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In LED encapsulation, high-performance silicone rubber, and optical-grade silicone materials, the reactivity and molecular structure of the crosslinker directly affect light transmittance, mechanical properties, and reliability. IOTA 261 Hydrogen-Containing MQ Resin, with its unique MQ resin backbone and controllable hydride content (0.65%–0.9%), offers an ideal choice for addition-cure crosslinking systems that demand compatibility, reactivity, and optical transparency.
IOTA 261 is a hydrogen-containing MQ silicone resin featuring the characteristic three-dimensional cage structure of MQ resins. With a broad molecular weight distribution (100–6000) and adjustable viscosity (10–900 cst), it can be flexibly tailored to meet different formulation requirements. It is widely used in LED encapsulation adhesives, addition-cure liquid silicone rubbers, and optical-grade silicone materials.
| Feature | Description |
|---|---|
| MQ resin backbone | Provides good film-forming ability, thermal stability, and mechanical reinforcement |
| Adjustable hydride content (0.65%–0.9%) | Precise control over crosslinking density – optimizes cured properties |
| Refractive index 1.42 | Matches refractive index of common LED encapsulation resins – maintains optical transparency |
| Broad molecular weight range (100–6000) | From oligomers to higher polymers – adapts to different system requirements |
| Adjustable viscosity (10–900 cst) | Allows balanced design of flowability and reactivity |
| Parameter | Value |
|---|---|
| Product Code | IOTA 261 |
| Molecular Weight | 100 – 6000 |
| Viscosity (cst) | 10 – 900 |
| Hydride Content (wt.%) | 0.9 – 0.65 |
| Refractive Index | 1.42 |
| Application Area | Specific Use | Core Value |
|---|---|---|
| LED Encapsulation Materials | Crosslinker/reinforcing agent for high-refractive-index LED encapsulation adhesives | Improves light transmittance, heat aging resistance, and sulfur resistance |
| Crosslinker | Crosslinking component for addition-cure liquid silicone rubber and silicone gels | Controls crosslinking density – optimizes hardness and elasticity |
| Optical-Grade Silicones | Silicone resins for optical lenses and light guide plates | Maintains high transparency – enhances thermal stability |
IOTA 261 – Channeling the power of hydride-functional MQ to inject precisely controllable reactivity into LED encapsulation and crosslinking systems.
