Environment-friendly automobile glass cleaning fluid and preparation method thereof

Abstract

The invention belongs to the technical field of glass cleaning fluid, and particularly relates to environment-friendly automobile glass cleaning fluid and a preparation method thereof. The anti-freezing and degreasing agent comprises the following components in percentage by mass: 21%-30% of an anti-freezing and degreasing agent, 0.01%-0.02% of an anionic surfactant, 0.01%-0.02% of a nonionic surfactant, 0.01%-0.02% of a complexing agent, 0.01%-0.20% of a lubricant, 0.10%-0.50% of a corrosion inhibitor, 0.25%-0.5% of a film-forming agent and the balance of desalted water. The cleaning solution not only has cleaning, anti-freezing and anti-fogging properties, but also has the characteristics of delaying aging of rubber and plastic and corrosion of metal, and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of glass cleaning fluids, and in particular relates to an environmentally friendly automobile glass cleaning fluid and a preparation method thereof. Background Art

[0002] With the rapid development and popularization of the automobile industry, the importance of automobile maintenance and care has become increasingly prominent, especially the cleaning of automobile windshields, which is directly related to driving safety and driving experience. When the car is in use, the windshield will absorb and stick to various dirt such as dust, rain stains, insect corpses, etc., which will affect the driver's vision in serious cases and cause driving safety hazards. Automobile windshield cleaning fluid can remove dirt on the car windshield in time to provide protection for driving safety.

[0003] At present, the automobile windshield cleaning fluid is mainly methanol type and ethanol type, and most of the products sold on the market are of low quality. Some of them are even directly mixed with detergent and water, or mixed with methanol and ethanol and water, without any functional additives. This type of glass cleaning fluid can only play a simple cleaning role, and it is difficult to remove gum, insect corpses, and stubborn stains. It may even cause glass scratches due to improper use of glass cleaning fluid, and it is easy to freeze and cannot be used in winter. Unqualified glass cleaning fluid can also cause the car paint film to fall off and discolor, the sealing rubber to age and deform, and the storage and cleaning system plastics to age, etc., which affects the service life of related accessories. Therefore, it is urgent to develop a new type of automobile windshield cleaning fluid that has both efficient decontamination ability and no corrosion to rubber and metal and high stability.

[0004] At the same time, the main indicators of coal-based ethanol produced as a byproduct of coal-to-ethylene glycol are ethanol content (20℃) / (w / %) ≥ 90%, methanol / (w / %) ≤ 0.2%, isopropanol / (w / %) ≤ 0.2%, acid (in terms of acetic acid) / (mg / L) ≤ 0.001%, and evaporation residue content / (w / %) ≤ 0.001%. The purity of ethanol at this concentration is low, and it is difficult to sell and use as a chemical raw material product. For enterprises, a large amount of low-concentration ethanol has become a burden, and how to reasonably and effectively utilize such byproducts is particularly important. In recent years, my country has planned, constructed and put into production dozens of coal-to-ethylene glycol projects. Due to the inevitable side reactions in the coal-to-ethylene glycol route, some ethanol is generated as a byproduct of hydrogenation, and coal-based ethanol is obtained by distillation separation. For enterprises, these coal-based ethanol are impurities of coal-to-ethylene glycol and need to be treated urgently. How to use coal-based ethanol as a raw material for the production of automobile windshield washer fluid, and then realize the on-site conversion of additional products and obtain higher economic value, and reduce resource waste, is an urgent problem to be solved. Summary of the invention

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide an environmentally friendly automobile glass cleaning fluid and a preparation method thereof, which not only has cleaning, antifreeze and anti-fog properties, but also has the characteristics of delaying rubber, plastic aging and metal corrosion.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: In a first aspect, the present invention provides an environmentally friendly automobile glass cleaning fluid, which comprises, by mass percentage, 21%-30% of an antifreeze degreasing agent, 0.01%-0.02% of anionic surfactant, 0.01%-0.02% of non-ionic surfactant, 0.01%-0.02% of complexing agent, 0.01%-0.20% of lubricant, 0.10%-0.50% of corrosion inhibitor and 0.25%-0.5% of film-forming agent, with the remainder being desalted water.

[0007] Preferably, the antifreeze and degreasing agent is coal-based ethanol.

[0008] Preferably, the anionic surfactant is sodium dodecylbenzene sulfonate.

[0009] Preferably, the nonionic surfactant is dipropylene glycol butyl ether.

[0010] Preferably, the complexing agent is sodium bicarbonate.

[0011] Preferably, the corrosion inhibitor is sodium dihydrogen phosphate.

[0012] Preferably, the lubricant is glycerol.

[0013] Preferably, the film-forming agent is ethylene glycol.

