Material
Carbon Fiber
Conductive carbon filament
Carbon fiber brush fill is made of extremely fine, highly conductive carbon fibers, about 5–10 µm across. Grounded, it removes static charge very effectively from film, paper, webs, optics and electronics, often without touching. Its fibers are brittle and conductive, so loose fragments have to be kept away from exposed electronics.
Datasheet values
- 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
What is carbon fiber brush fill?
Fibers of nearly pure carbon, 5–10 µm across, with a density of 1.75–1.95 g/cm³ and an electrical resistivity of about 1.5–2.0 × 10⁻⁵ ohm·m. In a grounded brush assembly, surface resistance is typically 10²–10⁶ ohms. Carbon fiber also resists many acids, alkalis, salts and solvents.
How does a carbon fiber static brush work?
Its very fine tips concentrate the electric field from a charged surface. Close to or touching the surface, the tips discharge it through the grounded holder. That is why carbon fiber static eliminators work on fast-moving film, paper and webs, and on panels and optics, where a soft, non-marking touch matters.
Where is it used?
In our range: anti-static carbon fiber brushes and strips, ESD static control brushes, anti-static packaging and printing brushes, conductive film web cleaning brushes, carbon fiber panel cleaning brushes, a 50 mm carbon fiber static wheel and a 150 mm carbon fiber wafer equipment disc.
How hot can it run?
Carbon fiber itself takes high heat, but the binder, holder and grounding hardware set the brush limit. With a high-temperature holder and binder, up to about 200°C is cited; polymer-bound brushes are typically 150–200°C.
Where does carbon fiber fall short?
The fibers are brittle, so fragments can break off, and they are conductive, so loose fragments can short exposed electronics or contaminate clean areas. Incomplete grounding defeats the purpose. Where fragments are a concern, conductive nylon or dissipative filament is the safer choice.
What should you tell us?
The material and speed of the web or part, contact or near-contact, the holder length and fitting, the ground point, and any cleanliness requirement.
Questions buyers ask about Carbon Fiber
How does a carbon fiber static brush work?
Its extremely fine tips concentrate the charge from a nearby surface and discharge it through the grounded holder, often without needing to press on the surface.
Does a carbon fiber static brush have to touch the material?
Not always. Close to the surface, the tips can discharge it; light contact is also used. The holder must be grounded either way.
Is carbon fiber safe near exposed electronics?
With care. The fibers are brittle and conductive, so fragments can cause shorts. Where that matters, conductive nylon or dissipative filament is safer.
Where these figures come from
| Property | Published value | Source |
|---|---|---|
| Chemical resistance | Resistant to many acids, alkalis, salts, and solvents, with finished performance controlled by surface sizing and holder resin. | Toray Composite Materials America Retrieved 2026-07-20 |
| Published datasheet figures |
|
Toray Composite Materials America Retrieved 2026-07-20 |
| Hardness and stiffness | High axial modulus at the fiber level, but a brush tuft flexible because its filaments are extremely fine and unsupported. | Toray Composite Materials America Retrieved 2026-07-20 |
| Limitations | Brittle fiber fragments, conductive contamination and incomplete grounding can make carbon fiber unsuitable for exposed electronics or cleanliness-critical areas. | Toray Composite Materials America Retrieved 2026-07-20 |
| Temperature resistance | Up to 200°C with a high-temperature holder and binder. | Toray Composite Materials America Retrieved 2026-07-20 |
| Water resistance | Low water sensitivity of the carbon fiber does not remove the need to Test bonding and electrical contact in wet service. | Toray Composite Materials America Retrieved 2026-07-20 |
Guides that go deeper on this
How to Choose Composite Edge Deburring Brush
Read this guideGuideCarbon Fiber Brush: Material and Size for Static-Sensitive Parts
Read this guideGuideConductive Nylon vs Carbon Fiber Brush: Which Fits Best?
Read this guideGuideHow to Choose Carbon Fiber Brush for PCB Dust Removal
Read this guideGuideWhen to Use a Carbon Fiber Anti-Static Brush on PCB Dust
Read this guideContinue Exploring
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Dust is moved, not dissolved, so the brush is chosen by what the dust is. Fine dense nylon or goat hair lifts fine dust without spreading it.
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Connector & Slot Cleaning
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PCB Cleaning
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See the cleaning jobCustom Manufacturing RFQ
Discuss This Material
Share what the brush works on, the temperature and chemicals it meets, the form you need — strip, disc, roller or hand brush — the quantity and a drawing or photo.
We reply to every request within 24 hours, with a quotation or with the questions we need answered first. If the brush can be made on our existing tooling, we make the sample directly. If it needs new tooling, we quote a sample fee and a tooling fee, and the sample fee is credited against the bulk order. Need an NDA first? We sign yours before you send drawings, and the files you send are never shown to other customers.
- MOQ500 pcs for small hand-held brushes, 100 pcs for medium and large ones
- SampleTypically 3–7 days
- ProductionFrom 7 days after sample approval, by size and quantity
- Payment30% deposit and 70% before shipment above US$10,000; smaller orders on agreed terms
“We need a brush to remove wet residue from a stainless steel conveyor, about 800mm wide. The current brush wears quickly. We can send photos.”
“We sell drinkware and need a cleaning brush to include with the product. Quantity around 5,000 pieces.”