Preparation method of polycarboxylate-type high-performance water reducing agent

Abstract

The invention belongs to the technical field of water reducing agents, and particularly relates to a preparation method of a polycarboxylate-type high-performance water reducing agent. The method comprises the following steps: step 1, preparing a polycarboxylate-type water reducing agent solution; step 2, performing heating the solution, and collecting water reducing agent particles; and step 3, grinding the polycarboxylate-type water reducing agent particles: grinding the polycarboxylate-type water reducing agent particles to obtain polycarboxylate-type water reducing agent powder, and filling and sealing the polycarboxylate-type water reducing agent powder. The step 2 is completed by adopting a polycarboxylate-type high-performance water reducing agent preparation device in a matching manner. According to the method, the evaporation of water in the polycarboxylate-type water reducer solution and the precipitation speed of the polycarboxylate-type water reducer are increased, and theprocessing efficiency is improved. The collecting process of the polycarboxylate-type high-performance water reducing agent particles is convenient to operate and sufficient in collection.

Description

technical field [0001] The invention belongs to the technical field of water reducers, and in particular relates to a preparation method of a polycarboxylic acid-based high-performance water reducer. Background technique [0002] Water reducer is a concrete admixture that reduces the amount of mixing water while maintaining the slump of the concrete basically unchanged; most water reducers are anionic surfactants, such as lignosulfonate and naphthalenesulfonate formaldehyde polymer etc. After adding the water reducer, it can disperse the cement particles, improve its working performance, reduce the unit water consumption, and improve the fluidity of the concrete mixture. Polycarboxylate superplasticizer is a high-performance superplasticizer, widely used in highways, bridges, dams, tunnels, high-rise buildings and other projects. In the preparation process of the polycarboxylate water reducer, it is necessary to prepare the polycarboxylate water reducer solution first, and...

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Problems solved by technology

[0004] The present invention provides a method for preparing a polycarboxylate-based high-performance water-reducer, aiming to solve the following problems in the preparation process of the current polycarboxylate-based water-reducer: (1) Currently, polycarboxylate-based water-reducers are When the solution is heated, the solution is placed in the tank body, the solution in the tank body is heated unevenly, the water evaporates slowly, the precipitation of the polycarboxylic acid-based water reducer is slow, and the processing efficiency is low; (2) the tank body After the water in the polycarboxylate-based water-reducer solution evaporates completely, the precipitated polycarboxylate-based water-reducer particles adhere to the inner wall of the tank, and the collection process is inconvenient and insufficient.

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