Production method of polycarboxylic acid high-performance water reducing agent for concrete pipe pile

Abstract

The invention belongs to the technical field of concrete water reducing agents, and particularly relates to a production method of a polycarboxylic acid high-performance water reducing agent for a concrete tubular pile. Theproduction method comprises the following steps: S1, adding water, methyl allyl alcohol polyoxyethylene ether and isopentenol polyoxyethylene ether into a reaction kettle, stirring by using a stirring device to dissolve, regulating the temperature to 50-65 DEG C, and reacting for 2-3 hours, wherein the ratio of n(methylallyl alcohol polyoxyethylene ether) to n(isopentenolpolyoxyethylene ether) is 1:1.5-1:2. According to the production method, the reaction kettle is divided into the upper kettle body and the lower kettle body, which are fixedly connected through the heat-resistant folding rubber pipe, so that when the pressure in the reaction kettle is too high, the electromagnet is powered off, the L-shaped clamping rod is separated from the interior of the limitingassembly, then the upper kettle body and the lower kettle body are separated, and the upper kettle body moves upwards at the moment; therefore, the inner space of the reaction kettle is increased, thepressure is reduced and explosion is avoided; in addition, the heat-resistant folding rubber pipe used for connecting the upper kettle body and the lower kettle body can be used as a space for releasing heat and pressure.

Description

technical field [0001] The invention belongs to the technical field of concrete water reducers, in particular to a production method of polycarboxylate high-performance water reducers for concrete pipe piles. Background technique [0002] Water reducer is a concrete admixture that can reduce the amount of mixing water while maintaining the slump of concrete basically unchanged. Most of them are anionic surfactants, such as lignosulfonate, naphthalenesulfonate formaldehyde polymer, etc. After being added to the concrete mixture, it can disperse the cement particles, improve its workability, reduce the unit water consumption, improve the fluidity of the concrete mixture; or reduce the unit cement consumption and save cement. [0003] According to the chemical composition, the superplasticizer is usually divided into: lignin sulfonate superplasticizer, naphthalene superplasticizer, melamine superplasticizer, sulfamate superplasticizer, fatty acid It is a high-efficiency water...

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Problems solved by technology

[0005] In order to make up for the deficiencies of the prior art and solve the problem that the chemical reaction generates a large amount of heat, which leads to an increase in the pressure in the reactor, which leads to poor control of the reaction temperature and even an explosion, the invention proposes a polycarboxylic acid high Production method of performance water reducer

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