Efficient water reducing agent and preparation method thereof
A high-efficiency water reducing agent and aqueous solution technology, applied in the field of concrete admixture preparation, can solve the problems of small slump change over time, high water reducing rate, low energy consumption, etc., to achieve improved slump protection effect, small conveying resistance, Strong antifreeze effect
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[0015] The present invention will be further described below in combination with specific embodiments.
[0016] A high-efficiency water reducer and its preparation method, its raw materials include 40-60 parts of ethylene oxide, 40-60 parts of propylene oxide, 5-10 parts of methallyl alcohol, 5 parts of prenyl alcohol in parts by weight. -10 parts, 20-35 parts of acrylic acid, 20-35 parts of methyl acrylate, 20-35 parts of butyl acrylate, 20-35 parts of methyl methacrylate, 2-4 parts of mercaptoethanol, 2-4 parts of carving white powder , 2-4 copies of vitamin C;
[0017] Its preparation process comprises the following steps:
[0018] The first step is to prepare the polyether type I intermediate: replace the reactor with nitrogen for 5 minutes to reduce the oxygen content in the container, then add 5-10 parts of methallyl alcohol and 5-10 parts of KOH solution to configure the reaction For the starting solution, raise the temperature to 95-105°C, stir and add a mixture of 1...
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