CN118909550A - Emulsion type automobile polishing wax and preparation method thereof - Google Patents

Abstract

The invention relates to the technical field of automobile supplies, and discloses emulsion type automobile polishing wax and a preparation method thereof, wherein epoxy silicone fluorine polyacrylate contains polysiloxane, has stable property, and is not volatilized and solidified even at a high temperature of 200 ℃; the organic fluorine has good hydrophobic property, so that the molecular chain has excellent flexibility, macromolecules in film formation are not easy to migrate, the durability is good, and the water resistance and the excellent hand feeling can be kept for a long time; the epoxy silicone-fluorine polyacrylate contains epoxy groups, can generate chemical reaction with oxidized wax and generate chemical bonding with carboxyl on the surface of the oxidized wax, so that the epoxy silicone-fluorine polyacrylate can stably exist in a paraffin matrix, has good dispersibility and good compatibility with carnauba wax and microcrystalline wax, so that a product forms a firm protective film on the surface of an automobile, the stability is further improved, and the curing time is greatly shortened.

Description

Emulsion type automobile polish wax and preparation method thereof

Technical Field

The invention relates to the technical field of automobile supplies, in particular to an emulsion type automobile polish wax and a preparation method thereof.

Background Art

Cars are used in exposed outdoor environments for a long time and are easily affected by ultraviolet rays, acid rain, wind and sand, salt corrosion, shellac and bird droppings. In addition, their own oxidation will gradually lead to aging and yellowing of the car paint, and even cause the car paint to fall off and the bottom layer to rust in severe cases. Conventional car washing and maintenance may also cause scratches on the paint surface, seriously affecting the appearance of the car. For a long time, people have been using traditional wiping methods to decontaminate and polish the surface of objects, which not only wastes a lot of water resources, but also increases the cost of car washing. Emulsified wax is a wax-containing, water-containing uniform fluid, among which car polish wax is used to keep the vehicle surface bright, protect the vehicle surface and increase the beauty of the vehicle and has been widely used, but there are still problems such as easy oxidation and fading of the paint surface, reduction of surface gloss, and fading of the paint in severe cases.

Car polish is a car beauty agent, and there are three main types on the market: oil-based polish (composed of wax, organic solvents and other auxiliary materials), water-based polish (composed of wax, water and other auxiliary materials) and emulsion polish (composed of wax, emulsifier, organic solvent, water and other auxiliary materials). Among them, oil-based polish has high oiliness, poor adhesion between the oil film and the paint surface, poor gloss effect, and requires a relatively thick wax layer. The wax is often lost due to factors such as rain or washing; the solid component of water-based polish is mainly abrasive fillers, and the natural wax component is relatively small. After use, the hard film retained on the surface of the car paint is thin and has poor durability. In addition, since it is a liquid, the storage and transportation process is inconvenient; solid polish is also used to maintain the car, but the gloss brightness after waxing is average, and the durability is poor, and the hydrophobic performance is poor.

Emulsion-type polish wax has strong adhesion, high film-forming strength, good wear resistance and durability, but it has a long curing time, poor emulsification effect and water and antifouling performance that needs to be further improved, resulting in uneven dispersion of the coating liquid; the car polish wax currently on the market is generally obtained by emulsifying paraffin with low-viscosity silicone oil through one or more emulsifiers, and has the disadvantages of high emulsifier dosage, high production cost and short protection time; therefore, how to improve the traditional emulsion-type car polish wax, such as poor high and low temperature resistance, general gloss brightness after waxing, and poor hydrophobicity, so as to obtain a car polish wax with higher comprehensive performance, is a problem that needs to be solved urgently in its promotion and application to meet the needs of industrial production.

Summary of the invention

The purpose of the present invention is to overcome the shortcomings of the prior art and provide an emulsion-type automobile polish and a preparation method thereof, which solves the shortcomings of the existing traditional automobile polish, such as poor high and low temperature resistance, general gloss brightness after waxing, poor durability, and slow curing time. The present invention has excellent waterproof and anti-fouling effects and is low in price.

To achieve the above object, the technical solution adopted by the present invention is:

An emulsion type automobile polish wax comprises the following components in parts by weight: 2-4 parts of carnauba wax, 1-3 parts of microcrystalline wax, 0.5-2.5 parts of polyacrylate modified paraffin, 1-2 parts of oleic acid, 10-15 parts of mineral oil, 3-6 parts of emulsifier, 1.5-3 parts of triethanolamine, 30-50 parts of deionized water, 3-5 parts of grinding material, 0.8-1.5 parts of sodium carboxymethyl cellulose, 0.2-0.5 parts of benzotriazole and 0.02-0.05 parts of essence.

