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Ryton®
or Fortron® - PPS - Polyphenylene sulfide
PPS,
polyphenylene sulfide (Ryton® by Chevron Phillips
Chemical Company, Fortron® by Ticona) is the oldest material
in the high performance, injection-moldable category.
Non-filled
grades are used exclusively as coatings. With
the addition of glass and carbon fibers, minerals, and PTFE
fillers, PPS becomes a very suitable molding material. Initially,
PPS was promoted as a replacement for thermosetting materials.
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While
no known solvents attack PPS,
strong reducing agents will attack the material, and high
temperature water will act as a solvent on the binder which
bonds glass-fiber to the polymer (some grades).
PPS
is generally used in applications where high temperature and chemical resistance
are required.
A continuous use temperature of 428 degrees F and short term
properties at 500 degrees F allow PPS to be used in automotive,
electronic (solderability), and may OEM applications.
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