In the extreme-environment protection material spectrum, conventional superalloys melt and deform under >1200℃ gas erosion, regular silicone coatings decompose above 500℃, and traditional ceramic powder sintering requires >1500℃ while struggling with complex geometries — the combined demand for "1600℃+ resistance + oxidation resistance + creep resistance + near-net-shape of complex parts" in aero-engine hot sections, nuclear reactor claddings, hypersonic vehicle surfaces, and EV battery thermal protection has long been unmet. Polyborosilazane (PBSZ), as a ceramifiable precursor polymer with Si-N-B repeating units, follows a "molecular construction – controlled pyrolysis" path: crosslinked and shaped at 120-180℃, then pyrolyzed into SiBCN ceramic with nano-scale homogeneous composition, remaining amorphous below 1600℃ and enabling in-situ B₂O₃ self-healing at high temperature — but high-purity precursors were long monopolized overseas, and domestication constrained downstream ceramic matrix composite (CMC) industrialization. As aerospace, nuclear energy, and new energy sectors surge in demand for ultra-high-temp structural materials, sourcing a "99.9% solids, low viscosity, dual-mode cure, >50% ceramic yield, good adhesion to metal/ceramic/graphite, domestically mass-producible" organoborosilazane has become the core proposition for SiBCN ceramic precursor localization. Addressing this "ceramic blank" pain point, Anhui IOTA Silicone Oil Co., Ltd. (IOTA) officially launches Organoborosilazane (Ceramifiable Precursor Polymer) IOTA 9120. Characterized by "light yellow liquid, 99.9% solids, Mn 700-900, viscosity 10000-20000 cp, VOC N/A, ceramic yield >50% at 800℃, ceramic density 1.70-2.00 g/cm³, 120-180℃ thermal cure (air/inert) / 80-100℃ Pt-catalyzed hydrosilylation (2-5h), amorphous below 1600℃ / crystallization above 1600℃, 0.5-20L sealed plastic drum, 6-month unopened shelf", and backed by "Si-N/Si-N-B repeating units + dual-mode crosslinking + atmosphere-tunable SiBCN pyrolysis," it serves as the "ceramic blank coating" for ceramic matrix composites, metal matrix composites, high-temp adhesives, anti-corrosion coatings, high-temp oxidation-resistant ceramic coatings, and ceramic preform impregnation. Molecular Architecture: Si-N/Si-N-B Repeating Units + Dual-Mode Crosslinking + Controlled Pyrolysis 3D Logic The core competitiveness of IOTA 9120 stems from its "organoborosilazane precursor + thermal/platinum dual-mode crosslinking + atmosphere-tunable SiBCN pyrolysis" precise architecture:

• Si-N/Si-N-B Inorganic-Organic Hybrid Backbone: Molecules consist of repeating Si-N and Si-N-B units, in liquid oligomer form with Mn 700-900 and viscosity 10000-20000 cp — possessing both the processability of organic polymers and the elemental composition of inorganic ceramics, the fundamental source of its dual identity as "both thermosetting resin and ceramic precursor."
• Dual-Mode Crosslinking: Path ① is 120-180℃ thermal cure, completed in air or inert atmosphere; Path ② is 80-100℃ platinum-catalyzed hydrosilylation, rapid cure in 2-5h. The dual-mode design allows IOTA 9120 to fit both factory high-temp lines and field applications on heat-sensitive substrates, with an extremely wide processing window.
• Atmosphere-Tunable Pyrolytic Ceramicization: The cured product first converts to amorphous ceramic upon pyrolysis, with crystallization beginning above 1600℃; ceramic composition is precisely tuned by pyrolysis atmosphere — SiC+Si₃N₄ under N₂/Ar, mainly Si₃N₄ under NH₃, mainly SiBOCN in air. Boron incorporation enables in-situ low-melting-point B₂O₃ at high temperature, imparting self-healing functionality to the ceramic.

Performance Leap: From "Superalloy / Traditional Ceramic" to "Polyborosilazane Precursor-Derived Ceramic" Incorporating IOTA 9120 enables qualitative leaps:

