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High-melt-strength biodegradable polyester material and preparation method thereof

A biodegradable polyester, high melt strength technology, applied in biological packaging, sustainable manufacturing/processing, sustainable packaging, etc. And other issues

Active Publication Date: 2021-06-08
汕头市三马塑胶制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the amount of organic peroxide is relatively large. On the one hand, the organic peroxide reacts violently, which can easily lead to a large amount of gel in polyester, resulting in poor processing fluidity; on the other hand, the decomposition of organic peroxide produces a lot of stimulation. Sexual volatiles and residues in long-chain branched polyesters, which limit the application of long-chain branched polyesters in product areas in contact with food

Method used

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  • High-melt-strength biodegradable polyester material and preparation method thereof
  • High-melt-strength biodegradable polyester material and preparation method thereof
  • High-melt-strength biodegradable polyester material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] In this embodiment, the preparation method of such a high melt strength bio-derived polyester material sequentially includes the following steps:

[0047] (1) According to the weight, it is equipped with the following raw materials: biodegradable polyester 98.05% (polybut dikalate), organic peroxide 0.15% (tert-butyl peroxide-2-ethylhexate) 0.80% (vinyl triethoxysilane), silica particles (nano silica particles);

[0048] (2) The biodegradable polyester was dried at 90 ° C for 90 min, so that the moisture content of the biodegradable polyester was less than 200 ppm and cooled to 25 ° C;

[0049] (3) The organic peroxide and 0.40% silane coupling agent were added to the biodegradable polyester and mixed uniform to obtain a mixture;

[0050] (4) The silica particles were dried at 110 ° C for 120 min, so that the moisture content of the silica particles was less than 200 ppm, and cooled to 30 ° C;

[0051] (5) Spray the remaining 0.4% silane coupling agent on the surface of the...

Embodiment 2

[0058] In this embodiment, the preparation method of such a high melt strength bio-derived polyester material sequentially includes the following steps:

[0059] (1) According to the weight, it is equipped with the following raw materials: biodegradable polyester 98.80% (polylactic acid), organic peroxide 0.20% (tert-butyl peroxide), 0.50% silane coupling agent (γ- Methyl acryloyloxypropyl trimethoxysilane), 0.50% of silica particles (nano-stage silica particles);

[0060] (2) The biodegradable polyester was dried at 100 ° C for 120 min, so that the moisture content of the biodegradable polyester was less than 200 ppm and cooled to 20 ° C;

[0061] (3) The organic peroxide and 0.30% silane coupling agent are added to the biodegradable polyester and mix well to obtain a mixture;

[0062] (4) The silica particles were dried at 120 ° C for 100 min, so that the moisture content of the silica particles was less than 200 ppm, and cooled to 20 ° C;

[0063] (5) Spray the remaining 0.2% s...

Embodiment 3

[0070] In this embodiment, the preparation method of such a high melt strength bio-derived polyester material sequentially includes the following steps:

[0071] (1) According to the weight, it is equipped with the following raw materials: biodegradable polyester 98.60% (poly (3-hydroxybutyrate-CO-3-hydroxyvalectate), organic peroxide 0.30% (tertomylene) Oxidation-2-ethylhexyl carbonate), silane coupling agent 0.60% (gamma-methylproxyloxylpropyl trimethoxysilane), silica particles 0.50% (nano-grade silica particles);

[0072] (2) The biodegradable polyester was dried at 95 ° C for 80 min, so that the moisture content of the biodegradable polyester was less than 200 ppm, and cooled to 25 ° C;

[0073] (3) The organic peroxide and 0.2% silane coupling agent were added to the biodegradable polyester and mixed uniform to obtain a mixture;

[0074] (4) The silica particles were dried at 100 ° C for 100 min, so that the moisture content of the silica particles was less than 200 ppm and ...

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Abstract

The invention discloses a high-melt-strength biodegradable polyester material which is characterized by being prepared from the following raw materials in percentage by weight: 91.00-99.88% of biodegradable polyester; 0.01-1.00% of an organic peroxide; 0.01-3.00% of a silane coupling agent; and 0.10-5.00% of silicon dioxide particles. The invention also provides a preparation method of the high-melt-strength biodegradable polyester material. The high-melt-strength biodegradable polyester material has high melt strength, is green and environment-friendly, and can completely meet the requirements of processing and forming modes related to melt stretching.

Description

Technical field [0001] The present invention relates to the field of polymer material, and more particularly to a high melt strength biodegradable polyester material and a preparation method thereof. Background technique [0002] In recent years, "white pollution" caused by traditional plastics has become increasingly severe and has become a global environmental problem. At present, "limited mold" has become a global consensus, and many countries and regions have been introduced to the corresponding "limited mold" and "ban" policies, including China, South Korea, Thailand, Germany, France and other Member States of the EU. In this context, biodegradable green materials have more and more attention from all companies in society. [0003] At present, biodegradable materials mainly include polylactic acid (PLA), butadic acid butneshanol esters (PBS), polybutic acid hyetaxetrate (PBSA), polybutylene terephthalate dikarcrate. Alkoxyl ester (PBST), polyethylene terephthalate (PBAT), po...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L67/04C08K5/14C08K9/06C08K3/36C08K5/5425C08K13/06
CPCC08K5/14C08K9/06C08K3/36C08K5/5425C08K13/06C08L67/02C08L2201/06C08K2201/011C08L2205/02C08L67/04Y02W90/10
Inventor 李鹏张晓智詹卡斯
Owner 汕头市三马塑胶制品有限公司
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