Electrical laminated board

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Phenolic Paperboard

Phenolic paperboard is board-like laminated products made of insulating impregnated paper and phenolic resin with strong mechanical and dielectric performances.

Description of Phenolic Paperboard

Phenolic paperboard is made of insulating impregnated paper soaked in phenolic resin by baking and hot pressing. It possesses high mechanical and dielectric property, excellent moisture, heat and acid resistance. The insulation class is E class and the main color is red and coffee.

Application of Phenolic Paperboard

Suitable for insulating structural spares in motors and electrical equipments with high mechanical performance requirements and can be used in transformer oil.

Advantage of Phenolic Paperboard

Phenolic paperboard produced, by ZTelec Group using high-quality insulating impregnated paper and phenolic resin as raw materials, can always maintain its structural integrity and dimensional stability even at extreme high temperature. Ztelec Group adopts advanced mechanical processing technology and this product has the advantages of smooth surface, neat cutting edge, uniform appearance and color and reliable quality. The mechanical and electrical properties of products are superior to the similar one of other companies. Its quality is recognized by domestic and foreign large enterprises such as Lens Technology in China and Schneider Electric and sold overseas such as European and American areas.

Property Parameter of Phenolic Paperboard (Refer to 3021 PFCP202)

Executive Standard: GB-T 1303-2009 - IEC60893-2004

Number Item Unit Value
1 Density g/cm3 1.25-1.4
2 Water Absorption(Thickness:1-20mm) mg 180-970
3 Flexural Strength at Perpendicular Lamination MPa ≥120
(Under Normal)
4 Dielectric Strength at Perpendicular Lamination(Transformer Oil at 90℃)(Thickness:1mm) KV/mm ≥15.8
5 Breakdown Voltage at Parallel Lamination KV ≥35
(Transformer Oil at 90℃)
6 Dielectric Constant(50Hz) - ≤5.5
7 Proof Tracking Index (PTI) - ≥100
8 Thermal Index - 120

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