• Flexural Strength: 88.9 MPa (12,900 psi, ASTM D790).
  Therefore, PPO provides excellent mechanical strength and rigidity in plastic injection components manufacturing, making it suitable for precision parts that bear high loads.
  
  If you want to know other materials such as PP, PE, PET, PA, PC, and PS, please click to view another article: "injection molding material selection guide 1"
  
  

Advantages of PPO in medical injection molding

In the field of medical injection molding, PPO is widely used in medical device housings, handles, and precision components due to its low moisture absorption, excellent chemical resistance, and electrical insulation properties.

• Water Absorption: Only 0.07% (24 h, ASTM D570), ensuring no deformation of medical products in moist heat sterilization environments.

• Dielectric Constant: 2.7–3.2 @ 60 Hz (ASTM D150); Breakdown Strength: 27.6 kV/mm (ASTM D149).

• Vicat Softening Point: Approximately 150 °C (ASTM D1525), suitable for high-temperature sterilization.
  As such, PPO not only meets biocompatibility and safety requirements in medical injection molding, but it also ensures long-term stability for electrical control components.

Combining PPO with the injection moulding large parts Process

Despite having a high glass transition temperature of about 215 °C, modern high-temperature injection molding machines can precisely control process parameters to easily achieve injection moulding large parts.

• Heat Deflection Temperature (HDT): 137 °C @ 0.45 MPa; 125 °C @ 1.8 MPa (ASTM D648).

• Long-Term Use Temperature: Up to 200 °F (93.3 °C).

• Processing Temperature Range: 260–300 °C.
  This stability enables efficient production of large electrical enclosures, cabinets, and other injection moulding large parts, ensuring dimensional accuracy and structural strength in the final product.

  PPO’s Extensive Use in automotive injection

  In the automotive injection field, PPO, known for its heat resistance, oil resistance, flame retardancy, and impact resistance, is the ideal material for dashboard components, fuse boxes, and electronic module housings.

  • Continuous Use Temperature: Up to 104 °C (220 °F).

  • Izod Impact Strength: 1.55 J/cm (ASTM D256).

  • UL94 Flame Rating: V-0 @ 1/4″.
    Therefore, whether in high heat or oil mist and vibration environments in engine compartments, PPO guarantees the safety and performance stability of automotive injection parts.

    PPO’s Position in plastic injection components Production

    PPO occupies a crucial position in the manufacturing of various plastic injection components: Its excellent dimensional stability and surface finish ensure a high first-pass yield, reducing the need for post-processing and assembly costs; in custom plastic parts projects, PPO’s predictable rheological properties and consistent physical parameters help customers quickly achieve product validation and mass production; compared to other high-performance plastics, PPO offers a better cost-to-performance ratio, making it a preferred material in industrial, automotive, and medical fields.

    Typical Products Suitable for PPO Material

    • Medical Device Housings and Precision Components: Electric surgical knife housings, imaging device parts

    • Large Electrical Enclosures and Cabinets: High-temperature electrical control boxes, distribution boxes

    • Automotive Internal Structural Parts and Electronic Components: Fuse boxes, electronic module housings

    • High-Precision Industrial Parts: High-temperature test fixtures, industrial sensor housings
      In these scenarios, PPO maintains exceptional longevity and stable performance, making it a reliable choice for medical injection molding, automotive injection, and injection moulding large parts projects.

    JSJM has years of experience using PPO materials in medical injection molding, automotive injection, injection moulding large parts, and various plastic injection components projects, offering one-stop custom services from material selection, mold design, to mass production. Contact us today to co-create the next high-performance plastic innovation!