درجات البوليمرات السلفونية الشاملة (PSU/PPSU) التي نقوم بقولبتها
نقوم بمعالجة راتنجات البولي سلفون والبولي فينيل سلفون عالية النقاء من مصنعي البوليمرات الهندسية العالميين، وندعم معايير التوافق الحيوي الصارمة والتعقيم الحراري:
| فئة عائلة السلفون |
العلامة التجارية والدرجة النموذجية |
الخصائص والمزايا الرئيسية |
PSU
(Polysulfone) |
• Solvay Udel P-1700 (GP)
• Solvay Udel GF-120 (20% GF)
• BASF Ultrason S 2010 |
Amorphous polymer with a natural transparent light amber hue. Exceptional mechanical rigidity, high heat deflection, and FDA food-contact compliance. Ideal for medical dialyzer housings and commercial food trays. |
PPSU
(Polyphenylsulfone) |
• Solvay Radel R-5000 (GP / Clear)
• Solvay Radel R-5100 (Colored / Medical)
• BASF Ultrason P 3010 |
Extreme impact strength (virtually unbreakable), excellent hydrolytic stability, and chemical resistance. Capable of enduring 1,000+ steam autoclave sterilization cycles without degradation. Ideal for medical trays and infant bottles. |
PESU
(Polyethersulfone) |
• Solvay Veradel A-201 / A-301
• BASF Ultrason E 2010 |
Provides higher dimensional stability and mechanical properties at elevated temperatures than PSU. Inherently flame retardant with low smoke toxicity. Suited for automotive lamp reflectors and industrial sight glasses. |
Applicable Molding Processes for PSU/PPSU
Amorphous sulfone polymers require precise melt shear and mold temperature settings during molding:
| عملية القولبة |
ملاءمة العملية والتطبيق |
| حقن القوالب القياسي |
Excellent. Configured with specialized wear-resistant, high-temperature barrels to mold medical sterilizing trays and baby bottles. |
| قولبة الجدران الرقيقة |
Good. Allows high-injection pressure profiles to fill precise plumbing manifold tees and diagnostic cartridges. |
| قولبة الإدراج |
Excellent. The extremely low and isotropic shrinkage of amorphous sulfones prevents stress cracks when encapsulating brass hot-water pipe inserts. |
PSU & PPSU Manufacturing & Tooling Guide
Sulfone polymers have high melt viscosity and are highly sensitive to moisture and internal molding stress. Execution of exact technical parameters is essential:
- التجفيف المسبق: Sulfone resins are highly hygroscopic. Moisture causes cosmetic splay, bubbles, and loss of transparent optical quality. We dry raw material in desiccant hopper dryers at 135°C–150°C (275°F to 302°F) for 3–5 hours to moisture levels below 0.05%.
- درجة حرارة الذوبان: Handled between 320°C and 390°C (608°F to 734°F) for PSU, and 340°C to 390°C (644°F to 734°F) for PPSU. Requires machines equipped with high-temperature heating bands.
- Elevated Mold Temperature: Circulating oil heaters are used to maintain mold temperatures at 120°C–160°C (248°F to 320°F). Maintaining high mold temperatures is critical to prevent high internal molding stresses and weld-line visibility.
- Internal Stress Management: High-viscosity amorphous resins are prone to molded-in residual stresses. We implement progressive cooling cycles during DFM to avoid micro-cracks. Post-molding annealing is performed when specified.
- Low Isotropic Shrinkage: Due to their amorphous structure, PSU/PPSU exhibit low and highly uniform shrinkage (0.4% to 0.7%), ensuring excellent post-molding dimensional stability.
Key Application Industries for PSU & PPSU Molded Parts
- Medical & Biotech (ISO 13485 Certified): Autoclavable surgical instrument trays, sterilization cases, dental trial guides, anesthesia components, and hemodialyzer housings.
- Food Service & Plumbing: High-grade infant milk bottles, commercial food-service trays, steam oven pans, hot-water plumbing manifold tees, and elbow fittings.
- الفضاء والدفاع: Internal cabin lighting covers, service trays, protective electrical terminal insulators, and high-temperature wire brackets.
- Automotive Under-the-Hood (IATF 16949 Certified): Hot-water circulation sensor connectors, headlight reflectors, and high-temperature protective brackets.
