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A kind of geopolymer excited by organic base and preparation method thereof

A geopolymer and organic base technology, applied in the polymer field, can solve the problems of alkali infiltration and poor solidification at room temperature, achieve good social benefits and application significance, excellent performance, and improve the effect of reaction speed.

Active Publication Date: 2021-06-25
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problem of poor curing effect of alkali seepage and normal temperature, the present invention utilizes unsaturated organic quaternary ammonium base excitation and later photocuring to obtain geopolymers with excellent properties

Method used

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  • A kind of geopolymer excited by organic base and preparation method thereof
  • A kind of geopolymer excited by organic base and preparation method thereof
  • A kind of geopolymer excited by organic base and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] A kind of preparation method of the geological polymer excited by organic base, comprises the following steps:

[0060] (1) Pulverize the fly ash to 200 mesh;

[0061] (2) Add 0.04 parts of octylphenol polyoxyethylene ether, 16 parts of water glass, 10 parts of unsaturated quaternary ammonium base, and 2 parts of lignin into 20 parts of deionized water, stir evenly, and let stand for 24 hours to obtain an alkali activator;

[0062] (3) Add 50 parts of pulverized coal ash in (1) and disperse for about 25 minutes;

[0063] (4) Add 0.4 parts of initiator methyl benzoylformate to (3), stir with a mixer at 1200r / min for 12min until evenly stirred, place an oscillating table for oscillating for 15min, then place in a mold, after 2h, irradiate with ultraviolet light for 5 Minutes, and then cured at room temperature for 72 hours, the organic base-activated geopolymer was obtained.

[0064] The above "parts" are all parts by weight, and the following examples are the same, unl...

Embodiment 2

[0066] A kind of preparation method of the geological polymer excited by organic base, comprises the following steps:

[0067] (1) Pulverize the fly ash to 200 mesh;

[0068] (2) Add 0.05 parts of octylphenol polyoxyethylene ether, 15 parts of water glass, 15 parts of unsaturated quaternary ammonium alkali, and 5 parts of lignin into 18 parts of deionized water, stir evenly, and let stand for 24 hours to obtain an alkali activator;

[0069] (3) Add 48 parts of pulverized coal ash in (1) again, and disperse for about 25 minutes;

[0070] (4) Add 0.5 parts of initiator trimethylbenzoylphenyl phosphonate ethyl ester to (3), stir with a mixer at 1200r / min for 12min until evenly stirred, place on an oscillating table for 15min, then place in a mold for 2h Afterwards, ultraviolet light was irradiated for 5 minutes, and then cured at room temperature for 72 hours to obtain the geopolymer excited by organic base.

Embodiment 3

[0072] A kind of preparation method of the geological polymer excited by organic base, comprises the following steps:

[0073] (1) Pulverize the fly ash to 200 mesh;

[0074] (2) Add 0.04 parts of octylphenol polyoxyethylene ether, 18 parts of water glass, 12 parts of unsaturated quaternary ammonium base, and 2 parts of lignin into 22 parts of deionized water, stir evenly, and let stand for 24 hours to obtain an alkali activator;

[0075] (3) Add 100 parts of pulverized fly ash in (1) and disperse for 15 to 30 minutes;

[0076] (4) Add 0.6 parts of initiator 1-hydroxycyclohexyl phenyl ketone to (3), stir with a mixer at 1200r / min for 12mins until evenly stirred, place on an oscillating table to oscillate for 15mins, and then place it in a mold for 2-2.5h Afterwards, ultraviolet light was irradiated for 5 minutes, and then cured at room temperature for 72 hours to obtain the geopolymer excited by organic base.

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Abstract

The invention belongs to the field of polymers, in particular to a geopolymer, and also to a preparation method of the geopolymer. A geopolymer excited by an organic base is characterized in that the polymer is based on low-carbon fly ash and / or slag ash, water glass or sodium silicate or silica sol as the main raw material, and a water-soluble unsaturated organic base It is obtained by polymerization with ammonium persulfate or potassium persulfate as the initiator. The beneficial effect of the invention is that the use of unsaturated organic base and initiator can significantly reduce the alkali seepage problem of the geopolymer, increase the reaction speed, and prepare the geopolymer with excellent performance, which has good practical application significance. The method of repolymerization stimulated by unsaturated organic quaternary ammonium bases solves the problem of easy seepage of inorganic bases, and accelerates the reaction to obtain geopolymers composited with organic and inorganic substances, which has good social benefits and application significance.

Description

technical field [0001] The invention belongs to the field of polymers, in particular to a geopolymer, and also to a preparation method of the geopolymer. Background technique [0002] CN108975735A discloses an energy storage geopolymer, prepared from the following raw materials: [0003] Fly ash: 20-100 parts by weight; slag: 10-20 parts by weight; natron: 20-50 parts by weight; sodium hydroxide: 5-30 parts by weight. The preparation method of the above-mentioned energy storage geopolymer comprises the following steps: [0004] A) mixing 20-50 parts by weight of fly ash and 10-20 parts by weight of slag to obtain a powder material; [0005] B) 20-50 parts by weight of natron and 5-30 parts by weight of sodium hydroxide are prepared into natron solution and sodium hydroxide solution respectively; [0006] C) mixing the powder material, the natron solution and the sodium hydroxide solution, and performing curing after casting to obtain an energy storage geopolymer. [0007...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/24C04B7/28C04B12/00
CPCY02P40/10
Inventor 万祥龙陈智博胡凯强高美玲赖声发
Owner ANHUI UNIV OF SCI & TECH