A method for preparing silicone emulsion

Abstract

The invention relates to a method for preparing an organosilicon emulsion. The components of the organosilicon emulsion include: a silicone-acrylic copolymer, a wetting agent, a polyether, hydrophobic particles, an alkaline catalyst, an emulsifier and water. By fully grinding and dispersing solid particles and strengthening the synergistic effect between the components, an organosilicon emulsion with good foam control ability and excellent wetting and leveling effects is obtained, and at the same time, the problems of shrinkage cavities or fish eyes will not be generated, and compatibility and functionality are taken into consideration.

Description

Technical Field

[0001] The invention relates to a method for preparing an organosilicon emulsion, and more precisely to a method for preparing an organosilicon emulsion-type auxiliary agent used in coatings and inks, and belongs to the technical field of fine chemical preparations. Background Art

[0002] As a new type of polymer material, silicone has a very flexible main chain and the intermolecular force is much weaker than that of hydrocarbons. Therefore, it has the advantages of low viscosity, weak surface tension, small surface energy and strong film-forming ability compared with hydrocarbons of the same molecular weight.

[0003] Because of the excellent properties mentioned above, silicone has a wide range of applications, including construction, textiles, automobiles, machinery, leather, papermaking, metal processing, inks and coatings. With the development of water-based coatings and ink additives, higher requirements are placed on the performance of silicone products, including good compatibility with the system and good functionality.

[0004] Patent CN 107126729 A provides a method for preparing a silicone emulsion using graphene oxide modified silicone oil, which improves the emulsion's high temperature resistance, acid and alkali resistance, and hydrophilicity; Patent CN108339296A uses vinyl silicone oil, allyl polyether, and sodium allyl sulfonate to mix and copolymerize to prepare a self-dispersible silicone composition; Patent CN108379882A uses polyether-modified hydroxy silicone oil, hydrophilic polyether-modified silicone oil, and dimethyl silicone oil to prepare a water-oil universal silicone defoamer; Patent CN106474776 A uses hyperbranched polyether-modified silicone oil to prepare a silicone emulsion with excellent shear resistance.

[0005] The above patent obtains silicone emulsions with different properties by modifying the main chain of silicone. They are used in systems with high compatibility requirements such as water-based coatings and inks, but do not fully solve the problem of balancing fisheyes, pinholes and functionality.

[0006] Through a large number of experimental studies, the inventors of this patent found that the silicone emulsion prepared using a copolymer of siloxane and acrylic acid or its derivatives, a block wetting agent, a polyether, inorganic particles, an emulsifier and water has good foam control ability for water-based systems, while having excellent wetting and leveling effects, and will not produce shrinkage holes or fisheye problems, taking into account both compatibility and functionality. Summary of the invention

[0007] The purpose of the present invention is to provide a method for preparing an organosilicon emulsion, so as to solve the problem that the compatibility and functionality of organosilicon products prepared by the prior art cannot be taken into account in their application systems. The organosilicon emulsion prepared by the method of this patent has the advantages of good compatibility with the application system and long foam suppression time. The organosilicon emulsion prepared by this patent can be used in the fields of construction, electronics and electrical, textiles, automobiles, machinery, leather, papermaking, metal processing, inks, coatings, etc.

[0008] The raw materials used to prepare the organic silicon emulsion include: silicone-acrylic copolymer, wetting agent, polyether, hydrophobic particles, alkaline catalyst, emulsifier and water.

[0009] 、Silicone-acrylic copolymer A

[0010] The silicone-acrylic copolymer A is copolymerized by vinyl-terminated polysiloxane and acrylic acid or acrylic acid derivatives, and has the following structure:

[0011]

[0012] The subscript a 5~30, subscript b 10~90, subscript c is 5 to 40, the substituent R 1 It is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an amino group, an aminoethyl group or an aminopropyl group.

[0013] The amount of the silicone-acrylic copolymer used is 1-30% of the total mass of the organic silicone emulsion.

[0014] 2. Wetting agent B

[0015] The wetting agent B has the following structure:

[0016]

[0017] (II)

[0018] The subscript d 5~30, x is 1~5, y is 1~5, z is 1 to 10, the substituent R 2 and R 3 For carbon atoms

[0019] It is 1 to 4 alkyl, amino, aminoethyl or aminopropyl.

[0020] The amount of the wetting agent is 1-30% of the total mass of the organosilicon emulsion.

