High-performance polycarboxylate superplasticizer synthetized by low temperature method, and preparation method thereof

A technology of polycarboxylic acid and water reducing agent, which is applied in the field of low temperature synthesis of high-performance polycarboxylic acid water reducing agent and its preparation, can solve the problems of high energy consumption and achieve the effect of strong adaptability and stable performance
CN103553409AInactive Publication Date: 2014-02-05湖南加美乐素新材料股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
湖南加美乐素新材料股份有限公司
Publication Date
2014-02-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a high-performance polycarboxylate superplasticizer synthetized by a low temperature method, and a preparation method thereof. The high-performance polycarboxylate superplasticizer is in a liquid state; the solid content of the high-performance polycarboxylate superplasticizer is 40%; the high-performance polycarboxylate superplasticizer is the polycarboxylate superplasticizer which contains a sulfo group, an ester group, carboxyl, and a methyl allyl polyethenoxy ether side chain and is prepared from methyl allyl polyethenoxy ether, and monomers such as acrylic acid, dimethyl maleic anhydride and sodium methallyl sulfonate by sequentially carrying out polymerization and neutralization under the effects of a molecular chain initiator and a chain transfer agent. The high-performance polycarboxylate superplasticizer disclosed by the invention is low in alkali content, high in water-reducing rate and simple in production technology, and reaction conditions are easy to control; normal-temperature production, and energy conservation and consumption reduction are achieved; the environmental pollution is not generated.
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Description

technical field

[0001] The invention belongs to the field of concrete admixtures, and in particular relates to a high-performance polycarboxylate water reducer synthesized by a low-temperature method and a preparation method thereof. Background technique

[0002] Polycarboxylate superplasticizer is widely used because of its low dosage and high water-reducing rate. Its synthesis process is also very mature, and various new technologies emerge in endlessly, but most of them are synthesized at relatively high temperature. energy is greater. Through the selection of a suitable initiation system, the author synthesized the synthesis process of polycarboxylate high-performance water reducer under normal temperature conditions. This process overcomes the characteristics of slow temperature rise in winter and slow temperature drop in summer, which simplifies the production process and reduces equipment. It saves energy consumption, reduces the loss of production equipment, improve...

Claims

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