High-gloss styrene-acrylic silicone emulsion as well as raw material composition, preparation method and application thereof

Abstract

The invention discloses a high-gloss styrene-acrylic silicone emulsion as well as a raw material composition, a preparation method and application thereof. The high-gloss styrene-acrylic silicone emulsion comprises the following components in parts by weight: 1.0-1.5 parts of an emulsifier, 41-50 parts of a monomer, 0.7-2.4 parts of a silane coupling agent and 0.3-0.4 part of an initiator, wherein the emulsifying agent is prepared from 0.8 to 1.4 parts of anionic emulsifying agent, 0.09 to 0.19 part of reactive emulsifying agent and 0 to 0.16 part of nonionic emulsifying agent. The styrene-acrylic silicone emulsion prepared by introducing an organosilicon functional monomer and introducing a Si-O bond to a main chain or a branched chain of a styrene-acrylate copolymer through a high-molecular polymerization process and an emulsion polymerization technology has the characteristics of high gloss, good stain resistance, excellent water white resistance and excellent yellowing resistance.

Description

Technical Field

[0001] The invention belongs to the technical field of water-based acrylic emulsion preparation, and in particular relates to a high-gloss styrene-acrylic silicone emulsion, a raw material composition thereof, a preparation method thereof and an application thereof. Background Art

[0002] In recent years, due to the increasing emphasis on ecological environmental protection, the water-based acrylic coating industry has developed rapidly. Compared with traditional solvent-based coatings, water-based acrylic coatings have the advantages of low price, safe use, and reduced environmental pollution, and have therefore become the main direction of the current development of the coatings industry. Among them, water-based acrylic coatings are a low-pollution or even non-polluting coating.

[0003] According to the current market situation of styrene acrylic emulsion, the demand for styrene acrylic emulsion is mainly concentrated in the construction, furniture manufacturing, packaging, textile, printing and other industries. At present, the common styrene acrylic emulsion on the market has good stability, can be stored for a long time at low temperature, can be constructed at low temperature, and has simple process and low cost. It is used in adhesives and coatings and other fields. However, the gloss, yellowing resistance, stain resistance and weather resistance of this emulsion are poor, which limits its application. Therefore, the modification method of styrene acrylic emulsion has become a research hotspot at home and abroad. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems and provide a high-gloss styrene-acrylic silicone emulsion, a raw material composition thereof, a preparation method thereof and an application thereof. The styrene-acrylic silicone emulsion of the present invention has the characteristics of high gloss, good stain resistance, excellent water whitening resistance and excellent yellowing resistance.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] In one aspect, the present invention provides a raw material composition of a high-gloss styrene-acrylic silicone emulsion, which comprises the following components in parts by weight:

[0007] Emulsifier 1.0-1.5 parts, monomer 41-50 parts, silane coupling agent 0.7-2.4 parts, initiator 0.3-0.4 parts;

[0008] The emulsifier includes 0.8 to 1.4 parts of anionic emulsifier, 0.09 to 0.19 parts of reactive emulsifier and 0 to 0.16 parts of nonionic emulsifier.

[0009] In some embodiments, the monomers include hard monomers, soft monomers and functional monomers; preferably, the weight percentage of the hard monomers is 24 to 30 parts, the weight percentage of the soft monomers is 10 to 20 parts, and the weight percentage of the functional monomers is 1 to 2 parts;

[0010] In some embodiments, the anionic emulsifier is selected from at least one of octylphenol polyoxyethylene ether sodium sulfate, fatty alcohol polyoxyethylene ether sodium sulfate, allyl ether hydroxypropyl sulfonate sodium, and alkyl polyoxyethylene ether sodium sulfate; preferably, the anionic emulsifier is Clariant Emulsogen EPA 1963 or Baolijia BLJ-0260;

[0011] In some embodiments, the nonionic emulsifier is selected from at least one of octylphenol polyoxyethylene ether and alkyl polyoxyethylene ether; preferably, the nonionic emulsifier is Clariant Emulsogen LCN 118;

