CN113293388A - Acidic cleaning agent and application thereof in cleaning of air-conditioning radiating fins of railway motor coaches - Google Patents
Acidic cleaning agent and application thereof in cleaning of air-conditioning radiating fins of railway motor coaches Download PDFInfo
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- CN113293388A CN113293388A CN202110484237.1A CN202110484237A CN113293388A CN 113293388 A CN113293388 A CN 113293388A CN 202110484237 A CN202110484237 A CN 202110484237A CN 113293388 A CN113293388 A CN 113293388A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/12—Light metals
- C23G1/125—Light metals aluminium
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
- C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
- C23G1/061—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors nitrogen-containing compounds
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
- C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
- C23G1/063—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors heterocyclic compounds
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Abstract
The invention discloses an acidic cleaning agent and application thereof in cleaning of air-conditioning radiating fins of railway motor cars, which comprises, by mass, 1.0-5.0% of a cleaning component, 1.0-3.0% of a corrosion and scale inhibition component, 0.2-2.0% of a surface active component, 0.5-1.0% of an auxiliary agent and the balance of water; the cleaning component is inorganic acid and organic acid; the corrosion and scale inhibition component comprises aniline, urotropine and dicarboxylated imidazoline derivatives; the surface active component comprises cationic alkyl glycoside, sodium dodecyl polyoxyethylene ether sulfate and polyalcohol phosphate; the auxiliary agent comprises a dispersant which is polyanionic sodium cellulose. The acidic cleaning agent provided by the invention has the advantages of high efficiency, easiness in rinsing, low residue, high stability and the like in cleaning the air-conditioning radiating fins of the railway motor cars.
Description
Technical Field
The invention belongs to the field of industrial cleaning, and relates to an acid cleaning agent and application thereof in cleaning of air-conditioning radiating fins of railway motor coaches.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
The rapid development of the railway industry in China drives the vigorous operation of national economy, and along with the rapid development, the daily maintenance requirement of railway motor cars is increased day by day. The air conditioner is used as an essential component of the railway motor coach, and after the railway motor coach runs for a period of time, dirt is generated on the aluminum radiating fins contacted with the air due to deposition of impurities in the air and the like. The existence of dirt layer not only influences the outward appearance of motor coach, and the dirt layer can produce great heat transfer resistance, greatly reduced so that lead to the loss of air conditioner heat transfer ability, dirt in the dirt layer still can corrode air conditioner radiating fin even. In order to maintain the normal operation of the air conditioner and prolong the service life of the air conditioner, particularly the radiating fins of the air conditioner, should be cleaned regularly.
According to the research of the inventor, the air conditioner radiating fin cleaning agent on the market is acidic, alkaline and neutral. The acidic cleaning agent has strong cleaning capability but low oil dirt removing capability, is easy to corrode and is not beneficial to protecting the internal parts of the locomotive; the alkaline cleaning agent has slow foaming, low cleaning efficiency, unstable product performance, easy delamination and easy corrosion to the aluminum air conditioner radiating fin; neutral detergents are generally surfactant solutions, which have a strong ability to remove oily soils but a weak ability to remove inorganic soils.
Disclosure of Invention
Through further research of the inventor, the main components of the scale layer of the air conditioner of the motor coach are dust, oil sludge, pollen, tail gas, bacteria and the like. Because the composition and the property of dirt are different, the cleaning agent suitable for the heat radiating fins of the air conditioners of the motor cars has the characteristics of quick penetration capability, high emulsibility and strong solubilization. The moving passenger car generally runs in the daytime and is maintained at night, and the staying time at a motor car place or a motor car section is limited, so that the cleaning operation time of the moving passenger car is short. Therefore, the air conditioner cooling fin cleaning agent is required to have the characteristics of rapid wetting, high efficiency, easy rinsing and the like.
In order to solve the defects of the prior art, the invention aims to provide an acid cleaning agent and application thereof in cleaning of the air-conditioning radiating fins of the railway motor coach.
