Water reducing agent and preparation method thereof, antifreeze agent and use thereof, and concrete
A water reducer and antifreeze technology, applied in the field of antifreeze, can solve the problems of high water-binder ratio at the interface between aggregate and mortar, poor workability of concrete, and high risk of freezing at the interface, achieving excellent water reducing effect and improving early strength Peaceful function, the effect of reducing the risk of freezing
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[0063] In another aspect of the present invention, the present invention provides a preparation method of the aforementioned water reducing agent. The method includes: reacting after mixing the raw materials to obtain the water reducing agent. Therefore, the preparation method is simple, the operation is convenient, and the realization is easy.
[0064] In some embodiments of the invention, the reaction is carried out at 60-80°C. As a result, the temperature of synthesizing the superplasticizer is lower, which is conducive to saving energy.
[0065] It should be noted that the raw materials of the water reducing agent are the same as those described above, and will not be repeated here.
[0066] In another aspect of the present invention, the present invention provides an antifreeze. The antifreeze comprises the following raw materials: the water reducing agent and non-oxidizing salts prepared by the aforementioned water reducing agent or the aforementioned preparation meth...
Embodiment 1
[0095] The synthetic method of water reducing agent is as follows:
[0096] (1) The raw materials for synthesizing water reducing agent include the following: isoprenol polyoxyethylene ether (molecular weight 4000), allyl alcohol polyoxyethylene ether (molecular weight 2400), acrylic acid, maleic anhydride, mercaptopropionic acid, hydrogen peroxide, vitamins C and deionized water, wherein the molar ratio of prenol polyoxyethylene ether to allyl alcohol polyoxyethylene ether is 1:0.5, and the molar ratio of prenol polyoxyethylene ether to acrylic acid is 1:7, The molar ratio of isopentenol polyoxyethylene ether and maleic anhydride is 1:0.5, the mole ratio of isopentenol polyoxyethylene ether and mercaptopropionic acid is 1:0.15, and the ratio of isopentenol polyoxyethylene ether and hydrogen peroxide is 1:0.15. The molar ratio is 1:0.2, and the molar ratio of hydrogen peroxide to vitamin C is 1:0.2.
[0097] (2) The step of synthesizing the water reducing agent comprises the ...
Embodiment 2
[0105] The synthetic method of water reducing agent is as follows:
[0106] (1) The raw materials for synthesizing superplasticizers include the following: isoprenol polyoxyethylene ether (molecular weight 4500), allyl alcohol polyoxyethylene ether (molecular weight 2000), acrylic acid, maleic anhydride, mercaptopropionic acid, hydrogen peroxide, vitamins C. Deionized water, wherein the molar ratio of prenol polyoxyethylene ether to allyl alcohol polyoxyethylene ether is 1:0.8, the molar ratio of prenol polyoxyethylene ether to acrylic acid is 1:6, and The molar ratio of pentenol polyoxyethylene ether and maleic anhydride is 1:1, the molar ratio of isopentenol polyoxyethylene ether and mercaptopropionic acid is 1:0.15, and the mole ratio of isopentenol polyoxyethylene ether and hydrogen peroxide The ratio is 1:0.25, and the molar ratio of hydrogen peroxide to vitamin C is 1:0.2.
[0107] (2) The step of synthesizing the water-reducing agent comprises the following steps: addi...
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