Blog - JingHong

Glass Fiber Series

The Mechanical Strength of 3240 Epoxy Sheet Explained

James Yang

Aug 22, 2025

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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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Phenolic Series

NEMA CE Sheet Mechanical Strength Guide

Caroline Jia

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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Phenolic Series

Common Applications of Phenolic Cotton Sheet in Industry

Caroline Jia

Aug 21, 2025

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Phenolic Series

How Bakelite Sheet Is Made: Step-by-Step Process

Bakelite sheet manufacturing is a meticulous process that combines precision engineering with chemical expertise. The production begins with carefully selecting and mixing phenol and formaldehyde resins. These raw materials are then combined with reinforcing materials like paper or fabric layers. The mixture undergoes a controlled heating and pressing process, where it's subjected to high temperatures and pressures in specialized molds. This causes a chemical reaction called polymerization, transforming the liquid resin into a solid, durable material. The sheets are then cooled, trimmed, and finished to meet specific dimensional and surface requirements. Quality control measures ensure each Bakelite sheet meets rigorous standards for electrical insulation, heat resistance, and mechanical strength.

Caroline Jia

Aug 21, 2025

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