A decontaminating car wax and a method of making the same

Abstract

This application relates to the field of automotive care chemicals, specifically disclosing a stain-removing automotive wax and its preparation method. The stain-removing automotive wax comprises the following raw materials in parts by weight: 14-18 parts of anti-fouling component, 18-23 parts of stain-removing gel, 9-11 parts of composite wax, 13-15 parts of emulsion, 10-13 parts of composite oil, 3-5 parts of emulsifier, 8-10 parts of thickener, and 5-8 parts of water; the anti-fouling component comprises fluoropropyl methylpolysiloxane-modified acrylate and titanium dioxide-modified mica powder in a mass ratio of 1:0.2-0.3. This application improves the stain-removing and anti-fouling performance of the automotive stain-removing wax, extending the service life and aesthetics of the automotive paint surface.

Description

Technical Field

[0001] This application relates to the field of automotive care chemicals, and more specifically, to a stain-removing automotive wax and a method for preparing the same. Background Technology

[0002] Currently, the main functions of car wax products on the market focus on polishing, dust prevention, and water resistance. However, their effectiveness in removing stubborn stains is limited, especially when dealing with difficult-to-remove dirt such as tree sap and insect residue. This often requires additional cleaning agents or vigorous scrubbing, which is not only time-consuming and laborious but may also damage the paint. Furthermore, the insufficient anti-fouling ability of the wax film formed by cleaning waxes leads to increased cleaning frequency and intensity, further exacerbating the cleaning difficulty. A common solution on the market is to pre-treat with a strong detergent before cleaning, but this not only adds cleaning steps but also poses adverse effects on the environment and human health due to the use of strong detergents.

[0003] Therefore, there is a need for a car cleaning wax with high-efficiency stain removal and anti-fouling properties to clean stubborn dirt on car surfaces, improve the car surface's resistance to dirt, and extend the lifespan and appearance of the car paint. Summary of the Invention

[0004] In order to improve the cleaning and anti-fouling capabilities of automotive cleaning wax, this application provides a cleaning automotive wax and its preparation method.

[0005] Firstly, this application provides a stain-removing car wax, which adopts the following technical solution: A stain-removing car wax comprises the following raw materials in parts by weight: 14-18 parts of anti-fouling component, 18-23 parts of stain-removing gel, 9-11 parts of composite wax, 13-15 parts of emulsion, 10-13 parts of composite oil, 3-5 parts of emulsifier, 8-10 parts of thickener, and 5-8 parts of water; wherein the anti-fouling component comprises fluoropropyl methyl polysiloxane modified acrylate and titanium dioxide modified mica powder in a mass ratio of 1:0.2-0.3.

[0006] By employing the above technical solution, fluoropropyl methylpolysiloxane-modified acrylate is used to introduce fluorosilicone segments, increasing the hydrophobicity of the acrylate. The molecular chains of the fluoropropyl methylpolysiloxane-modified acrylate crosslink with the composite wax, forming a dense and continuous wax film. This effectively blocks the penetration and adhesion of contaminants such as insect glue and resin, improving the antifouling performance of the cleaning wax. Furthermore, by coating modified mica powder with titanium dioxide, combined with the synergistic effect of the wettability of the fluoropropyl methylpolysiloxane-modified acrylate, the surface energy of the mica powder is reduced, increasing its compatibility and dispersibility with the composite wax. Titanium dioxide can... The UV absorber, when combined with the flake-like structure of mica powder, can prevent UV rays from penetrating the wax film. The synergistic effect of the two prevents the photo-oxidative degradation of the wax film and improves the long-term stability of the anti-fouling performance of the cleaning wax. After application, the cleaning gel can penetrate to the interface between stubborn dirt such as shellac and resin and the paint surface, adsorb the dirt and form gel particles. The poor compatibility between the gel particles and the wax film matrix leads to phase separation, which is easily separated from the wax film during wiping. When used in conjunction with anti-fouling components and composite waxes, the cleaning gel achieves the dual effect of highly efficient cleaning and effective anti-fouling, extending the service life and aesthetics of the automotive paint.

[0007] Optionally, the preparation method of the fluoropropylmethylpolysiloxane modified acrylate includes the following steps: Sodium dodecyl sulfonate and polytrifluoropropyl methylsiloxane were added to PBS buffer and stirred at standard ambient temperature to form a homogeneous emulsion. Under an inert gas atmosphere, the mixture was heated to 68-70°C and kept at this temperature for 10-15 min. Potassium persulfate and 20% (by weight) of methyl acrylate were added, and the mixture was kept at this temperature for 35-40 min until the system turned milky white. The remaining methyl acrylate was slowly added dropwise, and the reaction was continued at this temperature for 12-14 h. The temperature was then raised to 80-85°C and kept at this temperature for 1-1.5 h. The mixture was cooled, and the pH was adjusted to 6.5-7.0 with dilute hydrochloric acid. The gel was removed by filtration, and the mixture was washed and dried to obtain fluoropropyl methylpolysiloxane-modified acrylate.

