Chemical Name: Organopolysilazane
Chemical Category: Organopolysilazane Resin
CAS NO.: 475645-84-2
Product Description
IOTA 9283 is a methyl- and fluorine-functional liquid organopolysilazane designed for room-temperature curable hydrophobic coatings. The material contains Si-NH-Si bonds that react with moisture and oxygen at ambient conditions, enabling self-curing and strong adhesion to substrate hydroxyl groups. It forms a three-dimensional crosslinked network after curing, providing excellent mechanical performance. Fluorine groups impart outstanding hydrophobicity while maintaining transparency with visible light transmittance above 95%. IOTA 9283 has low viscosity, good adhesion, and can be applied by brushing, dipping, spraying, or wiping on metals, alloys, glass, coatings, and plastics such as PP, PC, PVC, and PMMA.
Technical Specifications
Appearance: Colorless to light yellow transparent liquid
Molecular Weight: 900–1000
Purity: 10% (customizable)
Density: 0.68 g/cm³
Viscosity: 2–5 cp
Resin Crack Threshold: >100 µm coating
Curing Method: Room temperature self-curing
Surface Dry Time: 10–15 minutes
- Full Cure Time: >24 hours at room temperature
- Heat curing at 120–150 °C for 2–5 hours
Cured Hardness:
- 12h at RT: 4H
- 24h at RT: 6H
Water Contact Angle: 110°–120°
Topcoat Recommended Temperature: <300 °C
Formulated Coating Recommended Temperature: <1000 °C
Chemical Masking: Good (O₂, H₂O, and other gases)
Linear Shrinkage: <1%
Visible Light Transmittance: >95%
Metal Adhesion (Cross-cut): Grade 0
Storage: 1 year unopened
Performance
Low viscosity
Hydrophobic cured coatings
Short curing time
Multiple curing methods
Oxidation and corrosion resistant
Easy to clean
Good adhesion to metals and ceramics
Applications
Coatings
Adhesives
Flame-retardant composites
Polymer-based composites
Glass and tooling
Hydrophobic and low surface energy applications
Compatibility
Soluble in most non-polar solvents such as alkanes, ethers, ketones, and esters
Insoluble in certain alcohol ethers such as diethylene glycol dimethyl ether, diethylene glycol dibutyl ether, tetraethylene glycol butyl ether
Compatible with epoxy silanes and organosilicone resins; mixing can shorten curing time and improve hardness.
Store
Use in a dry, cool, ventilated environment away from heat and fire.
Wear gloves and mask. Avoid exposure of uncured material to fire, moisture, or water.
Seal container immediately after use. Purge with N₂/Ar before sealing for storage.
Unused pre-mixed material cannot be recycled and must be disposed of according to local regulations.
Products beyond shelf life can only be used if tested and qualified.
Packaging
100mL, 1L, 5L sealed metal containers
Cleaning
Clean tools immediately after use with acetone or solvent oil.
Once cured, IOTA 9283 coatings cannot be removed with solvents.
Precautions
Store in a dry, cool, ventilated area away from heat and fire.
Keep containers tightly sealed.
Storage temperature 0–20 °C, shelf life 12 months.
