Environment-friendly slurry with high acid and alkali resistance as well as preparation method and application of environment-friendly slurry

Abstract

The invention relates to the technical field of building materials, and particularly discloses environment-friendly slurry with high acid and alkali resistance as well as a preparation method and application thereof. The environment-friendly slurry with high acid and alkali resistance provided by the invention is prepared from a component A and a component B, the component A is prepared from 25 to 35 parts of water, 35 to 45 parts of composite emulsion, 15 to 25 parts of alkyd resin, 0.4 to 0.8 part of wetting agent, 0.2 to 0.6 part of dispersing agent and 0.1 to 0.5 part of defoaming agent; the composite emulsion is prepared by mixing a VC / E / VL copolymer, an S-01 styrene-acrylic emulsion and alkylphenol polyoxyethylene ether in a weight ratio of (15-21): (6-10): (0.5-1.5); the component B comprises 22-30 parts of silica sol, 14-20 parts of modified filler, 1-5 parts of an anti-freezing agent and 1-3 parts of a preservative. The slurry prepared by using the technical scheme of the invention has high acid and alkali resistance and water resistance, and good environmental protection performance, and has good development prospects.

Description

Technical Field

[0001] This application relates to the technical field of building materials, and particularly relates to a highly acid- and alkali-resistant environmental protection slurry, its preparation method and application. Background Art

[0002] At present, significant progress has been made in the research of grouting materials, and the types of materials are becoming increasingly rich. Developed from traditional ordinary grouting materials to ultra-high-strength grouting materials, self-leveling grouting materials, quick-setting grouting materials, etc., these materials have continuously broken through in performance, with characteristics such as high strength, early strength, high bonding force, and good durability, meeting the requirements of different projects.

[0003] However, most slurries are easily decomposed in a strong acid and strong alkali environment, with poor stability, which easily leads to a decline in performance, and some slurries have environmental pollution problems during production and use. Summary of the Invention

[0004] In order to solve the above technical problems, this application provides a highly acid- and alkali-resistant environmental protection slurry, its preparation method and application.

[0005] In the first aspect, this application provides a highly acid- and alkali-resistant environmental protection slurry, which is composed of component A and component B with a weight ratio of 8.5 - 9.5:0.5 - 1.5; Component A specifically includes the following components in parts by weight: 25 - 35 parts of water, 35 - 45 parts of composite emulsion, 15 - 25 parts of alkyd resin, 0.4 - 0.8 parts of wetting agent, 0.2 - 0.6 parts of dispersant, 0.1 - 0.5 parts of defoaming agent; The composite emulsion is prepared by mixing VC / E / VL copolymer, S-01 styrene-acrylic emulsion, and alkylphenol polyoxyethylene ether with a weight ratio of 15 - 21:6 - 10:0.5 - 1.5; Component B specifically includes the following components in parts by weight: 22 - 30 parts of silica sol, 14 - 20 parts of modified filler, 1 - 5 parts of antifreeze, 1 - 3 parts of preservative; The preparation method of the modified filler is as follows: Dissolve fatty alcohol polyoxyethylene ether and sodium bicarbonate in water, add methyl methacrylate and butyl acrylate under nitrogen protection, stir for 8 - 15 min, slowly drop an aqueous solution of 0.8 - 1.2 wt% ammonium persulfate initiator, heat to 80 - 90 °C, and stir for 60 - 90 min; then add sodium silicate and stir for 60 - 90 min, then cool to below 40 °C, and add ammonia water to adjust the pH value to 8 - 9 to obtain the modified filler; the weight ratio of fatty alcohol polyoxyethylene ether, sodium bicarbonate, water, methyl methacrylate, butyl acrylate, ammonium persulfate to sodium silicate is: 4 - 8:0.8 - 1.4:10:15 - 22:4 - 11:0.4 - 0.6:10 - 16.

[0006] The slurry prepared by the above technical solution of the present application has high acid and alkali resistance, water resistance, good environmental protection performance, certain economic benefits and application value, and has good development prospects.

