Composite cleaning agent for automobile paint surface maintenance based on nano dry cleaning technology and preparation method of composite cleaning agent

Abstract

The invention discloses a composite cleaning agent for automobile paint maintenance based on a nanometer dry cleaning technology and a preparation method thereof, and belongs to automobile cleaning supplies. The composite cleaning agent comprises 8-12% of nano oxide, 15-22% of a surfactant, 12-18% of a natural maintenance component, 10-15% of a functional additive and the balance of a solvent carrier. According to the principle, nano silicon dioxide forms a three-dimensional network structure through a sol-gel method, and forms a compact hydrophobic layer on the paint surface under the synergistic effect of the nano silicon dioxide and polyhydroxy arylamine modified silicone oil. Quaternary ammonium salt groups in the modified silicone oil and metal ions on the paint surface generate electrostatic interaction, and the wiping force is reduced by 60% in cooperation with the ball effect of the nano silicon dioxide. The citric acid and the tea saponin form a composite chelating agent, the removal rate of inorganic stains such as rust and bird droppings reaches 98%, and meanwhile corrosion to aluminum parts is avoided.

Description

Technical Field

[0001] This invention relates to the field of automotive cleaning products technology, and more specifically to a composite cleaning agent for automotive paint surface maintenance based on nano-dry cleaning technology and its preparation method. Background Technology

[0002] With the rapid increase in car ownership in China, the demand for car washes is growing. Traditional car washing methods involve water washing, which requires a large amount of water whether washing at home or at a car wash. Furthermore, the car wash detergents used in traditional water washing not only corrode the car paint but also cause significant environmental pollution.

[0003] Traditional car washes require dedicated washing areas, equipment, large amounts of tap water, and car wash detergent. In recent years, with rising prices, the costs of site rentals, tap water, car wash detergent, and equipment have all increased, leading to higher operating costs for car wash shops and consequently, higher expenses for car owners.

[0004] With the increasing scarcity of drinking water and the country's strict requirements on environmental pollution, the traditional car wash industry urgently needs to transform and upgrade, requiring it to reduce water consumption and environmental pollution as much as possible, in order to reduce the waste of water resources and improve the protection of the ecological environment.

[0005] Nano-dry cleaning technology achieves both waterless cleaning and long-lasting protection through the permeability and surface modification of nano-sized particles. While existing technologies, such as the German Kärcher nano-coating agent, offer coating capabilities, their stain removal ability is limited. This invention overcomes the limitations of single-function solutions through the synergistic effect of multiple components, forming an integrated "cleaning-protection-brightening" solution. Summary of the Invention

[0006] In view of this, the present invention provides a composite cleaning agent for automotive paint surface maintenance based on nano dry cleaning technology and its preparation method, so as to solve the problems encountered in the background art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] This composite cleaner for car paint protection, based on nano-dry cleaning technology, includes the following ingredients by weight percentage:

[0009] The composition consists of 8-12% nano-oxides, 15-22% surfactants, 12-18% natural care components, 10-15% functional additives, and the remainder is a solvent carrier.

[0010] Preferably, the nano-oxide comprises nano-silica and nano-titanium dioxide, wherein the mass ratio of nano-silica to nano-titanium dioxide is (4-5):1.

[0011] Preferably, the surfactant comprises alkyl glycoside, sodium fatty alcohol polyoxyethylene ether sulfate, and polyhydroxy aromatic amine modified silicone oil; wherein the mass ratio of the alkyl glycoside to the sodium fatty alcohol polyoxyethylene ether sulfate is 2:3, and the mass ratio of the nano silica to the polyhydroxy aromatic amine modified silicone oil is 5:1.

[0012] Preferably, the natural care components include food-grade soy lecithin, beeswax, and carnauba wax; the mass ratio of the food-grade soy lecithin, beeswax, and carnauba wax is 3:2:1.

[0013] Preferably, the functional additives include tea saponin and citric acid; the molar ratio of tea saponin to citric acid is 1:1.

[0014] Preferably, the solvent carrier comprises white oil and water; the mass ratio of the white oil to the water is 1:4.

[0015] The preparation method of the above-mentioned composite cleaner for automotive paint surface maintenance based on nano-dry cleaning technology includes the following steps:

[0016] (1) Add nano-silica and nano-titanium dioxide to white oil in a mass ratio, and sonicate for 30-45 min, using an ice-water bath to control the temperature during the process, to obtain a suspension.