[0014] In a second aspect, the present invention provides a method for preparing an environmentally friendly automobile glass cleaning fluid, which specifically comprises the following steps: The antifreeze degreasing agent, anionic surfactant, nonionic surfactant, complexing agent, lubricant, corrosion inhibitor, film-forming agent and desalted water are mixed and stirred until completely dissolved to obtain the environmentally friendly automobile windshield cleaning fluid.

[0015] Preferably, the stirring temperature is room temperature.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The antifreeze degreasing agent of the present invention can significantly reduce the freezing point of the cleaning fluid, prevent freezing in a low-temperature environment, ensure that the cleaning fluid can be used normally in cold weather, and can effectively dissolve and disperse organic pollutants such as grease and oil on the glass surface, thereby improving the cleaning effect; the anionic surfactant and the nonionic surfactant work synergistically to significantly improve the wetting, penetration, emulsification and decontamination capabilities of the cleaning fluid, and can quickly and thoroughly remove various dirt on the glass surface; the complexing agent and the corrosion inhibitor work together to prevent metal ion deposition and the corrosion of rubber, metal and other parts by the cleaning fluid, thereby protecting automobile parts from damage; the protective film formed by the film-forming agent on the glass surface can resist the adhesion of dust and water mist, thereby improving the clarity of the driving field of vision, while the lubricant reduces the friction between the wiper and the glass, thereby preventing scratches, thereby further improving driving safety; the desalted water is used as a solvent to ensure that each component is evenly dispersed to form a stable cleaning fluid. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only embodiments of a part of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0018] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0019] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0020] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0021] The invention provides an environment-friendly automobile glass cleaning fluid, which comprises, by mass percentage, 21%-30% of an antifreeze degreasing agent, 0.01%-0.02% of anionic surfactant, 0.01%-0.02% of nonionic surfactant, 0.01%-0.02% of complexing agent, 0.01%-0.20% of lubricant, 0.10%-0.50% of corrosion inhibitor and 0.25%-0.5% of film-forming agent, and the balance is desalted water.

[0022] Both anionic surfactants and nonionic surfactants can significantly reduce the surface tension of water, making it easier for the cleaning liquid to wet the glass surface, forming a uniform film, which helps the cleaning liquid to better penetrate into the tiny gaps and depressions on the glass surface, thereby improving the cleaning effect. When the cleaning liquid comes into contact with insoluble dirt such as oil on the glass surface, anionic surfactants and nonionic surfactants can wrap up these dirt to form emulsion droplets, making the dirt such as oil that was originally difficult to remove easier to disperse and remove, thereby improving the cleaning ability of the cleaning liquid.

[0023] Complexing agents are used to complex metal elements and have a good complexing effect on heavy metals, thereby preventing these metal ions from depositing on the surface of glass or cleaning systems. Complexing agents can ensure that the active ingredients in the cleaning solution can more fully contact the glass surface, thereby removing dirt more thoroughly.

[0024] Lubricants can provide a lubricating film between the glass surface and the wiper during the cleaning process. The lubricating film can significantly reduce the friction generated by the wiper when wiping the glass, thereby reducing the wear of the wiper on the glass surface and extending the service life of the wiper and glass. By reducing friction, lubricants can also improve the wiping effect of the wiper. Under the lubrication effect, the wiper can slide more smoothly on the glass surface, reduce jumping and vibration, thereby more thoroughly removing dirt and moisture on the glass and improving the clarity of the driving field of vision.

[0025] Film formers can form a transparent and durable protective film on the surface of automobile glass. The protective film can not only enhance the anti-fouling performance of the glass, reduce the adhesion of dirt such as dust and water mist, but also improve the clarity of the driving field of vision, providing drivers with a better driving experience. At the same time, the protective film formed by the film former has excellent waterproof performance, which can effectively prevent rainwater from forming water film or water droplets on the glass surface, thereby keeping the glass surface dry and clear.

[0026] Desalted water is the solvent of the cleaning solution, providing a stable dissolving environment for other components, allowing other components to be evenly dispersed in the solution to form a stable cleaning solution system.

[0027] Among them, the antifreeze and degreasing agent is coal-based ethanol, and ethanol can also be prepared by other process routes; coal-based ethanol (derived from the by-product of coal-to-ethylene glycol) is the main raw material, among which the ethanol content (20°C) / (w / %) ≥90%, methanol / (w / %) ≤0.2%, isopropanol / (w / %) ≤0.2%, acid (calculated as acetic acid) / (mg / L) ≤0.001%, and evaporation residue content / (w / %) ≤0.001%. Its high purity and low impurity content make it an ideal antifreeze and degreasing base. The addition of coal-based ethanol not only reduces production costs, but also realizes the effective utilization of by-products; at the same time, coal-based ethanol, as an organic solvent, has a low freezing point. Adding it to the cleaning fluid can significantly lower the overall freezing point of the cleaning fluid, prevent the cleaning fluid from freezing in low temperature environments (such as winter), and ensure that the cleaning fluid can still be used normally in cold weather to maintain the cleaning effect on the windshield; secondly, coal-based ethanol has good solubility and permeability, and can effectively dissolve and disperse organic pollutants such as grease and oil on the glass surface. The degreasing effect of antifreeze degreasing agent in the cleaning fluid is of great significance for maintaining the cleanliness of the windshield and extending the service life of the wipers.

