A water-repellent automobile cleaning agent and preparation method thereof

Abstract

The invention discloses a water-repellent automobile cleaning agent and a preparation method thereof. The cleaning agent is prepared by mixing amino silicone oil, epoxy-modified silicone oil, hydrogen-containing silicone oil, an emulsifier, a nano material and the like as raw materials, wherein the emulsifier is obtained by mixing ethylene glycol butyl ether and isopropyl alcohol in equal volumes. The cleaning agent obtained by the invention has strong detergency, good water-repellent effect, and will not corrode the vehicle body, and has very good prospects for promotion and application.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile cleaning agents, and in particular relates to a water-repellent automobile cleaning agent and a preparation method thereof. Background Art

[0002] In recent years, the automobile industry has developed rapidly, and the demand for automobile maintenance products has also increased. After a car has been driving or parked outdoors for a long time, a lot of dirt will accumulate on the surface, and at this time, a cleaning agent is needed to clean and maintain the car. The composition of dirt is very complex, including dust, spots, water marks, gum, shellac, lubricating oil, grease, gasoline and diesel, sweat marks, residual polish wax, etc., which has high requirements for the cleaning power of the cleaning agent.

[0003] The development of car cleaning agents can basically be divided into the following three stages:

[0004] 1. Inorganic salts such as sodium phosphate, sodium sulfate, sodium silicate, boric acid, and sodium tripolyphosphate have average detergency and will form scratches due to friction with the glass, affecting the appearance of the car.

[0005] 2. Acidic and alkaline detergents such as citric acid, formic acid, acetic acid, sodium hydroxide, ammonia water, and triethanolamine have better cleaning power than inorganic salts, but long-term use will cause corrosion to wiper metal, car paint, etc.

[0006] 3. Surfactants can disperse dirt in water and encapsulate ordinary oil molecules that are insoluble in water to form a water-soluble emulsion, which has a better decontamination effect. It is currently the most common car cleaning agent.

[0007] Although surfactant-type car cleaning agents have been widely used, there are still varying degrees of corrosiveness problems. On the one hand, they will affect the appearance and service life of the car. On the other hand, if scratches and streaks are left on the glass, it will interfere with the driver's vision and cause great driving safety hazards.

[0008] In addition, the biggest impact of rainy days on drivers is that they interfere with their vision. Especially when it rains heavily, the wipers have limited effect, which brings great safety hazards. Therefore, cleaning agents with water-repellent effect are very necessary. There are also some water-repellent car cleaning agent products on the market, but the use method is relatively complicated and the water-repellent effect is poor, which affects the large-scale promotion and use.

[0009] Patent application CN107653081A discloses a water-repellent automobile windshield cleaning agent, which is made by mixing methanol, sodium polyphosphate, alkylphenol polyoxyethylene ether, ethylene glycol, monobutyl ether, etc. The cleaning agent has average detergency, and its raw materials contain a large amount of sodium polyphosphate, which poses a potential risk to the water environment and affects water quality and ecological balance.

[0010] Patent application CN101041792A discloses a water-repellent automobile windshield cleaning agent, which is prepared by mixing monohydric alcohol, nonionic surfactant, corrosion inhibitor, etc., wherein the nonionic surfactant is a compound of silane copolymer and polyether, and the corrosion inhibitor is one or two of sodium metasilicate, sodium nitrite, borax, triethanolamine, etc. The detergency and water-repellent effects of the patent application are relatively general, and the cleaning effect is not ideal. Summary of the invention

[0011] In view of the shortcomings of the prior art, the object of the present invention is to provide a water-repellent automobile cleaning agent and a preparation method thereof, which has strong detergency, good water-repellent effect, and will not corrode the vehicle body.

[0012] In order to achieve the above object, the present invention adopts the following technical solution:

[0013] A water-repellent automobile cleaning agent is prepared by mixing the following raw materials, measured by weight: 35-45 parts of amino silicone oil, 8-12 parts of epoxy-modified silicone oil, 3-5 parts of hydrogen-containing silicone oil, 10-20 parts of emulsifier, 1-2 parts of nanomaterial, and deionized water supplemented to 100 parts; wherein the emulsifier is obtained by mixing equal volumes of ethylene glycol butyl ether and isopropyl alcohol.

