The difference between water - and oil

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Service > The difference between water - and oil - removing agents

The difference between water - and oil - removing agents

The water - dissipation agent is the water - soluble after emulsifying agent and other fillers. The oil - removing agent is not emulsified. It is made of mineral oil or polyether
Foam disposal is a difficult problem in the process of 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, silicone three general purpose, high efficiency, good coordination, and market potential of broad-spectrum type of foam agent. As a new type of additives, silicone has been paid more attention in the paper industry..
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. The organic compounds that can be used as the elimination agent are more organic compounds, such as silicone oil, polyether, alcohol, fatty acid, phosphate and metal soap etc.. 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.
The silicone oil - removing agent is divided into four major categories according to physical properties, i.e., silicone oil, silicone oil solution, silicone oil mixture and silicone oil emulsion type. The silicone oil used in the paper industry can be silicone oil type, and it can also be silicone oil emulsion type, and it is mainly based on silicone oil emulsion type.. 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 can achieve very strong breaking bubble and bubble inhibition, so become an important ingredient of the bubble agent. Silicone oil type of the bubble agent generally has a high efficiency of the bubble, the key lies in the use of silicone oil emulsification. If the emulsion is not complete, the use will affect the use effect of demulsification. The common silicone removing agent is based on silicone oil as the basic component, with suitable solvent, emulsifier or inorganic filler..a

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