In order to achieve the purpose, the technical scheme of the invention is as follows:
on one hand, the acidic cleaning agent comprises, by mass, 1.0-5.0% of a cleaning component, 1.0-3.0% of a corrosion and scale inhibition component, 0.2-2.0% of a surface active component, 0.5-1.0% of an auxiliary agent and the balance of water;
the cleaning component is inorganic acid and organic acid;
the corrosion and scale inhibition component comprises aniline, urotropine and dicarboxylated imidazoline derivatives;
the surface active component comprises cationic alkyl glycoside, sodium dodecyl polyoxyethylene ether sulfate and polyalcohol phosphate;
the auxiliary agent comprises a dispersing agent, and the dispersing agent is polyanionic sodium cellulose.
Aiming at the defects that the alkaline cleaning agent for the heat radiating fins of the conventional air-conditioning of the passenger car is unstable and has poor capability of corroding the heat radiating fins and removing scale layers by a neutral cleaning agent, the alkaline cleaning agent for the heat radiating fins of the air-conditioning of the passenger car adopts inorganic acid and organic acid as cleaning components to improve the capability of removing scale, and in order to solve the problem that an acid solution corrodes internal parts of the passenger car, the alkaline cleaning agent for the heat radiating fins of the air-conditioning of the passenger car adopts compounded aniline, urotropine and dicarboxylimidazoline derivative organic corrosion inhibitor to reduce the corrosivity of the cleaning agent.
However, due to the fact that the stability and the dispersibility of the cleaning agent are not high after the aniline, the urotropine and the dicarboxylated imidazoline derivatives are added, the cleaning performance of the acidic cleaning agent is poor, for the reason, the cationic alkyl glycoside is adopted to compound the sodium dodecyl polyoxyethylene ether sulfate and the polyalcohol phosphate to improve the stability, and meanwhile, the polyanionic sodium cellulose is added to serve as a dispersing agent, so that the cleaning performance is effectively improved, the using amount of the cleaning agent is reduced, and the capability of efficiently removing dirt of the heat dissipation fins of the air conditioners of the railway passenger cars is achieved. In addition, the added cationic alkyl glycoside, sodium dodecyl polyoxyethylene ether sulfate, polyalcohol phosphate and polyanionic sodium cellulose are easy to degrade and environment-friendly.
On the other hand, the preparation method of the acidic cleaning agent comprises the steps of adding water into the cleaning component, the corrosion and scale inhibition component and the surface active component, uniformly mixing, then adding the auxiliary agent, supplementing water and uniformly stirring to obtain the acidic cleaning agent.
In a third aspect, the acidic cleaning agent is applied to cleaning of the air-conditioning radiating fins of the railway motor cars.
And fourthly, diluting the acidic cleaning agent, spraying the diluted acidic cleaning agent to the air-conditioning radiating fin of the railway motor coach for cleaning, and washing or drying after waiting for a set time.
The invention has the beneficial effects that:
1. the acidic cleaning agent provided by the invention has the advantages that the dirt removing capability is improved by inorganic acid and organic acid, the stability is improved by adopting the environment-friendly surfactant cationic alkyl glycoside to compound sodium dodecyl polyoxyethylene ether sulfate and polyalcohol phosphate, the corrosivity of the acidic cleaning agent is reduced by adopting compound aniline, urotropine and dicarboxylimidazoline derivative organic corrosion inhibitor, the polyanion sodium cellulose is added as a dispersing agent, the cleaning performance is effectively improved, the use amount of the acidic cleaning agent is reduced (the dilution ratio can stably reach 1:15 and can maximally reach 1:20, the dilution ratio of commercially available radiating fins is generally 1:5-1:10), and the capability of efficiently removing the dirt of the radiating fins of the air conditioner of the railway motor coach is achieved.