The preparation method of polyacrylate modified paraffin is as follows: add epoxy silicofluorine polyacrylate and acetone into a reaction flask, stir evenly, add oxidized wax, react in an ultrasonicator at 80-100°C for 3-5h, filter, wash with ethanol, and dry to obtain polyacrylate modified paraffin.

The ratio of epoxy silicone fluorine polyacrylate to oxidized wax is 1g:(0.5-0.8)g.

The power of the ultrasonic instrument is 800-1200kW.

Preferably, the emulsifier is any one of cocamidopropyl betaine, alkylphenol polyoxyethylene ether or sorbitan stearate.

Preferably, the grinding material is any one of nano-alumina, bentonite or diatomaceous earth.

Preferably, the preparation method of epoxy silicon fluoride polyacrylate is:

Step (1), under a nitrogen atmosphere, add sodium 3-allyloxy-2-hydroxy-1-propanesulfonate, sodium hydride and N,N-dimethylformamide to a reaction flask, stir at room temperature for 0.5-2h, add epibromopropane, stir to react, after the reaction is completed, add ethyl acetate and deionized water to extract, concentrate the organic phase, separate by column chromatography, and dry to obtain sodium alkenyl epoxysulfonate.

Step (2), adding ammonium persulfate, sodium dodecylbenzene sulfonate, OP-10 and deionized water to a reaction bottle equipped with a dropping funnel, stirring to dissolve; adding a mixed solution of methyl methacrylate, methacrylic acid, butyl acrylate, sodium alkenyl epoxysulfonate, vinyl fluorinated polysiloxane and ethoxylated trimethylolpropane triacrylate to the dropping funnel, first dripping 1/3 of the mixed solution, reacting at 75-90° C. for 1-3 h, then dripping the remaining mixed solution, continuing to react at the same temperature for 2-4 h, and after the reaction is completed, adding ammonia water to adjust the pH to 7-8, filtering to obtain epoxy silicon fluoride polyacrylate.

Preferably, in step (1), the ratio of sodium 3-allyloxy-2-hydroxy-1-propanesulfonate, sodium hydride and epibromopropane is 1 g:(0.15-0.25) g:(0.9-1.2) g.

Preferably, in step (1), the reaction temperature is 50-70° C. and the reaction time is 8-16 h.

Preferably, in step (2), the ratio of ammonium persulfate, sodium dodecylbenzene sulfonate, OP-10, deionized water, methyl methacrylate, methacrylic acid, butyl acrylate, sodium alkenyl epoxysulfonate, vinyl fluorinated polysiloxane, and ethoxylated trimethylolpropane triacrylate is (3-5) g: (4-6) g: (2-3) g: (10-20) g: (20-30) g: (4-8) g: 100 g: (3-15) g: (1-5) g: (1.3-3) g.

Preferably, the preparation method is: heating carnauba wax, microcrystalline wax and polyacrylate-modified paraffin until melted, adding oleic acid and mineral oil, and mixing evenly to obtain component A; mixing emulsifier, triethanolamine and deionized water evenly to obtain component B; slowly adding component A to component B, stirring the two components until dissolved, adding sodium carboxymethyl cellulose, grinding material, benzotriazole and essence, stirring for 20-40 minutes, cooling, and obtaining emulsion type automobile polish wax.

Preferably, the stirring temperature is 70-90°C and the rotation speed is 800-1000r/min.

By adopting the above technical solution, the beneficial effects of the present invention are:

The invention firstly reacts sodium 3-allyloxy-2-hydroxy-1-propanesulfonate with epibromopropane under the action of sodium hydride to obtain sodium alkenyl epoxysulfonate, then polymerizes with vinyl fluorine-containing polysiloxane and acrylic monomers to obtain epoxy silicon fluorine polyacrylate, then uses epoxy groups on the surface of the polyacrylate to react with carboxyl groups of oxidized wax to obtain polyacrylate modified paraffin, and finally mixes with carnauba wax, microcrystalline wax and the like to obtain emulsion type automobile polishing wax. When the emulsion type automobile polishing wax is used, dust on the paint surface is firstly removed, and then the automobile paint surface is wiped with the polishing wax to remove dirt on the paint surface and form a protective film covering the paint surface.

Epoxy silicon fluoride polyacrylate contains a flexible helical straight-chain polysiloxane structure with stable properties. It does not volatilize or solidify even at a high temperature of 200°C and has a small surface tension. At the same time, organic fluorine has good hydrophobic properties, which makes the molecular chain excellent in flexibility. Its molecular weight is large, and the macromolecules in the film are not easy to migrate, so it has good durability and can maintain waterproofness and excellent feel for a long time. It can form a protective film on the surface of the car, improve the surface gloss and color brightness, and improve waterproofness. Dust on it can also be easily removed from the wax film and its expansibility can be improved.

