Silane modified polyether waterproof coating and preparation method thereof

Abstract

The invention provides a silane modified polyether waterproof coating and a preparation method thereof. The silane modified polyether waterproof coating comprises a prime coating and a surface coating, the prime paint comprises the following components in parts by weight: 20-35 parts of an environment-friendly plasticizer, 1-2.5 parts of a titanium dioxide substituted nano pigment, 40-50 parts of filling powder, 15-25 parts of resin and 3-5 parts of an auxiliary agent I; and the surface layer coating comprises the following components in parts by weight: 50-60 parts of emulsion, 35-45 parts of water and 3-5 parts of an auxiliary agent II. The silane modified polyether waterproof coating with the solid content of 99% is environment-friendly, free of solvents, safe in components and free of peculiar smell; good impact resistance, chemical corrosion resistance and aging resistance are achieved; construction is convenient and fast, and blade coating, roller coating, brush coating and spray coating can be carried out for construction. After the coating film is cured, no reactive group is left, light reflection and heat insulation are realized, and energy consumption is reduced, so that an environment-friendly green product which is energy-saving and emission-reducing is realized.

Description

Technical Field

[0001] The present invention relates to the field of coatings, and in particular to a silane-modified polyether waterproof coating and a preparation method thereof. Background Art

[0002] With the rapid development of China's economy in the 21st century, polyurethane waterproof coatings have seen explosive growth not only in the civilian market but also in key national engineering projects. This is particularly true in key areas such as high-speed rail, subways, highways, and water conservancy projects, which place higher demands on high-performance polyurethane waterproof coatings. The industry standard JC / T 975-2005, "Waterproof Coatings for Roads and Bridges," proposed by the China Building Materials Association in 2005, and the industry standard TB / T2965-2011, "Technical Requirements for Waterproofing Layers of Railway Concrete Bridge Deck," formulated by the Ministry of Railways in 2011, both require a 98% solids content for polyurethane waterproof coatings, significantly promoting the healthy development of polyurethane waterproof coatings in China. However, the performance of existing polyurethane waterproof coatings still needs to be improved. To address this, we have developed a polyurethane waterproof coating with even better performance. Summary of the Invention

[0003] In response to the above-mentioned problems, the present invention proposes a silane-modified polyether waterproof coating with better performance and a preparation method thereof.

[0004] The technical solution of the present invention is achieved as follows:

[0005] The present invention first proposes a silane-modified polyether waterproof coating, which includes a primer and a surface coating; the primer includes, by weight, 20-35 parts of an environmentally friendly plasticizer, 1-2.5 parts of a titanium dioxide nanopigment substitute, 40-50 parts of a filler powder, 15-25 parts of a resin, and 3-5 parts of an additive I; the surface coating includes, by weight, 50-60 parts of an emulsion, 35-45 parts of water, and 3-5 parts of an additive II.

[0006] Preferably, the nano-pigment replacing titanium dioxide comprises nano-aluminum silicate.

[0007] Preferably, the resin is a silane-modified polyether resin, and the emulsion is a water-based modified acrylate emulsion. The silane-modified polyether resin comprises a high-molecular-weight polyether diol, a silane-terminated urethane polymer containing urethane groups, and has a solids content of 100%. The water-based modified acrylate emulsion comprises a pure acrylate polymer and has a solids content of 40-45%.

[0008] Preferably, the filler powder includes one or more of titanium dioxide, kaolin or heavy calcium.

[0009] Preferably, the auxiliary agent I includes one or more of a plasticizer, an ultraviolet light absorber, an ultraviolet light stabilizer, an antioxidant, a water scavenger, a silane coupling agent, a catalyst, a preservative, a wetting agent, a dispersant, a defoamer, an antifungal agent, an antifreeze agent, a film-forming aid, a multifunctional regulator, a thickener, or a leveling agent; and the auxiliary agent II includes one or more of a plasticizer, an ultraviolet light absorber, an ultraviolet light stabilizer, an antioxidant, a water scavenger, a silane coupling agent, a catalyst, a preservative, a wetting agent, a dispersant, a defoamer, an antifungal agent, an antifreeze agent, a film-forming aid, a multifunctional regulator, a thickener, or a leveling agent.

