Cleaning agent, method for producing the same, and use thereof

Abstract

The application provides a cleaning agent and a preparation method and application thereof, and relates to the technical field of cleaning agents. The cleaning agent is mainly composed of non-ionic surfactant, diutan gum, hyperbranched polyamidoamine, defoaming agent, antifreeze and water. The non-ionic surfactant and the diutan gum jointly have good removal capacity for road dirt mainly containing oil sludge, sand and gravel impurities and other impurities. The hyperbranched polyamidoamine is added and interacts with other components, thereby having a good protection effect on the high-pressure water jet equipment and preventing wear and blockage caused by long-term use. Meanwhile, the cleaning agent formula is mild, can be stored in a water tank for a long time, and can achieve good cleaning effect at a low concentration, thereby ensuring the economy and environmental protection on the basis of ensuring the cleaning applicability in the scene. The application also provides a preparation method of the cleaning agent.

Description

Technical Field

[0001] This invention belongs to the field of cleaning agent technology, and relates to a cleaning agent, its preparation method and application. Background Technology

[0002] As the first window to the public in a city, highway toll stations not only carry out toll collection but also represent the social image of the entire highway industry. Therefore, maintaining a clean and hygienic environment at highway toll stations is of paramount importance.

[0003] Due to the large number of vehicles stopping, inspecting, and paying tolls at highway tollbooth lanes, and the long periods of vehicle congestion, exhaust fumes, leaked oil, wastewater, dust, and other solid particles mix and form a layer of heavy grease on the road surface that is difficult to remove with conventional cleaning agents. This heavy grease can seep into tiny pits in the concrete surface, forming a thick, paint-like film of heavy grease, commonly known as road sludge (specifically as...). Figure 1 As shown in the image, the sludge severely impacts the city's appearance. In hot weather, the sludge softens, causing vehicles to skid when parking and paying tolls, creating safety hazards. Furthermore, the sludge produces toxic volatile gases with an unpleasant odor, posing a potential health risk to personnel working long hours at the tollbooth. Currently, there is no effective method for cleaning the concrete sections of the tollbooth; manual scraping and brushing are still the primary methods, requiring at least two people working simultaneously with a large volume of water for washing. Cleaning a 25-meter lane takes approximately two hours. Due to the unique physical and chemical properties of the sludge, this conventional cleaning technique is time-consuming, labor-intensive, and ineffective, leaving noticeable oil stains on the road surface after treatment.

[0004] Compared to conventional road cleaning and maintenance operations and material surface cleaning operations, this application scenario has the following differences – namely, the technical challenges that need to be addressed:

[0005] (1) The target of this invention—the road surface dirt at highway toll station lanes—has certain unique characteristics. It is actually a mixture of oil sludge, gravel, and other impurities, rather than pure high-boiling-point organic matter. Therefore, the heavy oil cleaning agents commonly used in the catering and petroleum industries are not suitable for this application, regardless of their formulation or concentration ratio.

[0006] (2) Highway toll stations have certain special characteristics. They need to be constructed quickly to reduce the impact on traffic. Since there are no drainage channels on the road surface, the formula needs to be environmentally friendly, not affect the image of the toll station, and have no or as few residual substances as possible to avoid affecting the road surface performance. The concentration of additives is low, the construction operation is simple, and it can be combined with rapid mechanical and semi-mechanical operations.

[0007] There are also numerous publicly available reports on cleaning agents used for road surfaces. For example, the literature "Research and Development of High-Efficiency Road Oil Stain Cleaning Agent" mainly addresses the problem of road oil stains, but its developed formula is primarily designed for heavy grease components from catering establishments, and is not suitable for road surface dirt on highway toll station lanes, which are mainly composed of sand and gravel impurities. The literature "Special Cleaning Agent for Highway Toll Station Lanes" involves a special cleaning agent for highway toll station lanes, but its main component is organic matter (smokeless kerosene), which is a mechanical cleaning agent and does not meet the needs in terms of environmental protection and economy. CN115125064A, CN113698977A, and CN108611204B have all developed corresponding sludge cleaning agents, but they are designed for applications such as cleaning metal material surfaces and are not suitable for cleaning highway toll station lanes.