[0007] The alkyd resin provided by the present application has excellent acid and alkali resistance, can effectively resist the erosion of acid and alkali substances, and thus maintain the stability and durability of the slurry; secondly, as an environmentally friendly material, the alkyd resin does not contain harmful substances, meets the environmental protection standards, and helps to reduce the impact of the slurry on the environment; in addition, the alkyd resin can also enhance the adhesion and flexibility of the slurry, improve the quality and service life of the coating; its unique chemical structure enables the alkyd resin to be well compatible with a variety of materials, providing wide applicability for the slurry. In the composite emulsion, the VC / E / VL copolymer provides a tough network structure for the slurry, enhancing its mechanical strength and stability; this copolymer has good chemical corrosion resistance and can maintain the integrity of the structure in a strong acid or strong alkali environment. The addition of S-01 styrene-acrylic emulsion further improves the acid and alkali resistance of the slurry; the styrene-acrylic emulsion itself has excellent water resistance and chemical corrosion resistance, and can effectively protect the slurry from the erosion of acid and alkali substances; at the same time, it can also enhance the adhesion between the slurry and the substrate and improve the durability of the coating. Alkylphenol polyoxyethylene ether, as a surfactant, plays a key role in emulsifying, dispersing and stabilizing in the composite emulsion; it can effectively reduce the interfacial tension between the components, promote their uniform mixing, and thus form a stable composite emulsion. In addition, these three components have environmental protection characteristics and will not cause harm to the environment. The present application combines the unique properties of various components by accurately proportioning the ratios of the three raw materials, thereby endowing the slurry with excellent acid and alkali resistance and environmental protection characteristics.

[0008] For the modified filler of component B provided by the present application, an emulsion is first synthesized by fatty alcohol polyoxyethylene ether, sodium bicarbonate, water, methyl methacrylate, butyl acrylate, ammonium persulfate, and then sodium silicate is modified to obtain a modified filler, so that the modified sodium silicate has a special chemical structure, and this structure enables it to remain stable in an acid-base environment and is not prone to chemical reactions; when the slurry is exposed to a strong acid or strong alkali environment, the modified sodium silicate can effectively "resist" the erosion of these chemical substances in cooperation with other raw materials, protecting other components of the slurry from being damaged. The modified sodium silicate forms a network-like structure in the slurry system in cooperation with other raw materials, enhancing the cohesion of the slurry; in an acid-base environment, this network structure can effectively prevent the dissociation and dispersion of the slurry components, thus maintaining the integrity and stability of the slurry. Moreover, the modified sodium silicate also has excellent ion exchange ability. It can adsorb and fix harmful ions in the slurry, such as hydrogen ions and hydroxide ions, thereby reducing the destructive effect of these ions on the slurry performance; this ion exchange effect is particularly significant in an acid-base environment and can effectively neutralize acid and alkali substances to protect the slurry from their influence.

[0009] Preferably, the component A specifically includes the following components in parts by weight: 27-32 parts of water, 37-42 parts of composite emulsion, 18-23 parts of alkyd resin, 0.5-0.7 part of wetting agent, 0.3-0.5 part of dispersant, and 0.2-0.4 part of defoaming agent.

[0010] Preferably, in the component A, the composite emulsion is prepared by mixing a VC / E / VL copolymer, an S-01 styrene-acrylic emulsion, and an alkylphenol polyoxyethylene ether in a weight ratio of 17-19:7-9:0.7-1.2.

[0011] In a specific embodiment, in the composite emulsion, the weight ratio of the VC / E / VL copolymer, the S-01 styrene-acrylic emulsion, and the alkylphenol polyoxyethylene ether is 18:8:1, 17:7:0.7, or 19:9:1.2.

[0012] Preferably, in the component A, the hydroxyl value of the alkylphenol polyoxyethylene ether is 60-66 mgKOH / g.

[0013] Through experimental analysis, it can be known that in this application, a composite emulsion is prepared by mixing a VC / E / VL copolymer, an S-01 styrene-acrylic emulsion, and an alkylphenol polyoxyethylene ether with a hydroxyl value of 60-66 mgKOH / g in the above weight ratio, and the performance of the prepared slurry is further improved.

[0014] Preferably, in the component A, the wetting agent is a polyether siloxane copolymer; the defoaming agent is a polysiloxane defoaming agent; the dispersant is selected from one or more of sodium lignosulfonate, sodium dodecyl sulfate, polyacrylamide, sodium tripolyphosphate, and sodium pyrophosphate.

[0015] Preferably, the component B specifically includes the following components in parts by weight: 24-28 parts of silica sol, 16-18 parts of modified filler, 2-4 parts of antifreeze, and 1.5-2.5 parts of preservative.