Epoxy fluorosilicone polyacrylate contains epoxy groups, which can react chemically with oxidized wax and form chemical bonds with the carboxyl groups on the surface of oxidized wax, so that epoxy fluorosilicone polyacrylate can be stably present in the paraffin matrix with good dispersibility and good compatibility with carnauba wax and microcrystalline wax, so that the product can form a firm protective film on the surface of the car, and the stability is further improved; at the same time, epoxy fluorosilicone polyacrylate has certain hydrophilicity and lipophilicity, and can play an emulsifying role between water and oil, greatly shortening the time required for its curing.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention is clearly and completely described below. Obviously, the described embodiments are 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.

Preparation of vinyl fluorinated polysiloxane: 23.4 g of octamethylcyclotetrasiloxane, 49.4 g of trifluoropropyltrimethylcyclotrisiloxane and 27.2 g of tetramethyltetraenylcyclotetrasiloxane were added to a reaction flask, and then placed in a pot and equipped with a condenser, heated to 90°C under a nitrogen atmosphere, magnetically stirred and mixed for 30 minutes, then heated to 110°C, added with a tetramethylammonium hydroxide aqueous solution with a total monomer mass fraction of 0.012% and 0.068 g of a capping agent _H2O , and continued to react for 3 hours. After the reaction was completed, the temperature was raised to 150°C and kept for 2 hours, and the vinyl fluorinated polysiloxane was obtained by reduced pressure distillation.

Preparation of oxidized wax: Weigh 5 g of microcrystalline wax, add it to a reaction flask equipped with a condenser and a thermometer, and slowly heat it in an oil bath. After the microcrystalline wax is completely melted, add 0.026 g of manganese sulfate and 0.3 g of stearic acid, pass oxygen at a flow rate of 80 mL/min, react at 150 ° C for 5 h, and naturally cool to room temperature to obtain oxidized wax.

Example 1

(1) Under a nitrogen atmosphere, 25 g of sodium 3-allyloxy-2-hydroxy-1-propanesulfonate, 5 g of sodium hydride and 300 mL of N,N-dimethylformamide were added to a reaction flask, stirred at room temperature for 1 h, 3 g of epibromopropane was added, reacted at 60° C. for 12 h, ethyl acetate and deionized water were added for extraction, the organic phase was concentrated, and column chromatography was performed for separation. The mobile system was ethyl acetate and n-heptane in a volume ratio of 1:3. After drying, sodium alkenyl epoxysulfonate was obtained.

(2) Add 4 g of ammonium persulfate, 5 g of sodium dodecylbenzene sulfonate, 2.5 g of OP-10 and 15 g of deionized water to a reaction bottle equipped with a dropping funnel, and stir to dissolve; add a mixed solution of 25 g of methyl methacrylate, 6 g of methacrylic acid, 100 g of butyl acrylate, 3 g of sodium alkenyl epoxysulfonate, 1 g of vinyl fluorinated polysiloxane, and 2.5 g of ethoxylated trimethylolpropane triacrylate to the dropping funnel, first drop 1/3 of the mixed solution, react at 85°C for 2 h, then drop the remaining mixed solution, continue to react at the same temperature for 3 h, after the reaction is completed, add ammonia water to adjust the pH to 8, filter, and obtain epoxy silicone fluoride polyacrylate.

(3) Add 30 g of epoxy silicofluoric polyacrylate and 750 mL of acetone into a reaction flask, stir evenly, then add 18 g of oxidized wax, react in an ultrasonicator at a power of 1000 kW and a temperature of 90° C. for 4 h, filter, wash with ethanol, and dry to obtain polyacrylate-modified paraffin wax.

(4) 3 g of carnauba wax, 2 g of microcrystalline wax and 0.5 g of polyacrylate-modified paraffin were heated until melted, 1.5 g of oleic acid and 12 g of mineral oil were added, and the mixture was mixed to obtain component A; 5 g of cocamidopropyl betaine, 2 g of triethanolamine and 40 g of deionized water were mixed to obtain component B; component A was slowly added to component B, and the two components were stirred at a temperature of 80° C. and a rotation speed of 900 r/min until dissolved, 1.2 g of sodium carboxymethyl cellulose, 4 g of nano-alumina, 1.1 g of sodium carboxymethyl cellulose, 0.4 g of benzotriazole and 0.04 g of essence were added, and the mixture was stirred for 30 min. The mixture was cooled to obtain an emulsion type automotive polish.

