Epoxy Modified Polysilazane SILZ-EPPSZ

SILZ-EPPSZ is an epoxy-modified polysilazane system using polysilazane as the primary film-forming material, combined with epoxy resin and formulated with small amounts of diluents, retarders, and leveling additives. After curing, the coating forms covalent bonds with the substrate, significantly enhancing mechanical strength, adhesion, and durability. The cured film exhibits high pencil hardness, excellent anti-yellowing performance, and outstanding heat resistance, making it suitable for high-temperature bonding, infrastructure and bridge construction bonding, weather-resistant anti-corrosion coatings, electrical insulation components, and mechanical protective coatings.

– High-temperature structural bonding
– Bridge and infrastructure adhesive systems
– Weather-resistant and anti-corrosion coatings
– Electrical insulation and heat-resistant components
– Mechanical protection coatings

Application Parameters & Curing Conditions

Special Notes:

This product is a single-component curing product. Use within 3 hours of opening. For longer application intervals, clean application tools thoroughly to prevent adhesion. It is recommended to apply in one coat, with a dry film thickness not exceeding 150µm; otherwise, coating performance will decrease.

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

Instruction Manual

1. Roughening: Before coating, grind or sandblast the substrate surface to remove rust, dust, dirt, etc. Roughening significantly affects the adhesive layer effect; optimal Sa2.5, minimum St3 grade (no oxide scale) (GB/T 30790.4-2014), so please pay close attention.
2. Cleaning: Use a dedicated 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. Adhesive Filtration: This product is a single-component product. Take an appropriate amount and filter through a 120-mesh sieve as needed.
5. Adhesive Coating and Bonding: Apply the adhesive to the surfaces of the workpieces to be bonded and fix it in place. After surface curing, the adhesive layer has certain hydrophobic and oleophobic properties.
6. Curing: After application, surface drying takes more than 2 hours at room temperature and complete drying takes more than 24 hours. Alternatively, it can be cured at 180℃ for half an hour.