Foaming Agent Solution Research Articles

DEVELOPMENT OF A TEST SAMPLE OF A SYSTEM FOR GENERATING AND SUPPLYING COMPRESSED AIR FOAM

An effective fire extinguishing agent for class A fires is the compressed air foam formed in Compressed Air Foam Systems (СAFS). Such systems have become widespread in leading countries such as the USA, Germany, China, and others. It is worth noting that the technical parameters of CAFS (intensity and consumption of an aqueous solution of foaming agent/air), implemented in the practice of fire extinguishing in the form of industrial samples, are designed and manufactured in such a way as to ensure effective extinguishing of developed fires of a significant area. When using existing samples for obtaining compression foam, a problem arises, which lies in the limited possibilities of regulating the supply of compression foam (intensity and consumption of the aqueous solution of the foaming agent/air), under which it is possible to use it with modified additives when extinguishing laboratory fires of solid combustible materials, and the lack of a smooth regulation of its supply. As a result of the research, the authors proposed a compressed air foam system to study its properties with the content of modified additives when changing the composition of the liquid and air that make it up. The manufactured system has the following parameters: multiplicity of 4–20, working pressure of systems of 4–8 bar, smooth adjustment of the consumption of aqueous solution/foaming agent of 2–20 l/min, and smooth adjustment of gas fraction consumption of 8–450 l/min. In particular, it is possible to adjust the consumption of the aqueous solution of the foaming agent and air, to work in dependant and autonomous mode, to regulate the intensity of the foam supply using nozzles of different diameters, and to change the porosity of the porous body in the foam generator. Further, we developed a system for measuring the flow of aqueous solution and air, which is a hardware and software complex. The system allows saving the measurement results to a PC in the form of an Excel spreadsheet for further development of dependencies and simultaneously displaying the flow rate of the aqueous foaming agent solution and air on the display screen and PC in real-time. Keywords: compressed air foam, class A fires, compressed air foam systems, modified additives.

Development of fiber compound foaming agent and experimental study on application performance of foamed lightweight soil

Abstract In order to prepare high-performance foaming agent for field-cast foamed lightweight soil, the fiber compound foaming agent was prepared by the combination of anionic surfactant sodium dodecyl sulfate (SDS) and nonionic surfactant alkyl polyglucoside (APG), supplemented by hydrolyzed polyacryamide (HPAM) as the foam stabilizer. The effects of the mass ratio of surfactant and the content of foam stabilizer on the properties of fiber compound foaming agent were compared and analyzed by testing the surface tension, viscosity, foam volume, and foam half-life. Based on the analysis of foam volume and foam stability of foaming agent, the optimal mass ratio of surfactant and the optimal content of foam stabilizer were optimized. In addition, based on the optimized fiber compound foaming agent to prepare foamed lightweight soil, the influence of different foaming agent concentrations on the application performance of foamed lightweight soil was studied, and the appropriate concentration of fiber compound foaming agent solution was further optimized. Thus, the optimum reaction conditions for preparing SDS-APG compound foaming agent containing foam stabilizer HPAM were proposed as follows: mass ratio of SDS to APG was 2:1, concentration of HPAM was 3.75 wt‰, and concentration of foaming agent was 9.21 wt%.

АНАЛИЗ СИСТЕМ ДОЗИРОВАНИЯ ПЕНООБРАЗОВАТЕЛЯ В НАСОСНЫХ АГРЕГАТАХ ПОЖАРНЫХ АВТОМОБИЛЕЙ: СОСТОЯНИЕ, ПРОБЛЕМЫ, ТЕХНИЧЕСКИЕ РЕШЕНИЯ

The effect of the dosing accuracy of the foaming agent on the properties of the resulting foaming agent solution is shown, depending on the dosing accuracy, the parameters of the design and technological characteristics of the feeding systems and the dosage of the foaming agent. The technical solutions of foaming agent dosing in the systems of fire pumps of mobile fire equipment are considered. The technical solutions and operational characteristics of foam mixers in the systems of fire pumps of fire trucks of State fire service of EMERCOM of Russia are analyzed. The basic requirements for the dosing systems of the foam of fire pumps have been formed, which must be taken into account when developing and manufacturing dosing systems for pumping units of fire trucks.

Experimental study on gas-assisted cyclic steam stimulation under heavy-oil sandstone reservoir conditions: Effect of N2/CO2 ratio and foaming agent

After several rounds of cyclic steam stimulation (CSS), the formation energy of heavy oil reservoirs is depleted. The water content in the reservoir is increased, which leads to a decrease in production. The injection of N2 and CO2 can effectively improve the recovery efficiency. In this paper, the experiments of mixed gas-assisted CSS with different N2/CO2 injection ratios and mixed gas foam-assisted CSS were performed. The temperature change, liquid production, pressure change and residual oil distribution of the sandpack were tested during the experiment, and the influencing factors of enhanced oil recovery were explored. The results show that the range of recovery variation can be divided into an increasing phase from 1:0 to 2:1 and a decreasing phase from 2:1 to 0:1 based on the different injection ratios of N2/CO2. The viscosity reduction of heavy oil under the effect of CO2 dissolution is the dominant factor in the increasing phase, while the formation energy increase under the effect of N2 expansion is the dominant factor in the decreasing phase. The recovery factor is the best when the ratio of injected N2/CO2 is 2:1. The cumulative recovery factor increases by 6.46% after adding the A-9 foaming agent solution. This shows that the mixed gas foam combines the advantages of the mixed gas and foam. It increases the flow resistance and improve the oil displacement efficiency by plugging the lager pore-throat from a microscopic perspective. Therefore, mixed gas foam-assisted CSS can effectively improve the production of heavy oil reservoirs. The research results provide theoretical guidance for improving the effectiveness of the CSS of heavy oil reservoirs.

Composition of the Gas-Air Mixture in the Containment and Suppression of Forest Fires with Promising Extinguishing Agents

This paper presents experimental research findings on the gas composition of pyrolysis and combustion products of typical forest fuels (leaves, needles, twigs, a mixture of these, and timber). These experiments were performed for the combustion and application of a fire extinguishing agent to a pyrolyzing material. Water, a bischofite solution, a bentonite slurry, and a foaming agent solution were utilized. Two gas analysis systems were used, as follows: an industrial one based on CO2, CO, H2, CH4, and O2 sensors and a scientific one (a gas analyzer with H2, CH4, H2S, SO2, CO, and CO2 sensors). Fires were extinguished by using two common techniques, as follows: continuous liquid supply and cycling spraying. The comparative efficiency of applying a group of fire extinguishing agents to forest fires was estimated, taking account of liquid consumption, suppression time, and environmental pollution. A method was proposed for calculating the relative efficiency factors of fire extinguishing agents when containing and suppressing forest fires, allowing for the consumed time, resources, and anthropogenic emissions.

Preparation and transdermal effect of a tip-loaded bubble-soluble microneedle

As a new transdermal drug delivery technology, bubble microneedle could achieve painless and precise drug delivery, which has attracted great attention from researchers. In order to improve the utilization rate of the drug carried by microneedle, we proposed a method for preparing a tip-loaded bubble-soluble microneedle. During the molding process of the microneedle, air bubbles were formed in the needle body, and the drug was concentrated on the needle tip. The preparation process of the bubble microneedle was optimized. The effects of foaming agent concentration, drying temperature, and solution viscosity on the forming of bubble microneedles were explored. Furthermore, the transdermal effect of the product was analyzed. The experimental results showed that the bubble microneedle forming process was stable, with the forming rate above 90% and the forming cycle shortened to about 4 h. The drug was mainly concentrated on the tip of the microneedle, with a length of 180 μm, and the length of the bubble was 250 μm. Moreover, the microneedle array can create microchannels on the mouse skin, and the needle bodies can be rapidly dissolved within 5 min. The bubble microneedle could rapidly release about 48% of the drug within 1 min and about 91% of the drug within 5 min. The bubble microstructure of the microneedle array hindered the diffusion of the drug to the substrate, which improves the utilization rate of the drug. This study provides a technical basis for the practical application of microneedle for transdermal drug delivery.

Determination of factors effecting the properties of water-air microdispersion

The article presents the results of laboratory studies on the effect of the liquid-gas ratio and the foaming agent type on the average water-air micro dispersion size obtained from the foaming agent solution. The size of microbubbles significantly effects the efficiency of flotation and depends on the type and concentration of foaming agent used for their production. A generator was used to obtain water-air micro dispersion. The works were performed to work out the water-air micro dispersion parameters of at different liquid-gas ratio and different performance of the generator. The following foaming agents were used as objects of research: sodium butyl aero flot (BTF), flotanol C-7, butyl triethylenetetramine (B-TETA) at a concentration of 0.5 g/dm3. It has been established, that the optimal phase liquid-gas ratio was 1:1, the optimal capacity of the generator was 6-7.2 dm3/h with an average particle size of air-water micro dispersion- 33-41 mm for BTF solution, 103-107 mm for C-7 solution, 90-93 mm for B-TETA solution. The type of foaming agent used in flotation effects the size and stability of microbubbles. It is established that the flotation agents can be arranged in the following line with respect to their ability to create micro dispersion: IIBK→Senfroth 580→B-TETA→OPSB→Flotanol C-7→T-92→BTF. The best results are shown by BTF that creates micro dispersion of 43-58 μm (t 20-40 °С) and stability of 80 sec with concentration of 0.5 g/dm3.

Experimental Study on Application Performance of Foamed Concrete Prepared Based on a New Composite Foaming Agent

The performance of foaming agent plays a key role in the forming quality of foamed concrete. In order to overcome the limitation of single composition of traditional foaming agent, this paper adopts the research method of multicomponent composite combined with the foaming theory and preparation technology of foaming agent, a new protein composite foaming agent was prepared using a mixture of anionic surfactant (SCA), nonionic surfactant (APG), and foam stabilizer (AR), and then, the effects of different surfactant mass ratios and foam stabilizer concentrations on the properties of composite foaming agent were studied by a series of tests. The results show that the optimal mass ratio of surfactants is mAPG: mSCA = 2 : 1, and the optimal concentration of foam stabilizer is 0.5 g/L, which verified that the self-made composite foaming agent system in this paper has the advantages of strong foaming ability, excellent foam stability, and low cost. In addition, foamed concrete was prepared on the basis of the optimized composite foaming agent system, and the influence rules of different foaming agent solution volumes, water-cement ratios, and diatomite dosages on the performance of foamed concrete were revealed through laboratory tests and SEM images. At the same time, the optimal ratio of each component required for the preparation of high-quality foamed concrete was further obtained by using the response surface analysis of compressive strength. The research results provide an important reference for the preparation of high-performance foamed concrete and corresponding foaming agent, which is beneficial for solving the disadvantages of poor foam stability in the existing foaming agents and improving the application level of foamed concrete in engineering construction.

Preparation and flame retardant property of nano-aluminum hydroxide foam for preventing spontaneous coal combustion

The spontaneous combustion of coal in goaf was effectively prevented by adding nano-aluminum hydroxide (Nano-ATH) into the composite foaming agent solution in the preparation of a nano-ATH foam with favorable formability and high stability. The compound scheme and amounts of surfactants and nano-ATH were studied using an interfacial rheometer and foam scanner, and the flame retardant property of the prepared nano-ATH foam was explored with a cone calorimeter. Results showed that when surfactants B and E were compounded in a mass ratio of 1:1. The compounded system had a mass concentration of 0.4% and the most uniform and finest foam. After nano-ATH was added, the viscoelasticity modulus of the foam liquid film was elevated from 0.91 mN/m to 3.08 mN/m, and the foam volume increased from 380 mL to 700 mL. At a mass concentration of 2%, the half-life period of the foam increased from 78 s to 453 s, indicating that the nano-ATH increased the mechanical strength of the liquid film, enhanced foam stability, and enlarged the foaming volume. In the coal samples with nano-ATH foam, the time to ignition increased from 26 s to 176 s, time of sustained combustion decreased from 520 s to 211 s, peak heat release rate declined from 117 kW/m2 to 58 kW/m2, and peak smoke production rate declined from 0.084 m2/s to 0.0049 m2/s during combustion, all indicating good flame retardant and smoke-suppression properties.

