CF6850 347/347F High-Strength Epoxy Glass Fabric Laminate

347/347F High-Strength Epoxy Glass Fabric Laminate Description

347/347F High-Strength Epoxy Glass Fabric Laminate is a premium composite material fabricated by hot-pressing non-alkali E-glass fabric with flame-retardant benzoxazine resin, resulting in a robust laminate with exceptional mechanical, electrical, and thermal properties. This laminate exhibits impressive mechanical strength, with a tensile strength of approximately 275 MPa and a flexural strength of around 186 MPa. Its dielectric strength in oil at 90°C is greater than 13 kV/mm, and it maintains a low dielectric dissipation factor of less than 0.04, ensuring stable electrical performance. Thermally, it is rated for Class H insulation, withstanding continuous use at temperatures up to 180°C. The laminate's low water absorption and high comparative tracking index further enhance its suitability for demanding applications. These combined properties make 347/347F laminate ideal for use in electrical and electronic equipment requiring high mechanical strength, excellent electrical insulation, and reliable thermal stability.

347/347F High-Strength Epoxy Glass Fabric Laminate Applications

347/347F High-Strength Epoxy Glass Fabric Laminate is a high-performance composite material made by hot-pressing non-alkali E-glass fabric with flame-retardant benzoxazine resin, offering excellent mechanical strength, electrical insulation, and thermal stability up to 210 °C. It is suitable for demanding applications in electrical and electronic equipment.

This laminate's exceptional properties make it ideal for use in electrical machinery, including components such as switchgear, transformers, and motor parts, ensuring safe and efficient operation in demanding environments. Its resistance to moisture and transformer oil makes it suitable for applications exposed to humid or submerged conditions. The laminate's high thermal resistance allows it to function effectively in high-temperature settings, making it ideal for use in electrical machinery and equipment operating at elevated temperatures. Additionally, its mechanical strength and durability make it a preferred choice for structural components in various industrial applications, contributing to the longevity and reliability of machinery and equipment. The versatility of 347/347F High-Strength Epoxy Glass Fabric Laminate across different sectors underscores its importance as a material that combines strength, insulation, and thermal resistance to meet the rigorous demands of modern industrial applications.

347/347F High-Strength Epoxy Glass Fabric Laminate Packaging

Our products are packaged in customized cartons of various sizes based on the material dimensions. Small items are securely packed in PP boxes, while larger items are placed in custom wooden crates. We ensure strict adherence to packaging customization and the use of appropriate cushioning materials to provide optimal protection during transportation.

Packaging: Carton, Wooden Box, or Customized.

Kindly review the packaging details provided for your reference.

Manufacturing Process

1.       Testing Method

(1)    Chemical Composition Analysis - Verified using techniques such as GDMS or XRF to ensure compliance with purity requirements.

(2)    Mechanical Properties Testing - Includes tensile strength, yield strength, and elongation tests to assess material performance.

(3)    Dimensional Inspection - Measures thickness, width, and length to ensure adherence to specified tolerances.

(4)    Surface Quality Inspection - Checks for defects such as scratches, cracks, or inclusions through visual and ultrasonic examination.

(5)    Hardness Testing - Determines material hardness to confirm uniformity and mechanical reliability.

Please refer to the SAM testing procedures for detailed information.

347/347F High-Strength Epoxy Glass Fabric Laminate FAQs

Q1. What is the maximum temperature at which 347/347F laminate can be used?

347/347F laminate is rated for Class F insulation, which means it can withstand continuous operating temperatures up to 155°C (311°F). This makes it suitable for high-temperature environments such as electric motors, transformers, and switchgear.

Q2. Is 347/347F laminate suitable for use in humid environments?

Yes, 347/347F laminate has low water absorption, ensuring dimensional stability and performance in humid conditions. Its electrical properties remain reliable even after exposure to moisture.

Q3. Can 347/347F laminate be machined or fabricated?

Yes, 347/347F laminate is machinable using standard tools. It's recommended to use carbide-tipped tools for cutting and shaping to achieve precise dimensions and smooth finishes. Proper ventilation and dust collection are advised during machining to ensure safety and maintain air quality.

Related Information

1.       Common Preparation Methods

The preparation of 347/347F high-strength epoxy glass fabric laminate involves a meticulous process to ensure optimal performance in electrical insulation and mechanical strength applications. This laminate is crafted by impregnating alkali-free glass fiber cloth with a high-temperature-resistant benzoxazine resin, followed by a controlled hot-pressing procedure.

Initially, the alkali-free glass fiber cloth is selected for its superior electrical insulating properties and mechanical strength. This cloth serves as the reinforcement base for the laminate. The chosen benzoxazine resin, known for its high thermal stability, is then carefully impregnated into the glass fiber cloth. This impregnation process ensures that the resin thoroughly saturates the fibers, creating a uniform resin-fiber matrix.

Once the resin impregnation is complete, the resin-soaked glass fiber cloth is subjected to a hot-pressing process. During hot pressing, the material is placed between heated platens under controlled pressure and temperature conditions. This step facilitates the curing of the resin, transforming it from a liquid state into a solid, thermoset structure. The specific temperature and pressure parameters are carefully controlled to achieve the desired laminate thickness and to ensure the resin fully cures, thereby enhancing the laminate's mechanical and electrical properties.

The resulting 347/347F laminate exhibits excellent mechanical strength, electrical insulation capabilities, and resistance to high temperatures, making it suitable for various applications in electrical and mechanical systems.