Environmentally friendly PPGI

Chromium-free passivation (such as titanium zirconium treatment), water-based coatings (VOC emissions reduced by 50%).

Functional coatings

Self-cleaning coatings (photocatalytic TiO₂), antibacterial coatings (silver ions).

Smart PPGI

Thermostatic coatings (change color with temperature), photovoltaic integration (solar panel substrate).

Selection suggestions

Outdoor buildings: PVDF coatings (weather resistance > 20 years) are preferred.

Cost sensitive: Polyester (PE) coating, taking into account both performance and price.

Harsh environment: Aluminum-zinc substrate (PPGL) + thick coating (≥25μm).

Frequently Asked Questions

Q1: How to choose PPGI and stainless steel?

PPGI: Suitable for scenes with limited budget and color requirements (such as roofs).

Stainless steel: Stronger corrosion resistance, but high cost and single color.

Q2: How long is the life of PPGI?

Normal environment: PE coating is about 10-15 years, PVDF coating is 15-25 years.

Industrial area/coastal area: life is shortened by 30%, regular maintenance is required.

Q3: How to identify high-quality PPGI?

Check the zinc layer: use a magnetic thickness gauge to detect (double-sided zinc layer ≥ 60g/m²).

Measure adhesion: tape tear test (no coating falling off).