[0008] In view of this, the present invention is hereby proposed. Summary of the Invention

[0009] In view of the shortcomings and defects of the existing technology, the present invention aims to provide a cleaning agent that has a good cleaning effect on dirt on driveway surfaces.

[0010] To achieve the above objectives, the following technical solution is adopted:

[0011] This invention provides a cleaning agent comprising the following components by mass fraction:

[0012] Nonionic surfactant 20-30%, precipitant 0.1-2.0%, hyperbranched polyamide amine 0.1-0.5%, defoamer 0.5-2.0%, antifreeze 0-30%, and the balance water.

[0013] Furthermore, based on the above-described technical solution of the present invention, the nonionic surfactant includes alkyl glycoside surfactants.

[0014] Furthermore, based on the above-mentioned technical solution of the present invention, the alkyl glycoside surfactant includes one or a combination of at least two of the alkyl glycosides with the brand names APG1214, APG0810 or APG0814.

[0015] Furthermore, based on the above technical solution of the present invention, the molecular weight of the hyperbranched polyamide amine is 8000-13000 g / mol;

[0016] And / or, the total amine value of the hyperbranched polyamide amine is 0.05-0.09 mol / g.

[0017] Furthermore, based on the above-mentioned technical solution of the present invention, the defoamer includes one or a combination of at least two of the defoamers with the brand names Dow Corning AFE-3168, Dow Corning AFE-7610, BASF DF9010F or Air Chemical DA745.

[0018] Furthermore, based on the above-mentioned technical solution of the present invention, the antifreeze includes one or a combination of at least two of ethylene glycol, propylene glycol, or diethylene glycol.

[0019] The present invention also provides a method for preparing the above-mentioned cleaning agent, comprising the following steps:

[0020] The formulation amounts of the precipitate, hyperbranched polyamide amine, and water are first mixed, and then the formulation amounts of nonionic surfactant, defoamer, and antifreeze are added for a second mixing to obtain the cleaning agent.

[0021] Furthermore, based on the above technical solution of the present invention, both the first mixing and the second mixing are performed by stirring;

[0022] And / or, the temperature of the first mixture is 70-85°C;

[0023] And / or, the temperature of the second mixture is ≤50℃, and the time of the second mixture is ≥20min.

[0024] The present invention also provides the application of the above-mentioned cleaning agent in the cleaning of toll station lanes.

[0025] Furthermore, based on the above-mentioned technical solution of the present invention, the cleaning agent is injected into the water jet device for simultaneous dilution, and then sprayed out to clean the dirt on the road surface.

[0026] And / or, the tollbooth lanes include highway tollbooth lanes.

[0027] Compared with the prior art, the technical solution of the present invention has at least the following technical effects:

[0028] (1) This invention provides a cleaning agent, mainly composed of nonionic surfactant, sorbent polymer, hyperbranched polyamide amine, defoamer, antifreeze agent, and water. The nonionic surfactant and sorbent polymer work together to effectively remove road surface contaminants, primarily oil sludge, gravel, and other impurities. Simultaneously, the addition of hyperbranched polyamide amine, interacting with other components, provides excellent protection for high-pressure water jet equipment (e.g., pumps, nozzles), preventing wear and clogging caused by long-term use. Furthermore, the cleaning agent formula is mild, allowing for long-term storage in water tanks. A low concentration of this cleaning agent achieves good cleaning results, ensuring both applicability to this cleaning scenario and economic efficiency and environmental friendliness.

