Polycarboxylate-type water reducing agent as well as preparation method and application thereof

A technology of polycarboxylic acid series and water reducing agent, applied in the field of building materials, can solve the problems of high gas content and high reaction temperature of early strength polycarboxylic acid series water reducing agent
CN108239238AInactive Publication Date: 2018-07-03SHANGHAI DONGDA CHEM
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI DONGDA CHEM
Publication Date
2018-07-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a polycarboxylate-type water reducing agent as well as a preparation method and an application thereof. The polycarboxylate-type water reducing agent is prepared from the following raw materials in parts by mass: 100 parts of monomer A, 10-20 parts of liquid-state unsaturated carboxylic acid, 3-8 parts of unsaturated amide, 0.6-2 parts of initiator, 0.15-0.5 part of reducing agent, 0.6-2 parts of chain transfer agent, 8-20 parts of neutralizing agent and 80-150 parts of water. In the water reducing agent disclosed by the invention, through synergistic effect of the components, the surface tension can be adjusted to realize relatively low air entraining performance, bubbles mixed in the gel material are remarkably reduced, the product surface is denser and more beautiful, and the component strength is enhanced; the cement hydration process can be promoted to improve the early strength; and moreover, the dispersing power is enhanced, the water consumption for thegel material is reduced, the particles are dispersed, and the hydration degree is better.
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Description

technical field

[0001] The invention relates to the field of building materials, in particular to a polycarboxylate water reducer and its preparation method and application. Background technique

[0002] Water reducing agent, as an essential component in modern concrete besides cement, sand, stone, water and admixtures, has promoted the development of concrete technology. Polycarboxylate superplasticizers have flexible molecular designability, and can prepare superplasticizer products with different properties such as high slump retention, high water reduction, early strength, retardation, air-entraining or shrinkage reduction, etc., suitable for the preparation of high-strength, Concrete with properties such as ultra-high strength, high fluidity or high durability can meet the diverse needs of contemporary concrete, and has been unanimously praised by the engineering community. At the same time, its rich sources of raw materials and green production process have become a h...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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