[0021] 3. Polyether C

[0022] The polyether C has the following structural formula:

[0023]

[0024] The subscript e 1~30, f 5~40, R 4 It is a hydrogen atom or an alkyl group having 1 to 20 carbon atoms.

[0025] The amount of the polyether is 1-30% of the total mass of the organosilicon emulsion.

[0026] 4. Inorganic particles D

[0027] The inorganic particles include silicon dioxide, aluminum oxide and magnesium oxide. According to the difference in surface properties, these inorganic particles are divided into hydrophilic particles and hydrophobic particles.

[0028] The inorganic particles refer to a mixture of one or more hydrophilic inorganic particles and hydrophobic inorganic particles, with a mass ratio of 1:0.01 to 0.01:1. The hydrophobic inorganic particles refer to particles having only 1 to 4 hydroxyl groups per square nanometer on the surface.

[0029] The amount of the inorganic particles used is 0.1-2% of the total mass of the organosilicon emulsion.

[0030] 5. Alkaline catalyst E

[0031] The function of the alkaline catalyst is to make the silicone-acrylic copolymer A and the surface hydroxyl groups of the inorganic particles D react under certain reaction conditions.

[0032] The alkaline catalyst includes sodium hydroxide, potassium hydroxide, tetramethylammonium hydroxide and cesium hydroxide, which are mostly used in the form of solution.

[0033] The amount of the alkaline catalyst used is 0.01 to 0.1% of the total mass of the organosilicon emulsion.

[0034] 6. Emulsifier F

[0035] The emulsifier refers to a nonionic surfactant, including nonylphenol polyoxyethylene ether, octylphenol polyoxyethylene ether, lauric acid polyoxyethylene ether, oleic acid polyoxyethylene ether, lauryl alcohol polyoxyethylene ether, octanol polyoxyethylene ether, isooctyl alcohol polyoxyethylene ether, iso-decyl alcohol polyoxyethylene ether, iso-tridecyl alcohol polyoxyethylene ether, hexadecanol polyoxyethylene ether, octadecyl alcohol polyoxyethylene ether, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan monooleate, sorbitan tristearate , sorbitan trioleate, polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan tristearate, polyoxyethylene sorbitan trioleate, castor oil polyoxyethylene ether, polyvinyl alcohol, sodium dodecylbenzene sulfonate, sodium lauryl sulfate, betaine, polyvinyl pyrrolidone, cocamidopropyl hydroxysulfonic acid betaine, and a mixture of one or more thereof, preferably a mixture of multiple mixtures.

[0036] The amount of the emulsifier used is 1-5% of the total mass of the silicone emulsion.

[0037] 7. Water G

[0038] The water is the continuous phase of the oil-in-water emulsion, and the water includes tap water, purified water or ice.

[0039] The amount of water used is 40-90% of the total mass of the organosilicon emulsion.

[0040] Long-term storage of the emulsion requires the addition of a certain amount of preservatives and bactericides and thickeners to the emulsion. Preservatives include benzoic acid, sodium benzoate, sorbic acid, potassium sorbate, and kason; thickeners include polyvinyl alcohol, carbomer, xanthan gum, cellulose ethers, polyacrylates, polyacrylamide, and the like.

[0041] The total mass percentage of all the above substances is 100%.

[0042] The preparation method of the organosilicon emulsion is as follows:

[0043] In the first step, a silicone-acrylic copolymer A, a wetting agent B, an inorganic particle D-1 and an alkaline catalyst E are added to a container at room temperature, and the stirring speed is maintained at 500-2000 rpm at a temperature of 80-150° C. The reaction is carried out for 0.5-4 hours to obtain a composition SC-1;

[0044] The second step is to mix the polyether C and the inorganic particles D-2 at room temperature, and fully grind and shear them with a homogenizer at a temperature of 10-90° C. so that the dispersed particle size of the inorganic particles is less than 1 μm, thereby obtaining a polyether composition SC-2;

[0045] The third step is to add the polyether composition SC-2 obtained in the second step and the emulsifier F to the composition SC-1 obtained in the first step, and disperse for 30 to 120 minutes at a temperature of 20 to 80° C. and a rotation speed of 500 to 2000 rpm;

[0046] The fourth step is to add water G to the mixture obtained in the third step, and disperse it at high speed for 30 to 100 minutes at a temperature of 20 to 80° C. and a rotation speed of 500 to 3000 rpm; then cool it to room temperature, add a thickener and a preservative, and obtain a silicone emulsion. DETAILED DESCRIPTION