[0029] (2) The present invention also provides a method for preparing the above-mentioned cleaning agent, which is simple in process and easy to operate. Attached Figure Description

[0030] Figure 1 Map of asphalt grease on the lane surface of a highway toll station;

[0031] Figure 2 This is an infrared characteristic spectrum of the sludge on the road surface of a highway toll station lane, as described in this invention. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of this invention will be clearly and completely described below in conjunction with the embodiments of this invention. Those skilled in the art should understand that the embodiments described are merely illustrative of the invention and should not be considered as specific limitations thereof. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention. Process parameters not specifically specified in the following embodiments are generally performed under conventional conditions.

[0033] The endpoints and any values ​​of the ranges disclosed in this invention are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of the various ranges, the endpoint values ​​of the various ranges and individual point values, and individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed in this invention.

[0034] According to a first aspect of the present invention, a cleaning agent is provided, comprising the following components by mass fraction:

[0035] Nonionic surfactant 20-30%, precipitant 0.1-2.0%, hyperbranched polyamide amine 0.1-0.5%, defoamer 0.5-2.0%, antifreeze 0-30%, and the balance water.

[0036] Specifically, eutrophic colloid is a novel bio-based polymer with high viscosity, water solubility, and pH stability. Unlike traditional cellulose ethers, eutrophic colloid exhibits high viscosity under low shear, good pseudoplasticity, water retention, thermal stability, and compatibility even at extremely low addition levels. In the cleaning agent of this invention, eutrophic colloid primarily functions as a suspension and dispersion agent. In specific cleaning applications, it can significantly improve the flowability of dirt and water in cleaning wastewater, increase their cohesiveness, and reduce the tendency for redeposition and segregation. The dosage of eutrophic colloid in the cleaning agent is limited. If the mass fraction of eutrophic colloid is too high (exceeding 2.0%), the cleaning effect will not be significantly increased, resulting in material waste. If the mass fraction of eutrophic colloid is too low (below 0.1%), the cleaning effect will not be achieved. Therefore, typical but non-limiting mass fractions are 0.1%, 0.2%, 0.5%, 0.8%, 1.0%, 1.2%, 1.4%, 1.5%, 1.8%, or 2.0%, or any range between any two points.

[0037] Hyperbranched polyamide amine (HPAMAM) is a polyamine hyperbranched polymer with a non-entangled network structure, excellent film-forming properties, and infinite miscibility with water. Its highly branched internal unique nanoporous three-dimensional structure can chelate other components of the cleaning agent. With the combined effect of all components, this cleaning agent formulation is mild. In specific cleaning applications, it can be added to the water tank in advance for use with high-pressure water jet equipment. Simultaneously, hyperbranched polyamide amine can effectively protect pumps, nozzles, and other mechanical parts, preventing wear and clogging caused by long-term use. The dosage of hyperbranched polyamide amine in the cleaning agent should not be too high or too low. If the mass fraction of hyperbranched polyamide amine is too low (below 0.1%), the cleaning effect will not be achieved. If the mass fraction of hyperbranched polyamide amine is too high (above 0.5%), it will corrode the relevant mechanical parts. Therefore, the typical but non-limiting mass fraction of hyperbranched polyamide amine is 0.1%, 0.2%, 0.3%, 0.4%, or 0.5%, and the numerical range between any two points.

[0038] Nonionic surfactants act as excellent emulsifiers, allowing for the mixing of polar and nonpolar phases without easily separating into layers, thus facilitating absorption and cleaning. Typical, but not limiting, mass fractions of nonionic surfactants are 20%, 22%, 24%, 25%, 26%, 28%, or 30%, and any range between these values.

[0039] Defoamers minimize the amount of air bubbles produced by cleaning agents during subsequent use (dilution and mixing), thus allowing for greater absolute liquid space in the clean water tank and the wastewater recovery tank. Typical, but not limiting, mass fractions of defoamers are 0.5%, 0.8%, 1.0%, 1.2%, 1.4%, 1.5%, 1.8%, or 2.0%, and any range between any two points.

