Product Overview
The formulation pairs a polysilazane film-former with specialized diluents, inhibitors and leveling additives, so it applies like paint and cures like a thin ceramic. Service runs below 150 °C continuously with short-term substrate-dependent exposure to 800 °C, and 30-day immersion in 5% NaCl, H₂SO₄ and HNO₃ leaves the film uncorroded.
Formulated with compatible fillers, RT6-based systems reach performance comparable to our SILZ-HT21 line — acid, alkali, UV and cracking resistance — which is why it serves aerospace, petrochemical, metallurgy and power-generation maintenance programs as the entry point of the room-temperature series.
Key Benefits
Cures on site, no oven
Full ambient cure with an optional 180 °C accelerated schedule (30 minutes) when a line oven exists.
Generous film window
20–200 µm dry film in a single coat — the most forgiving build range in the series, suited to repair and field work.
30-day chemical immersion
5% NaCl, H₂SO₄ and HNO₃ for 30 days without corrosion; 30-day neutral salt spray without blistering or rust.
Hydrophobic, self-cleaning surface
>105° contact angle sheds water and grime for outdoor anti-aging duty.
Typical Applications
- Coating repair & maintenance
- Wear/fire-resistant protection
- Outdoor hydrophobic self-cleaning surfaces
- Antibacterial skin-contact topcoats
Solution guides: Transparent, Hard & Easy-Clean Surface Protection
Technical Data
| Test Item | Performance Indicator | Test Method |
|---|---|---|
| Appearance | Light yellow to colorless transparent liquid | — |
| Density | 0.87 ± 0.02 g/mL | — |
| Solid Content (120 ± 2°C) | >40% | — |
| Pencil Hardness | ≥4H | — |
| Adhesion | Grade 0 | — |
| Neutral Salt Spray Resistance | 30 d: no blistering, cracking or rust | — |
| Artificial Aging Resistance | 30 d: no chalking or cracking, slight color change | — |
| Chemical Resistance | 5% NaCl / H₂SO₄ / HNO₃, 30 d: no corrosion | — |
| Water Contact Angle | >105° | — |
| Dry Film Thickness | 20–200 µm (single coat, ≤200 µm) |
| Cure @25 °C (RH 70%) | Surface dry 2 h · full cure >5 d |
| Heat Cure Option | 180 °C: surface dry 6 min, full cure 0.5 h |
| Working Time (after opening) | 6 h |
| Service Temperature | <150 °C continuous; short-term to 800 °C (substrate-dependent) |
| Storage / Shelf Life | 5–30 °C · 6 months |
Values from the SILZ-RT6 technical data sheet. Complete TDS with test conditions available on request.
Curing & Processing Guidance
Prepare surfaces to Sa 2.5 (minimum St 3, no mill scale), degrease and dry. Shake the container thoroughly and filter through a 400-mesh sieve before use.
Spray with a 0.5–1.0 mm nozzle in one coat, keeping dry film at or below 200 µm. Use opened material within 6 hours.
At room temperature the film is surface-dry in 1–3 hours (temperature-dependent) and fully cured in 3–7 days; at 180 °C full cure takes 30 minutes. Humidity participates in cure — the 70% RH reference schedule shortens in humid conditions and stretches in very dry air.
Substrate Compatibility
Steel, stainless steel, aluminum and common industrial metals after standard preparation; also masonry-class surfaces in maintenance duty. For substrate-specific systems — especially where short-term high-temperature excursions are expected — confirm the formulation with our engineers.
SILZ-RT6 — Purchasing & Application FAQ
How does SILZ-RT6 differ from SILZ-RT7?
RT6 is the maintenance-grade workhorse: ≥4H hardness, higher build tolerance and the lowest cost of entry. RT7 is the premium clearcoat: ≥8H hardness, >110° contact angle and 500 °C non-yellowing service. Choose RT6 for repair and general protection, RT7 where hardness and long-term heat exposure dominate.
Can I speed up the multi-day ambient cure?
Yes — any heat helps. The formal accelerated schedule is 180 °C for 30 minutes; lower oven temperatures shorten cure proportionally. Ambient humidity also accelerates cure since moisture drives the reaction.
Is RT6 suitable for surfaces that see occasional flame or heat spikes?
Short-term exposure up to 800 °C is possible depending on substrate and film design. For repeated or continuous high-temperature duty, use the SILZ-HT ceramic line instead — RT6's continuous rating is below 150 °C.
TDS / SDS / COA & Samples
Technical Data Sheet, Safety Data Sheet and batch Certificate of Analysis are available for SILZ-RT6, and a COA accompanies every shipment. Evaluation samples ship with starting-parameter guidance.
Packaging: Available in 1 kg, 2 kg, 5 kg and 25 kg pails. Shelf life 6 months at 5–30 °C in the original sealed container.
SDS & batch COA on request · Reply within 1 business day.