CELANESE HOSTAFORM C 9021 GV1/20 XGM Modified POM Resin

Physical Properties

• Density: Has a density of 1.57 g/cc (0.0567 lb/in³) as per ISO 1183, indicating a reinforced material with enhanced stiffness.
• Melt Flow: Displays a melt flow of 4.0 g/10 min at 190 °C/2.16 kg (ISO 1133), requiring careful processing to avoid flow issues.

Polymer Properties:

1. Base Material: Polyoxymethylene (POM)
2. Reinforcement: Glass fiber (20% by weight), PTFE reinforced
3. Modification Features:
   
   • Glass fiber reinforcement significantly boosts rigidity and mechanical strength.
   • PTFE addition provides low – friction properties, reducing wear and tear.
   • Exhibits excellent chemical resistance to common solvents and chemicals.
   • Good thermal stability for consistent performance under temperature variations.
   • Suitable for injection molding with good flow characteristics for complex part designs.

Applications:

• Automotive Engineering
  Hostaform® C 9021 GV1/20 XGM is widely used in automotive applications where high strength, low wear, and durability are critical. Its properties make it suitable for:
  • Gears and Bearings: The low-friction PTFE component ensures smooth operation and extended lifespan in gear systems and bearing assemblies.
  • Structural Components: Used in under-hood components like brackets, housings, and clips that require high rigidity and resistance to heat and automotive fluids (e.g., fuels, oils).
  • Sliding Elements: Ideal for parts like window regulator guides and seat adjustment mechanisms, where low wear and smooth sliding are essential.
  • Connectors and Fasteners: Provides dimensional stability and strength for precision connectors exposed to vibration and thermal cycling.
    Example: The material is used in automotive timing chain tensioners, where its low wear and high strength ensure reliable performance over extended periods.
• Precision Engineering
  In precision engineering, the material’s dimensional stability and mechanical strength are critical for producing high-precision components:
  • Precision Gears and Cams: The combination of glass fiber reinforcement and PTFE ensures low wear and high accuracy in small, intricate gears and cam mechanisms.
  • Tooling Components: Used in jigs, fixtures, and mold inserts where high hardness and resistance to deformation are required.
  • Bearings and Bushings: Offers excellent wear resistance for high-load, low-speed bearing applications in machinery.
    Example: In industrial automation equipment, Hostaform® C 9021 GV1/20 XGM is used for precision guide rails that demand low friction and high rigidity.
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• Industrial Applications
  The material’s robustness and wear resistance make it ideal for various industrial applications:
  • Conveyor Systems: Used in rollers, guides, and chain components where low friction and high strength reduce maintenance needs.
  • Pumps and Valves: Suitable for components exposed to aggressive chemicals and high mechanical loads, such as valve seats and pump impellers.
  • Wear Strips and Guides: Employed in machinery where sliding surfaces require durability and minimal friction.
    Example: In packaging machinery, Hostaform® C 9021 GV1/20 XGM is used for wear strips that guide moving parts, ensuring long service life and reduced downtime.

Processing Considerations

• Injection Molding:
  • The material is optimized for injection molding, allowing for complex geometries with minimal shrinkage.
  • Recommended mold temperatures are 80–120°C, with melt temperatures of 180–200°C.
• Drying: General drying is not necessary due to low moisture absorption. However, if exposed to water or high humidity, drying at 100–120°C for 3–6 hours in a recirculating air dryer is advised.
• Design Benefits: The material supports snap-fit designs, thin-walled parts, and high-precision components due to its flowability and dimensional stability.

Compliance and Certifications

• Automotive Standards: Meets Federal Motor Vehicle Safety Standard (FMVSS) requirements for automotive applications.
• Consumer Goods: Complies with recommendation XXXIII for consumer goods by BgVV, ensuring safety for household applications.
• Environmental Regulations: RoHS, PFOS, and PFOA compliant, making it suitable for environmentally sensitive applications.
• UL Yellow Cards: Certified for safety and quality, ensuring performance in demanding applications.