Room-temperature Curable Polysilazane Coating SILZ-RT7

SILZ-RT7 is a high-performance, room-temperature curable polysilazane clear coating. Based on a polysilazane film-forming system and formulated with specialized diluents, inhibitors, and leveling additives, SILZ-RT7 addresses the long-standing limitation of conventional ceramic coatings that require high-temperature curing. The cured coating exhibits ultra-high surface hardness (≥8H), excellent transparency, and outstanding color stability, maintaining non-yellowing performance under long-term exposure up to 500°C, with short-term resistance up to 800°C (substrate-dependent).

SILZ-RT7 is suitable for applications requiring ambient-temperature processing combined with ceramic-like protection. After curing, the coating forms covalent bonds with the substrate, significantly enhancing mechanical strength and durability.
• Surface protection clear coats
• High-voltage electrical insulation coatings
• Wear-resistant and fire-resistant protective layers
• Outdoor hydrophobic, self-cleaning, and anti-aging coatings
• Electronic encapsulation and functional coatings
• Skin-contact-friendly and antibacterial topcoats
When used in hybrid formulations, SILZ-RT7 demonstrates performance characteristics comparable to SILZ-HT21 systems, including excellent resistance to acids, alkalis, UV radiation, and environmental cracking. It has been widely applied in aerospace, petrochemical, metallurgy, power generation, and military-related facilities.

Special Note: SILZ-RT7 is a single-component, room-temperature curable product. After opening, use within 6 hours. Recommended single-coat application with dry film thickness not exceeding 200 μm.

Standard Processing Procedure: Standard Processing Procedure: Surface Cleaning → Roughening → Cleaning and Blowing → SILZ-RT7 Room Temperature Curing Silazane Treatment → Curing

Instruction Manual

1. Roughening: Before applying SILZ-RT7 room temperature curing silazane, grind or sandblast the substrate surface to remove rust, dust, dirt, etc. Roughening significantly affects the coating effect; optimal Sa2.5, minimum St3 (no oxide scale) (GB/T 30790.4-2014), so please pay close attention.
2. Cleaning: Use a special cleaning agent or degreaser to remove residual oil, dust, etc., from the roughened surface.
3. Substrate Drying: Ensure the substrate surface is dry and clean before applying SILZ-RT7 room temperature curing silazane.
4. Coating Mixing: This product is a single-component product; shake well before use and filter through a 400-mesh sieve.
5. Coating Application: For laboratory spraying, a 0.5-1.0 mm nozzle spray gun will provide better appearance and uniformity.
6. Curing: After spraying, the coating should cure at room temperature. Surface dryness should occur in 1 hour, touch dryness in more than 3 hours, and fully dryness in more than 24 hours. Heat curing can also be used for rapid curing.