Business > Industrial Devices > Automation Controls Top > Service & Support > FA Technical Support > Technical Guide (FA Sensors) > Static Removers (Ionizers) > About Static Electricity
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The number of electrons is fixed that can exist on each orbit around atomic nucleus. The innermost orbit has 2 electrons, the second has 8, and the third has 18. Sodium (Na) has 11 electrons, but the innermost and second orbits are full. Therefore, the last electron travels in the outer orbit. This state is electrically stable because it has the same number of protons (positive) and electrons (negative). |
When two materials come into close contact, negative electrons move freely from molecule to molecule between the two. |
Contact electrificationElectrification that occurs when two objects are simply brought into contact with each other.
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Frictional electrificationElectrification that occurs due to friction.
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Rolling electrificationElectrification that occurs when a solid of revolution rolls over another object.
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Separation electrificationElectrification that occurs due to the separation of contact sides. When the separation speed is faster, the amount of electrification becomes greater.
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Ejection electrificationElectrification that occurs due to friction when high pressure gas or liquid is ejected from nozzles.
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Induction chargingElectrification that occurs due to electrostatic induction.
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As contact dimensions become larger, the amount of static electricity becomes greater.
As pressure becomes higher, the amount of static electricity becomes greater.
As the amount of friction becomes greater, the amount of static electricity becomes greater.
There are no significant changes. However, when temperature is higher, the resistance value becomes smaller (insulator).
When humidity becomes higher, the amount of static electricity becomes smaller.
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