Aviation insulating material modification method capable of improving flashover voltage and test system thereof

Abstract

The invention relates to an aviation insulating material modification method capable of improving flashover voltage and a test system thereof. The method comprises the following steps: step 1, pretreating an aviation insulating material sample; and 2, carrying out fluorination reaction on the aviation insulating material sample pretreated in the step 1 in a reaction cavity to obtain the aviation insulating material capable of improving the flashover voltage. According to the invention, the flashover voltage can be improved under the condition of low air pressure.

Description

technical field [0001] The invention belongs to the technical field of electric power protection, and relates to a modification method of an aviation insulating material and a testing system thereof, in particular to a modification method of an aviation insulating material capable of increasing flashover voltage and a testing system thereof. Background technique [0002] All-electric aircraft use batteries to power the propulsion system, whose key electrical components operate at low to medium direct current (DC) voltages. When working in extreme environments such as low air pressure, the insulation performance of the propulsion system requires a more robust and special assessment. [0003] Polyether ether ketone (PEEK) is a special engineering polymer with excellent electrical and thermal properties. It is extremely chemically inert and flame retardant, resistant to high temperatures, and has excellent mechanical and insulating properties. The density of PEEK is 1.34kg / dm...

AI Technical Summary

Problems solved by technology

However, because ion implantation is easy to damage the surface of the material and destroy the insulation performance of the material surface, it is easier to form a discharge channel on the surface of the material to reduce the flashover voltage, and the process of annealing and re-diffusion is complicated and difficult to control.

[0006] Discharge plasma treatment means that the low-temperature plasma generated by discharge contains a large number of high-energy electrons, which are usually greater than the bonding energy of polymer insulating materials, which can destroy long chains of molecules, promote various reactions, and introduce functional groups with other characteristics. But at the same time, due to the influence of temperature, the surface condition of the material will also change, although it can improve the anti-aging ability, it will reduce the breakdown voltage;

[0007] In the process of film coating, uneven surface coating is easy to occur, increasing surface roughness makes it more sensitive to humidity factors due to the increase of contact area, which is not conducive to improving the flashover voltage performance of aviation insulating materials

Among the existing surface modification technologies, it is impossible to obtain a modification method that can effectively increase the flashover voltage, and the modification process is not easy to grasp, and it is easy to cause material damage due to excessive modification, and the purpose of increasing the flashover voltage cannot be achieved.

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