Engineering Materials

PPS - Xytron™

Xytron is a high performance plastics compound based on linear polyphenylene sulfide that contributes to three key strengths:

  • Heat aging performance up to 240 °C
  • Chemical resistance at elevated temperature
  • Dimensional stability

Explore Xytron™

Xytron offers extreme chemical resistance, dimensional stability, and is intrinsically flame retardant. It also offers high stiffness up to a glass transition temperature of 90°C, with a continuous use temperature (CUT) between 240-260°C. Xytron is well suited for a broad range of Automotive, E&E and Specialized Industrial applications.

Xytron™ portfolio highlights

Hydrolysis resistance

This class of materials fits best for applications that are exposed to higher heat and need to maintain dimensional stability while being subjected to harsh chemicals.

Food contact and drinking water

This class of materials has global drinking water approvals, including NSF, KTW, WRAS and ACS; it also complies with FDA requirements for food contact applications. Ideal for use in higher pressure, hot water applications, these materials can be used at temperatures up to 95°C.

High impact

This class of materials enables applications that require high impact resistance or experience frequent temperature changes. These grades are engineered to solve brittleness problems common with standard PPS grades.

Properties

Hydrolysis resistance

It is known that PPS and glass are both good at hydrolysis resistance. But the interface of glass and PPS is the weak point for a glass reinforced PPS compound during the hydrolysis process. Thanks to good bonding technology, DSM G4080HR outperforms competitors’ materials. The retention strength is still around 80% of its initial value after 3,000 hours of aging at 135°C.

From the AFM chart, pictured to the right, it can be observed that both G4080HR and the competitor sample have good bonding between the PPS polymer and glass before the water/glycol aging test. After 3,000 hours of water/glycol aging, a clearance can be observed in the interface of the competitor sample, while it’s almost invisible for G4080HR. This shows that G4080HR has a higher retention strength than the competitor sample.

Long term heat aging performance

Due to its highly stable chemical bonds, PPS shows extremely good heat aging performance. The phenylene rings will form a carbon layer during the initial aging process. Later, it will protect the inner layer from oxidizing. It can easily be validated by the heat aging curve, pictured to the right, for G4010T. It is shown that only a limited reduction of tensile strength is observed at 150°C, while there is a bit more reduction at 230°C, yet reduction is still limited. Even after aging at 230°C for 6,000 hours, Xytron G4010T still shows > 60% tensile strength retention.

Dimension stability

Since there is no hydrophilic group in the PPS chemical structure, PPS shows almost ZERO moisture absorption. Even if the specimen of G4020DW-FC is soaked in 85°C water for 72 hours, the absorbed water is only 0.2%, which results in a dimension increase by approximately 0.03% in flow direction and 0.05% in transverse direction.

Creep resistance at an elevated temperature

Due to the high stiffness of PPS, Xytron shows very good creep performance even at elevated temperatures. From the G4024T creep curves, pictured to the right, it is shown that there is limited elongation change for 1,000 hours with loading 20Mpa at room temperature. Even at 150°C, elongation is only 0.6% after 1,000 hours with loading 20Mpa.

High purity

With Xytron linear PPS there is very limited leaching due to high purity levels. It can also be widely used in water management and hydrogen fuel cells.

Thermal conductivity

By using different types of additives, good electrical properties and dimension stability, plus long term high temperature resistance and hydrolysis resistance performance, can be combined in thermal conductive materials.

Most popular Xytron™ grades

Xytron™ G4024T

40% Glass Reinforced

Xytron™ is a high performance plastic compound of DSM Engineering Plastics, which is based on PPS (polyphenylene sulphide).

Xytron™ offers extremely good chemical resistance, dimensional stability, intrinsic flame retardancy and high stiffness.

Because of its outstanding properties, Xytron™ contributes to an excellent performance in many different applications.

  • Excellent Mold Release
  • Flame Retardant

Xytron™ G3010E

30% Glass Reinforced

Xytron™ is a high performance plastic compound of DSM Engineering Plastics, which is based on PPS (polyphenylene sulphide).

Xytron™ offers extremely good chemical resistance, dimensional stability, intrinsic flame retardancy and high stiffness.

Because of its outstanding properties, Xytron™ contributes to an excellent performance in many different applications.

  • High Impact
  • Food Contact Quality
  • Drinking Water Grade
  • Drinking Water Contact Grade

Xytron™ G3080R

30% Glass Reinforced

Xytron™ is a high performance plastic compound of DSM Engineering Plastics, which is based on PPS (polyphenylene sulphide).

Xytron™ offers extremely good chemical resistance, dimensional stability, intrinsic flame retardancy and high stiffness.

Because of its outstanding properties, Xytron™ contributes to an excellent performance in many different applications.

  • Flame Retardant
  • Excellent Mold Release
  • Low Flash

Xytron™ M6510A

65% Glass/Mineral Reinforced

Xytron™ is a high performance plastic compound of DSM Engineering Plastics, which is based on PPS (polyphenylene sulphide).

Xytron™ offers extremely good chemical resistance, dimensional stability, intrinsic flame retardancy and high stiffness.

Because of its outstanding properties, Xytron™ contributes to an excellent performance in many different applications.

  • Flame Retardant
  • Excellent Dimensional Stability

Xytron™ G4020DW-FC

40% Glass Reinforced

Xytron™ is a high performance plastic compound of DSM Engineering Plastics, which is based on PPS (polyphenylene sulphide).

Xytron™ offers extremely good chemical resistance, dimensional stability, intrinsic flame retardancy and high stiffness.

Because of its outstanding properties, Xytron™ contributes to an excellent performance in many different applications.

  • Drinking Water Grade
  • Food Contact Quality
  • Flame Retardant
  • Drinking Water Contact Grade

                        

Featured applications

Thermostat housing

Automotive |

Benefits Best long term performance in water/glycol Outstanding surface finish Reduced production costs due to early demolding (short cycle time) Application requirements Water/glycol resistance Feasibility of complex parts Excellent surface finish Dimensional stability High weldline strength Material properties Low flash Water/glycol resistant Rigid Outstanding surface quality Dimensional stability Easy to mold – easy processing High impact resistance

Alternator bridges

Automotive |

Application requirements Thermal stability Dimensional stability Less flash creation Surface finish Stiffness/strength Material properties Rigidity Best flow properties High impact resistance Outstanding surface quality Dimensional stability Easy to mold – easy processing

Engine block heater for electric generators

Energy |

Engine heaters heat engine coolant to allow for easy engine start-up regardless of ambient temperature.The engine block heater is required to operate in continuous contact with coolant at temperatures between 35 and 50°C.

Brushholders (electro motors)

Automotive | e-Drivetrain HV E-motors

Stanyl® PA46 also used in connectors, e-motor parts, bobbins, sensors, fuse boxes. Thermoconductive Stanyl XL-T (P968A) in use as well; ForTii® PA4T and Xytron™ PPS also materials to be used in electromotor applications

Contact us for more information

Direct and easy access to our broad portfolio of high-performance plastics: request a quote or order a sample. You can also simply ask us a (technical) question. 

More about Xytron™