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High active hydrogen content (≥4.5 wt%) enabling efficient hydrosilylation reactions.
Low viscosity (30–50 cSt at 25°C) for excellent processability and uniform dispersion.
Excellent thermal stability up to 200°C, supporting high-temperature curing processes.
High purity with minimal cyclic siloxane residues (<0.5%), ensuring consistent crosslinking performance.
Compatible with platinum-based catalysts and common functional silicones (e.g., vinyl-terminated PDMS).
Hydrosilylation-curable liquid silicone rubber (LSR) formulations.
Crosslinking agent in heat-cured silicone gels for electronics encapsulation.
Functional additive in pressure-sensitive adhesive (PSA) modifiers for enhanced cohesion.
Surface treatment agent for silica fillers in high-performance silicone elastomers.
Key component in optical-grade silicone resins for LED lens encapsulation.
| Chemical Type | Hydrogen-functional polydimethylsiloxane (H-PDMS) |
| Product Form | Clear, colorless liquid |
| Appearance | Transparent, slightly viscous liquid, no sediment or haze |
| Active Hydrogen Content | 4.5–4.9 wt% |
| Viscosity (25°C) | 30–50 cSt |
| Density (25°C) | 0.97–0.99 g/cm³ |
| Volatile Content (150°C, 2h) | <1.0% |
| Storage Stability | Stable for ≥12 months at 5–30°C in sealed containers |
Q1: What is the primary functional role of 1-000-50 High-Hydrogen Silicone Oil in silicone-based formulations?
A: It serves as a reactive crosslinker and hydrogen donor in addition-cure (platinum-catalyzed) silicone systems, enabling controlled network formation and enhanced thermal and mechanical stability.
Q2: How does 1-000-50 differ from standard methylhydrosiloxane-dimethylsiloxane copolymer oils?
A: It features a deliberately elevated active hydrogen content per molecule, resulting in higher crosslink density potential and improved efficiency in low-dosage applications—particularly where rapid cure response or high-temperature performance is required.
Q3: Is 1-000-50 compatible with platinum catalysts used in liquid silicone rubber (LSR) processing?
A: Yes—it is specifically designed for compatibility with standard platinum-based catalysts and exhibits good stability in formulated LSR and HTV systems prior to heat activation.
Q4: What handling precautions should be observed during storage and use?
A: Store in tightly sealed containers under dry, inert conditions away from moisture, strong acids, and heavy metal contaminants; exposure to ambient humidity may gradually reduce active hydrogen content over time.
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