The Yellow 3240 Epoxy Fiberglass Sheet is engineered for superior mechanical strength and electrical insulation, making it ideal for use in a wide range of industrial applications. It features a minimum flexural strength of 340 MPa, ensuring robust performance even under stress. With an impact strength of 33 kJ/m² (Charpy), the material is resistant to physical damage, offering long-lasting durability.
This sheet also excels in electrical properties, with an impressive dielectric strength of 14.2 MV/m and a breakdown voltage of 35 kV, providing reliable insulation in high-voltage environments. It has a high insulation resistance of 5.0 × 10⁸ Ω when impregnated in water, making it suitable for moisture-prone conditions.
In addition to its mechanical and electrical properties, the sheet maintains a low water absorption rate of 19 mg at 1.6 mm thickness, ensuring stability in humid environments. Its density ranges from 1.70 to 1.90 g/cm³, providing a balanced structure with exceptional resistance to wear and tear. Available in natural or black, this sheet meets both mechanical and electrical requirements for a variety of applications.
Relevant Standards | - | China National Standard | Enterprise Standard | ||||
Items | - | Unit | 3240 | 3240-1 | 3240-3 | R884 | R885 |
Flexural strength perpendicular to laminations A:Under normal conditions | MIN | Mpa | 340 | 320 | 320 | 340 | 340 |
E-1/150: Under 150±5℃ | - | - | - | - | - | ||
Impact strength parallel to laminations (Charpy) | MIN | kJ/㎡ | 33 | 30 | 33 | 33 | 33 |
Insulation resistance impregnated in water D-24/23 | MIN | Ω | 5.0x108 | 1.0x108 | 1.0x108 | - | - |
Surface resistance A:Under normal condition | MIN | Ω | - | - | - | 1.0x103-5 | 1.0x106-9 |
Dielectric strength perpendicular to laminations (in oil 90±2℃),1mm in thickness | MIN | MV/m | 14.2 | 14.2 | 8.0(3mm in thickness) | - | - |
Breakdown voltage parallel to laminations (in oil 90±2℃) | MIN | kV | 35 | 30 | 30 | - | - |
Relative dielectric constant (50Hz) | MAX | - | 5.5 | - | - | - | - |
Relative dielectric constant (1MHz) | MAX | - | 5.5 | - | - | - | - |
Loss factor (50Hz) ≤ | MAX | - | 0.04 | - | - | - | - |
Loss factor(1MHz) ≤ | MAX | - | 0.04 | - | - | - | - |
Water absorption, D-24-23 1.6mm in thickness ≤ | - | mg | 19 | 19 | 19 | 19 | 19 |
Thermal resistance grade | - | - | B | B | B | B | B |
Density | - | g/cm3 | (1.70-1.90) | (1.70-1.90) | (1.70-1.90) | (1.70-1.90) | (1.70-1.90) |
Flammability | - | - | - | - | - | - | - |
Color | - | - | Natural | Natural | Natural | Black | Black |
Fiberglass:
The use of continuous fiberglass filaments provides exceptional mechanical strength and dimensional stability. Unlike traditional plastics, it can withstand high levels of stress and strain without deforming, making it a reliable structural component.
Epoxy Resin:
This resin matrix binds the fiberglass together and gives the sheet its key functional properties. It provides outstanding electrical insulation and superior chemical resistance, allowing the material to perform reliably in corrosive and high-voltage environments where other materials would fail.
Sheet Form:
Its form as a sheet provides unparalleled versatility. You can easily cut, drill, or machine the material into custom shapes, such as insulating spacers, support plates, or intricate parts for specific applications.
1. High-Voltage Electrical Equipment:
The sheet is the ideal material for structural support and insulation in large transformers and switchgear. Its unique ability to provide both high mechanical strength and complete electrical isolation in a single component is unmatched by other materials like metal or conventional plastics.
2. MRI and Medical Imaging Devices:
It is the only safe option for structural components in these devices. Its non-magnetic nature prevents any interference with the powerful magnetic fields, ensuring accurate imaging and patient safety.
3. Corrosive and Humid Environments:
In places like chemical plants or marine settings, the sheet's low water absorption and excellent chemical resistance ensure long-term reliability. Unlike metals that would corrode or other materials that would degrade, it maintains its integrity, reducing maintenance costs and operational downtime.
