Blog - JingHong

Glass Fiber Series

How to Store and Handle FR4 Epoxy Sheets for Long-Term Use Without Performance Loss?

James Yang

Jun 24, 2025

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Glass Fiber Series

Does FR4 Laminate Epoxy Sheet Belong to Composite Material?

James Yang

Jun 23, 2025

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Glass Fiber Series

What are the Specific Uses of FR4 Epoxy Board?

FR4 epoxy board, also known as 3240 epoxy sheet or 3240 epoxy board, is a versatile material with numerous applications across various industries. This flame-retardant, glass-reinforced epoxy laminate is prized for its exceptional electrical insulation properties, mechanical strength, and thermal stability. FR4 Epoxy Board finds extensive use in printed circuit boards (PCBs) for electronic devices, electrical insulation in industrial equipment, and structural components in aerospace and automotive sectors. Its ability to maintain performance under high temperatures and humid conditions makes it indispensable in telecommunications infrastructure, medical devices, and renewable energy systems. The specific uses of FR4 Epoxy Board showcase its adaptability and reliability in meeting diverse engineering challenges.

James Yang

Jun 23, 2025

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Glass Fiber Series

Do you Know What is the Difference Between Fiberglass Board, FR4 Epoxy Board, and Fiberboard?

Fiberglass board, FR4 epoxy board, FR4 sheet, and fiberboard are all insulating materials used in various industries, but they have distinct characteristics and applications. Fiberglass board is made from glass fibers and resin, offering excellent electrical insulation and heat resistance. FR4 epoxy board, a type of fiberglass reinforced epoxy laminate, and its commonly used form, the FR4 sheet, are widely used in printed circuit boards due to their superior electrical properties and flame resistance. Fiberboard, on the other hand, is made from wood fibers and is primarily used in construction and furniture manufacturing. While all three materials provide insulation, their composition, properties, and applications differ significantly, making each suitable for specific purposes in industries ranging from electronics to construction.

James Yang

Jun 23, 2025

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Glass Fiber Series

Three Common FR4 Epoxy Sheet Processing Methods

FR4 epoxy sheets, also known as FR4 epoxy boards, are versatile materials widely used in the electronics industry. These flame-retardant composite materials offer excellent electrical insulation properties and mechanical strength. When it comes to processing FR4 sheets, manufacturers employ various techniques to shape and modify these materials for specific applications. In this comprehensive guide, we'll explore three common FR4 epoxy sheet processing methods: machining, lamination, and chemical etching. Each of these methods offers unique advantages and is suited for different applications in the production of printed circuit boards (PCBs) and other electronic components. By understanding these processing techniques, manufacturers can optimize their production processes and achieve the desired results for their FR4-based products.

James Yang

Jun 23, 2025

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Glass Fiber Series

FR4 Board: Composition, Characteristics, and Applications

James Yang

Jun 20, 2025

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Glass Fiber Series

FR4 Materials in PCB Application and Advantages

FR4 materials have become indispensable in the world of Printed Circuit Boards (PCBs), revolutionizing the electronics industry with their exceptional properties. These fiberglass-reinforced epoxy laminates, commonly known as FR4 sheets or FR4 epoxy boards, offer a perfect balance of electrical insulation, mechanical strength, and thermal stability. In PCB applications, FR4 materials serve as the foundation for circuit designs, providing a reliable substrate for mounting components and creating intricate conductive pathways. The advantages of FR4 in PCBs are numerous, including excellent dielectric properties, low moisture absorption, and high temperature resistance. These characteristics make FR4 epoxy sheets the go-to choice for a wide range of electronic devices, from consumer electronics to aerospace applications, ensuring optimal performance and longevity in diverse operating conditions.

James Yang

Jun 20, 2025

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Glass Fiber Series

Specific Heat of FR4: Insights into Thermal Performance

When it comes to understanding the thermal performance of FR4 sheets, FR4 epoxy sheets, and FR4 epoxy boards, the specific heat capacity plays a crucial role. This property determines how much heat energy is required to raise the temperature of the material by one degree Celsius. For FR4, the specific heat capacity typically ranges from 0.6 to 1.2 J/g·K, with an average value of around 0.9 J/g·K. This moderate specific heat capacity contributes to FR4's thermal stability, making it an excellent choice for applications where consistent performance under varying temperatures is essential. Understanding this characteristic helps engineers and designers optimize their use of FR4 materials in electronic components, circuit boards, and insulation applications, ensuring optimal thermal management and overall product reliability.

James Yang

Jun 20, 2025

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Glass Fiber Series

Application of 3240 Epoxy Sheet in Lithium Battery

The 3240 epoxy sheet plays a crucial role in the manufacturing and performance of lithium batteries. This high-performance material serves as an excellent insulator and structural component within battery cells. Its superior electrical insulation properties, coupled with remarkable mechanical strength and thermal stability, make it an ideal choice for battery separators and internal components. The 3240 epoxy board enhances the overall safety, efficiency, and longevity of lithium batteries by providing a reliable barrier between electrodes, preventing short circuits, and maintaining structural integrity under various operating conditions. As the demand for advanced energy storage solutions continues to grow, the application of 3240 epoxy sheet in lithium batteries remains indispensable for achieving optimal performance and safety standards in this rapidly evolving industry.

James Yang

Jun 19, 2025

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