[0028] The anionic surfactant is sodium dodecylbenzene sulfonate. Sodium dodecylbenzene sulfonate can effectively remove various stains, including grease, dust, etc. Its molecular structure has hydrophobic groups and hydrophilic groups, which can combine with water and dirt at the same time, separate and remove dirt from the surface of the object; and sodium dodecylbenzene sulfonate is stable to chemical properties such as alkali, dilute acid, and hard water, and is not easily affected by the external environment and becomes ineffective.

[0029] The nonionic surfactant is dipropylene glycol butyl ether. Dipropylene glycol butyl ether can effectively reduce the surface tension between liquid and solid or liquid and gas, thereby promoting the wetting and spreading of liquid on the solid surface.

[0030] The complexing agent is sodium bicarbonate. As an alkaline reagent, sodium bicarbonate can be used to neutralize dissolved acidic metal compounds on the surface of glass, used to complex metal elements, has a good complexing effect on heavy metals, and can also adjust the pH of the solution.

[0031] The corrosion inhibitor is sodium dihydrogen phosphate. Sodium dihydrogen phosphate can react with oxides on the metal surface to generate phosphates, thereby forming a dense protective film on the metal surface. The protective film can effectively prevent further oxidation reactions on the metal surface and reduce the occurrence of corrosion; it significantly improves the durability of the metal surface. By reducing the occurrence of corrosion, the service life of the metal is extended.

[0032] The lubricant is glycerol, which has excellent lubrication properties and can reduce friction and wear.

[0033] The film-forming agent is ethylene glycol. As a film-forming aid, ethylene glycol can promote the fusion and film-forming process of polymer particles, and can help form a smooth and uniform film layer by reducing surface tension, increasing the contact area and affinity between the coating and the substrate, and the like.

[0034] The second object of the present invention is to provide a method for preparing an environmentally friendly automobile glass cleaning fluid, which specifically comprises the following steps: The antifreeze degreasing agent, anionic surfactant, nonionic surfactant, complexing agent, lubricant, corrosion inhibitor, film-forming agent and desalted water are mixed and stirred at room temperature until they are completely dissolved to obtain the environmentally friendly automobile windshield cleaning fluid.

[0035] This project adopts solvent compounding technology to better dissolve dirt on the glass surface; adopts surfactant compounding technology to improve the cleaning and emulsification effect of the cleaning fluid; adopts antifreeze film-forming agent compounding technology to reduce the amount of single film-forming agent used and reduce product costs; adopts corrosion inhibitor compounding technology to effectively delay the aging of wiper rubber, has no effect on car paint, does not corrode metal parts, and effectively extends the service life of windshield and wipers.

[0036] The present invention utilizes coal-based ethanol, a byproduct of coal-based ethylene glycol, as a raw material. Coal-based ethanol is a byproduct of coal-based ethylene glycol. Its ethanol purity is low and it is difficult to sell and use as a chemical raw material product. As an additive for glass cleaning fluid, it can improve the utilization rate of resources and enhance the added value of products. Functional additives such as surfactants, complexing agents, lubricants, corrosion inhibitors, and film-forming agents are added to prepare environmentally friendly automobile windshield cleaning fluid. All kinds of additives used are easily soluble in water, do not need to be dissolved by high-temperature heating, and the preparation process is simple, which reduces the difficulty of operation and improves the safety performance during the preparation process. The glass cleaning fluid has a low content of additives, and the glass cleaning fluid has strong cleaning ability, high antifreeze and anti-fogging ability, and excellent properties such as resistance to rubber corrosion, plastic aging and metal corrosion with less additives, and the preparation cost is low. It solves the shortcomings of traditional glass cleaning fluids such as environmental pollution, difficulty in removing stains, and easy corrosion to rubber, plastic, metal, etc., and at the same time achieves efficient utilization of coal-based ethanol resources.

