When your project demands a material that is both mechanically robust and electrically sound, you can count on our Insulation Phenolic Cotton Fabric Laminated Tubes. We've engineered our tubes to provide a remarkable flexural strength of ≥80.0 MPa and compressive strength of ≥45 MPa, ensuring they stand up to significant mechanical stress. For your critical electrical applications, their superior dielectric strength of ≥35 MV/m provides the reliable insulation you need in environments like transformer oil. We know precision is key, which is why our tubes have a minimal water absorption rate (≤4%), guaranteeing the dimensional stability you need for high-tolerance parts. With a thermal resistance of Grade B, our tubes maintain performance in temperatures up to 130°C, making them a trusted choice for electrical and structural supports.
Properties | Type | Phenolic Cotton Fabric Laminated Tube | |
Item No. | 3526 | ||
Density | g/cm3 | 1.04-1.20 | |
Water absorption | % | ≤4 | |
Thermal resistance grade | - | B | |
Flexural strength | Mpa | ≥80.0 | |
Compressive strength | Mpa | ≥45 | |
Surface resistance | Under normal condition | Ω | ≥1.0x108 |
In case of humidity | ≥1.0x10⁷ | ||
Volume resistivity | Under normal condition | Ω·m | ≥1.0x10⁷ |
In case of humidity | ≥1.0x105 | ||
Dielectric strength perpendicular to laminations (withstand voltage) (in 90±2°C/5min transformer oil) | MV/m | ≥35 in 20℃ transformer oil | |
Surface and Color | - | Vanished or Non Vashined, Natural | |
Lightweight and Durable:
With a density of 1.04-1.20 g/cm³, this tube is significantly lighter than many metals, making it an excellent choice for applications where reducing overall weight is crucial. Despite its light weight, it provides impressive flexural and compressive strength (≥80.0 MPa and ≥45 MPa), allowing it to withstand significant mechanical stress without breaking.
Superior Insulation in Any Condition:
You can rely on our tubes for their exceptional electrical properties. Under normal conditions, both the surface resistance and volume resistivity are extremely high (≥$1.0\times 10^8$ Ω and ≥$1.0\times 10^7$ Ω·m, respectively). Even in humid environments, these values remain very high, ensuring that your equipment remains safe from electrical leakage.
High Voltage Resistance:
Our product boasts a dielectric strength of ≥35 MV/m, which means it can withstand extremely high voltage without suffering electrical breakdown. This makes it an ideal choice for high-voltage applications where safety and reliability are paramount.
Thermal Stability:
Rated at Thermal Resistance Grade B, our tubes can operate continuously at temperatures up to 130℃. This thermal stability ensures that the material maintains its mechanical and electrical integrity even when exposed to high heat, a common challenge in motors and transformers.
You can apply our Phenolic Cotton Fabric Laminated Tubes in many specific scenarios:
1. High-Voltage Switchgear:
With its high dielectric strength and volume resistivity, our product can be made into insulating support rods and partitions within switchgear cabinets to prevent arcing between high-voltage coils.
2. Transformers:
In oil-immersed transformers, this material can be processed into insulating pressboards and coil skeletons. You can rely on its high voltage and oil resistance to ensure safety inside the transformer.
3. Generators and Motors:
Leveraging its Class B thermal resistance, it can be used as coil wedges, insulating end plates, and motor shaft bushings, providing reliable insulation and support when the motor heats up during operation.
4. Rail Transit:
We use its high mechanical strength and wear resistance to make insulating bushings or sliders for the pantographs and current collectors on electric locomotives, ensuring the system operates stably under high loads.
5. Electrical Equipment in Humid Environments:
Due to its excellent moisture resistance, our product is especially suitable for use in marine, port equipment, or underground cable systems, where it can serve as insulating sleeves or connectors to resist corrosion from salt spray and moisture.
When your project demands a material that is both mechanically robust and electrically sound, you can count on our Insulation Phenolic Cotton Fabric Laminated Tubes. We've engineered our tubes to provide a remarkable flexural strength of ≥80.0 MPa and compressive strength of ≥45 MPa, ensuring they stand up to significant mechanical stress. For your critical electrical applications, their superior dielectric strength of ≥35 MV/m provides the reliable insulation you need in environments like transformer oil. We know precision is key, which is why our tubes have a minimal water absorption rate (≤4%), guaranteeing the dimensional stability you need for high-tolerance parts. With a thermal resistance of Grade B, our tubes maintain performance in temperatures up to 130°C, making them a trusted choice for electrical and structural supports.
Properties | Type | Phenolic Cotton Fabric Laminated Tube | |
Item No. | 3526 | ||
Density | g/cm3 | 1.04-1.20 | |
Water absorption | % | ≤4 | |
Thermal resistance grade | - | B | |
Flexural strength | Mpa | ≥80.0 | |
Compressive strength | Mpa | ≥45 | |
Surface resistance | Under normal condition | Ω | ≥1.0x108 |
In case of humidity | ≥1.0x10⁷ | ||
Volume resistivity | Under normal condition | Ω·m | ≥1.0x10⁷ |
In case of humidity | ≥1.0x105 | ||
Dielectric strength perpendicular to laminations (withstand voltage) (in 90±2°C/5min transformer oil) | MV/m | ≥35 in 20℃ transformer oil | |
Surface and Color | - | Vanished or Non Vashined, Natural | |
Lightweight and Durable:
With a density of 1.04-1.20 g/cm³, this tube is significantly lighter than many metals, making it an excellent choice for applications where reducing overall weight is crucial. Despite its light weight, it provides impressive flexural and compressive strength (≥80.0 MPa and ≥45 MPa), allowing it to withstand significant mechanical stress without breaking.
Superior Insulation in Any Condition:
You can rely on our tubes for their exceptional electrical properties. Under normal conditions, both the surface resistance and volume resistivity are extremely high (≥$1.0\times 10^8$ Ω and ≥$1.0\times 10^7$ Ω·m, respectively). Even in humid environments, these values remain very high, ensuring that your equipment remains safe from electrical leakage.
High Voltage Resistance:
Our product boasts a dielectric strength of ≥35 MV/m, which means it can withstand extremely high voltage without suffering electrical breakdown. This makes it an ideal choice for high-voltage applications where safety and reliability are paramount.
Thermal Stability:
Rated at Thermal Resistance Grade B, our tubes can operate continuously at temperatures up to 130℃. This thermal stability ensures that the material maintains its mechanical and electrical integrity even when exposed to high heat, a common challenge in motors and transformers.
You can apply our Phenolic Cotton Fabric Laminated Tubes in many specific scenarios:
1. High-Voltage Switchgear:
With its high dielectric strength and volume resistivity, our product can be made into insulating support rods and partitions within switchgear cabinets to prevent arcing between high-voltage coils.
2. Transformers:
In oil-immersed transformers, this material can be processed into insulating pressboards and coil skeletons. You can rely on its high voltage and oil resistance to ensure safety inside the transformer.
3. Generators and Motors:
Leveraging its Class B thermal resistance, it can be used as coil wedges, insulating end plates, and motor shaft bushings, providing reliable insulation and support when the motor heats up during operation.
4. Rail Transit:
We use its high mechanical strength and wear resistance to make insulating bushings or sliders for the pantographs and current collectors on electric locomotives, ensuring the system operates stably under high loads.
5. Electrical Equipment in Humid Environments:
Due to its excellent moisture resistance, our product is especially suitable for use in marine, port equipment, or underground cable systems, where it can serve as insulating sleeves or connectors to resist corrosion from salt spray and moisture.