[0012] In some embodiments, the reactive emulsifier is selected from at least one of allyl ether hydroxypropyl sulfonic acid, sodium allyloxy hydroxypropyl sulfonate, and ammonium allyloxy isomeric alcohol ether sulfate; preferably, the reactive emulsifier is Mergit RE-1 or Solvay SIPOMER COPS-1;

[0013] In some embodiments, the silane coupling agent is selected from at least one of vinyl trimethoxy silane, γ-methacryloxypropyl trimethoxy silane and γ-(2,3-epoxypropyl) propyl trimethoxy silane; preferably, the silane coupling agent is vinyl trimethoxy silane;

[0014] In some embodiments, the initiator is selected from one of potassium persulfate, sodium persulfate, and ammonium persulfate; preferably, the initiator is sodium persulfate.

[0015] In some embodiments, the hard monomer is selected from at least one of methyl methacrylate, styrene, methyl acrylate, and n-butyl methacrylate; preferably, the hard monomer is methyl methacrylate and styrene;

[0016] In some embodiments, the soft monomer is selected from butyl acrylate and / or isooctyl acrylate; preferably, the soft monomer is butyl acrylate and isooctyl acrylate;

[0017] In some embodiments, the functional monomer includes acrylic acid and at least one of hydroxyethyl acrylate, methacrylic acid or acrylamide; preferably, the functional monomer includes acrylic acid and acrylamide.

[0018] In some embodiments, the raw material composition of the high gloss styrene-acrylic silicone emulsion further includes 0.04-0.05 parts of an oxidant and 0.02-0.03 parts of a reducing agent;

[0019] In some embodiments, the raw material composition of the high gloss styrene-acrylic silicone emulsion further includes 0.5 to 0.7 parts of a pH regulator;

[0020] In some embodiments, the raw material composition of the high gloss styrene-acrylic silicone emulsion further includes 47 to 54 parts of deionized water.

[0021] In some embodiments, the oxidant is tert-butyl hydroperoxide or hydrogen peroxide; preferably, the oxidant is tert-butyl hydroperoxide;

[0022] In some embodiments, the reducing agent is one of sodium bisulfite, VC, and bleaching agent; preferably, the reducing agent is sodium bisulfite;

[0023] In some embodiments, the pH adjuster is aqueous ammonia or caustic soda flakes; preferably, the pH adjuster is aqueous ammonia.

[0024] In another aspect, the present invention provides a method for preparing a high-gloss styrene-acrylic silicone emulsion, comprising the following steps:

[0025] (1) mixing deionized water, a portion of an emulsifier, a monomer, and 0 to 0.8 parts of a silane coupling agent to prepare a pre-emulsion;

[0026] (2) mixing deionized water and the remaining emulsifier in a reaction kettle, and then adding a portion of the initiator to prepare a kettle bottom material;

[0027] (3) adding the pre-emulsion and the remaining initiator to the reaction kettle, adding the remaining silane coupling agent after 1 to 1.5 hours of dropping, and then performing a heat preservation reaction, and then continuing to drop, and performing a second heat preservation reaction after the drop addition is completed;

[0028] (4) cooling after the reaction is completed and performing post-treatment to obtain the high-gloss styrene-acrylic silicone emulsion.

[0029] In step (1), the weight proportion of the deionized water is 27 to 34 parts;

[0030] In step (1), the weight proportion of the partial emulsifier is 0.4 to 1.2 parts;

[0031] In step (2), the weight parts of the deionized water are 16 to 18 parts;

[0032] In step (2), the mixing temperature is 82 to 90° C.;

[0033] In step (2), the amount of the partial initiator is 15 to 30% of the total amount of the initiator;

[0034] In step (3), the dropping time is 2.5 to 4.5 hours;

[0035] In step (3), the temperature of the dropping is 80 to 90° C.;

[0036] In step (3), the time of the first heat preservation reaction is 0.5 to 1 h;

[0037] In step (3), the temperature of the first insulation reaction is 80-90° C.;

[0038] In step (3), the secondary heat preservation reaction time is 1 to 2 hours;

[0039] In step (3), the temperature of the secondary insulation reaction is 80-90° C.;

[0040] In step (4), the cooling temperature is 70-80°C;

[0041] In step (4), the post-treatment includes: adding an oxidizing agent and a reducing agent, cooling to below 50° C., adding a pH adjusting agent to adjust the pH to 7-8, discharging the material, and filtering.