[0037] Example 1 Weigh 26 parts of coal-based ethanol, 0.01 parts of sodium dodecylbenzene sulfonate, 0.01 parts of dipropylene glycol butyl ether, 0.01 parts of sodium bicarbonate, 0.01 parts of glycerol, 0.1 parts of sodium dihydrogen phosphate, 0.25 parts of ethylene glycol and 73.61 parts of desalted water according to the mass ratio, mix and stir at room temperature until completely dissolved to obtain the environmentally friendly automobile glass cleaning liquid. The test results of the glass cleaning liquid are shown in Table 1: Table 1 Test results of cleaning liquid performance data prepared in Example 1

[0038] Example 2 Weigh 26 parts of coal-based ethanol, 0.02 parts of sodium dodecylbenzene sulfonate, 0.02 parts of dipropylene glycol butyl ether, 0.02 parts of sodium bicarbonate, 0.20 parts of glycerol, 0.50 parts of sodium dihydrogen phosphate, 0.50 parts of ethylene glycol and 72.74 parts of desalted water according to the mass ratio, mix and stir at room temperature until completely dissolved to obtain the environmentally friendly automobile glass cleaning liquid. The test results of the glass cleaning liquid are shown in Table 2: Table 2 Test results of cleaning liquid performance data prepared in Example 2

[0039] From the data in Table 1 and Table 2, it can be seen that the coal-based ethanol glass cleaning liquid has a pH value closer to neutral and is more environmentally friendly. The test results of metal corrosion, rubber influence, plastic influence and other items are also far lower than the required values ​​in the national standard, which can better prevent metal corrosion, rubber aging, plastic deformation and other effects; low temperature stability and heating stability have shown good stability, suitable for long-term use and storage. Therefore, the coal-based ethanol glass cleaning liquid of the present invention is a glass cleaning liquid with excellent performance.

[0040] Example 3 21 parts of coal-based ethanol, 0.015 parts of sodium dodecylbenzene sulfonate, 0.015 parts of dipropylene glycol butyl ether, 0.015 parts of sodium bicarbonate, 0.10 parts of glycerol, 0.20 parts of sodium dihydrogen phosphate, 0.30 parts of ethylene glycol and 78.355 parts of desalted water were weighed according to the mass ratio, mixed and stirred at room temperature until completely dissolved to obtain the environmentally friendly automobile glass cleaning fluid.

[0041] Example 4 26 parts of coal-based ethanol, 0.015 parts of sodium dodecylbenzene sulfonate, 0.015 parts of dipropylene glycol butyl ether, 0.015 parts of sodium bicarbonate, 0.05 parts of glycerol, 0.30 parts of sodium dihydrogen phosphate, 0.35 parts of ethylene glycol and 73.255 parts of desalted water were weighed according to the mass ratio, mixed and stirred at room temperature until completely dissolved, to obtain the environmentally friendly automobile glass cleaning fluid.

[0042] Example 5 30 parts of coal-based ethanol, 0.015 parts of sodium dodecylbenzene sulfonate, 0.015 parts of dipropylene glycol butyl ether, 0.015 parts of sodium bicarbonate, 0.15 parts of glycerol, 0.40 parts of sodium dihydrogen phosphate, 0.45 parts of ethylene glycol and 68.955 parts of desalted water are weighed according to the mass ratio, mixed and stirred at room temperature until completely dissolved to obtain the environmentally friendly automobile glass cleaning fluid.

[0043] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. An environmentally friendly automobile glass cleaning fluid, characterized in that: The mass percentage includes 21%-30% antifreeze degreasing agent, 0.01%-0.02% anionic surfactant, 0.01%-0.02% non-ionic surfactant, 0.01%-0.02% complexing agent, 0.01%-0.02% lubricant, 0.01%-0.20%, corrosion inhibitor 0.10%-0.50% and film-forming agent 0.25%-0.5%, and the balance is desalted water.

2. The environmentally friendly automobile glass cleaning fluid according to claim 1, characterized in that: The antifreeze and degreasing agent is coal-based ethanol.

3. The environmentally friendly automobile glass cleaning fluid according to claim 1, characterized in that: The anionic surfactant is sodium dodecylbenzene sulfonate.

4. The environmentally friendly automobile glass cleaning fluid according to claim 1, characterized in that: The nonionic surfactant is dipropylene glycol butyl ether.

5. The environmentally friendly automobile glass cleaning fluid according to claim 1, characterized in that: The complexing agent is sodium bicarbonate.

6. The environmentally friendly automobile glass cleaning fluid according to claim 1, characterized in that: The corrosion inhibitor is sodium dihydrogen phosphate.

7. The environmentally friendly automobile glass cleaning fluid according to claim 1, characterized in that: The lubricant is glycerol.

8. The environmentally friendly automobile glass cleaning fluid according to claim 1, characterized in that: The film-forming agent is ethylene glycol.

9. A method for preparing an environmentally friendly automobile glass cleaning fluid according to any one of claims 1 to 8, characterized in that: The specific steps include: The antifreeze degreasing agent, anionic surfactant, nonionic surfactant, complexing agent, lubricant, corrosion inhibitor, film-forming agent and desalted water are mixed and stirred until completely dissolved to obtain the environmentally friendly automobile glass cleaning liquid.

10. The method for preparing an environmentally friendly automobile glass cleaning fluid according to claim 9, characterized in that: The stirring temperature is room temperature.

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