Applicable Substrates of SILZ-702 Methylhydrosilazane:
Carbon steel, stainless steel, cast iron, aluminum alloys, titanium alloys, high-temperature alloy steel, microcrystalline glass plates, ceramics, cement, etc.
Different substrates require different coating formulations. Within a certain range, the formulation can be adjusted according to the specific application conditions of the substrate.
Applicable Temperature: Maximum withstand temperature 350℃, can be used continuously at 3500℃. Coatings compounded with heat-resistant nanofillers can withstand direct erosion from flames or high-temperature airflows. The temperature resistance of the coating will vary depending on the temperature resistance of the substrate. It is resistant to thermal shock and cold shock (Note: Products for different substrates will vary).
The main characteristics of the SILZ-702 coating are as follows:
Coating performance
| Test Items: | Performance indicators | Test Methods |
| Color and Appearance | Pale yellow to colorless transparent liquid | GB-T 1721-79 |
| Viscosity (Ford Cup 4) | 35-50s | GB-T 1723-1993 |
| Quality Specifications | ≥95% | Q/YX 10-2023 |
| Solid Content ((120±2)℃) | ＞98% | GB/T 1725-2007 |
| Density (g/mL) | 1.05±0.01 | GB/T 6750-2007 |
| Relative Molecular Mass | ＞8×10⁴ | GB/T 27843-2011 |
| Hardness (Pencil) | ≥6H | GB/T 6739-2006 |
| Adhesion | Class 0 | GB-T 9286-1998 |
| Salt Spray Resistance | ＞500h | GB-T 10125-2021 |
Construction basic parameters
| Item | Parameters: | Item | Parameters |
| Coating Solids Content (%) | The varnish has a high viscosity; it is recommended to dilute it by 50% before application. | Volatility | Difficult to volatilize |
| Theoretical Coverage (m²/kg) | 12～28 | Curing Temperature (℃) | 180-250 |
| Dry Film Thickness (µm) | 10±5 | Curing Time (h) | 1 |
| Working Time (h) | 24 | Maximum Instantaneous Temperature (℃) | 500 |
| Thinner | Aromatics, lipids, ethers, etc. | Recommended Operating Temperature (℃) | -30 to 300 |
| Flash Point (℃) | <22 (solvent flash point) | Storage Temperature (℃) | 0-30 |
Special Notes:
This product is a single-component thermosetting product. Once opened, the coating should be used within 24 hours. For extended application intervals, ensure application tools are thoroughly cleaned to prevent adhesion. It is recommended to apply in one coat, with a dry film thickness not exceeding 15µm; otherwise, coating performance will be reduced.
Standard Application Procedure: Surface Cleaning → Roughening → Cleaning and Blowing → SILZ-702 Treatment → Curing
Instruction Manual
- Surface Roughening: Before coating, grind or sandblast the substrate surface to remove rust, dust, dirt, etc. Surface roughening significantly affects the coating effect; optimal Sa2.5, minimum St3 (no oxide scale) (GB/T 30790.4-2014), so please pay close attention.
- Cleaning: Use a specialized cleaner or degreaser to remove residual oil, dust, etc., from the roughened surface.
- Substrate Drying: Ensure the substrate surface is dry and clean before coating.
- Coating Mixing: This product is a single-component product. Take an appropriate amount and filter through a 120-mesh sieve as needed.
- Coating Application: Laboratory spraying with a 1.0mm nozzle provides better appearance and uniformity. The cured coating has some hydrophobic and oleophobic properties; therefore, repeated application is not recommended.
- Curing: After spraying, allow the surface to dry for 10 minutes, then cure at 250℃ for 60 minutes.
Safety and Storage
- Must be stored in accordance with national regulations. The storage environment should be dry, cool, and well-ventilated, away from heat and fire sources. Packaging containers must be kept tightly sealed and handled with care.
- Storage temperature should be maintained between 5℃ and 30℃. Shelf life is 12months.
- Unused paint after opening must be tightly sealed and stored.
- Unused mixed paint cannot be recycled and should be disposed of according to local regulations.
- Products exceeding their shelf life may only be used after passing inspection.
Note:
The information provided above is entirely based on our knowledge gained in laboratories and in practice. The use of the product is generally beyond our control, therefore we only guarantee the quality of the product itself. To comply with local regulations, the product may be adjusted accordingly, and we reserve the right to modify the instructions without further notice. Users should consult our New Materials Division for specific guidance on the applicable performance of the product, based on their own needs and specific applications.
Packaging
In 1kg, 2kg, 5kg, 25kg pail.