|- Excellent chemical resistance||Â||- Essentially zero moisture absorption|
|- Machines to tight tolerances||Â||- Excellent alternative to PEEK at lower temperatures|
PPS (polyphenylene sulfide) products offer the broadest resistance to chemicals of any advanced engineering plastic. They have no known solvents below 392Â°F (200Â°C) and offer inertness to steam, strong bases, fuels and acids. Minimal moisture absorption and a very low coefficient of linear thermal expansion, combined with Quadrant's proprietary stress relieving processes, make these PPS products ideally suited for precise tolerance machined components. In addition, PPS products exhibit excellent electrical characteristics and are inherently flame retardant.
Proven applications include:
Techtron® PPS - Unlike reinforced PPS products, Techtron® PPS is easily machined to close tolerances. Techtron® PPS is ideal for structural applications in corrosive environments or as a PEEK replacement at lower temperatures. Techtron® PPS is off white in color and FDA compliant.
QUADRANT GF40 PPS - This product is the most recognized PPS. It is the compression molded analogue to Ryton R4 resin. It offers better dimensional stability and thermal performance than Techtron® PPS and maintains its strength to above 425Â°F (220Â°C).
QUADRANT BG PPS - Bearing-grade PPS is internally lubricated and carbon fiber reinforced, offering a low coefficient of thermal expansion and uncompromised chemical resistance. It is well suited for thrust or wear applications or when an electrically conductive material is required.
Techtron® HPV - exhibits excellent wear resistance and a low coefficient of friction. Techtron® HPV overcomes the disadvantages of virgin PPS caused by a high coefficient of friction, and of glass fibre reinforced PPS which can cause premature wear of the counterface in moving-part applications.
|- Excellent wear and frictional behavior||- Good electrical insulating and dielectric properties|
|- Excellent chemical and hydrolysis resistance||- Inherent low flammability|
|- Very good dimensional stability||- Excellent resistance against high energy radiation|
All Quadrant PPS products offer dimensional stability and strength at moderate temperatures. They are rated for continuous service to 425°F (220°C), but strength and stiffness vary based on temperature and grade. Unreinforced Techtron® PPS is generally not recommended for wear applications. Products like Techtron® HPV, Torlon® PAI, or Ketron® PEEK are better solutions for wear applications. When designing with Quadrant compression molded grades, it is important to note its relatively low elongation and impact strength.