3241 is a semiconductor laminated glass cloth sheet made of alkali free glass fiber cloth immersed with epoxy phenolic resin add conductive component by hot pressed to form into laminated products that has semi conducting performance suitable for corona resistant material of a large high-voltage motor slot.
The appearance of semiconductor laminated glass cloth sheet need no bubbles , pits or wrinkles. It allows a little of spots. The edges need to be cut neatly and the end face must not have layer or cracks.
3241 Semiconductor Fiberglass Sheet
Grade B (130 degree)
HB
Epoxy resin + Fiber glass
Black
0.1~300mm or customized.
1.80~2.0g/cm³
1020x2010mm,1020x2040mm,1220x2440mm or customized.
Semiconductor properties;
Anticorona properties;
Good mechanical properties;
Moisture resistance;
Heat resistance;
Temperature resistance: Class B, 130℃
● Can be used as anti-coroning material between large motor grooves
● Can also be used as non-metallic wear-resisting structural parts material under high conditions.
| TESTING ITEMS | NEMA | - | ||
| IEC | 3241 | |||
| DIN | - | |||
| Physical Properties | Standard | Unit | Ref Value | Test Value |
| Density | ISO 1183 | g/cm3 | 1.8-2.0 | 1.8-2.0 |
| Water absorption ( 3mm) | ISO 62 | mg | ≤35 | 30 |
| Mechanical Properties | Standard | Unit | Ref Value | Test Value |
| Flexural strength | ISO 178 | MPa | ≥340 | 420 |
| Elastic modulus of bending test | ISO 178 | MPa | ≥21000 | 21000 |
| Compressive strength perpendicular | ISO 604 | MPa | ≥350 | 420 |
| Impact strength Charpy or Izod | ISO 179/3C | kJ/m2 | ≥30 | 50 |
| Shear strength parallel | VDE 0318/2 | MPa | ≥50 | 80 |
| Tensile strength | ISO 527-4 | MPa | ≥200 | 300 |
| Electrical Properties | Standard | Unit | Ref Value | Test Value |
| Dielectric strength ⊥1mm at 90 °C in oil | IEC 60243-1 | kV/mm | ≥8.0 | 9.0 |
| Breakdown voltage ∥ at 90 °C in oil | IEC 60243-1 | kV | ≥35 | 50 |
| Permittivity 50 Hz | IEC 60250 | - | ≤5.5 | - |
| Permittivity 1 MHz | IEC 60250 | - | ≤5.5 | - |
| Dissipation factor 50 Hz | IEC 60250 | - | ≤0.05 | - |
| Dissipation factor 1 MHz | IEC 60250 | - | ≤0.05 | - |
| Insulation resistance after 24h in water | IEC 60167 | MΩ | 10^9~10^12 Ω | 10x10^11 |
| Comparative tracking index (CTI) | IEC 60112 | V | - | - |
| Thermal Properties | Standard | Unit | Ref Value | Test Value |
| Thermal Endurance | IEC 60216 | T.I. | ≤155 | 155 |
| Flammability | IEC60707 | Class | - | - |
Yes, based on drawings or samples.
UL, RoHS, REACH, CE, ISO, etc.
Usually 100 kg or 100 sheets, negotiable.
Yes, common samples free, buyer pays freight.
2-4 weeks after payment.
Yes, including labeling and packaging.
Yes, over 20 years.
T/T 30% deposit, 70% before shipment. Negotiable if supports needed.
Yes, we offer CNC machining.
Manufacturer and Exporter
No.3, Mianzhi Street, Zhucheng, Shandong, China
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