How to improve the performance of polyimide film

The performance of polyimide film is of great concern to customers and friends who need to use it. If we want to meet our actual use needs, we need to understand clearly how to improve the performance of polyimide film. In the following, professional The manufacturer gave an introduction, let’s take a look at it in detail.

Polyimide film materials have high heat resistance, corrosion resistance, mechanical properties, low dielectric properties, radiation resistance and high processing properties, so they are widely used and popularized. It also has great application value in the aerospace field.

However, due to the special environment of space and the fragility of high-tech electronic components, static electricity has caused great damage to aviation equipment and electronic products. The conductivity of polyimide film itself is very low, which limits its application in aerospace and various fields in many aspects. Therefore, the treatment and modification of polyimide materials have been brought to the forefront.

Since its preparation in 2004, graphene has become the focus of attention all over the world, and its excellent electrical conductivity, thermal conductivity and mechanical properties are among the best. Graphene can improve the conductivity and thermal stability of the material.

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 conversion of the metal dopant. Various synthesis methods of polyimide can diversify doping methods. In addition, the high solubility of polyamic acid in strong polar solvents can help inorganic substances be better doped into the polyimide film.

Therefore, in this paper, graphene is doped into polyimide to modify the polyimide film, thereby comprehensively improving the performance of the polyimide film. When graphene is incorporated into polyimide materials, dispersion is the first consideration. In fact, the dispersion of inorganic substances in inorganic/polymer materials is extremely important, and the uniformity of dispersion will affect the performance of the prepared composite membrane. In this paper, the method of incorporation of graphene is first studied, and a better mixing method is prospected. Then, the performance of the composite membrane was tested and characterized. It is expected that the addition of graphene will improve the conductivity and thermal properties of the polyimide film.