Polyphenylene sulfide thermal stability

This crystalline aromatic nylon, combines the high strength and stiffness of nylon with the thermal stability of polyphenylene sulfide. Molding characteristics are similar to nylon 6/6, with similar or better chemical resistance, but its 24 h water absorption is only 0.2 versus 0.7% for nylon 6/6. A key behavior is high heat resistance. 

Table VII. Thermal Stability of Polyphenylene Sulfide Coatingsft...

PTFE can be compounded with polymeric fdlers with adequate thermal stability. Examples of such polymers include polyarylates such as polyether-ketone, polyphenylene sulfone, and polyphenylene sulfide. Surface characteristics such as wear rate, coefficient of friction, and surface tension can be modified with these additives. 

Polyphenylene Sulfide Sulfone - Thermoplastic with good thermal stability, chemical resistance, and dielectric properties, and low flammability and creep. Processed by injection molding. Used in electrical components. Also called polyphenylene sulfide sulfone. 

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. 

Polyphenylene-sulfide, PPS thermal and environmental stability, fire extinguishing machinery and electronics, high temperature coatings... 

For polyphenylene sulfides the presence of an ether linkage enhances the thermal stability in some cases, but in others it decreases the thermal stability. If there is no ether or isopropylidene linkages, the order of stability is biphenyl > phenyl. 

The tiiermal properties of the para-, meta-, and ort/jo-substituted polyphenylene sulfides (8a-c, 9a-c) were examined using thermogravimetric analysis. Although all of these polymers exhibited good thermal stability, TGA results indicated that the thermal stabfiity of tiiese polymers decreased in the order p-> m-> o-. For example, the onsets for weight loss in polymers 9a-c were 512,491, and 448°C, respectively. 

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. 

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