Example 2

(1) Under a nitrogen atmosphere, 50 g of sodium 3-allyloxy-2-hydroxy-1-propanesulfonate, 7.5 g of sodium hydride and 500 mL of N,N-dimethylformamide were added to a reaction flask, stirred at room temperature for 2 h, 45 g of epibromopropane was added, reacted at 70° C. for 8 h, ethyl acetate and deionized water were added for extraction, the organic phase was concentrated, and column chromatography was performed for separation. The mobile system was ethyl acetate and n-heptane in a volume ratio of 1:3. After drying, sodium alkenyl epoxysulfonate was obtained.

(2) Add 3g of ammonium persulfate, 4g of sodium dodecylbenzene sulfonate, 3g of OP-10 and 20g of deionized water to a reaction bottle equipped with a dropping funnel, and stir to dissolve; add a mixed solution of 20g of methyl methacrylate, 8g of methacrylic acid, 100g of butyl acrylate, 6g of sodium alkenyl epoxysulfonate, 2g of vinyl fluorinated polysiloxane, and 1.5g of ethoxylated trimethylolpropane triacrylate to the dropping funnel, first drop 1/3 of the mixed solution, react at 90°C for 1h, then drop the remaining mixed solution, continue to react at the same temperature for 2h, after the reaction is completed, add ammonia water to adjust the pH to 7, filter, and obtain epoxy silicone fluoride polyacrylate.

(3) Add 40 g of epoxysilicon fluoride polyacrylate and 800 mL of acetone into a reaction flask, stir evenly, then add 20 g of oxidized wax, react in an ultrasonicator at a power of 1200 kW and a temperature of 100° C. for 3 h, filter, wash with ethanol, and dry to obtain polyacrylate-modified paraffin wax.

(4) 2 g of carnauba wax, 3 g of microcrystalline wax and 1 g of polyacrylate-modified paraffin are heated until melted, 2 g of oleic acid and 10 g of mineral oil are added, and the mixture is mixed to obtain component A; 3 g of alkylphenol polyoxyethylene ether, 1.5 g of triethanolamine and 30 g of deionized water are mixed to obtain component B; component A is slowly added to component B, and the two components are stirred at a temperature of 90° C. and a rotation speed of 1000 r/min until dissolved, and 0.8 g of sodium carboxymethyl cellulose, 5 g of bentonite, 0.8 g of sodium carboxymethyl cellulose, 0.2 g of benzotriazole and 0.02 g of essence are added, and the mixture is stirred for 20 min. The mixture is cooled to obtain an emulsion type automotive polish.

Example 3

(1) Under a nitrogen atmosphere, 20 g of sodium 3-allyloxy-2-hydroxy-1-propanesulfonate, 5 g of sodium hydride and 300 mL of N,N-dimethylformamide were added to a reaction flask, stirred at room temperature for 2 h, 24 g of epibromopropane was added, reacted at 50 °C for 16 h, ethyl acetate and deionized water were added for extraction, the organic phase was concentrated, and column chromatography was performed for separation. The mobile system was ethyl acetate and n-heptane in a volume ratio of 1:3. After drying, sodium alkenyl epoxysulfonate was obtained.

(2) Add 5 g of ammonium persulfate, 6 g of sodium dodecylbenzene sulfonate, 3 g of OP-10 and 20 g of deionized water to a reaction bottle equipped with a dropping funnel, and stir to dissolve; add a mixed solution of 30 g of methyl methacrylate, 8 g of methacrylic acid, 100 g of butyl acrylate, 9 g of sodium alkenyl epoxysulfonate, 3 g of vinyl fluorinated polysiloxane, and 3 g of ethoxylated trimethylolpropane triacrylate to the dropping funnel, first drop 1/3 of the mixed solution, react at 75°C for 3 h, then drop the remaining mixed solution, continue to react at the same temperature for 4 h, after the reaction is completed, add ammonia water to adjust the pH to 8, filter, and obtain epoxy silicone fluoride polyacrylate.

(3) Add 15 g of epoxy silicofluorinated polyacrylate and 450 mL of acetone into a reaction flask, stir evenly, then add 12 g of oxidized wax, react in an ultrasonicator at a power of 800 kW and a temperature of 80° C. for 5 h, filter, wash with ethanol, and dry to obtain polyacrylate-modified paraffin wax.