[0017] (2) Add water to the reactor, heat to 53-57℃, and then add alkyl glycoside, sodium fatty alcohol polyoxyethylene ether sulfate and polyhydroxy aromatic amine modified silicone oil in sequence, and stir for 60-90 min.

[0018] (3) Soybean lecithin, beeswax and carnauba wax are placed in a water bath heating vessel, melted and then injected into the reaction vessel of step (2) through a high-pressure homogenizer to form an oil-in-water emulsion.

[0019] (4) After cooling to 35-45℃, add tea saponin, citric acid and the suspension in step (1), adjust the pH, and finally add water to 100% of the total volume. After filtration through a microporous membrane, fill the container.

[0020] Preferably, the frequency of the ultrasound in step (1) is 20-25 kHz; the temperature control is to control the temperature to be <40℃;

[0021] Preferably, the melting temperature in step (3) is 80-87°C; and the homogenization pressure is 15-20 MPa.

[0022] Preferably, the pH adjustment in step (4) is adjusted to 7.5-8.0; the pore size of the microporous filter membrane is 0.2 μm.

[0023] As can be seen from the above technical solution, compared with the prior art, the present invention has the following technical effects:

[0024] Nano-silica forms a three-dimensional network structure through a sol-gel method, which synergistically works with polyhydroxy aromatic amine-modified silicone oil to form a dense hydrophobic layer on the paint surface. Experimental data show that the contact angle can reach 115°, which is 30% higher than that of traditional wax layers, and the rainwater self-cleaning rate is increased to 92%.

[0025] The quaternary ammonium salt groups in the modified silicone oil generate electrostatic interactions with the metal ions on the paint surface. Combined with the ball-bearing effect of nano-silica, this reduces the wiping force by 60%. Actual measurements show that after 100 wiping cycles under 3N pressure, the scratch depth on the paint surface is <0.5μm.

[0026] Citric acid and tea saponin form a complex chelating agent, achieving a 98% removal rate for inorganic stains such as rust and bird droppings, while simultaneously preventing corrosion of aluminum parts. Experiments show that this formula exhibits a corrosion rate of only 0.02 g / (m²) on chrome-plated parts. 2 •h), far below the industry standard (0.1g / (m 2 ·h). Detailed Implementation

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1

[0029] This invention discloses a composite cleaner for car paint surface maintenance based on nano-dry cleaning technology, comprising the following components by mass percentage:

[0030] The composition consists of 12% nano-oxides, 15% surfactants, 18% natural care components, 10% functional additives, and the remainder is a solvent carrier.

[0031] In this embodiment: the nano oxides include nano silicon dioxide and nano titanium dioxide, and the mass ratio of nano silicon dioxide to nano titanium dioxide is (4-5):1.

[0032] The surfactants include alkyl glycosides, sodium fatty alcohol polyoxyethylene ether sulfate, and polyhydroxy aromatic amine modified silicone oil; wherein the mass ratio of alkyl glycosides to sodium fatty alcohol polyoxyethylene ether sulfate is 2:3, and the mass ratio of nano silica to polyhydroxy aromatic amine modified silicone oil is 5:1.

[0033] The natural care ingredients include food-grade soy lecithin, beeswax, and carnauba wax; the mass ratio of food-grade soy lecithin, beeswax, and carnauba wax is 3:2:1.

[0034] The functional additives include tea saponin and citric acid; the molar ratio of tea saponin to citric acid is 1:1.

[0035] The solvent carrier consists of white oil and water; the mass ratio of white oil to water is 1:4.

[0036] Example 2

[0037] This invention discloses a composite cleaner for car paint surface maintenance based on nano-dry cleaning technology, comprising the following components by mass percentage:

[0038] The composition consists of 8% nano-oxides, 22% surfactants, 12% natural care components, 15% functional additives, and the remainder is a solvent carrier.

[0039] In this embodiment: the nano oxides include nano silicon dioxide and nano titanium dioxide, and the mass ratio of nano silicon dioxide to nano titanium dioxide is (4-5):1.

[0040] The surfactants include alkyl glycosides, sodium fatty alcohol polyoxyethylene ether sulfate, and polyhydroxy aromatic amine modified silicone oil; wherein the mass ratio of alkyl glycosides to sodium fatty alcohol polyoxyethylene ether sulfate is 2:3, and the mass ratio of nano silica to polyhydroxy aromatic amine modified silicone oil is 5:1.

