KF-WM100 water-based epoxy MIO intermediate coat is an environmentally friendly alternative to solvent-borne MIO intermediate coats. Based on water-based epoxy resin, it retains the flake barrier effect of MIO. VOC <80 g/L, meeting green building and environmental regulation requirements. It is applied over the water-based zinc-rich epoxy primer (KF-WZ500) of the same coating system, and with a water-based polyurethane topcoat forms a fully water-based heavy-duty anticorrosive coating system.
TDS Technical Data Sheet – Waterborne Epoxy Mica Iron Oxide Intermediate Coating KF-WM100
Technical Data Sheet · Waterborne Epoxy MIO Intermediate Paint · KF-WM100
1. Product Description
2. Typical Applications
The intermediate layer of the water-based heavy-duty anticorrosive coating system — used together with water-based zinc-rich epoxy primer + water-based polyurethane topcoat. For projects with strictly limited VOC emissions, green building certification projects, and anticorrosion of steel structures in enclosed indoor spaces.
3. Technical Parameters
| Product type | Two-component solventborne coating |
|---|---|
| Color | Any colour to order |
| Gloss | Semi-gloss(30-60 GU) |
| Volume solids | 50±5% |
| Recommended DFT | 30-100 μm/coat |
| Theoretical spreading rate | 5-15 m²/L |
| Mixing ratio | A:B=4:1 |
| Pot life | 4h(20°C) |
| Surface dry time (23°C) | ≤2h(23°C) |
| Hard dry time (23°C) | ≤24h(23°C) |
| Full cure | 7 days (23°C) |
| Application temperature | 5-40°C |
| Relative humidity | <85% |
| Flash point (closed cup) | approx. 25°C |
| Density (mixed) | approx. 1.4 kg/L |
| VOC content | <420 g/L |
| Adhesion | Grade 0–1 |
| Packaging Specs | 20 L drum |
| Shelf Life | 12 months(original sealed) |
| Salt spray resistance | ≥500h |
| Standard | GB/T 25263 / ISO 12944 |
| Product type | Two-component waterborne epoxy MIO midcoat (eco-friendly) |
| VOC content | <80 g/L |
4. Application Guide
Surface preparation
Thoroughly clean the substrate surface to remove oil and rust. Abrasive-blast steel to Sa2.5 (ISO 8501-1) with 40-75μm surface profile. Concrete substrate moisture content must be below 6%, grind to remove laitance. For old coatings, remove loose areas and roughen the surface.
Mixing / compounding
According to the mix ratio indicated on the product label, add the hardener (component B) slowly to the base (component A) and mechanically stir for 3-5 minutes until uniform. Let stand to mature for 10-15 minutes before use. Use up within the specified pot life after mixing.
Application method
Recommended air spray (gun orifice 1.5-2.0 mm, pressure 0.4-0.6 MPa) or airless spray (nozzle 0.38-0.53 mm, pressure 15-25 MPa). Small areas may be brushed or rolled. Keep each coat dry film thickness within the specified range.
Curing Conditions
Self-cures at ambient temperature (23°C) provided relative humidity meets requirements. Do not apply under low temperature (<5°C) or high humidity (>85%). Conduct performance testing only after full cure.
5. Packaging & Storage
| Packaging Specs | 20 L drum |
|---|---|
| Storage Conditions | Store at 5–35°C in a cool, dry, ventilated place away from ignition and heat sources; keep container sealed. |
| Shelf Life | 12 months(original sealed) |
| Transport | Transport as non-hazardous goods. In summer, ship in early morning or evening; avoid sun exposure. |
6. Health & Safety Notes
⚠️ Important Safety Notice
Read and understand the product's MSDS (Material Safety Data Sheet) carefully before using this product.
- Proper personal protective equipment (gloves, goggles, protective suit) must be worn during application
- Ensure the work area is well ventilated
- Keep away from fire and heat sources
- Avoid inhaling vapours and mist
- Avoid contact with skin and eyes
- If you feel unwell, stop work immediately and seek medical advice
Disclaimer
The data in this TDS are typical values and do not constitute product specifications. Actual product performance may vary depending on application conditions, substrate condition and environmental factors. Users are advised to conduct small-scale sample tests before bulk use to confirm product suitability.
Kexin New Materials continuously improves its products and reserves the right to modify technical parameters without prior notice. For the latest version please visit www.psste.com/water-based-epoxy-mio-intermediate-tds/ available on request.
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