[0042] In step (2) and step (3), the initiator is added in the form of an aqueous solution; preferably, the initiator is dissolved in 1.3 to 1.6 parts of deionized water to obtain an initiator solution;

[0043] In step (3), the dropping speed is 0.5 times in the first 30 minutes, then the dropping speed is 1 times for 1 hour, and finally the dropping is completed at 1.5 times the speed.

[0044] The third aspect of the present invention further provides a high-gloss styrene-acrylic silicone emulsion, which is prepared by the above-mentioned preparation method of the high-gloss styrene-acrylic silicone emulsion.

[0045] The fourth aspect of the present invention also provides a use of the above-mentioned high-gloss styrene-acrylic silicone emulsion in building materials.

[0046] The reagents and raw materials used in the present invention are commercially available.

[0047] The positive and progressive effects of the present invention are:

[0048] 1. The present invention uses a polymer polymerization process and emulsion polymerization technology to introduce organic silicon functional monomers and introduce Si-O bonds on the main chain or side chain of styrene and acrylate copolymers. The bond energy of the Si-O bond of the main chain of organic silicon is much higher than that of CO bond and CC bond, and the bond length is long, and the arrangement regularity of the side group methyl is high, so it has the advantages of good water resistance and weather resistance. It can be used to modify styrene-acrylic emulsion, and the advantages of the two can be combined to develop a styrene-acrylic silicone emulsion with high gloss, good stain resistance, excellent water whitening resistance, and excellent yellowing resistance.

[0049] 2. The water resistance, yellowing resistance and stain resistance of the high-gloss styrene-acrylic silicone emulsion prepared by the present invention are greatly improved compared with the prior art, and it is green and environmentally friendly, simple and convenient to use, and durable in storage. DETAILED DESCRIPTION

[0050] The present invention is described in detail below in conjunction with the embodiments, and the technical scheme of the present invention is clearly and completely described to facilitate the understanding of the present invention by those skilled in the art. The described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. At the same time, the raw materials mentioned below that are not described in detail are all commercially available products; the process steps or preparation methods not mentioned in detail are process steps or preparation methods known to those skilled in the art.

[0051] Example 1

[0052] This embodiment prepares a high-gloss styrene-acrylic silicone emulsion. The types and qualities of the components in the raw materials are shown in Table 1. The specific preparation steps are as follows:

[0053] (1) Preparation of pre-emulsion: 820 g of deionized water, 20.4 g of EPA 1963 emulsifier, and 2.6 g of RE-1 emulsifier were weighed into an emulsifier tank and stirred. After stirring for 30 minutes, 20 g of acrylic acid, 28 g of acrylamide, 648 g of methyl methacrylate, 140 g of styrene, 294 g of butyl acrylate, and 220 g of isooctyl acrylate were added in sequence and stirred evenly to obtain a pre-emulsion.

[0054] (2) Preparation of bottom solution: 450 g of deionized water and 14 g of EPA 1963 emulsifier were weighed into a reaction kettle, stirred, and heated to 84° C. When the temperature of the reaction kettle rose to 84° C. and stabilized, 22 g of sodium persulfate solution (2 g of sodium persulfate was dissolved in 20 g of water) was added to the reaction kettle to obtain the prepared bottom solution.

[0055] (3) Polymerization reaction: The reaction temperature was controlled at 84-86°C, and 26.8 g of the pre-emulsified liquid and the initiator sodium persulfate solution (6.8 g of sodium persulfate was dissolved in 20 g of water) were uniformly added to the reactor, and the addition time was controlled to be 3.5 h. After 1.5 h of addition, the addition was stopped, and 20 g of silane coupling agent A171 was added to the emulsification tank, and the addition was continued after stirring for 30 min.

