Room-temperature curable coatings bring ceramic-class protection to assets that cannot go through an oven: one- and two-component polysilazane systems that cure ambient — on site, in place, on schedule — yet deliver hardness to 8H, salt-spray endurance to 5000 hours and service temperatures to 600 °C.
Six grades split by what your surface needs. Clear protection: RT6 (maintenance workhorse, ≥4H), RT7 (flagship clarity, ≥8H, 500 °C non-yellowing) and RT8 (fluoro-modified, ≥120° contact angle, anti-graffiti). Pigmented anticorrosion: RT31 (black, 600 °C hot-section duty), RT61 (gray-white, one-component, 5000 h-class thin-film antirust) and EPPSZ-2K (two-component, thermal-shock verified). Customers buy the result — free of ovens — and choose the grade by surface property.
| Grade | Product | Solid Content (120 ± 2°C) | Pencil Hardness | Neutral Salt Spray Resistance | Water Contact Angle | Cure @25 °C (RH 70%) | Service Temperature | Room-Temperature Cure | Recommended Service Temperature | Solid Content | Component Type | Curing |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SILZ-RT6 | Room-Temperature Curable Silazane Coating | >40% | ≥4H | 30 d: no blistering, cracking or rust | >105° | Surface dry 2 h · full cure >5 d | <150 °C continuous; short-term to 800 °C (substrate-dependent) | — | — | — | — | — |
| SILZ-RT7 | Room-Temperature Curing Polysilazane Clear Coating (8H) | >55% | ≥8H | 30 d: no blistering, cracking or rust | >110° | Surface dry 2 h · full cure >5 d | Non-yellowing to 500 °C long-term; short-term to 800 °C (substrate-dependent) | — | — | — | — | — |
| SILZ-RT8 | Fluoro-Modified Polysilazane Coating | >55% | ≥6H | >500 h | ≥120° | — | — | >24 h full cure (surface dry ~1.5 h) | -30 to 400 °C (500 °C instantaneous) | — | — | — |
| SILZ-RT31 | Room-Temperature Curing 600°C Anti-Corrosion Ceramic Coating | — | ≥5H | >30 d: no blistering, cracking or rust | — | — | — | >24 h | -30 to 600 °C (800 °C instantaneous) | 70–85% | — | — |
| SILZ-RT61 | Thin-Film Anti-Rust Ceramic Coating (Epoxy-Modified) | — | ≥5H | >5000 h: no blistering or rust | — | — | >200 °C continuous (400 °C instantaneous) | >24 h | — | 65–80% | — | — |
| SILZ-EPPSZ-2K | Two-Component Epoxy-Modified Polysilazane Ceramic Coating | — | ≥5H | 5000 h: no blistering, cracking or rust spots | — | — | — | — | -30 to 300 °C (400 °C instantaneous) | — | Two-component, A:B = 1:1 | Room temperature >24 h, or 150 °C <0.5 h |
Comparison values from each product's TDS; “—” = full datasheet on request. Grades without a link are being migrated to the new site.
Clearcoats (RT6/RT7/RT8) protect while showing the substrate; pigmented systems (RT31 black, RT61/EPPSZ-2K gray) add filler-packed barrier performance for corrosion-led specs.
Hardness → RT7 (≥8H). Repellency and graffiti release → RT8 (≥120°). Hot sections → RT31 (600 °C). Salt-spray endurance → RT61/EPPSZ-2K (5000 h-class). General repair → RT6.
One-component grades cure with ambient moisture — simplest field logistics. EPPSZ-2K cures by mixing (1:1), independent of humidity, with verified thermal-shock toughness — the QC-controlled choice.
All grades reach handling strength in hours ambient and full properties in 1–7 days; every grade also accepts a 150–180 °C accelerated schedule of ~30 minutes when heat exists.
Transparent, Hard & Easy-Clean Surface ProtectionElectrical Insulation & Electronics ProtectionHigh-Temperature Corrosion ProtectionThin-Film & Chemical-Resistant Anti-Corrosion
They cure to dense, hard, ceramic-like polysilazane films at ambient — hardness to 8H and service to 600 °C prove the point — but they do not require the furnace conversion of our HT line. When an oven or in-service heat is available, they densify further.
Start with RT61 (one-component) or EPPSZ-2K (two-component): both are epoxy-modified thin-film systems in the 5000-hour salt-spray class at just 40 µm. Send the environment (marine, chemical, temperature) for a confirmed system build-up.
Bare, roughened substrate (Sa 2.5 / minimum St 3) is the qualified basis. Over sound existing coatings, run an adhesion patch test first — protocols ship with each TDS, and our engineers review results with you.
Send us your substrate, application method and service conditions — our technical team replies within 1 business day.
