Thermal diffusion films in composite materials have the following characteristics:

First of all, the thermal diffusion film plays an important role in the composite material, it can effectively conduct heat, so that the composite material can have good thermal conductivity. The thermal diffusion film can conduct heat from the high temperature to the low temperature, so as to keep the temperature uniform throughout the composite material and avoid the phenomenon of local overheating.

Secondly, the thermal diffusion film can also improve the thermal stability and high temperature resistance of the composite. Due to the existence of thermal diffusion film, the heat conduction speed of the composite material can be improved, making it more stable in high temperature environment, and not prone to thermal deformation or thermal aging problems.

In addition, the thermal diffusion film can also increase the strength and hardness of the composite material. By adding thermal diffusion film to the composite material, the microstructure of the composite material can be changed, and the stability of its lattice structure can be enhanced, thereby improving its mechanical properties, such as tensile strength, hardness and toughness.

In addition, the thermal diffusion film can also improve the surface quality and optical properties of the composite. In some applications that require high precision thermal control and optical performance, such as photovoltaic materials, laser devices, etc., thermal diffusion films can effectively improve the surface smoothness and reflectivity of composite materials, making them more suitable for these demanding applications.

In general, the thermal diffusion film plays an important role in the composite material, which can improve the thermal conductivity, thermal stability, mechanical properties and surface quality of the composite material, so that the composite material can play the best performance in various applications. Therefore, in the design and preparation process of composite materials, the application of thermal diffusion film should be fully considered to improve the overall performance and competitiveness of composite materials.