[0010] The preservative is kason and / or isothiazolinone; the wetting agent is octylphenol polyoxyethylene ether; the dispersant is sodium polyacrylate; the defoaming agent is liquid metal soap emulsion and / or mineral oil emulsion; the mildew inhibitor includes one or more of OIT, carbendazim or diuron; the antifreeze agent is ethylene glycol; the film-forming aid is dodecyl alcohol ester; the multifunctional regulator is 2-amino-2-methyl-1-propanol; the thickener includes one or more of hydrophobically modified alkali swelling thickener, polyurethane thickener or cellulose; the plasticizer The agent is a plant ester environmentally friendly plasticizer; the ultraviolet absorber is 2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole; the ultraviolet stabilizer is bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate; the antioxidant is β-(3.5-di-tert-butyl, 4-hydroxyphenyl) propionate; the water scavenger is vinyltrimethoxysilane; the silane coupling agent is N-2-aminoethyl-3-aminopropyltrimethoxysilane; the catalyst is tin chelate; and the leveling agent is polyurethane.

[0011] The present invention also provides a method for preparing a silane-modified polyether waterproof coating, which includes the preparation of a primer and a surface coating.

[0012] The preparation of the primer includes the following steps:

[0013] Step A1: mixing the plasticizer and the filler powder, dispersing and stirring until no lumps form, to obtain a first mixed material;

[0014] Step B1: Adding additive I to the first mixture, dispersing and stirring until the fineness of the filling powder is less than 35 μm, to obtain a second mixture;

[0015] Step C1: heating the second mixture to 120° C. and vacuum dehydrating for 3 hours to obtain a third mixture;

[0016] Step D1: The third mixture is dispersed and stirred at a dispersion stirring speed of 450 to 500 r / min, and the temperature is cooled to 70° C., resin and additive I are added to the third mixture, and the mixture is dispersed and stirred to obtain a fourth mixture;

[0017] Step E1: The fourth mixed material is dispersed and stirred at a dispersion stirring speed of 350 to 400 r / min, and the temperature is cooled to 30° C., and the additive I is added to the fourth mixed material, and the mixture is dispersed and stirred to obtain a primer;

[0018] The preparation of the topcoat comprises the following steps:

[0019] Step A2: mixing and dispersing the additive II with water to obtain a first mixed material II;

[0020] Step B2: adding the emulsion to the first mixture to obtain a second mixture II;

[0021] Step C2: dispersing and stirring the second mixed material II at a dispersing and stirring speed of 450-500 r / min, adding the auxiliary agent II to the second mixed material II to obtain a third mixed material II;

[0022] Step D2: The third mixed material II is dispersed and stirred at a dispersion and stirring speed of 350 to 400 r / min, and the auxiliary agent II is added to the third mixed material II, dispersed and stirred to obtain a surface coating.

[0023] Furthermore, the plasticizer in step A1 is a plant ester environmentally friendly plasticizer.

[0024] Furthermore, in step B1, the auxiliary agent I includes an ultraviolet absorber, an ultraviolet stabilizer and an antioxidant; in step D1, the auxiliary agent I includes a water scavenger and a silane coupling agent; in step E1, the auxiliary agent I includes a catalyst; in step C2, the auxiliary agent II includes a film-forming auxiliary agent, a defoaming agent, a multifunctional regulator and an antifungal agent; and in step D2, the auxiliary agent II includes a thickener and a leveling agent.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention provides a 99% solids silane-modified polyether waterproof coating. This environmentally friendly, green, solvent-free coating is safe and odorless, exhibiting excellent impact resistance, chemical corrosion resistance, and aging resistance. It is easy to apply and can be applied by scraping, rolling, brushing, or spraying. After curing, the coating leaves no residual reactive groups, provides light reflection and heat insulation, and reduces energy consumption, thus achieving energy conservation, emission reduction, and environmentally friendly green products. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a construction drawing of a silane-modified polyether waterproof coating according to Example 1;

[0029] Figure 2 This is a test result diagram of the primer of Example 2;

[0030] Figure 3 This is a test result diagram of the surface coating of Example 2;

[0031] Figure 4 This is a test result diagram of the primer of Example 3;

[0032] Figure 5 This is a test result diagram of the surface coating of Example 3;

[0033] Figure 6 This is a test result diagram of the primer of Example 4;

[0034] Figure 7 This is a test result diagram of the surface coating of Example 4;

[0035] Figure 8 This is a test result diagram of the primer of Example 5;

[0036] Figure 9 This is a test result diagram of the surface coating of Example 5;

[0037] Figure 10 This is a test result diagram of the primer of Example 6;

[0038] Figure 11 This is a diagram showing the test results of the surface coating of Example 6.

