Chemical Immersion Paint Stripping

摘要

The two most common methods of chemical paint stripping are hot and cold stripping (see Table I). Hot strippers are normally associated with the use of hot alkali and the stripping of organic coatings from steel, copper, and magnesium; however, this is not the only application of hot strippers.rnThere are many hot strippers that are not highly alkaline but are or relatively neutral pH, which form an emulsion when brought in contact with water or are solubilized and form a clear solution. These hot strippers can strip coatings from aluminum, zinc, and brass without etching or darkening the base metals. The hot alkaline paint strippers are formulated with sodium hydroxide as the primary element acting together with chelating agents, surface activating agents, and any other solvents that can be added to the mixture to enhance the ability to strip without causing the compounds to cake.