In the field of vibration reduction and noise control for precision instruments, materials are required to efficiently dissipate mechanical energy within specific temperature ranges. Conventional silicone rubber often falls short of meeting high-precision vibration reduction demands because its damping factor (tanδ) peak is typically too low, resulting in insufficient energy dissipation efficiency. Phenyl raw rubber—distinguished by its unique "segmental motion hysteresis" and "multiple relaxation mechanisms"—acts as a "molecular motion regulator" for damping performance, achieving a dynamic conversion from "elastic energy storage" to "viscous energy dissipation" at the microscopic level.

The key to phenyl raw rubber's ability to elevate the damping factor peak lies in the "steric hindrance effect of its phenyl groups" and the "regulation of its glass transition temperature (Tg)." When external forces are applied to rubber materials, the molecular chain segments of conventional silicone rubber tend to follow stress changes too closely, causing energy to be stored primarily in an elastic form. In phenyl raw rubber, however, the rigid structure of the phenyl groups acts like a "motion damper" installed on the molecular chains; this generates internal friction during segmental motion, causing the chain relaxation process to lag behind the changes in stress. This "stress-strain hysteresis" converts mechanical energy into thermal energy for dissipation, thereby boosting the damping factor peak to a value exceeding 0.8. Furthermore, by precisely adjusting the phenyl content (typically between 20% and 40%), the Tg can be accurately controlled within the range of -50°C to 50°C, ensuring that the material consistently remains within its "high-dissipation zone" across the target operating temperature range.

Moreover, the exceptional "crosslinking network compatibility" of phenyl raw rubber enables it to work synergistically with fillers to enhance damping performance. The vinyl groups within its molecular chains form a "physico-chemical" dual crosslinking structure with the silanol groups on the surface of white carbon black (silica), thereby constructing a multi-scale relaxation network. Under dynamic loading, the continuous breakdown and reconstruction of this filler network further dissipate energy, extending the temperature range in which tanδ remains ≥ 0.3 to a remarkable 100°C—spanning the entire operating range of -50°C to 50°C. Ranging from segmental lag at the molecular level to high-damping performance at the macroscopic scale, phenyl raw rubber resolves the low-damping bottleneck inherent in silicone rubber through a synergistic mechanism of "steric hindrance regulation and Tg matching." It serves not only as a critical material for vibration reduction and noise suppression in precision equipment but also acts as an invisible converter for the efficient dissipation of vibrational energy.