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Graphene/thermoplastic polyurethane composite and preparation method thereof

A thermoplastic polyurethane and composite material technology, which is applied in the field of polymer composite film preparation, can solve problems such as danger and adverse effects on polymer physical properties, and achieve the effects of preventing agglomeration, scientific and reasonable preparation methods, and simple procedures

Inactive Publication Date: 2015-07-29
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the preparation of reduced graphene involves the use of highly toxic reducing agents, not only may it bring potential dangers in the laboratory and large-scale industrial production, but the toxic reagents remaining in the product will also have adverse effects on the physical properties of the polymer. influences

Method used

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  • Graphene/thermoplastic polyurethane composite and preparation method thereof
  • Graphene/thermoplastic polyurethane composite and preparation method thereof
  • Graphene/thermoplastic polyurethane composite and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] 1) Add 150mg of GO to 20ml of DMF solution to form a stable graphite oxide DMF dispersion, and ultrasonically disperse it at 100W for 2h. After it is stable, pour it into the TPU solution pre-swelled in DMF, and stir at room temperature for 2~5h. Ultrasonic disperse at 100W for 1~2h to remove the air in the pasty liquid and let it stand for 1~2h;

[0031] 2) Film coating: place the glass plate with a clean surface on the film coating machine to coat the film, control the film thickness to 0.06~0.08mm, and obtain the graphene oxide / thermoplastic polyurethane composite material after the solvent is fully volatilized.

[0032] 3) Preparation of in-situ thermally reduced graphene / polyurethane composite material: the obtained graphene oxide / thermoplastic polyurethane composite material was baked in an oven at 200 °C for 2 h, and the composite material changed from dark brown to gray-black, and the original Thermally reduced graphene / polyurethane composite (marked as 1#TPU). ...

Embodiment 2

[0034] 1) Add 300mg of GO to 20ml of DMF solution to form a stable graphite oxide DMF dispersion, and disperse it ultrasonically at 100W for 2h. After it is stable, pour it into the TPU solution pre-swelled in DMF, and stir at room temperature for 2~5h. Ultrasonic disperse at 100W for 1~2h to remove the air in the pasty liquid and let it stand for 1~2h;

[0035] 2) Film coating: place the glass plate with a clean surface on the film coating machine to coat the film, control the film thickness to 0.06~0.08mm, and obtain the graphene oxide / thermoplastic polyurethane composite material after the solvent is fully volatilized.

[0036] 3) Preparation of in-situ thermally reduced graphene / polyurethane composite material: the obtained graphene oxide / thermoplastic polyurethane composite material was baked in an oven at 200 °C for 2 h, and the composite material changed from dark brown to gray-black, and the original Thermally reduced graphene / polyurethane composite (marked as 2#TPU). ...

Embodiment 3

[0038] 1) Add 450mg of GO to 20ml of DMF solution to form a stable graphite oxide DMF dispersion, and ultrasonically disperse it at 100W for 2h. After it is stable, pour into the TPU solution pre-swelled in DMF, and stir at room temperature for 2~5h. Ultrasonic disperse at 100W for 1~2h to remove the air in the pasty liquid and let it stand for 1~2h;

[0039] 2) Film coating: place the glass plate with a clean surface on the film coating machine to coat the film, control the film thickness to 0.06~0.08mm, and obtain the graphene oxide / thermoplastic polyurethane composite material after the solvent is fully volatilized.

[0040] 3) Preparation of in-situ thermally reduced graphene / polyurethane composite material: the obtained graphene oxide / thermoplastic polyurethane composite material was baked in an oven at 200 °C for 2 h, and the composite material changed from dark brown to gray-black, and the original Thermally reduced graphene / polyurethane composite (marked as 3#TPU).

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Abstract

The invention discloses a graphene / thermoplastic polyurethane composite and a preparation method and application thereof. The improved Hummers method is adopted to prepare graphene oxide which is dispersed in DMF to be subjected to ultrasonic treatment, TPU (Thermoplastic polyurethanes) swollen in DMF is poured in, and the solution coating film-forming process is adopted to prepare a GO (Graphene Oxide) / TPU composite film which is subjected to in-situ thermal recovery treatment for 2 h at 200 DEG C to prepare the graphene / thermoplastic polyurethane composite. The prepared graphene / thermoplastic polyurethane composite has the excellent electrical property, is uniform in filler dispersion, can be used for preparing TPU medical cushions, TPU biogas storage bags, TPU wading products and TPU water and oil storage bags, and can also be used in the field demanding relatively much on the obstructing and antistatic performance of materials.

Description

technical field [0001] The invention belongs to the technical field of polymer composite film preparation, and in particular relates to a graphene / thermoplastic polyurethane composite material and its preparation method and application. Background technique [0002] Thermoplastic polyurethane elastomer (TPU) is composed of diisocyanate, polyol and short chain diol, which can be plasticized by heating and can be dissolved by solvent (AB) n type block linear polymers. Polyurethane is a polymer material with a wide range of uses, mainly used in automobiles, construction, paving materials, mining, mining, electronics and aerospace. In recent years, as one of the important chemical reinforcement materials, polyurethane grouting material has developed rapidly, and people have turned their attention to TPU water storage bags, TPU military oil storage bags, TPU wading products, etc. [0003] Using TPU as a military oil storage bag is an ideal choice to replace hard oil tanks in th...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L75/04C08K9/02C08K3/04
Inventor 郑玉婴欧忠星林锦贤
Owner FUZHOU UNIV
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