Technological method for electrostatically spraying 10-5017 blue epoxy powder on copper components

Abstract

The invention provides a technological method for electrostatically spraying 10-5017 blue epoxy powder on copper components. The method has the advantages that the components are preheated at the temperatures ranging from 100 DEG C to 104 DEG C for 5 minutes to 10 minutes, so that the thicknesses of electrostatically sprayed coatings can be effectively increased; the component preheating temperatures and various electrostatic spraying parameters are controlled, so that the thicknesses of the coatings can range from 101 micrometers to 254 micrometers under the control after the 10-5017 epoxy powder is electrostatically sprayed on bus bars, the maximum leakage currents of the bus bars with certain voltage withstand values are not higher than 0.83mA within 30 seconds under the conditions of frequencies of 50HZ and voltages of 1250V, and accordingly requirements of designers on the electrostatically sprayed coatings, with the 10-5017 blue epoxy powder, of the bus bars can be met.

Description

technical field [0001] The invention relates to the technical field of surface treatment, in particular to a process method for electrostatically spraying 10-5017 blue epoxy powder on copper parts. Background technique [0002] With the launch of the domestic large aircraft project, as a supplier of the large aircraft power system, in the process of cooperating with the design unit, referring to the design standards of the other party, the bus bar of the power supply system is required to use AkzoNober 10-5017 blue epoxy powder coating , because the coating has good protective and insulating properties, it can be used as an insulating and protective coating for bus bars used in aircraft high-power power generation and distribution systems. [0003] The power distribution system of large passenger aircraft is transmitted through various bus bars. Due to the weight reduction of the aircraft and the reduction of the occupied volume of each part, the power supply is connected in...

AI Technical Summary

Problems solved by technology

If the bus bar is directly electrostatically sprayed with 10-5017 blue epoxy powder, the current international and domestic basic coating thickness is in the range of 50 μm to 90 μm, the coating thickness does not meet the requirements, and the coating’s withstand voltage value is at a frequency of 50HZ. When the maximum leakage current is 0.83mA, the maximum withstand voltage does not exceed 900V. During use, the coating is easily broken down, and various bus bars are short-circuited, etc., which will affect the power supply system.