[0014] Preferably, the preparation is prepared by mixing the following raw materials, in parts by weight: 40 parts of amino silicone oil, 10 parts of epoxy-modified silicone oil, 4 parts of hydrogen-containing silicone oil, 15 parts of emulsifier, 1.5 parts of nanomaterial, and deionized water to 100 parts; wherein the emulsifier is obtained by mixing equal volumes of ethylene glycol butyl ether and isopropyl alcohol.

[0015] Preferably, the nano material is prepared by first using nano zinc oxide and methyl silicone oil as raw materials, modifying the surface of nano zinc oxide with silicon dioxide to obtain modified nano zinc oxide, then uniformly mixing the modified nano zinc oxide with fumed silicon dioxide to obtain a premix, and finally modifying the premix using a modifier containing hexamethyldisilazane and 10-enylundecyltrichlorosilane.

[0016] Further preferably, the modified nano zinc oxide is prepared by the following method: firstly, adding nano zinc oxide into a methyl silicone oil n-hexane solution, stirring and mixing, drying, transferring to a muffle furnace, and calcining under oxygen-rich conditions to obtain the modified nano zinc oxide.

[0017] Further preferably, the mass ratio of nano zinc oxide to methyl silicone oil n-hexane solution is 1-2:5, and the mass concentration of methyl silicone oil n-hexane solution is 20-30%; the drying process conditions are: drying at 70-80°C for 6-7 hours; the calcination process conditions are: heating to 500-550°C at 5-7°C / min and keeping warm for 3-4 hours.

[0018] More preferably, the modified nano zinc oxide and the fumed silicon dioxide are mixed in equal amounts.

[0019] Further preferably, the specific method of modification treatment is: first, hexamethyldisilazane, 10-alkenylundecyltrichlorosilane and water are stirred and mixed in a mass ratio of 10:2-3:2-3 to obtain a modifier; then the premix and the modifier are evenly mixed in a mass ratio of 3-4:1, kept warm at 110-120°C for 90-100 minutes, the filter residue is filtered out, washed with anhydrous ethanol, and vacuum dried at 85-95°C to obtain the nanomaterial.

[0020] More preferably, the premix is ​​pretreated before being mixed with the modifier, and the specific method is: treating at 110-120° C. for 2-3 hours.

[0021] The preparation method of the aforementioned water-repellent automobile cleaning agent comprises the following specific steps according to the formula amount:

[0022] (1) firstly add an emulsifier into deionized water, stir evenly, add 1-hydroxyethyl-3-methylimidazolium tetrafluoroborate, stir and disperse evenly to obtain a dispersion;

[0023] (2) stirring and mixing the amino silicone oil, epoxy modified silicone oil and hydrogen silicone oil to obtain a silicone oil mixture;

[0024] (3) Then, the nanomaterial is added to the dispersion, and the mixture is stirred and mixed. Then, 1-carboxymethyl-3-methylimidazole bis(trifluoromethanesulfonyl)imide salt is added, and ultrasonic dispersion treatment is performed. Then, the silicone oil mixture is added, and the mixture is stirred and mixed to obtain the cleaning agent.

[0025] Preferably, the amounts of 1-hydroxyethyl-3-methylimidazolium tetrafluoroborate and 1-carboxymethyl-3-methylimidazolium bistrifluoromethanesulfonyl imide salt are 0.03 to 0.04 times and 0.1 to 0.2 times the mass of the silicone oil mixture, respectively.

[0026] Preferably, the stirring rate is 300-500 r / min; the process conditions of ultrasonic dispersion treatment are: 300-500W ultrasonic dispersion for 15-20 minutes.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention provides a water-repellent automobile cleaning agent and a preparation method thereof. The cleaning agent is prepared by mixing amino silicone oil, epoxy-modified silicone oil, hydrogen-containing silicone oil, an emulsifier, a nanomaterial, etc. as raw materials, wherein the emulsifier is obtained by mixing ethylene glycol butyl ether and isopropyl alcohol in equal volumes. The cleaning agent obtained by the present invention has strong detergency, good water-repellent effect, and will not corrode the vehicle body, and has a very good prospect for promotion and application.