[0016] Preferably, in the preparation method of the modified filler in the component B, the weight ratio of fatty alcohol polyoxyethylene ether, sodium bicarbonate, water, methyl methacrylate, butyl acrylate, ammonium persulfate, and sodium silicate is: 5-7:1-1.2:10:17-20:6-9:0.45-0.55:12-14.

[0017] In a specific embodiment, the weight ratio of fatty alcohol polyoxyethylene ether, sodium bicarbonate, water, methyl methacrylate, butyl acrylate, ammonium persulfate, and sodium silicate is 6:1.1:10:18:8:0.5:13, 5:1:10:17:6:0.45:12, or 7:1.2:10:20:9:0.55:14.

[0018] Through experimental analysis, it can be known that the present application uses fatty alcohol polyoxyethylene ether, sodium bicarbonate, water, methyl methacrylate, butyl acrylate, ammonium persulfate and sodium silicate in the above weight ratios to prepare a modified filler, and the prepared slurry has excellent performance.

[0019] Preferably, in the component B, the antifreeze is selected from one or more of propylene glycol and alkyl succinimide; the preservative is selected from one or more of 1,2-benzisothiazolin-3-one, 2-methyl-5-chloro-4-isothiazolin-3-one, iodopropargyl carbamate, and methyl benzimidazole carbamate.

[0020] In a second aspect, the present application provides a method for preparing the above high acid and alkali resistant environmental protection slurry, which specifically includes the following steps: according to the formulation amounts of component A, water, composite emulsion, alkyd resin, wetting agent, dispersant, and defoaming agent are respectively weighed and mixed evenly to obtain component A; According to the formulation amounts of component B, silica sol, modified filler, antifreeze, and preservative are respectively weighed and mixed evenly to obtain component B; During use, under stirring conditions, according to the ratio, component B is added to component A, and stirred for 10 - 20 minutes to mix evenly, thus obtaining the high acid and alkali resistant environmental protection slurry.

[0021] In a third aspect, the present application provides the application of the above high acid and alkali resistant environmental protection slurry in building materials.

[0022] In summary, the technical solution of the present application has the following effects: The high acid and alkali resistant environmental protection slurry of the present application has excellent acid and alkali resistance and can maintain stable performance in strong acid and strong alkali environments; no harmful substances are generated during the process of preparing the slurry of the present application, and the prepared slurry contains extremely few volatile organic compounds.

[0023] The preparation method of the present application is simple and easy to operate, the raw materials are easy to obtain, the cost is low, and it is suitable for large-scale industrial production; the high acid and alkali resistant environmental protection slurry of the present application can be widely applied in the construction field and has a broad market prospect. Specific Embodiments

[0024] The present application will be further described in detail below in combination with examples, comparative examples, and performance detection tests. These examples should not be construed as limiting the scope claimed by the present application.

[0025] The raw materials used in this application, VC / E / VL copolymer (8031H) and VAC / E / VE copolymer (7031H), were purchased from Shanghai Shangnan New Materials Co., Ltd.; S-01 styrene-acrylic emulsion and S-05 pure acrylic emulsion were purchased from Jiangsu Shengda New Materials Technology Co., Ltd.; alkyd resin (model HBTCSSZ-1225) was purchased from Hanbot Coating (Shandong) Co., Ltd.; wetting agent (model: SH-270A, polyether silicone copolymer) and defoaming agent (polysiloxane defoaming agent, model: SH-T20-2) were purchased from Hubei Longsheng Sihai New Materials Co., Ltd.; JN-30 silica sol (industrial grade product of Qingdao Yurui Chemical Co., Ltd.); alkylphenol polyoxyethylene ether (specification TX-15, hydroxyl value 60 - 66mgKOH / g) (specification TX-13, hydroxyl value 68 - 73mgKOH / g) (specification TX-18, hydroxyl value 53 - 58mgKOH / g) were purchased from Jiangsu Haian Petrochemical Factory. Example

[0026] Example 1 Example 1 provides a highly acid- and alkali-resistant environmentally friendly sizing agent.

[0027] The preparation method of the highly acid- and alkali-resistant environmentally friendly sizing agent in this example is as follows.

[0028] Component A: Weigh 30g of water, 40g of composite emulsion, 20g of alkyd resin, 0.6g of wetting agent, 0.4g of sodium dodecyl sulfate dispersant, and 0.3g of defoaming agent respectively, and mix them evenly to obtain Component A.