[0040] Antifreeze can be selectively added according to the actual application requirements. When the application environment has a low temperature, such as a northern winter, antifreeze can be added to the cleaning agent to ensure the cleaning effect. Typical, but not limiting, mass fractions of antifreeze are 0%, 2%, 5%, 8%, 10%, 12%, 14%, 15%, 18%, 20%, 22%, 24%, 25%, 28%, or 30%.

[0041] The cleaning agent provided by this invention mainly consists of nonionic surfactants, a precipitant, hyperbranched polyamide amine, defoamer, antifreeze, and water. The nonionic surfactants and precipitant work together to effectively remove road surface contaminants, primarily oil sludge, gravel, and other impurities. Simultaneously, the addition of hyperbranched polyamide amine, interacting with other components, provides excellent protection for high-pressure water jet equipment (e.g., pumps, nozzles), preventing wear and clogging caused by long-term use. Furthermore, this cleaning agent has a mild formulation, allowing for long-term storage in water tanks. The formulation ratio is significantly lower than commonly used heavy-duty oil cleaners on the market, meaning a lower concentration achieves good cleaning results. This ensures both applicability to the cleaning scenario and economic efficiency while being environmentally friendly.

[0042] In addition, due to the good synergistic effect of its components, this cleaning agent can quickly and evenly dissolve in water during dilution and maintain long-term uniform stability, thus improving the efficiency of construction operations.

[0043] It should be noted that the term "comprising" in this invention means that, in addition to the raw materials mentioned above, it may also include other raw materials acceptable in the field of cleaning agents, such as preservatives, pH adjusters, etc., which can impart different properties to the cleaning agent. Furthermore, the term "comprising" in this invention can also be replaced with the closed-ended phrase "is" or "made from...".

[0044] As an optional embodiment of the present invention, the nonionic surfactant includes alkyl glycoside surfactants, which are bio-based substances and meet the high environmental protection requirements for road operations.

[0045] As an optional embodiment of the present invention, the alkyl glycoside surfactant includes one or a combination of at least two of the alkyl glycosides with the brand names APG1214, APG0810 or APG0814.

[0046] The source of the hyperbranched polyamide amine is not specifically limited; it can be purchased or prepared in-house. As an optional embodiment of the invention, the hyperbranched polyamide amine is mainly synthesized from two monomers: divinyltriamine and methyl acrylate, an unsaturated carbonyl compound.

[0047] As an optional embodiment of the present invention, the preparation method of hyperbranched polyamide amine includes the following steps:

[0048] (1) Add methyl acrylate to a methanol solution of divinyltriamine and carry out an addition reaction at 0-30°C (e.g., 0°C, 5°C, 10°C, 15°C, 20°C, 25°C or 30°C, etc.) for 1-12 h (e.g., 1 h, 2 h, 4 h, 6 h, 8 h, 10 h or 12 h, etc.); wherein the molar ratio of divinyltriamine to methyl acrylate is 1:(1-2) (e.g., 1:1, 1:1.5 or 1:2, etc.);

[0049] (2) After the reaction is completed, the temperature is raised to 60℃, 100℃, 120℃ and 140℃ in four stages. The first two heating stages are maintained by a water pump and the last two heating stages are maintained by an oil pump. The total reaction time is 6-24h (e.g. 6h, 8h, 10h, 12h, 16h, 18h, 20h, 22h or 24h, etc.) to obtain hyperbranched polyamide amine.

[0050] It should be noted that the total reaction time includes the reaction time of step (1) and the reaction time of step (2).

[0051] As an optional embodiment of the present invention, the molecular weight of the hyperbranched polyamide amine is 8000-13000 g / mol. Typical but non-limiting molecular weights are 8000 g / mol, 8500 g / mol, 9000 g / mol, 9500 g / mol, 10000 g / mol, 10500 g / mol, 11000 g / mol, 11500 g / mol, 12000 g / mol, 12500 g / mol, or 13000 g / mol, etc.