2. The acidic cleaning agent provided by the invention has the characteristics of small dosage, short time and good cleaning effect; the acid cleaning agent provided by the invention has the advantages of simple preparation method, wide raw material source, less investment, low cost, less residues (the cleaning agent automatically flows down after cleaning, the sample amount of the cleaning agent attached to the surface of the air-conditioning radiating fin is very small), easy rinsing (only a small amount of water is needed for rinsing after cleaning, namely the cleaning agent can be completely separated from the surface of the air-conditioning radiating fin by short-time rinsing), no layering after long-term storage (the cleaning agent is still uniform, stable, non-layering and non-precipitating when being placed for 90 days at the temperature of 0-40 ℃), good hard water resistance (when the product is prepared by replacing pure water with hard water with calcium carbonate with the hardness of less than 450mg/L, the acid cleaning agent can still keep uniform and consistent appearance, does not delaminate, is not turbid, has no floccule and has no obvious change in use property), has no corrosion to the air-conditioning radiating fin, and the used surfactant is easy to biodegrade, no pollution to environment.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In view of the defects that the prior alkaline cleaning agent for the radiating fins of the air conditioners of the motor coaches is unstable and corrodes the radiating fins, and the scale removing capability of the neutral cleaning agent is poor, the invention provides the acidic cleaning agent and the application thereof in the cleaning of the radiating fins of the air conditioners of the motor coaches.
The invention provides an acidic cleaning agent, which comprises, by mass, 1.0-5.0% of a cleaning component, 1.0-3.0% of a corrosion and scale inhibition component, 0.2-2.0% of a surface active component, 0.5-1.0% of an auxiliary agent and the balance of water;
the cleaning component is inorganic acid and organic acid;
the corrosion and scale inhibition component comprises aniline, urotropine and dicarboxylated imidazoline derivatives;
the surface active component comprises cationic alkyl glycoside, sodium dodecyl polyoxyethylene ether sulfate and polyalcohol phosphate;
the auxiliary agent comprises a dispersing agent, and the dispersing agent is polyanionic sodium cellulose.
Aiming at the defects that the alkaline cleaning agent for the heat radiating fins of the conventional air-conditioning of the passenger car is unstable and has poor capability of corroding the heat radiating fins and removing scale layers by a neutral cleaning agent, the alkaline cleaning agent for the heat radiating fins of the air-conditioning of the passenger car adopts inorganic acid and organic acid as cleaning components to improve the capability of removing scale, and in order to solve the problem that an acid solution corrodes internal parts of the passenger car, the alkaline cleaning agent for the heat radiating fins of the air-conditioning of the passenger car adopts compounded aniline, urotropine and dicarboxylimidazoline derivative organic corrosion inhibitor to reduce the corrosivity of the cleaning agent.
However, due to the fact that the stability and the dispersibility of the cleaning agent are not high after the aniline, the urotropine and the dicarboxylated imidazoline derivatives are added, the cleaning performance of the acidic cleaning agent is poor, for the reason, the cationic alkyl glycoside is adopted to compound the sodium dodecyl polyoxyethylene ether sulfate and the polyalcohol phosphate to improve the stability, and meanwhile, the polyanionic sodium cellulose is added to serve as a dispersing agent, so that the cleaning performance is effectively improved, the using amount of the cleaning agent is reduced, and the capability of efficiently removing dirt of the heat dissipation fins of the air conditioners of the railway passenger cars is achieved. In addition, the added cationic alkyl glycoside, sodium dodecyl polyoxyethylene ether sulfate, polyalcohol phosphate and polyanionic sodium cellulose are easy to degrade and environment-friendly.
In some examples of this embodiment, the cleaning component comprises nitric acid, citric acid, and oxalic acid. The selection of the inorganic acid and the organic acid is more beneficial to cleaning of dust, oil sludge, pollen, tail gas and bacteria, so that the cleaning agent is suitable for cleaning the air-conditioning radiating fin of the railway motor coach. In one or more embodiments, the mass ratio of the nitric acid, the citric acid and the oxalic acid is 0.5-3.0: 0.25-1.0. With the proportion, the cleaning effect on dust, oil sludge, pollen, tail gas and bacteria is better.
In some examples of this embodiment, the mass ratio of aniline, urotropin, and dicarboxylimidazoline derivative is 0.5-1.0: 0.25-1.0. Under this ratio, the effect of reducing the corrosivity of the acid solution to the internal parts and the radiating fins of the locomotive is better.
In some examples of this embodiment, the mass ratio of the cationic alkyl glycoside, sodium laureth sulfate, and the polyol phosphate is 0.1-1.0: 0.05-0.5. Under the proportion, the stability of the acidic cleaning agent is improved better.