(4) 4 g of carnauba wax, 3 g of microcrystalline wax and 1.5 g of polyacrylate-modified paraffin were heated until melted, 2 g of oleic acid and 15 g of mineral oil were added, and the mixture was mixed to obtain component A; 6 g of sorbitan stearate, 3 g of triethanolamine and 50 g of deionized water were mixed to obtain component B; component A was slowly added to component B, and the two components were stirred at a temperature of 70° C. and a speed of 800 r/min until dissolved, 1.5 g of sodium carboxymethyl cellulose, 5 g of diatomaceous earth, 1.5 g of sodium carboxymethyl cellulose, 0.5 g of benzotriazole and 0.05 g of essence were added, and the mixture was stirred for 40 min. The mixture was cooled to obtain an emulsion type automotive polish.

Example 4

(1) Under a nitrogen atmosphere, 35 g of sodium 3-allyloxy-2-hydroxy-1-propanesulfonate, 6.3 g of sodium hydride and 420 mL of N,N-dimethylformamide were added to a reaction flask, and the mixture was stirred at room temperature for 1.5 h. 39 g of epibromopropane was added, and the mixture was reacted at 65 °C for 12 h. Ethyl acetate and deionized water were added for extraction, and the organic phase was concentrated and separated by column chromatography. The mobile phase was ethyl acetate and n-heptane in a volume ratio of 1:3. After drying, sodium alkenyl epoxysulfonate was obtained.

(2) Add 5 g of ammonium persulfate, 5 g of sodium dodecylbenzene sulfonate, 3 g of OP-10 and 12 g of deionized water to a reaction bottle equipped with a dropping funnel, and stir to dissolve; add a mixed solution of 25 g of methyl methacrylate, 6 g of methacrylic acid, 100 g of butyl acrylate, 12 g of sodium alkenyl epoxysulfonate, 4 g of vinyl fluorinated polysiloxane, and 2.5 g of ethoxylated trimethylolpropane triacrylate to the dropping funnel, first drop 1/3 of the mixed solution, react at 85° C. for 3 h, then drop the remaining mixed solution, continue to react at the same temperature for 3 h, after the reaction is completed, add ammonia water to adjust the pH to 8, filter, and obtain epoxy silicone fluoride polyacrylate.

(3) Add 30 g of epoxy silicofluoric polyacrylate and 650 mL of acetone into a reaction flask, stir evenly, then add 20 g of oxidized wax, react in an ultrasonicator at a power of 1000 kW and a temperature of 90° C. for 5 h, filter, wash with ethanol, and dry to obtain polyacrylate-modified paraffin wax.

(4) 4 g of carnauba wax, 2 g of microcrystalline wax and 2 g of polyacrylate-modified paraffin are heated until melted, 1.5 g of oleic acid and 12 g of mineral oil are added, and the mixture is mixed to obtain component A; 4 g of cocamidopropyl betaine, 2.5 g of triethanolamine and 35 g of deionized water are mixed to obtain component B; component A is slowly added to component B, and the two components are stirred at a temperature of 85° C. and a rotation speed of 900 r/min until dissolved, 1.2 g of sodium carboxymethyl cellulose, 4 g of nano-alumina, 1.3 g of sodium carboxymethyl cellulose, 0.35 g of benzotriazole and 0.05 g of essence are added, and the mixture is stirred for 20 min. The mixture is cooled to obtain an emulsion type automotive polish.

Example 5

(1) Under a nitrogen atmosphere, 18 g of sodium 3-allyloxy-2-hydroxy-1-propanesulfonate, 4 g of sodium hydride and 220 mL of N,N-dimethylformamide were added to a reaction flask, and the mixture was stirred at room temperature for 1.5 h. 20.5 g of epibromopropane was added, and the mixture was reacted at 55° C. for 16 h. Ethyl acetate and deionized water were added for extraction, and the organic phase was concentrated and separated by column chromatography. The mobile phase was ethyl acetate and n-heptane in a volume ratio of 1:3. After drying, sodium alkenyl epoxysulfonate was obtained.

(2) Add 5 g of ammonium persulfate, 4 g of sodium dodecylbenzene sulfonate, 3 g of OP-10 and 20 g of deionized water to a reaction bottle equipped with a dropping funnel, and stir to dissolve; add a mixed solution of 30 g of methyl methacrylate, 4 g of methacrylic acid, 100 g of butyl acrylate, 15 g of sodium alkenyl epoxysulfonate, 5 g of vinyl fluorinated polysiloxane, and 2 g of ethoxylated trimethylolpropane triacrylate to the dropping funnel, first drop 1/3 of the mixed solution, react at 85°C for 2 h, then drop the remaining mixed solution, continue to react at the same temperature for 3 h, after the reaction is completed, add ammonia water to adjust the pH to 8, filter, and obtain epoxy silicone fluoride polyacrylate.