[0039] In the figure: 1-primer coating, 2-topcoat coating, 3-concrete base. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] Example 1

[0042] A silane-modified polyether waterproof coating comprises a primer and a topcoat; the primer comprises, by weight, 20-35 parts of an environmentally friendly plasticizer, 1-2.5 parts of a titanium dioxide alternative nanopigment, 40-50 parts of a filler powder, 15-25 parts of a resin, and 3-5 parts of an additive I; the topcoat comprises, by weight, 50-60 parts of an emulsion, 35-45 parts of water, and 3-5 parts of an additive II.

[0043] Preferably, the nano-pigment replacing titanium dioxide comprises nano-aluminum silicate.

[0044] Preferably, the resin is a silane-modified polyether resin, and the emulsion is a water-based modified acrylate emulsion. The silane-modified polyether resin comprises a high-molecular-weight polyether diol, a silane-terminated urethane polymer containing urethane groups, and has a solids content of 100%. The water-based modified acrylate emulsion comprises a pure acrylate polymer and has a solids content of 40-45%.

[0045] Preferably, the filler powder comprises one or more of titanium dioxide, kaolin, or heavy calcium carbonate, wherein the main component of the titanium dioxide is titanium dioxide, the main component of the kaolin is porcelain clay, and the heavy calcium carbonate is 1250 mesh heavy calcium carbonate, the main component of which is ground calcium carbonate.

[0046] Preferably, the auxiliary agent I includes one or more of a plasticizer, an ultraviolet light absorber, an ultraviolet light stabilizer, an antioxidant, a water scavenger, a silane coupling agent, a catalyst, a preservative, a wetting agent, a dispersant, a defoamer, an antifungal agent, an antifreeze agent, a film-forming aid, a multifunctional regulator, a thickener, or a leveling agent; and the auxiliary agent II includes one or more of a plasticizer, an ultraviolet light absorber, an ultraviolet light stabilizer, an antioxidant, a water scavenger, a silane coupling agent, a catalyst, a preservative, a wetting agent, a dispersant, a defoamer, an antifungal agent, an antifreeze agent, a film-forming aid, a multifunctional regulator, a thickener, or a leveling agent.

[0047] The preservative is a kasonide and / or isothiazolinone, with 1.5% of the isothiazolinone being effective in preventing viruses and killing bacteria. The wetting agent is octylphenol polyoxyethylene ether, preferably 70% octylphenol polyoxyethylene ether, with an HLB value of 17.9 and no APEO. The dispersant is sodium polyacrylate, with a solids content of 43% and no APEO. The defoaming agent is a liquid metal soap emulsion and / or a mineral oil emulsion; the mildew inhibitor includes one or more of OIT, carbendazim or diuron; the antifreeze agent is ethylene glycol, and the raw material brand of ethylene glycol is EG; the film-forming aid is dodecyl alcohol ester; the multifunctional regulator is 2-amino-2-methyl-1-propanol, and its active ingredient content is 95%, and its main function is to adjust the pH value; the thickener includes one or more of a hydrophobically modified alkali-swellable thickener, a polyurethane thickener or cellulose, wherein the main component of the hydrophobically modified alkali-swellable thickener is polyacrylate, and the solid content is 29.5-30.5%. The main component of the polyurethane thickener is polyurethane, and the solid content is 20.8-21.8%; the main component of the cellulose is hydroxyethyl ether; the plasticizer is a plant ester environmentally friendly plasticizer; the ultraviolet absorber is 2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole; the ultraviolet stabilizer is bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate; the antioxidant is β-(3.5-di-tert-butyl, 4-hydroxyphenyl) propionate; the water remover is vinyltrimethoxysilane; the silane coupling agent is N-2-aminoethyl-3-aminopropyltrimethoxysilane; the catalyst is tin chelate; and the leveling agent is polyurethane, and the solid content is 19-21%.

