How to distinguish static protection materials and insulating materials?
(1) Electrostatic conductive material: The surface resistivity of the material does not exceed 1×105Ω/㎡ or the volume resistivity does not exceed 1×104Ω·cm. This material has low resistance, and electrons flow easily on its surface and inside, and can flow to any other conductor or ground that it touches.
(2) Electrostatic shielding material: The surface resistivity of the material is less than 1×104Ω/㎡ or the volume resistivity is not more than 1×103Ω·cm. The Faraday protective cover made of this material can prevent electrostatic sensitive devices from being affected by static electricity. Electrostatic shielding materials are part of electrostatic conductor materials.
(3) The surface resistivity of static dissipative materials is greater than 1×105Ω/㎡ but less than or equal to 1×1012Ω/㎡, or the volume resistivity is greater than 1×104Ω·cm but less than 1×1011Ω·cm.
(4) Insulating material: The surface resistivity of the material is greater than 1×1012Ω/㎡, or the volume resistivity is greater than 1×1011Ω·cm. There is basically no current flowing on the surface or inside of the insulating material, and its resistance is very high, making it difficult to ground. The static charge in this material will remain on it for a long time.
(5) Antistatic usually refers to the material's ability to inhibit frictional electrification. The antistatic property of a material is not necessarily related to its electrical resistance or resistivity.