Polyphenylene sulfide

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Polyphenylene sulfide
Space-filling model of a short section of a polyphenylene sulfide chain from the crystal structure[1]

Polyphenylene sulfide (PPS) is an organic

oxidation or use of dopants.[2]

Polyphenylene sulfide is an engineering plastic, commonly used today as a high-performance thermoplastic.[3] PPS can be molded, extruded, or machined to tight tolerances. In its pure solid form, it may be opaque white to light tan in color. Maximum service temperature is 218 °C (424 °F). PPS has not been found to dissolve in any solvent at temperatures below approximately 200 °C (392 °F).[citation needed]

An easy way to identify the compound is by the metallic sound it makes when struck.

Manufacturers and trade names

PPS is marketed by different brand names by different manufacturers. The major industry players are

Kureha, HDC Polyall, Celanese, DIC Corporation, Toray Industries, Zhejiang NHU Special Materials, SABIC, and Tosoh.[4] Other manufacturers include Chengdu Letian Plastics, Lion Idemitsu Composites, and Initz (a joint venture of SK Chemicals and Teijin).[5]

The following are examples of brand names by manufacturer and PPS type:

Characteristics

PPS is one of the most important high temperature thermoplastic polymers because it exhibits a number of desirable properties. These properties include resistance to heat,

aging, sunlight, and abrasion. It absorbs only small amounts of solvents and resists dyeing
.

Production

The

aromatic rings." The generic name for this synthetic fiber is Sulfar.[6]

The PPS (polyphenylene sulfide)

1,4-dichlorobenzene
:

n ClC6H4Cl + n Na2S → [C6H4S]n + 2n NaCl
Hill and Edmonds, developers of PPS

The process for commercially producing PPS (Ryton) was initially developed by Dr. H. Wayne Hill Jr. and James T. Edmonds at

Phillips Petroleum.[7] N-Methyl-2-pyrrolidone (NMP) is used as the reaction solvent because it is stable at the high temperatures required for the synthesis and it dissolves both the sulfiding agent and the oligomeric
intermediates.

Linear, high-molecular-weight PPS that is capable of being extruded into film and melt spun into fiber was invented by Robert W. Campbell.[8]

The first U.S. commercial sulfur fiber was produced in 1983 by Phillips Fibers Corporation, a subsidiary of Phillips 66.[2]

References

  1. doi:10.1016/0014-3057(71)90145-5
    .
  2. ^
    doi:10.1002/14356007.a21_449
  3. ^ "Chevron Phillips Technical Library". Archived from the original on 2009-07-04. Retrieved 2009-07-22.
  4. ^ "Polyphenylene Sulfide (PPS) Market Analysis by Application (Automotive, Electronics & Electrical, Industrial, Coatings) and Segment Forecasts to 2022". {{cite web}}: Missing or empty |url= (help)
  5. ^ "Global Polyphenylene Sulfide (PPS) Market 2012-2022 - Research and Markets". Research and Markets. April 19, 2016.
  6. ^ "eCFR :: 16 CFR 303.7 -- Generic names and definitions for manufactured fibers". Archived from the original on 2023-06-24.
  7. ^ H Wayne Hill Jr., James T. Edmonds, to the Phillips Petroleum Company Research Center (Bartlesville, Oklahoma, US). Patent 3,354,129, 1963. issued November 21, 1967
  8. ^ Robert W. Campbell to the Phillips Petroleum Company Research Center (Bartlesville, Oklahoma, US). Patent 3,919,177, 1974 issued November 11, 1975
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