[0008] By adopting the above technical solution, fluoropropyl methylpolysiloxane is grafted onto acrylate, increasing its hydrophobicity and promoting its uniform dispersion in the cleaning wax system. The molecular chains of fluoropropyl methylpolysiloxane-modified acrylate can fill the pores of the wax film and intertwine with the molecular chains of the composite wax to form an interpenetrating network, increasing the density of the wax film and preventing shellac and resin from adhering to the wax film surface, thus improving the anti-fouling ability of the cleaning wax. In addition, the fluoropropyl segments of fluoropropyl methylpolysiloxane-modified acrylate can accumulate on the surface of the wax film to form a fluorocarbon layer. Combined with titanium dioxide-modified mica powder, this inhibits ultraviolet oxidation and decomposition and reflects ultraviolet rays, preventing the wax film molecular chains from breaking and the porosity from increasing due to ultraviolet radiation, which would damage the density of the cleaning wax. This improves the long-term stability of the cleaning wax and avoids the reduction in the service life and aesthetics of the car paint caused by repeated cleaning over a long period of time.

[0009] Optionally, the raw materials for the titanium dioxide-modified mica powder include tetrabutyl titanate and mica powder in a mass ratio of 1:1-2, and the preparation method of the titanium dioxide-modified mica powder includes the following steps: Mica powder and sodium hexametaphosphate were added to deionized water, and the pH of the system was adjusted to 5.0-5.5 with dilute hydrochloric acid. The mixture was sonicated and stirred. Tetrabutyl titanate was added, the temperature was raised to 80-83℃, and the mixture was kept at that temperature for 6-8 hours. The mixture was then aged, washed, dried, and calcined at standard ambient temperature to obtain titanium dioxide modified mica powder.

[0010] Optionally, the method for preparing the stain-removing gel includes the following steps: (1) Add silica microspheres and silane coupling agent to anhydrous ethanol, disperse by ultrasonication, add polyethylene glycol-polylactic acid block copolymer, heat to 60-65℃, stir for 2-2.5h, wash and dry to obtain hydrophilic modified silica; (2) Mix hydrogenated polyisobutylene and petrolatum, heat to 70-80℃, stir until completely melted, add limonene and ethanol, continue stirring, add aluminum stearate, stir at constant temperature for 1-1.2h to obtain gel precursor; (3) Add hydrophilic modified silica and vitamin E acetate to the gel precursor, stir evenly at 60-65℃, and cool to the standard ambient temperature to obtain the cleaning gel.

[0011] Optionally, the mass ratio of the gel precursor, hydrophilic modified silica, and vitamin E acetate is 10:3-5:0.3-0.4.

[0012] By adopting the above technical solution, after the cleaning wax is applied to the car paint surface, the limonene and ethanol in the cleaning gel can quickly penetrate and dissolve pollutants such as shellac and resin. The dissolved shellac and resin molecules combine with the polylactic acid segments grafted onto the surface of silica microspheres through hydrophobic interactions, promoting the efficient adsorption of pollutants by the silica microspheres. The adsorption amount continuously increases, and the bridging of pollutant molecules and interfacial tension drive the silica microspheres to spontaneously aggregate to form gel particles. At the same time, during the adsorption process, the polyethylene glycol segments on the surface of the silica microspheres accumulate to the outer layer of the particles, and the surface of the gel particles changes from hydrophobic to hydrophilic. Moreover, the density of the gel particles is lower than that of the fluoropropyl methyl polysiloxane modified acrylate and composite wax matrix. The interfacial repulsion between the hydrophilic particles and the low surface energy hydrophobic matrix, combined with the density difference, causes the gel particles to float on the surface of the fluoropropyl methyl polysiloxane modified acrylate, composite wax and other hydrophobic matrix, which can be wiped away.

[0013] Optionally, the composite wax comprises carnauba wax, polypropylene wax, and paraffin wax in a mass ratio of 1:0.5:0.1-0.2; the composite oil comprises silicone oil and turpentine oil in a mass ratio of 1:0.1-0.3; and the emulsion is selected from at least one of styrene-acrylic emulsion and pure acrylic emulsion.

[0014] Optionally, the emulsifier is selected from at least one of sodium dodecyl sulfonate, fatty alcohol polyoxyethylene ether, and Tween 80; the thickener is selected from at least one of acrylate copolymer and xanthan gum.