[0029] Among them, the composite emulsion is prepared by mixing VC / E / VL copolymer, S-01 styrene-acrylic emulsion, and alkylphenol polyoxyethylene ether (specification TX-15, hydroxyl value 60 - 66mgKOH / g) in a weight ratio of 18:8:1.

[0030] Component B: Weigh 26g of silica sol, 17g of modified filler, 3g of propylene glycol antifreeze, and 2g of iodopropargyl carbamate preservative respectively, and mix them evenly to obtain Component B.

[0031] Among them, the preparation method of the modified filler is as follows: Dissolve 6g of fatty alcohol polyoxyethylene ether and 1.1g of sodium bicarbonate in 10g of deionized water. Under nitrogen protection, add 18g of methyl methacrylate and 8g of butyl acrylate, stir for 10min, slowly drop 0.5g of 1.0wt% ammonium persulfate initiator aqueous solution, heat to 85°C, and stir for 75min; then add 13g of sodium silicate, stir for 75min, then cool to below 40°C, and adjust the pH value to 8.5 with ammonia water to obtain the modified filler; the weight ratio of fatty alcohol polyoxyethylene ether, sodium bicarbonate, water, methyl methacrylate, butyl acrylate, ammonium persulfate to sodium silicate is 6:1.1:10:18:8:0.5:13.

[0032] During use, under the stirring condition of 300 rpm, according to the ratio, 10 g of component B is added to 90 g of component A, and stirred for 10 - 20 min until evenly mixed to obtain a highly acid- and alkali-resistant environmental protection slurry.

[0033] Examples 2 - 9 Examples 2 - 9 respectively provide a highly acid- and alkali-resistant environmental protection slurry.

[0034] The differences between the above examples and Example 1 are as follows: the compositions of component A are different, as specifically shown below.

[0035] In Example 2: Weigh 30 g of water, 35 g of composite emulsion, 25 g of alkyd resin, 0.6 g of wetting agent, 0.4 g of sodium dodecyl sulfate dispersant, and 0.3 g of defoaming agent respectively, and mix evenly to obtain component A.

[0036] In Example 3: Weigh 30 g of water, 45 g of composite emulsion, 15 g of alkyd resin, 0.6 g of wetting agent, 0.4 g of sodium dodecyl sulfate dispersant, and 0.3 g of defoaming agent respectively, and mix evenly to obtain component A.

[0037] In Example 4: Weigh 30 g of water, 37 g of composite emulsion, 23 g of alkyd resin, 0.6 g of wetting agent, 0.4 g of sodium dodecyl sulfate dispersant, and 0.3 g of defoaming agent respectively, and mix evenly to obtain component A.

[0038] In Example 5: Weigh 30 g of water, 42 g of composite emulsion, 18 g of alkyd resin, 0.6 g of wetting agent, 0.4 g of sodium dodecyl sulfate dispersant, and 0.3 g of defoaming agent respectively, and mix evenly to obtain component A.

[0039] In Example 6: The composite emulsion is prepared by mixing a VC / E / VL copolymer, S-01 styrene-acrylic emulsion, and alkylphenol polyoxyethylene ether (specification TX-13, hydroxyl value 68 - 73 mgKOH / g) with a weight ratio of 18:8:1.

[0040] In Example 7: The composite emulsion is prepared by mixing a VC / E / VL copolymer, S-01 styrene-acrylic emulsion, and alkylphenol polyoxyethylene ether (specification TX-18, hydroxyl value 53 - 58 mgKOH / g) with a weight ratio of 18:8:1.

[0041] In Example 8: The composite emulsion is prepared by mixing a VC / E / VL copolymer, S-01 styrene-acrylic emulsion, and alkylphenol polyoxyethylene ether (specification TX-15, hydroxyl value 60 - 66 mgKOH / g) with a weight ratio of 15:10:1.5.

[0042] In Example 9: The composite emulsion was prepared by mixing a VC / E / VL copolymer, an S-01 styrene-acrylic emulsion, and an alkylphenol polyoxyethylene ether (specification TX-15, hydroxyl value 60 - 66 mgKOH / g) with a weight ratio of 21:6:0.5.

[0043] For the other process parameters in the above examples, they were the same as those in Example 1.