In some examples of the embodiment, the addition amount of the polyanionic sodium cellulose is 0.2-0.5% of the mass of the acidic cleaning agent.
In some embodiments of this embodiment, the adjuvant comprises an osmotic agent T or an osmotic agent JFC. The penetrant T or the penetrant JFC is beneficial to acidic cleaning agents to enter the interior of dirt of the air-conditioning radiating fins of the motor coach, so that the cleaning effect is improved. In one or more embodiments, the addition amount of the penetrating agent T or the penetrating agent JFC is 0.2-0.3% of the mass of the acid cleaning agent. The dispersion performance under this condition is better.
Some embodiments of this embodiment include an antifoaming agent that is a polyoxyethylene polyoxypropylene pentaerythritol ether. In one or more embodiments, the addition amount of the defoaming agent is 0.1-0.2% of the mass of the acidic cleaning agent.
In another embodiment of the invention, a preparation method of the acidic cleaning agent is provided, and the acidic cleaning agent is obtained by adding water to the cleaning component, the corrosion and scale inhibition component and the surface active component, uniformly mixing, then adding the auxiliary agent, supplementing water and uniformly stirring.
In some examples of this embodiment, the cleaning component, the corrosion and scale inhibiting component, and the surface active component are mixed after being separately added with water to form solutions.
The third embodiment of the invention provides an application of the acid cleaning agent in cleaning of the air-conditioning radiating fins of the railway motor coach.
The invention provides a method for cleaning the air-conditioning radiating fins of the railway motor coach, which comprises the steps of diluting the acidic cleaning agent, spraying the diluted acidic cleaning agent to the air-conditioning radiating fins of the railway motor coach for cleaning, and washing or drying after waiting for a set time.
In some examples of the embodiment, the heat radiating fins of the air conditioner of the railway motor coach are pre-cleaned by water and then cleaned by diluted acid cleaning agent. The time of the pre-cleaning is 10-20 s. And the time for cleaning by using the diluted acid cleaning agent is 5-10 s.
In some examples of this embodiment, the volume ratio of the acidic cleaning agent to water during the dilution process is 1: 5-15.
In some examples of this embodiment, the set time is 2-3 min.
The preferred cleaning method of the invention is as follows: and mixing the acidic cleaning agent and water according to the volume ratio of 1:5-1: 15 to obtain the working solution of the cleaning agent. Spraying clear water on the heat radiating fins of the air conditioner of the motor coach for 10-20 s, then spraying and cleaning the diluted cleaning agent for 5-10 s, and waiting for 2-3 min to enable the cleaning agent to fully permeate, wet and emulsify dirt on the heat radiating fins of the air conditioner of the motor coach; and finally, spraying water to rinse the fabric or blowing the fabric clean by steam.
In order to make the technical solutions of the present invention more clearly understood by those skilled in the art, the technical solutions of the present invention will be described in detail below with reference to specific embodiments.
Example 1:
(1) preparation of acidic cleaning agent
The cleaning agent suitable for the heat radiating fins of the air conditioners of the motor cars comprises 1.0 percent of cleaning component, 1.0 percent of corrosion and scale inhibition component, 0.2 percent of surface active component, 0.2 percent of other auxiliary agents, 0.2 percent of dispersing agent, 0.2 percent of penetrating agent, 0.1 percent of defoaming agent and 97.3 percent of water by weight.
The cleaning components in the embodiment comprise nitric acid, citric acid and oxalic acid, the total weight fraction is 1.0%, and the weight ratio is 2:1: 1; the corrosion and scale inhibition component comprises urotropine, aniline and dicarboxylated imidazoline derivatives, the total weight percentage is 1.0%, and the weight ratio is 2:1: 1; the surface active component comprises cationic alkyl glycoside, sodium dodecyl polyoxyethylene ether sulfate and polyhydric alcohol phosphate, the total weight fraction is 0.2%, and the weight ratio is 2:1: 1; other auxiliary agents are polyanionic sodium cellulose serving as a dispersant, and the weight percentage is 0.2 percent; 0.2 percent of penetrant T; 0.1 percent of defoaming agent polyoxyethylene polyoxypropylene pentaerythritol ether; another 97.3% of the composition was water.
