| Appearance: | Liquid |
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| Usage: | Colorless to Light Yellow Transparen |
| Color: | Colorless |
| Molecular Weight (Mn): | 800-900 |
| Liquid Density: | 0.98g/cm3-0.99g/cm3 |
| Viscosity: | 10cp-40cp |
| Samples: |
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Audited Supplier Description IOTA 9118 is a liquid polysilazane with a Si-N structure, the main functional bonds are Vi. It is specially for high temperature resistance coating systems. IOTA 9118 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 Low viscosity High temperature resistance Various curing methods Non-flammable after curing Anti-oxidation, anti-corrosion Easy to clean Good adhesion on the metal ceramic graphite materials
Technical index Appearance: light yellow transparent liquid Molecular weight (Mn): 1200-1400 Solid content: ≥99% (other contents could be customized) Density: 0.98g/cm3-0.99g/cm3 Ceramic density: 1.60-2.00 g/cm-3 Viscosity: 10cp-40cp Cracking threshold: 100µm+(coating thickness) Cured hardness: 6-7H Hydrophobic angle: 100°-105° Recommended temperature of varnish coating: <800ºC Recommended operating temperature with main coating: <1600ºC Ceramic yield (800ºC): 50%-60% Cured ceramic yield(800ºC): 60%-70% 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
Curing conditions 1. High temperature curing a. without catalyst:Heating temperature:250ºC-350ºC b. add Peroxide type thermal crosslinking agent:Heating temperature:120ºC-180ºC c. add platinum catalyst:Heating temperature: 80ºC-100ºC 2. UV curing:add Cleavage type photoinitiator The cured coating perform well in indoor environments, but the toughness of the coating will turn to be weak after 400ºC.
Notes The main functional group in IOTA 9118 is Vi, that will make the liquid to be light yellow, meanwhile the special additive in IOTA 9118 will get the same effect. But The cured coating will be colorless and transparent after the curing process(the additive will be released). IOTA 9118 will generate the coating film with no hardness, poor adhesion and transparency after 3 days cured in room temperature. IOTA 9118 could be cured with high temperature, it will reduce the heating temperature and curing time by adding the thermal crosslinking agent,which has no effect on coating hardness, color, adhesion and other properties. The UV cured coating of IOTA 9118 perform well in room temperature, but the high temperature resistance is poor as cured by UV, the coating will turn to be yellowing when the temperature up to 300ºC+. The operate temperature of IOTA 9118 coating is related to the film thickness. The higher thickness, the better protective performance, but it easy to crack in high temperature.
Cracking conditions IOTA 9118 cured product converted to amorphous ceramics by high temperature cracking, eventually get crystalline ceramics. It is amorphous product below 1400 ºC, begin to crystallize above 1400 ºC. Ceramic product composition has great relationship with cracking atmosphere, SiC and Si3N4 under nitrogen or argon; mainly Si3N4 under Ammonia; mainly SiOCN under air conditions. In addition, the cured product cracking is easily influenced by filler, and result affects the composition of the final ceramic product.
Compatibility 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 0-20ºC. 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.
Package Packed with metal container in 100ml, 1L and 5L.
Clean Proper cleaning methods are important, quickly wipe down the surface with acetone or mineral spirits after use. Once IOTA 9118 is cured, the coating cannot be washed away by solvent.
Precautions 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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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
Applications
Coatings
Adhesives
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 120ºC- 150ºC 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: <300ºC
Recommended operating temperature with main coating: <1000ºC
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
Notes
The heating curing process of IOTA 9150K is operated after surface dried, curing temp. is 60ºC-200ºC. The totally cured time will be shorten as the temp increasing.
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.
compatibility
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,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 0-20ºC.
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 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.
Package
Packed with metal container in 100ml, 1L and 5L.
Clean
Proper cleaning methods are important, quickly wipe down the surface with mineral spirits after use.
Once IOTA 9150K is cured, the coating cannot be washed away by solvent.
Precautions:
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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Audited Supplier 
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