2467/04
Inventor 李鹏张晓智詹卡斯
Owner SHANTOU SAMMA PLASTIC IND CO LTD
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