Respectively dissolving the cleaning component, the corrosion and scale inhibition component and the surface active component in a proper amount of water at a stirring speed of 80rpm, then mixing, sequentially adding the dispersing agent polyanion sodium cellulose, the penetrating agent T and the defoaming agent polyoxyethylene polyoxypropylene pentaerythritol ether after uniformly stirring, and supplementing water after uniformly stirring to obtain the acidic cleaning agent.
(2) Use of acidic cleaners
And (3) diluting the acidic cleaning agent with water, wherein the dilution ratio is 1:5, namely, 5 volumes of water are added into each volume of the acidic cleaning agent to obtain the working solution of the cleaning agent.
When the cleaning agent is used, the shell of the motor coach is firstly sprayed with clean water for 20s, then the working solution of the cleaning agent is sprayed and cleaned for 10s, and the time is 3min, so that the cleaning agent fully permeates, wets and emulsifies dirt on the heat dissipation fins of the air conditioner of the motor coach; finally, spraying water, rinsing and cleaning.
Example 2:
(1) preparation of acidic cleaning agent
The cleaning agent suitable for the heat radiating fins of the air conditioners of the motor cars comprises, by weight, 2.0% of a cleaning component, 1.5% of a corrosion and scale inhibition component, 0.4% of a surface active component, 0.4% of other auxiliary agents, 0.2% of a dispersing agent, 0.1% of a penetrating agent, and 95.4% of water.
The cleaning components in the embodiment comprise nitric acid, citric acid and oxalic acid, the total weight fraction is 2.0%, and the weight ratio is 2:1: 1; the corrosion and scale inhibition component comprises urotropine, aniline and dicarboxylated imidazoline derivatives, the total weight percentage is 1.5%, and the weight ratio is 1:1: 1; the surface active component comprises cationic alkyl glycoside, lauryl polyoxyethylene ether sodium sulfate and polyalcohol phosphate, the total weight fraction is 0.4%, and the weight ratio is 2:1: 1; other auxiliary agents are polyanionic sodium cellulose serving as a dispersant, and the weight percentage is 0.4 percent; 0.2 percent of penetrant T; 0.1 percent of defoaming agent polyoxyethylene polyoxypropylene pentaerythritol ether; the other 95.4% of the composition was water.
Respectively dissolving the cleaning component, the corrosion and scale inhibition component and the surface active component in a proper amount of water at a stirring speed of 80rpm, then mixing, sequentially adding the dispersing agent polyanion sodium cellulose, the penetrating agent T and the defoaming agent polyoxyethylene polyoxypropylene pentaerythritol ether after uniformly stirring, and supplementing water after uniformly stirring to obtain the acidic cleaning agent.
(2) Use of acidic cleaners
And (3) diluting the acidic cleaning agent with water, wherein the dilution ratio is 1:8, namely, 8 volumes of water are added into each volume of the acidic cleaning agent to obtain the working solution of the cleaning agent.
When the cleaning agent is used, the shell of the motor coach is firstly sprayed with clear water for 15s, then the working solution of the cleaning agent is sprayed and cleaned for 10s, and the time is 2min, so that the cleaning agent fully permeates, wets and emulsifies dirt on the heat dissipation fins of the air conditioner of the motor coach; finally, spraying water, rinsing and cleaning.
Example 3:
(1) preparation of acidic cleaning agent
The cleaning agent suitable for the heat radiating fins of the air conditioners of the motor cars comprises 3.5 percent of cleaning component, 2.5 percent of corrosion and scale inhibition component, 0.9 percent of surface active component, 0.5 percent of other auxiliary agent, 0.2 percent of penetrating agent, 0.2 percent of defoaming agent and 92.2 percent of water by weight.
