Charged properties of different materials

[Mei J]

Which objects are easily conductive? Many people should think of metal. Metals such as iron, copper, and aluminum are easily conductive objects.
So which objects are not easy to conduct electricity? Plastic, rubber, etc. are typical representatives of such anti-static epoxy resin.
The conductivity of an object will vary depending on the material.
conductors and insulators
Objects that conduct electricity like metals are called "conductors (conductors)." In contrast, objects that do not conduct electricity easily are called "insulators". As mentioned at the beginning, typical representatives of conductors are iron, copper, etc., and typical representatives of insulators are plastic and rubber.
It has been explained just now that static electricity will be generated when two objects touch each other. It doesn't matter whether the object in contact is a conductor or an insulator. However, the properties of static electricity generated by conductors and insulators differ as follows.
The direction of the static electricity generated by the conductor
Assume the conductor is live. If not dealt with, it will continue to be charged. However, the conductor will instantly return to the initial state without static electricity due to "a certain action". "A certain action" is "grounded".
The so-called grounding refers to the device that connects the conductor to the earth (earth), or is used to connect the earth (earth). The Earth is "very large and a stable conductor of electric charges". After connecting other conductors to the earth, charge channels can be formed.
For example, when a positively charged object is grounded, the negative charge of the earth is supplied to the object through the grounding. When a negatively charged object is grounded, the negative charge on it will flow to the earth through the ground.
After grounding, the object can transition to a stable state without static electricity.
Where does the static electricity generated by the insulator go?
When insulators generate static electricity, they go in a different direction than conductors. Since insulators are difficult to conduct electricity, even if they are grounded, the accumulated static electricity will not flow away.