Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Specific Features
- Excellent hydrophobicity behavior
- Resistant to tracking and erosion
Applications & Uses
- Markets
- Applications
- Cure Method
- Plastics & Elastomers End Uses
- Applications
- Arresters
- Insulators
- Application Details
POWERSIL® 311 MH is the silicone rubber of choice for the manufacture of electrical insulating equipment for outdoor use, e.g. composite insulators, arrester housings, bushings etc., especially suitable for extruded parts that are cured in air.
Processing
POWERSIL® 311 MH is typically processed by extrusion onto rods, profiles or other semi-finished products and then cured at elevated temperature in air. To achieve a good bond between typically-used materials for electrical insulation equipment a primer is necessary.
Properties
- Color
- Cured Properties
- Properties
- Very good arc resistance
- Suitable dielectric properties
- Good mechanical properties
- Note
Cure conditions: 15 min / 165°C in press.
| Value | Units | Test Method / Conditions | |
| Arc Resistance | min. 300 | seconds | IEC 61621 |
| Density | 1.58 | g/cm³ | DIN EN ISO 1183-1 A |
| Dielectric Strength | 23 | kV/mm | IEC 60243-1 |
| Dissipation Factor (tan δ, at 50Hz) | 2x10⁻² | — | IEC 62631-2-1 |
| Elongation (at break) | 100 | % | ISO 37 Type 1 |
| Permittivity (at 50Hz) | 3.7 | — | IEC 62631-2-1 |
| Shore Hardness A | 80 | — | DIN ISO 48-4 |
| Tear Strength | 10 | N/mm | ASTM D 624 B |
| Tensile Strength | 4 | N/mm² | ISO 37 Type 1 |
| Tracking Resistance | 1A 4.5 | — | IEC 60587 |
| Volume Resistivity | 10¹⁴ | Ohm-cm | IEC 62631-3-1 |
Regulatory & Compliance
- Certifications & Compliance
Packaging & Availability
- Country Availability
- Regional Availability
- Packaging Information
This product is available in 20 kg and 540 kg cardboard packaging.
Storage & Handling
- Storage Information
Store in a dry and cool place. The containers must be protected against sunlight. Keep separate from organic rubber and crosslinker chemicals.