[0048] A method for preparing a silane-modified polyether waterproof coating, comprising the preparation of a primer and a surface coating;

[0049] The preparation of the primer includes the following steps:

[0050] Step A1: mixing the plasticizer and the filler powder, dispersing and stirring until no lumps form, to obtain a first mixed material;

[0051] Step B1: Adding additive I to the first mixture, dispersing and stirring until the fineness of the filling powder is less than 35 μm, to obtain a second mixture;

[0052] Step C1: heating the second mixture to 120° C. and vacuum dehydrating for 3 hours to obtain a third mixture;

[0053] Step D1: The third mixture is dispersed and stirred at a dispersion stirring speed of 450 to 500 r / min, and the temperature is cooled to 70° C., resin and additive I are added to the third mixture, and the mixture is dispersed and stirred to obtain a fourth mixture;

[0054] Step E1: The fourth mixed material is dispersed and stirred at a dispersion stirring speed of 350 to 400 r / min, and the temperature is cooled to 30° C., and the additive I is added to the fourth mixed material, and the mixture is dispersed and stirred to obtain a primer;

[0055] The preparation of the topcoat comprises the following steps:

[0056] Step A2: mixing and dispersing the additive II with water to obtain a first mixed material II;

[0057] Step B2: adding the emulsion to the first mixture to obtain a second mixture II;

[0058] Step C2: dispersing and stirring the second mixed material II at a dispersing and stirring speed of 450-500 r / min, adding the auxiliary agent II to the second mixed material II to obtain a third mixed material II;

[0059] Step D2: The third mixed material II is dispersed and stirred at a dispersion and stirring speed of 350 to 400 r / min, and the auxiliary agent II is added to the third mixed material II, dispersed and stirred to obtain a surface coating.

[0060] Furthermore, the plasticizer in step A1 is a plant ester environmentally friendly plasticizer.

[0061] Furthermore, in step B1, the auxiliary agent I includes an ultraviolet absorber, an ultraviolet stabilizer and an antioxidant; in step D1, the auxiliary agent I includes a water scavenger and a silane coupling agent; in step E1, the auxiliary agent I includes a catalyst; in step C2, the auxiliary agent II includes a film-forming auxiliary agent, a defoaming agent, a multifunctional regulator and an antifungal agent; and in step D2, the auxiliary agent II includes a thickener and a leveling agent.

[0062] like Figure 1 When using, apply the primer to the concrete base and then apply the topcoat after it dries.

[0063] The silane-modified polyether waterproof coating of the present invention: (1) fineness, viscosity, and pH value all meet qualified standards, and solid content meets the required standard of 99%; (2) can withstand cold at -40°C and bend without cracks; (3) has good covering performance, easy-to-clean and high anti-fouling performance.

[0064] Example 2

[0065] A silane-modified polyether waterproof coating comprises a primer and a surface coating.

[0066] Among them, the formula of the primer is as follows:

[0067]

[0068] The preparation method of the primer is as follows:

[0069] ① First, add the environmentally friendly plasticizer into the production cylinder, start the high-speed disperser equipment, and adjust the dispersion speed to 350r / min; add the raw materials numbered 2-5 in sequence, adjust the dispersion speed to 400r / min, disperse and stir for 5 minutes and enter the next process stage;

[0070] ②Heat the material to 120℃, adjust the dispersion speed to 800r / min-1200r / min (adjust according to the production volume), vacuum dehydrate for 3 hours, test the fineness and moisture, and enter the next process stage after the fineness is ≤35μm and the moisture is ≤500ppm;

[0071] ③ Cool the material to 70℃, adjust the dispersion speed to below 300r / min, add raw materials No. 6-8 in sequence, disperse for 5 minutes and enter the next process stage. The dispersion speed in this stage must be controlled below 300r / min;

[0072] ④ Cool the material to 30℃, adjust the dispersion speed to 500r / min, and finally add the raw material No. 9, disperse for 5 minutes and enter the next process stage;

[0073] ⑤ Vacuum degassing for 30 minutes before entering finished product inspection. After all indicators are qualified, packaging and shipment will be carried out.

[0074] The test results of the base coating are as follows Figure 2 .

