Polycarboxylate water-reducer and preparation method thereof

A technology of water reducing agent and polycarboxylic acid, which is applied in the field of polycarboxylic acid water reducing agent and its preparation, can solve the problems of freeze-thaw resistance and insufficient durability, and achieve excellent performance and good effect

Inactive Publication Date: 2019-05-14
四川宇砼建材有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, most of the water reducing agents are polycarboxylate water reducing agent series. This series has a more prominent effect on water reducing effect, but after it is added to concrete, the civil engineering and building materials used in it have poor freeze-thaw resistance and durability. sexual inadequacy

Method used

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  • Polycarboxylate water-reducer and preparation method thereof
  • Polycarboxylate water-reducer and preparation method thereof

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Embodiment Construction

[0034] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the present invention implementation, but not all implementations. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention. In the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined arbitrarily with each other.

[0035] The polycarboxylate water reducer of this application can be prepared by the following steps:

[0036] 1) Mix acrylic acid, sodium chloride, calcium chloride and ammonium sulfate according ...

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Abstract

The invention relates to the field of concrete additives, in particular to a polycarboxylate water-reducer and a preparation method thereof. The polycarboxylate water-reducer is prepared from the following components in parts by weight: 100 parts of acyclic acid, 25-40 parts of sodium chloride, 25-40 parts of calcium chloride, 10-20 parts of ammonium sulfate, 10-20 parts of phenolic resin and 10-20 parts of sodium tripolyphosphate. In addition to having excellent water reduction performance, the polycarboxylate water-reducer further has relatively good effect on freeze-thaw resistance and durability.

Description

technical field [0001] The invention relates to the field of concrete admixtures, in particular to a polycarboxylate water reducer and a preparation method thereof. Background technique [0002] Water reducer is a concrete admixture that can reduce the amount of mixing water while maintaining the slump of concrete. Most of them are anionic surfactants, such as lignosulfonate, naphthalenesulfonate formaldehyde polymer, etc. After being added to the concrete mixture, it can disperse the cement particles, improve its workability, reduce the unit water consumption, improve the fluidity of the concrete mixture; or reduce the unit cement consumption and save cement. [0003] At present, most of the water reducing agents are polycarboxylate water reducing agent series. This series has a more prominent effect on water reducing effect, but after it is added to concrete, the civil engineering and building materials used in it have poor freeze-thaw resistance and durability. Sexually...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/30C04B24/26C04B103/30C04B103/60
Inventor 刘允伟廖思淘邹锋
Owner 四川宇砼建材有限公司
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