Phenyl HTV (PMQ) Silicone Rubber
Silico® PVMQ Silicone Rubber is a high-quality HTV elastomer with phenyl and vinyl groups. It offers excellent low-temperature flexibility, thermal aging resistance, and durability against radiation and oxidation, ideal for aerospace, electronics, cryogenics, and defense.
Product Overview
Silico® PVMQ Silicone Rubber is a premium-grade, high-consistency heat vulcanized (HTV) elastomer, formulated with both phenyl and vinyl functional groups. This hybrid modification enhances its ultra-low temperature flexibility, thermal aging stability, and resistance to radiation and oxidation, making it the ideal material for aerospace, electronics, cryogenic, and defense applications.
Key Technical Specifications
| Property | Typical Values |
|---|---|
| Operating Temperature | –100 °C to +250 °C (short-term up to 300 °C) |
| Phenyl Content | 5–25 mol% |
| Vinyl Content | 0.10–0.35 mol% |
| Hardness (Shore A) | 30–60 (adjustable) |
| Elongation at Break | 700–1000% |
| Tear Strength | 30–40 kN/m |
| Compression Set (200 °C) | ≤35% (24 h) |
| Dielectric Strength | ≥20 kV/mm |
Values may vary slightly depending on formulation and grade.
Processing & Curing Options
Curing Systems:
Peroxide-cured: Standard, high mechanical integrity
Platinum-cured: Optional, for low volatility and medical/food-grade compliance
Processing Methods:
Compression molding, injection molding, extrusionMaterial Form:
High-viscosity transparent to translucent gum, customizable with pigments or fillers
Key Advantages
Ultra-Low Temperature Performance: Maintains elasticity below –100 °C without embrittlement
Radiation & Thermal Resistance: Outstanding performance in high-radiation or high-heat environments
Enhanced Processability: Excellent flow, moldability, and dimensional stability during processing
Flame Retardant Grades Available: Self-extinguishing options for aerospace and safety-critical applications
Electrical Insulation: High dielectric strength for electronics and cables
Typical Applications
Aerospace: Seals, gaskets, insulation for high-altitude and variable-pressure conditions
Cryogenics: Flexible connectors and components for ultra-low temperature use
Electronics: Insulating parts exposed to radiation, heat, or mechanical stress
Defense: Components in missile systems, avionics, and high-performance sensors
Specialized Molding: Shock-absorbing, anti-vibration, and flame-retardant molded parts
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