[0075] Among them, the formula of the surface coating is as follows:

[0076]

[0077] The preparation method of the surface coating is as follows:

[0078] ① First add water to the production cylinder, turn on the high-speed disperser equipment, adjust the dispersion speed to 350r / min; add raw materials numbered 2-4 in sequence, adjust the dispersion speed to 400r / min, disperse and stir for 5 minutes to enter the next process stage;

[0079] ② Adjust the dispersion speed to 300r / min-500r / min (adjust according to the production volume), and enter the next process stage after dispersion for 15 minutes;

[0080] ③ Adjust the dispersion speed to below 300r / min, add raw materials No. 5-8 in sequence, disperse for 5 minutes and enter the next process stage. The dispersion speed in this stage must be controlled below 300r / min;

[0081] ④ Adjust the dispersion speed to 500r / min, finally add the raw materials No. 9-10, disperse for 5 minutes and enter the next process stage;

[0082] ⑤ Degassing at low speed for 30 minutes before entering finished product inspection. After all indicators are qualified, packaging and shipment will be carried out.

[0083] The test results of the surface coating are as follows Figure 3 .

[0084] Example 3

[0085] A silane-modified polyether waterproof coating comprises a primer and a surface coating.

[0086] Among them, the formula of the primer is as follows:

[0087]

[0088] The preparation method of the primer is as follows:

[0089] ① First, add the environmentally friendly plasticizer into the production cylinder, start the high-speed disperser equipment, and adjust the dispersion speed to 350r / min; add the raw materials numbered 2-5 in sequence, adjust the dispersion speed to 400r / min, disperse and stir for 5 minutes and enter the next process stage;

[0090] ②Heat the material to 120℃, adjust the dispersion speed to 800r / min-1200r / min (adjust according to the production volume), vacuum dehydrate for 3 hours, test the fineness and moisture, and enter the next process stage after the fineness is ≤35μm and the moisture is ≤500ppm;

[0091] ③ Cool the material to 70℃, adjust the dispersion speed to below 300r / min, add raw materials No. 6-8 in sequence, disperse for 5 minutes and enter the next process stage. The dispersion speed in this stage must be controlled below 300r / min;

[0092] ④ Cool the material to 30℃, adjust the dispersion speed to 500r / min, and finally add the raw material No. 9, disperse for 5 minutes and enter the next process stage;

[0093] ⑤ Vacuum degassing for 30 minutes before entering finished product inspection. After all indicators are qualified, packaging and shipment will be carried out.

[0094] The test results of the base coating are as follows Figure 4 .

[0095] Among them, the formula of the surface coating is as follows:

[0096]

[0097] The preparation method of the surface coating is as follows:

[0098] ① First add water to the production cylinder, turn on the high-speed disperser equipment, adjust the dispersion speed to 350r / min; add raw materials numbered 2-4 in sequence, adjust the dispersion speed to 400r / min, disperse and stir for 5 minutes and enter the next process stage;

[0099] ② Adjust the dispersion speed to 300r / min-500r / min (adjust according to the production volume), and enter the next process stage after dispersion for 15 minutes;

[0100] ③ Adjust the dispersion speed to below 300r / min, add raw materials No. 5-8 in sequence, disperse for 5 minutes and enter the next process stage. The dispersion speed in this stage must be controlled below 300r / min;

[0101] ④ Adjust the dispersion speed to 500r / min, finally add the raw materials No. 9-10, disperse for 5 minutes and enter the next process stage;

[0102] ⑤ Degassing at low speed for 30 minutes before entering finished product inspection. After all indicators are qualified, packaging and shipment will be carried out.

[0103] The test results of the surface coating are as follows Figure 5 .

[0104] Example 4

[0105] A silane-modified polyether waterproof coating comprises a primer and a surface coating.