[0056] (4) After the addition is completed, the reaction is kept warm for 1.5 hours at a temperature of 84-86°C. After the heat preservation is completed, the temperature is lowered to 75°C and 21.2g of tert-butyl hydroperoxide solution (1.2g of tert-butyl hydroperoxide is dissolved in 20g of water) is added. After the heat preservation is continued for 20 minutes, 20.6g of sodium bisulfite solution (0.6g of sodium bisulfite is dissolved in 20g of water) is added and the temperature is kept for another 20 minutes.

[0057] (5) After the heat preservation is completed, the temperature is lowered to below 50° C., the pH is adjusted to 7-8 with 17 g of ammonia water, and the material is filtered through a 200-mesh filter cloth to obtain a high-gloss styrene-acrylic silicone emulsion.

[0058] Example 2

[0059] Example 2 adopts the steps of Example 1 and the parameters shown in Table 1, wherein the dropping temperature is 86-88° C., 20 g of silane coupling agent A171 is first added when preparing the pre-emulsion, and the dropping is stopped after 1.5 hours of dropping, and the remaining 20 g of silane coupling agent A171 is added to the emulsification tank, and the dropping is continued after stirring for 30 minutes.

[0060] Example 3

[0061] Example 3 adopts the steps of Example 1 and the parameters shown in Table 1, wherein the dropping temperature is 88-90° C., the time for uniformly dropping the pre-emulsion is changed to 2.5 h, 20 g of silane coupling agent A171 is first added when preparing the pre-emulsion, and the dropping is stopped after 1 h, and the remaining 40 g of silane coupling agent A171 is added to the emulsification tank, and the dropping is continued after stirring for 30 min.

[0062] Example 4

[0063] Example 4 adopts the steps of Example 1 and the parameters shown in Table 1, wherein 20 g of silane coupling agent A171 is first added when preparing the pre-emulsion, and the dripping is stopped after 1.5 hours of dripping, and the remaining 40 g of silane coupling agent A171 is added to the emulsification tank, and the dripping is continued after stirring for 30 minutes.

[0064] Example 5

[0065] Example 5 adopts the steps of Example 1 and the parameters shown in Table 1, wherein the dropping temperature is 82-84° C., the time for uniformly dropping the pre-emulsion is 4.5 hours, and the silane coupling agent A171 is added to the emulsification tank and stirred for 1 hour before continuing to drop.

[0066] Example 6

[0067] Example 6 adopts the steps of Example 1 and the parameters shown in Table 1, wherein the dropping speed is controlled to 0.5 times of the uniform dropping speed 30 minutes before the start of dropping, then the dropping is continued at 1 times the speed for one hour, and finally the dropping is completed at 1.5 times the speed.

[0068] Example 7

[0069] Example 7 adopts the steps of Example 1 and the parameters shown in Table 1, wherein the dropping temperature is 86-88°C.

[0070] Example 8

[0071] Example 8 adopts the steps of Example 1 and the parameters shown in Table 1, wherein 10 g of silane coupling agent A171 is first added when preparing the pre-emulsion, and the dripping is stopped after 1.5 hours of dripping, and the remaining 20 g of silane coupling agent A171 is added to the emulsification tank, and the dripping is continued after stirring for 30 minutes.

[0072] Table 1 Specific formula components of raw materials used in Examples 1 to 8 (unit: g)

[0073]

[0074]

[0075] The present invention also provides the following comparative examples.

[0076] Comparative Example 1

[0077] Taking Example 1 as a reference, the silane coupling agent was added in the post-treatment stage, and the rest was the same as Example 1.

[0078] Comparative Example 2

[0079] Taking Example 1 as a reference, no silane coupling agent was added, and the rest was the same as Example 1.

