OH-81 Hydroxy-Terminated Fluorosilicone Fluid
Silico® OH-81 Hydroxy-Terminated Fluorosilicone Fluid is a reactive fluorinated silicone polymer with hydroxyl functional groups at both chain ends. It combines the unique properties of fluorosilicones—such as excellent chemical resistance, wide temperature performance, and low surface energy—with enhanced reactivity for crosslinking systems. Ideal for use in specialty elastomers, coatings, and sealants.
Technical Data
Silico® OH-81 Hydroxy-Terminated Fluorosilicone Fluid is a low molecular weight polymer featuring reactive hydroxyl end groups. The incorporation of trifluoropropyl groups into the siloxane backbone imparts exceptional resistance to chemicals, oils, and solvents, along with excellent lubricity, low surface tension, and a low refractive index. This versatile fluorosilicone is ideal for use in crosslinking systems and functions as an effective structure-control additive, particularly for surface treatment of silica fillers. It is widely used in specialty elastomers, high-performance coatings, and advanced sealants requiring long-term stability under harsh environmental conditions.
Technical Data
| Property | Unit | OH-81-FS8014L | OH-81-FS8014H |
|---|---|---|---|
| CAS NO. | 68607-77-2 | ||
| Appearance | — | Colorless to light yellow transparent liquid | |
| Density (25°C) | g/cm³ | 1.25 ± 0.03 | 1.15 ± 0.03 |
| Viscosity (25°C) | mPa·s | 80–200 | 1,000–100,000 |
| pH Value | — | 7.0–9.0 | 6.0–7.5 |
| Flash Point | °C | ≥240 | ≥240 |
| Volatility (200°C / 4h) | % | <5 | <5 |
| Refractive Index (25°C) | — | 1.390 ± 0.01 | 1.396 ± 0.01 |
Applications
Silico® hydroxy-terminated fluorosilicone fluid is a high-performance, reactive polymer designed for advanced industrial applications. It offers excellent chemical, solvent, and fuel resistance, making it ideal for use in:
Fluorosilicone rubber processing as a structural control additive to prevent crepe hardening and undesired rubber structuring.
Advanced elastomer formulations, enhancing mechanical properties and long-term durability under harsh conditions.
Crosslinkable fluorosilicone elastomer systems, where its hydroxyl functionality supports efficient curing and network formation.
Specialty coatings and adhesives that demand resistance to fuels, solvents, and chemicals while maintaining flexibility and adhesion.
Surface treatment of low surface energy substrates, including silica fillers, to improve compatibility and dispersion.
Reactive additive in high-performance sealants and potting compounds, providing enhanced chemical resistance, weatherability, and stability in extreme environments.
This versatile material is ideal for use in aerospace, automotive, electronics, and chemical processing industries.
Packaging and Storage
Silico® Hydroxy-Terminated Fluorosilicone Fluid is available in:
1kg bottles
5kg and 25kg plastic drums
200kg steel drums
Store in a cool, dry place in the original unopened container. Shelf life is 12 months from the date of manufacture.
All technical data provided is based on current knowledge and experience. Users must test product suitability for intended applications.
No warranties are expressed or implied. Silico® assumes no liability for incidental or consequential damages.
Jessica G.
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