Why do anti-static materials need plastic instead of metal?
Metal can conduct static electricity away, but it has the following problems when used as an ESD protection material:
1. It is prone to personal injury accidents when the operator accidentally touches high voltage or hard ground due to electric leakage;
2. If there is a band of electrostatic products close to it, because the metal is a good conductor, electrostatic discharge is very easy to occur at this time, and its energy is released quickly, and the discharge sparks and electromagnetic noise that occur will cause great damage to the components; , When operating on a metal table, the connecting wires of the device or the printed circuit board will cause a short circuit and cause damage due to contact with the metal conductive surface. Therefore, static electricity protection materials generally choose static dissipative materials with surface resistivity 10 ≤ ＜10 Ω/sq or volume resistivity 10 Ω.cm≤ ＜10 Ω.cm, and the degree of electrostatic conduction and accumulation of static electricity on it is between that of static electricity. Between the conductor and the electrostatic insulator.