Phenolic Paperboard: The Reliable Backbone of Electrical Insulation

Various grades of Phenolic Paperboard insulation sheets in brown and black colors - RDS Composite

Phenolic paperboard remains an essential insulation composite material in the modern power and electronics industries. By combining high-quality wood pulp with advanced phenolic resin, this material provides a stable and cost-effective solution for diverse technical applications.

Key Technical Specifications

The performance of phenolic paperboard is defined by its rigorous manufacturing process. At RDS, our products adhere to the GB/T 1303.1-2009 standard, ensuring reliable quality for every batch.

  • Temperature Resistance: Stable performance between 105°C and 120°C.
  • Mechanical Strength: High arc resistance and tough texture suitable for stamping and drilling.
  • Material Base: Premium wood pulp or sulfate paper base.

Industrial Applications

Since its mass production in the 1920s, phenolic paperboard has evolved into a versatile material used across multiple sectors:

  • Power Sector: Used for insulation partitions and terminal block gaskets in transformers and switchgear.
  • Electronics: Serves as a reliable packaging substrate and insulation support for small components.
  • Mechanical Engineering: Ideal for wear-resistant gaskets and insulation bushings in machine tools.

Why Choose RDS Phenolic Solutions?

As a professional supplier of electrical insulation materials, RDS offers both standard and modified phenolic paperboards. Our modified options—including those with glass fiber or flame retardants—are optimized for the demanding environments of new energy and rail transit.

Ready to enhance your equipment's insulation performance? Contact RDS for a Custom Quote or explore our full range of Mica and Composite products.