Densified Laminated Wood Board For Transformer

Densified Laminated Wood Board For Transformer

Electrical Densified Wood Board is an advanced engineered composite material manufactured by impregnating selected natural woods (such as birch or maple) with high-grade synthetic resins and subsequently curing under precisely controlled high temperature and pressure. This process transforms the wood into a superior material that harmoniously combines the favorable lightweight nature of wood with the enhanced durability, mechanical strength, and electrical insulation properties of polymers.

Characteristics & Advantages

• Excellent Electrical Insulation: Exhibits high dielectric strength (typically ≥20 kV/mm) and low dielectric loss, making it an ideal choice for high-voltage insulation applications.

• Superior Mechanical Properties: Offers high compressive strength (≥80 MPa) and flexural strength (≥100 MPa), ensuring reliable performance under significant mechanical stress, impact, and vibration.

• Outstanding Environmental Resistance: Features exceptional thermal stability (continuous service up to 180°C), moisture resistance, and chemical resistance against oils, weak acids, and bases.

• Excellent Machinability: Can be precisely machined using standard woodworking or light metalworking tools—easily cut, drilled, tapped, or milled into complex shapes and tight tolerances to meet specific design requirements.

Density is a critical determinant of the board's mechanical and electrical performance, guiding its optimal application.
1. Standard 1.2 – 1.4g/cm³ is  Lightweight with reliable insulation. Ideal for low to medium-voltage insulating components such as transformer spacer pads, where dielectric strength ≥15 kV/mm is required.

2. High-Density  1.4 – 1.6g/cm³  Enhanced strength and stability. Compressive strength ≥120 MPa. Perfect for load-bearing insulating parts like motor slot wedges, and for components in high-frequency vibration environments (e.g., switchgear operating mechanism brackets).

Applications of Densified Wood Board:

Electrical Densified Wood Board is extensively utilized across various industries:

Transformers: As insulating support bars to prevent winding deformation, and as end rings or spacer pads (dielectric strength ≥25 kV/mm) to isolate windings.

High-Voltage Switchgear: For insulating barriers/partitions to block arcs and phase separation (temperature resistance ≥155°C), and for sturdy operating mechanism brackets.

Specialized Industrial & High-Tech Fields: Serves as a versatile material for jigs, fixtures, and insulating structural components in applications ranging from rail transportation to demanding military and aerospace systems.