A kind of preparation method of star polycarboxylate water reducer

A technology of polycarboxylate and water reducer, which is applied in the field of preparation of star-shaped polycarboxylate water reducer, can solve the problems of easy formation of cross-linked polymers, high price, uncontrollable reaction, etc., achieve simple process and solve the problem of preparation difficult effect
CN106519143BActive Publication Date: 2018-01-26GUIZHOU DR SHI TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUIZHOU DR SHI TECH
Publication Date
2018-01-26

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Abstract

The invention provides a preparation method of a star-shaped polycarboxylate water reducer and belongs to the technical field of polycarboxylate water reducers for concrete. According to the star-shaped polycarboxylate water reducer, double-bond monomers, a multi-perssad nucleating agent, an initiating agent and end double-bond polyoxylethylene ether are used as raw materials and subjected to a polymeric reaction to obtain the star-shaped polycarboxylate water reducer. According to the technical scheme provided by the invention, pentaerythritol tris(3-mercaptopropionic acid)ester, triethanolamine tris(3-mercaptopropionic acid)ester, glucose tetra(3-mercaptopropionic acid)ester and ethylene diamine(3-mercaptopropionic acid)ester serve as the nucleating agent, and the star-shaped polycarboxylate water reducer is prepared and obtained. The yield of a star-shaped structure can be increased. Meanwhile, the preparation method is simple in process and suitable for industrial production.
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Description

technical field

[0001] The invention relates to the technical field of polycarboxylate water reducer for concrete, in particular to a preparation method of a star-shaped polycarboxylate water reducer. Background technique

[0002] Due to the large degree of freedom of the molecular structure, the polycarboxylate superplasticizer can be structurally designed according to the required properties to form a variety of special polycarboxylate products, which can better meet the new requirements constantly put forward by concrete. Compared with superplasticizers, it has strong vitality. The star-shaped molecular structure of the polycarboxylate superplasticizer brings infinite vitality to the polycarboxylate superplasticizer and opens a door for the improvement of the performance of the polycarboxylate superplasticizer. Practice has proved that the star-shaped polycarboxylate superplasticizer Compared with the comb structure, the molecule has higher water reduction rate, better s...

Claims

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