Accession Number : ADA305330

Title :   Evaluation of Polyphenylene Sulfide. Revision.

Descriptive Note : Topical rept.,

Corporate Author : BENDIX CORP KANSAS CITY MO KANSAS CITY DIV

Personal Author(s) : Walter, C. L. ; Melton, R. J. ; Roebuck, C. E. ; Smith, R. M.

PDF Url : ADA305330

Report Date : MAY 1975

Pagination or Media Count : 19

Abstract : Phillips Petroleum Company's R-4 polyphenylene sulfide (PPS) was evaluated. The chemical structure was verified, the polymer was characterized, and the physical characteristics were determined. A chemical evaluation determined the glass transition temperature to be 118 deg C and that decomposition begins at about 375 deg C. A sixteen-line molding matrix was used to produce test specimens for a statistical analysis of the physical characteristics of the molding resin. Three molding variables--injection pressure, mold temperature, and melt temperature--each had five levels of variance while the mold fill time had three levels. All other molding conditions were held constant. Polyphenylene sulfide can be molded successfully under a wide range of conditions. It has low shrink along with low differential shrink and warp characteristics, as well as a 260 deg C heat distortion temperature. The results of this study indicate that PPS is a very strong, stable material having a high temperature resistance. It is solvent resistant and can be used where aromatic and chlorinated solvents are used. A drawback that would possibly influence its selection would be the opaque dark brown color, which also, precludes it from being readily pigmented. jg p3

Descriptors :   *SULFIDES, *POLYPHENYLENES, TEST AND EVALUATION, INJECTION, TEMPERATURE, STABILITY, CHEMICAL PROPERTIES, CHEMICALS, PHYSICAL PROPERTIES, MATERIALS, POLYMERS, HIGH TEMPERATURE, MELTS, GLASS, TRANSITION TEMPERATURE, PRESSURE, MOLECULAR STRUCTURE, AROMATIC COMPOUNDS, STATISTICAL ANALYSIS, ORGANIC SOLVENTS, MOLDINGS, CHLORINATION, DECOMPOSITION, PLASTICS, PETROLEUM PRODUCTS, THERMAL RESISTANCE.

Subject Categories : Polymer Chemistry
      Organic Chemistry
      Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE