Facing the practical demands of insulation materials for improvement of comprehensive performances such as surface insulation and weather resistance

it is of great significance to develop novel surface modification and improvement technologies for insulations. Atmospheric pressure low-temperature plasma technology has shown unique advantages in the field of insulation surface modification because of its high reactivity

controllable modification effect and free pollution. We review the research progress of atmospheric pressure plasma insulation surface modification technology in recent years

and summarize the plasma sources

treatment methods and plasma reaction process on material surface which are suitable for insulation modification. Then

starting from the specific needs of insulation for surface performances improvement

we introduce the application of plasma in surface hydrophilic/hydrophobic modification

surface charge regulation

flashover voltage promotion

insulating surface repair

and nanocomposite insulation synthesis. Finally

future prospects in atmospheric pressure low-temperature plasma insulation modification are proposed based on micro-reaction mechanism

modification optimization

and the long-term service characteristics of modified insulation

aiming to further promote the application of plasma technology in the field of high voltage insulation.