[0052] Hyperbranched polyamide amines possess numerous primary, secondary, and tertiary amine groups, allowing them to be miscible with water in any proportion. Their highly disordered, divergent branched structure prevents intramolecular and intermolecular chain entanglement, resulting in good flowability, easy formation of a lubricating protective film, and resistance to condensation and drying. As an optional embodiment of this invention, the total amine value of the hyperbranched polyamide amine is 0.05-0.09 mol / g. Typical but non-limiting total amine values ​​are 0.05 mol / g, 0.06 mol / g, 0.07 mol / g, 0.08 mol / g, or 0.09 mol / g.

[0053] As an optional embodiment of the present invention, the defoamer includes one or a combination of at least two of the defoamers with the brand names Dow Corning AFE-3168, Dow Corning AFE-7610, BASF DF9010F or Air Chemical DA745.

[0054] As an optional embodiment of the present invention, the antifreeze includes one or a combination of at least two of ethylene glycol, propylene glycol, or diethylene glycol.

[0055] By limiting the specific types of raw materials in the cleaning agent, the resulting cleaning agent becomes more effective at cleaning oil sludge from toll station lanes and is also more suitable for mechanical high-pressure water jet operations.

[0056] According to a second aspect of the present invention, a method for preparing the above-mentioned cleaning agent is provided, comprising the following steps:

[0057] The formulated amounts of the precipitate, hyperbranched polyamide amine, and water are first mixed, and then the formulated amounts of nonionic surfactant, defoamer, and optional antifreeze are added for a second mixing to obtain the cleaning agent.

[0058] The preparation method is simple and easy to operate.

[0059] As an optional embodiment of the present invention, both the first mixing and the second mixing are carried out by stirring.

[0060] As an optional embodiment of the present invention, the temperature of the first mixing is 70-85°C; typical but non-limiting temperatures are 70°C, 72°C, 74°C, 75°C, 76°C, 78°C, 80°C, 82°C, 84°C or 85°C.

[0061] As an optional embodiment of the present invention, the temperature of the second mixing is ≤50℃ (e.g., 20℃, 25℃, 30℃, 35℃, 40℃, 45℃ or 50℃, etc.), and the time of the second mixing is ≥20min (e.g., 20min, 25min, 30min, 35min, 40min, 45min, 50min or 60min, etc.).

[0062] In a preferred embodiment of the present invention, the preparation method of the above-mentioned cleaning agent includes the following steps:

[0063] Add the prescribed amount of water to the reactor and heat it to about 80°C. Then add the precipitate and stir to disperse and dissolve it. Next, add the hyperbranched polyamide amine and continue stirring to carry out the first mixing. After the first mixing is completed, cool it down to below 50°C and add the nonionic surfactant, defoamer, and antifreeze in sequence. Continue stirring to carry out the second mixing. After mixing evenly, the cleaning agent is obtained.

[0064] As an optional embodiment of the present invention, the mixing time between each component is ≥10 min, that is, there is a mixing time of ≥10 min between the nonionic surfactant, defoamer, and antifreeze.

[0065] A third aspect of the present invention also provides the application of the above-mentioned cleaning agent in the cleaning of toll station lanes.

[0066] As an optional embodiment of the present invention, the cleaning agent is injected into the water jet device for simultaneous dilution, and then sprayed out to clean the dirt on the road surface.

[0067] It should be noted that the process of injecting the cleaning agent into the water jet equipment is the dilution process itself, and no further dilution is required. The amount of cleaning agent used is approximately 1-10%, depending on the degree of road surface contamination.

[0068] As an optional embodiment of the present invention, the toll station lane includes a highway toll station lane.

[0069] In one optional embodiment of the present invention, the road surface contaminants in highway tollbooth lanes mainly consist of sludge, gravel, and other impurities. These other impurities include airborne particulate matter, rubber debris from tire wear, and so on.

[0070] The present invention will now be described in further detail with reference to specific embodiments and comparative examples.