[0106] Among them, the formula of the primer is as follows:

[0107]

[0108] The preparation method of the primer is as follows:

[0109] ① First, add the environmentally friendly plasticizer into the production cylinder, start the high-speed disperser equipment, and adjust the dispersion speed to 350r / min; add the raw materials numbered 2-5 in sequence, adjust the dispersion speed to 400r / min, disperse and stir for 5 minutes and enter the next process stage;

[0110] ②Heat the material to 120℃, adjust the dispersion speed to 800r / min-1200r / min (adjust according to the production volume), vacuum dehydrate for 3 hours, test the fineness and moisture, and enter the next process stage after the fineness is ≤35μm and the moisture is ≤500ppm;

[0111] ③ Cool the material to 70℃, adjust the dispersion speed to below 300r / min, add raw materials No. 6-8 in sequence, disperse for 5 minutes and enter the next process stage. The dispersion speed in this stage must be controlled below 300r / min;

[0112] ④ Cool the material to 30℃, adjust the dispersion speed to 500r / min, and finally add the raw material No. 9, disperse for 5 minutes and enter the next process stage;

[0113] ⑤ Vacuum degassing for 30 minutes before entering finished product inspection. After all indicators are qualified, packaging and shipment will be carried out.

[0114] The test results of the base coating are as follows Figure 6 .

[0115] Among them, the formula of the surface coating is as follows:

[0116]

[0117] The preparation method of the surface coating is as follows:

[0118] ① First add water to the production cylinder, turn on the high-speed disperser equipment, adjust the dispersion speed to 350r / min; add raw materials No. 2-4 in sequence, adjust the dispersion speed to 400r / min, disperse and stir for 5 minutes to enter the next process stage;

[0119] ② Adjust the dispersion speed to 300r / min-500r / min (adjust according to the production volume), and enter the next process stage after dispersion for 15 minutes;

[0120] ③ Adjust the dispersion speed to below 300r / min, add raw materials No. 5-8 in sequence, disperse for 5 minutes and enter the next process stage. The dispersion speed in this stage must be controlled below 300r / min;

[0121] ④ Adjust the dispersion speed to 500r / min, finally add raw materials No. 9-10, disperse for 5 minutes and enter the next process stage;

[0122] ⑤ Degassing at low speed for 30 minutes before entering finished product inspection. After all indicators are qualified, packaging and shipment will be carried out.

[0123] The test results of the surface coating are as follows Figure 7 .

[0124] Example 5

[0125] A silane-modified polyether waterproof coating comprises a primer and a surface coating.

[0126] Among them, the formula of the primer is as follows:

[0127]

[0128] The preparation method of the primer is as follows:

[0129] ① First, add the environmentally friendly plasticizer into the production cylinder, start the high-speed disperser equipment, and adjust the dispersion speed to 350r / min; add the raw materials numbered 2-5 in sequence, adjust the dispersion speed to 400r / min, disperse and stir for 5 minutes and enter the next process stage;

[0130] ②Heat the material to 120℃, adjust the dispersion speed to 800r / min-1200r / min (adjust according to the production volume), vacuum dehydrate for 3 hours, test the fineness and moisture, and enter the next process stage after the fineness is ≤35μm and the moisture is ≤500ppm;

[0131] ③ Cool the material to 70℃, adjust the dispersion speed to below 300r / min, add raw materials No. 6-8 in sequence, disperse for 5 minutes and enter the next process stage. The dispersion speed in this stage must be controlled below 300r / min;

[0132] ④ Cool the material to 30℃, adjust the dispersion speed to 500r / min, and finally add the raw material No. 9, disperse for 5 minutes and enter the next process stage;

[0133] ⑤ Vacuum degassing for 30 minutes before entering finished product inspection. After all indicators are qualified, packaging and shipment will be carried out.

[0134] The test results of the base coating are as follows Figure 8 .

[0135] Among them, the formula of the surface coating is as follows:

[0136]

[0137] The preparation method of the surface coating is as follows:

[0138] ① First add water to the production cylinder, turn on the high-speed disperser equipment, adjust the dispersion speed to 350r / min; add raw materials numbered 2-4 in sequence, adjust the dispersion speed to 400r / min, disperse and stir for 5 minutes and enter the next process stage;

[0139] ② Adjust the dispersion speed to 300r / min-500r / min (adjust according to the production volume), and enter the next process stage after dispersion for 15 minutes;

[0140] ③ Adjust the dispersion speed to below 300r / min, add raw materials No. 5-8 in sequence, disperse for 5 minutes and enter the next process stage. The dispersion speed in this stage must be controlled below 300r / min;

[0141] ④ Adjust the dispersion speed to 500r / min, finally add the raw materials No. 9-10, disperse for 5 minutes and enter the next process stage;

[0142] ⑤ Degassing at low speed for 30 minutes before entering finished product inspection. After all indicators are qualified, packaging and shipment will be carried out.