[0041] The natural care ingredients include food-grade soy lecithin, beeswax, and carnauba wax; the mass ratio of food-grade soy lecithin, beeswax, and carnauba wax is 3:2:1.

[0042] The functional additives include tea saponin and citric acid; the molar ratio of tea saponin to citric acid is 1:1.

[0043] The solvent carrier consists of white oil and water; the mass ratio of white oil to water is 1:4.

[0044] Example 3

[0045] This invention discloses a composite cleaner for car paint surface maintenance based on nano-dry cleaning technology, comprising the following components by mass percentage:

[0046] Nano-oxides 8-12%, surfactants 18%, natural care components 15%, functional additives 12%, balance is solvent carrier;

[0047] In this embodiment: the nano oxides include nano silicon dioxide and nano titanium dioxide, and the mass ratio of nano silicon dioxide to nano titanium dioxide is (4-5):1.

[0048] The surfactants include alkyl glycosides, sodium fatty alcohol polyoxyethylene ether sulfate, and polyhydroxy aromatic amine modified silicone oil; wherein the mass ratio of alkyl glycosides to sodium fatty alcohol polyoxyethylene ether sulfate is 2:3, and the mass ratio of nano silica to polyhydroxy aromatic amine modified silicone oil is 5:1.

[0049] The natural care ingredients include food-grade soy lecithin, beeswax, and carnauba wax; the mass ratio of food-grade soy lecithin, beeswax, and carnauba wax is 3:2:1.

[0050] The functional additives include tea saponin and citric acid; the molar ratio of tea saponin to citric acid is 1:1.

[0051] The solvent carrier consists of white oil and water; the mass ratio of white oil to water is 1:4.

[0052] Example 4

[0053] This embodiment provides a method for preparing the composite cleaning agent for automotive paint surface maintenance based on nano-dry cleaning technology as described in Examples 1-3, including the following steps:

[0054] (1) Add nano-silica and nano-titanium dioxide to white oil in a mass ratio, and sonicate at 25 kHz for 45 min, during which the temperature is controlled to be <40℃ using an ice-water bath to obtain a suspension.

[0055] (2) Add water to the reactor, heat to 57°C, and then add alkyl glycoside, sodium fatty alcohol polyoxyethylene ether sulfate and polyhydroxy aromatic amine modified silicone oil in sequence, and stir for 60-90 min.

[0056] (3) Soybean lecithin, beeswax and carnauba wax are placed in a water bath heating vessel and melted at 87°C. The melt is then injected into the reaction vessel of step (2) through a high-pressure homogenizer to form an oil-in-water emulsion. The homogenization pressure is 20MPa.

[0057] (4) After cooling to 45°C, add tea saponin, citric acid and the suspension in step (1), adjust the pH to 8.0, and finally add water to 100% of the total volume. After filtration through a 0.2μm microporous membrane, fill the container.

[0058] Example 5

[0059] This embodiment provides a method for preparing the composite cleaning agent for automotive paint surface maintenance based on nano-dry cleaning technology as described in Examples 1-3, including the following steps:

[0060] (1) Add nano-silica and nano-titanium dioxide to white oil in a mass ratio, and sonicate at 20 kHz for 30-45 min, during which the temperature is controlled to be <40℃ using an ice-water bath to obtain a suspension.

[0061] (2) Add water to the reactor, heat to 53°C, and then add alkyl glycoside, sodium fatty alcohol polyoxyethylene ether sulfate and polyhydroxy aromatic amine modified silicone oil in sequence, and stir for 60-90 min.

[0062] (3) Soybean lecithin, beeswax and carnauba wax are placed in a water bath heating vessel and melted at 80°C. The melt is then injected into the reaction vessel of step (2) through a high-pressure homogenizer to form an oil-in-water emulsion. The homogenization pressure is 15MPa.

[0063] (4) After cooling to 35°C, add tea saponin, citric acid and the suspension in step (1), adjust the pH to 7.5, and finally add water to 100% of the total volume. After filtration through a 0.2μm microporous membrane, fill the container.

