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Material

Carbon Fiber

Carbon Fiber is selected from its stiffness, recovery, wear, wet-service, chemical, and temperature behavior. Do not select stiffness from the material name alone. Specify filament diameter, free trim, density, grade, and service conditions as one set.

Carbon Fiber

Material Overview

Carbon fiber is a high-carbon filament material with electrical conductivity, low thermal expansion and resistance to many acids, alkalis, salts and solvents.

In a finished brush, Carbon Fiber does not create a fixed stiffness by itself. Brush force and recovery come from the complete filament geometry and contact setting, not just the polymer name. Service conditions must also be considered.

Material Properties

Fiber diameter5–10 µm
Density1.75–1.95 g/cm³
Electrical resistivityabout 1.5–2.0 × 10⁻⁵ ohm·m
Use temperatureup to 150–200°C in polymer-bound brushes
Surface resistance10²–10⁶ ohms in grounded brush assemblies

Brush Applications

For Carbon Fiber, directly related brush structures include Roller and Conveyor Brushes and Handheld Detail Brushes. Applications related to Carbon Fiber include Dust Removal, Connector & Slot Cleaning, PCB Cleaning, and Printer & Scanner Cleaning.

Specification and Customization

Material form

Filament Bundle / Tuft

Common forms

Continuous carbon filament bundle; conductive tuft; carbon-fiber strip or roller fill.

Grade

Conductive carbon-fiber brush grade

Reference standard

ASTM D3039/D3039M; ISO 14125; ISO 10618; IEC 61340-5-1:2024; IEC TS 61340-5-4:2021; ASTM D257

Limitations and Alternatives

Brittle fiber fragments, conductive contamination and incomplete grounding can make carbon fiber unsuitable for exposed electronics or cleanliness-critical areas.

Frequently Asked Questions

What are the key properties of Carbon Fiber brush material?

Carbon fiber is a high-carbon filament material with electrical conductivity, low thermal expansion and resistance to many acids, alkalis, salts and solvents. Direct data: Fiber diameter: 5–10 µm; Density: 1.75–1.95 g/cm³; Electrical resistivity: about 1.5–2.0 × 10⁻⁵ ohm·m; Use temperature: up to 150–200°C in polymer-bound brushes; Surface resistance: 10²–10⁶ ohms in grounded brush assemblies.

Where is Carbon Fiber used in cleaning brushes?

Grounded static-removal strips and precision contact on films, optics and electronics where very fine conductive fibers are required.

How does filament geometry change Carbon Fiber brush stiffness?

Carbon Fiber changes brush stiffness through filament diameter, free trim, density, crimp, and contact. Use finer filament and longer trim for conformable contact; use coarser filament, shorter trim, or higher density for stronger displacement or cutting.

When should Carbon Fiber be replaced by another material?

Compare Carbon Fiber with Conductive nylon, anti-static filament, stainless micro-wire, standard nylon. Change material when wet stiffness, temperature, chemical resistance, conductivity, particle shedding, or surface marking becomes the limiting factor.

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