What is the main material of porcelain insulators?
Release Date:
2025-08-18
High-purity alumina: As the core component, its content can reach 75%-99.9%. The higher the purity, the stronger the insulation performance. For example, corundum porcelain with 99.9% purity has performance close to that of sapphire single crystals.
The main materials of porcelain insulators are high-purity alumina, zirconia, and other electrical ceramic materials.
Material Characteristics
High-purity alumina: As the core component, its content can reach 75%-99.9%. The higher the purity, the stronger the insulation performance. For example, corundum porcelain with 99.9% purity has performance close to that of sapphire single crystals.
Zirconia: Often used in combination with alumina to enhance mechanical strength and heat resistance.
Process Features
Porcelain insulators are made through processes such as crushing, molding, and sintering. The surface is often coated with ceramic glaze to improve waterproofness and smoothness, further enhancing mechanical strength.
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