Semiconductor black crepe paper is one of the most critical functional solid insulation materials in power transformers, specifically designed to address electric field control and partial discharge issues in medium- and high-voltage electrical equipment. Its superior quality directly determines the long-term operational reliability and service life of the transformer.

Advantages of Semi-conductive Crepe Paper: Compared to ordinary crepe paper, semiconductor black crepe paper maintains excellent insulation performance while endowing the material with unique semi-conductive properties. Its key electrical performance—breakdown voltage (BDV)—is up to 80% higher than that of basic kraft paper. To achieve this superior quality, the product uses long fibers from pure wood pulp to manufacture the base paper, ensuring the material's inherent purity and mechanical toughness.

Main Technical Parameters:

Thickness: 0.05mm, 0.08mm, 0.13mm etc

Conductivity: Stable semiconductor properties, precisely controlled surface resistivity

Color: Standard black (for easy installation identification and quality control)

Product Characteristics

1. Electric Field Equalization and Control: The unique semi-conductive layer effectively evens out the electric field intensity between insulating layers, suppressing partial discharge and making it an ideal material for solving electric field concentration problems.

2. High Purity and High Oil Absorption: The material is pure, free of conductive impurities, and exhibits excellent wetting and oil absorption capabilities for insulating oils (mineral oil, silicone oil, ester oils, etc.).

3. Excellent Dielectric Strength: While providing semiconductor functionality, it maintains the inherent high dielectric strength of crepe paper.

4. Excellent Compatibility: Fully compatible with various insulating liquids (mineral oil, silicone oil, synthetic esters), maintaining long-term stability.

Semiconductor black crepe paper, by combining reliable mechanical adaptability, excellent insulation performance, and precise semiconductor functionality, has become an indispensable key material in the design of modern high-performance power equipment, providing a solid guarantee for improving the safety and lifespan of the entire power system.