(3) Add 12 g of epoxy silicofluorinated polyacrylate and 300 mL of acetone into a reaction flask, stir evenly, then add 7.8 g of oxidized wax, react in an ultrasonicator at a power of 1000 kW and a temperature of 95° C. for 5 h, filter, wash with ethanol, and dry to obtain polyacrylate-modified paraffin wax.

(4) 4 g of carnauba wax, 1 g of microcrystalline wax and 2.5 g of polyacrylate-modified paraffin are heated until melted, 2 g of oleic acid and 12 g of mineral oil are added, and the mixture is mixed to obtain component A; 5 g of alkylphenol polyoxyethylene ether, 3 g of triethanolamine and 35 g of deionized water are mixed to obtain component B; component A is slowly added to component B, and the two components are stirred at a temperature of 85° C. and a rotation speed of 900 r/min until dissolved, and 1.2 g of sodium carboxymethyl cellulose, 5 g of bentonite, 1 g of sodium carboxymethyl cellulose, 0.5 g of benzotriazole and 0.03 g of essence are added, and the mixture is stirred for 30 min. The mixture is cooled to obtain an emulsion type automotive polish.

Comparative Example 1

(1) Add 4 g of ammonium persulfate, 5 g of sodium dodecylbenzene sulfonate, 2.5 g of OP-10 and 15 g of deionized water to a reaction bottle equipped with a dropping funnel, and stir to dissolve; add a mixed solution of 25 g of methyl methacrylate, 6 g of methacrylic acid, 100 g of butyl acrylate, 1 g of vinyl fluorinated polysiloxane, and 2.5 g of ethoxylated trimethylolpropane triacrylate to the dropping funnel, first drop 1/3 of the mixed solution, react at 85° C. for 2 h, then drop the remaining mixed solution, continue to react at the same temperature for 3 h, after the reaction is completed, add ammonia water to adjust the pH to 8, filter, and obtain silicon fluoride polyacrylate.

(2) Add 30 g of silicofluorinated polyacrylate and 750 mL of acetone into a reaction flask, stir evenly, then add 18 g of oxidized wax, react in an ultrasonicator at a power of 1000 kW and a temperature of 90° C. for 4 h, filter, wash with ethanol, and dry to obtain polyacrylate-modified paraffin wax.

(3) 3 g of carnauba wax, 2 g of microcrystalline wax and 0.5 g of polyacrylate-modified paraffin were heated until melted, 1.5 g of oleic acid and 12 g of mineral oil were added, and the mixture was mixed to obtain component A; 5 g of cocamidopropyl betaine, 2 g of triethanolamine and 40 g of deionized water were mixed to obtain component B; component A was slowly added to component B, and the two components were stirred at a temperature of 80° C. and a rotation speed of 900 r/min until dissolved, 1.2 g of sodium carboxymethyl cellulose, 4 g of nano-alumina, 1.1 g of sodium carboxymethyl cellulose, 0.4 g of benzotriazole and 0.04 g of essence were added, and the mixture was stirred for 30 min. The mixture was cooled to obtain an emulsion type automotive polish.

Comparative Example 2

(1) Add 4 g of ammonium persulfate, 5 g of sodium dodecylbenzene sulfonate, 2.5 g of OP-10 and 15 g of deionized water to a reaction bottle equipped with a dropping funnel, and stir to dissolve; add a mixed solution of 25 g of methyl methacrylate, 6 g of methacrylic acid, 100 g of butyl acrylate, 3 g of sodium alkenyl epoxysulfonate (prepared in Example 1), and 2.5 g of ethoxylated trimethylolpropane triacrylate to the dropping funnel, first drop 1/3 of the mixed solution, react at 85° C. for 2 h, then drop the remaining mixed solution, continue to react at the same temperature for 3 h, after the reaction is completed, add ammonia water to adjust the pH to 8, filter, and obtain epoxy polyacrylate.

(2) Add 30 g of epoxy polyacrylate and 750 mL of acetone into a reaction flask, stir evenly, then add 18 g of oxidized wax, react in an ultrasonicator at a power of 1000 kW and a temperature of 90° C. for 4 h, filter, wash with ethanol, and dry to obtain polyacrylate-modified paraffin.

(3) 3 g of carnauba wax, 2 g of microcrystalline wax and 0.5 g of polyacrylate-modified paraffin were heated until melted, 1.5 g of oleic acid and 12 g of mineral oil were added, and the mixture was mixed to obtain component A; 5 g of cocamidopropyl betaine, 2 g of triethanolamine and 40 g of deionized water were mixed to obtain component B; component A was slowly added to component B, and the two components were stirred at a temperature of 80° C. and a rotation speed of 900 r/min until dissolved, 1.2 g of sodium carboxymethyl cellulose, 4 g of nano-alumina, 1.1 g of sodium carboxymethyl cellulose, 0.4 g of benzotriazole and 0.04 g of essence were added, and the mixture was stirred for 30 min. The mixture was cooled to obtain an emulsion type automotive polish.