[0071] Example 1

[0072] This embodiment provides a cleaning agent comprising the following components by mass fraction:

[0073] The ingredients are: 25% nonionic surfactant, 0.5% precipitant, 0.2% hyperbranched polyamide amine, 0.5% defoamer, 10% antifreeze, and the balance being water.

[0074] The nonionic surfactant is APG1214; the defoamer is AFE-3168; and the antifreeze is ethylene glycol.

[0075] The hyperbranched polyamide amine has a molecular weight of 10000 g / mol and a total amine value of 0.08 mol / g. The preparation method of the hyperbranched polyamide amine includes the following steps:

[0076] (1) Methyl acrylate was added to a methanol solution of divinyltriamine and an addition reaction was carried out at 0°C for 8 hours; wherein the molar ratio of divinyltriamine to methyl acrylate was 1:1.

[0077] (2) After the reaction is completed, the temperature is raised to 60℃, 100℃, 120℃ and 140℃ in four stages. The first two heating stages are maintained by a water pump and the last two heating stages are maintained by an oil pump. The total reaction time is 12h; that is, hyperbranched polyamide amine is obtained.

[0078] The preparation method of this cleaning agent includes the following steps:

[0079] Add the prescribed amount of water to the reactor and heat it to about 80°C. Then add the precipitate and stir to disperse and dissolve it. Next, add the hyperbranched polyamide amine and continue stirring to carry out the first mixing. After the first mixing is completed, cool it down to below 50°C and add the nonionic surfactant, defoamer, and antifreeze in sequence. Continue stirring to carry out the second mixing. After mixing evenly, the cleaning agent is obtained.

[0080] Example 2

[0081] This embodiment provides a cleaning agent, except that the mass fraction of the precipitant is adjusted from 0.5% to 0.1%, while the other raw material types, amounts, and preparation methods are the same as in Example 1.

[0082] Example 3

[0083] This embodiment provides a cleaning agent, except that the mass fraction of the precipitant is adjusted from 0.5% to 2.0%, while the other raw material types, amounts, and preparation methods are the same as in Example 1.

[0084] Example 4

[0085] This embodiment provides a cleaning agent, except that the mass fraction of hyperbranched polyamide amine is adjusted from 0.2% to 0.1%, while the other raw material types, amounts, and preparation methods are the same as in Example 1.

[0086] Example 5

[0087] This embodiment provides a cleaning agent, except that the mass fraction of hyperbranched polyamide amine is adjusted from 0.2% to 0.5%, while the other raw material types, amounts, and preparation methods are the same as in Example 1.

[0088] Example 6

[0089] This embodiment provides a cleaning agent comprising the following components by mass fraction:

[0090] The ingredients are: 20% nonionic surfactant, 0.4% precipitant, 0.3% hyperbranched polyamide amine, 0.3% defoamer, 5% antifreeze, and the remainder water.

[0091] The nonionic surfactant is APG0810; the defoamer is AFE-7610; and the antifreeze is propylene glycol. The hyperbranched polyamide amine has a molecular weight of 12000 g / mol and a total amine value of 0.06 mol / g. The preparation method of the hyperbranched polyamide amine includes the following steps:

[0092] (1) Methyl acrylate was added to a methanol solution of divinyltriamine and an addition reaction was carried out at 5°C for 10 h; wherein the molar ratio of divinyltriamine to methyl acrylate was 1:2.

[0093] (2) After the reaction is completed, the temperature is raised to 60℃, 100℃, 120℃ and 140℃ in four stages. The first two heating stages are maintained by a water pump and the last two heating stages are maintained by an oil pump. The total reaction time is 20h, and hyperbranched polyamide amine is obtained.

[0094] The preparation method of this cleaning agent includes the following steps:

[0095] Add the prescribed amount of water to the reactor and heat it to about 80°C. Then add the precipitate and stir to disperse and dissolve it. Next, add the hyperbranched polyamide amine and continue stirring to carry out the first mixing. After the first mixing is completed, cool it down to below 50°C and add the nonionic surfactant, defoamer, and antifreeze in sequence. Continue stirring to carry out the second mixing. After mixing evenly, the cleaning agent is obtained.

