Semi-conductive Insulation Crepe Paper(Black)

Semi-conductive Insulation Crepe Paper(Black)

Semi conductive black crepe paper is a specially treated electrical insulation material. Based on high-quality electrical insulating crepe paper, it is endowed with stable and controllable semiconducting properties (surface resistivity typically in the range of 10³ ~ 10⁹ Ω) through impregnation or coating processes. Its black appearance facilitates identification and quality control during production. Its flexible and stretchable properties make it ideal for complex geometries, such as lead wrapping, the edges of wire coils, and sleeve cores.

Characteristics of Black Insulation Crepe Paper:

1. Controllable Semiconductivity: The material surface has a uniform and stable medium resistivity; it is neither an insulator nor a good conductor. It allows minute currents to pass through, thereby balancing the potential difference between different insulation layers or components and preventing charge accumulation.

2. Excellent Electric Field Homogenization Capability: This is its most important function. In high electric field regions (such as conductor edges, insulation layer interfaces, and near impurities), it smooths the electric field gradient, eliminates electric field distortion, and disperses concentrated electric field intensity, thus fundamentally suppressing the generation of partial discharge.

3. Superior Insulation and Mechanical Foundation: Inheriting all the advantages of high-quality crepe paper: high-purity cellulose fibers, high dielectric strength, good flexibility, high oil absorption (completely compatible with transformer oil), and excellent tear resistance and ductility, allowing it to tightly adhere to irregular surfaces.

Semi-conductive black crepe paper transcends the scope of traditional insulating materials, becoming an active and functional advanced material. It is not only an insulator but also a "manager" of the electric field. As the electrical insulation industry trends towards higher voltage levels, more compact designs, and higher reliability, semiconductor black crepe paper, with its superior electric field control capabilities and flexible process adaptability, is playing an increasingly crucial role.