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Organic Polysilazane IOTA 9150A


IOTA 9150A is a liquid polysilazane with a Si-N structure, the main functional bonds are Me. It is developed for room temperature cured and adjustable curing time coating systems. The product has a unique Si-NH-Si bond, can be cured at room temperature, curing mainly involved in the reaction of Si-NH-Si hydrolysis and oxidation. While the Si-NH-Si bond and the substrate surface-OH easily react, and bring the substrate and good adhesion. Addition the appropriate catalyst in the resin can promote Si-H and Si-NH-Si reaction, after curing resin to form three-dimensional cross-linked structure, giving the material good mechanical properties.

IOTA 9150A has low viscosity and good adhesion, can be applied to various types of substrates by smearing, dipping, spraying, brushing and other methods, the main substrates are metals, alloys, glass, paint films and plastics (such as PP, PC, PVC, PMMA), etc.

Product Features

Good toughness, less prone to cracking

Low viscosity

Adjustable curing time

Various curing methods

Non-flammable after curing

Anti-oxidation, anti-corrosion

Easy to clean

Good adhesion on the metal ceramic graphite materials




Non-flammable composites

Polymer matrix composites

Glass and Abrasives

Applications with low surface tension and easy cleaning clean field

Technical index

Appearance: Colorless to light yellow transparent liquid

Molecular weight (Mn): 800-900

Solid content: ≥99% (other contents could be customized)

Liquid Density: 0.98g/cm3-0.99g/cm3

Cured coating density: 1.3 g/ml

Viscosity: 10cp-40cp

Cracking threshold: 100µm+(coating thickness)

Curing conditions: cured in room temperature without catalyst

Surface dry time in room temp.: 20min-120min(could be customized)

 Fully cured time:  a. more than 24hours in room temp.

                   b. Heating could promote the curing process, heat in 120℃-  180℃ for 2-5hours after surface dry.

The hardness after cured:  Room temp. cured for 12hours:  5H

                         Room temp. cured for 24hours:  7H

Hydrophobic angle: 100°-105°

Recommended temperature of varnish coating: <300℃

Recommended operating temperature with main coating: <1000℃

Chemical masking: perform good with O2,H2O and other gas

Linear shrinkage: <1%

Transmittance (visible light): >95%

Metal Adhesion (Cross-Hatch): 0 grade

Shelf life: 12months in unopened condition

Hazard description: highly flammable liquid and vapour; harmful if swallowed; eye damage


1.IOTA 9150A at 20℃-40℃, the thickness is 10μm-100μm, surface dry time is 30min-45min.

2. The heating curing process of IOTA 9150A is operated after surface dried, curing temp. is 60℃-200℃. The totally cured time will be shorten as the temp. increasing.

3. The operating temp. of IOTA 9150A is related to the coating thickness, the higher

thickness, the better protection, but the coating is easy to be crack in high temperature.

Application sample:

Anti-corrosion coating case

Coating thickness


Coating methods


Surface protection of radar and other equipment


l  Effect: The transparent coating does not affect the surface camouflage texture effect of radar and other equipment, and provides anti-corrosion, anti-graffiti, anti-scratch and certain hydrophobic and high-temperature resistance effects.

l  Recommend solid content: 15%-25%

l  Dilution method:

(1)Diluent preparation: The diluent is hydrofluoroether (flame retardant), which can be adjusted according to different conditions.

(2)IOTA 9150A: Solvent=1:2-5, prepare the proper solvent, add into IOTA 9150A solution.

(3) Sealed with High purity argon/nitrogen in metal container.

How to use?

1. Take the prepared polysilazane solvent, evenly sprayed on the surface of the substrate of radar and other equipment.

2.    After operated, place in room temp. for 60min, heat in 45°C for 2hour, 125°C for 1hour.


The product could be miscible with most non-polar solvents, such as alkanes, ethers, ketones, esters. Insoluble in alcohol and ether solvents, such as diethylene glycol dimethyl ether, diethylene glycol dibutyl ether, tetraethyl ether Butyl glycol ether.

It’s also miscible with a variety of resins, such as epoxy silicone resin, silicone resin, it will shorten the curing time and improve resin hardness when mixed with silicone resins.


Operating and storing in a dry, cool and well-ventilated environment, away from heat and fire sources, the recommended temperature is 0-20℃.

The gloves, masks, etc. is necessary when taking the product.

Uncured product should not be placed close to fire sources, humid air, or water.

The container must be replace the air with nitrogen/argon and completely sealed in time after use.

Unused product that has been formulated cannot be recycled and should be disposed of in accordance with local regulations.

Products beyond the shelf life can be used only after the retesting complied.


Packed with metal container in 100ml, 1L and 5L.


Proper cleaning methods are important, quickly wipe down the surface with acetone or mineral spirits after use.

Once IOTA 9150A is cured, the coating cannot be washed away by solvent. It can be treated with strong alkali such as sodium hydroxide 10% aqueous solution for more than 5 hours.


The storage environment should be dry, cool and well ventilated, away from heat and fire sources. The packaging container must be kept tightly closed and handled with care. The storage temperature should be kept between 0°C and 20°C, and the storage period is 12 months.

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