Poly(methylphenylsiloxane) is a siloxane-based polymer featuring alternating silicon-oxygen backbone chains with methyl and phenyl organic substituents, combining properties of both silicone elastomers and rigid engineering polymers. This material is used in high-temperature applications, electrical insulation systems, and specialized coatings where thermal stability and chemical resistance are critical—particularly in aerospace, electronics, and demanding industrial environments where conventional organic polymers degrade. The phenyl groups enhance thermal and oxidative resistance compared to purely methyl-substituted siloxanes, making it valuable for components that experience sustained elevated temperatures or harsh chemical exposure.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | -123.1 | °F | — |