Blog - JingHong

Glass Fiber Series

3240 Epoxy Sheet Chemical Resistance Guide

James Yang

Sep 10, 2025

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Glass Fiber Series

The Difference Between FR4 Epoxy Sheet and Other Laminate Boards

James Yang

Sep 10, 2025

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Glass Fiber Series

Why FR4 Epoxy Sheet Is the Industry Standard for PCB Boards?

James Yang

Sep 10, 2025

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Glass Fiber Series

FR4 Epoxy Sheet Moisture Absorption and Stability

FR4 epoxy sheets are renowned for their exceptional moisture resistance and dimensional stability, making them a cornerstone material in the electronics industry. These fiberglass-reinforced epoxy laminates exhibit remarkably low water absorption rates, typically less than 0.1% after 24 hours of immersion. This impressive moisture resistance stems from the tightly cross-linked epoxy resin matrix and the hydrophobic nature of the glass fibers. The material's ability to maintain its electrical and mechanical properties in humid environments ensures the reliability and longevity of printed circuit boards (PCBs) and other electronic components. Understanding the nuances of FR4's moisture absorption characteristics is crucial for engineers and manufacturers seeking to optimize their product performance and durability.

James Yang

Sep 10, 2025

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Glass Fiber Series

Comparing 3240 Epoxy Sheet to Other Epoxy Laminates

James Yang

Sep 9, 2025

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Glass Fiber Series

The Manufacturing Process of G10 Epoxy Sheet

James Yang

Sep 9, 2025

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Glass Fiber Series

FR4 Epoxy Sheet Density and Its Importance in Engineering

FR4 epoxy sheet density plays a crucial role in engineering applications, particularly in the realm of printed circuit boards (PCBs) and electronic components. With a typical density ranging from 1.80 to 1.91 g/cm³, FR4 offers an optimal balance between weight and performance. This density contributes significantly to the material's strength, thermal properties, and electrical insulation capabilities. Understanding the importance of FR4 density is essential for engineers and designers, as it directly impacts the material's behavior in various applications, from aerospace to consumer electronics. The density of FR4 epoxy sheets influences their mechanical strength, thermal conductivity, and overall durability, making it a critical factor in the design and manufacturing of reliable, high-performance electronic systems.

James Yang

Sep 9, 2025

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Glass Fiber Series

3240 Epoxy Sheet Testing Standards You Should Know

3240 epoxy sheets are crucial components in various industries, renowned for their exceptional electrical insulation and mechanical properties. To ensure these sheets meet the stringent requirements of their applications, a comprehensive set of testing standards has been established. These standards encompass mechanical, electrical, and thermal properties, as well as environmental resistance. Key tests include dielectric strength, tensile strength, flexural strength, and thermal conductivity. Manufacturers and end-users must adhere to these standards to guarantee the reliability and performance of 3240 epoxy sheets in critical applications such as electrical insulation, circuit boards, and high-temperature environments. Understanding these testing standards is essential for quality control, product development, and ensuring the safety and efficiency of systems utilizing 3240 epoxy sheets.

James Yang

Sep 9, 2025

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Glass Fiber Series

How to Identify High-Quality FR4 Epoxy Sheet?

James Yang

Sep 9, 2025

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