[0080] Comparative Example 3

[0081] Taking Example 1 as a reference, the dropping was stopped after 1.5 hours, and the silane coupling agent A171 was added to the emulsifying tank and then continued to be dropped without keeping warm. The rest was the same as Example 1.

[0082] Comparative Example 4

[0083] Taking Example 1 as a reference, all the emulsifiers were added when preparing the pre-emulsion, and the rest were the same as Example 1.

[0084] Comparative Example 5

[0085] Taking Example 1 as a reference, all acrylic acid in step (1) was replaced by methacrylic acid, and the rest was the same as Example 1.

[0086] Product performance testing

[0087] The products prepared in the examples and comparative examples were tested, and the test standards or methods were as follows:

[0088] 1. Emulsion solid content: Determined according to GB / T20623-2008.

[0089] 2. Viscosity test: using BROOKFIELD DV2T 25℃, 63#, 30rpm.

[0090] 3. Particle size test: Malvern particle size tester is used.

[0091] 4. Gloss test: The emulsion is used to prepare latex paint. The specific formula of the latex paint is shown in Table 2. The film is scraped on black and white cardboard with a 150μm wet film preparation device. After drying at room temperature, it is tested with a gloss tester at 20℃ and 60° angle. The gloss at 60° angle is ≥85.

[0092] 5. Anti-fouling test: The emulsion is used to prepare latex paint. The specific formula of the latex paint is shown in Table 2. First, use a 120μm wire rod applicator to scrape the non-asbestos cement flat plate, and then use an 80μm wire rod applicator to scrape the plate after 6 hours. After 7 days of normal temperature curing, use a soft brush to evenly apply the pollution source suspension on the coating surface, put it in a 60℃ oven for 30 minutes, take it out and place it under standard conditions for 2 hours, then place it on the flushing device, open the valve of the device filled with 15L water to the maximum, and evenly rinse the coating test plate. After rinsing for 1 minute, close the valve, place the test plate under standard conditions for 24 hours, and repeat the flushing and placement process. After the end, test the reflection coefficient and calculate it.

[0093] 6. Water-whitening resistance test: Scrape the emulsion with a 100μm wire rod and maintain it in a constant temperature and humidity room for one day. Test the water resistance of the varnish film. If it cannot be rubbed off by hand for 7 days and the film does not turn white due to water, the test result is passed.

[0094] 7. Yellowing resistance test: After the scraped film is cured at room temperature for 7 days, take it out and put it under xenon light for 600 hours. If no yellowing occurs, the test result is passed.

[0095] Table 2 Specific formula components of raw materials used in the preparation of latex paint (unit: g)

[0096] Components specific ingredients Weight(g) water Deionized water 230 Fungicides Rohm and Haas LXE 1.5 antifreeze Ethylene glycol 10 Film-forming aids Eastman alcohol ester 12 56 Multifunctional Conditioner Dow AMP-95 1.5 Lotion Example / Comparative Example Emulsion 700 Thickener Rohm and Haas Alesun RM-8W 1

[0097] The performance of the products obtained in Examples 1 to 8 was tested, and the specific test results are shown in Table 3.

[0098] Table 3 Performance test results of Examples 1 to 8

[0099]

[0100]

[0101] The performance tests were performed on the products obtained in Comparative Examples 1 to 5, and the specific test results are shown in Table 4.

[0102] Table 4 Performance test results of comparative examples 1 to 5

[0103] Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Solid content / % 47.3％ 46.8％ 47.2％ 47.0％ 47.5％ Viscosity / mPa.s 1984 2541 2105 1597 1172 Particle size / nm 116 148 98 120 105 luster pass pass pass Not passed Not passed Stain resistance pass Not passed pass pass Not passed Water whitening resistance Not passed Not passed Not passed Not passed Not passed Yellowing resistance Not passed Not passed Not passed Not passed Not passed

[0104] It can be seen from Table 3 that the high stain resistance styrene-acrylic silicone emulsion obtained in the embodiment of the present invention has the characteristics of good stain resistance, excellent water whitening resistance, and excellent yellowing resistance.