Mathematical modeling of gas-liquid flow in compressed air foam generation systems

The object of research is the compression foam supply system. One of the most problematic areas in the design of compression foam supply systems is the need to obtain a certain type of foam with the necessary properties, depending on the class of fire for which it will be used to extinguish. It is necessary to take into account the technological process of foam formation, namely, the regulation of the flow of the foaming agent solution and compressed air, which are fed into the mixing chamber, where the foam is generated directly. It is important to ensure optimal parameters depending on the purpose of the foam outlet flow installation: flow rate, foam ratio and foam stability. In order to design a compression foam supply system with certain technological parameters, it is necessary to obtain these parameters analytically in advance, for which it is necessary to construct an appropriate mathematical model.In the course of the research, let’s use the Simulink graphical simulation environment (integrated into the MatLab software environment), which allows building dynamic models using separate blocks in the form of directed graphs. The structure of such a model is built on the basis of separate, independent blocks, which in themselves are separate mathematical models.New is the development of a mathematical model of a two-phase flow: a liquid phase consisting of a mixture of water with a foaming agent and a gas phase - air in the foam generator path as part of a block diagram of an installation for the case of generation of compression foam. And also the development of a scheme and communication algorithm for serially connected blocks of a common block diagram. This ensures the receipt of the calculated output data of the stationary mode of operation of the installation.The mathematical model developed in this work allows solving the following applied and scientific problems:– to carry out calculations of the input parameters of the installation, which will provide the required output parameters: flow power, frequency ratio, continuous generation time, foam resistance, determined by the purpose and features of the installation in conditions of extinguishing various types of fires;– to investigate the influence of the parameters of the foam generation insert of the installation on the expansion of the compression foam.

Определение параметров эффективности пенообразователей для подслойного тушения бензинов, содержащих водорастворимые горючие жидкости

In case of fires in tanks with a fixed roof (except for tanks with oils and fuel oils), it is allowed to use layer-bylayer extinguishing with low expansion foam. This method of fire extinguishing is well studied in relation to flammable liquids that do not contain water-soluble (polar) components. Foam based on fluorine-containing foaming agents is used, which creates a film on the surface of the flammable liquid, which prevents the evaporation of flammable vapors and promotes spreading of the foam. However, the introduction of watersoluble (polar) components into a combustible liquid (they are contained, for example, in motor gasoline) can lead to a decrease in film formation and an intensification of foam destruction. As part of the research work, experimental studies have been accomplished to determine the possibility of layered extinguishing of gasoline in tanks using fluorosynthetic film-forming foaming agents of the AFFF type. A series of tests have confirmed the possibility of layered extinguishing of an alcohol-containing combustible liquid in a tank at a standard rate of supply of a foaming agent solution with a specially modified formulation during the course of the study. A list and values have been established, and methods have been formulated for determining the parameters affecting the fire extinguishing efficiency of foaming agents intended for layered extinguishing of oil and petroleum products (including gasoline) in tanks.

Моделирование тушения пожаров нефтепродуктов в резервуарах с применением водопенных огнетушащих веществ

The decisive parameter in the design of automatic fire extinguishing systems in the depots for storing oil and oil products, the organization of fire extinguishing in the tanks with mobile equipment is the standard (critical) foaming agent supply rate. The purpose of this work is to evaluate the influence of the scale of model fire centers and their design on the values of critical intensity of the foam solution supply. The article presents the results of the analysis of the scientific studies of the process of oil products combustion and approaches to determining the standards for supplying a foaming agent solution to extinguish fires in the tanks. It is shown that the existing fire extinguishing modeling methods in the tanks do not fully take into account the effect on the extinguishing process of the following factors: the  change in the rate of oil products burn-up depending on the tanks sizes, the transformation of the aerodynamic characteristics of the medium in the vicinity of the combustion zone, the scale and design of model combustion centers, means and methods of foam supply. The analysis of the work on estimating the burn-up rate of flammable liquids in the tanks of various diameters does not allow to conclude what the minimum size of the experimental tank should be, so that the results obtained for determining the critical intensity of the foam solution supply would not cause anyone doubts. The paper presents the results of mathematical modeling of changes in the heat flux density on the surface of burning gasoline in the tanks with a diameter of 3 m, 5 m and 21 m. It is shown that combustion in small-diameter tanks does not simulate the thermal regime of a fire implemented on the large-diameter tanks. Consequently, the foaming agent solutions critical on intensity supply for small and large tanks differ from each other.  The combustion source used in a number of documents do not simulate the conditions for heating the side of a real tank, which explains the failure to extinguish fires in the large tanks. It is proposed to determine the intensity of the foaming solution supply, evaluate the efficiency of means and methods for producing foam in full-scale tanks or their mock-ups, which is economically justified and ensures the results reliability.

