Product Presentation:3240 epoxy board is a high-performance electrical insulation material made from fiberglass cloth and epoxy resin, laminated under high temperature and pressure. It is widely used in lithium-ion battery systems due to its excellent dielectric strength, thermal stability, and mechanical durability.

This material is especially suitable for battery pack insulation, module structures, and high-voltage protection components in EV and energy storage systems.

Product Performance:

High dielectric strength

Excellent mechanical rigidity

Good heat resistance

Low water absorption

Strong resistance to chemicals and aging

Key Features for Lithium-Ion Battery Applications
1. Excellent Electrical Insulation

3240 epoxy board provides stable insulation performance under high voltage, ensuring safety in battery modules and energy storage systems.

2. High Mechanical Strength

The material maintains structural integrity under pressure and vibration, making it ideal for EV battery packs and industrial battery systems.

3. Heat Resistance & Thermal Stability

With good heat resistance, 3240 insulation boards can operate reliably in elevated temperature environments typical in lithium battery systems.

4. Flame Retardant & Safety Performance

Suitable grades can meet flame-retardant requirements, improving safety in battery applications.

5. Precision Machinability

Compatible with CNC machining, allowing custom shapes such as:

Insulation spacers

Battery separators

Structural supports

Protective barriers

Applications in Lithium Battery Industry

SJ’s abilities:

CNC cutting & milling

Drilling & tapping

Engraving & slotting

Precision shaping

Tolerance: ±0.05mm (depending on design)
Surface: Smooth / Polished / Custom

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