FR4/G10 Sheet
Epoxy Sheet (also known as Epoxy Glass Fiber Sheet or 3240 Epoxy Sheet)
Epoxy sheet is a composite material made from epoxy resin and glass fiber cloth through high-temperature and high-pressure molding. It is widely used in modern industry and technology due to its excellent comprehensive properties, becoming a key material in the development of electronics, electrical, mechanical, and construction industries.
As a thermosetting composite material with epoxy resin as the matrix and glass fiber as the reinforcement, epoxy sheet forms a three-dimensional network structure through the cross-linking reaction between active epoxy groups and curing agents. It combines high strength, excellent insulation, and environmental resistance, providing reliable solutions for many fields.
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Product Information
“good abrasion resistance”
Product Display & Application
“corrosion resistance”
Industrial Manufacturing & Precision Machinery
Used for producing gears, bearings, and mold insulation boards. It features high strength and wear resistance, extending equipment service life.
Construction & Infrastructure
As a lightweight, high-strength material, it is used for structural reinforcement and sound and thermal insulation panels, enhancing project durability.
Raw Materials
Epoxy Resin: An organic polymer compound containing two or more epoxy groups. These active groups react with curing agents to form a three-dimensional network polymer that is insoluble and infusible.
Reinforcement Material: Commonly non-alkali glass fiber cloth, sometimes high-purity cellulose paper. Glass fiber cloth improves mechanical strength and dimensional stability.
Key Characteristics
Strong Adhesion: Epoxy resin contains polar hydroxyl and ether bonds, giving it strong adhesion to various materials. Its low curing shrinkage and minimal internal stress help enhance bonding strength.
Low Shrinkage: The curing reaction involves no volatile by-products, resulting in shrinkage of less than 2%.
Excellent Mechanical Properties: Cured epoxy resin has good mechanical strength and can withstand high pressure and impact.
Good Electrical Properties: High dielectric strength, surface leakage resistance, and arc resistance make it an excellent insulating material.
Strong Chemical Resistance: Offers excellent resistance to acids, alkalis, and solvents. Selecting specific resins and curing agents can enhance chemical stability.
Outstanding Dimensional Stability: The combination of various properties ensures long-term size and structural stability.
Mildew Resistance: The cured epoxy system resists most types of mold and can be used in harsh tropical conditions.
Specifications & Appearance
Thickness: Typically ranges from 0.5 mm to 100 mm
Standard Size: Usually 1000 mm × 2000 mm
Color: Commonly yellow
Application Fields
Aerospace: Used in aircraft, rockets, and satellites due to its high strength, corrosion resistance, low friction, and lightweight.
Electronics: A common base material for circuit boards with excellent insulation, mechanical strength, and high-temperature resistance, ideal for high-density circuits and miniature components.
Transportation: Used in tunnel linings for highways, subways, and railways to prevent water penetration and avoid geological hazards.
Petroleum Industry: Used as insulation material, liners, pump components, and other mechanical parts due to its wear resistance, corrosion resistance, and high strength.
Machinability
Epoxy sheets are easy to process and can be cut, drilled, punched, and milled into parts of various shapes and sizes to suit different applications. In electronics manufacturing, for example, epoxy sheets can be processed into specific insulating brackets, spacers, and other parts.