[0096] Comparative Example 1

[0097] This comparative example provides a cleaning agent, except that the mass fraction of the precipitate is adjusted from 0.5% to 0.05%, while the other raw material types, amounts, and preparation methods are the same as in Example 1.

[0098] Comparative Example 2

[0099] This comparative example provides a cleaning agent, except that the mass fraction of the precipitate is adjusted from 0.5% to 2.5%, while the other raw material types, amounts, and preparation methods are the same as in Example 1.

[0100] Comparative Example 3

[0101] This comparative example provides a cleaning agent that, except for the absence of the superimposed adhesive (i.e., the mass fraction of the superimposed adhesive is 0), uses the same raw materials, amounts, and preparation methods as in Example 1.

[0102] Comparative Example 4

[0103] This comparative example provides a cleaning agent, except that the sorbitol is replaced with an equal amount of cellulose ether, and the other raw material types, amounts, and preparation methods are the same as in Example 1.

[0104] Comparative Example 5

[0105] This comparative example provides a cleaning agent, except that the mass fraction of hyperbranched polyamide amine is adjusted from 0.2% to 0.05%, while the other raw material types, amounts, and preparation methods are the same as in Example 1.

[0106] Comparative Example 6

[0107] This comparative example provides a cleaning agent, except that the mass fraction of hyperbranched polyamide amine is adjusted from 0.2% to 1%, while the other raw material types, amounts, and preparation methods are the same as in Example 1.

[0108] Comparative Example 7

[0109] This comparative example provides a cleaning agent that, except for the absence of hyperbranched polyamide amine (i.e., the mass fraction of hyperbranched polyamide amine is 0), uses the same raw material types, amounts, and preparation methods as in Example 1.

[0110] To compare the technical effects of the various embodiments and comparative examples, the following experimental examples are provided.

[0111] Experimental Example 1

[0112] The infrared characteristic spectra of oil sludge (dirt) on the road surface of each highway toll station were detected using a Fourier transform infrared spectrometer. The results are as follows: Figure 2 As shown.

[0113] The composition of road surface sludge at highway toll station lanes was analyzed by extraction-weighing method, and the specific results are shown in Table 1. The extraction-weighing procedure involved accurately weighing 10g of sample, placing it in 50mL of xylene solution, soaking overnight, and then ultrasonically extracting for 1 hour. Simultaneously, the metal elements in the road surface sludge were determined using an elemental analyzer, and the specific results are shown in Table 2.

[0114] Table 1

[0115] Mass fraction (wt%) 8.2 10.2 81.6

[0116] Table 2

[0117] Mass concentration (mg / kg) 15.22 8.31 0.93 2.05 32.40 3.21 10.21

[0118] Preliminary compositional analysis of road surface debris samples from highway tollbooth lanes revealed that the sludge not only contained large amounts of gravel and clay minerals, but also a high content of mechanically mixed oil components. Furthermore, the sludge contained heavy metals such as barium, lead, copper, zinc, and manganese. These and other chemical substances in the sludge are highly toxic, emit a foul odor, and will pollute the surrounding environment.

[0119] The road surfaces of each highway toll station lane were cleaned using the cleaning agents provided in Examples 1-6 and Comparative Examples 1-7, respectively. The cleaning time for each toll station lane was approximately 10 minutes, with 8 kg of diluted solution used per square meter of road surface (the cleaning agent was diluted 20 times (5%) in the diluted solution). Specific cleaning results are shown in Table 3. It should be noted that the cleaning results are categorized as either "qualified" or "unqualified." "Qualified" means that no obvious oil or mud stains are visible to the naked eye after cleaning, the road surface is undamaged, and there is no obvious flowing wastewater after treatment. "Unqualified" means that residual oil or mud is visible to the naked eye on the road surface.

