Polyphenylsulfone
{{Short description|Class of polymers}}
Polyphenylsulfone (PPSF or PPSU) is a high performance polymer made of aromatic rings linked by sulfone (SO2) groups.El-Hibri, M. Jamal; Weinberg, Shari A.
"Polysulfones" Edited by Mark, Herman F. Encyclopedia of Polymer Science and Technology (4th Edition) 2014, volume 11, pp. 179-204. {{ISBN|978-1-118-63389-2}}
Production
Commercially important polysulfones are prepared by condensation of 4,4'-bis(chlorophenyl)sulfone with various bisphenols. Two bisphenols for this application are bisphenol A (the polymer being called PSF) and 4,4'-bis(4-hydroxyphenyl)sulfone (the polymer being called PES). How does one know if this is true?
Applications
PPSF is a moldable plastic often used in rapid prototyping and rapid manufacturing (direct digital manufacturing) applications. Polyphenylsulfone is heat and chemical-resistant suited for automotive, aerospace, and plumbing applications. Polyphenylsulfone has no melting point, reflecting its amorphous nature,[http://www.simt.com/rpc/pdf/MS-PPSF-FORTUS-0209.pdf PPSF for FORTUS 3D Production Systems] {{webarchive|url=https://web.archive.org/web/20110930220755/http://www.simt.com/rpc/pdf/MS-PPSF-FORTUS-0209.pdf |date=2011-09-30 }} and offers tensile strength up to 55 MPa (8000 psi). Its commercial name is Radel.[http://medicalgradeplastics.com/radel.htm 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.[https://web.archive.org/web/20140724002226/http://www.plasticsengineering.org/system/files/peng-11-2010-0362.pdf Failure Analysis of Plastic Crimp Fitting Assemblies]