[0105] As shown in Table 4, the product obtained in the comparative example is not as good as that in the embodiment, wherein:

[0106] In Comparative Example 1, the silane coupling agent was added in the post-treatment stage, and the water whitening resistance and yellowing resistance became worse.

[0107] In Comparative Example 2, no silane coupling agent was added, and the stain resistance, water whitening resistance and yellowing resistance were deteriorated.

[0108] In Comparative Example 3, the silane coupling agent was added dropwise without heat preservation, and the water whitening resistance and yellowing resistance became worse.

[0109] In Comparative Example 4, all the emulsifiers were added when preparing the pre-emulsion, and the gloss, water whitening resistance and yellowing resistance became worse.

[0110] In Comparative Example 5, all acrylic acid was replaced, and the gloss, stain resistance, water whitening resistance and yellowing resistance were deteriorated.

[0111] Finally, it should be noted that in the present invention, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0112] Although the present disclosure has been disclosed above through the description of the specific embodiments of the present disclosure, it should be understood that those skilled in the art can design various modifications, improvements or equivalents to the present disclosure within the spirit and scope of the attached scheme. These modifications, improvements or equivalents should also be considered to be included in the scope of protection claimed by the present disclosure.

Claims

1. A raw material composition of a high gloss styrene-acrylic silicone emulsion, characterized in that: It includes the following components in parts by weight: Emulsifier 1.0-1.5 parts, monomer 41-50 parts, silane coupling agent 0.7-2.4 parts, initiator 0.3-0.4 parts; The emulsifier includes 0.8 to 1.4 parts of anionic emulsifier, 0.09 to 0.19 parts of reactive emulsifier and 0 to 0.16 parts of nonionic emulsifier.

2. The raw material composition of high gloss styrene-acrylic silicone emulsion according to claim 1, characterized in that: The monomers include hard monomers, soft monomers and functional monomers; preferably, the weight proportion of the hard monomers is 24 to 30 parts, the weight proportion of the soft monomers is 10 to 20 parts, and the weight proportion of the functional monomers is 1 to 2 parts; And / or, the anionic emulsifier is selected from at least one of octylphenol polyoxyethylene ether sodium sulfate, fatty alcohol polyoxyethylene ether sodium sulfate, allyl ether hydroxypropyl sulfonate sodium, and alkyl polyoxyethylene ether sodium sulfate; preferably, the anionic emulsifier is Clariant Emulsogen EPA 1963 or Baolijia BLJ-0260; And / or, the nonionic emulsifier is selected from at least one of octylphenol polyoxyethylene ether and alkyl polyoxyethylene ether; preferably, the nonionic emulsifier is Clariant Emulsogen LCN 118; And / or, the reactive emulsifier is selected from at least one of allyl ether hydroxypropyl sulfonic acid, sodium allyloxy hydroxypropyl sulfonate, and allyloxy isomeric alcohol ether sulfate ammonium salt; preferably, the reactive emulsifier is Mergit RE-1 or Solvay SIPOMER COPS-1; And / or, the silane coupling agent is selected from at least one of vinyl trimethoxy silane, γ-methacryloxypropyl trimethoxy silane and γ-(2,3-epoxypropyl) propyl trimethoxy silane; preferably, the silane coupling agent is vinyl trimethoxy silane; And / or, the initiator is selected from one of potassium persulfate, sodium persulfate and ammonium persulfate; preferably, the initiator is sodium persulfate.

3. The raw material composition of high gloss styrene-acrylic silicone emulsion according to claim 2, characterized in that: The hard monomer is selected from at least one of methyl methacrylate, styrene, methyl acrylate and n-butyl methacrylate; preferably, the hard monomer is methyl methacrylate and styrene; And / or, the soft monomer is selected from butyl acrylate and / or isooctyl acrylate; preferably, the soft monomer is butyl acrylate and isooctyl acrylate; And / or, the functional monomer includes acrylic acid and at least one of hydroxyethyl acrylate, methacrylic acid or acrylamide; preferably, the functional monomer includes acrylic acid and acrylamide.