[0015] Secondly, this application provides a method for preparing a stain-removing car wax, which adopts the following technical solution: A method for preparing a stain-removing car wax includes the following steps: Grind the composite wax into powder, heat it until melted, stir and heat to 70-80℃, add the composite oil, continue stirring, add the anti-fouling component, heat to 90-100℃, continue stirring, cool to 40-50℃, add the stain-removing gel and thickener, mix evenly to obtain the oil phase; Emulsifier and emulsion are added to water and stirred to emulsify, thus obtaining an aqueous phase; The oil phase is slowly added dropwise to the aqueous phase at 40-50℃, stirred, and ultrasonically defoamed to obtain a cleaning car wax.

[0016] By adopting the above technical solution, the composite wax is fully fused with the composite oil and antifouling components after melting at a gradient temperature. After cooling, a cleaning gel is added to avoid damage to the gel structure. A thickener is added to obtain a stable oil phase. The emulsifier and emulsion in the aqueous phase work together to disperse the oil phase into tiny droplets, forming an oil-in-water emulsion. Ultrasonic defoaming eliminates air bubbles in the system, ensuring the uniformity and storage stability of the cleaning wax.

[0017] In summary, this application has the following beneficial effects: 1. This application preferably uses fluoropropyl methyl polysiloxane-modified acrylate and titanium dioxide-modified mica powder as antifouling components. The antifouling components work together with the composite wax to form a long-term stable and dense wax film, improving the antifouling ability of the cleaning wax. By adding a cleaning gel, it penetrates and adsorbs stubborn dirt after coating to form gel particles. The gel particles separate from the wax film, improving the cleaning ability of the cleaning wax. The combination of antifouling components, cleaning gel, and composite wax achieves efficient cleaning and effective antifouling, reduces the frequency and difficulty of cleaning, and extends the service life and aesthetics of the automotive paint.

[0018] 2. This application uses polyethylene glycol-polylactic acid block copolymer modified silica microspheres to prepare hydrophilic modified silica, which is then mixed with a gel precursor and vitamin E acetate to prepare a cleaning gel. The gel precursor penetrates the interface between dirt and car paint, adsorbs and encapsulates the dirt to form gel particles. The polyethylene glycol enriched on the outer layer of the gel particles promotes the separation of the gel particles from the wax matrix. Moreover, the density of the gel particles is lower than that of the hydrophobic matrix, so they float at the interface and can be removed with slight wiping, thus improving the cleaning ability of the cleaning wax.

[0019] 3. This application uses gradient heating to fuse composite wax, composite oil and antifouling components to uniformly mix and obtain a wax matrix. Then, a cleaning gel and thickener are added at a lower temperature to obtain a stable oil phase. The emulsion and emulsifier synergistically emulsify the oil phase to obtain a storage-stable cleaning wax. The production process is simple and conducive to industrial production. Detailed Implementation

[0020] The following embodiments provide a further detailed description of this application. Preparation example of antifouling components

[0021] Polytrifluoropropylmethylsiloxane was purchased from Shanghai Mairui Biochemical Technology Co., Ltd., model GEL-FMS-141; PBS buffer was purchased from Shanghai Guyan Industrial Co., Ltd., pH 7.4; dilute hydrochloric acid was purchased from Sinopharm Chemical Reagent Co., Ltd., purity 10%; mica powder was purchased from Wuhan Jiyesheng Chemical Co., Ltd., particle size 1250 mesh; tetrabutyl titanate was purchased from Nantong Bona Chemical Technology Co., Ltd., purity 98%.

[0022] Preparation Example 1 (1) 2g sodium dodecyl sulfonate and 1.5g polytrifluoropropyl methylsiloxane were added to 65g PBS buffer and stirred at standard ambient temperature to form a uniform emulsion. Under a nitrogen atmosphere, the temperature was raised to 70℃ and kept warm for 15min. 0.3g potassium persulfate and 2g methyl acrylate were added and kept warm for 35min until the system turned milky white. 8g methyl acrylate was added dropwise at a rate of 1.2mL / min and the reaction was continued for 14h. The temperature was raised to 85℃ and kept warm for 1h. The temperature was lowered to 25℃ and the pH was adjusted to 6.5 with dilute hydrochloric acid. The gel was removed by filtration through a 200-mesh filter. The product was washed with anhydrous ethanol and water at a mass ratio of 1:1 and dried under vacuum at 50℃ for 12h to obtain fluoropropyl methyl polysiloxane modified acrylate. (2) Add 2g of mica powder and 0.02g of sodium hexametaphosphate to 85g of deionized water, adjust the pH of the system to 5.5 with dilute hydrochloric acid, sonicate for 30min, add 2g of tetrabutyl titanate during stirring, heat to 80℃, keep warm for 8h, age at standard ambient temperature for 12h, wash with anhydrous ethanol, dry at 60℃ for 6h, and calcine at 550℃ for 2h to obtain titanium dioxide modified mica powder; (3) Mix 10g of fluoropropyl methyl polysiloxane modified acrylate and 3g of titanium dioxide modified mica powder evenly to obtain the antifouling component.

