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A kind of graphene oxide master batch and its preparation and application

A technology of graphene and masterbatch, applied in the field of graphene, can solve the problems of unfavorable industrial production, simple production process, good process stability, etc., and achieve the effect of easy industrial production, simple preparation process and large dust

Active Publication Date: 2021-12-10
FUJIAN HUACAI NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its modification process is complicated, which is not conducive to industrial production
[0005] In short, the current preparation process of graphene masterbatch is difficult to meet the characteristics of simple production process, low cost, good process stability and high interface strength at the same time.

Method used

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  • A kind of graphene oxide master batch and its preparation and application
  • A kind of graphene oxide master batch and its preparation and application
  • A kind of graphene oxide master batch and its preparation and application

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preparation example Construction

[0022] Firstly, the preparation method of the graphene oxide masterbatch according to the first aspect of the present invention will be described. A preparation method for graphene oxide master batch, comprising the following steps:

[0023] Mixing the graphene oxide aqueous solution and the aqueous polyurethane emulsion uniformly to obtain product A;

[0024] Mix the polypeptide condensing agent aqueous solution and the product A evenly, let stand, break the emulsification, and precipitate the product B;

[0025] The product B is crushed, washed, suction filtered, and dried to obtain the graphene oxide masterbatch, and the aqueous polyurethane emulsion includes anionic aliphatic aqueous polyurethane emulsion and / or anionic aromatic aqueous polyurethane emulsion.

[0026] The anionic aliphatic water-based polyurethane emulsion and / or the anionic aromatic water-based polyurethane emulsion provide anions to react with the nitrogen cations contained in the polypeptide condensing...

Embodiment 1

[0045] Embodiment 1 A kind of preparation of graphene oxide masterbatch and it is used for preparing shoe outsole and test sample

[0046] (1) 1g of graphene oxide is mixed with 0.1% graphene oxide aqueous solution and 100g of 30% anionic aromatic water-based polyurethane emulsion, and stirred at 200r / min for 30min to obtain product A, which is ready for use;

[0047] (2) Mix 0.5g of TBTU polypeptide condensing agent into 5% aqueous solution and product A, stir at 200r / min for 10min, place at 45°C for 12h, and demulsify and separate out product B;

[0048] (3) The above-mentioned product B is crushed with a powder machine, washed with distilled water and suction-filtered twice, and then the product is placed in a 60° C. oven for 24 hours to obtain a graphene oxide masterbatch with a content of 3.3%.

[0049] (4) Add graphene oxide masterbatch to TPU and injection mold at 170 DEG C to form graphene oxide addition amount is 0.06% shoe outsole and test sample.

[0050] see ima...

Embodiment 2

[0053] Embodiment 2 A kind of preparation of graphene oxide masterbatch and it is used for preparing test sample

[0054] (1) 2g graphene oxide is mixed with 5% graphene oxide aqueous solution and 40% anionic aliphatic water-based polyurethane emulsion of 100g, and stir 10min with 500r / min rotating speed, obtain product A, stand-by;

[0055] (2) Mix 1 g of TBTU polypeptide condensing agent into a 10% aqueous solution and mix it with the above-mentioned product A, stir at 500 r / min for 5 min, place it at 20° C. for 24 hours, and separate out the product B through demulsification;

[0056] (3) The above product is crushed with a powder machine, washed with distilled water and suction filtered twice, and then the product is placed in an oven at 80°C for 18 hours to obtain a graphene oxide masterbatch with a content of 5.0%;

[0057] (4) Add the graphene oxide masterbatch to TPU and injection mold it at 180°C to form a test sample bar with a graphene oxide addition of 0.3%.

[00...

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Abstract

The invention belongs to the technical field of graphene, and more specifically relates to a graphene oxide masterbatch and its preparation and application. In the technical solution of the present invention, the graphene oxide aqueous solution is directly added to the water-based polyurethane emulsion with good compatibility, thereby promoting the dispersion of the graphene oxide in the water-based polyurethane emulsion. The addition of the polypeptide condensing agent promotes the amidation and esterification reactions between the active groups such as carboxyl groups on the surface of graphene oxide and the active groups such as hydroxyl groups and amino groups on the waterborne polyurethane chain, and enhances the interfacial bonding strength between graphene oxide and waterborne polyurethane. It further promotes the good dispersion of graphene oxide in water-based polyurethane, and forms a slow demulsification process. The obtained graphene oxide masterbatch can be directly mixed with polymer resins such as polyester, polyamide, and thermoplastic polyurethane, and then melted and extruded, realizing the thermal reduction of graphene oxide, and solving the problem of difficult feeding of graphene powder and large dust , easy to agglomerate, and weak adhesion with the matrix resin.

Description

technical field [0001] The invention belongs to the technical field of graphene, and more specifically relates to a graphene oxide masterbatch and its preparation and application. Background technique [0002] In recent years, graphene has received extensive attention and research in the fields of energy storage materials, composite materials, and optoelectronic materials due to its excellent mechanical properties, electrical and thermal conductivity, etc. Among them, in the field of composite materials, graphene has the advantages of less addition and greatly improved material performance, which is obviously superior to traditional functional fillers. However, problems such as high surface tension and easy agglomeration of graphene also affect the full performance of graphene. [0003] The master batch method refers to the concentrated body prepared by mixing a large amount of fillers, additives, and a small amount of carrier resin in the process of plastic and rubber proc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08K3/04C08K5/3475C08J3/22
CPCC08J3/226C08J2375/04C08J2475/04C08K3/042C08K5/3475
Inventor 方华玉金伦托马斯·沃尔特施密特陈锦程姜兴盛游训柯希贤
Owner FUJIAN HUACAI NEW MATERIALS CO LTD
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