IOTA CORPORATION LTD
This product has good processability, good electrical insulativity, electrical erosion resistance, hydrophobicity and flame retardance. Its tracking resistance has reached the class 1A4.5. Molding and injection molding type can both meet the process requirements of customers. It is applicable to manufacturing of various composite insulators, surger arresters, insulators and high- & low-voltage electrical fittings for electrical lines of railways and urban light rails.
Typical Properties:
|
Category |
Item |
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Type 1 is applicable to molding Type 2 is applicable to injection molding |
DT-1 DT-1U |
DT-2 DT-2U |
DC-1 DC- 1U |
DC-2 DC-2U |
DD-1 DD-1U |
DD-2 DD-2U |
DE-1 DE-1U |
DE-2 |
|
|
Appearance |
Gray white red |
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Vulcanization |
Hardness Shore A |
60±2 |
60±2 |
60±2 |
60±2 |
58±2 |
58±2 |
58±2 |
58±2 |
|
Tensile strength MPa≥ |
4.5 |
4.5 |
4.0 |
4.0 |
4.0 |
4.0 |
4.0 |
4.0 |
|
|
Elongation at break %≥ |
280 |
300 |
280 |
300 |
240 |
260 |
240 |
260 |
|
|
Breaking set% ≤ |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
|
|
Tear strength B KN/m≥ |
13 |
13 |
13 |
13 |
13 |
13 |
12 |
12 |
|
|
Specific density 25°C g/cm³ |
1.50±0.05 |
1.50±0.05 |
1.50±0.05 |
1.50±0.05 |
1.50±0.05 |
1.50±0.05 |
1.50±0.05 |
1.50±0.05 |
|
|
Compression set 180*22h %≤ |
40 |
40 |
40 |
40 |
35 |
35 |
40 |
40 |
|
|
Dielectric breakdown voltage Kv/mm ≥ |
22 |
22 |
20 |
20 |
18 |
18 |
17 |
17 |
|
|
Volume resistivity Ω-Vcm ≥ |
7x10¹⁴ |
7x10¹⁴ |
5x10¹⁴ |
5x10¹⁴ |
3x10¹⁴ |
3x10¹⁴ |
1x10¹⁴ |
1x10¹⁴ |
|
|
Flame retardance |
FV-0 |
FV-0 |
FV-0 |
FV-0 |
FV-0 |
FV-0 |
FV-0 |
FV-0 |
|
|
Dielectric constant |
3-4 |
3-4 |
3-4 |
3-4 |
3-4 |
3-4 |
3-4 |
3-4 |
|
|
Dielectric loss tg δ≤ |
3x10⁻² |
3x10⁻² |
6x10⁻² |
6x10⁻² |
7x10⁻² |
7x10⁻² |
7x10⁻² |
7x10⁻² |
|
|
Tracking resistance TMA(1A4.5grade: corrosion depth mm ≤2.5) |
Pass |
Pass |
Pass |
Pass |
Pass |
Pass |
Pass |
Pass |
|
Physical data in the above table is for reference only.
Vulcanization condition: 175℃× 5Min.
Addition of curing agent: liquid 2,5-Dimethyl-2,5-di(tert-butylperoxy)hexane, flame retardant rubber 0.4%
Advantage:
- Excellent physical properties
- Excellent electrical insulativity
- The flame retardance can reach the class FV-0 stated in the national standard IEC 60707.
Applications:
- Various composite insulators, Surge arrester
- High & Low voltage electrical fittings for electrical lines of railways and urban light rails.
Packing & Storage:
- 20kg/ carton lined with plastic bags or sheets.
- The products have a shelf life of 9 months from date of manufacture depending on the shore hardness if stored at room temperature in the originally sealed container.