[0029] The nano material is prepared by first using nano zinc oxide and methyl silicone oil as raw materials, modifying the surface of the nano zinc oxide with silicon dioxide to obtain modified nano zinc oxide, then uniformly mixing the modified nano zinc oxide with fumed silicon dioxide to obtain a premix, and finally modifying the premix with a modifier containing hexamethyldisilazane and 10-alkenylundecyltrichlorosilane. The present invention promotes the full mixing of the components in the system through the nano material, further strengthens the detergency, and enhances the water-displacing effect.

[0030] When preparing the cleaning agent, first add the emulsifier to deionized water, stir evenly, add 1-hydroxyethyl-3-methylimidazolium tetrafluoroborate, stir and disperse evenly to obtain a dispersion; then stir and mix amino silicone oil, epoxy modified silicone oil, and hydrogen silicone oil to obtain a silicone oil mixture; then add nanomaterials to the dispersion, stir and mix, then add 1-carboxymethyl-3-methylimidazolium bistrifluoromethanesulfonyl imide salt, ultrasonically disperse, continue to add the silicone oil mixture, stir and mix, and obtain the cleaning agent. Among them, the use and addition timing of the two ionic liquids, 1-hydroxyethyl-3-methylimidazolium tetrafluoroborate and 1-carboxymethyl-3-methylimidazolium bistrifluoromethanesulfonyl imide salt, are very critical, which promotes the full mixing of the components in the system, exerts better detergency, and further enhances the water-repelling effect. DETAILED DESCRIPTION

[0031] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The amino silicone oil involved in the present invention was purchased from Henan Wanshan New Material Technology Co., Ltd., with the product model Claire TP-996; the epoxy modified silicone oil was purchased from Qingdao Baisenmao New Material Co., Ltd., with the product model BSM-204; the hydrogen-containing silicone oil was purchased from Guangzhou Qifeng Chemical Co., Ltd., with the product model MHX-1107.

[0033] Unless otherwise specified, other commodities in the present invention are purchased through market channels.

[0034] Example 1

[0035] A water-repellent automobile cleaning agent is prepared by mixing the following raw materials: 3.5 kg of amino silicone oil, 0.8 kg of epoxy-modified silicone oil, 0.3 kg of hydrogen-containing silicone oil, 1 kg of emulsifier, 0.1 kg of nanomaterial, and deionized water supplemented to 100 kg; wherein the emulsifier is obtained by mixing equal volumes of ethylene glycol butyl ether and isopropyl alcohol.

[0036] Nanomaterials are prepared by the following methods:

[0037] (A) firstly, using nano zinc oxide and methyl silicone oil as raw materials, modifying the surface of nano zinc oxide with silicon dioxide to obtain modified nano zinc oxide;

[0038] (B) then uniformly mixing the modified nano zinc oxide and the fumed silica in equal amounts to obtain a premix;

[0039] (C) Finally, the premix is ​​modified by using a modifier containing hexamethyldisilazane and 10-alkenylundecyltrichlorosilane.

[0040] The specific method of step (A) is as follows: first, add nano zinc oxide to methyl silicone oil n-hexane solution, stir and mix, dry, transfer to a muffle furnace, and calcine under oxygen-rich conditions to obtain. The mass ratio of nano zinc oxide to methyl silicone oil n-hexane solution is 1:5, and the mass concentration of methyl silicone oil n-hexane solution is 20%; the drying process conditions are: drying at 70°C for 6 hours; the calcination process conditions are: heating to 500°C at 5°C / min and keeping warm for 3 hours.

[0041] In step (C), the specific method of modification treatment is: firstly, hexamethyldisilazane, 10-alkenylundecyltrichlorosilane and water are stirred and mixed in a mass ratio of 10:2:2 to obtain a modifier; then, the premix and the modifier are mixed in a mass ratio of 3:1, kept at 110°C for 90 minutes, filtered to obtain the filter residue, washed with anhydrous ethanol, and vacuum dried at 85°C to obtain the nanomaterial. Wherein, the premix is ​​pretreated before mixing with the modifier, and the specific method is: treated at 110°C for 2 hours.

