PEEK-Victrex PEEK 450G

Thay thế kim loại nặng như titan, thép và nhôm trong môi trường hàng không vũ trụ khắc nghiệt và y tế cấy ghép đòi hỏi một loại polymer có độ ổn định nhiệt và hóa học vượt trội, mà PEEK 450G của Victrex cung cấp thông qua nền polyether ether ketone không biến tính, độ nhớt cao. Với nhiệt độ làm việc liên tục 260°C và điểm nóng chảy 343°C, cấp hiệu suất cao này cung cấp khả năng chống mỏi, chống mài mòn và gần như không hòa tan trong hầu hết các hóa chất. Jucheng Precision, hoạt động theo khuôn khổ chứng nhận nghiêm ngặt ISO 9001, ISO 13485 và IATF 16949, chuyên ép phun Victrex 450G. Được hỗ trợ bởi xi lanh gốm nhiệt độ cao và bộ điều khiển gia nhiệt khuôn bằng dầu áp suất, chúng tôi đảm bảo sự liên kết pha bán tinh thể hoàn toàn, mang lại các bộ phận kết cấu được kiểm tra bằng CMM Zeiss.

High-precision-injection-molded-beige-semi-crystalline-PEEK-thrust-washers-and-seal-rings-made-from-Victrex-PEEK-450G

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:

Engineering Property 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.
Mô đun uốn 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:

High-Temperature Pressurized Oil Mold Heating

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.

Extended Desiccant Pre-Drying

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.
  • Automotive Powertrains & Fluids (IATF 16949): High-wear dynamic thrust washers, automatic transmission seal rings, steering column gears, and specialized fluid fittings.

Properties

Mật độ 1.3 g/cm³
Nhiệt độ nóng chảy 343 °C
Glass Transition Temperature (Tg) 143 °C
Mô đun kéo 3,700 - 3,800 MPa
Ứng suất kéo tại điểm chảy 100 MPa
Độ giãn dài khi chảy dẻo 5 %
Nominal Strain at Break 45 %
Mô đun uốn 4,100 MPa
Độ bền uốn 165 - 170 MPa
Độ bền va đập Charpy có khía (23°C) 5 kJ/m²
Độ bền va đập có khía Izod (23°C) 5.5 kJ/m²
Heat Deflection Temperature (HDT @ 1.80 MPa) 152 °C
Độ co rút khuôn tuyến tính 1.00 - 1.30 %
Kích thước chi tiết tối đa 800 x 600 mm
Kích thước chi tiết tối thiểu 0.5 x 0.5 mm