In high-load servers operating in data centers, the "pump-out effect" of CPU thermal grease is a hidden killer leading to performance degradation and potential malfunctions. Phenyl Silicone Rubber, with its superior thermal stability and molecular structural strength, becomes the "ultimate defense" against this problem, building a durable thermal barrier for the chip.

The root cause of the "pump-out effect" lies in the microscopic shearing motion caused by thermal expansion and contraction. The significant difference in thermal expansion coefficients between the CPU silicon chip and the copper base plate of the heatsink results in a continuous "push-pull" shear force at the contact surface during frequent heating and cooling cycles, squeezing ordinary thermal grease from the core area to the edges like a pump. Phenyl Silicone Rubber introduces rigid phenyl groups into its molecular chain, acting like a high-strength "molecular skeleton" to give it mechanical strength and shear resistance far exceeding that of ordinary methyl silicone oil. This high-strength matrix firmly "locks in" the thermally conductive filler, forming a stable thermal conductivity network. Even under severe shear stress, the internal structure remains robust, effectively resisting material migration and displacement, and fundamentally curbing the "pumping-out effect."

In addition to shear resistance, phenyl raw rubber also possesses excellent wide-temperature stability. Its high-temperature resistance ensures that it does not soften or flow under the continuous high heat of server CPUs; while its excellent low-temperature resistance ensures that it remains flexible and elastic after the equipment is shut down and cooled, without cracking or hardening due to repeated thermal shocks. This "hot-resistant and cold-resistant" characteristic allows it to maintain stable interfacial contact over a long period, ensuring consistently efficient thermal conductivity. Simultaneously, the extremely low volatility and excellent oxidation resistance of phenyl raw rubber prevent silicone grease drying and performance degradation caused by oil separation, avoiding secondary contamination caused by material failure.

From molecular-level structural reinforcement to long-term stability of macroscopic performance, phenyl raw rubber, with its superior properties of "anti-pumping, heat and cold resistance, and non-volatile," has completely solved the long-term reliability problem of thermal grease for data center server CPUs. It is not only a key material for ensuring cool chip operation, but also an invisible cornerstone for safeguarding the stable and efficient operation of data centers and achieving green and energy-saving operation.