[0042] The preparation method of the aforementioned water-repellent automobile cleaning agent comprises the following specific steps according to the formula amount:

[0043] (1) firstly add an emulsifier into deionized water, stir evenly, add 1-hydroxyethyl-3-methylimidazolium tetrafluoroborate, stir and disperse evenly to obtain a dispersion;

[0044] (2) stirring and mixing the amino silicone oil, epoxy modified silicone oil and hydrogen silicone oil to obtain a silicone oil mixture;

[0045] (3) Then, the nanomaterial is added to the dispersion, and the mixture is stirred and mixed. Then, 1-carboxymethyl-3-methylimidazole bis(trifluoromethanesulfonyl)imide salt is added, and ultrasonic dispersion treatment is performed. Then, the silicone oil mixture is added, and the mixture is stirred and mixed to obtain the cleaning agent.

[0046] The amounts of 1-hydroxyethyl-3-methylimidazolium tetrafluoroborate and 1-carboxymethyl-3-methylimidazolium bistrifluoromethanesulfonyl imide salt used are 0.03 times and 0.1 times the mass of the silicone oil mixture, respectively.

[0047] The stirring rate was 300 r / min; the process conditions of ultrasonic dispersion treatment were: 300 W ultrasonic dispersion for 15 minutes.

[0048] Example 2

[0049] A water-repellent automobile cleaning agent is prepared by mixing the following raw materials: 4.5 kg of amino silicone oil, 1.2 kg of epoxy-modified silicone oil, 0.5 kg of hydrogen-containing silicone oil, 2 kg of emulsifier, 0.2 kg of nanomaterial, and deionized water supplemented to 100 kg; wherein the emulsifier is obtained by mixing equal volumes of ethylene glycol butyl ether and isopropyl alcohol.

[0050] Nanomaterials are prepared by the following methods:

[0051] (A) firstly, using nano zinc oxide and methyl silicone oil as raw materials, modifying the surface of nano zinc oxide with silicon dioxide to obtain modified nano zinc oxide;

[0052] (B) then uniformly mixing the modified nano zinc oxide and the fumed silica in equal amounts to obtain a premix;

[0053] (C) Finally, the premix is ​​modified by using a modifier containing hexamethyldisilazane and 10-alkenylundecyltrichlorosilane.

[0054] The specific method of step (A) is as follows: first, add nano zinc oxide to methyl silicone oil n-hexane solution, stir and mix, dry, transfer to a muffle furnace, and calcine under oxygen-rich conditions to obtain. The mass ratio of nano zinc oxide to methyl silicone oil n-hexane solution is 2:5, and the mass concentration of methyl silicone oil n-hexane solution is 30%; the drying process conditions are: drying at 80°C for 7 hours; the calcination process conditions are: heating to 550°C at 7°C / min and keeping warm for 4 hours.

[0055] In step (C), the specific method of modification treatment is: firstly, hexamethyldisilazane, 10-alkenylundecyltrichlorosilane and water are stirred and mixed in a mass ratio of 10:3:3 to obtain a modifier; then, the premix and the modifier are mixed in a mass ratio of 4:1, kept warm at 120°C for 100 minutes, filtered to obtain the filter residue, washed with anhydrous ethanol, and vacuum dried at 95°C to obtain the nanomaterial. Wherein, the premix is ​​pretreated before mixing with the modifier, and the specific method is: treated at 120°C for 3 hours.

[0056] The preparation method of the aforementioned water-repellent automobile cleaning agent comprises the following specific steps according to the formula amount:

[0057] (1) firstly add an emulsifier into deionized water, stir evenly, add 1-hydroxyethyl-3-methylimidazolium tetrafluoroborate, stir and disperse evenly to obtain a dispersion;

[0058] (2) stirring and mixing the amino silicone oil, epoxy modified silicone oil and hydrogen silicone oil to obtain a silicone oil mixture;

[0059] (3) Then, the nanomaterial is added to the dispersion, and the mixture is stirred and mixed. Then, 1-carboxymethyl-3-methylimidazole bis(trifluoromethanesulfonyl)imide salt is added, and ultrasonic dispersion treatment is performed. Then, the silicone oil mixture is added, and the mixture is stirred and mixed to obtain the cleaning agent.

[0060] The amounts of 1-hydroxyethyl-3-methylimidazolium tetrafluoroborate and 1-carboxymethyl-3-methylimidazolium bistrifluoromethanesulfonyl imide salt used are 0.04 times and 0.2 times the mass of the silicone oil mixture, respectively.

[0061] The stirring rate was 500 r / min; the process conditions for ultrasonic dispersion treatment were: 500 W ultrasonic dispersion for 20 minutes.

