Requirements for Semi conductive cable compounding

Semi conductive cable compounds are used in the wire and cable industry as two semi conductive layers for enclosing crosslinked Polyethylene (XLPE) layer to ensure the insulation performance of medium voltage and high voltage power cables.The production process requires that the conductive carbon black structure is not destroyed, highly dispersed into polymer matrix and evenly distributed to the melts for obtain a homogeneous compound. At the same time, polymer is required to be degraded as little as possible.

Processing Steps:

Material handling system-Compounding and extrusion- Wate ring pelletizer -Spin dryer – Classify – Packing system

Xinda Co Kneader

semicon conductive compounding system

offer several specific benefits

> Gentle shearing minimize damage to high structure carbon black:

Co-kneader’s unique combination of screws, pins and barrels can provides low shear which will reduce the breakage to materials’ physical character.

High dispersion of carbon black:

Co-kneader’s multiple flights interacted with the pins provides excellent kneading  effect by increasing the mixing circles. Thus carbon black can be highly dispersed and distributed evenly in the melts.

> Precise temperature control minimize polymer degradation

Temperature prob can immerse into melts through hollow pin in each processing zone so that we can get the accurate real-time temperature all the time .

High filling rate of inorganic powders:

Opening of two or three inlets & low shearing allow the maximum loading rate of inorganic powders.

> Flexible liquid injection position:

Liquid ingredients can be conducted into melts at designated position which helps customer to achieve the best formula solution.

> Flexible screw configuration:

Co-kneader’s screw profile can be changed by adjusting the serial of modular designed screw. It makes the compounding system adaptable to all requirements.