Carbon black for cable shielding materials

1. Carbon black manufacturer's product cable shielding material special carbon black material conductivity and conductive filler (conductive carbon black model and filling amount), matrix resin (polymer type and crystallinity), additives, solvent and processing and preparation process For the above, the following suggestions are for reference only. Different systems, uses and requirements, their formulations and processing techniques are also different, and specific experimental studies should be carried out.

2. Under normal circumstances, when used in a coating, when the amount of conductive carbon black added is -5% (% by weight PWC), the sheet resistance of the coating is 105 to 106 Ω.

3. In linear low-density polyethylene (LLDPE), when the amount of conductive carbon black added is ～10% (weight percent PWC), the sheet resistance of the product is 103-104 Ω; in low-density polyethylene (LDPE), when When the addition amount is ～10%, the sheet resistance of the product is 104-105 Ω; in polypropylene (PP), when the addition amount is 5-8%, the sheet resistance of the product is 104-105 Ω; in polyvinyl chloride (PVC) When the amount of conductive carbon black added is -155% (PWC), the surface resistance of the PVC product is 103 to 104 Ω at 150 ° C for two minutes, and the surface resistance of the PVC product is 103 to 104 Ω. When the addition amount is ～25% (PWC), the PVC product The sheet resistance is less than 100Ω.

4. In silicone rubber 110-2, when the amount of conductive carbon black added is ～10% (weight percent PWC), the sheet resistance of the product is 103-104 Ω; when the addition amount is -155% (PWC), the sheet resistance of the product It is 101 to 102 Ω; when the amount is -20% (PWC), the sheet resistance of the product is 30 Ω. The volume resistivity is 100 to 101 Ω·cm.