• 1600℃-Grade Amorphous Stability: Remains amorphous below 1600℃ with nano-scale homogeneous composition and superior high-temp phase/structural stability, far exceeding traditional sintered ceramics; boron-containing SiBCN ceramics withstand 1600-2000℃.
• >50% High Ceramic Yield: Ceramic yield >50% at 800℃; volume shrinkage from polymer to ceramic is relatively controllable, reducing defects and PIP (precursor impregnation pyrolysis) cycle counts.
• Dual-Mode Low-Temp Cure: 80-100℃ Pt-catalyzed 2-5h or 120-180℃ thermal cure — far more energy-efficient than traditional ceramic sintering >1500℃, and enabling near-net-shape of complex ceramic parts.
• Excellent Adhesion to Metal/Ceramic/Graphite: Superior substrate adhesion allows it to serve dual functions as "high-temp adhesive" and "oxidation-resistant coating," forming chemical bonds at heterogeneous material interfaces.
• B₂O₃ Self-Healing Oxidation Resistance: At high-temp oxidation, boron in-situ generates B₂O₃ glass phase covering the surface to isolate oxygen, imparting crack self-healing capability to the ceramic and significantly enhancing oxidation resistance.
• Vs IOTA PHPS: PHPS is perhydro inorganic polysilazane (Si-N hydrolytic ceramicization, 9H/800℃, anti-graffiti/semiconductor insulation/barrier); 9120 is organoborosilazane (Si-N-B crosslink-pyrolyze, 1600℃-grade SiBCN, CMC/high-temp adhesive/oxidation-resistant coating) — together they form a "PHPS inorganic hydrolytic ceramic / 9120 organic boro-nitro ceramic precursor" complementary pair, the former focused on planar coatings, the latter on bulk ceramics and composites.

Application Penetration: From Ceramic Matrix Composites to Battery Thermal Protection IOTA 9120 covers cutting-edge fields sensitive to "ultra-high-temp resistance, oxidation resistance, creep resistance, complex shaping":

• Ceramic Matrix Composites (CMCs): PIP process impregnates fiber preforms to fabricate high-strength fiber-reinforced SiBCN CMCs for aero-engine turbine blades and hypersonic vehicle hot-section components.
• Metal Matrix Composites: As interface modifier and oxidation protection layer, enhancing high-temp stability of MMCs.
• High-Temperature Adhesives: High-temp bonding of ceramics, metals, graphite — long-term service at >1000℃.
• Anti-Corrosion & Oxidation-Resistant Coatings: High-temp anti-corrosion and oxidation-resistant ceramic coatings on metal/graphite substrates, forming B₂O₃-SiO₂ glassy barrier layer on surface.
• Ceramic Preform Impregnation: PIP densification treatment, improving preform density and mechanical properties.
• Thermosetting Resins & Organic-Inorganic Hybrids: As ultra-high-temp thermosetting resin matrix, or hybridized with other polymers.
• New Energy Extension: Ceramifiable polymer matrix in EV battery pack thermal protection systems — in-situ ceramicization under flame ablation blocks heat conduction.

IOTA Technical Guide: Avoid Water/Alcohol, Dual-Mode Cure, Sealed Low-Temp Storage

• Substrate Prep: Substrate surface should be clean, dry, degreased; sanding activation on metal/ceramic/graphite surfaces recommended to enhance adhesion.
• Dilution & Application: Dilutable with various dry solvents; apply to substrate via impregnation, coating, brushing.
• Pick-One-of-Two Cure:
  • ① Thermal cure: Crosslink at 120-180℃, in air or inert atmosphere;
  • ② Pt-catalyzed hydrosilylation: 80-100℃ + platinum catalyst, 2-5h (depending on temperature and catalyst dosage).
• Pyrolytic Ceramicization: Cured product first converts to amorphous ceramic upon pyrolysis, with crystallization above 1600℃; ceramic composition tunable by pyrolysis atmosphere (N₂/Ar → SiC+Si₃N₄; NH₃ → Si₃N₄; air → SiBOCN).
• Tool Cleaning: After use, promptly wipe tools with acetone or solvent oil; once IOTA-9120 is cured, solvent cannot remove it.
• Taboo Red Line: Apply in ventilated dry environment, away from ignition/moist air/water — highly sensitive to water and alcohol (hydrolysis/alcoholysis causes degradation); avoid contact with acids, bases, and other protonic substances; keep uncured product away from fire; consult professionals for waste liquid disposal; wear gloves, masks, protective goggles.
• Storage: 0.5-20L sealed plastic drum; unopened shelf life 6 months; after opening, usable period exceeds 2 months under sealed low-temp dry storage; handle as general chemical, avoid eye/skin contact.

Industry Expert Insight: Industry experts note that over the past five years, China has achieved systematic breakthroughs in polyborosilazane synthesis, B/N ratio regulation, and hetero-element doping at the front-end design level. The mechanisms of SiBCN ceramics remaining amorphous at 1600℃ and B₂O₃ self-healing oxidation resistance have been deeply elucidated. Domestic polyborosilazane is entering an industrialization acceleration phase in ceramic matrix composites and high-temp adhesives. IOTA 9120, with "Si-N/Si-N-B repeating units + 99.9% solids + dual-mode low-temp cure + >50% ceramic yield + 1600℃-grade SiBCN" hard metrics, fills the key supply chain link for domestic organoborosilazane in CMC / high-temp adhesive / oxidation-resistant coating fields, providing a mass-producible import-substitution solution for downstream aerospace, nuclear energy, and new energy enterprises. This confirms domestic ceramifiable precursors are leaping along "polysilazane (SiCN ceramic) → polyborosilazane (SiBCN ceramic, 1600℃+ self-healing)" — a dual leap in temperature limit and functionality, with continuously growing technical say in extreme-environment protection critical materials.