I had a job in university testing breakdown voltages in various flavors of Kapton. IIRC the idea was to see how suitable they would be for spacecraft constructi

I had a job in university testing breakdown voltages in various flavors of Kapton. IIRC the idea was to see how suitable they would be for spacecraft construction where they would be exposed to high voltages from solar wind. We could always tell when a test run was complete because the EM interference from >10 kV suddenly shorting to ground caused our computers to freeze. (Thankfully they still recorded the data we needed.)