Polymer-cement water-resisting admixture

An additive and polymer technology, applied in the field of cement, can solve the problems of high cost, aging resistance, difficult construction and operation, etc., and achieve the effect of low production cost, cost reduction and strong price advantage.

Inactive Publication Date: 2015-12-02
TONGLING HAIYUAN SUPERFINE POWDER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 3. Liquid resin also has many problems such as storage and transportation inconvenience
[0007] For a long time, asphalt, linoleum and organic materials have been the main waterproof materials. Some materials are poisonous and odorous, difficult to operate and not resistant to aging.
For this reason, several kinds of rigid waterproof coatings have been introduced successively in China, but the cost is relatively high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1, a polymer cement waterproof additive, the parts by weight of various components are as follows: 5 parts of polyvinyl alcohol, 5 parts of methyl acrylate, 3 parts of emulsion polystyrene butadiene rubber, sodium silicate or partial silicon 3 parts of sodium dodecyl sulfonate, 2 parts of sodium dodecyl sulfonate, 2 parts of nano-silica, 4 parts of vinyl methyl ester, and 3 parts of initiator.

[0015] Its preparation method is as follows:

[0016] 1) Dissolve polyvinyl alcohol into water;

[0017] 2) Add ethyl acrylate to the solution and stir for 10 minutes;

[0018] 3) Continue to add polystyrene butadiene rubber to the solution and stir for 20 minutes;

[0019] 4) Add ethylene methyl ester to the solution and stir for 5 minutes;

[0020] 5) Add sodium silicate or metasilicate, sodium dodecylsulfonate and nano silicon dioxide to the solution, and stir for 10 minutes;

[0021] 6) Add the initiator to the solution and stir for 5 minutes;

[0022] 7) Put th...

Embodiment 2

[0024] Example 2, a polymer cement waterproof additive, the parts by weight of various components are as follows: 7 parts of polyvinyl alcohol, 7 parts of methyl acrylate, 4 parts of emulsion polystyrene butadiene rubber, sodium silicate or partial silicon 4 parts of sodium dodecyl sulfonate, 3 parts of sodium dodecyl sulfonate, 3 parts of nano-silica, 5 parts of vinyl methyl ester, and 4 parts of initiator.

[0025] Its preparation method is as follows:

[0026] 1) Dissolve polyvinyl alcohol into water;

[0027] 2) Add ethyl acrylate to the solution and stir for 25 minutes;

[0028] 3) Add ethylene methyl ester to the solution and stir for 10 minutes;

[0029] 4) Continue to add polystyrene butadiene rubber to the solution and stir for 45 minutes;

[0030] 5) Add sodium silicate or metasilicate, sodium dodecylsulfonate and nano silicon dioxide to the solution, and stir for 20 minutes;

[0031] 6) Add the initiator to the solution and stir for 8 minutes;

[0032] 7) Put t...

Embodiment 3

[0034] Example 3, a polymer cement waterproof additive, the parts by weight of various components are as follows: 6 parts of polyvinyl alcohol, 6 parts of methyl acrylate, 3 parts of emulsion polystyrene butadiene rubber, sodium silicate or partial silicon 4 parts of sodium dodecyl sulfonate, 3 parts of sodium dodecyl sulfonate, 2 parts of nano-silica, 5 parts of vinyl methyl ester, and 3 parts of initiator.

[0035] Its preparation method is as follows:

[0036] 1) Dissolve polyvinyl alcohol into water;

[0037] 2) Add ethyl acrylate to the solution and stir for 15 minutes;

[0038] 3) Add ethylene methyl ester to the solution and stir for 8 minutes;

[0039] 4) Continue to add polystyrene butadiene rubber to the solution and stir for 30 minutes;

[0040] 5) Add sodium silicate or metasilicate, sodium dodecylsulfonate and nano silicon dioxide to the solution, and stir for 15 minutes;

[0041] 6) Add the initiator to the solution and stir for 7 minutes;

[0042] 7) Put th...

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Abstract

The invention discloses a polymer-cement water-resisting admixture. The polymer-cement water-resisting admixture is prepared from the following ingredients in parts by weight: 5-7 parts of polyvinyl alcohol, 5-7 parts of methyl acrylate, 3-4 parts of emulsion polymerized butadiene styrene rubber, 3-4 parts of sodium silicate or sodium metasilicate, 2-3 parts of sodium dodecyl sulfonate, 2-3 parts of nano-silica, 4-5 parts of ethylene methyl ester and 3-4 parts of initiator. According to the polymer-cement water-resisting admixture, the polymer-cement water-resisting admixture suitable for waterproof cement is obtained by preparing a copolymer from polyvinyl alcohol and polyacrylate by adopting a free-radical polymerization method, making full use of respective advantages of polyvinyl alcohol and polyacrylate and enabling the copolymer to be combined with emulsion polymerized butadiene styrene rubber, ethylene methyl ester, sodium silicate or sodium metasilicate, sodium dodecyl sulfonate and nano-silica. The production cost of the raw materials used by the polymer-cement water-resisting admixture is lower than that of current commercially-available waterproof emulsions, and the cost can be further reduced during large-batch production, so that the product disclosed by the invention has a relatively strong price advantage.

Description

technical field [0001] The invention relates to the field of cement, in particular to a cement additive for waterproofing. Background technique [0002] The polymers used to prepare polymer cement waterproof concrete can be divided into three types, namely polymer emulsions, water-soluble polymers, and liquid resins. At present, the most commonly used and the best modification effect is polymer emulsion. [0003] 1. The main components of polymer emulsion are polymer particles (size 0.1-1μm), emulsifier, stabilizer, dispersant, etc., and its solid phase content is between 40% and 70%. The polymer particles are uniformly dispersed in the aqueous solution through the action of the emulsifier to form an emulsion, and under the action of the dispersant and the stabilizer, the emulsion can be kept for a long time without segregation and flocculation. In addition, in order to prevent the air bubbles brought in by the emulsion from affecting the quality of the concrete, a certa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/26C08F261/04C08F220/18
Inventor 王东蒋海托刘英汪清王玉舟
Owner TONGLING HAIYUAN SUPERFINE POWDER
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