Production technology of polycarboxylate superplasticizer

A production process and technology of water reducing agent, applied in the field of production technology of polycarboxylate water reducing agent, can solve the problems of low water reducing rate, easy slump protection, strong temperature sensitivity, etc., achieve high water reducing rate and reduce carbonization The effect of depth, simple production process
CN104986984AInactive Publication Date: 2015-10-21HUBEI TENGCHEN TECH CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
HUBEI TENGCHEN TECH CO LTD
Publication Date
2015-10-21
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

A production technology of a polycarboxylate superplasticizer comprises the following steps: weighing the following components at weight ratio according to the technological process: 2500-2800 parts of methyl acrylic polyether (VPEG-2400), 120-150 parts of acrylic acid, 450-550 parts of hydroxyethyl acrylate, 3-8 parts of vitamin C, 15-25 parts of 3-mercaptopropionic acid, 15-25 parts of hydrogen peroxide with the volume concentration of 27.5% and 2750-3440 parts of deionized water. The raw materials of the polycarboxylate superplasticizer are rich in source, easy to acquire and relatively low in cost, the manufacturing technology is simple, the production conditions are mild, during production, no hazardous materials is emitted and lots of by-products cannot be produced, and the requirements for energy saving and environmental protection are satisfied. Besides, the produced polycarboxylate superplasticizer not containing chloride ions is non-corrosive to steel bars, high in adaptability, suitable for cement of various specifications and models, stable in performance, free from layering and sedimentation after being stored for a long time, crystallization-free in winter, nontoxic and pollution-free, and safe to the environment.
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Description

technical field

[0001] The invention relates to the field of chemical building materials, in particular to a production process of a polycarboxylate water reducer. Background technique

[0002] Polycarboxylate Superplasticizer (Polycarboxylate Superplasticizer) is a high-performance water-reducing agent and a cement dispersant in the application of cement concrete. Widely used in highways, bridges, dams, tunnels, high-rise buildings and other projects. The product is green, non-flammable and non-explosive, and can be safely transported by train and automobile. It can significantly increase the strength of concrete, improve the frost resistance and impermeability of concrete or reduce the amount of cement. Several water reducers commonly used in the market are: lignosulfonate sodium salt water reducer, naphthalene-based high-efficiency water reducer, aliphatic high-efficiency water-reducer, amino high-efficiency water-reducer, polycarboxylate high-performance water-reducer ...

Claims

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