XXX - Paper Phenolic, Electrical

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Key Characteristics of XXX Phenolic

Paper Phenolic (XXX) offers higher dielectric strength and mechanical performance compared to XX grade, making it ideal for more demanding electrical applications.

 

It is made from a higher-quality paper base and phenolic resin, which enhances its heat resistance, allowing it to perform at temperatures up to 350°F (177°C). This grade also provides superior moisture resistance, making it more reliable in humid or variable environments.

 

Paper Phenolic XXX is known for its excellent electrical insulation properties, combined with dimensional stability and moderate mechanical strength, making it suitable for both electrical and mechanical applications requiring precise performance.

 

Ready Plastics XXX Paper Phenolic is available in popular shapes including sheets and rods.

How Paper Phenolic (XXX) is Used:

Explore how this composite material is used across industries:

High-Voltage Insulators: With its superior dielectric strength, XXX phenolic is often used in high-voltage insulation applications.

 

Transformer Components: Its ability to withstand higher temperatures and provide excellent insulation makes it a perfect choice for transformer insulation parts.

 

Arc Chutes: The material’s ability to handle electrical arcing and high heat makes it suitable for arc chutes in electrical switchgear.

 

Electrical Busbars: Paper Phenolic XXX is used as insulation for busbars due to its high dielectric strength and durability under electrical load.

 

Terminal Blocks: The material’s combination of electrical insulation and machinability makes it ideal for terminal blocks that handle high voltage.

 

Power Distribution Equipment: XXX phenolic’s high dielectric properties make it a common material for insulation in power distribution and circuit protection systems.

Technical Specifications

Explore the mechanical and structural properties of Ready Plastic's XXX Paper Phenolic (electrical grade).

Military/Fed Spec: Mil-1-24768/10 Type PBE
Specific Gravity: 1.38
Tensile Strength (psi): 13,000
Comp. Strength: 35,000
Flexural Strength (psi): 22,000
Hardness, M Scale: 101
Bond Strength: 1,200
Shear Strength (psi): 12,800

Dissipation Factor, 10 cycles, Cond A: 0.035
Dielectric Constant 10 cycles, Cond A: 5.10
Electric Strength V/MIL Cond A: 700
Flammability Rating: 94HB
Max. Oper. Temp C/F: 140/284
Coeff. Thermal Exp. IN/IN/C x 10-5: 1.50
Water Absorption %-24 hrs: 0.57
Izod Impact Strength (ft/lb/in) @ 49 C: 0.55