Polysaccharide-modified hydrated calcium aluminosilicate nano crystalline nucleus suspension and preparation method thereof

A calcium aluminosilicate and nanocrystal technology, which is applied in the field of polysaccharide-modified hydrated calcium aluminosilicate nanocrystal nucleus suspension and its preparation, can solve the problem that the long-term dispersion stability of the hydrated calcium aluminosilicate crystal nucleus suspension is difficult to obtain. Guarantee and other problems, to achieve the effect of solving long-term dispersion stability, simple preparation process and use method, and small particle size

Active Publication Date: 2020-12-18
WUHAN UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, when polycarboxylate superplasticizer is used alone, the long-term dispersion sta

Method used

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  • Polysaccharide-modified hydrated calcium aluminosilicate nano crystalline nucleus suspension and preparation method thereof
  • Polysaccharide-modified hydrated calcium aluminosilicate nano crystalline nucleus suspension and preparation method thereof
  • Polysaccharide-modified hydrated calcium aluminosilicate nano crystalline nucleus suspension and preparation method thereof

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preparation example Construction

[0033] The embodiment of the present invention also provides a preparation method of a polysaccharide-modified calcium aluminosilicate hydrate nanocrystal nucleus suspension, the preparation method comprising the following steps:

[0034] (1) prepare materials according to the parts by weight of each raw material;

[0035] (2) Add the reaction stock solution to the reaction bottom solution synchronously. After the dropwise addition, stir the reaction under the alkaline condition of 5-60°C. After the reaction is completed, the calcium aluminosilicate hydrate nanocrystal nucleus suspension is obtained. ;

[0036] (3) Stirring and reacting the calcium aluminosilicate hydrate nano crystal nucleus suspension and the dispersion stabilization liquid at 10-60° C. to obtain the polysaccharide modified calcium aluminosilicate hydrate nano crystal nucleus suspension.

[0037]In an embodiment of the present invention, in step (2), the reaction stock solution is added dropwise to the reac...

Embodiment 1

[0046] Embodiment 1 of the present invention provides a kind of polysaccharide modified calcium aluminosilicate hydrate nanocrystal nucleus suspension, it comprises calcium aluminosilicate hydrate nanocrystal nucleus suspension and dispersion stabilization liquid, wherein:

[0047] The calcium aluminosilicate hydrate nanocrystalline nucleus suspension is prepared from the reaction stock solution and the reaction bottom liquid, and the mass ratio of the reaction stock solution and the reaction bottom liquid is 1.57:1;

[0048] The reaction stock solution includes the following components: 20 mL of calcium nitrate solution with a concentration of 2 mol / L, 20 mL of aluminum nitrate solution with a concentration of 0.02 mol / L and 20 mL of sodium silicate solution with a concentration of 2 mol / L;

[0049] The reaction bottom liquid includes the following components: 100mL of polycarboxylate superplasticizer aqueous solution with a mass fraction of 4%;

[0050] The dispersion stabil...

Embodiment 2

[0057] Embodiment 2 of the present invention provides a kind of polysaccharide modified calcium aluminosilicate hydrate nanocrystal nucleus suspension, it comprises calcium aluminosilicate hydrate nanocrystal nucleus suspension and dispersion stabilization liquid, wherein:

[0058] The calcium aluminosilicate hydrate nanocrystalline nucleus suspension is prepared from the reaction stock solution and the reaction bottom liquid, and the mass ratio of the reaction stock solution to the reaction bottom liquid is 3.24:1;

[0059] The reaction stock solution includes the following components: 20 mL of calcium formate solution with a concentration of 2 mol / L, 20 mL of an aluminum nitrate solution with a concentration of 0.06 mol / L, and 20 mL of a sodium fluorosilicate solution with a concentration of 2 mol / L;

[0060] The reaction bottom liquid includes the following components: 100mL of polycarboxylate superplasticizer aqueous solution with a mass fraction of 4%;

[0061] The disper...

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Abstract

The invention discloses polysaccharide modified hydrated calcium aluminosilicate nano crystalline nucleus suspension, which comprises hydrated calcium aluminosilicate nano crystalline nucleus suspension and dispersion stabilizing liquid, the hydrated calcium aluminosilicate nano crystalline nucleus suspension is prepared from a reaction stock solution and a reaction base solution, and the mass ratio of the reaction stock solution to the reaction base solution is 1.57-5.24: 1; wherein the reaction stock solution comprises soluble calcium salt, soluble silicate and soluble aluminum salt, and themolar ratio of the soluble calcium salt to the soluble silicate to the soluble aluminum salt is (0.2-1.8): 1: (0.01-0.5); the reaction base solution comprises a polycarboxylate superplasticizer; thedispersion stabilizing liquid comprises soluble polysaccharide; the mass ratio of the hydrated calcium aluminosilicate nano crystalline nucleus suspension to the soluble polysaccharide is (100-10000):1. The invention solves the problem of long-acting dispersion stability of the hydrated calcium silicate nano crystalline nucleus suspension in the prior art. The invention also provides a preparation method of the polysaccharide modified hydrated calcium aluminosilicate nano crystalline nucleus suspension.

Description

technical field [0001] The invention belongs to the technical field of building material admixtures, in particular to a polysaccharide-modified calcium aluminosilicate hydrate nanocrystal nucleus suspension and a preparation method thereof. Background technique [0002] With the rapid development of my country's engineering construction, the demand for building materials is increasing year by year. At the same time, with the rapid development of metallurgy, chemical industry, coal and electric power, and urban infrastructure construction in China, the amount of industrial solid waste and construction solid waste is also increasing year by year. The discharge of these wastes occupies a large amount of land resources, pollutes the environment and endangers human health. Using these bulk solid wastes for building materials can reduce the proportion of cement clinker in cement-based materials, reduce the cement industry’s consumption of ore energy, energy consumption of calcina...

Claims

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Application Information

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IPC IPC(8): C04B24/38C04B22/08C04B103/10
CPCC04B40/0039C04B2103/10C04B22/08C04B2103/302C04B24/38
Inventor 王发洲邹府兵胡传林胡曙光沈坤杰陶永征朱宏伟
Owner WUHAN UNIV OF TECH
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