[0047] Example 1

[0048] The subscript values ​​of silicone-acrylic copolymer A are shown in Table 1:

[0049]

[0050] Example 2

[0051] The subscript values ​​of wetting agent B are shown in Table 2:

[0052]

[0053] Example 3

[0054] The subscript values ​​of polyether C are shown in Table 3:

[0055]

[0056] Example 4

[0057] In the first step, 10 parts of silicone-acrylic copolymer A-1, 28 parts of wetting agent B-1, 0.2 parts of hydrophobic silica R203 and 0.05 parts of potassium hydroxide were added to a container at room temperature, the temperature was raised to 100° C., the rotation speed was maintained at 1500 rpm, and the reaction was carried out for 2 hours to obtain a composition SC-1;

[0058] The second step is to mix 12 parts of polyether C-1, 0.1 parts of aluminum oxide and 0.2 parts of hydrophilic silica A104 at room temperature, and fully grind and shear them with a homogenizer at a temperature of 60° C. so that the dispersed particle size of silicon dioxide and aluminum oxide is less than 1 μm, thereby obtaining a polyether composition SC-2;

[0059] The third step is to add the polyether composition SC-2 prepared in the second step and 5 parts of isomeric tridecanol polyoxyethylene ether 1307 to the composition SC-1 in the first step, raise the temperature to 60°C, and select a high-speed dispersion of 1000 rpm for 60 minutes;

[0060] Step 4: Add 45 parts of water to the mixture obtained in step 3, and disperse for 80 minutes at 70°C and 3000 rpm. Then cool to room temperature, add 1 part of polyacrylic acid thickener and 0.1 part of p-toluenesulfonic acid, and obtain silicone emulsion E-1.

[0061] Example 5

[0062] In the first step, 15 parts of silicone-acrylic copolymer A-2, 16 parts of wetting agent B-2, 0.05 parts of hydrophobic silica R203 and 0.08 parts of potassium hydroxide were added to a container at room temperature, the temperature was raised to 150° C., and the reaction was carried out at a speed of 1000 rpm for 1 hour to obtain a composition SC-1;

[0063] The second step is to mix 16 parts of polyether C-2, 0.02 parts of hydrophilic silica A220 and 0.03 parts of hydrophobic silica R203 at room temperature, and fully grind and shear them with a homogenizer at a temperature of 80° C. so that the dispersed particle size of silica is less than 1 μm, to obtain a polyether composition SC-2;

[0064] The third step is to add the polyether composition SC-2 obtained in the second step and 3 parts of nonylphenol polyoxyethylene ether NP7 into the composition SC-1 in the first step, and disperse at a high speed of 80° C. and 500 rpm for 100 min;

[0065] In the fourth step, 50 parts of water were added to the composition obtained in the third step, and the mixture was dispersed at a temperature of 50° C. and a rotation speed of 1500 rpm for 90 minutes. The mixture was then cooled to room temperature, and 1 part of a polyacrylic acid thickener and 0.1 part of sodium p-toluenesulfonate were added to obtain the organosilicon emulsion E-2.

[0066] Example 6

[0067] In the first step, 28 parts of silicone-acrylic copolymer A-3, 5 parts of wetting agent B-3, 0.3 parts of hydrophobic silica R947, 0.3 parts of hydrophilic silica A220 and 0.03 parts of cesium hydroxide were added to a container at room temperature, the temperature was raised to 120° C., the speed was maintained at 800 rpm and the reaction was carried out for 3 hours to obtain a composition SC-1;

[0068] Step 2: Under room temperature, 2.4 parts of polyether C-3 and 0.004 parts of aluminum oxide were mixed, and the mixture was fully ground and sheared with a homogenizer at 50° C. so that the dispersed particle size of aluminum oxide was less than 1 μm, thereby obtaining a polyether composition SC-2.

[0069] The third step is to add the polyether composition SC-2 prepared in the second step, 2 parts of nonylphenol polyoxyethylene ether NP9 and 2 parts of isomeric tridecanol polyoxyethylene ether 1303 to the composition SC-1 obtained in the first step, and disperse at a high speed for 100 minutes at a temperature of 50° C. and a rotation speed of 1500 rpm;

[0070] Step 4: add 60 parts of water to the mixture obtained in step 3, and disperse for 100 minutes at 60°C and 1200 rpm. Then cool to room temperature, add 0.5 parts of polyacrylic acid thickener and 0.1 parts of sodium p-toluenesulfonate, and obtain silicone emulsion E-3.

