The role of degreasing agent:
The main function of degreasing agent is to remove oil stains, oxidized and unoxidized surface impurities on the metal surface through the active surface, and to maintain the cleanliness, luster and color fastness of the outside of the object. In the process of grinding and finishing with objects, at the same time, the abrasive itself reacts chemically, participates in roller grinding, maintains the friction between objects and materials, and improves the surface luster and brightness of objects or parts.
Generally speaking, degreasers can be used to remove dirt and have no adverse effects on metal surfaces. For example, products containing caustic soda can remove oil from die castings, castings or brass parts, and such products will react with these surfaces. Cleaning degreaser is composed of chemicals with multiple functions such as chelating, cleaning, degreasing, dispersion and penetration. It has unique degreasing, derusting and cleaning effects. It is a good degreasing cleaning agent, which can effectively remove dirt on equipment, emulsified oil in water and oil film attached to the surface of pipeline equipment, without secondary pollution.
Therefore, it is very important to choose a suitable degreasing agent for the metal matrix to be degreased. Most of the patented degreasing agents used in industry belong to alkali. The corresponding application of degreasing agents on different fabrics: the reasons for the formation of oil agents are different. In dyeing and finishing production, it is necessary to remove different oils from different fabrics to avoid staining and spot marks caused by oil stains or oil stains.
How to distinguish the function of degreasing agent;
The amount of foam produced by degreasing agent can usually be used to measure its degreasing ability. In the process of dyeing and finishing, foam often leads to cloth blocking in operation, resulting in dyeing and oil pollution, so the amount of foam should be considered comprehensively. Low foam cleaning agents are used more and more in modern industrial and civil washing. There are two ways for cleaning agent to meet the requirement of low foam: one is to add defoamer to cleaning agent; The second is to use low-foaming surfactants, such as polyether surfactants. However, detergents containing defoamers,
Its defoaming ability often decreases with the extension of time, and the adverse side effects are great after adding defoamer, which is easy to produce material spots. Through a large number of experiments, it is found that a degreasing agent with low foam, fast foam breaking and good washing effect can be prepared by compounding soap base, alkylbenzene sulfonate and leveling agent in a proper proportion. In electroplating industry, the base metal surface must be degreased before electroplating. If the degreasing agent used produces too much foam, it will affect the production process.