[0023] Preparation Example 2 (1) 2g sodium dodecyl sulfonate and 1.5g polytrifluoropropyl methylsiloxane were added to 65g PBS buffer and stirred at standard ambient temperature to form a uniform emulsion. Under a nitrogen atmosphere, the temperature was raised to 68℃ and kept warm for 10min. 0.3g potassium persulfate and 2g methyl acrylate were added and kept warm for 40min until the system turned milky white. 8g methyl acrylate was added dropwise at a rate of 1.0mL / min and the reaction was continued for 12h. The temperature was raised to 80℃ and kept warm for 1.5h. The temperature was lowered to 25℃ and the pH was adjusted to 7.0 with dilute hydrochloric acid. The gel was removed by filtration through a 200-mesh filter. The product was washed with anhydrous ethanol and water at a mass ratio of 1:1 and dried under vacuum at 50℃ for 12h to obtain fluoropropyl methyl polysiloxane modified acrylate. (2) Add 4g of mica powder and 0.02g of sodium hexametaphosphate to 113g of deionized water, adjust the pH of the system to 5.0 with dilute hydrochloric acid, sonicate for 30min, add 2g of tetrabutyl titanate during stirring, heat to 83℃, keep warm for 6h, age at standard ambient temperature for 12h, wash with anhydrous ethanol, dry at 60℃ for 6h, and calcine at 550℃ for 2h to obtain titanium dioxide modified mica powder; (3) Mix 10g of fluoropropyl methyl polysiloxane modified acrylate and 2g of titanium dioxide modified mica powder evenly to obtain the antifouling component.

[0024] Preparation Example 3 The difference from Preparation Example 1 is that in step (3), the fluoropropylmethylpolysiloxane modified acrylate is replaced by an equal amount of acrylate.

[0025] Preparation Example 4 The difference from Preparation Example 1 is that in step (3), titanium dioxide modified mica powder is replaced by titanium dioxide powder in equal amounts. The specific preparation method is as follows: 2g tetrabutyl titanate is added to 25g anhydrous ethanol and stirred evenly to obtain a mixed solution; 30g water and 30g ethanol are mixed and the pH is adjusted to 5.0 with dilute hydrochloric acid to obtain an acid solution; the acid solution is slowly dripped into the mixed solution, heated to 80℃, kept at the temperature for 8h, aged at standard ambient temperature for 12h, washed with anhydrous ethanol, dried at 60℃ for 6h, and calcined at 550℃ for 2h to obtain titanium dioxide powder.

[0026] Preparation Example 5 The difference from Preparation Example 1 is that in step (3), titanium dioxide modified mica powder is replaced by an equal amount of mica powder. Example of preparation of stain-removing gel

[0027] Silica microspheres were purchased from Hangzhou Ruijiang New Material Technology Co., Ltd., with a particle size of 2 μm; silane coupling agent was purchased from Jinan Luxin Chemical Co., Ltd., model KH-550; hydrogenated polyisobutylene was purchased from Tianmen Hengchang Chemical Co., Ltd., with a purity of 99%; petrolatum was purchased from Nantong Runfeng Petrochemical Co., Ltd., item number 8009-03-8; limonene was purchased from Guangdong Wengjiang Chemical Reagent Co., Ltd., item number WB96041; vitamin E acetate was purchased from Hubei Tuoyuan Fine Chemical Co., Ltd., with a purity of 96%.

[0028] Preparation Example 1 (1) Add 5g of silica microspheres and 0.5g of silane coupling agent to 50g of anhydrous ethanol, ultrasonically disperse for 40min, add 1g of polyethylene glycol-polylactic acid block copolymer, heat to 65℃, stir for 2.5h, wash with alcohol, dry at 60℃ for 8h to obtain hydrophilic modified silica; (2) Mix 20g of hydrogenated polyisobutylene and 8g of petrolatum, heat to 80℃, stir until completely melted, add 12g of limonene and 10g of ethanol, stir for 40min, add 1.5g of aluminum stearate, stir at constant temperature for 1.2h to obtain the gel precursor. (3) Add 5g of hydrophilic modified silica and 0.4g of vitamin E acetate to 10g of the gel precursor obtained in step (2), stir at 65°C for 20min, cool to standard ambient temperature, and obtain a stain-removing gel.