[0071] Example 7

[0072] In the first step, 5 parts of silicone-acrylic copolymer A-4, 4.1 parts of wetting agent B-4, 0.001 parts of hydrophobic silica R203 and 0.05 parts of potassium hydroxide were added to a container at room temperature, the temperature was raised to 100° C., and the reaction was carried out at a speed of 1000 rpm for 1.5 hours to obtain a composition SC-1;

[0073] The second step is to mix 5 parts of polyether C-5 and 0.1 parts of hydrophilic silica A106 at room temperature, and fully grind and shear them with a homogenizer at a temperature of 80° C. so that the dispersed particle size of silica is less than 1 μm, to obtain a polyether composition SC-2;

[0074] The third step is to add the polyether composition SC-2 prepared in the second step and 1 part of isomeric tridecanol polyoxyethylene ether 1308 to the composition SC-1 obtained in the first step, and disperse at a high speed of 60° C. and 500 rpm for 100 min;

[0075] In the fourth step, 85 parts of water were added to the composition obtained in the third step, and the mixture was dispersed at 60°C and 1000 rpm for 80 minutes. The mixture was then cooled to room temperature, and 0.5 parts of carbomer and 0.1 parts of p-toluenesulfonic acid were added to obtain silicone emulsion E-4.

[0076] Example 8

[0077] In the first step, 6 parts of silicone-acrylic copolymer A-5, 10 parts of wetting agent B-5, 0.8 parts of hydrophobic silica R927, 0.2 parts of magnesium oxide and 0.06 parts of tetramethylammonium hydroxide were added into a container at room temperature, the temperature was raised to 90° C., and the reaction was carried out at a speed of 1000 rpm for 0.5 h to obtain a composition SC-1;

[0078] Step 2: Under room temperature, 25 parts of polyether C-5, 0.2 parts of hydrophilic silica B200, and 0.3 parts of hydrophobic silica R813S were mixed, and fully ground and sheared with a homogenizer at a temperature of 70° C. so that the dispersed particle size of silica was less than 1 μm, to obtain a polyether composition SC-2;

[0079] The third step is to add the polyether composition SC-2 prepared in the second step, 2 parts of Span 80 and 1 part of Tween 80 to the mixture SC-1 obtained in the first step, and disperse at high speed for 30 minutes at a temperature of 60° C. and a rotation speed of 1000 rpm;

[0080] Step 4: add 55 parts of water to the mixture obtained in step 3, and disperse for 80 minutes at a temperature of 50°C and a rotation speed of 1000 rpm. Then cool to room temperature, add 0.5 parts of carbomer and 0.1 parts of p-toluenesulfonic acid, and obtain silicone emulsion E-5.

[0081] Comparative Example 1

[0082] In the first step, at room temperature, 20 parts of silicone-acrylic copolymer A-1, 0.2 parts of hydrophobic silica R203 and 0.05 parts of potassium hydroxide were added into a container, the temperature was raised to 120° C., and the speed was maintained at 1000 rpm for 2 hours to obtain a composition SC-1;

[0083] Step 2: Under room temperature, 18 parts of polyether C-6 and 0.3 parts of hydrophilic silica A106 were mixed, and the mixture was fully ground and sheared with a homogenizer at 70° C. so that the dispersed particle size of silica was less than 1 μm, thereby obtaining a polyether composition SC-2;

[0084] The third step is to add the polyether composition SC-2 prepared in the second step and 2 parts of isomeric tridecanol polyoxyethylene ether 1308 to the mixture SC-1 obtained in the first step, and disperse at a high speed of 70° C. and 1500 rpm for 100 min;

[0085] Step 4: add 60 parts of water to the mixture obtained in step 3, and disperse for 80 minutes at a temperature of 50°C and a rotation speed of 1000 rpm. Then cool to room temperature, add 0.5 parts of carbomer and 0.1 parts of p-toluenesulfonic acid, and obtain silicone emulsion CE-1.

