Only this step is needed to improve the polyimide film

How can the performance of polyimide film be improved? Let us take a look together.

Polyimide film material is a kind of extremely high heat resistance, corrosion resistance, mechanical properties, low dielectric properties, radiation resistance and high processability, so its use is very wide and popular. It also has great application value in the aerospace field.

However, due to the special environment in space and the fragility of high-tech electronic components, static electricity causes considerable damage to aviation equipment and electronic products. The conductivity of the polyimide film itself is extremely low, which limits its application in aerospace and various fields in many aspects, so the modification of the polyimide material has been brought to the fore.

Graphene has become the focus of attention immediately after it was prepared in 2004, and its excellent electrical conductivity, thermal conductivity and mechanical properties are all in the ranks of performance. Adding graphene to the material will improve its conductivity and thermal stability.

Some modification of the metal dopant doped in the polymer composite material needs to be carried out at a relatively high temperature. The high temperature resistance of polyimide can ensure the normal decomposition and transformation of the metal dopant. The multiple synthesis methods of polyimide allow for the doping methods to be varied. In addition, the high solubility of polyamic acid to strong polar solvents can help inorganic substances be better doped into polyimide film.

Therefore, in this paper, graphene is incorporated into polyimide to modify the polyimide film to improve all aspects of the performance of the polyimide film. The first consideration when graphene is incorporated into polyimide materials is the dispersibility. In fact, the dispersibility of inorganic materials in inorganic/polymer materials is extremely important, and the uniformity of dispersion can affect the prepared composite film. Performance.

This article first studied the method of graphene incorporation, looking forward to a better mixing method, and testing and characterizing the performance of the composite film. It is expected that the addition of graphene will affect the conductivity and thermal properties of the polyimide film. And some other properties have certain