Electrostatic

Definition - What does Electrostatic mean?

Electrostatics refers to stationary electric charges; therefore it is known as static electricity. It accumulates charge on the surface of objects resulting from contact with other surfaces.

Electrostatic is commonly used in xerography, air filters and some automotive paints. Some known uses of electrostatic method are:

  • Electrostatic spraying
  • Electrostatic precipitation
  • Electrostatic coating
  • AC impedance

Adsorption may also occur due to electrostatic attraction. It involves the adsorption of ions through Coulombic forces, and is normally referred to as ion-exchange.

Corrosionpedia explains Electrostatic

Electrostatic is static electricity. This is buildup electric charges on two objects that are apart from each other. Electrostatic may cause damage to small electrical equipment. For example, damage of electronic components of photocopiers is seen during manufacturing or the operation of them.

The theory of electrostatic induction is used to the benefit of industries for many years. It was first used in industrial painting systems. In electrostatic painting, electrical charge creates a strong bond between the metal surface and the paint. Powder coating also uses electrical charge to attract coating materials to the metal substrate. It is now very common in the application of enamel and polyurethane paints to automobiles, bicycles and other products.

The electrostatic theory also applies to a filtration device known as electrostatic precipitator (ESP). It is used to remove fine particles such as dust and smoke from exhausting gas before discharging to the atmosphere. ESP is very common in the cement, refinery and petrochemical and power generation industry for removing fine particles. Since ESP applies energy selectively to the particulate matter being collected, it is very energy efficient.

Adsorption may also occur due to electrostatic attraction. It involves the adsorption of ions through Coulombic forces, and is normally referred to as ion exchange.

Electrostatic discharge (ESD) or "static shock" refers to the transfer of electrical charge in an unstable high voltage field on a non-conductive surface. It gives a mild shock when people walk across a carpeted floor. ESD affects hard disc drives severely.

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