Waterborne High Temperature Resistant Coatings 1200°C
When it comes to protecting surfaces in extreme environments, waterborne high temperature resistant coatings are becoming the go-to solution. Whether you're dealing with industrial equipment, automotive parts, or household appliances, these coatings offer durability, heat resistance, and corrosion protection — all without the need for harmful solvents.
At SIOResin, we’ve developed a game-changer in this space: SIO-715, a waterborne self-drying high-temperature resistant silicone resin. This product is not just another resin. It’s a robust, environmentally friendly base that helps formulators create coatings capable of withstanding temperatures from 300°C up to an incredible 1200°C, all while resisting salt spray for over 300 hours. Let’s dive into how you can use SIO-715 to create high-performance coatings, starting with a solid formulation.
Why Waterborne High-Temperature Coatings?
Traditional high-temp coatings often rely on solvent-based formulas or require high-temperature baking for curing. That’s not always practical — especially for large equipment that can’t fit into ovens or where energy costs are a concern.
Waterborne high-temperature coatings, on the other hand, offer:
- Eco-friendly application with low VOC emissions
- Room-temperature drying for convenience and energy savings
- Exceptional heat and corrosion resistance
- Salt spray resistance, crucial for outdoor and marine applications
These benefits make them ideal for a wide range of uses: from kitchenware and exhaust systems to industrial chimneys, fireplaces, and heavy-duty machinery.
Getting Started: SIO-715-Based Coating Formulation
Here’s a recommended starting formulation for a single-component, bake-type waterborne high-temperature coating using our star ingredient — SIO-715 silicone resin emulsion.
Black High-Temperature Coating Formulation (Single-Pack)
| Component | Parts by Weight | Function | Supplier |
|---|---|---|---|
| Silicone Resin Emulsion SiO-715 | 100 | Base resin, provides heat & corrosion resistance | SIOResin® |
| Black Paste (see below) | 20–67 | Pigment concentrate for color & performance | SIOResin® |
| Anti-settling Agent (Bentone LT, 2%) | 4 | Prevents pigment settling | Hemings |
| Anti-flash Rust Agent | 1 | Protects against flash rust during drying | - |
| Epoxy Phosphate (Adhesion Promoter) | 1 | Boosts adhesion to metal | - |
| Wetting Agent (Tego 4100) | 0.3 | Improves substrate wetting | Tego |
| Defoamer (Tego Foamex 810) | 0.1 | Eliminates foam during mixing | Tego |
| Thickener (SIOResin H-1100A) | 1–2 | Adjusts viscosity for spraying | SIOResin® |
Total Base Formulation: ~107–175 parts (excluding Black Paste)
Black Paste Formulation (Pigment-Filler Mix)
| Component | Parts by Weight | Function | Supplier |
|---|---|---|---|
| Deionized Water | 531.6 | Solvent/base | - |
| Dispersant H-1772W | 24 | Disperses pigments evenly | SIOResin® |
| Anti-settling Agent BYK-420 (10%) | 18 | Keeps pigments suspended | BYK |
| Anti-settling Agent Bentone LT (2%) | 24 | Prevents sedimentation | Hemings |
| Defoamer Foamex 810 | 2.4 | Controls foam | Tego |
| Low-melting-point Glass Powder | 200 | Enhances adhesion at high temps | - |
| Mica Powder | 100 | Adds barrier properties & flexibility | - |
| Copper Chromite Black | 200 | High-temp resistant pigment | - |
| High-purity Zinc Phosphate | 100 | Boosts corrosion & boiling resistance | - |
Total Black Paste: 1200 parts
Pigment & Filler Content: ~50%
How to Make It Work?
Step 1 – Black Paste Production
1. Mix defoamer, anti-settling agents, and dispersant in deionized water. Stir at 1000 rpm for 5 mins.
2. Add copper chromite black, mica powder, glass powder, and zinc phosphate. Mix at 2000–3000 rpm for 45 mins.
Step 2 – Final Coating Mix
1. Combine SiO-715 resin (100 parts) with Black Paste (20–67 parts) and the rest of the additives.
2. Disperse everything at 1000–1500 rpm for 20–30 mins.
3. Adjust viscosity as needed, then filter through a 200-mesh bag before filling.
Key Tips for Best Results
Pigment-to-binder ratio matters:
1. A higher ratio (more pigment) = better heat resistance but lower gloss. Ideal for primers.
2. A lower ratio = better salt spray & abrasion resistance, more gloss. Great for topcoats.
Dry film thickness: Keep it between 35–50 microns per coat to avoid cracking. Always let each coat cure fully before applying the next.
Baking is crucial:
1. For full performance, cure at 200–280°C for 10–60 minutes.
2. Best results? 220°C for 30 mins or 280°C for 10 mins.
First-time heating: Don’t shock the coating. Gradually increase temperature to allow secondary sintering. Avoid putting uncured or wet films directly into high heat.
Applications & Market Insights
The market for waterborne high-temperature coatings is expanding fast. Why? Because industries are under pressure to reduce VOCs, improve energy efficiency, and extend the life of metal components.
You’ll find these coatings in:
- Home appliances (like non-stick pan exteriors or oven linings)
- Automotive (exhaust pipes, engine covers)
- Industrial equipment (boilers, chimneys, kilns)
- Electronics & power generation (insulation, fireproofing layers)
And the best part? With SIO-715, formulators can create coatings that are not only high-temp resistant but also salt spray resistant, impact resistant, and chemically tough — all while being safe to apply at room temperature.
Final Thoughts
If you’re looking to develop next-level waterborne high-temperature resistant coatings, SIO-715 is your foundation. It’s reliable, high-performing, and built for real-world industrial demands. Whether you're formulating a black heat-resistant primer or a full system with a decorative topcoat, this resin has you covered — literally.
At SIOResin, we’re committed to helping you create coatings that don’t just perform, but outperform. So go ahead — push the limits. Your surfaces will thank you.
About SIOResin
SIOResin(Guangzhou SIO New Material) is a leading manufacture specializing in developping sustainable products and technologies in new material field. We provide professional solutions regarding water-based polyurethane, water-based acrylic resin, water-based UV-curing resin, silicone resin, additives and curing Agents etc., which have been widely applied in various industries, such as coatings, cosmetics, textiles, biology, automotive and other high-tech industries.
Please feel free to contact us via Email sales@sioresin.com if you would like to learn more about our products or request samples!