• Guangdong Petrochemical Branch Lubricant Defoamer Solution

    By : Zilibon defoamer
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    Customer type

    1. Customer information: A Guangdong Petrochemical subsidiary company, Zilibon Chemical Manufacturer defoamer, uses terminal, generates bubbles during high-speed stirring, bubbles during canning, and defoamer provided by the original defoamer supplier. The time is not long enough and has a slight effect on transparency. Therefore, it is necessary to help the defoamer manufacturers in the federation.

    2. Sample information: No. 3 oil

    Lubricant sample information


    Colorless transparent liquid



    Water soluble

    Insoluble in water





    Defoamer applied to lubricants

    3. Customer requirements: need for rapid defoaming, after adding antifoam agent for a long time without foam regeneration, defoamer compatibility is better, can not affect the transparency.

    Defoaming principle and analysis

    1. Foaming causes and hazard analysis:
      Lubricating oil is an oily liquid that is lubricated to cool the mechanical friction area.With the development of industry, the demand for lubricating oil is getting higher and higher, and many active surface additives have been added.When the lubricating oil is used in the case of internal combustion, it is to be sprayed into a mist, and it cannot be avoided that a large amount of air will be mixed in. The surfactant will entrap the gas and form a stable foam.The lubricating oil foaming increases the gas-liquid contact, promotes oxidation, generates a flotation effect, causes the components to mix unevenly, thereby deteriorating the lubricating oil and deteriorating. Affecting the normal operation of the unit, the fuel tank or oil sump is filled with foam and overflows, causing the lubricant surface to drop, damaging the lubricated components and disrupting the uniform supply, affecting the smooth operation.Of course, when the cooling function is needed, it will reduce the cooling function of the lubricant.

    2. Lubricant defoaming experimental process analysis:
      Foam is an insoluble gas into the liquid in the external force, and isolation liquid heterogeneous system, i.e. the gas dispersing one liquid in the body system. The generation of foam is directly related to the surface tension of the liquid.The developed lubricating oil was formulated into a series of aqueous solutions with different concentrations, and the surface tension of the aqueous solutions with different concentrations was determined.
      Through a series of experiments, it can be seen that the addition of lubricating oil can significantly reduce the surface tension of water.When the concentration reaches I. 50h, the surface tension is minimized.That is CM (the two values are I.5%).From the characteristics of the curve, it can be seen that the lubricating oil is similar to a table and the active agent. When the lubricating oil concentration reaches 61(two a large amount of active substances are accumulated on the surface of the aqueous solution to form a monomolecular film and the tension of the system table is reached. The smallest.The surface active material has a parent structure, one end is hydrophilic, one end is lipophilic, and it is easy to form a foam.The actual use of lubricating oil, preparation of a concentration greater than CM (two, there is a sufficient number of active materials in the solution, when used in the metal processing ring, contact with a lot of air, will form bubbles, surface active substances in the gas-liquid interface orientation The adsorptive film is arranged so that the foam is stably present.As the lubrication process progresses, some of the solid particles are also easily adsorbed on the surface of the foam to form a three-phase foam, making the foam more stable.Therefore, the main reason for the lubricating oil to form a foam is that the active material is positively adsorbed at the gas-liquid interface to form a stable absorption film.This article omits data and experimental procedures, if you want detailed information contact Zilibon Chemical Manufacturer.

    3. Lubricant defoamer solution analysis
      According to the experimental lubricating oil foaming causes and experimental results, the lubricating oil defoamer should be used. The lower the viscosity of the lubricating oil, the lower the relative viscosity of the suitable defoamer and the higher the solubilization.on the contrary.
      Therefore, it is concluded that the E-334, E-334B and other low-viscosity oils have the most significant effects.
      Because the lubricating oil is similar to transmission oil, hydraulic oil, metal cutting fluid, drawing oil, emulsified oil, cooling oil, and grinding oil, the results of this experiment are applicable.

    Defoaming test comparison

    Sample serial number


    Experimental results



    Transparency, defoaming, long foam suppression



    Transparency, defoaming, long foam suppression



    Transparency, defoaming, long foam suppression

    A , B , transparency, defoaming, foam suppression, customer samples.The cost of the C number is too high, send samples to the customer, do not recommend buying and using.

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