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Polyphenylene sulfide
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Proceedings Papers
ITSC 2001, Thermal Spray 2001: Proceedings from the International Thermal Spray Conference, 337-342, May 28–30, 2001,
Abstract
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Polyetherether-ketone (PEEK) and Polyphenylene-sulfide (PPS) are high performance thermoplastics having high heat resistance and high corrosion resistance. Composite powders of PEEK / Alumina (Al 2 O 3 ) with different Al 2 O 3 content have been produced by four processes, which are Mixing (MX) process. Mechanical granulation (MG) process. Melting-crush (MC) process and Heating-granulation (HG) process. PEEK / Al 2 O 3 composite powders have been sprayed with High Velocity Air Fuel (HVAF) spray system. The microstructures of these composite coatings have been evaluated and the properties of these composite coatings have been investigated by the corrosion test, the adhesion test, the ACT-JP test and the abrasive wear test. It was recognized that all the composite coatings containing Al 2 O 3 powder have a good wear resistance. PPS / Al 2 O 3 composite powders have been sprayed with HVAF spray system onto substrate of various pre-heat temperature. It was recognized that the adhesion strength of the composite coatings increases with increasing pre-heat temperature of substrate.
Proceedings Papers
ITSC1999, Thermal Spray 1999: Proceedings from the United Thermal Spray Conference, 582-587, March 17–19, 1999,
Abstract
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Thermally sprayed coatings made of polyetheretherketone (PEEK) and polyphenylene sulfide (PPS) are becoming increasingly interesting, especially for corrosion protection applications at elevated temperatures in the chemical industry. In contrast to conventional polymers these materials melt at much higher temperatures. Furthermore, PPS and PEEK show enhanced mechanical and chemical stability. Instead of HVOF and plasma spraying, in this paper much simpler and low-cost flame spraying is used because of these advantages. The polymers are investigated along the entire deposition process in order to exclude possible decomposition. Attempts are made with various adhesive layers to reduce the unacceptably high preheat temperatures. The corrosion protection features are examined by means of corrosion tests with various media. The results of the experiments presented in this paper promise coatings of high performance thermoplasts a great future as anticorrosive coatings. Paper includes a German-language abstract.