In the water-borne inorganic-organic hybrid coating spectrum, the "sol-gel nano-condensation of siloxane precursor + nano silica sol" and "dry-film thickness control" jointly dictate the pencil-hardness ceiling of transparent coating, 900℃ non-chalking ability, and adhesion grade on wood/metal/glass. Traditional water-borne acrylic/PU topcoats max 2-3H and <150℃—yellowing near stove; solvent ceramic paints resist heat but carry alcohol/ester VOC. As kitchen-glass anti-graffiti, wood transparent fire-proof varnish, and metal hardware high-temp topcoat demand "pure-water no alcohol/ester, dry-film <10μm high-clarity, 9H + 900℃ + 0-class adhesion," sourcing a water-borne nano-ceramic with 35% solids, colorless transparent, 150℃×3h full-cure 9H, 5-35℃ 6-month shelf has become the core gap for domestic water-borne high-temp varnish localization.
Addressing this "water-base ceramization" pain point,
Anhui IOTA Silicone Oil Co., Ltd. (IOTA) officially launches
High-Temp Water-Borne Nano-Ceramic Coating IOTA ST4 (glossy transparent topcoat). Characterized by "colorless transparent liquid, 35% solids, wet 10-100μm/dry 1-50μm, Chinese pencil 9H, adhesion 0-class, ambient 30min tack-free/7d full, 150℃×10min initial 5-8H/3h full 9H, 25kg PE or 200kg iron drum, 5-35℃ sealed 6 months," and backed by "siloxane precursor + nano silica-sol condensation ceramization + pure-water no alcohol/ester," it serves as the "water-borne ceramic anchor" for metal/glass/ceramic/wood transparent fire-proof wear-resistant topcoat.
Molecular Architecture: Siloxane Precursor + Nano-SiO₂ Cage-Net 3D Logic
The core competitiveness of IOTA ST4 stems from its "siloxane monomer (e.g., MTMS/silanol oligomer) + nano silica sol (SiO₂ 10-20nm) stably dispersed in water phase, sol-gel condensing to 3D Si–O–Si net upon drying" inorganic-organic hybrid architecture:
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Nano Silica-Sol Ceramic Hard-Core: After water evaporates, nano-SiO₂ surface Si–OH condenses into continuous Si–O–Si ceramic net (bond ~451kJ/mol), granting 9H pencil and scratch-wear resistance; nano-size <20nm ensures dry-film <10μm stays colorless transparent, no haze.
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Siloxane Precursor Coupling Adhesion: Minor siloxane hydrolyzes and co-condenses with silica net, while forming M–O–Si chemical bonds with metal oxide/glass hydroxyl/wood cellulose—cross-cut 0-class no flake; trace organic segment buffers internal stress, avoiding pure-inorganic brittleness.
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Pure-Water Zero-VOC: Medium is pure water, no alcohol/ester/ether—no formaldehyde/benzene release, non-flammable, non-haz transport; brush-open, good leveling, 30min tack-free fits field repair.
Performance Leap: From "Organic Topcoat 150℃ Yellow" to "Water Ceramic 900℃"
Incorporating IOTA ST4 enables qualitative leaps:
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Kitchen-Glass Anti-Graffiti: 5-8μm on shower/stove glass—9H vs key scratch, oil/fingerprint wipe with damp cloth, graffiti pen erases whole, 900℃ local heat no crack.
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Wood Transparent Fire-Proof: Solid furniture/panel varnish, dry <10μm no color change, 900℃ short flame sweep non-combustible (inorganic SiO₂ oxygen barrier), dust/oil proof, 7d ambient usable.
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Metal Hardware High-Temp: Exhaust pipe/fireplace/industrial oven shell, 150℃×3h cure, 9H steel-wool resistant, salt spray >300h, acid/alkali wipe no mark.
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Ceramic Glaze Enhance: Sanitary ceramic/kitchen countertop shower-coat, keeps original glaze gloss, anti-scale anti-yellow, avoids strong acid cleaner damage.
Application Penetration: From Shower Cabin to Exhaust Pipe
IOTA ST4 covers sectors triply sensitive to "transparent + high-hard + heat":
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Kitchen & Home: Glass partition, bath door, stove backsplash, wood furniture transparent fire varnish.
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Metal High-Temp Parts: Exhaust pipe, fireplace, oven shell, hardware gloss topcoat.
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Ceramic & Glass: Sanitary ceramic hardening, decorative glass anti-scratch, showcase transparent wear layer.
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Special Protection: Wood fire treatment, lab bench acid/alkali varnish.
IOTA Technical Guide: Pure-Water Thin-Wet, Anti-Freeze Seal
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Substrate Pretreat: Sanding (metal Sa2.5/wood 240mesh) → degrease → dry dust-free; glass/ceramic alcohol wipe.
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Coating Param: Brush/shower/spin/roll all OK; recommend two thin passes, each dry <10μm (best performance), wet 10-30μm; inter-layer 30min tack-free then overlay.
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Cure Schedule: Ambient 30min tack-free, 7d to 9H; for throughput 150℃×10min initial (5-8H), 150℃×3h full (9H).
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Taboo Red Line: Pure-water system, <5℃ freezes/breaks, >35℃ self-polymerizes thickens—store strictly 5-35℃; reseal after opening (water loss raises solids, nano-SiO₂ skins); no direct mix with organic solvent/strong acid-base.
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Storage: 25kg PE/200kg iron drum, non-haz; 5-35℃ cool dry sealed, shelf 6 months (plant std), re-inspect viscosity/tack-free/adhesion and extend if qualified.
Industry experts note that under the dual-carbon push for water-borne substitution, kitchen-glass transparent anti-graffiti, and wood transparent fire-proof demand growth, pure-water nano-ceramic topcoats are upgrading from "solvent ceramic supplement" to "9H+900℃ transparent varnish reference." IOTA ST4, with its "35% solids + dry<10μm high-clarity + 9H/900℃/0-class" hard metrics,
fills the domestic supply chain gap for water-borne nano-ceramic coatings in wood/metal/glass/ceramic transparent high-temp topcoat, providing a mass-producible path to replace imported Wacker water-borne ceramic varnish, PPG pure-water high-temp clear for downstream home/industrial plants. This confirms domestic water-borne ceramic coatings are advancing steadily along "silica-sol nano → pure-water no-alcohol-ester → thin-dry high-clarity," with growing technical say in water-borne high-temp transparent protection key materials.
