Ultrasonic manufacturerDue to the excellent properties of graphene, researchers are considering adding it as a reinforcement to the matrix material to improve its performance. However, the large specific surface area of graphene often causes it to aggregate together, which not only reduces its adsorption capacity but also affects the excellent performance of graphene itself, thereby affecting the improvement of the performance of graphene reinforced composite materials. In order to obtain high-performance graphene reinforced composite materials, researchers have conducted some research on overcoming graphene agglomeration.

Graphene is a two-dimensional honeycomb like carbon material composed of carbon atoms arranged in a hexagonal pattern. The carbon carbon atoms are formed by sp2 hybridization, and their structure is very stable. The unique structure of graphene endows it with many excellent properties. Graphene is currently discovered as a material with high hardness and excellent mechanical properties. Its theoretical specific surface area is as high as 2600 m2/g, and it has outstanding thermal conductivity, which can reach up to 3000 W/(m · K). In addition, graphene also has good conductivity. At room temperature, its electron mobility can reach up to 20000cm2/(V · s). Due to the excellent properties of graphene, researchers are considering adding it as a reinforcement to the matrix material to improve its performance.

However,Ultrasonic manufacturerAnalyzing the large specific surface area of graphene often leads to its aggregation, which not only reduces its own adsorption capacity but also affects the excellent performance of graphene itself, thereby affecting the improvement of the performance of graphene reinforced composite materials. Moreover, this agglomeration is irreversible unless external forces such as ultrasound and strong stirring are applied to evenly disperse it. In order to obtain high-performance graphene reinforced composite materials, researchers have conducted some research on overcoming graphene agglomeration.

The specific surface area of graphene makes it prone to irreversible agglomeration in the matrix, which can affect the excellent performance of graphene reinforcement. Generally speaking, due to the hydrophobicity and chemical inertness of graphene, its dispersibility is relatively low compared to oxidized graphene. Therefore, the agglomeration phenomenon of graphene in the matrix has attracted increasing attention from researchers, who have tried various methods to overcome the problem of graphene agglomeration. The methods for uniform dispersion of graphene in the matrix mainly include physical dispersion and chemical dispersion. Here, we mainly introduce in-situ polymerization, functionalization of graphene (covalent functionalization and non covalent functionalization), graphene modification, and other modification methods.