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ISO9011 Standard Phenolic Cotton Rod 10-200mm OD For High Voltage Application
Product Overview
Phenolic Cotton Rods and Phenolic Paper Rods are engineered insulation materials manufactured from cotton cloth or paper impregnated with phenolic resin under high pressure and heat. These materials offer exceptional electrical insulation properties, mechanical strength, and thermal resistance for demanding high voltage applications.
Key Features
Low water absorption rate for stable performance in humid conditions
High mechanical strength with excellent tensile and flexural properties
Superior electrical performance in both dry and moist environments
High temperature resistance (B class 130°C)
Excellent dielectric properties and mechanical processing capabilities
Good surface hardness and abrasion resistance
Technical Specifications
Material: Phenolic resin + cotton fabric or paper Color Options: Brown, beige, yellow, red Surface Finish: Smooth Tensile Strength: 78 MPa Flexural Strength: 90-110 MPa Compression Strength: 138 MPa Breakdown Voltage: 10 KV Density: 1.25-1.40 g/cm³ Heat Resistance: B class 130°C Standard Sizes: OD 8-200mm * 1m length
Material Grades Comparison
Properties
Units
3723
3725
3726
Density
g/cm³
1.25-1.40
1.25-1.40
1.25-1.40
Water Absorption Rate (D-24/23)
%
≤1.7
≤1.2
≤1.0
Flexural Strength
MPa
≥90
≥110
≥95
Tensile Strength
MPa
≥78
-
-
Compression Strength (Axial)
MPa
≥138
≥138
≥138
Breakdown Voltage (in transformer oil)
KV
≥10
≥10
≥10
Applications
PCB fixtures and ICT fixtures
Pads for drilling machines
Gears, motors, generators, and transformers
Fixture inverters and switch components
Electrical insulation parts for various industrial equipment
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