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Graphene modified degradable material and application thereof

A technology for modifying and degrading materials with graphene, which is applied in the field of chemical materials, and can solve problems such as difficult dispersion, difficult polymer material compounding, and weak interaction

Active Publication Date: 2020-11-17
PUJING CHEM IND SHA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is a problem in the application process of compounding graphene and polymer materials, that is, in the dispersion process of graphene, since the complete structure of graphene is composed of benzene six-membered rings containing stable bonds, chemically stable The surface is in an inert state, and the interaction with other media is weak, and there is a strong intermolecular force between the graphene sheets, which makes the sheets easy to stack together and difficult to disperse and dissolve. In a solvent, it is more difficult to evenly compound with polymer materials

Method used

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  • Graphene modified degradable material and application thereof
  • Graphene modified degradable material and application thereof
  • Graphene modified degradable material and application thereof

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Embodiment Construction

[0040]After extensive and in-depth research, the inventors have effectively improved the thermal stability of the material system and increased its heat-resistant temperature by introducing functionalized graphene; and in order to improve the dispersion of graphene in degradable resins, choose to use glycolic acid polymerization As the intermediate carrier of graphene, the surface of graphene can be modified first to obtain functionalized graphene, and then the functionalized graphene can be uniformly pre-dispersed in glycolic acid by chemical modification or physical blending. Among polymers, graphene-modified glycolic acid polymers are obtained. Due to the relatively good compatibility between glycolic acid polymers and other degradable resins (with hydrolyzable functional groups), it is compatible with functionalized The polymer continuous phase in the graphene-phase composite glycolic acid polymer (at this time as an intermediate carrier) can play the role of "compatibilize...

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Abstract

The invention discloses a graphene modified degradable material and application thereof. Matrix resin in raw material components of the degradable material comprises degradable resin and a graphene modified glycollic acid polymer. The graphene-modified glycollic acid polymer is obtained by carrying out a grafting reaction on functionalized graphene and a glycollic acid polymer, or is obtained by physically blending the functionalized graphene and the glycollic acid polymer.

Description

technical field [0001] The invention belongs to the technical field of chemical materials, and relates to a graphene-modified degradable material and an application thereof. Background technique [0002] At present, in terms of drilling and production of oil and gas fields, the horizontal well staged fracturing technology is an important means to improve the main reservoir of tight oil and gas reservoirs at home and abroad and effectively increase the daily production of a single well. However, the technique of pumping downhole tools (such as bridge plugs, packers, or plugs) for staged fracturing has problems such as long plug drilling period in the later stage of fracturing, high construction costs, and downhole accidents. Cuttings and working fluids are easy to pollute underground reservoirs. Therefore, downhole tools made of degradable materials have become the first choice for fracturing construction. There are also some advantages to using degradable polymer materials t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C08L87/00C08L67/04C08K9/04C08K9/06C08K3/04
CPCC08G83/001C08L87/005C08K9/04C08K9/06C08K3/042C08L2201/06C08L67/04
Inventor 何佳欢孙朝阳
Owner PUJING CHEM IND SHA
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