C-400Ultra-Fine Micronised Glass Flake for Primers & High-Gloss Finishes
C-400 is our finest micronised C-glass flake, engineered for pigment-like dispersibility. The small particle size unlocks thin-film (75–150 μm DFT) barrier coatings, anti-corrosion primers, and high-gloss decorative topcoats while retaining the moisture- and chemical-barrier benefits of lamellar flake reinforcement.
Key Specifications
About C-400
C-400 is a micronised C-glass flake with a D50 of approximately 15 μm and 5 ± 2 μm thickness. 88% of the mass passes below 45 μm, producing a pigment-like filler that disperses uniformly in resin matrices with conventional high-shear mixing equipment. The ultra-fine platelets remain large enough to form an overlapping barrier at 75 μm DFT — enabling sprayable thin-film anti-corrosion primers, high-gloss decorative topcoats, and functional pigments for automotive and cosmetic applications. C-400 can also be used as a partial replacement for mica, talc, or barium sulphate in formulations where improved chemical resistance and mechanical reinforcement are required.
Available Variants
PSD Profile
Full Specifications
| Median Diameter (D50) | 15 μm |
|---|---|
| Nominal Thickness | 5 ± 2 μm |
| Bulk Density | 0.75 g/cm³ |
| Typical Aspect Ratio | 3–20 : 1 |
| Glass Type | C-Glass (calcium-aluminosilicate) |
| Surface Treatments | N (none) · V (vinyl-ester) · E (epoxy) |
| Recommended Loading | 15–25 wt% |
| Recommended DFT | 75–150 μm (thin-film applications) |
| Dispersion | Pigment-like — compatible with high-shear mixing |
| Typical Use | Primers, high-gloss topcoats, functional pigments |
| Packaging | 20 / 25 kg moisture-proof paper bag |
| MOQ | 1,000 kg |
| Lead Time | 2–4 weeks from order confirmation |
| Trade Terms | FOB Tianjin · CNF · CIF |
Product Gallery
Typical Applications
Recommended Coating Systems
- • Epoxy anti-corrosion primers (use C-400E)
- • Vinyl-ester thin-film chemical barriers (use C-400V)
- • Two-component automotive clearcoats
- • Structural adhesive and sealant systems requiring reinforcement
- • Pigment-grade formulations replacing conventional extenders
Related Products
Request C-400Sample & Quotation
Free sample kits shipped worldwide — you only cover freight, which may be discounted on your first order. Typical MOQ 1,000 kg; lead time 2–4 weeks.