[0044] Examples 10 - 15 Examples 10 - 15 respectively provided a highly acid- and alkali-resistant environmentally friendly sizing agent.

[0045] The difference between the above examples and Example 1 was that the composition of Component B was different, as specifically shown below.

[0046] In Example 10: 22 g of silica sol, 20 g of modified filler, 3 g of propylene glycol antifreeze, and 2 g of iodopropargyl carbamate preservative were respectively weighed and mixed evenly to obtain Component B.

[0047] In Example 11: 30 g of silica sol, 14 g of modified filler, 3 g of propylene glycol antifreeze, and 2 g of iodopropargyl carbamate preservative were respectively weighed and mixed evenly to obtain Component B.

[0048] In Example 12: In the preparation method of the modified filler: The weight ratio of fatty alcohol polyoxyethylene ether, sodium bicarbonate, water, methyl methacrylate, butyl acrylate, ammonium persulfate to sodium silicate was 4:1.4:10:15:11:0.4:16.

[0049] In Example 13: In the preparation method of the modified filler: The weight ratio of fatty alcohol polyoxyethylene ether, sodium bicarbonate, water, methyl methacrylate, butyl acrylate, ammonium persulfate to sodium silicate was 8:0.8:10:22:4:0.6:10.

[0050] In Example 14: In the preparation method of the modified filler: The weight ratio of fatty alcohol polyoxyethylene ether, sodium bicarbonate, water, methyl methacrylate, butyl acrylate, ammonium persulfate to sodium silicate was 5:1.2:10:17:9:0.45:14.

[0051] In Example 15: In the preparation method of the modified filler: The weight ratio of fatty alcohol polyoxyethylene ether, sodium bicarbonate, water, methyl methacrylate, butyl acrylate, ammonium persulfate to sodium silicate was 7:1.0:10:20:6:0.55:12.

[0052] For the other process parameters in the above examples, they were the same as those in Example 1.

[0053] Comparative Examples Comparative Examples 1 - 7 Comparative Examples 1 - 7 respectively provided a highly acid- and alkali-resistant environmentally friendly sizing agent.

[0054] The differences between the above comparative examples and Example 1 are specifically as follows.

[0055] In Comparative Example 1: Weigh 30 g of water, 20 g of composite emulsion, 40 g of alkyd resin, 0.6 g of wetting agent, 0.4 g of sodium dodecyl sulfate dispersant, and 0.3 g of defoamer respectively, and mix them evenly to obtain Component A.

[0056] In Comparative Example 2: In Component A, the composite emulsion is prepared by mixing a VAC / E / VE copolymer (7031H), S-01 styrene-acrylic emulsion, and alkylphenol polyoxyethylene ether (specification TX-15, hydroxyl value 60 - 66 mgKOH / g) with a weight ratio of 18:8:1.

[0057] In Comparative Example 3: In Component A, the composite emulsion is prepared by mixing a VC / E / VL copolymer, S-05 pure acrylic emulsion, and alkylphenol polyoxyethylene ether (specification TX-15, hydroxyl value 60 - 66 mgKOH / g) with a weight ratio of 18:8:1.

[0058] In Comparative Example 4: In Component A, the composite emulsion is prepared by mixing a VC / E / VL copolymer, S-01 styrene-acrylic emulsion, and alkylphenol polyoxyethylene ether (specification TX-15, hydroxyl value 60 - 66 mgKOH / g) with a weight ratio of 8:18:3.

[0059] In Comparative Example 5: In Component B, weigh 14 g of silica sol, 30 g of modified filler, 3 g of propylene glycol antifreeze, and 2 g of iodopropargyl carbamate preservative respectively, and mix them evenly to obtain Component B.

[0060] In Comparative Example 6: In the preparation method of the modified filler in Component B: Isooctyl acrylate is used to replace butyl acrylate in equal amounts.

[0061] In Comparative Example 7: In the preparation method of the modified filler in Component B: The weight ratio of fatty alcohol polyoxyethylene ether, sodium bicarbonate, water, methyl methacrylate, butyl acrylate, ammonium persulfate to sodium silicate is 1:5:10:8:18:0.4:8.

[0062] Other process parameters in the above comparative examples are the same as those in Example 1.

[0063] Performance detection test Detect the surface drying time, water resistance, acid resistance, and alkali resistance of the high acid and alkali resistant environmental protection slurry according to the standards specified in JG 26 "External Wall Inorganic Architectural Coatings".

