The Si-N and Si-H bonds readily react with hydroxyl-containing substances, making them suitable as amine curing agents. They can also modify hydroxyl-containing resins to improve their temperature and weather resistance, such as phenolic resins, epoxy resins, alkyd resins, and acrylic resins.
Silazanes have widespread applications in the rubber and ceramics industries. For example, in the silicone rubber processing industry, silazanes are excellent additives, acting not only as structure-optimizing control agents but also improving the heat resistance and mechanical strength of vulcanized rubber. Therefore, silazanes are added in the processing of other organic synthetic rubbers to improve their thermal stability and mechanical strength.
The main characteristics of the SILZ-701 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) |
11-60s |
GB-T 1723-1993 |
| Quality Specifications |
≥95% |
Q/YX 10-2023 |
| Solid Content ((120±2)℃) |
＞98% |
GB/T 1725-2007 |
| Density (g/mL) |
1.04±0.01 |
GB/T 6750-2007 |
| Relative Molecular Mass |
177-581 |
GB/T 27843-2011 |
| Hardness (Pencil) |
≥4H |
GB/T 6739-2006 |
| Adhesion |
Class 0 |
GB-T 9286-1998 |
| Salt Spray Resistance |
＞500h |
GB-T 10125-2021 |
| Temperature |
165℃ |
180℃ |
200℃ |
250℃ |
| Curing conditions (dry film thickness 5-25 μm, humidity 50%) |
Surface dry time |
1h |
0.2h |
0.1h |
0.1h |
| Full Cure Time |
1h |
1h |
0.5h |
0.5h |
Standard Application Procedure: Surface Cleaning → Roughening → Cleaning and Blowing → SILZ-701 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: For laboratory spraying, a 0.5-1.0 mm nozzle spray gun will provide better appearance and uniformity.
- Curing: After spraying, allow the surface to dry for 10 minutes, then cure at 180℃ for 30 minutes (for coatings used below 400℃), or at 250℃ for 30 minutes (for coatings used above 400℃).
