Composite additive of cleaning agent for shellac oil stains on surface of motor train unit and preparation method of composite additive

Abstract

The invention discloses a motor train unit train surface shellac oil stain cleaning agent composite additive and a preparation method thereof, and belongs to the field of chemical engineering, the motor train unit train surface shellac oil stain cleaning agent composite additive comprises the following raw materials by mass: 20-30% of a main agent, 5-10% of a surfactant, 8-15% of a solvent, 0.2-1% of a pH regulator, 0.5-2% of a corrosion inhibitor, and the balance deionized water, and the total mass percentage is 100%. The cleaning agent can rapidly permeate and decompose shellac, obviously improve the cleaning effect of shellac and other intractable dirt, the removal rate can reach 95% or above, repeated wiping is not needed, the cleaning efficiency is improved, the cleaning effect and efficiency of shellac and other intractable oil stains on the surface of a front windshield and a train body of a motor train unit train can be effectively improved, the time cost of train maintenance and operation is reduced, and the cleaning agent is worthy of popularization and application. The train operation and maintenance safety is improved.

Description

Technical Field

[0001] This invention belongs to the field of chemical engineering, specifically relating to a composite additive for cleaning shellac and oil stains on the surface of high-speed trains and its preparation method. Background Technology

[0002] During high-speed train operation, a large amount of pollutants easily accumulate on the windshield and body of the train. Among these, insect sap is one of the most stubborn pollutants. Insect sap is formed from a mixture of insect secretions, dead insects, and dust and moisture in the air. It has a strong adhesion to the windshield and body surfaces, and conventional cleaning agents are difficult to completely remove it. If insect sap accumulates on the windshield for a long time, it will seriously affect the driver's visibility and easily lead to driving safety hazards. Currently, most windshield cleaners on the market are ordinary automotive windshield washer fluid or their modified versions, which generally have problems such as ① weak insect sap removal ability; ② poor stability in high and low temperature environments; and ③ material corrosion risks. Body cleaning agents also have these problems. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a composite additive for cleaning shellac and oil stains on the surface of high-speed trains and its preparation method. When added to ordinary windshield washer fluid or car body cleaner, this composite additive can quickly penetrate and decompose shellac, significantly improving the cleaning effect of stubborn stains such as shellac, with a removal rate of over 95%, and eliminating the need for multiple wiping, thus improving cleaning efficiency.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a composite additive for cleaning shellac and oil stains on the surface of high-speed trains, comprising the following raw materials and mass percentages: main agent 20-30%, surfactant 5-10%, solvent 8-15%, pH adjuster 0.2-1%, corrosion inhibitor 0.5-2%, and deionized water to 100%.

[0005] Preferably, the main agent is one or more of diethylene glycolamine, isopropanolamine, and trihydroxyethylamine.

[0006] Preferably, the surfactant is a nonionic surfactant C. 8-12 It is prepared by mixing isomeric alcohol polyoxyethylene ether and anionic surfactant alkyl diphenyl ether sulfonate at a mass ratio of 1.5-2.5:1.

[0007] Preferably, the solvent is one or both of ethylene glycol methyl ether and diethylene glycol butyl ether.

[0008] Preferably, the corrosion inhibitor is a mixture of benzotriazole and octadecyltrimethoxysilane in a mass ratio of 0.5-1.5:1.

[0009] Preferably, the pH adjuster is one or both of citric acid and tartaric acid.

[0010] Another objective of this invention is to provide a method for preparing a composite additive for cleaning shellac oil stains on the surface of high-speed trains, which is carried out according to the following steps: adding deionized water in the formula ratio into a stirring vessel and heating it to 40-45°C, then adding the raw materials, turning on the stirring device, and rotating at 50-60 r / min, and after stirring until it is uniform and transparent, cooling, filtering and filling.

[0011] Compared with existing technologies, the composite additive for cleaning shellac and oil stains on the surface of high-speed trains prepared in this invention has the following advantages: 1. When this composite additive is added to ordinary windshield washer fluid and car body cleaner, it can quickly penetrate and decompose shellac, significantly improving the cleaning effect of stubborn dirt such as shellac, with a removal rate of over 95%. Moreover, it eliminates the need for multiple wiping, improving cleaning efficiency. It can effectively improve the cleaning effect and efficiency of stubborn oil stains such as shellac on the windshield and car body surface of EMU trains, reduce the time cost of train maintenance and operation, and improve train operation and maintenance safety. 2. This composite additive has good high and low temperature stability. Within the temperature range of -40℃ to 60℃, the product does not freeze, separate, or deteriorate, and can be adapted to most regions with different climatic conditions in my country. 3. This composite additive is low in corrosiveness and contains highly efficient corrosion inhibitors, which can effectively protect glass coatings and components such as metals, rubber, and organic coatings; it is environmentally friendly, with a biodegradability rate of over 90%, meeting national environmental emission standards; it is simple to prepare, requires less equipment, has simple process steps, and is easy to mass-produce. Detailed Implementation

[0012] The following will describe the implementation of the present invention in detail with reference to specific embodiments, so that the process of how the present invention uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art, and the raw materials used are all commercially available. Various processes and methods not described in detail are conventional methods known in the art.

