Zinc Calcium Phosphate Heavy-Duty Coating
Zinc calcium phosphate heavy-duty coating agent produces a thick, coarse-grained phosphate crystal layer on steel substrates, providing superior adhesion for heavy primer and anti-corrosion coating systems. The calcium incorporation refines crystal morphology and reduces total coating weight while maintaining high paint adhesion values. It is widely used in heavy vehicle, rail, and marine structure pre-treatment applications.
Technical Specifications
| pH | 2.5-3.2 |
| appearance | Grey-white powder or liquid concentrate |
| active content (%) | ≥80 |
| coating weight (g/m²) | 5-15 |
| process temperature (°C) | 50-70 |
Applications
- Heavy truck chassis and body pre-treatment
- Rail and railway car anti-corrosion preparation
- Construction steel structure coating adhesion
- Agricultural machinery heavy-duty finishing
- Oil and gas pipeline external coating preparation
Key Features
- Higher coating weight for heavy-duty corrosion protection needs
- Calcium addition produces uniform fine-crystal morphology
- Excellent adhesion base for epoxy and alkyd heavy-duty primers
- Suitable for immersion and spray application processes