[0064] Determine the content of volatile organic compounds (VOC) in the high acid and alkali resistant environmental protection slurry according to the regulations in GB / T 23985 - 2009.

[0065] Test results: As shown in Table 2.

[0066] Table 2 Performance test results of highly acid- and alkali-resistant environmentally friendly slurries in Examples 1-15 and Comparative Examples 1-7 Combined with Table 2, by comparing the test results of the examples and comparative examples, it can be seen that the slurry prepared by the technical solution of the present application has high acid and alkali resistance, water resistance, and good environmental performance, has certain economic benefits and application value, and has good development prospects.

[0067] By comparing the test results of Examples 1-5 and Comparative Example 1, it can be seen that the dosage of each raw material in Component A has a great influence on the performance of the slurry. The present application selects 25-35 parts of water, 35-45 parts of composite emulsion, 15-25 parts of alkyd resin, 0.4-0.8 parts of wetting agent, 0.2-0.6 parts of dispersant, and 0.1-0.5 parts of defoaming agent to form Component A, which can effectively improve the performance of the slurry.

[0068] By comparing the test results of Examples 1, 6-9 and Comparative Examples 2-4, it can be seen that the composite emulsion in Component A of Comparative Example 2 is prepared by mixing VAC / E / VE copolymer, S-01 styrene-acrylic emulsion, and alkylphenol polyoxyethylene ether; the composite emulsion in Component A of Comparative Example 3 is prepared by mixing VC / E / VL copolymer, S-05 pure acrylic emulsion, and alkylphenol polyoxyethylene ether; the composite emulsion in Component A of Comparative Example 4 is prepared by mixing VC / E / VL copolymer, S-01 styrene-acrylic emulsion, and alkylphenol polyoxyethylene ether in a weight ratio of 8:18:3, and the performance of the prepared slurry is poor. In contrast, the composite emulsion used in the examples of the present application is prepared by mixing VC / E / VL copolymer, S-01 styrene-acrylic emulsion, and alkylphenol polyoxyethylene ether in a weight ratio of 15-21:6-10:0.5-1.5, effectively improving the performance of the slurry.

[0069] By comparing the test results of Examples 1, 10-11 and Comparative Example 5, it can be seen that the dosage of each raw material in Component B has a great influence on the performance of the slurry. The present application selects 22-30 parts of silica sol, 14-20 parts of modified filler, 1-5 parts of antifreeze, and 1-3 parts of preservative to form Component B, which can effectively improve the performance of the slurry.

[0070] By comparing the test results of Examples 1, 12 - 15 with Comparative Examples 6 - 7, it can be seen that in the B component of Comparative Example 6, isooctyl acrylate is used to replace butyl acrylate in equal amounts to prepare the modified filler, and in the B component of Comparative Example 7, a modified filler is prepared with fatty alcohol polyoxyethylene ether, sodium bicarbonate, water, methyl methacrylate, butyl acrylate, ammonium persulfate and sodium silicate in a weight ratio of 1:5:10:8:18:0.4:8, and the performance of the prepared slurry is poor. In contrast, in the examples of the present application, a modified filler is prepared with fatty alcohol polyoxyethylene ether, sodium bicarbonate, water, methyl methacrylate, butyl acrylate, ammonium persulfate and sodium silicate in a weight ratio of 4 - 8:0.8 - 1.4:10:15 - 22:4 - 11:0.4 - 0.6:10 - 16, effectively improving the performance of the slurry.

[0071] Although the present invention has been described in detail above with general descriptions and specific embodiments, based on the present invention, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection required by the present invention.

