Blog - JingHong

Glass Fiber Series

How 3240 Epoxy Sheet Performs in High-Humidity Environments?

3240 epoxy sheet exhibits exceptional performance in high-humidity environments, making it a top choice for applications where moisture resistance is crucial. This advanced material combines the strength of fiberglass with the durability of epoxy resin, resulting in a composite that maintains its mechanical and electrical properties even when exposed to elevated humidity levels. The sheet's low water absorption rate, typically less than 0.1%, ensures minimal dimensional changes and preserves its insulation characteristics. Additionally, its closed-cell structure prevents moisture ingress, safeguarding internal components in electrical and electronic systems. This remarkable humidity resistance, coupled with its high dielectric strength and thermal stability, positions 3240 epoxy sheet as an ideal solution for industries operating in challenging, moisture-rich environments.

James Yang

Aug 22, 2025

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Glass Fiber Series

G10 Epoxy Sheet Key Mechanical Properties Explained

James Yang

Aug 22, 2025

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Glass Fiber Series

What Is 3240 Epoxy Sheet? Full Material Overview

James Yang

Aug 22, 2025

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Glass Fiber Series

Common Applications of G10 Epoxy Sheet in Industry

James Yang

Aug 22, 2025

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Glass Fiber Series

G10 Epoxy Sheet Electrical Insulation Performance

James Yang

Aug 21, 2025

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Glass Fiber Series

FR4 Epoxy Sheet Temperature Resistance Explained

James Yang

Aug 21, 2025

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Glass Fiber Series

The Role of FR4 Epoxy Sheet in Electrical Insulation

FR4 epoxy sheet plays a pivotal role in electrical insulation, serving as the backbone of modern electronics. This versatile material combines exceptional electrical properties with mechanical strength, making it indispensable in printed circuit boards (PCBs) and various high-voltage applications. FR4's unique composition of fiberglass reinforced epoxy resin provides superior dielectric strength, low moisture absorption, and excellent thermal stability. These characteristics enable FR4 to effectively isolate conductive components, prevent electrical leakage, and maintain signal integrity in complex electronic systems. From consumer electronics to industrial equipment, FR4 epoxy sheet's reliable insulation properties ensure the safe and efficient operation of countless devices we rely on daily.

James Yang

Aug 21, 2025

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Glass Fiber Series

How FR4 Epoxy Sheet Is Manufactured: Step-by-Step Process

FR4 epoxy sheet manufacturing is a meticulous process involving several key stages. The production begins with selecting high-quality raw materials, including glass fiber cloth and epoxy resin. These materials are carefully combined through impregnation, where the glass cloth is saturated with the epoxy resin. The impregnated layers are then stacked and subjected to precise heat and pressure in a lamination process. This is followed by a crucial curing phase, allowing the epoxy to set and achieve its characteristic properties. The sheets then undergo rigorous quality control measures before being cut and finished to customer specifications. This intricate process ensures the FR4 sheets possess the optimal balance of electrical insulation, mechanical strength, and flame retardancy required for diverse applications in electronics and beyond.

James Yang

Aug 21, 2025

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Glass Fiber Series

How FR4 Epoxy Sheet Performs Under High Voltage?

James Yang

Aug 21, 2025

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