Carboxylate water reducing agent and preparation method thereof

A technology of water reducer and polycarboxylate, applied in the field of high performance polycarboxylate water reducer, can solve the problems of poor slump retention, low water reduction rate of products, complex production process of water reducer, etc., and achieve stable product performance , product adaptability, excellent performance and stable effect
CN103396031AActive Publication Date: 2013-11-20YUEYANG ORIENTAL YUHONG WATERPROOF TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YUEYANG ORIENTAL YUHONG WATERPROOF TECH
Publication Date
2013-11-20

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Abstract

The invention discloses a polycarboxylate water reducing agent, which is a water reducing agent containing side chains of carboxy, sulfo and polyoxyethylene and prepared from monomers such as allyl polyether, acrylic acid and / or derivatives thereof, sodium methallyl sulfonate and aliphatic mercapto acid through polymerization reaction of free radicals and neutralization under an H2O2-Vc oxidation-reduction initiating system. The polycarboxylate water reducing agent is low in alkali content, high in water reducing rate and labor-saving in concrete operation; a cement mixture has high flowability, high slump loss resistance and good workability; and the polycarboxylate water reducing agent serving as an important component of high-performance concrete can be widely applied to premixed and cast-in-place concrete of various industrial and civil buildings, and particularly, has excellent performance in high-strength concrete.
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Description

technical field

[0001] The invention relates to a novel high-performance polycarboxylate water reducer, which belongs to the field of chemical materials for building construction. Background technique

[0002] Compared with high-efficiency water-reducing agents such as naphthalene-based, melamine-based, and sulfamic acid salts, polycarboxylate-based water-reducers have more excellent performance, and the outstanding performance is low dosage, high water-reducing rate, fresh concrete fluidity and The characteristics of good slump retention, low shrinkage, great strengthening potential, and environmental friendliness have become the direction of development and application in recent years and even in the future. Its research and application have been highly valued by professional technicians and construction personnel at home and abroad. In recent years, our country has achieved rapid development in the research and application of polycarboxylate high-performance water reducer...

Claims

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