Modified mix design and statistical modelling of lightweight concrete with high volume micro fines waste additive via the Box-Behnken design approach

The research paper presents a modified mix design to develop cellular foamed concrete (CFC) using hazardous micro fine in-situ stone sludge waste in the form of low grade dolomitic marble slurry (MS), as a replacement of fine river sand (FRS) and tap water. To utilize maximum amount of MS, optimization was done through the Box-Behnken design (BBD) of response surface methodology (RSM). The effects of three effective variable parameters i.e. temperature of water to be added into foaming agent solution (Tw), flow value (FV) and percentage replacement level of MS (%Rms) on the four responses i.e. oven dry density (ρOD), compressive strength at 28 days (fc.28d), strength performance factor at 28 days (PFc.28d) and thermal conductivity (λ-value) were stastically analyzed.ANOVA and multi-objective optimization was performed to finalize the mix having desirable hardened and functional properties. ρOD, fc.28d and λ-values of the CFC were varied in the range from 985 kg/m3 to 1268 kg/m3, from 3.89 MPa to 4.94 MPa and from 0.340 to 0.441 W/m.K, respectively. Advanced characterization techniques such as- field emission scanning electron microscopy (FE-SEM) and 3D morphological analysis were also performed to investigate the interaction of MS with CFC microstructure and cement paste matrix. The ρOD, compressive strength (CS), and λ-value of the CFC sample, mixed with 60.0 wt% MS; was 1046 kg/m3, 4.19 MPa, and 0.372 W/m⋅K, respectively.

ВЛИЯНИЕ МИКРОАРМИРОВАНИЯ ХРИЗОТИЛ-АСБЕСТОМ РАЗНЫХ МАРОК НА СВОЙСТВА И СТРУКТУРУ ПЕН

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.

Foaming performance test of palm oil foaming agent solution for prevention and fire extinguishing on peatland surface

This research aims to test the performance of palm oil foaming agent solution (POFAS) in a laboratory for the prevention and fire extinguishing of a peatland surface. The materials used in this research were POFAS formulas, i.e. NF45 and NF46, at various concentrations of 1%, 2%, 3%, and 6%. Measuring tools and machines used were patternator and spraying measurement tools, a knapsack mist blower for the foam method, a knapsack electric sprayer, and an air blower for the non-foam method. Results of this research showed that the minimum droplet diameter, maximum droplet density, maximum effective spraying width, and minimum effective spraying debit were 452.06 μm, 136.22 droplets cm−2, 72 cm, and 1.47 liter min−1 for foam method, and 452.24 μm, 148.33 droplets cm−2, 56 cm, and 1.84 liter min−1 for non-foam method. In the foam method, the NF45 formula with a concentration of 2% was the most effective POFAS formula for the prevention and extinguishing of the peatland surface because it has the largest ability to cover the peat surface pore spaces. In the non-foam method, the NF46 formula with a concentration of 3% was the most efficient POFAS formula because it has a large effective spraying width and the smallest effective spraying debit so that this POFAS application was the shortest and most efficient in POFAS consumption.

