The Influence of the Foaming Agents Nature on Physical and Technical Properties of Foam

Попов, Александр; Нелюбова, В В; NELYUBOVA, V.V.; Netsvet, Daria Dmitrievna; Necvet, Dar'ya

doi:10.12737/article_5abfc9b7ce94e3.70688983

Bulletin of Belgorod State Technological University Named After. V. G. Shukhov

2018

DOI: 10.12737/article_5abfc9b7ce94e3.70688983

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The Influence of the Foaming Agents Nature on Physical and Technical Properties of Foam

Александр Попов¹,

В В Нелюбова²,

V.V. NELYUBOVA

et al.

Abstract: The paper considers the influence of the nature of foaming agent on the properties of foams. Based on the analysis of the market of modern pore-forming additives, from the number of foaming agents the most widely used components, as well as novelties of the market, have been chosen. The technical characteristics of the foaming agents provided on the market are reviewed. The influence of foaming agent concentration, composition and base on the foam expansion, stability and density of foams is studied in the pap… Show more

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Cited by 2 publications

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Dependence of the volume stability on the expansion rate of low-expansion foam

Kamluk,

Likhomanov,

Govor

2024

Vescì Akademìì navuk Belarusì. Seryâ fizika-tehničnyh navuk

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In this work, we analyzed and summarized the results of experimental studies of the characteristics of air-mechanical foam generated on the deflector type sprinklers and in the foam generating devices with mesh using three brands of general purpose foam concentrates, one brand of special purpose foam concentrate and one brand of foam concentrate used to extinguish fires as a wetting agent. As a result of the analysis, a linear dependence of the volume stability on the expansion rate of the foam was established, and the influence of physical characteristics (wetting ability, surface tension and dynamic viscosity) and the jet speed of the foam concentrate solution on the proportionality coefficient of the established dependence was determined. This dependence relates the stability and expansion rate of foam not only when using deflector type sprinklers for automatic extinguishing systems, but also using nozzles of fire barrels and other foam-generating devices that allow the generation of low-expansion air-mechanical foam, and does not depend on the geometric dimensions of the devices used. The resulting equation makes it possible to determine the stability of foams using the value of their expansion rate. It will help to reduce the time and money spent on experimental determination of the foam stability.

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Dependence of the volume stability on the expansion rate of low-expansion foam

Kamluk,

Likhomanov,

Govor

2024

Vescì Akademìì navuk Belarusì. Seryâ fizika-tehničnyh navuk

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Influence of Chrysotile-Asbestos Microreinforcement of Different Mixes on the Properties and Structure of Foams

Egorova

Popov

Zarovnyaev

et al. 2020

Bulletin of Belgorod State Technological University Named After. V. G. Shukhov

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The paper substantiates the effectiveness and prospects of research in the direction of micro-reinforcement of cellular materials with mineral fibers. Due to the dependence of the quality of foam concrete on the quality of the applied foam, the paper considers micro-reinforcement of foam as a technique that increases its quality indicators. Thus, the influence of chrysotile-asbestos additives in the form of fiber mixtures of various fractional composition on the physical and mechanical properties of foams is considered. Chrysotile-asbestos mixtures are thin fibers and strands that predict their uniform distribution over the matrix of building composites, improving their structural stability and increasing strength characteristics. The article examines the influence of the concentration and fractional composition of chrysotile asbestos on the multiplicity and stability of foams. The features of syneresis and structure of micro-reinforced chrysotile-asbestos foams are also shown. It is shown that the microreinforcement of foam by chrysotile-asbestos fibers increases their structural durability, slowing down the system's syneresis and preventing the deposition of the foam column, but reduces its aeration degree relative to the foaming agent solution. Also, microreinforcement increases the durability of foam in a mortar, characterized by the preservation of foam of the original volume in the composition of the cement mixture. The article substantiates the choice of the most effective mix of chrysotile asbestos and its dosage for increasing the properties of foam.

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The Influence of the Foaming Agents Nature on Physical and Technical Properties of Foam

Cited by 2 publications

References 3 publications

Dependence of the volume stability on the expansion rate of low-expansion foam

Dependence of the volume stability on the expansion rate of low-expansion foam

Influence of Chrysotile-Asbestos Microreinforcement of Different Mixes on the Properties and Structure of Foams

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