A kind of superhydrophobic hybrid emulsion for concrete and preparation method thereof
A technology of concrete and emulsion, applied in the direction of coating, etc., can solve the problems of poor environmental protection, high construction requirements, hindering market promotion, etc., and achieve the effect of promoting the discharge of air bubbles and water bubbles and preventing surface defects
Active Publication Date: 2022-07-01
天津冶建特种材料有限公司 +1
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Problems solved by technology
However, the stencil paint currently on the market is poor in environmental protection and has extremely high construction requirements, which hinders the promotion of the market
Method used
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Embodiment 1
[0041] A preparation method of a superhydrophobic hybrid emulsion for concrete, comprising the following steps:
[0042] Step 1 is to mix 9g of 4-chlorobutene, 22g of γ-aminopropyltriethoxysilane and 70g of N,N-dimethylformamide, then fully stir, and then evaporate the solvent to dryness after the reaction at 80°C for 10 hours to obtain the function. Sex monomer M;
[0043] Step 2 is to add 12g of the obtained functional monomer M, 20g of methyl methacrylate, 15g of butyl acrylate, and 20g of dodecafluoroheptyl methacrylate to 40g of butyl acetate at 90° C. After mixing, fully stir until Dissolve completely, then dropwise add 0.15g of azobisisobutyronitrile for 20 minutes to it, and keep stirring for 1.5 hours and then keep warm for 2 hours to obtain a polymer product;
[0044] Step 3 is to mix the described 40g polymer product with 60g water, 2g emulsifier (the mass ratio of Tween 80 and sodium dodecylbenzenesulfonate is 2:1) and stir at a high speed of 2500 r / min for 2 hour...
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Abstract
The invention provides a super-hydrophobic hybrid emulsion for concrete and a preparation method thereof. Step 1 is to mix allyl-type halogenated olefin, γ-aminopropyltriethoxysilane and N,N-dimethylformamide After mixing, fully stir, and after the reaction is completed, the solvent is evaporated to obtain functional monomer M; Step 2 is to add the obtained functional monomer M, methyl methacrylate, butyl acrylate, and dodecafluoroheptyl methacrylate into the mixture. In the heated butyl acetate, fully stir to dissolve completely after mixing, then add azobisisobutyronitrile dropwise thereto, and obtain a polymer product after stirring reaction; step 3 is to mix the polymer product with water and an emulsifier After high-speed stirring, micro-silicon dioxide and nano-silica are added to it, and the superhydrophobic hybrid emulsion for concrete of the present invention is obtained after rapid stirring, which is hard, bright and superhydrophobic after being brushed on the template to form a film , Anti-fouling, effectively promote the discharge of blisters and blisters, and prevent the formation of concrete surface defects.
Description
technical field [0001] The invention belongs to the field of concrete, in particular to a superhydrophobic hybrid emulsion for concrete and a preparation method thereof. Background technique [0002] The superhydrophobicity phenomenon mainly comes from the silt of lotus leaves without staining. The superhydrophobic surface has the advantages of self-cleaning, metal anticorrosion, anti-icing, waterproofing, etc. It has become one of the hotspots in materials research. It has huge application prospects. [0003] At present, the process of preparing superhydrophobic materials is mainly realized by constructing roughness on the surface of low surface energy materials or modifying low surface energy materials to fabricate micro-nano structures on the rough surface. The process is cumbersome, and special equipment is required in some industries. Moreover, the superhydrophobic surface is very fragile, because the microscopic rough structure of the surface is easily destroyed durin...
Claims
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IPC IPC(8): C08F220/14C08F220/24C08F220/18C08F230/08C09D133/12C09D133/16C09D7/61
CPCC08F220/14C08F220/24C09D143/04C09D7/61C09D7/70C08K2201/011C08F220/1804C08F230/085C08K3/36C08K7/26
Inventor 王雪敏吴志刚樊伟刘伟郭诚杨雪超
Owner 天津冶建特种材料有限公司