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IOTA 9120 is a liquid precursor polymer composed of repeating Si-N and Si-N-B units. It can be used both as a thermosetting resin and as a ceramic precursor, and under relatively mild conditions it pyrolyzes to form SiBCN ceramic products with good heat resistance. Product features include low viscosity, short curing time, multiple curing methods, high ceramic yield, good adhesion to metals, ceramics, graphite, and other materials, and easy preparation of SiBCN ceramics. Technical data: light yellow liquid, 99.9% solids (in liquid form), molecular weight 700–900, viscosity 10,000–20,000 cp, cured-product ceramic yield at 800°C >50%, and ceramic density 1.70–2.00 g/cm³.
IOTA 9120 can be crosslinked and cured at 120–180°C, either in air or under inert atmosphere. It can also be cured by platinum-catalyzed hydrosilylation at 80–100°C; curing time depends on curing temperature and catalyst dosage and is generally 2–5 h. Selection should not rely only on “high temperature resistant” or “high ceramic yield.” First confirm whether the role is a thermosetting resin or a ceramic precursor, the substrate type, the curing route and atmosphere, the pyrolysis atmosphere and target temperature, whether fillers are present, and the project acceptance criteria for adhesion, oxidation resistance, anti-corrosion, and heat resistance. This article does not equate these properties with long-term continuous service temperature, a specific salt-spray duration, or outdoor service life. IOTA can provide polyborosilazane raw materials and corresponding product data; the company does not provide complete formulations or formulation development services.
IOTA 9120 is used in ceramic matrix composites (CMCs), metal matrix composites, high-temperature adhesives, anti-corrosion coatings, high-temperature oxidation-resistant ceramic coatings, ceramic preform impregnants, thermosetting resins, and organic-inorganic hybrid materials. Different applications focus on different points: composites on impregnation and pyrolysis, adhesives on bonding and high-temperature retention, anti-corrosion coatings on film integrity and corrosion resistance, oxidation-resistant ceramic coatings on the ceramic phase after pyrolysis, and thermosetting resins on the cured network. Selection should start with the target role and application, not just “high temperature resistant.”
| What to confirm | What to specify in an inquiry or sample request |
|---|---|
| Role | Whether used as a thermosetting resin or a ceramic precursor; whether pyrolysis to SiBCN ceramic is required |
| Substrate and pretreatment | Metal, ceramic, graphite, or other substrate; surface condition, cleaning, and treatment |
| Application form | Coating, adhesive, impregnant, composite matrix, or hybrid material; target film thickness or impregnation amount |
| Curing route | Thermal crosslinking at 120–180°C (air or inert atmosphere), or platinum-catalyzed hydrosilylation at 80–100°C for 2–5 h; catalyst dosage and temperature |
| Pyrolysis conditions | Pyrolysis atmosphere (nitrogen, argon, ammonia, or air), heating rate, target temperature, and holding time |
| Filler status | Whether fillers are present, filler type and ratio; effect of fillers on pyrolysis and final ceramic product composition |
| Acceptance criteria | Bond strength, ceramic yield, oxidation resistance, anti-corrosion, heat resistance, thermal shock, etc. |
| Storage and dilution | Whether the dilution solvent is a dry solvent; whether water, alcohols, acids, bases, or other protic substances are contacted |
If the customer already has a test specification, obtain the original document first. When criteria are missing, confirm them with the project owner and test laboratory before making samples, so that both sides do not discover different interpretations of “pass” after testing.
IOTA 9120 can be used as a thermosetting resin or as a ceramic precursor. The evaluation focus differs between the two routes: as a thermosetting resin, focus on curing route, curing time, film formation, and adhesion; as a ceramic precursor, focus on pyrolysis atmosphere, ceramic yield, and SiBCN ceramic product composition.
The product data state multiple curing methods and short curing time. Thermal crosslinking can be performed at 120–180°C in air or under inert atmosphere; platinum-catalyzed hydrosilylation can cure at 80–100°C, generally in 2–5 h depending on temperature and catalyst dosage. Curing conditions should be confirmed with the formulation, film thickness, and equipment. “Fast curing” should not be taken directly as final performance.