Numerical simulation and laboratory evaluation of alkali–surfactant–polymer and foam flooding

Tertiary recovery techniques such as alkali–surfactant–polymer flooding (henceforth ASP) and foam flooding have been widely administered in production operations of oil reservoirs which have led to the higher value of oil recovery factor, especially in heavy-oil reservoirs. The objective of this extensive study is to provide a comparative study between numerical simulation which was used by the commercial software implicit pressure and explicit composition (henceforth IMPEC) and experimental investigation for different injectivity scenarios of foaming agent and ASP solution after water and gas flooding on the oil recovery enhancement. To do this, simulation parameters for each scenario were considered in the simulator to investigate the results of each scenario on the oil recovery enhancement. Due to the presence of a gas phase in the realistic performances, the experiments were performed in the presence of three-phase fluids to match the results with the operational circumstances. Moreover, regarding the lack of information about the considerable influence of in situ gas which is in the trapped and continuous phase, the dissolved gas is taken into the evaluation. To validate the simulation analysis, an experimental investigation was performed for different scenarios and selected the optimum injectivity scenario. Consequently, regarding the presence of gas phase, ASP flooding after gas and water flooding had the maximum oil recovery factor and was considered as the optimum technique to produce initial oil in place. The reason for this phenomenon is elaborated to the more feasibility of gas phase which had led to the more mobilization of the oleic phase in the porous medium.

Experimental study on improving performance of dust-suppression foam by magnetization

Foam is an effective material for controlling industrial dust. To optimize and upgrade the performance of dust-suppression foam, this paper proposes a method of exposing the foaming agent solution to a magnetic field of specific intensity prior to foaming. The effects of magnetization on foaming capacity, foam stability and foam size were investigated. Two types of foaming agent, anionic and non-ionic, were selected to test the foam expansion (FE) and foaming time (FT), both reflecting the foaming capacity, and foam stability (FS) at different concentrations before and after magnetization. The size of the bubbles, which directly affects the dust suppression performance, was also examined. The experimental results indicated that the foaming capacity and foam stability of the foaming agent solution after magnetization were higher than that of the original solution, and the size distribution of the bubbles has a trend to concentrate towards smaller size ranges. It proves that magnetization can enhance the performance of dust-suppression foam and reduce the quantity of foaming agent. Then we explored the mechanism of the observed experimental phenomena. This study is of significant importance in promoting foam as a more efficient material in dust control.

Effect of water-soluble polymers on the performance of dust-suppression foams: Wettability, surface viscosity and stability

Foam dust suppression is an important way to control dust hazards. Polymers are believed to be able to change foam properties. To investigate the effect of polymers addition to foaming agent solution on the key dust-suppression performance of the foam, tests were conducted by measuring and comparing the contact angle, viscous modulus and foam-drainage rate of several different surfactant/polymer solutions, which can characterize the wettability, surface viscosity and stability of foam. The results show that the polymer (HEC, HPAM, PVA) addition increased the contact angle between the liquid and coal dust by increasing the surface tension of the surfactant solution. The variation is more obvious with an increase in polymer concentration (especially over 0.3 wt.‰); simultaneously, the polymer increases the surface viscosity of the foaming agent solution significantly, and slows down the foam-drainage rate, which is advantageous for increasing the foam stability. Because of the variation, the low concentration of polymer (0.1–0.3 wt.‰) has a weak influence on the wetting ability of the foaming agent while improves the surface viscosity and stability of foam significantly, which is an improvement in terms of the dust-suppressing ability of foams.

Пеногенератор пожарного ствола СПРУК 50/0,7 «Викинг»

Приведены результаты экспериментальных исследований пеногенератора СПРУК 50/0,7 «Викинг» с различным размером ячеек сетки. Представлена испытательная установка, ее характеристики, условия проведения экспериментов. По результатам получены зависимости кратности пены от расхода огнетушащего вещества и характеристик сетки, дано заключение и подготовлены изменения в конструкторскую документацию.

Experimental Study on Optimization of Indoor Foaming Agent Concentration

Aiming at the selection of foaming agent in air foam flooding technology, in this paper,Ross-miles static experiment on the seven groups of surfactants at different concentrations of foam bubble height and half-life determination determines two important factors that affect the performance of a frothing agent:foaming volume and foam stability. It is also an important indicator of screening frothing agent in practical application. The experimental results show that the foaming volume and the stability of different foaming agents are different, the bubble volume of all blowing agents increased with increasing concentration, and the optimum concentration of most of the foaming agent solution is 0.5%. However, some foaming agents such as ZJ008 and KHD570A appeared foam hollow and fast defoaming at low concentration. They cannot be used as a practical frothing agent.