CN110964603A - Low-foam environment-friendly bus outer skin cleaning agent - Google Patents

Abstract

The invention discloses a low-foam environment-friendly bus outer skin cleaning agent, and belongs to the field of cleaning. Comprises the following components in weight percentage: lauroyl methyl glucamide, fatty alcohol polyoxypropylene polyoxyethylene ether, alkyl ammonium sulfate, citric acid, sodium citrate, sodium carbonate, sodium silicate, Arabic gum, oxygen-containing bleaching agent, lipase, amylase, methyl silicone oil and deionized water. The invention takes the degradable, low-foam and environment-friendly surfactants such as lauroyl methyl glucamide, fatty alcohol polyoxypropylene polyoxyethylene ether, alkyl ammonium sulfate and the like as main raw materials, and can obviously reduce the surface tension through methyl silicone oil, so as to eliminate foam in the solution. The problem of current bus wash in, use the condition of sanitizer, have a large amount of foams in the water jet, reduce injection pressure, and make the cleaning efficiency reduce is solved.

Description

Low-foam environment-friendly bus outer skin cleaning agent

Technical Field

The invention belongs to the field of cleaning, and particularly relates to a low-foam environment-friendly bus outer skin cleaning agent.

Background

During the driving process of the bus, the main pollutants on the outer surface of the bus comprise: 1. due to the friction between the vehicle body and air, airflow is separated, negative pressure is formed, and a large amount of dust, clay, scrap iron, carbon powder and the like are physically adhered to the outer surface of the vehicle body due to mechanical force, electrostatic action and the like; 2. firstly, feces of animals such as birds or insects, and secondly, various organic matters such as protein and other oil and fat organic stains are remained on the outer surface of the vehicle body due to human factors, and are chemically adhered to the outer surface of the vehicle body through hydrogen bonding to form the vehicle body dirt. The accumulation of dirt can not only affect the aesthetic appearance of the bus, but also can cause the reduction of the glossiness and the hardness of a paint film, thereby reducing the protective effect of the paint film on the body structure of the bus and causing the corrosion of the external skin of the bus.

The existing bus is mainly completed by means of the spraying effect of strong water flow in a three-dimensional space in the washing process. The cleaning agent can effectively remove most of physically adsorbed stains, but the removal effect on chemically adsorbed stains is poor, so that a small amount of cleaning agent is added into water flow in some automobile cleaning plants to remove chemically adsorbed stains by a surface chemical method, but the effect is poorer in actual operation, because the existing cleaning agent can generate a large amount of bubbles in the washing and spraying processes, and if foam is contained in the water flow, the spraying pressure is greatly reduced, so that the cleaning efficiency is reduced, and excessive foam is left on a vehicle to form new stains, so that the decontamination effect is influenced.

Disclosure of Invention

The purpose of the invention is as follows: provides a low-foam environment-friendly bus outer skin cleaning agent to solve the problems related in the background technology.

The technical scheme is as follows: a low-foam environment-friendly bus outer skin cleaning agent comprises the following components in percentage by weight: 2-5 parts of lauroyl methyl glucamide; 0.5-1.5 parts of fatty alcohol-polyoxypropylene polyoxyethylene ether; 0.5-1.5 parts of alkyl ammonium sulfate; 0-1 part of citric acid; 8-15 parts of sodium citrate; 5-10 parts of sodium carbonate; 5-10 parts of sodium silicate; 0.5-1.5 parts of Arabic gum; 0.5-1.5 parts of oxygen-containing bleaching agent; 0-0.5 parts of lipase; 0-0.5 parts of amylase; 0.4-1 part of methyl silicone oil; 51-77.6 parts of deionized water.

