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Method for preparing geopolymer and organic macromolecule composite gelled material

A technology of composite cementitious materials and geopolymers, applied in cement production and other directions, can solve problems such as poor toughness, high brittleness, and environmental pollution from large-scale utilization, and achieve the effects of saving resources, saving energy, and high utilization rate of waste.

Inactive Publication Date: 2011-07-27
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the defects of high brittleness and poor toughness of existing geopolymer materials, in order to solve the problem of environmental pollution caused by the large-scale utilization and storage of industrial solid waste, the purpose of the present invention is to provide a kind of industrial solid waste steel slag or Preparation method of geopolymer and organic polymer composite gelling material with fly ash as main raw material and organic polymer as structural modifier

Method used

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  • Method for preparing geopolymer and organic macromolecule composite gelled material
  • Method for preparing geopolymer and organic macromolecule composite gelled material

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Example 1: Steel slag geopolymer and organic polymer composite cementitious material

[0030] Accurately take by weighing 1400g of steel slag, take this as the basis of measurement (100%); adopt the external mixing method, the dosage of sodium silicate is 20% of the weight of steel slag; the dosage of styrene / butyl acrylate copolymer emulsion is 0% of the weight of steel slag respectively % (control), 5%, 10%, 15%, 20% and 25%; the water-slag ratio is 0.36.

[0031] Sodium silicate is dissolved in water, and styrene / butyl acrylate copolymer emulsion is mixed into the solution at room temperature to form a stable high molecular alkaline solution.

[0032]Pour the steel slag into a double-rotation and double-speed slurry mixer for stirring, then add the polymer alkaline solution, stir at a high speed to form a uniformly mixed slurry, and put the slurry into a 40mm×40mm×160mm iron triple mold. Vibrate on the rubber sand vibrating table and scrape it flat with a scraper to...

Embodiment 2

[0036] Example 2: Preparation of fly ash geopolymer and organic polymer composite cementitious material

[0037] Accurately take by weighing fly ash 1200g, based on this (100%); Adopt external blending method, sodium silicate dosage is 22% of flyash weight; Styrene / butyl acrylate copolymer emulsion dosage is powder respectively 0% (control), 5%, 10%, 15%, 20% and 25% of the weight of coal ash; the water-cement ratio is 0.36.

[0038] Sodium silicate is dissolved in water, and styrene / butyl acrylate copolymer emulsion is mixed into the solution at room temperature to form a stable high molecular alkaline solution.

[0039] Pour the fly ash into the double-rotation and double-speed slurry mixer for stirring, then add the polymer alkaline solution, stir at a high speed to form a uniformly mixed slurry, and put the slurry into a 40mm×40mm×160mm iron triple mold middle. Vibrate on the glue sand vibrating table and scrape it flat with a scraper to obtain the molded fly ash geopoly...

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Abstract

The invention discloses a method for preparing a geopolymer and organic macromolecule composite gelled material. In the method, slag or fly ash capable of providing geopolymer components and styrene / butyl acrylate copolymer emulsion are utilized to produce a slag or fly ash geopolymer and organic macromolecule composite gelled material under the action of silicate excitants; wherein the amount ofstyrene / butyl acrylate copolymer emulsion is 5-25 percent of the weight of phosphatic slag or slag, and the amount of the alkali excitant sodium silicate is 20-22 percent of the weight of the phosphatic slag or slag; and the flexural strength of the geopolymer polymer and organic macromolecule composite is superior to the inorganic aluminosilicate polymer in 28-day age, and the 28-day maximum flexural strength is 1.76 times of that of the inorganic aluminosilicate polymer. The preparation process has no discharge of waste water, waste gas and waste slag, does not need heating, is green, environment-friendly and energy-saving, reduces the consumption, and is one effective approach for large-scale resource utilization of industrial solid wastes.

Description

technical field [0001] The invention belongs to the preparation of inorganic-organic composite materials, in particular to a preparation method of geopolymer and organic macromolecule composite gelling material. Background technique [0002] China is a large energy country dominated by coal resources. Currently, the annual discharge of fly ash produced by coal combustion reaches 200 million tons. At the same time, my country is also a large iron and steel country. The slag and steel slag discharged by iron and steel plants are about 100 million tons each year. tons; more than 10 million tons of phosphorus slag are discharged annually from refining yellow phosphorus. The long-term placement of these waste residues not only takes up a lot of fertile land and destroys the ecology; but also long-term exposure to the sun and rain will pollute groundwater sources and rivers and lakes, causing serious environmental pollution. It is used as an inorganic aluminosilicate polymer glue w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/26C04B7/26C04B7/147
CPCC04B28/008C04B28/28Y02P40/10
Inventor 张耀君李圣徐德龙宋强吴永超吴勇张建文曹李红王亚超
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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