IOTA Silicone Oil（Anhui） Co., Ltd.
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In the field of LED encapsulation, the refractive index, heat resistance, and crosslinking efficiency of encapsulation materials directly affect the light extraction efficiency and long-term reliability of devices. IOTA 207 Methyl Phenyl Hydrogen Silicone Resin, with its high refractive index of 1.54, excellent Si-H reactivity, and colorless and odorless reaction characteristics, becomes an ideal crosslinker for manufacturing high refractive index phenyl LED encapsulation silicone and high-temperature resistant liquid addition-cure silicone rubber.
Technical Breakthrough and Industry Value
IOTA 207 is synthesized using phenyl monomers as raw materials through a special post-treatment process. The molecule contains active Si-H bonds, which readily undergo addition reactions with vinyl compounds in the presence of platinum catalysts. Its high refractive index of 1.54 provides good optical matching with LED chips, effectively improving light extraction efficiency and reducing optical loss.
As a crosslinker, this product features low reaction temperature, low catalyst usage, complete reaction, and is colorless and odorless, ensuring that the encapsulation adhesive does not generate bubbles or discolor during curing, maintaining high transparency and excellent optical properties.
Core Advantages
High Refractive Index: Refractive index of 1.54, good optical matching with LED chips, improving light extraction efficiency
Highly Active Si-H Bonds: Low reaction temperature, low catalyst usage, high crosslinking efficiency
Colorless and Odorless: No by-products during curing, maintaining high transparency of encapsulation adhesive
Excellent Film-Forming Properties: Forms a dense protective layer after curing, protecting chips from environmental erosion
Technical Specifications
| Parameter | Specification |
|---|---|
| Appearance | Colorless transparent liquid |
| Viscosity (25°C) | 13000-16000 mPa·s |
| Hydrogen Content | 0.27-0.31% |
| Refractive Index | 1.54 |
| Solid Content | ≥96% |
Application Methods
Used as a crosslinker for high refractive index phenyl LED encapsulation silicone
Used in crosslinking systems for high-temperature resistant liquid addition-cure silicone rubber
Suitable for COB, SMD, high-power LED, and other encapsulation forms
Industry Applications
General lighting LED encapsulation
Automotive LED, display LED encapsulation
UV LED, infrared LED, and other special device encapsulation
IOTA 207, with the Intelligence of High Refractive Index and the Capability of High Reactivity, Provides Reliable Crosslinking Assurance for LED Encapsulation.