The cleaning components in the embodiment comprise nitric acid, citric acid and oxalic acid, the total weight fraction is 3.5%, and the weight ratio is 4:2: 1; the corrosion and scale inhibition component comprises urotropine, aniline and dicarboxylated imidazoline derivatives, the total weight percentage is 2.5%, and the weight ratio is 2:2: 1; the surface active component comprises cationic alkyl glycoside, sodium dodecyl polyoxyethylene ether sulfate and polyhydric alcohol phosphate, the total weight fraction is 0.9%, and the weight ratio is 5:2: 2; other auxiliary agents are polyanionic sodium cellulose serving as a dispersant, and the weight percentage is 0.5 percent; 0.2 percent of penetrant T; 0.2 percent of defoaming agent polyoxyethylene polyoxypropylene pentaerythritol ether; another 92.2% of the composition was water.
Respectively dissolving the cleaning component, the corrosion and scale inhibition component and the surface active component in a proper amount of water at a stirring speed of 100rpm, then mixing, sequentially adding the dispersing agent polyanion sodium cellulose, the penetrating agent T and the defoaming agent polyoxyethylene polyoxypropylene pentaerythritol ether after uniformly stirring, and supplementing water after uniformly stirring to obtain the acidic cleaning agent.
(2) Use of acidic cleaners
Diluting the acidic cleaning agent with water, wherein the dilution ratio is 1:10, namely, 10 volumes of water are added into each volume of the acidic cleaning agent to obtain the working solution of the cleaning agent.
When the cleaning agent is used, the shell of the motor coach is firstly sprayed with clear water for 15s, then the working solution of the cleaning agent is sprayed and cleaned for 10s, and the time is 3min, so that the cleaning agent fully permeates, wets and emulsifies dirt on the heat dissipation fins of the air conditioner of the motor coach; and finally, cleaning the mixture by using high-pressure steam water.
Example 4:
(1) preparation of acidic cleaning agent
The cleaning agent suitable for the heat radiating fins of the air conditioners of the motor cars comprises, by weight, 5.0% of a cleaning component, 3.0% of a corrosion and scale inhibition component, 1.6% of a surface active component, 0.5% of a dispersing agent, 0.3% of a penetrating agent, 0.2% of a defoaming agent and 89.4% of water.
The cleaning components in the embodiment comprise nitric acid, citric acid and oxalic acid, the total weight fraction is 5.0%, and the weight ratio is 3:1: 1; the corrosion and scale inhibition component comprises urotropine, aniline and dicarboxylated imidazoline derivatives, the total weight percentage is 3.0%, and the weight ratio is 1:1: 1; the surface active component comprises cationic alkyl glycoside, sodium dodecyl polyoxyethylene ether sulfate and polyhydric alcohol phosphate ester, the total weight fraction is 1.6%, and the weight ratio is 10:3: 3; other auxiliary agents are polyanionic sodium cellulose serving as a dispersant, and the weight percentage is 0.5 percent; 0.3 percent of penetrant T; 0.2 percent of defoaming agent polyoxyethylene polyoxypropylene pentaerythritol ether; another 89.4% of the components was water.
Respectively dissolving the cleaning component, the corrosion and scale inhibition component and the surface active component in a proper amount of water at a stirring speed of 100rpm, then mixing, sequentially adding the dispersing agent polyanion sodium cellulose, the penetrating agent T and the defoaming agent polyoxyethylene polyoxypropylene pentaerythritol ether after uniformly stirring, and supplementing water after uniformly stirring to obtain the acidic cleaning agent.
(2) Use of acidic cleaners
Diluting the acidic cleaning agent with water, wherein the dilution ratio is 1:12, namely, adding 12 volumes of water into each volume of acidic cleaning agent to obtain the working solution of the cleaning agent.
When the cleaning agent is used, the shell of the motor coach is firstly sprayed with clear water for 15s, then the working solution of the cleaning agent is sprayed and cleaned for 10s, and the time is 2min, so that the cleaning agent fully permeates, wets and emulsifies dirt on the heat dissipation fins of the air conditioner of the motor coach; finally, spraying water, rinsing and cleaning.
Example 5:
(1) preparation of acidic cleaning agent
The cleaning agent suitable for the heat radiating fins of the air conditioners of the motor cars comprises, by weight, 5.0% of a cleaning component, 3.0% of a corrosion and scale inhibition component, 2.0% of a surface active component, 0.5% of other auxiliary agents, 0.3% of a penetrating agent, 0.2% of a defoaming agent and 89.0% of water.
