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Solid defoamer for cement-based grouting materials and preparation method thereof

A technology of solid defoaming agent and grouting material, which is applied in the field of chemical building materials, can solve the problems of strong alkali resistance and anti-attenuation and long-term stability, and achieve the effects of low cost, delayed release, and simple operation

Inactive Publication Date: 2017-12-26
SUZHOU XINGBANG CHEM BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a special solid defoamer product for cement-based grouting materials, which overcomes the limitations of existing solid defoamers, and the defects of strong alkali resistance and anti-decay long-term stability, and develops a suitable Alkaline system for cement concrete

Method used

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  • Solid defoamer for cement-based grouting materials and preparation method thereof
  • Solid defoamer for cement-based grouting materials and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as figure 1 As shown, the present invention provides a solid defoamer for cement-based grouting material, the defoamer is composed of defoamer particles 1 and a protective film 2 wrapped on the defoamer particles 1, the protective film 2 It is a water-soluble polymer film, and the protective film 2 includes the following raw materials in weight percentage: polyvinyl alcohol 60%, cellulose ether 35% and coloring agent 5%.

[0050] Wherein, the polyvinyl alcohol is PVA17-88; the cellulose ether is hydroxyethyl cellulose; and the colorant is a water-soluble organic color paste.

[0051] The defoamer particles 1 include the following raw materials in parts by weight: 20 parts of polyether-modified silicone active components and 80 parts of carriers, and the diameter of the defoamer particles 1 is 0.1-0.2 mm.

[0052] Wherein, the raw materials of the polyether-modified silicone active component include reactants, catalysts, white carbon black and emulsifiers, the reac...

Embodiment 2

[0063] Such as figure 1 As shown, the present invention provides a solid defoamer for cement-based grouting material, the defoamer is composed of defoamer particles 1 and a protective film 2 wrapped on the defoamer particles 1, the protective film 2 It is a water-soluble polymer film, and the protective film 2 includes the following raw materials in weight percentage: polyvinyl alcohol 72%, cellulose ether 25% and coloring agent 3%.

[0064] Wherein, the polyvinyl alcohol is PVA17-92; the cellulose ether is hydroxymethyl hydroxyethyl cellulose; and the colorant is a water-soluble organic color paste.

[0065] The defoamer particles 1 include the following raw materials in parts by weight: 25 parts of polyether-modified silicone active components and 75 parts of carriers, and the diameter of the defoamer particles 1 is 0.2-0.4 mm.

[0066] Wherein, the raw materials of the polyether-modified silicone active component include reactants, catalysts, white carbon black and emulsif...

Embodiment 3

[0077] Such as figure 1 As shown, the present invention provides a solid defoamer for cement-based grouting material, the defoamer is composed of defoamer particles 1 and a protective film 2 wrapped on the defoamer particles 1, the protective film 2 It is a water-soluble polymer film, and the protective film 2 includes the following raw materials in weight percentage: 80% polyvinyl alcohol, 19% cellulose ether and 1% coloring agent.

[0078] Wherein, the polyvinyl alcohol is PVA17-99; the cellulose ether is a mixture of hydroxypropylmethylcellulose and hydroxyethylmethylcellulose; and the colorant is a water-soluble organic color paste.

[0079] The defoamer particles 1 include the following raw materials in parts by weight: 30 parts of polyether-modified silicone active components and 70 parts of carriers, and the diameter of the defoamer particles 1 is 0.4-0.5 mm.

[0080] Wherein, the raw materials of the polyether-modified silicone active component include reactants, cata...

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Abstract

The invention discloses a solid defoamer for cement-based grouting materials. The defoamer is composed of defoamer particles and a protective film wrapping the defoamer particles, and the protective film is a water-soluble polymer film. Accordingly, the invention also discloses a preparation method of the solid defoamer for cement-based grouting materials. The defoamer with excellent alkali resistance is made directed at the special use conditions of cement-based grouting materials, the surfaces of the solid particles are wrapped with the protective film, thus effectively delaying the release of defoamer effective components and prolonging the product shelf life, during use, the solid defoamer can be quickly dissolved in a water phase and rapidly release effective components to play a defoaming role.

Description

technical field [0001] The invention relates to the technical field of chemical building materials, in particular to a solid defoamer for cement-based grouting materials and a preparation method thereof. Background technique [0002] Cement-based grouting material is a ready-mixed mortar prepared by aggregate, cement and additives in a certain proportion. Its quality is stable and reliable. It is mainly used for grouting installation equipment to effectively transfer loads. It has developed rapidly in recent years. It is one of the new building materials widely promoted at present. [0003] The composition of cement-based grouting material contains various additives such as water reducer, expansion agent, early strength agent, water retention agent, etc. During use, there will inevitably be problems such as air bubbles that are not easy to discharge, and certain amounts will also be absorbed during the mixing process. A large amount of gas, if these bubbles cannot be discha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C04B20/10C04B103/50
CPCC04B24/42C04B20/1096C04B2103/50C04B20/1048C04B20/1033
Inventor 陶鹃毛荣良许如源余振新
Owner SUZHOU XINGBANG CHEM BUILDING MATERIALS
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