The difference between the oil and the water

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News > Dynamic industry > The difference between the oil and the water - soluble bubble

The difference between the oil and the water - soluble bubble

The water - water - removing agent is a water - soluble, and the oil - water - removing agent is a water - soluble, and it is made of mineral oil or polyether.
Foam processing is a difficult problem in the process of making paper and foam in the pulp and paper industry. From steamed ball until the coating process of the material after pulping unit operation, have different degrees of bubble exists, seriously affects the normal production and the quality of the paper, but conventional mineral oil and sulfonated vegetable oils, alcohols, such as fire foaming agent species poor surface activity, defoaming efficiency low, applicable scope is narrow, can not meet the users' requirements. At present, domestic and foreign paper mainly uses fatty acid amide, polyether, organic silicon three kinds of general purpose, high efficiency, good coordination, market potential of a broad spectrum of anti foam agent. As a new type of auxiliary agent in papermaking industry, organic silicon has been paid more attention.
On the defoaming agent action mechanism, generally considered is the low surface tension of defoaming agent into the local double molecular orientation of the bubble film, destroy the balance of mechanical orientation of the bubble film, and lead to a broken bubble or suppress foaming. It is suitable to be used as the organic compound of the anti foaming agent, and has the oil, polyether, alcohol, fatty acid, phosphate and metal soap. From the point of view of the structure and non silicon series fire foam agent is one or both ends of the molecules with polar groups of organic compounds or polymers, they and foaming agent is similar, and improper use will the foaming agent, the spreading coefficient larger, bubble breaking effect is very strong and anti bubble effect is poor.
Silicone oil - removing agent is divided into four major categories according to physical properties, i.e., silicone oil, silicone oil, silicone oil, silicone oil and silicone oil emulsion. In the paper industry, the application of silicone oil in the silicone oil emulsion can be used for the type of silicone oil emulsion, and is mainly based on silicone oil emulsion. Will after silicone oil emulsification, surface tension decreases rapidly so it is easy to adsorbed on the surface of the foam liquid, spread on the surface of the liquid, the formation of surface viscosity of the mask is small, the intensity is low, so can cause bubble on the local surface tension imbalance, so that the liquid film thinning and rupture, so as to achieve the purpose of defoaming, and has antifoaming effect; in addition, emulsion type fire agent for water greater affinity, adaptive pH value a wide range of bubble, no adverse effects on the sizing, not on paper lead to stains. And the use of a very small amount that is able to reach a very strong bubble and anti - bubble, so as to become an important ingredient in the bubble. Silicone oil - type anti - foaming agent generally has a high efficiency, the key is to use the emulsion of silicone oil. If the emulsion is not complete, the use will affect the use effect of demulsification. Silicone oil is used as the basic component of silicone oil, with suitable solvent, emulsifier or inorganic filler to prepare.

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