The two most commonly used methods for cleaning facades in Chengdu cleaning classes: physical and chemical methods. It is usually better to combine these two methods.
Physical method: mainly remove the dirt from the exterior wall of the building by external force. The specific method is to rinse (or spray) with water to make the dirt soft, peel, and melt, and then rinse it with water. This method is mainly used to remove ash, floating dust, silt, soil slag, etc. on external wall materials such as glazed tiles, hydrostone, mosaics, etc., but its consumption of water is very large, coupled with high-pressure spraying and easy to damage the exterior Wall, and it is powerless for some blood stains and heavy dirt on the exterior wall, so it is not practical to use this method alone.
Chemical cleaning method: The chemical cleaning method is to use chemical reagents to dissolve, separate, and degrade the dirt and other chemical reactions, so that the external wall can achieve the purpose of descaling, rusting, decontamination, and degreasing. The general composition of exterior wall cleaning agents is three types, namely neutral cleaning agents, alkaline cleaning agents and acid cleaning agents, but mainly neutral cleaning agents. The main components of neutral cleaning agents are surfactants, builders and Auxiliaries, in fact, they are not absolutely neutral, but they are slightly alkaline or slightly acidic, but they are generally called neutral cleaning agents. They are characterized by wetting, emulsifying, dispersing and solubilizing. Features.
At present, most domestic and foreign wall cleaning units use alkaline and acid cleaning agents, and hydrochloric acid and hydrofluoric acid are used more frequently. As reported in the "Everyone's Digest", 10,000 tons of inferior cleaning solutions (referring to hydrochloric acid) are used in Shanghai every year. , Hydrofluoric acid) is currently quietly eroding the beautiful appearance of Shanghai's high-rise buildings, and is floating on the streets of Shanghai, but also flows into the Shanghai drainage system, becoming a public nuisance to the city.
Therefore, highly corrosive acid cleaning agents such as hydrochloric acid and hydrofluoric acid are like a double-edged sword, which can not only remove dirt, but also damage the substrate, making its strength and surface finish poor, and hydrogen Fluoric acid is also very toxic to the human body ... Therefore, according to the current status of cleaning at home and abroad, special attention needs to be paid to the selection of suitable external wall cleaning agents.
In addition, before cleaning, the surface of the external wall should also be washed or sprayed with water to reduce the amount of cleaning solvent and increase the effect of using the solvent.
The main feature of the chemical cleaning method is that it is suitable for the cleaning of various external wall dirt, and it is fast and effective. Generally, as long as the cleaning agent is selected properly, it must be cleaned very cleanly. However, chemical agents have certain corrosiveness and they have certain impacts on environmental protection. Therefore, construction units and operators should also choose appropriate cleaning agents and green environmental protection agents.
"Customer first, service first" is the purpose of Chengdu Procter & Gamble; "give you more clean and less tired" is our principle; "maintain the interests and image of customers" is our unswerving goal. We continuously train our staff, continuously improve the quality of management, and always pursue standardized and high-quality cleaning services.