[0029] Preparation Example 2 (1) Add 5g of silica microspheres and 0.5g of silane coupling agent to 50g of anhydrous ethanol, ultrasonically disperse for 40min, add 1g of polyethylene glycol-polylactic acid block copolymer, heat to 60℃, stir for 2h, wash with alcohol, dry at 60℃ for 8h to obtain hydrophilic modified silica. (2) Mix 20g of hydrogenated polyisobutylene and 8g of petrolatum, heat to 70°C, stir until completely melted, add 12g of limonene and 10g of ethanol, stir for 40min, add 1.5g of aluminum stearate, stir at constant temperature for 1h to obtain the gel precursor. (3) Add 3g of hydrophilic modified silica and 0.3g of vitamin E acetate to 10g of the gel precursor obtained in step (2), stir at 60°C for 20min, cool to standard ambient temperature, and obtain a stain-removing gel.

[0030] Preparation Example 3 The difference from Preparation Example 1 is that in step (1), polyethylene glycol-polylactic acid block copolymer was not added.

[0031] Preparation Example 4 The difference from Preparation Example 1 is that in step (2), ethanol is replaced by an equal amount of limonene.

[0032] Preparation Example 5 The difference from Preparation Example 1 is that hydrophilic modified silica was not added in step (3). The specific preparation method is as follows: 0.4g of vitamin E acetate was added to 10g of the gel precursor obtained in step (2), stirred at 65°C for 20min, and cooled to the standard ambient temperature to obtain the cleaning gel. Example

[0033] Carnauba wax was purchased from Wuhan Shuiyixing Pharmaceutical Chemical Co., Ltd., item number 8015-86-9; polypropylene wax was purchased from Zibo Fengcheng Chemical Co., Ltd., with a purity of 100%; paraffin wax was purchased from Hubei Tuobang Chemical Co., Ltd., item number TB0113; silicone oil was purchased from Guangdong Wengjiang Chemical Reagent Co., Ltd., item number DB04355; turpentine oil was purchased from Jiangxi Baolin Natural Fragrance Co., Ltd., item number BL-SJY; styrene-acrylic emulsion was purchased from Hubei Xinfu Biotechnology Co., Ltd., item number 25085-34-1; xanthan gum was purchased from Henan Qiande Pharmaceutical Co., Ltd., with a purity of 98%.

[0034] Example 1: A stain-removing car wax, the raw material amounts are shown in Table 1, the anti-fouling component is prepared by the method in Example 1 of Anti-fouling Component Preparation; the stain-removing gel is prepared by the method in Example 1 of Stain-Removing Gel Preparation; the composite wax is carnauba wax, polypropylene wax and paraffin wax in a mass ratio of 1:0.5:0.2; the composite oil is silicone oil and turpentine oil in a mass ratio of 1:0.3; the emulsion is styrene-acrylic emulsion; the emulsifier is fatty alcohol polyoxyethylene ether; the thickener is xanthan gum.

[0035] The preparation method of the above-mentioned stain-removing car wax includes the following steps: (1) Grind the composite wax into powder, heat it to 60°C until melted, stir and heat to 70°C, add the composite oil, stir for 20 minutes, add the anti-fouling component, heat to 100°C, stir for 30 minutes, cool to 40°C, add the stain remover gel and thickener, stir for 20 minutes to obtain the oil phase; (2) Add the emulsifier and emulsion to water, stir for 40 minutes to emulsify, and obtain the aqueous phase; (3) The oil phase is slowly added dropwise to the aqueous phase at 50°C, stirred for 30 minutes, and ultrasonicated for 5 minutes to remove bubbles, thus obtaining a cleaning car wax.

[0036] Table 1. Raw material dosage of the stain-removing car wax in Examples 1-3 Raw material / g Example 1 Example 2 Example 3 Antifouling components 18 15 14 Stain remover gel 23 20 18 Composite wax 11 10 9 lotion 15 14 13 Compound oil 13 12 10 emulsifier 4 5 3 Thickener 10 9 8 water 8 7 5 Example 2: A stain-removing car wax, the raw material amounts are shown in Table 1, the anti-fouling component is prepared by the method in Example 1 of anti-fouling component preparation; the stain-removing gel is prepared by the method in Example 2 of stain-removing gel preparation; the composite wax is carnauba wax, polypropylene wax and paraffin wax in a mass ratio of 1:0.5:0.1; the composite oil is silicone oil and turpentine oil in a mass ratio of 1:0.1; the emulsion is styrene-acrylic emulsion; the emulsifier is fatty alcohol polyoxyethylene ether; the thickener is xanthan gum.