As a preferable scheme, the emulsion comprises the following components in percentage by weight: comprises the following components: 2.5 parts of lauroyl methyl glucamide; 0.8 part of fatty alcohol polyoxypropylene polyoxyethylene ether; 0.8 part of alkyl ammonium sulfate; 0.6 part of citric acid; 10 parts of sodium citrate; 6 parts of sodium carbonate; 6 parts of sodium silicate; 1 part of Arabic gum; 1 part of oxygen-containing bleaching agent; 0.4 part of lipase; 0.4 part of amylase; 0.5 part of methyl silicone oil; and 70 parts of deionized water.

As a preferred embodiment, the formula of the lauroyl methylglucamide is:

wherein m is between 8 and 12, and R is aliphatic hydrocarbon.

As a preferable scheme, the fatty alcohol polyoxypropylene polyoxyethylene ether is characterized in that the structural formula of the fatty alcohol polyoxypropylene polyoxyethylene ether is as follows:

wherein m is between 2 and 8, n is between 2 and 8, and R is aliphatic hydrocarbon.

As a preferred embodiment, the alkyl amine sulfate has the structural formula:

wherein R is aliphatic hydrocarbon, and the number of carbon atoms in the aliphatic hydrocarbon is 12-18.

As a preferred embodiment, the methyl silicone oil is polydimethylsiloxane: the structural formula is as follows:

wherein n is 5000-10000.

As a preferable scheme, the oxygen-containing bleaching agent is one of tetraacetylethylenediamine, sodium percarbonate and chlorine dioxide.

On the other hand, the compounding method of the low-foam environment-friendly bus outer skin cleaning agent comprises the following compounding steps:

s1, weighing deionized water according to a ratio, evenly dividing the deionized water into two parts for later use, adding lauroyl methyl glucamide, fatty alcohol polyoxypropylene polyoxyethylene ether and alkyl ammonium sulfate according to the ratio, uniformly mixing, stirring at a rotating speed of 200-300 rad/min, heating to 40-50 ℃, and slowly adding one part of deionized water into the mixed solution during stirring to obtain a solution A;

s2, weighing methyl silicone oil according to the proportion, stirring at a rotating speed of 200-300 rad/min, and slowly adding the melt A into the methyl silicone oil to obtain a solution B;

s3, dissolving sodium citrate, sodium carbonate, sodium silicate, amylase, lipase and oxygen-containing bleaching agent in another part of deionized water according to the proportion and the dosage to obtain a solution C;

and S4, slowly adding the solution C into the solution B while stirring at the temperature of 30-40 ℃, then adding Arabic gum, adjusting the viscosity, cooling to room temperature, adding citric acid, and adjusting the pH value to be neutral to obtain the target product.

Has the advantages that: the invention relates to a low-foam environment-friendly bus outer skin cleaning agent, which uses degradable low-foam environment-friendly surfactants such as lauroyl methyl glucamide, fatty alcohol polyoxypropylene polyoxyethylene ether, alkyl ammonium sulfate and the like as main raw materials, then selects sodium citrate, sodium carbonate and sodium silicate as auxiliary agents, has synergistic effect with the surfactants, can reduce the dosage of the surfactants, can improve the cleaning and decontamination capability of the cleaning agent, and can be used together with Ca²⁺、Mg²⁺Chelating and forming a dissolved state, and preventing the formation of insoluble salt precipitates such as calcium, magnesium and the like. The enzyme preparation is used as an auxiliary agent, so that the decontamination and oil removal effects of the biosurfactant are improved; the methyl silicone oil can obviously reduce the surface tension and is used for eliminating foam in a solution. The problem of current bus wash in, use the condition of sanitizer, have a large amount of foams in the water jet, reduce injection pressure, and make the cleaning efficiency reduce is solved.

