Silicone Rubber Cure Inhibitor (LSR/RTV-2)
Silicone cure inhibitors are used in platinum-catalyzed addition-cure silicone systems to extend pot life and working time at room temperature while maintaining fast cure at elevated temperatures. They function by temporarily complexing or deactivating the platinum catalyst below a threshold temperature. Common inhibitor types include ethynylcyclohexanol, diallyl maleate, and 2-methyl-3-butyn-2-ol, which are used at concentrations of 0.01–0.5% to tune working time from minutes to hours.
Technical Specifications
| appearance | Colorless to pale liquid or solid (type-dependent) |
| moisture (%) | ≤0.10 |
| specific gravity | 0.85–1.05 |
| boiling point (°C) | 100–180 (type-dependent) |
| active inhibitor content (%) | ≥95 (undiluted); 1–10% in silicone carrier |
Applications
- LSR two-component injection molding pot life extension
- RTV-2 mold-making silicone working time control
- Medical silicone compound shelf life extension
- Encapsulation silicone pour time management
- Customized cure profile tuning for complex molds
Key Features
- Tunes pot life from minutes to hours without affecting elevated-temperature cure
- Very low effective use level (0.01–0.5%)
- Multiple inhibitor types for different cure temperature requirements
- Compatible with all platinum catalyst systems and LSR formulations
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