[0037] The preparation method of the above-mentioned stain-removing car wax includes the following steps: (1) Grind the composite wax into powder, heat it to 60°C until melted, stir and heat it to 80°C, add the composite oil, stir for 20 minutes, add the anti-fouling component, heat it to 90°C, stir for 30 minutes, cool it down to 50°C, add the stain remover gel and thickener, stir for 20 minutes to obtain the oil phase; (2) Add the emulsifier and emulsion to water, stir for 40 minutes to emulsify, and obtain the aqueous phase; (3) The oil phase is slowly added dropwise to the aqueous phase at 40°C, stirred for 30 minutes, and ultrasonicated for 5 minutes to remove bubbles, thus obtaining a cleaning car wax.

[0038] Example 3: A stain-removing car wax, the raw material amounts are shown in Table 1, the anti-fouling component is prepared by the method in Example 2 of anti-fouling component preparation; the stain-removing gel is prepared by the method in Example 2 of stain-removing gel preparation; the composite wax is carnauba wax, polypropylene wax and paraffin wax in a mass ratio of 1:0.5:0.2; the composite oil is silicone oil and turpentine oil in a mass ratio of 1:0.3; the emulsion is styrene-acrylic emulsion; the emulsifier is fatty alcohol polyoxyethylene ether; the thickener is xanthan gum.

[0039] Example 4: A stain-removing car wax, which differs from Example 1 in that the stain-removing gel is prepared using the method described in Example 3 of stain-removing gel preparation.

[0040] Example 5: A stain-removing car wax, which differs from Example 1 in that the stain-removing gel is prepared using the method described in Example 4 of stain-removing gel preparation.

[0041] Example 6: A stain-removing car wax, which differs from Example 1 in that the stain-removing gel is prepared using the method described in Example 5 of the stain-removing gel preparation. Comparative Example

[0042] Comparative Example 1: A stain-removing car wax, which differs from Example 1 in that the anti-fouling component is prepared using the method described in Anti-fouling Component Preparation Example 3.

[0043] Comparative Example 2: A stain-removing car wax, which differs from Example 1 in that the anti-fouling component is prepared using the method described in Anti-fouling Component Preparation Example 4.

[0044] Comparative Example 3: A stain-removing car wax, which differs from Example 1 in that the anti-fouling component is prepared using the method described in Anti-fouling Component Preparation Example 5.

[0045] Comparative Example 4 A stain-removing car wax differs from Example 1 in that the anti-fouling component is replaced by an equal amount of fluoropropyl methyl polysiloxane-modified acrylate. The specific preparation method of fluoropropyl methyl polysiloxane-modified acrylate is as follows: 2g of sodium dodecyl sulfonate and 1.5g of polytrifluoropropyl methylsiloxane are added to 65g of PBS buffer, stirred at standard ambient temperature to form a uniform emulsion, heated to 70°C under a nitrogen atmosphere, kept at this temperature for 15min, 0.3g of potassium persulfate and 2g of methyl acrylate are added, kept at this temperature for 35min until the system turns milky white, 8g of methyl acrylate is added dropwise at a rate of 1.2mL / min, and the reaction is continued at this temperature for 14h, heated to 85°C, kept at this temperature for 1h, cooled to 25°C, the pH is adjusted to 6.5 with dilute hydrochloric acid, filtered through a 200-mesh filter to remove the gel, washed with anhydrous ethanol and water in a 1:1 mass ratio, and vacuum dried at 50°C for 12h to obtain fluoropropyl methyl polysiloxane-modified acrylate.

[0046] Comparative Example 5 A type of car wax for removing dirt, differing from Example 1 in that the anti-fouling component is replaced by an equal amount of titanium dioxide-modified mica powder. The specific preparation method of titanium dioxide-modified mica powder is as follows: 2g of mica powder and 0.02g of sodium hexametaphosphate are added to 85g of deionized water, the pH value of the system is adjusted to 5.5 with dilute hydrochloric acid, ultrasonicated for 30min, 2g of tetrabutyl titanate is added during stirring, the temperature is raised to 80℃, kept at 8h, aged at standard ambient temperature for 12h, washed with anhydrous ethanol, dried at 60℃ for 6h, and calcined at 550℃ for 2h to obtain titanium dioxide-modified mica powder.

[0047] Comparative Example 6 A stain-removing car wax, which differs from Example 1 in that it does not contain anti-fouling components.

[0048] Comparative Example 7 A stain-removing car wax, which differs from Example 1 in that it does not contain stain-removing gel. Performance testing

[0049] The cleaning car wax was prepared according to the methods in the examples and comparative examples, and its performance was tested according to the following methods. The test results are recorded in Table 2.