[0062] Example 3

[0063] A water-repellent automobile cleaning agent is prepared by mixing the following raw materials: 3.5 kg of amino silicone oil, 1.2 kg of epoxy-modified silicone oil, 0.3 kg of hydrogen-containing silicone oil, 2 kg of emulsifier, 0.1 kg of nanomaterial, and deionized water supplemented to 100 kg; wherein the emulsifier is obtained by mixing equal volumes of ethylene glycol butyl ether and isopropyl alcohol.

[0064] Nanomaterials are prepared by the following methods:

[0065] (A) firstly, using nano zinc oxide and methyl silicone oil as raw materials, modifying the surface of nano zinc oxide with silicon dioxide to obtain modified nano zinc oxide;

[0066] (B) then uniformly mixing the modified nano zinc oxide and the fumed silica in equal amounts to obtain a premix;

[0067] (C) Finally, the premix is ​​modified by using a modifier containing hexamethyldisilazane and 10-alkenylundecyltrichlorosilane.

[0068] The specific method of step (A) is as follows: first, add nano zinc oxide to methyl silicone oil n-hexane solution, stir and mix, dry, transfer to a muffle furnace, and calcine under oxygen-rich conditions to obtain. The mass ratio of nano zinc oxide to methyl silicone oil n-hexane solution is 2:5, and the mass concentration of methyl silicone oil n-hexane solution is 20%; the drying process conditions are: drying at 80°C for 6 hours; the calcination process conditions are: heating to 500°C at 7°C / min and keeping warm for 4 hours.

[0069] In step (C), the specific method of modification treatment is: firstly, hexamethyldisilazane, 10-alkenylundecyltrichlorosilane and water are stirred and mixed in a mass ratio of 10:2:3 to obtain a modifier; then, the premix and the modifier are mixed in a mass ratio of 3:1, kept at 120°C for 90 minutes, filtered to obtain the filter residue, washed with anhydrous ethanol, and vacuum dried at 95°C to obtain the nanomaterial. Wherein, the premix is ​​pretreated before mixing with the modifier, and the specific method is: treated at 110°C for 3 hours.

[0070] The preparation method of the aforementioned water-repellent automobile cleaning agent comprises the following specific steps according to the formula amount:

[0071] (1) firstly add an emulsifier into deionized water, stir evenly, add 1-hydroxyethyl-3-methylimidazolium tetrafluoroborate, stir and disperse evenly to obtain a dispersion;

[0072] (2) stirring and mixing the amino silicone oil, epoxy modified silicone oil and hydrogen silicone oil to obtain a silicone oil mixture;

[0073] (3) Then, the nanomaterial is added to the dispersion, and the mixture is stirred and mixed. Then, 1-carboxymethyl-3-methylimidazole bis(trifluoromethanesulfonyl)imide salt is added, and ultrasonic dispersion treatment is performed. Then, the silicone oil mixture is added, and the mixture is stirred and mixed to obtain the cleaning agent.

[0074] The amounts of 1-hydroxyethyl-3-methylimidazolium tetrafluoroborate and 1-carboxymethyl-3-methylimidazolium bistrifluoromethanesulfonyl imide salt used are 0.03 times and 0.2 times the mass of the silicone oil mixture, respectively.

[0075] The stirring rate was 300 r / min; the process conditions of ultrasonic dispersion treatment were: 500 W ultrasonic dispersion for 15 minutes.

[0076] Example 4

[0077] A water-repellent automobile cleaning agent is prepared by mixing the following raw materials: 4 kg of amino silicone oil, 1 kg of epoxy-modified silicone oil, 0.4 kg of hydrogen-containing silicone oil, 1.5 kg of emulsifier, 0.15 kg of nanomaterial, and deionized water supplemented to 10 kg; wherein the emulsifier is obtained by mixing equal volumes of ethylene glycol butyl ether and isopropyl alcohol.

[0078] Nanomaterials are prepared by the following methods:

[0079] (A) firstly, using nano zinc oxide and methyl silicone oil as raw materials, modifying the surface of nano zinc oxide with silicon dioxide to obtain modified nano zinc oxide;

[0080] (B) then uniformly mixing the modified nano zinc oxide and the fumed silica in equal amounts to obtain a premix;

[0081] (C) Finally, the premix is ​​modified by using a modifier containing hexamethyldisilazane and 10-alkenylundecyltrichlorosilane.

