Precipitated silicone rubber, with its unique molecular structure and exceptional biocompatibility, has become an indispensable "invisible guardian" in the healthcare sector. Its core advantage lies in the uniform molecular chain distribution and smooth, pore-free surface achieved through precipitation processes, effectively preventing bacterial growth and tissue rejection reactions, ensuring safety in medical applications.

In implantable medical devices, the stability and durability of precipitated silicone rubber are particularly outstanding. For instance, the sealing rings of artificial heart valve frames must withstand constant blood flow impact and temperature fluctuations. Traditional materials are prone to aging and cracking, whereas precipitated silicone rubber, optimized with a vulcanization system and reinforcing fillers (e.g., fumed silica), achieves a tensile strength of 8-10 MPa and an elongation at break exceeding 500%. After 180 days of immersion in simulated body fluid at 37℃, its mechanical property degradation rate remains below 5%, ensuring long-term valve stability. Additionally, its low surface tension (contact angle < 90°) reduces thrombus formation risk, making it ideal for lubricating layers in artificial joints and cerebrospinal fluid shunts.

For non-implantable medical supplies, precipitated silicone rubber excels in flexibility and breathability. Medical catheters require a balance of softness and kink resistance; by adjusting the ratio of silicone oil to silicone resin, precipitated silicone rubber achieves a wall thickness uniformity within ±0.05 mm and a bending radius as small as 3 times the tube diameter, significantly reducing patient discomfort during insertion. Its breathability (moisture permeability > 2000 g/m²·24h) also makes it a preferred base material for wound dressings and scar patches, maintaining a moist healing environment while preventing fluid accumulation and accelerating recovery.

Notably, precipitated silicone rubber shows immense potential in personalized medicine. 3D printing enables customization of complex structures, such as tailored ear correction devices and nasal prostheses. By modeling patient CT data, these devices precisely match anatomical shapes, minimizing postoperative adjustments. For example, a brand of ear correction device combining precipitated silicone rubber with medical-grade TPU weighs just 2.3 grams per unit, improving comfort by 40% and withstanding repeated sterilization (50 cycles of 134℃ autoclaving without deformation), meeting stringent clinical demands.

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