Detailed Description

First, it should be noted that the amount of foam is not directly related to the quality of the washing effect, the amount of foam is not good enough to show the washing effect, and the foaming power of the nonionic surfactant is far inferior to that of soap, but the detergency is much better than that of soap. In certain aspects, however, the foam has some secondary effect on soil removal, such as: when washing dishes, the foam can take away the oil drops; when the carpet is scrubbed, the foam is helpful for taking away solid dirt such as dust, powder and the like; and washing products such as toothpaste, bath foam, hand-washing tableware detergent and the like which are commonly used in families have rich and fine foams, and can bring comfortable and pleasant experience to people. The existing bus is mainly completed by means of the spraying effect of strong water flow in a three-dimensional space in the washing process. When the cleaning agent generates a large amount of bubbles in the washing, stirring and spraying processes, if the foam is contained in the water jet, the spraying pressure is greatly reduced to reduce the cleaning efficiency, excessive foam is left on a vehicle, a large amount of clean water is needed for cleaning, and otherwise, new stains are formed to influence the decontamination effect.

In order to solve the technical problem, the bus cleaning at least meets the following design requirements: 1. the detergent has defoaming effect, and can inhibit foam caused by washing, stirring and spraying processes, so as to keep the pressure of washing water strong. 2. The sodium tripolyphosphate anti-pollution agent is safe and environment-friendly, cannot affect human health, is easy to degrade, has small harm to the environment, is preferably low-phosphorus and non-phosphorization, is a product, and reduces the problem of eutrophication caused by the large use of sodium tripolyphosphate. 3. The solubility is good, and the water-soluble polymer can be mutually dissolved with water in any proportion, does not delaminate and has good uniformity; 4. good emulsifying detergency, and can effectively remove chemically adsorbed stains on the outer surface of the car body. 5. The hard water resistance is good, and the good cleaning effect is ensured under any water quality. 6. The outer skin of the car body is not damaged.

The invention adopts surfactants such as lauroyl methyl glucamide, fatty alcohol polyoxypropylene polyoxyethylene ether, alkyl ammonium sulfate and the like as main raw materials, the degradation rate of the surfactant under natural conditions can reach 98 percent, and the surfactant has little pollution to the environment; at the same time, the lauroyl methyl glucose acyl is causedAmine and fatty alcohol polyoxypropylene polyoxyethylene ether are both nonionic surface active, the foaming effect of the surfactant is far inferior to that of an ionic surfactant, and in addition, the length of a carbon chain of alkyl ammonium sulfate serving as the surfactant is controlled, so that the hydrophilic-lipophilic balance value of the surfactant is ensured to be about 13, and the foaming effect of the surfactant can be further inhibited. Then sodium citrate is selected as an auxiliary agent, which is anionic surface active and can generate synergistic action with a nonionic surfactant, the dosage of the surfactant can be reduced, and the cleaning and dirt-removing capacity of the cleaning agent can be improved, but because the chelating action is poor, the sodium citrate can be improved to be combined with Ca by sodium carbonate and sodium silicate^{2 +}、Mg²⁺Chelating ability, forming a dissolved state, and preventing the formation of insoluble salt precipitates such as calcium and magnesium. The detergent is assisted by an enzyme preparation which is natural, easy to degrade and free of adverse effects on the environment, and the detergent can promote the detergency by adding a small amount of lipase and amylase into the detergent. The methyl silicone oil has chemical inertia and physiological inertia, is not easy to react with other substances, is non-toxic and harmless to organisms, has small pollution to the environment, can obviously reduce the surface tension, and is used for eliminating foam in a solution so as to meet the design requirements. In addition, considering the factors of energy saving and low temperature trend development, oxygen-containing bleaching agents (such as tetraacetylethylenediamine, sodium percarbonate and chlorine dioxide) can be selected as bleaching agents in the cleaning agent, but the antagonism of the chlorine dioxide with citric acid and enzyme products in the bleaching agents needs to be considered.

The invention will now be further described with reference to the following examples, which are intended to be illustrative of the invention and are not to be construed as limiting the invention.

