Ryton properties

Properties. As prepared, the polymer is not soluble in any known solvents below 200°C and has limited solubiUty in selected aromatics, halogenated aromatics, and heterocycHc Hquids above this temperature. The properties of Ryton staple fibers are in the range of most textile fibers and not in the range of the high tenacity or high modulus fibers such as the aramids. The density of the fiber is 1.37 g/cm which is about the same as polyester. However, its melting temperature of 285°C is intermediate between most common melt spun fibers (230—260°C) and Vectran thermotropic fiber (330°C). PPS fibers have a 7 of 83°C and a crystallinity of about 60%. 

Electrical property Ryton PPS R-4XT, 40% glass-fiUed Ryton PPS R-7, glas s—rnineral-filled... 

RYTON Polypheny lenesulfide Physical, Chemical, Thermal, and Electrical Properties, TSM-266, Phillips Chemical Co., BaiflesviUe, OHa., Api. 1981, p. 2. 

Unlike the corresponding PPO, PPS is resistant to organic solvents. PPS is sold under the trade name of Ryton. Its general properties are shown in Table 15.10. 

Polyphenylene sulphide (PPS) (e.g. Ryton ) is a highly crystalline polymer with a melting point of 290 °C. It combines good mechanical properties with very high thermal and chemical resistance it is, moreover, self-extinguishing. It is, i.a., used as protective coating on metal surfaces. 

Ryton PPS coatings that are pinhole free at 2-4 mils may be obtained easily by slurry-coating procedures. Properties of these coatings are indicated in Table VI. These coatings are quite hard, with a pencil... 

Ryton Polyphenylene Sulfide is a new commercial plastic which is characterized by good thermal stability, retention of mechanical properties at elevated temperatures, excellent chemical resistance, a high level of mechanical properties, and an affinity for a variety of fillers. It is produced from sodium sulfide and dichlorobenzene. Its unusual combination of properties suggests applications in a variety of molded parts such as non-lubricated bearings, seals, pistons, impellers, pump vanes, and electronic components. Tough coatings of polyphenylene sulfide can be applied to metals or ceramics by a variety of techniques and are used as protective, corrosion-resistant coatings in the chemical and petroleum industries. Incorporation of small amounts of polytetrafluoroethylene provides excellent non-stick properties in both cookware and industrial applications. 

PPS has a s)mimetrical, rigid backbone chain consisting of recurring para-substituted benzene rings and sulfur atoms. It is sold under the tradename of Ryton. Long-term exposure in air at 450°F (230°C) has no effect on the mechanical properties of PPS. 

Ryton PPS mechanical properties. Chevron Phillips Chemical Company 2001. 

Ryton Polyphenylene Sulfide Compounds Engineering Properties ,... 

Between 1967 and 1973, workers at Phillips refined the new polymerization process, defined physical properties, constructed and operated a pilot plant, established market demand for such a material and designed and constructed a full-scale commercial plant. In late 1972 the world s first polyphenylene sulfide plant came on stream in the Phillips Petroleum Company facility in Borger, Texas. The original plant had a nameplate capacity of 5 MM pounds per year. Subsequently, it has been enlarged and debottlenecked to its present capacity of 12 MM pounds per year. This material is sold under the tradename Ryton Polyphenylene Sulfide. 

PPS is primarily used for surface mounted connectors and optical pick-up units but it is also replacing conventional materials in such applications as housings for mobile phones and other mobile information devices. New product grades include Ryton R-4-260 PPS from Chevron Phillips Chemical Co., which is a glass-filled PPS for electronics applications. Its properties include low flashing and low outgassing tendencies. 

Technical Information on Ryton, 44. Polyphenylene Sulfide Resins 100—Properties, Processing, Phillips Petroleum Company, Bartlesville, OK, Undated. 

Property Polysul- phone Udel Poly ether sulphone Victrex Poly- phenylene sulphide Ryton Polyether- imide Ultem Ultem +20% glass reinforced... 

The Ryton polyphenylene sulphide compounds are formulated for the encapsulation of semiconductors and discrete components and are particularly suited to this application because of their excellent thermal stability, resistance to chemical environments, flame retardancy and good electrical properties over a wide temperature range. In order to be suitable for the encapsulation of microcircuits and transistors the material must have good flow during moulding, good dimensional stability, low levels of impurities and low moisture absorption characteristics. 

RYTON polyphenylene sulfide resins and compounds are engineering thermoplastics developed by Phillips Petroleum Company. Available in both molding and coating grades, these materials feature excellent dimensional stability, inherent flame retardancy, thermal stability, chemical resistance, desirable electrical properties and ease of processing. 

---