[0013] The cleaning agent for shellac and oil stains on the surface of high-speed trains is a compound additive containing the following raw materials and their mass percentages: main agent 20-30%, surfactant 5-10%, solvent 8-15%, pH adjuster 0.2-1%, corrosion inhibitor 0.5-2%, and deionized water to make up to 100%.

[0014] Furthermore, the main agent is one or more of diethylene glycolamine, isopropanolamine, and trihydroxyethylamine.

[0015] Furthermore, the surfactant is a nonionic surfactant C. 8-12It is prepared by mixing isomeric alcohol polyoxyethylene ether and anionic surfactant alkyl diphenyl ether sulfonate at a mass ratio of 1.5-2.5:1.

[0016] Furthermore, the solvent is one or both of ethylene glycol methyl ether and diethylene glycol butyl ether.

[0017] Furthermore, the corrosion inhibitor is a mixture of benzotriazole and octadecyltrimethoxysilane in a mass ratio of 0.5-1.5:1.

[0018] Furthermore, the pH adjuster is one or both of citric acid and tartaric acid.

[0019] The preparation method of the composite additive for cleaning shellac oil stains on the surface of high-speed trains is as follows: add deionized water of the formula ratio to a mixing tank and heat it to 40-45℃, then add the raw materials, turn on the stirring device, and the speed is 50-60r / min. After stirring until it is uniform and transparent, cool, filter and fill.

[0020] Table 1 lists the specific components and contents of the different embodiments and comparative examples. Table 1: Specific components of Examples 1-3 and Comparative Examples 1-3

[0021] Note: All components in the examples are commercially available.

[0022] The composite additives prepared in Examples 1-3 and Comparative Examples 1-3 were added to ordinary glass cleaner at an amount of 2.5%. Then, the glass cleaner and ordinary glass cleaner were used to clean the shellac on the surface of the EMU train. The results are shown in Table 2 below.

[0023] Table 2

[0024] The results above show that the cleaning effect of the compounded surfactant and corrosion inhibitor in this invention is far superior to that of composite additives prepared using a single surfactant and corrosion inhibitor. The main agent works synergistically with the surfactant and solvent to quickly penetrate and soften stubborn dirt such as shellac adhering to the surface. At the same time, the corrosion inhibitor can form an adsorption film to protect the surfaces of various materials commonly used in high-speed trains, such as glass, metal, rubber, plastic, and paint, from corrosion. The biodegradability rate of this invention can reach more than 90%, which meets the national environmental protection emission standards.

[0025] The above description is merely an embodiment of the present invention. It should be noted that, for those skilled in the art, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the technical principles of the present invention. These changes, modifications, substitutions and variations should also be considered within the scope of protection of the present invention.

Claims

1. A compound additive for cleaning shellac and oil stains on the surface of high-speed trains, characterized in that... The raw materials and their mass percentages are as follows: main agent 20-30%, surfactant 5-10%, solvent 8-15%, pH adjuster 0.2-1%, corrosion inhibitor 0.5-2%, and deionized water to make up to 100%.

2. The composite additive for cleaning shellac and oil stains on the surface of high-speed trains according to claim 1, characterized in that, The main agent is one or more of diethylene glycolamine, isopropanolamine, and trihydroxyethylamine.

3. The composite additive for cleaning shellac and oil stains on the surface of high-speed trains according to claim 1, characterized in that, The surfactant is a nonionic surfactant C. 8-12 It is prepared by mixing isomeric alcohol polyoxyethylene ether and anionic surfactant alkyl diphenyl ether sulfonate at a mass ratio of 1.5-2.5:

1.

4. The composite additive for cleaning shellac and oil stains on the surface of high-speed trains according to claim 1, characterized in that, The solvent is one or both of ethylene glycol methyl ether and diethylene glycol butyl ether.

5. The composite additive for cleaning shellac and oil stains on the surface of high-speed trains according to claim 1, characterized in that, The corrosion inhibitor is a mixture of benzotriazole and octadecyltrimethoxysilane in a mass ratio of 0.5-1.5:

1.

6. The composite additive for cleaning shellac and oil stains on the surface of high-speed trains according to claim 1, characterized in that, The pH adjuster is one or both of citric acid and tartaric acid.

7. A method for preparing a composite additive for cleaning shellac oil stains on the surface of high-speed trains as described in claim 1, characterized in that, Proceed as follows: Add the formula-proportioned deionized water to the mixing tank and heat it to 40-45℃. Then add the raw materials, turn on the stirring device, and set the speed to 50-60 r / min. After stirring until it is uniform and transparent, cool, filter, and fill.

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