Claims

1. A highly acid- and alkali-resistant environmental protection sizing agent, characterized in that, The high acid- and alkali-resistant environmental protection slurry is composed of component A and component B with a weight ratio of 8.5 - 9.5:0.5 - 1.5; Component A specifically includes the following components in parts by weight: 25 - 35 parts of water, 35 - 45 parts of composite emulsion, 15 - 25 parts of alkyd resin, 0.4 - 0.8 part of wetting agent, 0.2 - 0.6 part of dispersant, and 0.1 - 0.5 part of defoaming agent; The composite emulsion is prepared by mixing a VC / E / VL copolymer, S-01 styrene-acrylic emulsion, and alkylphenol polyoxyethylene ether with a weight ratio of 15 - 21:6 - 10:0.5 - 1.5; Component B specifically includes the following components in parts by weight: 22 - 30 parts of silica sol, 14 - 20 parts of modified filler, 1 - 5 parts of antifreeze, and 1 - 3 parts of preservative; The preparation method of the modified filler is as follows: dissolve fatty alcohol polyoxyethylene ether and sodium bicarbonate in water, add methyl methacrylate and butyl acrylate under nitrogen protection, stir for 8 - 15 min, slowly dropwise add an aqueous solution of ammonium persulfate initiator with a concentration of 0.8 - 1.2 wt%, heat to 80 - 90 °C, and stir for 60 - 90 min; then add sodium silicate, stir for 60 - 90 min, then cool to below 40 °C, and add ammonia water to adjust the pH value to 8 - 9 to obtain the modified filler; the weight ratio of fatty alcohol polyoxyethylene ether, sodium bicarbonate, water, methyl methacrylate, butyl acrylate, ammonium persulfate to sodium silicate is: 4 - 8:0.8 - 1.4:10:15 - 22:4 - 11:0.4 - 0.6:10 - 16.

2. The high acid and alkali resistant environmental protection sizing material according to claim 1, characterized in that Component A specifically includes the following components in parts by weight: 27 - 32 parts of water, 37 - 42 parts of composite emulsion, 18 - 23 parts of alkyd resin, 0.5 - 0.7 part of wetting agent, 0.3 - 0.5 part of dispersant, and 0.2 - 0.4 part of defoaming agent.

3. The highly acid- and alkali-resistant environmentally friendly slurry according to claim 1, characterized in that In component A, the composite emulsion is prepared by mixing a VC / E / VL copolymer, S-01 styrene-acrylic emulsion, and alkylphenol polyoxyethylene ether with a weight ratio of 17 - 19:7 - 9:0.7 - 1.

2.

4. The high acid and alkali resistant environmental protection sizing material according to claim 1, characterized in that, In component A, the hydroxyl value of the alkylphenol polyoxyethylene ether is 60 - 66 mgKOH / g.

5. The highly acid- and alkali-resistant environmental protection sizing material according to claim 1, wherein In component A, the wetting agent is a polyether silicone copolymer; the defoaming agent is a polysiloxane defoaming agent; the dispersant is selected from one or more of sodium lignosulfonate, sodium dodecyl sulfate, polyacrylamide, sodium tripolyphosphate, and sodium pyrophosphate.

6. The high acid and alkali resistant environmental protection sizing material according to claim 1, wherein, Component B specifically includes the following components in parts by weight: 24 - 28 parts of silica sol, 16 - 18 parts of modified filler, 2 - 4 parts of antifreeze, and 1.5 - 2.5 parts of preservative.

7. The high acid and alkali resistant environmental protection sizing material according to claim 1, characterized in that In component B, in the preparation method of the modified filler, the weight ratio of fatty alcohol polyoxyethylene ether, sodium bicarbonate, water, methyl methacrylate, butyl acrylate, ammonium persulfate to sodium silicate is: 5 - 7:1 - 1.2:10:17 - 20:6 - 9:0.45 - 0.55:12 - 14.

8. The highly acid- and alkali-resistant environmental protection sizing material according to claim 1, wherein In the component B, the antifreeze is selected from one or more of propylene glycol and alkyl succinimide; the preservative is selected from one or more of 1,2-benzisothiazolin-3-one, 2-methyl-5-chloro-4-isothiazolin-3-one, iodopropargyl carbamate, and methyl benzimidazole carbamate.

9. A preparation method of the highly acid- and alkali-resistant environmental protection slurry according to any one of claims 1-8, characterized in that, Specifically, it includes the following steps: According to the formulation amount of component A, water, composite emulsion, alkyd resin, wetting agent, dispersant, and defoaming agent are respectively weighed and mixed evenly to obtain component A; According to the formulation amount of component B, silica sol, modified filler, antifreeze, and preservative are respectively weighed and mixed evenly to obtain component B; During use, under stirring conditions, component B is added to component A according to the ratio, and stirred for 10 - 20 min and mixed evenly to obtain the high acid- and alkali-resistant environmental protection sizing material.

10. Application of the high acid- and alkali-resistant environmental protection sizing material according to any one of claims 1 - 8 in building materials.

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