PEEK-Victrex PEEK 450G
Reemplazar metales pesados como titanio, acero y aluminio en entornos aeroespaciales extremos y médicos implantables requiere un polímero de estabilidad térmica y química incomparable, que el PEEK 450G de Victrex ofrece a través de su matriz de polieteretercetona sin modificar y de alta viscosidad. Con una temperatura de operación continua de 260°C y un punto de fusión de 343°C, este grado de alto rendimiento proporciona una resistencia a la fatiga, resistencia al desgaste e insolubilidad química casi universal sobresalientes. Jucheng Precision, que opera bajo estrictos marcos certificados ISO 9001, ISO 13485 e IATF 16949, se especializa en el moldeo de Victrex 450G. Respaldados por barriles de cerámica de alta temperatura y controladores de calentamiento de moldes por aceite presurizado, garantizamos una alineación completa de la fase semicristalina, entregando componentes estructurales verificados por CMM Zeiss.
Victrex PEEK 450G Mechanical Strength & Thermal Limits
Victrex™ PEEK 450G is an unreinforced, medium-viscosity semi-crystalline polyetheretherketone resin, certified to deliver unmatched mechanical stiffness and continuous thermal resistance under ASTM/ISO standards:
| Propiedad de ingeniería | DAM Spec Value (ISO/ASTM) | Aerospace/Medical Advantage |
|---|---|---|
| Continuous Service Temp | 260 °C (UL 746B RTL Rating) | Maintains robust mechanical strength and prevents polymer creep under high heat, allowing for lightweighting of deep-downhole oil and aerospace brackets. |
| Módulo de flexión | 4,100 MPa (ISO 178) | Delivers extremely high mechanical stiffness and anti-deflection strength, ideal for structural wear rings and rotating gears. |
| Biocompatibility & Inertness | FDA & USP Class VI Compliant | Completely chemically inert, non-toxic, and resistant to repeated autoclave steam cycles, perfectly suited for surgical trial implants and dental healing caps. |
Extreme Environment Processing Targets for Victrex 450G
With its high viscosity and semi-crystalline chemistry, Victrex PEEK 450G requires high thermal energy profiling to mold successfully:
| Critical Operating Condition | Process Suitability & Design Focus |
|---|---|
| Structural Oil Seals & Thrust Washers | Excellent. Configured with high-temperature oil controllers to mold self-lubricating automotive washers, subsea connectors, and wear-resistant bushings. |
| Biocompatible Surgical Trial Implants | Excellent. Run inside our certified ISO Class 7/8 cleanrooms to mold highly complex orthopedic target caps and dental healing screws. |
| Under-the-Hood Sensor Bodies | Excellent. Well-suited for heavy-duty connector enclosures, smart-grid isolators, and aviation cable clamps requiring low outgassing. |
Victrex PEEK 450G High-Temperature Tooling Matrix
Molding an unreinforced, high-viscosity semi-crystalline polymer like PEEK 450G requires extreme thermal boundaries to secure proper crystalline development:
Calentamiento de Molde por Aceite Presurizado a Alta Temperatura
To secure the proper semi-crystalline phase (giving PEEK its signature opaque beige color and stiffness), mold temperatures must be maintained continuously at 160°C–200°C (320°F to 392°F) using oil-heating controllers. Cold molds cause the melt to freeze amorphous, turning parts translucent brown and mechanically weak.
Hardened S136 Mirror-Polished Tooling
Due to the extreme clamping pressures and melt velocities of PEEK 450G, Jucheng’s tooling division uses hardened, corrosion-resistant S136 stainless steel molds. We heat-treat cavities to 52 HRC and design generous draft angles (minimum 1.5° to 2.0°) to ensure clean part release.
Ceramic Barrel Melt Management
Molding is processed between 360°C and 400°C (680°F to 752°F). Jucheng utilizes specialized, ceramic heater bands and bi-metallic barrels on our presses. Exceeding 420°C can result in chemical chain fracturing and polymer degradation.
Pre-Secado Extendido con Desecante
While PEEK absorbs minimal water, moisture causes hydrolytic splay and weld line degradation. We desiccant-dry PEEK 450G resin at 150°C (302°F) for 3–4 hours, keeping internal moisture below 0.02% to secure optimal molecular bonds.
Key Application Fields for PEEK-Victrex PEEK 450G
- Medical & Dental Technology (ISO 13485 Certified): Spinal fusion cages, temporary dental healing caps, orthopedic trial instruments, drug delivery cassettes, and surgical instrument parts.
- Aerospace & Semiconductor Infrastructure: Wafer carriers, chemical etching rings, vacuum chamber connectors, lightweight engine brackets, and high-frequency cable clamps.
- Trenes de potencia y fluidos automotrices (IATF 16949): Arandelas de empuje dinámicas de alto desgaste, anillos de sellado de transmisiones automáticas, engranajes de columna de dirección y accesorios especializados para fluidos.
Propiedades
| Densidad | 1.3 g/cm³ |
| Temperatura de fusión | 343 °C |
| Temperatura de Transición Vítrea (Tg) | 143 °C |
| Módulo de tracción | 3,700 - 3,800 MPa |
| Esfuerzo de tracción en fluencia | 100 MPa |
| Deformación por Tracción en Fluencia | 5 % |
| Deformación Nominal a la Rotura | 45 % |
| Módulo de flexión | 4,100 MPa |
| Resistencia a la flexión | 165 - 170 MPa |
| Resistencia al impacto Charpy con entalla (23°C) | 5 kJ/m² |
| Resistencia al impacto Izod con muesca (23°C) | 5,5 kJ/m² |
| Temperatura de deflexión bajo carga (HDT @ 1.80 MPa) | 152 °C |
| Contracción de moldeo lineal | 1.00 - 1.30 % |
| Tamaño Máximo de Pieza | 800 x 600 mm |
| Tamaño Mínimo de Pieza | 0.5 x 0.5 mm |