A kind of raw soil building wall reinforcement and protection agent and preparation method thereof
A technology for strengthening protective agents and building walls, which is applied in the direction of coatings, etc., and can solve the problems of undiscovered silicone-modified acrylate emulsion raw soil building wall protection enhancers, etc., and achieve good emulsion stability and dilution stability. The effect of good membrane properties and fast permeation rate
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Embodiment 1
[0027] With butyl acrylate, methyl methacrylate, hydroxyethyl methacrylate, silane coupling agent KH-570 and tung oil as comonomers, the mass ratio is 15:15:3:3:0.3; the mass fraction is Add 80% deionized water and 4% composite surfactant into a three-necked flask and heat at 50°C for 30 min to mix evenly. Add 1 / 3 of comonomer and stir for 30 min to form a stable emulsion. Initiator with a mass fraction of 1 / 3, slowly heat up to 80~85°C for emulsion polymerization reaction, when the system appears blue fluorescence, react for about 1~1.5 h, and slowly add the remaining 2 / 3 comonomer (including all tung oil) and the remaining 2 / 3 initiator (dropping is completed in about 2 h); react for about 1.5 h, when the comonomer remains about 1 / 4 of the original volume, quickly add the silane coupling agent KH-570, continue React for about 1.5 h. After the reaction is over, cool the system temperature to below 40°C, adjust the pH of the system to 7~8 with 30% ammonia water, filter the mat...
Embodiment 2
[0029]Butyl acrylate, methyl methacrylate, hydroxyethyl methacrylate, silane coupling agent KH-570 and tung oil are used as comonomers, and the mass ratio is 15:15:3:3:0.6. Add 80% deionized water and 4% composite surfactant into a three-neck flask and heat at 40°C for 20 minutes to mix evenly. Add 1 / 3 of the comonomer and stir for 40 minutes to form a stable emulsion. Finally, add an initiator accounting for 1 / 3 of the mass fraction, and slowly raise the temperature to 80~85°C for emulsion polymerization. When the system appears blue fluorescence, react for about 1~1.5 h, and slowly add the remaining 2 / 3 of the copolymerization monomer dropwise. Initiator and the remaining 2 / 3 of the initiator (dropping is completed in about 2 hours); react for about 1.5 hours, when the comonomer remains about 1 / 4 of the original volume, quickly add the silane coupling agent KH-570 and all the tung oil , continue to react for about 1.5 h, after the reaction, cool the system temperature to bel...
Embodiment 3
[0031] Butyl acrylate, methyl methacrylate, hydroxyethyl methacrylate, silane coupling agent KH-570 and tung oil are used as comonomers, and the mass ratio is 15:15:3:3:0.9. Add deionized water with a mass fraction of 80% and a composite surfactant with a mass fraction of 4% into a three-necked flask and heat at 60°C for 40 minutes to mix evenly, add 1 / 3 of the comonomer (including the proportion of tung oil), and stir After forming a stable emulsion after 50 min, add an initiator accounting for 1 / 3 of the mass fraction, and slowly raise the temperature to 80-85°C for emulsion polymerization. When the system appears blue fluorescence, react for about 1-1.5 h, and slowly add the remaining 2 / 3 of the comonomer (containing the proportion of tung oil) and the remaining 2 / 3 of the initiator (dropping is completed in about 2 hours); the reaction is about 1.5 hours, and when the comonomer remains about 1 / 4 of the original volume, it will quickly Add the silane coupling agent KH-570 a...
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