[0086] Comparative Example 2

[0087] In the first step, at room temperature, 20 parts of wetting agent B-4, 0.1 parts of hydrophobic silica R203, 0.1 parts of hydrophilic silica A106 and 0.05 parts of potassium hydroxide were added to a container, the temperature was raised to 100° C., the speed was 1000 rpm and the reaction was kept warm for 2 hours to obtain a composition SC-1;

[0088] Step 2: Under room temperature, 20 parts of polyether C-2 and 0.3 parts of hydrophobic silica R813S were mixed, and fully ground and sheared with a homogenizer at a temperature of 70° C. so that the dispersed particle size of the silica was less than 1 μm, to obtain a polyether composition SC-2;

[0089] The third step is to add the polyether composition SC-2 prepared in the second step and 3 parts of fatty alcohol polyoxyethylene ether AEO7 to the composition SC-1 obtained in the first step; and disperse at high speed for 60 minutes at a temperature of 60° C. and a rotation speed of 1000 rpm;

[0090] In the fourth step, 57 parts of water were added to the composition obtained in the third step, and the mixture was dispersed for 100 minutes at a temperature of 60° C. and a rotation speed of 1500 rpm. The mixture was then cooled to room temperature, and 0.5 parts of cellulose ether and 0.1 parts of sodium p-toluenesulfonate were added to obtain silicone emulsion CE-2.

[0091] Comparative Example 3

[0092] In the first step, 30 parts of silicone-acrylic copolymer A-3, 10 parts of wetting agent B-4, 0.2 parts of hydrophobic silica R203, 0.1 parts of hydrophilic silica A220 and 0.05 parts of potassium hydroxide were added to a container at room temperature, the temperature was raised to 120° C., the speed was maintained at 1500 rpm and the reaction was carried out for 1.5 hours to obtain a composition SC-1;

[0093] In the second step, 3 parts of isomeric tridecanol polyoxyethylene ether 1305 were added to the composition SC-1 obtained in the first step, and dispersed at a high speed of 70°C and 1500 rpm for 110 minutes;

[0094] Step 4: Add 57 parts of water to the mixture obtained in step 3, and disperse for 90 minutes at a temperature of 50°C and a rotation speed of 1000 rpm. Then cool to room temperature, add 0.5 parts of polyacrylic acid and 0.1 parts of sodium p-toluenesulfonate, and obtain silicone emulsion CE-3.

[0095] The performance of the silyl ether composition prepared by the method of the present invention is mainly evaluated from the following aspects:

[0096] The patented sample was prepared by diluting the 0.1% aqueous solution of cellulose ether to a solid content of 20% and conducting the following tests.

[0097] , Wettability test:

[0098] 250g of commercially available water-based latex, 50g of deionized water and 0.2g of the sample to be tested were weighed and put into a container, dispersed at a speed of 1500rpm for 10min, and allowed to stand for 1min; a small amount of the above dispersion was dropped on black and white paper, and scraped flat with a 40μm wire rod at a uniform speed, and the state (shrinkage pores) of the dispersion on the black and white paper was observed, expressed as the number of 1mm shrinkage pores per square centimeter of dry film. The results are shown in Table 4.

[0099] 2. Foam control performance:

[0100] Using the air blowing method for testing, 100 g of commercially available water-based latex, 100 g of deionized water and 0.1 g of the sample to be tested were weighed and placed in a 500 mL measuring cylinder. Air was blown into the mixture at a flow rate of 1.5 L / min, and the time for the foam to reach the 500 mL mark was recorded. The longer the time, the better the anti-foaming performance. The results are shown in Table 4.

[0101]

[0102] From the above data, we can see that:

[0103] The samples E-1~E-5 of the patent invention will not produce obvious shrinkage holes in the water-based latex. By comparing E-1 with CE-1, CE-2, and CE-3, it is found that there is a certain synergistic effect between the three components of silicone-acrylic copolymer A and wetting agent B.

[0104] The samples E-1 to E-5 of the patent invention have good foam control ability in water-based latex. By comparing the comparative examples CE-1, CE-2 and CE-3, the foam control ability of CE-1 and CE-2 is poor. The silicone-acrylic copolymer A and wetting agent B in this patent have greatly improved the foam control ability in water-based latex.