Example 1

A low-foam environment-friendly bus outer skin cleaning agent comprises the following components in percentage by weight and a compounding process:

s1, weighing 70 parts of deionized water, evenly dividing into two parts for later use, weighing 2.5 parts of lauroyl methyl glucamide, 0.8 part of fatty alcohol polyoxypropylene polyoxyethylene ether and 0.8 part of alkyl ammonium sulfate, mixing uniformly, stirring at a rotating speed of 300rad/min, heating to 45 ℃, slowly adding 35 parts of deionized water into the mixed solution during stirring, and taking 30min during the whole process to obtain solution A.

S2, weighing 0.5 part of methyl silicone oil according to the proportion, stirring at a rotating speed of 200rad/min with constant power, slowly adding the melt A into the methyl silicone oil, gradually reducing the rotating speed of the melt A at any time, and then gradually increasing the rotating speed, (when 2.7 parts of the melt A is added, the rotating speed of the stirrer is lowest), the whole process lasts for 45min, and then the solution B is obtained;

s3, dissolving 10 parts of sodium citrate, 6 parts of sodium carbonate, 7 parts of sodium silicate, 0.4 part of amylase, 0.4 part of lipase and 1 part of tetraacetylethylenediamine in 35 parts of deionized water according to the proportioning amount to obtain a solution C;

s4, slowly adding the solution B into the solution A while stirring at 35 ℃, wherein the time for the whole process is 15min, then adding 1 part of Arabic gum, adjusting the viscosity, cooling to room temperature, adding 0.6 part of citric acid, and adjusting the pH to be neutral to obtain the product.

Examples 2 to 6

The compounding process is the same as that of example 1, and the raw material components (unit: mass percent) are as follows:

among them, chlorine dioxide was used as the oxygen bleaching agent in example 2, and tetraacetylethylenediamine was used as the oxygen bleaching agent in the remaining examples.

Detection example 1

Detergent detergency test: mixing animal oil, bird feces, clay and rust according to the proportion of 1:0.5:1:0.5, and adding into 5% of glyceryl monostearate as artificial dirt; then washing the iron sheet coated with the paint film with absolute ethyl alcohol and deionized water, drying, cooling to room temperature, and weighing M₀Uniformly smearing artificial dirt on one surface coated with a paint film by using a soft brush, placing the paint film at room temperature for 24 hours, and weighing M₁Arranged side by side. Then the cleaning agent of the above examples 2 to 6 was mixed with tap water at a ratio of 1:100And then sequentially sweeping one side coated with the paint film by using a high-pressure water gun. Finally, drying the iron sheet coated with the paint film, placing the iron sheet in a drying oven at 105 ℃ for drying for 4h, and weighing M₂. The detergency ratio was calculated according to the following formula,

. Among them, the reference example is washing by mixing tap water with a general detergent, a general commercial detergent (Tortoise brand carwash).

Detection example 2

And (3) testing foaming performance: preparing the cleaning agent in the above examples 1-6 into a melt with a mass fraction of 2%, measuring 5mL of the melt, placing the melt in a 100mL measuring cylinder, diluting the melt into 100mL of a 5% solution, adding the solution into a 500mL measuring cylinder with a plug, uniformly shaking up and down for 20 times with the same force and rhythm, measuring the foam volume (unit: mL) of the cleaning solution at 0min and 5min respectively, and measuring the foam volume in parallel for three times to obtain the average value. Wherein, the foam volume measured in 0min is the basis for evaluating the foaming performance of the substance, and the volume measured in 5min is the basis for measuring the foam stability performance of the substance. Among them, a reference example is a general commercial detergent (Tortoise brand carwash).

Detection example 3

And (3) degradation degree test: the degradation degree test of the above examples 1-6 was carried out according to the national standard GB/T15818 and 2018. Wherein the degradation degree is the degradation degree (unit:%) on the seventh day, and the reference value is the industry minimum standard.

The test results of test example 1, test example 2, and test example 3 are shown in the following table:

as can be seen from the table above, the detergent prepared by the invention has excellent degradation rate and detergency, and is obviously higher than the industry reference value and the cleaning rate of the existing cleaning mode.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.

