Polymer functional graphene and preparation method and application thereof

A polymer, graphene technology, applied in graphene, chemical instruments and methods, carbon compounds, etc., can solve problems such as poor stability, limited stabilization effect, and affected performance, and achieve excellent dispersion stability and generation methods. Simple and convenient, the effect of increasing dispersion

Inactive Publication Date: 2018-03-06
江西福安路润滑材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

In this patented technology, there was developed an improved type called polynucleotides (PNAs). These PNAs have specific functions such as adding charges at certain positions along their backbone structure for better dispersivity into different types of liquids like water. They also allow for easier formation of molecules between these charged parts during synthesis process. By combining various techniques together they could create materials with superior properties.

Problems solved by technology

This patents discuss how improving the dispersibility and stability of graphenes in various types of liquids such as water, alcohols, acetone, ethanol, methyl chloride, dimmers, poly(dimyristo)-grafted carbon), polysiloxanes, hydroxypropyl cellulose, carboxymethylethane crosslinkings, and many others. These modifications aim to enhance their performance and functionality without compromising them themselves.

Method used

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  • Polymer functional graphene and preparation method and application thereof
  • Polymer functional graphene and preparation method and application thereof
  • Polymer functional graphene and preparation method and application thereof

Examples

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preparation example Construction

[0045] see figure 2 As shown, in some more specific embodiments, the preparation method includes:

[0046] Reaction of graphene with succinic anhydride and / or succinic acid containing at least one benzene ring in the molecular chain and / or amination of graphene first, and then reacting with succinic anhydride and / or succinic acid containing at least one benzene ring in the molecular chain , thereby obtaining the polymer functionalized graphene.

[0047] Alternatively, succinimide and / or succinamide and / or succinic carboxylate containing amine and / or hydroxyl reactive groups containing at least one benzene ring in the molecular chain are directly reacted with graphene to obtain the Polymer functionalized graphene.

[0048] The application of the polymer functionalized graphene is also provided in the embodiment of one aspect of the present invention.

[0049] A typical use of the polymer-functionalized graphene of the present invention is as an additive in lubricating oil c...

Embodiment 1

[0053] Preparation of Polyisobutylene Succinimide Functionalized Graphene

[0054] The polyisobutylene succinimide is prepared according to Example 3 in US20080103075A1, wherein the aromatic amine used is p-aminodiphenylamine, and the polymer is linked with an amine active functional group after the reaction.

[0055] Put 0.05g of graphene oxide into 150ml of THF / DMF (THF:DMF=5:1) mixed solvent, and ultrasonically disperse for 12h to disperse the graphene oxide in the solvent. Add 1.25 g of the self-made polyisobutylene succinimide, stir and disperse at room temperature for 1 h, then gradually raise the temperature to 90° C. while stirring, and react for 24 h. Then slowly add 25g of base oil (150N), and stir at 60°C for 4h. The reaction is stopped, the precipitated graphene oxide is removed by centrifugation, and the solvent is removed from the centrifugal liquid under reduced pressure to obtain graphene functionalized with polyisobutylene succinimide.

[0056] Take part of ...

Embodiment 2

[0061] Preparation of maleic anhydride-functionalized graphene grafted with ethylene-propylene copolymer

[0062] Ethylene-propylene copolymer grafting maleic anhydride is a commercially available product (model g-18, maleic anhydride grafting rate 1.18%, Nanjing Plastic Tai Polymer Technology Co., Ltd.), reacted with p-aminodiphenylamine and alcohol amine , After the reaction, the polymer is connected with a hydroxyl active functional group.

[0063] Put 0.05g graphene into 150ml xylene / DMF (xylene:DMF=5:1) mixed solvent, and ultrasonically disperse for 12h to fully disperse graphene oxide. Add 1.25 g of the self-made ethylene-propylene copolymer containing hydroxyl active functional groups, stir and disperse at room temperature for 1 h, then gradually raise the temperature to 90°C while stirring, and react for 24 h. Then slowly add 25g of base oil (150N), and stir at 80°C for 4h. The reaction is stopped, the precipitated graphene oxide is removed by centrifugation, and the...

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Abstract

The invention discloses polymer functional graphene and a preparation method and application thereof. Graphene is connected with a polymer through the combination of at least one of imide, amide, ester groups and amidogen, wherein the polymer is a polymer at least containing one benzene ring and with the molecular weight of 200-500,000 and interacts with the graphene through covalent bonds, hydrogen bonds and/or pi-pi conjugation. The polymer functional graphene is excellent in dispersion property in non-polar solvents and excellent in dispersion stability, and cannot precipitate after long-time storage for multiple months; according to the adopted preparation method, the polymer with amidogen, hydroxyl and carboxyl reacts with epoxy, hydroxyl and the like on the graphene and then is subjected to covalent grafting on the surface of the graphene, and the grafting rate of the polymer reaches 30% or above. In addition, the obtained polymer functional graphene can be widely applied to lubricating oil, plastic, rubber, paints, adhesives, fibers and other fields, and has potential application value.

Description

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Claims

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Application Information

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Owner 江西福安路润滑材料有限公司
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