Summary: Anti-graffiti coatings use low surface energy plus a smooth dense surface so inks/paints can be wiped off with solvent without harming the substrate. Sacrificial types allow repeated topcoat renewal; permanent types rely on dense fluoro/silicone films.
Mechanism
Key metrics are removal rate and compatibility with multicolour coats; sacrificial clear is easy to renew but needs maintenance, permanent is durable but costlier to repair.
Key data
- Fluoro/silicone modification gives low surface energy and soil resistance.
- Sacrificial systems re-coat only a clear layer — good for frequent-graffiti, multi-colour areas.
- Metrics include cleanability, scrub resistance and recoat compatibility.
Type
| Type | Trait |
|---|---|
| Sacrificial | Renewable clear overcoat |
| Permanent | Durable, pricier repair |
Defects & fixes
- Won't clean: surface energy too high / porous — pick fluoro-silicone.
- Cleans but damages base: film too soft or solvent too strong — balance hardness/solvent.
- Recoat blotchy: clear incompatible with old layer — use same-system clear.
FAQ
How does it work?
Low surface energy + dense film stops adhesion so graffiti wipes off with solvent.
Sacrificial or permanent?
High-graffiti areas prefer renewable sacrificial; long-life assets prefer permanent.
Affect appearance?
Choose transparent, weather- and base-compatible clear to avoid yellow/loss of gloss.
Ref: anti-graffiti / easy-clean coating mechanisms (public).
Kexin New Materials (Guangdong) Co., Ltd. · 2026-09-18