1, surface active agent
One of the most commonly used method of cleaning terrazzo, marble and other stone floor surface fouling, surfactant with ionic and nonionic two. Their molecules containing polar and non polar two genes, cleaning principle is the use of reduced surfactant surface tension, wetting, adsorption, emulsification, solubilization, dispersion and other properties of the molecular dirt shedding, dispersion, so as to achieve the cleaning effect.
2, alkali cleaning
It is mainly used to remove the oil pollution by using the alkaline chemical agent, such as saponification and emulsification, loose and dispersed dirt, common alkali solution as sodium hydroxide, sodium carbonate and so on. Two kinds of oil saponification and non saponification. Oil pollution can be a kind of animal and vegetable oil pollution, the formation of soap can dissolve in the water, so it is easy to remove. Non greasy oil pollution of the oil system, cleaning the oil with the help of emulsifier, to reduce the adhesion of oil and adhesion and fall off, the common emulsifier has three phosphate, sodium silicate, etc..
3, acid cleaning
It is widely used in stone cleaning, especially granite. Hydrochloric acid, sulfuric acid, nitric acid, hydrofluoric acid with inorganic acid; organic acid with citric acid, oxalic acid, amino acid etc.. As with sulfuric acid to remove rust, sulfuric acid and ferric oxide generated after reaction with ferric sulfate, which can dissolve in water, so the rust can be removed. The corrosion problem of inorganic acid cleaning is worth attention but, especially for marble and other carbonate stone, acid or acid residues in the micro pores in possible long-term harm stone, even if the buffer is difficult to avoid the erosion problems, so foreign tend to use less corrosive, easy purification of organic acids or other organic cleaning.