Claims (8)

1. The low-foam environment-friendly bus outer skin cleaning agent is characterized by comprising the following components in percentage by weight: 2-5 parts of lauroyl methyl glucamide; 0.5-1.5 parts of fatty alcohol-polyoxypropylene polyoxyethylene ether; 0.5-1.5 parts of alkyl ammonium sulfate; 0-1 part of citric acid; 8-15 parts of sodium citrate; 5-10 parts of sodium carbonate; 5-10 parts of sodium silicate; 0.5-1.5 parts of Arabic gum; 0.5-1.5 parts of oxygen-containing bleaching agent; 0-0.5 parts of lipase; 0-0.5 parts of amylase; 0.4-1 part of methyl silicone oil; 51-77.6 parts of deionized water.

2. The low-foam environment-friendly bus exterior skin cleaner as claimed in claim 1, which comprises the following components in percentage by weight: 2.5 parts of lauroyl methyl glucamide; 0.8 part of fatty alcohol polyoxypropylene polyoxyethylene ether; 0.8 part of alkyl ammonium sulfate; 0.6 part of citric acid; 10 parts of sodium citrate; 6 parts of sodium carbonate; 6 parts of sodium silicate; 1 part of Arabic gum; 1 part of oxygen-containing bleaching agent; 0.4 part of lipase; 0.4 part of amylase; 0.5 part of methyl silicone oil; and 70 parts of deionized water.

3. The low-foam environment-friendly bus exterior skin cleaner as claimed in claim 1, wherein the formula of the lauroyl methyl glucamide is:

wherein m is between 8 and 12, and R is aliphatic hydrocarbon.

4. The low-foam environment-friendly bus exterior skin detergent as claimed in claim 1, wherein the structural formula of the fatty alcohol polyoxypropylene polyoxyethylene ether is as follows:

wherein m is between 2 and 8, n is between 2 and 8, R is fatA hydrocarbon.

5. The low-foam environment-friendly bus exterior skin cleaner as claimed in claim 1, wherein the alkyl ammonium sulfate has a structural formula:

wherein R is aliphatic hydrocarbon, and the number of carbon atoms in the aliphatic hydrocarbon is 12-18.

6. The low-foam environment-friendly bus exterior skin cleaner as claimed in claim 1, wherein the methyl silicone oil is polydimethylsiloxane: the structural formula is as follows:

wherein n is 5000-10000.

7. The low-foam environment-friendly bus exterior skin cleaner as claimed in claim 1, wherein the oxygen-containing bleaching agent is one of tetraacetylethylenediamine, sodium percarbonate and chlorine dioxide.

8. The compounding method of the low-foam environment-friendly bus outer skin detergent based on any one of claims 1 to 7 is characterized by comprising the following compounding steps:

s1, weighing deionized water according to a ratio, evenly dividing the deionized water into two parts for later use, adding lauroyl methyl glucamide, fatty alcohol polyoxypropylene polyoxyethylene ether and alkyl ammonium sulfate according to the ratio, uniformly mixing, stirring at a rotating speed of 200-300 rad/min, heating to 40-50 ℃, and slowly adding one part of deionized water into the mixed solution during stirring to obtain a solution A;

s2, weighing methyl silicone oil according to the proportion, stirring at a rotating speed of 200-300 rad/min, and slowly adding the melt A into the methyl silicone oil to obtain a solution B;

s3, dissolving sodium citrate, sodium carbonate, sodium silicate, amylase, lipase and oxygen-containing bleaching agent in another part of deionized water according to the proportion and the dosage to obtain a solution C;

and S4, slowly adding the solution C into the solution B while stirring at the temperature of 30-40 ℃, then adding Arabic gum, adjusting the viscosity, cooling to room temperature, adding citric acid, and adjusting the pH value to be neutral to obtain the target product.