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VCI powder,SF/D-331 is watersoluble, spayable volatile corrosion inhibiting powder designed for the corrosion protection of self-seal system (e.g. tubular structure and pipes) and metals in the enclosed space. SF/D-331 provides excellent volatility, migratory and absorbable performances, and forms a molecular protective layer on the metal surface, which can effectively protect metal against corrosion.
Features
l Excellent vapor-phase, liquid and interface protection
l Provides over 12 months of continuous protection
l Completely water soluble, as an additive to water presser testing
l Offers superior corrosion protection to all shapes of structure
l Easily removes with air presser or water
l
Physical and chemical properties
Appearance: white crystalline powder
PH: 6.5-7.5 (1% aqueous solution)
Solubility: 1g/2ml water(+25oC)
Typical application
l Internal surface of tubular structure, pipe and vessel, etc
l Internal surface of compressors, turbines, engines, tanks, boilers, heat exchanges
l Steam cooling pipe, close cycle heating and cooling system
l Internal surface of tested structure during and after water presser
l Machineries and spare parts during transportation and storage
l Cavities, aperture, holes, casting body
Method of application
apply SF/-331 in dry form by spraying easily achieved to pipe or vessel, closed after application. by using air pressure, air hose or sandblast, large conventional sandblasting system or hand blast can also be used. For powder application, with average environmental condition, use 100g/m2, the dosage can be increased for more severe condition.
In wet form, apply water presser testing soluble and then remove water solution and close vessel after application. Also can dilute solution to spraying, printing and dipping, and then seal packing. at the ambient temperature water solution ratio 1:0.5%, the dosage can be increased for more severe condition. To increase the metal surface wetness, to apply SF/TD-101 1.0% is recommended,
the dosage is 1.0% weight of SF/D-331 powder.
Metal protected.
Carbon steel, steel alloy, stainless steel, aluminum and its alloy.
Clearness
To move powder residues easily by air presser and water,
To move liquid form, no cleaning required, if necessary, simply rinsing or spraying with water.
Package and storage.
Package: 3kg/drum, 20kg/drum
Storage: keeping indoor or shelter dry place, away from sun shine below 65 degree temperature For 12 months.
Note: effective to copper and its alloy, galvanized steel, tinned plate, printed plate, can also for metal contained with iron, aluminum and its alloy, it is not effective to non-ferrous and coated metal unless it pass testing
VCI powder for ferrous metals, VCI powder for steel and iron products