The Yellow 3240 Epoxy Fiberglass Sheet is engineered for superior mechanical strength and electrical insulation, making it ideal for use in a wide range of industrial applications. It features a minimum flexural strength of 340 MPa, ensuring robust performance even under stress. With an impact strength of 33 kJ/m² (Charpy), the material is resistant to physical damage, offering long-lasting durability.
This sheet also excels in electrical properties, with an impressive dielectric strength of 14.2 MV/m and a breakdown voltage of 35 kV, providing reliable insulation in high-voltage environments. It has a high insulation resistance of 5.0 × 10⁸ Ω when impregnated in water, making it suitable for moisture-prone conditions.
In addition to its mechanical and electrical properties, the sheet maintains a low water absorption rate of 19 mg at 1.6 mm thickness, ensuring stability in humid environments. Its density ranges from 1.70 to 1.90 g/cm³, providing a balanced structure with exceptional resistance to wear and tear. Available in natural or black, this sheet meets both mechanical and electrical requirements for a variety of applications.
Relevant Standards | - | China National Standard | Enterprise Standard | ||||
Items | - | Unit | 3240 | 3240-1 | 3240-3 | R884 | R885 |
Flexural strength perpendicular to laminations A:Under normal conditions | MIN | Mpa | 340 | 320 | 320 | 340 | 340 |
E-1/150: Under 150±5℃ | - | - | - | - | - | ||
Impact strength parallel to laminations (Charpy) | MIN | kJ/㎡ | 33 | 30 | 33 | 33 | 33 |
Insulation resistance impregnated in water D-24/23 | MIN | Ω | 5.0x108 | 1.0x108 | 1.0x108 | - | - |
Surface resistance A:Under normal condition | MIN | Ω | - | - | - | 1.0x103-5 | 1.0x106-9 |
Dielectric strength perpendicular to laminations (in oil 90±2℃),1mm in thickness | MIN | MV/m | 14.2 | 14.2 | 8.0(3mm in thickness) | - | - |
Breakdown voltage parallel to laminations (in oil 90±2℃) | MIN | kV | 35 | 30 | 30 | - | - |
Relative dielectric constant (50Hz) | MAX | - | 5.5 | - | - | - | - |
Relative dielectric constant (1MHz) | MAX | - | 5.5 | - | - | - | - |
Loss factor (50Hz) ≤ | MAX | - | 0.04 | - | - | - | - |
Loss factor(1MHz) ≤ | MAX | - | 0.04 | - | - | - | - |
Water absorption, D-24-23 1.6mm in thickness ≤ | - | mg | 19 | 19 | 19 | 19 | 19 |
Thermal resistance grade | - | - | B | B | B | B | B |
Density | - | g/cm3 | (1.70-1.90) | (1.70-1.90) | (1.70-1.90) | (1.70-1.90) | (1.70-1.90) |
Flammability | - | - | - | - | - | - | - |
Color | - | - | Natural | Natural | Natural | Black | Black |
Fiberglass:
The use of continuous fiberglass filaments provides exceptional mechanical strength and dimensional stability. Unlike traditional plastics, it can withstand high levels of stress and strain without deforming, making it a reliable structural component.
Epoxy Resin:
This resin matrix binds the fiberglass together and gives the sheet its key functional properties. It provides outstanding electrical insulation and superior chemical resistance, allowing the material to perform reliably in corrosive and high-voltage environments where other materials would fail.
Sheet Form:
Its form as a sheet provides unparalleled versatility. You can easily cut, drill, or machine the material into custom shapes, such as insulating spacers, support plates, or intricate parts for specific applications.
1. High-Voltage Electrical Equipment:
The sheet is the ideal material for structural support and insulation in large transformers and switchgear. Its unique ability to provide both high mechanical strength and complete electrical isolation in a single component is unmatched by other materials like metal or conventional plastics.
2. MRI and Medical Imaging Devices:
It is the only safe option for structural components in these devices. Its non-magnetic nature prevents any interference with the powerful magnetic fields, ensuring accurate imaging and patient safety.
3. Corrosive and Humid Environments:
In places like chemical plants or marine settings, the sheet's low water absorption and excellent chemical resistance ensure long-term reliability. Unlike metals that would corrode or other materials that would degrade, it maintains its integrity, reducing maintenance costs and operational downtime.