The cleaning components in the embodiment comprise nitric acid, citric acid and oxalic acid, the total weight fraction is 5.0%, and the weight ratio is 3:1: 1; the corrosion and scale inhibition component comprises urotropine, aniline and dicarboxylated imidazoline derivatives, the total weight percentage is 3.0%, and the weight ratio is 1:1: 1; the surface active component comprises cationic alkyl glycoside, sodium dodecyl polyoxyethylene ether sulfate and polyhydric alcohol phosphate, the total weight fraction is 2.0%, and the weight ratio is 2:1: 1; other auxiliary agents are polyanionic sodium cellulose serving as a dispersant, and the weight percentage is 0.5 percent; 0.3 percent of penetrant T; 0.2 percent of defoaming agent polyoxyethylene polyoxypropylene pentaerythritol ether; another 89.0% component was water.
Respectively dissolving the cleaning component, the corrosion and scale inhibition component and the surface active component in a proper amount of water at a stirring speed of 120rpm, then mixing, sequentially adding the dispersing agent polyanion sodium cellulose, the penetrating agent T and the defoaming agent polyoxyethylene polyoxypropylene pentaerythritol ether after uniformly stirring, and supplementing water after uniformly stirring to obtain the acidic cleaning agent.
(2) Use of acidic cleaners
Diluting the acidic cleaning agent with water, wherein the dilution ratio is 1:15, namely, 15 volumes of water are added into each volume of the acidic cleaning agent to obtain the working solution of the cleaning agent.
When the cleaning agent is used, firstly, the shell of the motor coach is sprayed with clear water for 10s, then, the working solution of the cleaning agent is sprayed for cleaning for 5s, and the time is 2min, so that the cleaning agent fully permeates, wets and emulsifies dirt on the heat dissipation fins of the air conditioner of the motor coach; and finally, cleaning the mixture by using high-pressure steam water.
Example 6:
(1) preparation of acidic cleaning agent
The cleaning agent suitable for the heat radiating fins of the air conditioners of the motor cars comprises, by weight, 5.0% of a cleaning component, 3.0% of a corrosion and scale inhibition component, 2.0% of a surface active component, 0.5% of other auxiliary agents, 0.3% of a penetrating agent, 0.2% of a defoaming agent and 89.0% of water.
The cleaning components in the embodiment comprise nitric acid, citric acid and oxalic acid, the total weight fraction is 5.0%, and the weight ratio is 3:1: 1; the corrosion and scale inhibition component comprises urotropine, aniline and dicarboxylated imidazoline derivatives, the total weight percentage is 3.0%, and the weight ratio is 1:1: 1; the surface active component comprises cationic alkyl glycoside, sodium dodecyl polyoxyethylene ether sulfate and polyhydric alcohol phosphate, the total weight fraction is 2.0%, and the weight ratio is 2:1: 1; other auxiliary agents are polyanionic sodium cellulose serving as a dispersant, and the weight percentage is 0.5 percent; penetrating agent JFC, weight fraction 0.3%; 0.2 percent of defoaming agent polyoxyethylene polyoxypropylene pentaerythritol ether; another 89.0% component was water.
Respectively dissolving the cleaning component, the corrosion and scale inhibition component and the surface active component in a proper amount of water at a stirring speed of 120rpm, then mixing, sequentially adding the dispersing agent polyanion sodium cellulose, the penetrating agent T and the defoaming agent polyoxyethylene polyoxypropylene pentaerythritol ether after uniformly stirring, and supplementing water after uniformly stirring to obtain the acidic cleaning agent.
(2) Use of acidic cleaners
Diluting the acidic cleaning agent with water, wherein the dilution ratio is 1:15, namely, 15 volumes of water are added into each volume of the acidic cleaning agent to obtain the working solution of the cleaning agent.
When the cleaning agent is used, firstly, the shell of the motor coach is sprayed with clear water for 10s, then, the working solution of the cleaning agent is sprayed for cleaning for 5s, and the time is 2min, so that the cleaning agent fully permeates, wets and emulsifies dirt on the heat dissipation fins of the air conditioner of the motor coach; finally, spraying water for rinsing.
