ZC-T054 Polypropylene Shielding Compound for Medium Voltage Cables (Up to 35 kV)
Overview
ZC-T054 is a thermoplastic semiconductive polypropylene (PP) compound engineered for medium-voltage power cables up to 35 kV. Its advanced, non-crosslinked formulation eliminates the need for post-degassing, reducing production time and improving manufacturing efficiency. Designed for clean, stable extrusion, it is fully compatible with PP and XLPE insulation in multi-layer co-extrusion setups.
Thermoplastic, no crosslinking – Simplifies production, shortens lead time, and removes the need for degassing.
Excellent shielding stability – Maintains mechanical integrity and consistent electrical performance.
Clean extrusion – High melt stability ensures smooth surface finish and reliable resistivity.
Environmentally friendly – Easier to recycle than crosslinked materials, reducing environmental impact.
Type-tested reliability – Backed by National Cable Testing Center reports (typical values available on request).
Conductor and insulation shielding layers for medium-voltage cables up to 35 kV.
CCV catenary lines and other continuous extrusion systems.
Multi-layer co-extrusion with PP or XLPE insulation compounds.
Base Polymer: Polypropylene with selected polyolefin modifiers.
Functional Fillers: Conductive carbon black for stable electrical conductivity.
Additives: Antioxidants, lubricants, and specialized processing aids.
Extrusion Equipment: CCV catenary or equivalent continuous extrusion lines.
Temperature Capability: Extruder settings up to ≥ 250 °C to suit PP processing.
Screw Design: Single-flight, equidistant, variable-depth screw; L/D ≈ 25:1; compression ratio ≈ 2.
Screen Pack: Recommended three-layer 40/80/40 mesh.
Temperature Profile: Adjust within the PP processing window for smooth surface and stable resistivity.
Material Handling: Keep sealed and dry; purge and clean equipment before and after runs.
Typical electrical and mechanical properties available upon request.
Supplied with Certificate of Analysis (COA) for each batch.
Additional customer-specified testing can be arranged.
Standard Packaging: ~600 kg moisture-proof, sun-proof shipment sets.
Inner Lining: Corrugated carton with sealed film bag.
Storage Conditions: Keep sealed until use, store in a clean, dry, ventilated area, avoid direct sunlight and moisture.
Process in well-ventilated areas.
Follow standard safety measures for handling polymer compounds and carbon-black-containing materials.
Refer to the product SDS for detailed safety guidance.
MOQ & Lead Time: Based on order volume and customization requirements.
Custom Options: Labeling, packaging, documentation, and QA plans.
Technical Support: On-site or remote assistance for process tuning and start-up.
Q1: Is crosslinking required?
A1: No. ZC-T054 is fully thermoplastic and does not require crosslinking or degassing after extrusion.
Q2: What voltage rating is it designed for?
A2: Suitable for extruded medium-voltage cables up to 35 kV.
Q3: Can it be processed on CCV lines?
A3: Yes. It is compatible with continuous CCV extrusion using standard PP-capable equipment.
Q4: Do you provide property data?
A4: Yes. Typical type-test data is available on request.
Property:
The typical values in the table come from the type test report issued by the National Cable Testing Center.
Processing:
1. It can be used in the conventional production of 35kV and below power cable CCV catenary production line equipment extrusion, no need for crosslinking and degassing. The extruder should meet the maximum temperature control not less than250 ℃, to meet the polypropylene extrusion manufacturing.
Extrusion temperature setting
It is recommended to use a three-layer filter (40-80-40); Before and after production, the extruder should be cleaned.
1. It is recommended to use a single-thread equidistant varied deep screw extruder with a screw length-diameter ratio of 25:1 and a screw compression ratio of about 2 for production, together with the use of special shielding products for polypropylene insulation.
The recommended extrusion processing temperature is as below:
-Above temperature is only for reference. It is recommended that customers adjust according to the current at the time of extrusion, the melting pressure and the actual situation after the cable extrusion.
Product packing
600kgs, moisture-proof, sunscreen. (corrugated carton packaging, with sealed film bag inside)
Note:
1. 1.Before use, it is necessary to confirm that the sealed packaging is intact. The product should not be exposed to air for a long time.
2. 2.Transportation, stacking and storage should prevent sun, rain and water immersion, etc.and the storage environment should be clean, dry and ventilated.
