Multifunctional additive containing graphene nanomaterial and preparation method of multifunctional additive

A technology of multi-functional additives and nanomaterials, applied in chemical instruments and methods, anti-corrosion coatings, carbon compounds, etc., can solve the problems of graphene’s electrical conductivity and anti-corrosion performance, easy agglomeration of coatings, difficult to disperse uniformly, etc. Dispersibility and stability, improved anti-corrosion performance, wide application effect

Active Publication Date: 2021-08-20
广东源稀新材料科技有限公司
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Problems solved by technology

[0003] Graphene with a two-dimensional layered structure has a certain shielding effect on corrosive substances and is an ideal performance-enhancing filler for anti-corrosion coatings. However, due to the small distance between graphene sheets, it is difficult for polymers to enter Between the graphene sheets, it is easy to agglomerate in the coating and it is difficult to disperse evenly, so it is difficult to exert its anti-corrosion performance when graphene is directly a

Method used

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  • Multifunctional additive containing graphene nanomaterial and preparation method of multifunctional additive
  • Multifunctional additive containing graphene nanomaterial and preparation method of multifunctional additive
  • Multifunctional additive containing graphene nanomaterial and preparation method of multifunctional additive

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[0031] The present invention provides a method of preparing a multifunctional auxiliaries containing graphene nanomaterial, including the following steps:

[0032] 1) In the mixed solution of aminomethylol and water, the sodium hydrogencarbonate is added to 5 ° C, and the dioxide solution of benzyl chloroformate is added at 0 ° C to protect the amino group.

[0033] 2) The protected aminomethylbenzene is dissolved in the carbon sulfide, depending on the ETARD reaction oxidized methyl group is an aldehyde group, resulting in an intermediate product 1;

[0034]

[0035] 3) First use the improved Hummers method to obtain graphene oxide, add oxide graphene and solvent DMF in the reaction flask, and make it dispersed uniform, then add 1- (3-dimethylaminopropyl) to the reaction bottle. The DMF solution of 3-ethyl carbon diimide and N-hydroxy succinimide was activated, and then the polyethylene glycol diamine was reacted at 80-100 ° C for 24 h for amidate;

[0036] 4) Add the obtained ...

Example Embodiment

[0047] Example 1: According to the above-described preparation process, the polyethylene glycol diamine molecular weight is 400 g / mol, and the modified graphene and the auxiliary dispersant are obtained, and the modified graphene 15g, the auxiliary dispersant 10g is dispersed in 100 g of water, that is, Multi-functional aid containing graphene nanomaterials.

Example Embodiment

[0048] Example 2: According to the above preparation process, the polyethylene glycol diamine molecular weight is 1000 g / mol, and the modified graphene and the auxiliary dispersant are obtained, and the modified graphene 10g, the auxiliary dispersant 8g is dispersed in 100 gdmf, that is, Multi-functional aid containing graphene nanomaterials.

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Abstract

The invention relates to a multifunctional additive containing a graphene nanomaterial and a preparation method of the multifunctional additive. The preparation method comprises the following steps of: exposing more active sites on the surface of graphene through an improved Hummers method; introducing a PEG chain, imine and anilino to the surface of the graphene structure through molecular design to prepare functional graphene oxide; and using an anionic-nonionic dispersant with a specific structure to obtain the multifunctional additive containing the graphene nanomaterial. According to the multifunctional additive containing the graphene nanomaterial and the preparation method of the multifunctional additive of the invention, the dispersing agent with a specific structure is used for enhancing the dispersity of the modified graphene in various solvent systems, the multi-arm dispersing agent has abundant anchoring groups, can easily enter between graphene sheet layers, can generate hydrogen-bond interaction, adsorption and the like with active groups on the surface of the graphene, is firm in combination, is not easy to settle in the solvent systems, and is good in stability; a dispersion medium can be a common organic solvent or water, so that the application range of the multifunctional additive is wide, and the corrosion resistance of a coating can be effectively improved.

Description

technical field [0001] The invention relates to the field of functional nanomaterials, in particular to a multifunctional additive containing graphene nanomaterials and a preparation method thereof. Background technique [0002] Nanomaterials have five unique effects: volume effect, surface effect, quantum size effect, quantum tunneling effect, and dielectric confinement effect. They have excellent properties in optics, electricity, and mechanics, so they have attracted the attention of scientific researchers. Graphene (Gr) is a sp 2 The hybrid special nanomaterial with honeycomb crystal structure is currently the thinnest two-dimensional material known in the world. Due to its special structure, graphene has excellent physical and chemical properties. It is used in composite materials, capacitors, sensors, Coatings and other fields have a wide range of applications. [0003] Graphene with a two-dimensional layered structure has a certain shielding effect on corrosive subs...

Claims

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Application Information

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IPC IPC(8): C01B32/198C01B32/194C09D5/08
CPCC01B32/198C01B32/194C09D5/08
Inventor 陶晓辉周慧姜晔
Owner 广东源稀新材料科技有限公司
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