2432 Alkyd Varnished Glass Cloth is a high-performance Class B (130°C) electrical insulation material. It is manufactured by impregnating electronic-grade alkali-free fiberglass cloth with oil-modified alkyd resin insulating varnish, followed by high-temperature baking and curing. This product perfectly combines excellent dielectric strength, outstanding mechanical durability, good moisture resistance, and long-term thermal stability. It is widely used in motors, transformers, and various electrical equipment as an ideal material for winding wrapping, slot insulation, interlayer insulation, and structural reinforcement.

Material and Process Characteristics

The base material of this product is E-glass fiberglass cloth, renowned for its excellent dimensional stability, high tensile strength, and superior toughness under thermal conditions. After impregnation with a specially formulated alkyd resin varnish and baking cure, a uniform, smooth yellowish-brown insulating coating is formed. This alkyd resin system achieves an optimal balance between flexibility and rigidity, allowing the material to wrap smoothly around complex coil shapes while providing sufficient structural hardness to meet rigid insulation requirements.

Main Technical Specifications

Product Model: 2432 Alkyd Varnished Glass Cloth

Heat-resistance: Class B (130°C)

Standard Thickness: 0.08 mm, 0.10 mm, 0.11 mm, 0.123 mm, 0.15 mm, 0.17 mm, 0.20 mm, 0.25 mm

Common Widths: 15 mm, 20 mm, 25 mm, 50 mm, 1000 mm, 1200 mm, etc.

Dielectric Strength: Breakdown voltage under normal conditions > 5.0~9.0 kV/mm, specific range approximately 5-10 kV (depending on thickness)

Mechanical Properties of 2432 Alkyd Varnished Glass Cloth:

Tensile Strength (Warp direction): approx. 65-130 N/15 mm

Tensile Strength (Weft direction): approx. 45-98 N/15 mm

Standard Compliance: JB/T 8148.1-1991

Electrical Performance Advantages

2432 Alkyd Varnished Glass Cloth provides stable and reliable electrical insulation performance under both ambient and elevated temperatures. Its key advantages include:

• High Dielectric Strength: Suitable for demanding applications such as slot insulation, interlayer insulation, and coil wrapping.

• Low Dielectric Loss: Suitable for general AC and DC electrical applications.

• Stable Insulation Resistance: Maintains good insulation properties even in humid or oil-immersed environments.

• Excellent Thermal Aging Performance: Retains high dielectric strength after long-term operation at high temperatures.

Typical Application Fields

This product is specifically designed for motors and electrical appliances utilizing Class B insulation systems. Its primary applications include:

1. Coil insulation and wrapping for various motors and transformers.

2. Slot insulation (slot liners) for motors.

3. Interlayer and phase insulation in electrical equipment.

4. Insulation for structural components requiring mechanical reinforcement.

With its well-balanced comprehensive performance, 2432 Alkyd Varnished Glass Cloth is a trusted classic choice in the field of industrial electrical insulation.