CELANESE HOSTAFORM C 9021 TF5 Modified POM Resin

Physical Properties

• Density: Exhibits a density of 1.44 g/cc (0.0520 lb/in³), measured via ISO 1183, indicating a relatively high – mass material suitable for applications requiring durability.
• Water Absorption at Saturation: Absorbs up to 0.65% water at saturation per ISO 62, which may slightly affect dimensional stability in moist environments.
• Melt Flow: Features a melt flow rate of 8.5 g/10 min at 190 °C under 2.16 kg load (ISO 1133), ensuring smooth processing during injection molding.

Polymer Properties:

1. Base Material: Polyoxymethylene (POM) Copolymer
2. Modification Features:
   
   • 5% PTFE reduces friction for smooth sliding.
   • Resists solvents, fuels, and strong alkalis well.
   • Shows high thermal and oxidative stability.
   • Maintains integrity in humid conditions.

Applications:

Given its specialized properties, Celanese Hostaform C 9021 TF5 POM is primarily utilized in wear applications where friction and noise reduction are critical, and lubrication is either difficult or undesirable.

1. Sliding and Bearing Systems
   
   • Description: This material excels in applications where parts slide against each other or rotational movement occurs, often replacing metal components to reduce weight, noise, and the need for external lubrication.
   • Benefits: The PTFE content dramatically lowers the coefficient of friction, leading to reduced wear and extended part lifespan. This is particularly beneficial in “dry running” scenarios.
   • Data Point: The low friction properties help minimize stick-slip effects, which can generate undesirable noise, making it suitable for noise-sensitive assemblies.
   • Examples: Bearings, gears, conveyor system components, sliding mechanisms in furniture, window and door systems.
2. Automotive Industry
   
   • Description: Used in various automotive components that require smooth, quiet operation and high durability under varying conditions.
   • Benefits: Its wear resistance and chemical resistance to common automotive fluids (fuels, oils) make it ideal for demanding environments. 
   • Examples: Components in seat adjustment mechanisms, sunroof systems, gearshift linkages, HVAC  systems, and mirror systems where smooth motion and wear reduction are critical.
3. Precision Engineering
   
   • Description: For intricate parts requiring tight tolerances and consistent performance, even under moderate loads.
   • Benefits: Good dimensional stability, high stiffness, and excellent process robustness ensure high-precision molding.
   • Examples: Small gears, cams, and other moving parts in instruments, printers, and small appliances.
4. Consumer Goods and Appliances
   
   • Description: Employed in household appliances and consumer products where durability, smooth operation, and a clean appearance are important.
   • Benefits: Its inherent lubricity reduces operational noise and enhances the user experience.
   • Examples: Components in washing machines, dishwashers, coffee makers, and other devices involving moving parts or requiring low friction.
5. Other Specialized Applications
   
   • Sports Equipment: Components in ski bindings, fishing reels, and other sporting goods where smooth action and durability are essential.
   • Fluid Handling: Parts in pumps and valves that require good chemical resistance and low friction.