ERTALYTE® TX PET-P (POLYETHYLENE TEREPHTHALATE POLYESTER)

ERTALYTE® TX PET-P (POLYETHYLENE TEREPHTHALATE POLYESTER)

Material Information

Ertalyte® TX PET-P is an unreinforced, semi-crystalline thermoplastic polymer based on the polyethylene terephthalate (PET-P). PET-P in general is known to have the best dimensional stability, excellent wear resistance, a low coefficient of friction, high strength and rigidity, excellent stain resistance, good chemical and abrasion resistance, and resistance to moderately acidic solutions. Because of its low moisture absorption rate, PET-P’s mechanical and electrical properties are virtually unaffected by moisture. The characteristic that sets Ertalyte® TX PET-P apart is its uniformly dispersed lubricant. This provides Ertalyte® TX PET-P with better wear and inertness over nylon and acetal products, and also a lower wear rate and lower coefficient of friction than unmodified polyesters such as PET-P or PBT. These characterstics make Ertalyte® TX PET-P ideal for use in applications that involve high pressure and velocity conditions. It also makes a good replacement in applications involving soft metal and plastic mating surfaces to reduce noise and wear better. Ertalyte® TX PET-P is available in an FDA approved light grey color in the form of rod and plate.

Application

  • Food processing
  • Equipment industries
  • Water and soft drink bottles
  • Process and test equipment manifolds
  • Carousels
  • Filter tracks
  • Rings, disks, rollers
  • Fuel pump components
  • Printing equipment

Properties

  • Superior dimensional stability
  • Excellent wear resistance
  • Low coefficient of friction
  • Very good chemical resistance
  • Low water absorption
  • Stain resistant
  • FDA compliant

Physical

Astm Test Method

PET-P Lubricated (Ertalyte®-TX)

Density (lb/in^3) D792 0.052
Specific Gravity D792 1.44
Water Absorption @ 24 hours (%) D570 0.06

Mechanical

Tensile Strength (PSI) D638 11,000
Tensile Modulus (PSI) D638 500,000
Tensile Elongation at Break (%) D638 5
Flexural Strength (PSI) D790 16,000
Flexural Modulus (PSI) D790 460,000
Compressive Strength (PSI) D695 15,250
Compressive Modulus (PSI) D695 400,000
Izod Impact (Notched), ft-lb/in D256 0.4
Rockwell Hardness D785 M94

Thermal

Coefficient of Thermal Expansion,
10^-5/°F
D696 4.5
Heat Deflection Temperature 264 psi, ºF D648 180
Melting Point, °F D3418 491
Continous Service Temp (Operating), °F  - 210
Thermal Conductivity, BTU-in/hr-ft² °F F433 1.9
Flammability Rating UL94 HB

Electrical

Dielectric Strength, Short Term,
(Volts/Mil) @ .125″ Thick
D149 -
Volume Resistivity (ohm/square) D257 >10^13
Dielectric Constant at 60HZ D150 -
Dissipation Factor at 60HZ D150 -

NOTE:

The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets. All values at 73°F (23°C) unless otherwise noted.