[0120] Table 3

[0121]

[0122]

[0123] After the above cleaning tests, it was found that all embodiments of the present invention have good cleaning effects. After cleaning, no obvious oil or mud stains were observed by the naked eye, the road surface was not damaged by the naked eye, and there was no obvious flowing wastewater after the treatment. The cleaning results all met the qualified standards. At the same time, the cleaning time using the cleaning agent of the present invention is short, which meets the requirements of rapid construction at highway toll stations. Moreover, the raw material cost of the cleaning agent is reasonable, and long-term use will not cause wear and blockage to the cleaning equipment.

[0124] The cleaning effects of the comparative examples of this invention vary. While Comparative Example 1 achieves a certain cleaning effect, it is time-consuming and does not meet the requirements for rapid construction at highway toll stations. Comparative Examples 2 and 6 also meet the cleaning standards, but their economic efficiency is significantly reduced due to excessive raw material usage. Comparative Examples 3 and 4 fail to meet the cleaning requirements due to a lack of key raw materials. Comparative Examples 5 and 7, due to excessively low or absent hyperbranched polyamide amine content, cannot adequately protect the cleaning equipment (e.g., nozzles), resulting in white residue on nozzles after cleaning. Over time, this will cause wear and blockage of the nozzles, rendering them unusable for extended periods.

[0125] In summary, the cleaning agent provided by this invention has a high cleaning effect, is particularly suitable for efficient and rapid mechanized operations in highway toll station lanes, and is biosafe and environmentally friendly.

[0126] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention shall be within the scope of protection of the pending claims of the present invention.

Claims

1. A cleaning agent for cleaning tollbooth lanes, characterized in that, The components include the following mass fractions: Nonionic surfactant 20-30%, precipitant 0.1-2.0%, hyperbranched polyamide amine 0.1-0.5%, defoamer 0.5-2.0%, antifreeze 0-30%, and the balance being water; The nonionic surfactants include alkyl glycoside surfactants; The hyperbranched polyamide amine has a molecular weight of 8000-13000 g / mol and a total amine value of 0.05-0.09 mol / g. The antifreeze includes one or a combination of at least two of ethylene glycol, propylene glycol, or diethylene glycol; The method of using the cleaning agent for cleaning toll station lanes includes the following steps: injecting the cleaning agent for cleaning toll station lanes into a water jet device for simultaneous dilution, and then spraying it out to clean the dirt on the road surface.

2. The cleaning agent for cleaning toll station lanes according to claim 1, characterized in that, The alkyl glycoside surfactants include one or a combination of at least two of the alkyl glycosides with the brand names APG1214, APG0810, or APG0814.

3. The cleaning agent for cleaning tollbooth lanes according to claim 1 or 2, characterized in that, The defoamer includes one or a combination of at least two of the following brands: Dow Corning AFE-3168, Dow Corning AFE-7610, BASF DF9010F, or Air Chemical DA745.

4. The method for preparing the cleaning agent for cleaning toll station lanes according to any one of claims 1-3, characterized in that, Includes the following steps: The formulated amounts of precipitant, hyperbranched polyamide amine, and water are first mixed, and then the formulated amounts of nonionic surfactant, defoamer, and antifreeze are added for a second mixing to obtain a cleaning agent for cleaning toll station lanes.

5. The method for preparing the cleaning agent for cleaning toll station lanes according to claim 4, characterized in that, Both the first and second mixtures are mixed by stirring. And / or, the temperature of the first mixture is 70-85°C; And / or, the temperature of the second mixture is ≤50℃, and the time of the second mixture is ≥20min.

6. The application of the cleaning agent for cleaning toll station lanes according to any one of claims 1-3 in the cleaning of toll station lanes.

7. The application of the cleaning agent for cleaning toll station lanes according to claim 6 in the cleaning of toll station lanes, characterized in that, The tollbooth lanes include those at highway tollbooths.

Images