Polyester Modified Polysilazane SILZ-PEPSZ

SILZ-PEPSZ is a polyester-modified polysilazane resin developed to overcome the intrinsic brittleness and limited flexibility of conventional high-hardness polysilazane systems. By introducing polyester segments and hydroxyl functional groups into the polysilazane molecular backbone, the cured coating exhibits significantly enhanced flexibility, water-boiling resistance, salt spray resistance, abrasion resistance, optical transparency, and aging resistance. After curing, the coating forms covalent bonds with the substrate, resulting in excellent mechanical strength and long-term durability.

• High-voltage insulating coatings for new energy lithium batteries;
  • Flexible insulating cables and enameled wire insulation systems;
  • High-strength cement products, panels, pipes, and advanced construction materials;
  • Thermal insulation and reflective coatings, dielectric base primers;
  • Building materials, molds, ship hull protection;
  • Adhesive bonding for FRP, rigid plastics, concrete, and electrical encapsulation;

Application Parameters & Curing Conditions

Standard Application Procedure: Surface Cleaning → Roughening → Cleaning and Blowing → SILZ-PEPSZ 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 Preparation: This product is a single-component product. Take an appropriate amount as needed and filter it through a 120-mesh sieve.
5. Coating Application: For best appearance and uniformity, use a 1.0-caliber spray gun in the laboratory.
6. Curing: After spraying, cure at room temperature for more than 1 hour for surface drying, more than 2 hours for touch drying, and more than 24 hours for complete drying. Alternatively, it can be cured quickly by heating (140℃ for 30 to 40 minutes).