[0143] The test results of the surface coating are as follows Figure 9 .

[0144] Example 6

[0145] A silane-modified polyether waterproof coating comprises a primer and a surface coating.

[0146] Among them, the formula of the primer is as follows:

[0147]

[0148] The preparation method of the primer is as follows:

[0149] ① First, add the environmentally friendly plasticizer into the production cylinder, start the high-speed disperser equipment, and adjust the dispersion speed to 350r / min; add the raw materials numbered 2-5 in sequence, adjust the dispersion speed to 400r / min, disperse and stir for 5 minutes and enter the next process stage;

[0150] ②Heat the material to 120℃, adjust the dispersion speed to 800r / min-1200r / min (adjust according to the production volume), vacuum dehydrate for 3 hours, test the fineness and moisture, and enter the next process stage after the fineness is ≤35μm and the moisture is ≤500ppm;

[0151] ③ Cool the material to 70℃, adjust the dispersion speed to below 300r / min, add raw materials No. 6-8 in sequence, disperse for 5 minutes and enter the next process stage. The dispersion speed in this stage must be controlled below 300r / min;

[0152] ④ Cool the material to 30℃, adjust the dispersion speed to 500r / min, and finally add the raw material No. 9, disperse for 5 minutes and enter the next process stage;

[0153] ⑤ Vacuum degassing for 30 minutes before entering finished product inspection. After all indicators are qualified, packaging and shipment will be carried out.

[0154] The test results of this experiment are as follows Figure 10 .

[0155] Among them, the formula of the surface coating is as follows:

[0156]

[0157] The preparation method of the surface coating is as follows:

[0158] ① First add water to the production cylinder, turn on the high-speed disperser equipment, adjust the dispersion speed to 350r / min; add raw materials No. 2-4 in sequence, adjust the dispersion speed to 400r / min, disperse and stir for 5 minutes to enter the next process stage;

[0159] ② Adjust the dispersion speed to 300r / min-500r / min (adjust according to the production volume), and enter the next process stage after dispersion for 15 minutes;

[0160] ③ Adjust the dispersion speed to below 300r / min, add raw materials No. 5-8 in sequence, disperse for 5 minutes and enter the next process stage. The dispersion speed in this stage must be controlled below 300r / min;

[0161] ④ Adjust the dispersion speed to 500r / min, finally add raw materials No. 9-10, disperse for 5 minutes and enter the next process stage;

[0162] ⑤ Degassing at low speed for 30 minutes before entering finished product inspection. After all indicators are qualified, packaging and shipment will be carried out.

[0163] The test results of the surface coating are as follows Figure 11 .

[0164] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A silane-modified polyether waterproof coating, characterized in that: Including primer and topcoat; The base coating comprises, by weight: 20-35 parts of environmentally friendly plasticizer, 1-2.5 parts of titanium dioxide nano pigment, 40-50 parts of filler powder, 15-25 parts of resin and 3-5 parts of additive I; The surface coating comprises, by weight: 50-60 parts of emulsion, 35-45 parts of water and 3-5 parts of auxiliary agent II.

2. The silane-modified polyether waterproof coating according to claim 1, characterized in that: The nano pigment replacing titanium dioxide comprises nano aluminum silicate.

3. The silane-modified polyether waterproof coating according to claim 1, characterized in that: The resin is a silane-modified polyether resin; and the emulsion is a water-based modified acrylic ester emulsion.

4. The silane-modified polyether waterproof coating according to claim 3, characterized in that: The components of the silane-modified polyether resin include high molecular weight polyether diol, silane-modified polyurethane polymer terminated with siloxane groups and containing carbamate groups, and the solid content of the silane-modified polyether resin is 100%; The water-based modified acrylic ester emulsion comprises pure acrylic ester polymer, and the solid content of the water-based modified acrylic ester emulsion is 40-45%.

5. The silane-modified polyether waterproof coating according to claim 1, characterized in that: The filling powder includes one or more of titanium dioxide, kaolin or heavy calcium.

