An anionic polyether-polyurethane film former for continuous and chopped carbon fiber, virgin or recycled, at high stiffness, 12 MPa at 100 percent modulus and 220 percent elongation, with very good abrasion resistance and electrostatic dissipation. 31 percent solids.
FILCO D2594 is an anionic polyether-polyurethane waterborne dispersion used as a film former for continuous and chopped carbon fiber sizing, virgin or recycled. COIM publishes it at 31 percent solids and pH 8.0.
Its dried film is the high-stiffness member of the polyether pair. At 12 MPa 100 percent modulus, 24 MPa tensile strength and 220 percent elongation at break on ASTM D1708, it holds a compact, well-consolidated bundle that presents once to a cutting edge. COIM lists high stiffness, very good abrasion resistance and high strand and tow integrity that is still easy to disperse and wet during application.
The polyether backbone is the hydrolysis-resistant choice. A polyester polyol hydrolyzes in sustained wet heat, and the polyether route is how the family answers that without giving up film stiffness.
The anionic dispersion is published for enhanced electrostatic dissipation, high shear stability and compatibility with anionic or non-ionic bath additives. The matrix side is nylon, polyurethane and polycarbonate.
It is also written as FILCO FD2594, FD2594, D2594 sizing, anionic polyurethane dispersion, polyether polyurethane film former, and high stiffness carbon fiber sizing.
| Property | Typical value |
|---|---|
| Appearance | Opalescent liquid |
| Solid content | 31 percent |
| pH | 8.0 |
| 100 percent modulus | 12 MPa, ASTM D1708 |
| Tensile strength | 24 MPa, ASTM D1708 |
| Elongation at break | 220 percent, ASTM D1708 |
| Dispersion type | Anionic |
| Backbone | Polyether-polyurethane |
| Fibers | Carbon, virgin or recycled, continuous or chopped |
Typical values from the manufacturer's technical data sheet. They describe the product, they are not a specification. We will send the current TDS and the batch documentation your qualification needs.
Tell us the binder system, the property you are targeting, and the volume you expect. We will confirm the grade, send the documentation, and get a sample of the candidate grade to you.
A stiff film holds a compact bundle that cuts cleanly and feeds evenly through loss-in-weight dosing.
Published for virgin or recycled fiber. Reclaimed fiber needs a film that restores bulk density and flow.
High compatibility with nylon, polyurethane and polycarbonate matrices.
The polyether backbone resists hydrolysis where a polyester grade would not.
Anionic electrostatic dissipation plus high tow integrity work on loose filament from two directions.
It is specified where the formulation needs high stiffness, 12 MPa at 100 percent modulus, polyether backbone for hydrolysis resistance, very good abrasion resistance, anionic, with enhanced electrostatic dissipation for chopping and converting lines, and published for virgin or recycled carbon fiber.
Applied at the fiber line or in a re-sizing bath. The anionic dispersion is published with high shear stability and is compatible with anionic or non-ionic additives. Confirm compatibility before adding a cationic component.
Selection runs matrix first, then stiffness. FILCO D2594 is the stiff polyether grade. Its sibling D2596 is the same chemistry at moderate stiffness, 9 MPa, and D2476 goes stiffer still at 20 MPa on a polycarbonate backbone.
The film is thermoplastic and non-reactive. Where the process should crosslink the film, look at the reactive polyurethane family instead.
Package sizes: Made to order in the pack size the line needs. Tell us the volume and we will confirm..
Storage: Store in closed containers away from direct sun at 41 to 86 degrees F. Maximum suggested storage is 12 months from production in the original package, after which the product must be rechecked. Freezing destroys the dispersion permanently.
Not classified as dangerous under Regulation EC 1272/2008 (CLP) and not regulated for transport. Read the safety data sheet before handling. We supply the current SDS with every shipment in the manufacturer's current revision.
Stiffness. Both are anionic polyether-polyurethanes published for continuous and chopped carbon fiber, virgin or recycled. D2594 is the high-stiffness grade at 12 MPa 100 percent modulus and 220 percent elongation, D2596 the moderate one at 9 MPa and 320 percent.
Hydrolysis resistance. Polyester polyols break down in sustained wet heat, and the polyether route holds up where the sized fiber or the compound sees moisture.
Yes. COIM publishes it for continuous and chopped carbon fiber, virgin or recycled. Reclaimed fiber comes out of pyrolysis bare, and a stiff film restores the bundle integrity and bulk density that feeding needs.
The dispersion is published with enhanced electrostatic dissipation, which bleeds off the charge that makes loose carbon filament fly, cling and bridge. The high tow integrity limits how much loose filament forms in the first place.
Yes. Tell us the fiber, the matrix, the cutter and the failure mode, and we will send the current technical data sheet with the matching safety data sheet and arrange sample material for the trial.
Yes. We send the Technical Data Sheet (TDS) and Safety Data Sheet (SDS) on request, in the manufacturer's current revision. Use Request TDS or SDS above and tell us what your qualification review needs.
The same polyether chemistry at moderate stiffness, 9 MPa at 320 percent elongation.
The stiffest grade with a current data sheet, 20 MPa on a polycarbonate backbone.
The full published roster with film stiffness on every grade.
The very stiff modified epoxy for PPS and PEEK, where the matrix is not a polyurethane question.
What a film former does in a sizing, and how the chemistries divide.
What film stiffness does to cutting force, fuzz and blade wear on a converting line.
What pyrolysis strips and what the re-size has to restore.