Comparative Example 3

Heat 3g of carnauba wax and 2g of microcrystalline wax until they are melted, add 1.5g of oleic acid and 12g of mineral oil, and mix well to obtain component A; mix 5g of cocamidopropyl betaine, 2g of triethanolamine and 40g of deionized water to obtain component B; slowly add component A to component B, stir the two components at a temperature of 80°C and a speed of 900r/min until they are dissolved, add 1.2g of sodium carboxymethyl cellulose, 4g of nano-alumina, 1.1g of sodium carboxymethyl cellulose, 0.4g of benzotriazole and 0.04g of essence, stir for 30min, and cool to obtain an emulsion type automotive polish.

Emulsification performance test: The prepared emulsion type automobile polish wax was transferred to a glass tube and left to stand at room temperature for 30 days to observe whether there was stratification to determine its stability.

Average particle size test: A laser particle size analyzer is used to test the average particle size of emulsion type automobile polish wax particles.

Table 1 Emulsification performance test

Effect observation after 30 days Average particle size (μm) Example 1 No stratification, good stability 0.355 Example 2 No stratification, good stability 0.287 Example 3 No stratification, good stability 0.254 Example 4 No stratification, good stability 0.230 Example 5 No stratification, good stability 0.223 Comparative Example 1 There is a small amount of water layer, and the stability is average 0.532 Comparative Example 2 There is a small amount of water layer, and the stability is average 0.416 Comparative Example 3 There is an obvious water layer and poor stability 1.048

It can be seen from the test results in the above table that the emulsion type automobile polish wax prepared by the present invention has a small particle size, high stability, and no stratification after being placed for 30 days; this is because the prepared polyacrylate modified paraffin contains a sodium alkenyl epoxysulfonate structure, has certain hydrophilicity and lipophilicity, and can play an emulsifying role between water and oil; on the other hand, the epoxy group is chemically bonded with the carboxyl group on the surface of the oxidized wax, so that the epoxy silicon fluoride polyacrylate can be stably present in the paraffin matrix, and has similar compatibility with the carnauba wax and microcrystalline wax in the polish wax, good dispersibility, and is not easy to aggregate; Comparative Example 1 does not contain a sodium sulfonate group, and the emulsification performance is poor; Comparative Example 2 does not contain sodium alkenyl epoxysulfonate, but does not contain a polyacrylate structure, and the dispersibility is general; Comparative Example 3 is an ordinary automobile polish wax, and the comprehensive performance is the worst.

High and low temperature stability test: Refer to GB/T23437-2009 standard to test the high and low temperature stability of the sample.

Gloss test: Refer to GB/T23437-2009 standard to test the gloss increase value of the test sample.

Table 2 Stability and gloss test

It can be seen from the test results in the above table that the emulsion type automobile polish wax prepared by the present invention has stable high and low temperature resistance. After being placed at 50°C and -10°C for 30 days respectively, there is no stratification and discoloration phenomenon, and the glossiness increases significantly. This is because the polyacrylate modified paraffin contains an easily flexible spiral straight-chain polysiloxane structure, which is stable in nature and does not volatilize or solidify even at a high temperature of 200°C, and has a small surface tension; at the same time, organic fluorine has good hydrophobicity, excellent flexibility of the macromolecular chain, and low surface tension. Due to its large molecular weight, the macromolecules are not easy to migrate during film formation, so it has good durability, can maintain waterproofness and excellent hand feel for a long time; a protective film can be formed on the surface of the car, which can improve the surface brightness and color brightness, and can improve waterproofness, and dust attached can be easily removed from the wax film, and its expansibility is improved.

Curing time test: The prepared emulsion type automobile polish wax is sprayed on a PC sheet, and a coating film is formed after curing at 70°C, and the time for complete curing is recorded.

Hardness test: Refer to GB/T6739-1996 standard and use Mitsubishi pencil to test the hardness of each coating.

Water resistance test: Referring to ASTM F 2292-2003 standard, the prepared coating film was immersed in deionized water at 25°C for 48 hours, and its surface condition was observed.

