Technical Specifications of IOTA 3120 Methyl Phenyl Vinyl Silicone Rubber

IOTA 3120 Methyl Phenyl Vinyl Silicone Rubber is characterized by several technical specifications that define its performance. The product is colorless and has a phenyl content (Ph/Si) ranging from 5% to 40%. It has a molecular weight (Mw) between 400,000 and 800,000 and a specific gravity (25°C) of 0.99 to 1.05. The volatile content (150°C/3h) is ≤2%, ensuring low volatility and high thermal stability.
The performance of the raw rubber is influenced by factors such as vinyl content, vinyl position, and phenyl content. Higher vinyl content increases cross-linking, enhancing hardness and tensile strength while reducing elongation and compression set. The position and distribution of vinyl groups also affect the physical and mechanical properties of the vulcanized rubber. Phenyl content determines the functional properties, with low phenyl content offering the best low-temperature resistance, medium phenyl content improving damping performance, and high phenyl content enhancing radiation resistance.
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