[0082] The specific method of step (A) is as follows: first, add nano zinc oxide to methyl silicone oil n-hexane solution, stir and mix, dry, transfer to a muffle furnace, and calcine under oxygen-rich conditions to obtain. The mass ratio of nano zinc oxide to methyl silicone oil n-hexane solution is 1.5:5, and the mass concentration of methyl silicone oil n-hexane solution is 25%; the drying process conditions are: drying at 75°C for 6.5 hours; the calcination process conditions are: heating to 520°C at 6°C / min and keeping warm for 3.5 hours.

[0083] In step (C), the specific method of modification treatment is: firstly, hexamethyldisilazane, 10-alkenylundecyltrichlorosilane and water are stirred and mixed in a mass ratio of 10:2.5:2.5 to obtain a modifier; then, the premix and the modifier are mixed in a mass ratio of 3.5:1, kept at 115°C for 95 minutes, filtered to obtain the filter residue, washed with anhydrous ethanol, and vacuum dried at 90°C to obtain the nanomaterial. Wherein, the premix is ​​pretreated before mixing with the modifier, and the specific method is: treated at 115°C for 2.5 hours.

[0084] The preparation method of the aforementioned water-repellent automobile cleaning agent comprises the following specific steps according to the formula amount:

[0085] (1) firstly add an emulsifier into deionized water, stir evenly, add 1-hydroxyethyl-3-methylimidazolium tetrafluoroborate, stir and disperse evenly to obtain a dispersion;

[0086] (2) stirring and mixing the amino silicone oil, epoxy modified silicone oil and hydrogen silicone oil to obtain a silicone oil mixture;

[0087] (3) Then, the nanomaterial is added to the dispersion, and the mixture is stirred and mixed. Then, 1-carboxymethyl-3-methylimidazole bis(trifluoromethanesulfonyl)imide salt is added, and ultrasonic dispersion treatment is performed. Then, the silicone oil mixture is added, and the mixture is stirred and mixed to obtain the cleaning agent.

[0088] The amounts of 1-hydroxyethyl-3-methylimidazolium tetrafluoroborate and 1-carboxymethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide salt used are 0.035 times and 0.15 times the mass of the silicone oil mixture, respectively.

[0089] The stirring rate was 400 r / min; the process conditions of ultrasonic dispersion treatment were: 400 W ultrasonic dispersion for 18 minutes.

[0090] Comparative Example 1

[0091] A water-repellent automobile cleaning agent is prepared by mixing the following raw materials: 3.5 kg of amino silicone oil, 0.8 kg of epoxy-modified silicone oil, 0.3 kg of hydrogen-containing silicone oil, 1 kg of emulsifier, and deionized water to make up to 100 kg; wherein the emulsifier is obtained by mixing equal volumes of ethylene glycol butyl ether and isopropyl alcohol.

[0092] The preparation method of the aforementioned water-repellent automobile cleaning agent comprises the following specific steps according to the formula amount:

[0093] (1) firstly add an emulsifier into deionized water, stir evenly, add 1-hydroxyethyl-3-methylimidazolium tetrafluoroborate, stir and disperse evenly to obtain a dispersion;

[0094] (2) stirring and mixing the amino silicone oil, epoxy modified silicone oil and hydrogen silicone oil to obtain a silicone oil mixture;

[0095] (3) Then, 1-carboxymethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide salt is added to the dispersion, and ultrasonic dispersion treatment is performed. Then, the silicone oil mixture is added and stirred to obtain the cleaning agent.

[0096] The amounts of 1-hydroxyethyl-3-methylimidazolium tetrafluoroborate and 1-carboxymethyl-3-methylimidazolium bistrifluoromethanesulfonyl imide salt used are 0.03 times and 0.1 times the mass of the silicone oil mixture, respectively.

[0097] The stirring rate was 300 r / min; the process conditions of ultrasonic dispersion treatment were: 300 W ultrasonic dispersion for 15 minutes.

