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Multifunctional graphene/PET composite film, and preparation method thereof

A graphene and composite membrane technology, applied in the field of membrane materials, can solve the problems of being unsuitable for actual production, complex preparation process, and high cost, and achieve the effects of improved UV protection, improved compatibility, and low cost

Active Publication Date: 2017-11-17
HANGZHOU GAOXI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent 201610111707.9 "PET-based graphene composite material, its preparation method and aerostat" firstly modify graphene oxide with ethylene glycol, then perform esterification or transesterification with PET monomer, and finally polycondensate to obtain a composite material, although through The modification method improves the compatibility of graphene and PET polymerization system, and makes graphene and PET covalently grafted, but in the process of esterification, graphene oxide will still inevitably stack, and the preparation process Complicated, the overall production cost is high, not suitable for actual production

Method used

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  • Multifunctional graphene/PET composite film, and preparation method thereof
  • Multifunctional graphene/PET composite film, and preparation method thereof
  • Multifunctional graphene/PET composite film, and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0025] (1) drying the single-layer graphene oxide dispersion by an atomization drying method to obtain graphene oxide microspheres, the atomization temperature is 130° C., the size of the graphene oxide sheet is 1 to 3 microns, and the carbon-to-oxygen ratio is 2.5;

[0026] (2) Fully mix and stir 100 parts by mass of terephthalic acid, 53 parts by mass of ethylene glycol, and 0.02 parts by mass of sodium acetate, and carry out esterification reaction at 250°C until anhydrous is produced;

[0027] (3) Add 0.117 parts by mass of pleated spherical graphene oxide obtained in step (1) and 0.018 parts by mass of ethylene glycol antimony to the esterified product obtained in step (2), keep stirring for 2 hours, and the stirring speed is 160 rpm , then heated up to 285°C and vacuumized, the reaction was carried out until the system no longer exothermic, and the graphene / PET nanocomposite material was obtained by water-cooling and pelletizing.

[0028] (4) 100 parts by mass of the gra...

Embodiment 2

[0031] (1) drying the single-layer graphene oxide dispersion by an atomization drying method to obtain graphene oxide microspheres, the atomization temperature is 130°C, the size of the graphene oxide sheet is 10-15 microns, and the carbon-oxygen ratio is 2.5;

[0032] (2) Fully mix and stir 100 parts by mass of terephthalic acid, 53 parts by mass of ethylene glycol, and 0.02 parts by mass of sodium acetate, and carry out esterification reaction at 250°C until anhydrous is generated;

[0033](3) Add 0.117 parts by mass of pleated spherical graphene oxide obtained in step (1) and 0.018 parts by mass of ethylene glycol antimony to the esterified product obtained in step (2), keep stirring for 2 hours, and the stirring speed is 160 rpm , then heated up to 285°C and vacuumized, the reaction was carried out until the system no longer exothermic, and the graphene / PET nanocomposite material was obtained by water-cooling and pelletizing.

[0034] (4) 100 parts by mass of the graphene / ...

Embodiment 3

[0037] (1) drying the single-layer graphene oxide dispersion by an atomization drying method to obtain graphene oxide microspheres, the atomization temperature is 130°C, the size of the graphene oxide sheet is 40-45 microns, and the carbon-oxygen ratio is 2.5;

[0038] (2) Fully mix and stir 100 parts by mass of terephthalic acid, 53 parts by mass of ethylene glycol, and 0.02 parts by mass of sodium acetate, and carry out esterification reaction at 250°C until anhydrous is generated;

[0039] (3) Add 0.117 parts by weight of pleated spherical graphene oxide obtained in step (1) and 0.018 parts by weight of ethylene glycol antimony to the esterified product obtained in step (2), keep stirring for 2 hours, and the stirring speed is 160 rpm , then heated up to 285°C and vacuumized, the reaction was carried out until the system no longer exothermic, and the graphene / PET nanocomposite material was obtained by water-cooling and pelletizing.

[0040] (4) 100 parts by mass of the grap...

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Abstract

The invention discloses a multifunctional graphene / PET composite film, and a preparation method thereof. The multifunctional graphene / PET composite film is prepared via melting film casting of a graphene / PET composite material; and the graphene / PET composite material is obtained via adding plicated ball shaped oxidized graphene and a catalyst into PET precursor and in-situ polycondensation. The preparation method is capable of avoiding stacking of oxidized graphane in esterification, reducing cost greatly, and increasing production efficiency. The obtained graphene is excellent in dispersibility in polymer matrix; adding of a small amount of graphene, the ultraviolet resistance, the static resistance, the oxygen isolation performance, and the steam isolation performance of the obtained multifunctional graphene / PET composite film are improved obviously. The preparation method is simple and effective; the obtained multifunctional graphene / PET composite film is excellent in performance, and can be used for preparing ultraviolet resistant film, food package, and protective coiled materials.

Description

technical field [0001] The invention belongs to the field of membrane materials, in particular to a multifunctional graphene / PET composite membrane and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (PET) film is a kind of packaging film with comprehensive performance. It has good transparency and luster; it has good air tightness and fragrance retention; it has moderate moisture resistance, and its moisture permeability decreases at low temperatures. PET film has excellent mechanical properties, its strength and toughness are the best among all thermoplastics, and its tensile strength and impact strength are much higher than ordinary films; it has good stiffness and stable size, and is suitable for secondary processing such as printing and paper bags. . PET film also has excellent heat resistance, cold resistance and good chemical resistance and oil resistance. But for many special application fields, such as UV protection film, hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K3/04C08J5/18C08G63/183
CPCC08G63/183C08J5/18C08J2367/02C08K3/04C08K2201/003C08L2201/04C08L2201/08C08L2201/14C08L2203/16C08L67/02
Inventor 高超陈琛韩燚申瑜
Owner HANGZHOU GAOXI TECH CO LTD
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