Claims

1. A method for preparing an organosilicon emulsion, characterized in that: The components of the organosilicon emulsion include: silicone-acrylic copolymer A, wetting agent B, polyether C, inorganic particles D, alkaline catalyst E, emulsifier F and water G; A, silicone-acrylic copolymer, the silicone-acrylic copolymer A is copolymerized by vinyl-terminated polysiloxane and acrylic acid or acrylic acid derivatives, and has the following structure: The value of subscript a is 5 to 30, the value of subscript b is 10 to 90, the value of subscript c is 5 to 40, and the substituent R 1 The silicone-acrylic copolymer is used in an amount of 1 to 30% of the total mass of the organic silicone emulsion; B. Wetting agent, wherein the wetting agent has the following structure: The value of the subscript d is 5 to 30, the value of x is 1 to 5, the value of y is 1 to 5, the value of z is 1 to 10, and the substituent R 2 and R 3 It is an alkyl group, amino group, aminoethyl group or aminopropyl group having 1 to 4 carbon atoms; the amount of the wetting agent is 1 to 30% of the total mass of the organic silicon emulsion; C, polyether, the polyether C has the following structural formula: R 4 O(CH2CH2O) e (CHCH3CH2O) f H(Ⅲ) The value of subscript e is 1 to 30, the value of f is 5 to 40, and R 4 is a hydrogen atom or an alkyl group having 1 to 20 carbon atoms; the amount of the polyether is 1 to 30% of the total mass of the silicone emulsion; D. Inorganic particles, wherein the inorganic particles are selected from silicon dioxide, aluminum oxide and magnesium oxide, and the amount of the inorganic particles is 0.1 to 2% of the total mass of the organosilicon emulsion; E. an alkaline catalyst, wherein the alkaline catalyst is selected from sodium hydroxide, potassium hydroxide, tetramethylammonium hydroxide, and cesium hydroxide; the amount of the alkaline catalyst is 0.01 to 0.1% of the total mass of the organosilicon emulsion; F. Emulsifier, wherein the emulsifier refers to a nonionic surfactant, and the amount of the emulsifier is 1 to 5% of the total mass of the silicone emulsion; G. Water, wherein the water is the continuous phase of the oil-in-water emulsion, and the amount of the water is 40 to 90% of the total mass of the silicone emulsion; The preservative and bactericide that needs to be added to the emulsion for long-term storage is selected from benzoic acid, sodium benzoate, sorbic acid, potassium sorbate, and kasone; the thickener that needs to be added is selected from polyvinyl alcohol, carbomer, xanthan gum, cellulose ethers, polyacrylates, and polyacrylamide; The sum of the mass percentages of all the above substances is 100%; The preparation method of the organosilicon emulsion is as follows: In the first step, a silicone-acrylic copolymer A, a wetting agent B, an inorganic particle D-1 and an alkaline catalyst E are added to a container at room temperature, and the stirring speed is maintained at 500 to 2000 rpm at a temperature of 80 to 150° C. The reaction is carried out for 0.5 to 4 hours to obtain a composition SC-1; The second step is to mix the polyether C and the inorganic particles D-2 at room temperature, and fully grind and shear them with a homogenizer at a temperature of 10 to 90° C. so that the dispersed particle size of the inorganic particles is less than 1 μm, thereby obtaining a polyether composition SC-2; The third step is to add the polyether composition SC-2 obtained in the second step and the emulsifier F to the composition SC-1 obtained in the first step, and disperse for 30 to 120 minutes at a temperature of 20 to 80° C. and a rotation speed of 500 to 2000 rpm; The fourth step is to add water G to the mixture obtained in the third step, and disperse it at high speed for 30 to 100 minutes at a temperature of 20 to 80° C. and a rotation speed of 500 to 3000 rpm; then cool it to room temperature, add a thickener and a preservative, and obtain a silicone emulsion.

2. The method for preparing an organosilicon emulsion according to claim 1, characterized in that: The inorganic particles are a mixture of hydrophilic inorganic particles and hydrophobic inorganic particles.

3. The method for preparing an organosilicon emulsion according to claim 2, characterized in that: The hydrophobic inorganic particles refer to particles having only 1 to 4 hydroxyl groups per square nanometer on the surface.

4. The method for preparing an organosilicon emulsion according to claim 1, characterized in that: The emulsifier is selected from nonylphenol polyoxyethylene ether, octylphenol polyoxyethylene ether, lauric acid polyoxyethylene ether, oleic acid polyoxyethylene ether, lauryl alcohol polyoxyethylene ether, octanol polyoxyethylene ether, isooctyl alcohol polyoxyethylene ether, iso-decyl alcohol polyoxyethylene ether, iso-tridecyl alcohol polyoxyethylene ether, hexadecanol polyoxyethylene ether, octadecyl alcohol polyoxyethylene ether, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan monooleate, sorbitan tristearate, sorbitan monooleate, sorbitan mono ... A mixture of one or more of sorbitan trioleate, polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan tristearate, polyoxyethylene sorbitan trioleate, castor oil polyoxyethylene ether, polyvinyl alcohol, sodium dodecylbenzene sulfonate, sodium lauryl sulfate, betaine, polyvinyl pyrrolidone, and cocamidopropyl hydroxysulfonic acid betaine.

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