Polyphenylenesulfone (PPSF or PPSU) is a high performance polymer made of aromatic rings linked by sulfone (-SO2-) groups.
Production Several kinds of polysulfones are known, which vary according to the diphenoxy linkers. Radel&Duradex PPSU, derived from 4,4'-biphenol and 4,4´-dichlorodiphenyl sulfone through salt formation and polycondensation. Victrex, derived from , see bisphenol S
Compared with PSU, the molecular chain of PPSU does not contain isopropylidene but contains a large amount of biphenyl. Therefore, PPSU has higher heat resistance. However, the ether bond in the molecular chain can still provide a certain degree of flexibility, making it available to be used at a low temperature of -240°C. What’s more, the rigidity of the PPSU molecular chain is much higher than that of the PSU. As a result, with higher melt viscosity is higher and worse melt fluidity it is more difficult to process PPSU.
The primary monomers used to manufacture PPSU are: Monomer CAS Number Molecular formula Function 4,4'-Dichlorodiphenyl sulfone 80-07-9 C₁₂H₈Cl₂O₂S Sulfone-containing dihalide monomer 4,4'-Biphenol 92-88-6 C₁₂H₁₀O₂ Aromatic diphenol monomer
Applications PPSFs are moldable plastic often used in rapid prototyping and rapid manufacturing (direct digital manufacturing) applications. Polyphenylsulfones are heat and chemical-resistant suited for automotive, aerospace, feeding bottle and plumbing applications, Polyphenylsulfone has no melting point, reflecting its amorphous nature,PPSF for FORTUS 3D Production Systems and offers tensile strength up to 55 MPa (8000 psi). Its commercial name is Radel.Product Detail: Radel® In plumbing applications, polyphenylsulfone fittings have been found to sometimes form cracks prematurely or to experience failure when improperly installed using non-manufacturer approved installation methods or systems.Failure Analysis of Plastic Crimp Fitting Assemblies
References