6. The silane-modified polyether waterproof coating according to claim 1, characterized in that: The auxiliary agent I includes one or more of a plasticizer, an ultraviolet light absorber, an ultraviolet light stabilizer, an antioxidant, a water scavenger, a silane coupling agent, a catalyst, a preservative, a wetting agent, a dispersant, a defoamer, a mildew preventer, an antifreeze agent, a film-forming aid, a multifunctional regulator, a thickener, or a leveling agent; The auxiliary agent II includes one or more of a plasticizer, an ultraviolet light absorber, an ultraviolet light stabilizer, an antioxidant, a water scavenger, a silane coupling agent, a catalyst, a preservative, a wetting agent, a dispersant, a defoamer, a mildewproof agent, an antifreeze agent, a film-forming aid, a multifunctional regulator, a thickener, or a leveling agent.

7. The silane-modified polyether waterproof coating according to claim 6, characterized in that: The preservative is kason and / or isothiazolinone; the wetting agent is octylphenol polyoxyethylene ether; the dispersant is sodium polyacrylate; the defoamer is liquid metal soap emulsion and / or mineral oil emulsion; the mildew inhibitor includes one or more of OIT, carbendazim or diuron; the antifreeze agent is ethylene glycol; the film-forming aid is dodecanol ester; the multifunctional regulator is 2-amino-2-methyl-1-propanol; the thickener includes one or more of hydrophobically modified alkali swelling thickener, polyurethane thickener or cellulose; the plasticizer is Plant ester environmentally friendly plasticizer; the ultraviolet absorber is 2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole; the ultraviolet stabilizer is bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate; the antioxidant is β-(3.5-di-tert-butyl, 4-hydroxyphenyl) propionate octadecyl alcohol ester; the water remover is vinyl trimethoxysilane; the silane coupling agent is N-2-aminoethyl-3-aminopropyl trimethoxysilane; the catalyst is tin; the leveling agent is polyurethane.

8. The method for preparing the silane-modified polyether waterproof coating according to any one of claims 1 to 7, characterized in that: Including the preparation of the base coating and the preparation of the surface coating; The preparation of the primer includes the following steps: Step A1: mixing the plasticizer and the filler powder, dispersing and stirring until no lumps are formed, to obtain a first mixed material; Step B1: Adding additive I to the first mixture, dispersing and stirring until the fineness of the filling powder is less than 35 μm, to obtain a second mixture; Step C1: heating the second mixture to 120° C. and vacuum dehydrating for 3 hours to obtain a third mixture; Step D1: the third mixed material is dispersed and stirred at a dispersion stirring speed of 450-500 r / min, and the temperature is cooled to 70° C., resin and auxiliary agent I are added to the third mixed material, dispersed and stirred to obtain a fourth mixed material; Step E1: the fourth mixed material is dispersed and stirred at a dispersion stirring speed of 350-400 r / min, and the temperature is cooled to 30° C., and the auxiliary agent I is added to the fourth mixed material, dispersed and stirred to obtain a base coating; The preparation of the topcoat comprises the following steps: Step A2: mixing and dispersing the auxiliary agent II and water to obtain a first mixed material II; Step B2: adding the emulsion to the first mixed material to obtain a second mixed material II; Step C2: the second mixed material II is dispersed and stirred at a dispersion stirring speed of 450-500 r / min, and an auxiliary agent II is added to the second mixed material II to obtain a third mixed material II; Step D2: The third mixed material II is dispersed and stirred at a dispersion stirring speed of 350-400 r / min, and an auxiliary agent II is added to the third mixed material II, dispersed and stirred to obtain a surface coating.

9. The method for preparing a silane-modified polyether waterproof coating system according to claim 8, characterized in that: The plasticizer in step A1 is a plant ester environmentally friendly plasticizer.

10. The method for preparing a silane-modified polyether waterproof coating system according to claim 8, characterized in that: In step B1, the auxiliary agent I includes a UV absorber, a UV stabilizer and an antioxidant; In step D1, the auxiliary agent I includes a dehydrating agent and a silane coupling agent; In step E1, the auxiliary agent I includes a catalyst; In step C2, the auxiliary agent II includes a film-forming auxiliary agent, a defoaming agent, a multifunctional regulator and a mildew preventive; The auxiliary agent II in step D2 includes a thickener and a leveling agent.

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