Table 3 Polishing wax coating performance test

Curing time (min) Hardness(H) Water resistance Example 1 45 H No significant changes Example 2 42 2H No significant changes Example 3 38 2H No significant changes Example 4 35 2H No significant changes Example 5 32 2H No significant changes Comparative Example 1 60 H Slightly whitish Comparative Example 2 63 H Slightly whitish Comparative Example 3 95 H Bubbling and whitening

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (9)

1. The emulsion type automobile polishing wax is characterized by comprising the following components in parts by weight: 2-4 parts of carnauba wax, 1-3 parts of microcrystalline wax, 0.5-2.5 parts of polyacrylate modified paraffin, 1-2 parts of oleic acid, 10-15 parts of mineral oil, 3-6 parts of an emulsifying agent, 1.5-3 parts of triethanolamine, 30-50 parts of deionized water, 3-5 parts of an abrasive material, 0.8-1.5 parts of sodium carboxymethyl cellulose, 0.2-0.5 part of benzotriazole and 0.02-0.05 part of essence;

The preparation method of the polyacrylate modified paraffin wax comprises the following steps: adding epoxy silicon fluorine polyacrylate and acetone into a reaction flask, uniformly stirring, adding oxidized wax, reacting for 3-5h in an ultrasonic instrument at 80-100 ℃, filtering, washing with ethanol, and drying to obtain polyacrylate modified paraffin;

the proportion relation of the epoxy silicone fluorinated polyacrylate and the oxidized wax is 1g (0.5-0.8 g);

the power of the ultrasonic instrument is 800-1200kW.

2. The emulsion automotive polishing wax according to claim 1, wherein the emulsifier is any one of cocamidopropyl betaine, alkylphenol ethoxylates, and sorbitan stearate.

3. The emulsion automotive polishing wax of claim 1, wherein the abrasive material is any one of nano alumina, bentonite or diatomaceous earth.

4. The emulsion type automobile polishing wax according to claim 1, wherein the preparation method of the epoxy silicone-fluorine polyacrylate is as follows:

Adding 3-allyloxy-2-hydroxy-1-propane sodium sulfonate, sodium hydride and N, N-dimethylformamide into a reaction flask under the nitrogen atmosphere, stirring for 0.5-2h at room temperature, adding epoxy bromopropane, stirring for reaction, adding ethyl acetate and deionized water for extraction after the reaction is finished, concentrating an organic phase, separating by column chromatography, and drying to obtain alkenyl sodium epoxysulfonate;

step (2), adding ammonium persulfate, sodium dodecyl benzene sulfonate, OP-10 and deionized water into a reaction bottle carrying a dropping funnel, and stirring for dissolution; adding the mixed solution of methyl methacrylate, methacrylic acid, butyl acrylate, alkenyl epoxy sodium sulfonate, vinyl fluorine-containing polysiloxane and ethoxylated trimethylolpropane triacrylate into a dropping funnel after uniform mixing, firstly dripping 1/3 of the mixed solution, reacting for 1-3h at 75-90 ℃, then dripping the rest of the mixed solution at the same temperature, continuing to react for 2-4h, adding ammonia water to adjust the pH value to 7-8 after the reaction is finished, and filtering to obtain the epoxy silicone-fluorine polyacrylate.

5. The emulsion type automotive polishing wax according to claim 4, wherein the ratio of the sodium 3-allyloxy-2-hydroxy-1-propanesulfonate, sodium hydride and epibromohydrin in the step (1) is 1g (0.15-0.25 g) and (0.9-1.2 g.

6. The emulsion type automotive polishing wax according to claim 4, wherein the reaction temperature in the step (1) is 50 to 70 ℃ and the reaction time is 8 to 16 hours.

7. The emulsion type automotive polishing wax according to claim 4, wherein the ratio of ammonium persulfate, sodium dodecylbenzenesulfonate, OP-10, deionized water, methyl methacrylate, methacrylic acid, butyl acrylate, sodium alkenylepoxysulfonate, vinyl fluorine-containing polysiloxane, ethoxylated trimethylolpropane triacrylate in the step (2) is (3-5) g, (4-6) g, (2-3) g, (10-20) g, (20-30) g, (4-8) g:100g (3-15) g, (1-5) g and (1.3-3) g.

8. A process for the preparation of an emulsion automotive polish according to any one of claims 1 to 7, characterized in that it comprises: heating carnauba wax, microcrystalline wax and polyacrylate modified paraffin to melt, adding oleic acid and mineral oil, and uniformly mixing to obtain a component A; uniformly mixing an emulsifier, triethanolamine and deionized water to obtain a component B; slowly adding the component A into the component B, stirring the two components until the two components are dissolved, adding sodium carboxymethyl cellulose, an abrasive material, benzotriazole and essence, stirring for 20-40min, and cooling to obtain the emulsion type automobile polishing wax.

9. The method for preparing an emulsion type automotive polishing wax as claimed in claim 8, wherein the stirring temperature is 70-90 ℃ and the rotation speed is 800-1000r/min.