The product data clearly state: the cured product first converts to amorphous ceramic during high-temperature pyrolysis and ultimately forms crystalline ceramic; below 1600°C it is an amorphous product, and crystallization begins above 1600°C. The ceramic product composition is closely related to the pyrolysis atmosphere: under nitrogen or argon, SiC and Si3N4 are formed; under ammonia, mainly Si3N4; under air, mainly SiBOCN. In addition, the pyrolysis of the cured product is easily affected by fillers, which also affect the final ceramic product composition.
Therefore, sample-request and acceptance documents must specify the pyrolysis atmosphere, target temperature, heating rate, holding time, and filler status. Different atmospheres give different ceramic phases; results under one atmosphere cannot be used to infer another. When fillers are present, the final ceramic product composition must also be re-evaluated. “Can be pyrolyzed to SiBCN ceramic” does not mean any atmosphere and any heating schedule will produce the target ceramic phase.
The product features state good adhesion to metals, ceramics, graphite, and other materials. Adhesion depends on substrate type, surface condition, pretreatment, film thickness, and curing/pyrolysis schedule, and should be evaluated separately on the actual substrate. For high-temperature adhesive use, also confirm bond retention at high temperature and integrity after thermal shock.
IOTA 9120 can be diluted with various dry solvents, but it is sensitive to water and alcohol solvents, which cause hydrolysis or alcoholysis and degrade the product; contact with acids, bases, and other protic substances should be avoided. Storage, dilution, and application should use dry solvents and dry containers, and compatibility should be included in the customer’s raw-material approval and site management requirements.
Technical data give a light yellow liquid, 99.9% solids (in liquid form), molecular weight 700–900, viscosity 10,000–20,000 cp, cured-product ceramic yield at 800°C >50%, and ceramic density 1.70–2.00 g/cm³. Ceramic yield is data at 800°C and cannot be directly extrapolated to other temperatures, atmospheres, or filled systems. The product data state good heat resistance, but the heat-resistance number should be understood together with atmosphere, time, heating schedule, substrate, and whether ceramic conversion has occurred. It should not be converted into long-term continuous service temperature or outdoor service life.
For anti-corrosion coating use, heat resistance is not the same as having passed a specific salt-spray or cyclic corrosion duration. For oxidation-resistant ceramic coating use, performance under high-temperature oxidation should be evaluated separately.
Obtain the customer’s service conditions and acceptance criteria; confirm whether the role is a thermosetting resin or a ceramic precursor, and whether heat resistance, adhesion, oxidation resistance, and anti-corrosion requirements are targets or existing results.
Specify substrate, surface treatment, application form, target film thickness or impregnation amount, curing route and atmosphere, pyrolysis atmosphere and heating schedule, and filler status.
Check the current IOTA 9120 data, then have the user make representative samples and keep records of formulation, dilution solvent, curing, pyrolysis atmosphere, and heating profile.
Arrange tests as agreed; keep sample identity, test conditions, observation photos, and evaluation results in the report. Before expanding use, confirm whether the samples represent actual workpieces.
IOTA/Anhui Iota Silicone Oil Co., Ltd. positions itself as a solution provider across the organosilicon industry chain and can provide polyborosilazane raw materials and corresponding product data. When communicating, provide the substrate, target role, existing process, pyrolysis equipment, atmosphere, and filler status together to facilitate candidate screening; the company does not provide complete formulations or formulation development services.
First define the role, substrate, curing route, pyrolysis atmosphere and temperature, filler status, and acceptance criteria, and then obtain the corresponding test evidence. Heat resistance should be understood under specific conditions.
Thermal crosslinking can be performed at 120–180°C in air or under inert atmosphere; platinum-catalyzed hydrosilylation can cure at 80–100°C, generally in 2–5 h. The choice should be confirmed with substrate heat tolerance, equipment, catalyst dosage, and subsequent pyrolysis arrangement.
No. The data state that under nitrogen or argon, SiC and Si3N4 are formed; under ammonia, mainly Si3N4; under air, mainly SiBOCN. Evaluation must be performed separately for the target atmosphere.
The data state that below 1600°C the product is amorphous, and crystallization begins above 1600°C. The target temperature should be confirmed with the required ceramic phase and subsequent service conditions.
Yes. The data clearly state that pyrolysis of the cured product is easily affected by fillers, which also affect the final ceramic product composition. Filled systems require re-evaluation.
No. The product is sensitive to water and alcohol solvents, which cause hydrolysis or alcoholysis and degrade the product. Dry solvents should be used, and contact with acids, bases, and other protic substances should be avoided.