[0098] Comparative Example 2

[0099] A water-repellent automobile cleaning agent is prepared by mixing the following raw materials: 3.5 kg of amino silicone oil, 0.8 kg of epoxy-modified silicone oil, 0.3 kg of hydrogen-containing silicone oil, 1 kg of emulsifier, 0.1 kg of nanomaterial, and deionized water supplemented to 100 kg; wherein the emulsifier is obtained by mixing equal volumes of ethylene glycol butyl ether and isopropyl alcohol.

[0100] Nanomaterials are prepared by the following methods:

[0101] (A) firstly, using nano zinc oxide and methyl silicone oil as raw materials, modifying the surface of nano zinc oxide with silicon dioxide to obtain modified nano zinc oxide;

[0102] (B) then uniformly mixing the modified nano zinc oxide and the fumed silica in equal amounts to obtain a premix;

[0103] (C) Finally, the premix is ​​modified by using a modifier containing hexamethyldisilazane and 10-alkenylundecyltrichlorosilane.

[0104] The specific method of step (A) is as follows: first, add nano zinc oxide to methyl silicone oil n-hexane solution, stir and mix, dry, transfer to a muffle furnace, and calcine under oxygen-rich conditions to obtain. The mass ratio of nano zinc oxide to methyl silicone oil n-hexane solution is 1:5, and the mass concentration of methyl silicone oil n-hexane solution is 20%; the drying process conditions are: drying at 70°C for 6 hours; the calcination process conditions are: heating to 500°C at 5°C / min and keeping warm for 3 hours.

[0105] In step (C), the specific method of modification treatment is: firstly, hexamethyldisilazane, 10-alkenylundecyltrichlorosilane and water are stirred and mixed in a mass ratio of 10:2:2 to obtain a modifier; then, the premix and the modifier are mixed in a mass ratio of 3:1, kept at 110°C for 90 minutes, filtered to obtain the filter residue, washed with anhydrous ethanol, and vacuum dried at 85°C to obtain the nanomaterial. Wherein, the premix is ​​pretreated before mixing with the modifier, and the specific method is: treated at 110°C for 2 hours.

[0106] The preparation method of the aforementioned water-repellent automobile cleaning agent comprises the following specific steps according to the formula amount:

[0107] (1) first add the emulsifier into deionized water and stir evenly to obtain a dispersion;

[0108] (2) stirring and mixing the amino silicone oil, epoxy modified silicone oil and hydrogen silicone oil to obtain a silicone oil mixture;

[0109] (3) Then, the nanomaterial is added to the dispersion, stirred and mixed, subjected to ultrasonic dispersion treatment, and the silicone oil mixture is added and stirred and mixed to obtain the cleaning agent.

[0110] The stirring rate was 300 r / min; the process conditions of ultrasonic dispersion treatment were: 300 W ultrasonic dispersion for 15 minutes.

[0111] Test example

[0112] With reference to GB / T23436-2009 "Automobile Windshield Washer Fluid", the cleaning agents obtained in Examples 1 to 4 and Comparative Examples 1 and 2 were subjected to relevant tests, including cleaning power, water resistance, and metal corrosion resistance at the lowest use concentration.

[0113] The test results are shown in Table 1.

[0114] Table 1. Comparison of cleaning agent test results

[0115]

[0116]

[0117] It can be seen from Table 1 that the cleaning agents obtained in Examples 1 to 4 have a better degree of clarity of the glass after scraping than the standard solution, have a strong detergency, a good water-repelling effect, and poor metal corrosion.

[0118] In Comparative Example 1, the nanomaterials are omitted, and in Comparative Example 2, 1-hydroxyethyl-3-methylimidazolium tetrafluoroborate and 1-carboxymethyl-3-methylimidazolium bistrifluoromethanesulfonyl imide are omitted when preparing the cleaning agent. The detergency and water-repelling effects of the cleaning agent are significantly deteriorated, and more serious metal corrosion is also caused. This indicates that the addition of nanomaterials and the use of ionic liquids in the preparation process can improve the detergency of the cleaning agent, synergistically improve the water-repelling effect, and play a certain protective role, thereby reducing the corrosiveness.

