Appearance: white microfine powder
Water content: ≤ 0.05
Average particle size D50 (μm): ≤ 1
Melting point (°C): 327±5
Apparent density (g/l): ≤ 700
Corrosion resistance: no change
Molecular weight: 10000-30000
Flame spraying is one of the important coating methods of polyphenylene sulfide. In flame spraying, a small number of times should be adopted until the required thickness is reached. Generally, the thickness should be controlled at 0.25~0.4mm. Due to the flame spraying process Among them, the stress difference of the bonding part caused by the temperature difference between the first and post-coating parts of large workpieces and the impact on the coating performance are the problems that flame spraying needs to solve at present. The influence of flame spraying process on the performance of polymethyl sulfide coating is shown in Table 3-20. Polyphenylene sulfide resins for coatings are constantly being developed. American Ticona company introduced three new Fortron PPS grades from 2000 to 2001. Among them, For ron0205CFA has an average wax particle size of 15 pm, and the particle volume is 50% smaller than existing resins, which can save a lot of money. Blending and removal time, this product has been used on bearings and hair-curing appliances. For tron0205SPPPS has an average particle size of 10gm, which is mainly used for advanced evaporators and chemical equipment; For tron0317C 1 is used for temperature up to 190℃ The high-temperature filter, in addition, the PC series powder coating polystyrene sulfide developed by Dainippon Oil Chemical Co., Ltd., can become a pinhole-free flat coating film after one coating and sintering.
The polyphenylene sulfide coating can withstand various acids, Corrosion of alkali, salt and other chemical media has strong resistance to strong alkali, phosphoric acid, hydrofluoric acid, formic acid, acetic acid and other organic acids. It is also very resistant to corrosion even at higher temperatures (100°C). The corrosion resistance is better than that of enamel and metal titanium, so it has a wide range of applications.
The corrosion resistance and heat resistance of the polyphenylene sulfide coating can be beautifully matched with the fluororesin, and it is in the adhesion to the substrate. , Hardness, non-toxicity and operational safety are better than fluororesin. Because the polyphenylene sulfide coating has excellent chemical resistance, electrical insulation, abrasion resistance and physical and mechanical properties, and has good adhesion to the surface of carbon pot, cast iron, aluminum, ceramics and glass, and The enamel glaze coating has similar and complementary functions and can be used as a protective coating for anti-corrosion equipment. Polyphenylene sulfide powder coatings are used in the production of anti-corrosion equipment. For example, carbon steel tower equipment is the outer shell and the polyphenylene sulfide coating is the inner Layer, made of polyphenylene sulfide/carbon steel and corrosion composite tower to give full play to the advantages of both. This equipment is far superior to stainless steel/glass-lined towers, and has the advantages of long life, simple construction, lower price, and no impact on product quality.
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