[0050] 1. Decontamination rate: Take a clean 10cm*10cm ceramic-covered steel plate and weigh it (m0). Coat the steel plate with 0.5g of decontamination wax, let it stand for 2-3 minutes, then wipe it gently in one direction 10 times with a lint-free cloth. After drying for 5 minutes, weigh the total weight and record it as mwax. Clean and dry the steel plate again, weigh it again to confirm the value as m0, and then evenly coat its surface with insect glue-rosin to simulate contaminants. Let it dry at room temperature for 24 hours until the contaminants are completely dry and hardened. Weigh the total weight of the steel plate and contaminants at this time and record it as m1. Coat the contaminated steel plate surface with decontamination car wax, let it stand for 2-3 minutes, wipe it gently in one direction 10 times with a lint-free cloth and lightly polish it to remove the floating gel particles. After drying for 5 minutes, allow the turpentine to evaporate and the wax film to form. Finally, weigh the total weight of the steel plate, residual contaminants and wax film at this time and record it as m2. Decontamination rate = (((m1-m2)+mwax) / (m1-m0))*100%.

[0051] 2. Contact Angle: Take a clean 10cm*10cm ceramic-covered steel plate, coat the steel plate with 0.5g of cleaning wax, let it stand for 2-3 minutes, then wipe it gently 10 times in one direction with a lint-free cloth. After drying for 5 minutes, allow the turpentine to evaporate and the wax film to form. The contact angle is measured using a contact angle measuring instrument. Add 3μL of 25℃ deionized water to the surface of the wax film on the steel plate. After the water droplet stabilizes, measure the static contact angle between the water droplet and the surface of the wax film. Five different test points are selected for each sample for measurement, and the average value is taken as the final contact angle value.

[0052] 3. Contact angle after irradiation: Take the same specification of ceramic-coated steel plate with wax film and dried, place it under a 300W ultraviolet mercury lamp irradiation device, adjust the vertical distance between the lamp tube and the sample to 20cm, and continuously irradiate for 48h under the conditions of room temperature, no obstruction, and uniform light exposure. After irradiation, gently wipe the surface dust of the wax film with a lint-free cloth, add 3μL of 25℃ deionized water under the same test conditions, and measure the static contact angle after the water droplet stabilizes for 3s. Five different test points are selected for each sample for measurement, and the average value is taken as the final contact angle value of the sample after ultraviolet irradiation.

[0053] Table 2. Performance test results of the stain-removing car waxes prepared in the examples and comparative examples. Decontamination rate (%) Contact angle (°) Contact angle after irradiation (°) Example 1 95 125 122 Example 2 94 122 117 Example 3 91 119 118 Example 4 86 124 122 Example 5 82 121 120 Example 6 79 126 123 Comparative Example 1 89 109 102 Comparative Example 2 91 117 99 Comparative Example 3 92 120 94 Comparative Example 4 90 121 70 Comparative Example 5 85 92 91 Comparative Example 6 83 90 65 Comparative Example 7 68 117 115 As shown in Table 2, the car waxes prepared in Examples 1-3 of this application have good cleaning and anti-fouling effects and are UV stable. Compared with Example 1, Example 4 shows a lower cleaning rate, indicating that the lack of polyethylene glycol-polylactic acid block copolymer means that the silica cannot precipitate after adsorbing dirt, resulting in a reduced cleaning effect. Compared with Example 1, Example 5 shows a lower cleaning rate, indicating that the combination of limonene and ethanol has a better penetration and dissolution effect on shellac and resin than using limonene alone. Compared with Example 1, Example 6 shows that the lack of hydrophilic modified silica means that the gel precursor cannot aggregate and precipitate after dissolving dirt, resulting in a significant reduction in cleaning effect.

[0054] Comparing Comparative Example 1 with Example 1, the contact angle decreased. This may be because the acrylate was not modified with fluoropropylmethylpolysiloxane, resulting in a less dense wax film formed by its combination with the composite wax. This reduces the antifouling properties of the cleaning wax, allowing stubborn dirt such as shellac and resin to easily penetrate and be absorbed. Comparative Examples 2-4, compared with Example 1, showed a decrease in contact angle after irradiation. This is mainly due to the inability of mica powder or titanium dioxide alone to achieve a synergistic anti-UV effect between the components, leading to a loose wax film and reduced antifouling performance. The results were significantly reduced. Comparing Example 5 with Example 1, the decontamination rate and contact angle were reduced. This was mainly due to the absence of fluoropropyl methylpolysiloxane-modified acrylate, which weakened the synergistic film-forming effect of the composite wax and fluoropropyl methylpolysiloxane-modified acrylate, and reduced the phase separation effect between the gel particles and the hydrophobic matrix. Comparing Examples 6-7 with Example 1, the antifouling components and decontamination gel were missing. The decontamination wax relied solely on the composite wax and emulsifier for antifouling and decontamination, resulting in a significant decrease in the antifouling and decontamination effects.

