This product is a heat-vulcanized silicone rubber compound. It uses platinum vulcanization or di-tetra vulcanization and is suitable for extrusion. It offers strong mechanical performance, high tear strength, and stable overall properties.
· Easy to process on rollers. It does not stick to the rollers and has moderate plasticity.
· Smooth extrusion with a clean and uniform surface.
Used for extruding insulation layers and sheath layers for wires.
Suitable for high-voltage and low-voltage automotive cables, marine cables, and other special cables. It meets LV112, LV216, ISO6722, QC/T1037, and temperature grades of 150°C, 180°C, and 200°C.
Extruded silicone cable material is built for harsh environments. Silicone rubber provides key advantages such as:
High-temperature resistance
Low-temperature flexibility
Chemical resistance
Weather resistance
Strong electrical insulation
These properties make it suitable for cable insulation and sheaths used in high-heat, extreme-climate, or chemically demanding environments.
The production process includes several main steps:
Raw material preparation
Mixing
Extrusion – silicone rubber is heated, softened, and pushed through a die to form the insulation or sheath layer.
Primary vulcanization – stabilizes the material’s physical and chemical properties.
After extrusion and primary vulcanization, the material goes through secondary vulcanization. This step:
Removes by-products created during the first vulcanization
Improves stability and reliability
Is usually done in an oven with controlled temperature and time
Thanks to its strong performance, extruded silicone cable material is widely used in the wire and cable industry. Continuous optimization of processing and manufacturing helps improve durability and overall quality, ensuring the material meets the needs of tough and specialized applications.
| Project | Basic Indicators | Unit | |
| Types | Extruded Vapor Phase Silicone | Extruded Precipitated Silicone | |
| Appearance | High clarity | Milky-white | \ |
| Plasticity | 260±30 | 160±30 | \ |
| Hardness | 67±3 | 60±3 | Shore A |
| Density | 1.20±0.03 | 1.16±0.03 | g/cm3 |
| Tensile Strength | 9 | 7 | (Mpa)≥ |
| Elongation at Breakage | 400 | 350 | (%)≥ |
| Tear Strengt | 22 | 15 | (N/mm)≥ |
| Volume Resistivity | 10^15 | 10^13 | (Ω•cm)≥ |
| Breakdown Strength | 22 | 18 | (kV/mm)≥ |
| Operating Temperature | -50~200 | -50~200 | ℃ |