[0064] Stain cleaning test

[0065] Test subject: White pearlescent BMW 5 Series (parked in a chemical industrial park for 3 months)

[0066] Stain type: Asphalt (5.2g / m³) 2 Shellac (3.8g / m³) 2 Iron powder (2.1g / m³) 2 )

[0067] Processing steps:

[0068] 1. Spray the cleaner from Example 3 (diluted at a ratio of 1:8) onto the paint surface;

[0069] 2. After letting it stand for 3 minutes, wipe it in one direction with a microfiber towel;

[0070] 3. After rinsing with clean water, use a hot air gun (60℃) to accelerate drying.

[0071] Comparison of effects:

[0072] index Product of this invention Traditional car wash liquid industry standards Decontamination rate (%) 99.2 82.5 ≥90 Gloss (Gu) 85→102 85→78 - Hydrophobic angle (°) 122 88 ≥105

[0073] As shown in the table above, the product of this invention has a stronger stain removal rate and better hydrophobic effect compared to traditional car wash liquids.

[0074] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0075] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A composite cleaning agent for automotive paint surface maintenance based on nano-dry cleaning technology, characterized in that, Listed by weight percentage, it includes the following ingredients: The composition consists of 8-12% nano-oxides, 15-22% surfactants, 12-18% natural care components, 10-15% functional additives, and the remainder is a solvent carrier.

2. The composite cleaning agent for automotive paint surface maintenance based on nano-dry cleaning technology according to claim 1, characterized in that, The nano-oxides include nano-silica and nano-titanium dioxide, and the mass ratio of nano-silica to nano-titanium dioxide is (4-5):

1.

3. The composite cleaning agent for automotive paint surface maintenance based on nano-dry cleaning technology according to claim 2, characterized in that, The surfactant comprises alkyl glycoside, sodium fatty alcohol polyoxyethylene ether sulfate, and polyhydroxy aromatic amine modified silicone oil; wherein the mass ratio of the alkyl glycoside to the sodium fatty alcohol polyoxyethylene ether sulfate is 2:3, and the mass ratio of the nano silica to the polyhydroxy aromatic amine modified silicone oil is 5:

1.

4. The composite cleaning agent for automotive paint surface maintenance based on nano-dry cleaning technology according to claim 3, characterized in that, The natural care ingredients include food-grade soybean lecithin, beeswax, and carnauba wax; the mass ratio of the food-grade soybean lecithin, beeswax, and carnauba wax is 3:2:

1.

5. The composite cleaning agent for automotive paint surface maintenance based on nano-dry cleaning technology according to claim 4, characterized in that, The functional additives include tea saponin and citric acid; the molar ratio of tea saponin to citric acid is 1:

1.

6. The composite cleaning agent for automotive paint surface maintenance based on nano-dry cleaning technology according to claim 5, characterized in that, The solvent carrier comprises white oil and water; the mass ratio of white oil to water is 1:

4.

7. The preparation method of the composite cleaning agent for automotive paint surface maintenance based on nano-dry cleaning technology as described in claim 6, characterized in that, Includes the following steps: (1) Add nano-silica and nano-titanium dioxide to white oil in a mass ratio, and sonicate for 30-45 min, using an ice-water bath to control the temperature during the process, to obtain a suspension. (2) Add water to the reactor, heat to 53-57℃, and then add alkyl glycoside, sodium fatty alcohol polyoxyethylene ether sulfate and polyhydroxy aromatic amine modified silicone oil in sequence, and stir for 60-90 min. (3) Soybean lecithin, beeswax and carnauba wax are placed in a water bath heating vessel, melted and then injected into the reaction vessel of step (2) through a high-pressure homogenizer to form an oil-in-water emulsion. (4) After cooling to 35-45℃, add tea saponin, citric acid and the suspension in step (1), adjust the pH, and finally add water to 100% of the total volume. After filtration through a microporous membrane, fill the container.

8. The preparation method of the composite cleaning agent for automotive paint surface maintenance based on nano-dry cleaning technology according to claim 7, characterized in that, The frequency of the ultrasound in step (1) is 20-25 kHz; the temperature control is to control the temperature to be <40℃.

9. The preparation method of the composite cleaning agent for automotive paint surface maintenance based on nano-dry cleaning technology according to claim 7, characterized in that, The melting temperature in step (3) is 80-87℃; the homogenization pressure is 15-20MPa.

10. The preparation method of the composite cleaning agent for automotive paint surface maintenance based on nano-dry cleaning technology according to claim 7, characterized in that, In step (4), the pH is adjusted to 7.5-8.0; the pore size of the microporous filter membrane is 0.2 μm.