[0119] The present invention illustrates the technical concept of the present invention through the above-mentioned embodiments, but the present invention is not limited to the above-mentioned embodiments, that is, it does not mean that the present invention must rely on the above-mentioned embodiments to be implemented. Those skilled in the art should understand that any improvement of the present invention, equivalent replacement of individual raw materials of the product of the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

Claims

1. A water-repellent automobile cleaning agent, characterized in that: The preparation method is prepared by mixing the following raw materials in parts by weight: 35-45 parts of amino silicone oil, 8-12 parts of epoxy modified silicone oil, 3-5 parts of hydrogen silicone oil, 10-20 parts of emulsifier, 1-2 parts of nanomaterial, and deionized water to 100 parts. The invention discloses a novel nanomaterial comprising 1-hydroxyethyl-3-methylimidazole tetrafluoroboric acid and 1-carboxymethyl-3-methylimidazole bistrifluoromethanesulfonyl imide salt in an amount of 0.03 to 0.04 times and 0.1 to 0.2 times the mass of the silicone oil mixture, respectively; the silicone oil mixture is obtained by stirring and evenly mixing amino silicone oil, epoxy modified silicone oil and hydrogen-containing silicone oil; the emulsifier is obtained by mixing ethylene glycol butyl ether and isopropanol in equal volumes; the nanomaterial is prepared by first using nano zinc oxide and methyl silicone oil as raw materials, modifying the surface of nano zinc oxide with silicon dioxide to obtain modified nano zinc oxide, then uniformly mixing the modified nano zinc oxide with gas phase silicon dioxide in equal mass to obtain a premix, and finally modifying the premix with a modifier containing hexamethyldisilazane and 10-alkenylundecyltrichlorosilane; the modified nano zinc oxide is prepared by the following method: firstly adding nano zinc oxide to methylsilicon oil, and then mixing the nano zinc oxide with methyldisilazane, and finally modifying the premix. The nano-zinc oxide is prepared by mixing the nano-zinc oxide with the methyl silicone oil n-hexane solution, stirring and mixing, drying, transferring to a muffle furnace, and calcining under oxygen-rich conditions to obtain the nano-zinc oxide; the mass ratio of nano-zinc oxide to the methyl silicone oil n-hexane solution is 1-2:5, and the mass concentration of the methyl silicone oil n-hexane solution is 20-30%; the drying process conditions are: drying at 70-80°C for 6-7 hours; the calcining process conditions are: heating to 500-550°C at 5-7°C / min and keeping warm for 3-4 hours; the modification method is: firstly mixing hexamethyldisilazane, 10-alkenylundecyltrichlorosilane and water in a mass ratio of 10:2-3:2-3 to obtain a modifier, then mixing the premix with the modifier in a mass ratio of 3-4:1, keeping warm at 110-120°C for 90-100 minutes, filtering the filter residue, washing with anhydrous ethanol, and vacuum drying at 85-95°C to obtain the nano-material.

2. A water-repellent automobile cleaning agent according to claim 1, characterized in that: The invention is prepared by mixing the following raw materials in parts by weight: 40 parts of amino silicone oil, 10 parts of epoxy modified silicone oil, 4 parts of hydrogen silicone oil, 15 parts of emulsifier, 1.5 parts of nano material, deionized water supplemented to 100 parts, and 1-hydroxyethyl-3-methylimidazole tetrafluoroboric acid and 1-carboxymethyl-3-methylimidazole bistrifluoromethanesulfonyl imide salt in amounts of 0.03-0.04 times and 0.1-0.2 times the mass of the silicone oil mixture, respectively.

3. The method for preparing the water-repellent automobile cleaning agent according to any one of claims 1 to 2, characterized in that: According to the formula, the specific steps are as follows: (1) firstly add an emulsifier into deionized water, stir evenly, add 1-hydroxyethyl-3-methylimidazolium tetrafluoroborate, stir and disperse evenly to obtain a dispersion; (2) stirring and mixing the amino silicone oil, epoxy modified silicone oil and hydrogen silicone oil to obtain a silicone oil mixture; (3) Then, the nanomaterial is added to the dispersion, and the mixture is stirred and mixed. Then, 1-carboxymethyl-3-methylimidazole bis(trifluoromethanesulfonyl)imide salt is added, and ultrasonic dispersion treatment is performed. Then, the silicone oil mixture is added, and the mixture is stirred and mixed to obtain the cleaning agent.

4. The preparation method according to claim 3, characterized in that: The stirring rate is 300-500 r / min; the process conditions of ultrasonic dispersion treatment are: 300-500W ultrasonic dispersion for 15-20 minutes.

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