[0055] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A stain-removing car wax, characterized in that, The raw materials include the following parts by weight: 14-18 parts of antifouling component, 18-23 parts of stain-removing gel, 9-11 parts of composite wax, 13-15 parts of emulsion, 10-13 parts of composite oil, 3-5 parts of emulsifier, 8-10 parts of thickener, and 5-8 parts of water; the antifouling component includes fluoropropyl methyl polysiloxane modified acrylate and titanium dioxide modified mica powder in a mass ratio of 1:0.2-0.

3.

2. The stain-removing car wax according to claim 1, characterized in that, The preparation method of the fluoropropylmethylpolysiloxane modified acrylate includes the following steps: Sodium dodecyl sulfonate and polytrifluoropropyl methylsiloxane were added to PBS buffer and stirred at standard ambient temperature to form a homogeneous emulsion. Under an inert gas atmosphere, the mixture was heated to 68-70°C and kept at this temperature for 10-15 min. Potassium persulfate and 20% (by weight) of methyl acrylate were added, and the mixture was kept at this temperature for 35-40 min until the system turned milky white. The remaining methyl acrylate was slowly added dropwise, and the reaction was continued at this temperature for 12-14 h. The temperature was then raised to 80-85°C and kept at this temperature for 1-1.5 h. The mixture was cooled, and the pH was adjusted to 6.5-7.0 with dilute hydrochloric acid. The gel was removed by filtration, and the mixture was washed and dried to obtain fluoropropyl methylpolysiloxane-modified acrylate.

3. The stain-removing car wax according to claim 1, characterized in that, The raw materials for the titanium dioxide-modified mica powder include tetrabutyl titanate and mica powder in a mass ratio of 1:1-2. The preparation method of the titanium dioxide-modified mica powder includes the following steps: Mica powder and sodium hexametaphosphate were added to deionized water, and the pH of the system was adjusted to 5.0-5.5 with dilute hydrochloric acid. The mixture was sonicated and stirred. Tetrabutyl titanate was added, the temperature was raised to 80-83℃, and the mixture was kept at that temperature for 6-8 hours. The mixture was then aged, washed, dried, and calcined at standard ambient temperature to obtain titanium dioxide modified mica powder.

4. The stain-removing car wax according to claim 1, characterized in that, The method for preparing the stain-removing gel includes the following steps: (1) Add silica microspheres and silane coupling agent to anhydrous ethanol, disperse by ultrasonication, add polyethylene glycol-polylactic acid block copolymer, heat to 60-65℃, stir for 2-2.5h, wash and dry to obtain hydrophilic modified silica; (2) Mix hydrogenated polyisobutylene and petrolatum, heat to 70-80℃, stir until completely melted, add limonene and ethanol, continue stirring, add aluminum stearate, stir at constant temperature for 1-1.2h to obtain gel precursor; (3) Add hydrophilic modified silica and vitamin E acetate to the gel precursor, stir evenly at 60-65℃, and cool to the standard ambient temperature to obtain the cleaning gel.

5. The stain-removing car wax according to claim 4, characterized in that, The mass ratio of the gel precursor, hydrophilic modified silica, and vitamin E acetate is 10:3-5:0.3-0.

4.

6. The stain-removing car wax according to claim 1, characterized in that, The composite wax comprises carnauba wax, polypropylene wax, and paraffin wax in a mass ratio of 1:0.5:0.1-0.2; the composite oil comprises silicone oil and turpentine oil in a mass ratio of 1:0.1-0.3; and the emulsion is selected from at least one of styrene-acrylic emulsion and pure acrylic emulsion.

7. The stain-removing car wax according to claim 1, characterized in that, The emulsifier is selected from at least one of sodium dodecyl sulfonate, fatty alcohol polyoxyethylene ether, and Tween 80; the thickener is selected from at least one of acrylate copolymer and xanthan gum.

8. The method for preparing the stain-removing car wax according to any one of claims 1-7, characterized in that, Includes the following steps: Grind the composite wax into powder, heat it until melted, stir and heat to 70-80℃, add the composite oil, continue stirring, add the anti-fouling component, heat to 90-100℃, continue stirring, cool to 40-50℃, add the stain-removing gel and thickener, mix evenly to obtain the oil phase; Emulsifier and emulsion are added to water and stirred to emulsify, thus obtaining an aqueous phase; The oil phase is slowly added dropwise to the aqueous phase at 40-50℃, stirred, and ultrasonically defoamed to obtain a cleaning car wax.