Aliphatic-aromatic copolyester and preparation method thereof

An aromatic and aliphatic technology, applied in the field of aliphatic-aromatic copolyester and its preparation, can solve problems that cannot meet real life, achieve excellent melt strength, tear resistance and impact resistance, and improve aging resistance Performance, the effect of improving heat resistance

Active Publication Date: 2013-06-12
李宗华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Although these aliphatic-aromatic copolyesters disclosed above have certain use value in practice, they still cannot meet the needs of real life, and further improvement is needed to meet the requirements of real life for material performance.

Method used

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  • Aliphatic-aromatic copolyester and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Add 100 g of nano titanium dioxide to 0.1 g of isopropyl tris(dioctyl phosphate acyloxy) titanate, heat to 30° C., stir at high speed for 1 minute, and ultrasonically treat for 3 minutes to prepare surface-treated nano titanium dioxide.

[0049] 146g 1,6-adipic acid, 166g terephthalic acid, 270g 1,4-butanediol, placed in a 1000ml flask, add 0.03g antimony trioxide catalyst, 0.05g tetraisopropyl titanate, and add it to the surface The treated nano-particle titanium dioxide 0.003g and nano-alumina 0.001g are esterified at 130°C to 240°C. After the esterification rate reaches 95% under normal pressure, the polycondensation reaction is carried out, and the polycondensation reaction is carried out at 200-280°C under vacuum. , Discharge after reaching a certain viscosity.

[0050] figure 1 This is the 1H NMR spectrum of the product of Example 1.

Embodiment 2

[0052] Add 100g of nano silica, add 0.5g of γ-glycidoxypropyltrimethoxysilane, 9g of phosphate acyloxyisooctanol aluminate, heat to 80°C, stir at high speed for 15 minutes to prepare a surface-treated Nano silica.

[0053] 182g 1,6-adipyl chloride, 19.4g dimethyl terephthalate, 100g ethylene glycol, 20g polyethylene glycol with a molecular weight of 400, placed in a 1000ml flask, add 0.1g of antimony trioxide catalyst, add 16g of surface-treated nano-particle silica, undergo esterification reaction at 130°C to 240°C, negative pressure, absolute pressure of 70kPa, and esterification rate of 95%, then proceed to polycondensation reaction. The polycondensation reaction is 200~ It is carried out at 280°C, and the material is discharged after reaching a certain viscosity.

Embodiment 3

[0055] Add 100g of nano hydrotalcite, add 0.5g of γ-glycidyloxypropyltrimethoxysilane, 1g of distearoyloxyisopropyl aluminate, heat to 80℃, stir at low speed for 40 minutes to prepare surface treated nano Hydrotalcite.

[0056] 73g 1,6-dimethyl adipate, 166g terephthalic acid, 360g 1,4-butanediol, placed in a 1000ml flask, add 0.02g of the catalyst germanium oxide, carry out the esterification reaction at 130℃ to 260℃, The absolute pressure is 150KPa normal pressure, and the esterification rate reaches 95%, 2.5g of surface-treated nano-particle hydrotalcite is added, and the polycondensation reaction is carried out. The polycondensation reaction is carried out at 200-280°C under vacuum to reach a certain viscosity After discharging.

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Abstract

The invention relates to a completely biodegradable and highly molecular-weight nanoparticle-containing aliphatic-aromatic copolyester and a preparation method thereof. The aliphatic-aromatic copolyester is prepared from the following poly-monomers: (A) alphatic binary acid or one or more of compounds of ester, acid anhydride and acyl halide; (B) aromatic binary acid, cyclo-alkane binary acid or one or more of ester, acid anhydride and acyl halide compounds; (C) dihydric alcohol, alkamine, aminothiol or one or more of derivatives with epoxy group and azacyclo; and (D) nanoparticles subjected to coupling agent surface treatment. The aliphatic-aromatic copolyester has excellent melt strength and tear-resistant anti-impact properties, the heat-resistant property and the aging-resistant property can be improved. Through addition of nanoparticles, the mechanical performance can be enhanced, the crystallization speed and crystallinity are quickened, and the heat-resistant property and the aging-resistant property are improved.

Description

Technical field [0001] The invention relates to an aliphatic-aromatic copolyester and a preparation method thereof, in particular to a completely biodegradable, high molecular weight aliphatic-aromatic copolyester containing nano particles and a preparation method thereof. Background technique [0002] "White pollution" is a worldwide issue. Today, when the environment is deteriorating, how to solve the contradiction between the use of plastic products and environmental destruction (such as the pollution of waste plastic films and plastic bags) becomes more and more important. Therefore, the research and application of various degradable plastics have received extensive attention, and the development and application of fully biodegradable plastic products has also become a research hotspot in the world. [0003] In order to solve the pollution problem after the waste of chemical plastic films, people have been looking for alternatives that can effectively replace them. Studies ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/183C08G63/672C08G63/199C08G63/685C08K9/04C08K9/06C08K3/22C08K3/36C08K3/26C08K3/34
Inventor 李宗华卢伟
Owner 李宗华
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