In fact, the enamel reaction kettle has grounding treatment, but the substances inside the reaction kettle are all high insulation media. Unlike the static electricity of metal strips, the static electricity of this highly insulating medium will immediately discharge. It has a discharge time of 478. 1 seconds, and the decay of the internal charge of the insulating medium is less than one-third of the original charge. It takes some time to fully release the charge. During this period, if in contact with a conductor, there is still a possibility of discharge causing electric sparks and explosions.
Some high insulation materials have longer discharge time constants, reaching several hours or even days. Therefore, in highly insulating media such as gasoline, it is difficult to conduct charges through immediate grounding, which is also the reason why static electricity affects the production of enamel reaction vessels.