After the acid cleaning agent of the above embodiment is cleaned, the cleaning agent automatically flows down, and the amount of the cleaning agent sample attached to the surface of the air conditioner heat sink is very small. And after cleaning, the cleaning agent can be completely separated from the surface of the air conditioner radiating fin only by rinsing with a small amount of water, namely rinsing for a short time.
The acidic cleaning agent of the above embodiment is still uniform and stable, does not delaminate and has no precipitate when being placed for 90 days at the temperature of 0-40 ℃.
When the water in the acid cleaning agent of the above embodiment is replaced by hard water with the calcium carbonate hardness of less than 450mg/L, the appearance can be kept uniform, the delamination and the turbidity can be avoided, the floccule can be avoided, and the use property can not be obviously changed.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An acidic cleaning agent is characterized by comprising, by mass, 1.0-5.0% of a cleaning component, 1.0-3.0% of a corrosion and scale inhibition component, 0.2-2.0% of a surface active component, 0.5-1.0% of an auxiliary agent and the balance of water;
the cleaning component is inorganic acid and organic acid;
the corrosion and scale inhibition component comprises aniline, urotropine and dicarboxylated imidazoline derivatives;
the surface active component comprises cationic alkyl glycoside, sodium dodecyl polyoxyethylene ether sulfate and polyalcohol phosphate;
the auxiliary agent comprises a dispersing agent, and the dispersing agent is polyanionic sodium cellulose.
2. An acidic cleaning formulation as claimed in claim 1 wherein said cleaning components include nitric acid, citric acid and oxalic acid; preferably, the mass ratio of the nitric acid to the citric acid to the oxalic acid is 0.5-3.0: 0.25-1.0.
3. The acidic cleaning agent according to claim 1, wherein the mass ratio of aniline, urotropin and dicarboxylimidazoline derivative is 0.5 to 1.0:0.25 to 1.0;
or the mass ratio of the cationic alkyl glycoside to the sodium dodecyl polyoxyethylene ether sulfate to the polyol phosphate is 0.1-1.0: 0.05-0.5;
or the addition amount of the polyanionic sodium cellulose is 0.2-0.5% of the mass of the acidic cleaning agent.
4. An acidic cleaning agent according to claim 1, wherein the auxiliary agent comprises penetrant T or penetrant JFC; preferably, the addition amount of the penetrating agent T or the penetrating agent JFC is 0.2-0.3% of the mass of the acid cleaning agent.
5. The acidic cleaning agent according to claim 1, comprising an antifoaming agent, wherein the antifoaming agent is polyoxyethylene polyoxypropylene pentaerythritol ether; preferably, the addition amount of the defoaming agent is 0.1-0.2% of the mass of the acid cleaning agent.
6. A preparation method of the acidic cleaning agent as claimed in any one of claims 1 to 5, characterized in that the cleaning component, the corrosion and scale inhibition component and the surface active component are mixed with water uniformly, then the auxiliary agent is added, the water is replenished and the mixture is stirred uniformly, thus obtaining the acidic cleaning agent.
7. The method for preparing an acidic cleaning agent as claimed in claim 6, wherein the cleaning component, the corrosion and scale inhibiting component and the surface active component are mixed after being added with water to prepare solutions.
8. An application of the acidic cleaning agent as claimed in any one of claims 1 to 5 in cleaning of air-conditioning radiating fins of railway motor coaches.
9. A method for cleaning air-conditioning radiating fins of a railway motor coach is characterized in that the acidic cleaning agent as claimed in any one of claims 1 to 5 is diluted, the diluted acidic cleaning agent is sprayed to the air-conditioning radiating fins of the railway motor coach for cleaning, and after the cleaning is carried out for a set time, the air-conditioning radiating fins of the railway motor coach are washed with water or dried by blowing.
10. The method for cleaning the air-conditioning radiating fin of the railway motor coach as claimed in claim 9, wherein the air-conditioning radiating fin of the railway motor coach is pre-cleaned by water and then cleaned by diluted acid cleaning agent;
or in the dilution process, the volume ratio of the acidic cleaning agent to water is 1: 5-15;
or, the setting time is 2-3 min.
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