Polysilazane SILZ-150

This product uses polysilazane as the film-forming substance and is a solvent-free, room-temperature self-curing product. The main reactions involved in curing are the hydrolysis and oxidation of Si-NH-Si. Simultaneously, the Si-NH-Si bonds readily react with the -OH groups on the substrate surface, resulting in excellent adhesion. Adding appropriate catalysts to the resin can further promote the reactions of Si-H and Si-NH-Si, forming a three-dimensional cross-linked structure after curing, endowing the material with excellent mechanical properties. It has a pencil hardness higher than 5H and does not yellow. It is suitable for insulating coatings, wear-resistant and fire-retardant coatings, outdoor hydrophobic self-cleaning and anti-aging coatings, and skin-friendly antibacterial paints. After curing, it forms covalent bonds with the substrate, significantly improving the mechanical strength of the coating through chemical bonding. The Si-N bonds readily react with hydroxyl-containing substances, allowing it to be used as an amine curing agent. It can also modify hydroxyl-containing resins to improve temperature and weather resistance, such as phenolic resins, epoxy resins, alkyd resins, and acrylic resins.

Applicable substrates:

Carbon steel, stainless steel, cast iron, aluminum alloy, titanium alloy, high-temperature alloy steel, microcrystalline glass, ceramics, cement, etc. Note: 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:

Suitable for outdoor applications below 400℃ and short-term high-temperature applications up to 600℃. The coating’s temperature resistance will vary depending on the substrate’s temperature resistance, and it is resistant to thermal shock and cold shock (Note: Different substrates require different products).

The main characteristics of the SILZ-150 coating are as follows:

Coating performance

Construction basic parameters

 Special Notes:

This product is a single-component self-curing product. Once opened, the coating should be used within 4 hours. For longer application intervals, ensure all tools are clean to prevent adhesion. It is recommended to apply in one coat, with a dry film thickness not exceeding 50µm; otherwise, coating performance will decrease.

Standard Application Procedure: Surface Cleaning → Roughening → Cleaning and Blowing → SILZ-150 Treatment → Curing

Instruction Manual

1. Roughening: Before coating, 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 specialized cleaner or degreaser to remove residual oil, dust, etc., from the roughened surface.
3. Substrate Drying: Ensure the substrate surface is dry and clean before coating.
4. Coating Mixing: This product is a single-component product. Take an appropriate amount and filter through a 120-mesh sieve as needed.
5. Coating Application: For best appearance and uniformity, use a 1.0mm nozzle spray gun in the laboratory. The cured coating has some hydrophobic and oleophobic properties; therefore, repeated application is not recommended.
6. Curing: After spraying, the coating should be surface dry in 2 hours, touch dry in more than 3 hours, and completely dry in more than 24 hours at room temperature.