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Organic polysilazane IOTA 9150K

Organic Polysilazane IOTA 9150K


IOTA 9150K is a liquid polysilazane, it is developed for room temperature cured 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 9150K 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.

IOTA 9150K has high activity, generally solid content is 50%, could customized as customers’ requirements.

Product Features

Low viscosity

Short surface dry time

Various curing methods

Non-flammable after curing

Anti-oxidation, anti-corrosion

Easy to clean

Good adhesion on the metal ceramic graphite materials

Applicationsfor large-scale industrial production



Non-flammable composites

Polymer matrix composites

Glass and Abrasives

Applications with low surface tension and easy cleaning field

Technical index

Appearance: Colorless to light yellow transparent liquid

Molecular weight (Mn): 800-900

Solid content: ≥50% (other contents could be customized)

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

Viscosity: 10cp-40cp

Cracking threshold: 100µm+(coating thickness)

Curing conditions: cured in room temperature without catalyst

Surface dry time in room temp.: 1min-10min (could be customized)

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

                    b. Heating could promote the curing process, heat in 120℃-  150℃ 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: Well performed 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


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

2.    The operating temp. of IOTA 9150K is related to the coating thickness, the higher thickness, the better protection, but the coating is easy to be crack in high temperature.


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.

Operation methods

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.


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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