4. The raw material composition of high gloss styrene-acrylic silicone emulsion according to claim 1, characterized in that: The raw material composition of the high gloss styrene-acrylic silicone emulsion also includes 0.04-0.05 parts of an oxidant and 0.02-0.03 parts of a reducing agent; And / or, the raw material composition of the high gloss styrene-acrylic silicone emulsion further comprises 0.5 to 0.7 parts of a pH regulator; And / or, the raw material composition of the high gloss styrene-acrylic silicone emulsion also includes 47 to 54 parts of deionized water.

5. The raw material composition of high gloss styrene-acrylic silicone emulsion according to claim 4, characterized in that: The oxidant is tert-butyl hydroperoxide or hydrogen peroxide; preferably, the oxidant is tert-butyl hydroperoxide; And / or, the reducing agent is one of sodium bisulfite, VC, and bleaching agent; preferably, the reducing agent is sodium bisulfite; And / or, the pH adjuster is ammonia water or caustic soda flakes; preferably, the pH adjuster is ammonia water.

6. A method for preparing a high-gloss styrene-acrylic silicone emulsion, characterized in that: The raw materials of the high-gloss styrene-acrylic silicone emulsion include the raw material composition of the high-gloss styrene-acrylic silicone emulsion according to any one of claims 1 to 5, and the method includes the following steps: (1) mixing deionized water, a portion of an emulsifier, a monomer, and 0 to 0.8 parts of a silane coupling agent to prepare a pre-emulsion; (2) mixing deionized water and the remaining emulsifier in a reaction kettle, and then adding a portion of the initiator to prepare a kettle bottom material; (3) adding the pre-emulsion and the remaining initiator to the reaction kettle, adding the remaining silane coupling agent after 1 to 1.5 hours of dropping, and then performing a heat preservation reaction, and then continuing to drop, and performing a second heat preservation reaction after the drop addition is completed; (4) cooling after the reaction is completed and performing post-treatment to obtain the high-gloss styrene-acrylic silicone emulsion.

7. The method for preparing the high gloss styrene-acrylic silicone emulsion according to claim 6, characterized in that: The preparation method satisfies at least one of the following conditions: In step (1), the weight proportion of the deionized water is 27 to 34 parts; In step (1), the weight proportion of the partial emulsifier is 0.4 to 1.2 parts; In step (2), the weight parts of the deionized water are 16 to 18 parts; In step (2), the mixing temperature is 82 to 90° C.; In step (2), the amount of the partial initiator is 15 to 30% of the total amount of the initiator; In step (3), the dropping time is 2.5 to 4.5 hours; In step (3), the temperature of the dropping is 80 to 90° C.; In step (3), the time of the first heat preservation reaction is 0.5 to 1 h; In step (3), the secondary heat preservation reaction time is 1 to 2 hours; In step (4), the cooling temperature is 70-80°C; In step (4), the post-treatment includes: adding an oxidizing agent and a reducing agent, cooling to below 50° C., adding a pH adjusting agent to adjust the pH to 7-8, discharging the material, and filtering.

8. The method for preparing the high gloss styrene-acrylic silicone emulsion according to claim 6, characterized in that: In step (2) and step (3), the initiator is added in the form of an aqueous solution; preferably, the initiator is dissolved in 1.3 to 1.6 parts of deionized water to obtain an initiator solution; And / or, in step (3), the dropping speed is 0.5 times in the first 30 minutes, then the dropping speed is 1 times for 1 hour, and finally the dropping speed is 1.5 times.

9. A high gloss styrene-acrylic silicone emulsion, characterized in that: The high-gloss styrene-acrylic silicone emulsion is prepared by the preparation method of the high-gloss styrene-acrylic silicone emulsion as claimed in any one of claims 6 to 8.

10. Use of the high-gloss styrene-acrylic silicone emulsion as claimed in claim 9 in building materials.

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