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Whisker toughened and reinforced geopolymer and preparation method thereof

A geopolymer and whisker technology, applied in the field of whisker toughened and reinforced geopolymers, to achieve good economic and environmental benefits, improve surface energy, and increase strength

Inactive Publication Date: 2020-07-17
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there is no report on the modification of geopolymers by using whiskers

Method used

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  • Whisker toughened and reinforced geopolymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A whisker-toughened and reinforced polymer, prepared from the following raw materials in parts by weight: 100 parts of silicon-aluminum raw materials (metakaolin: fly ash=2:1, weight ratio), 80 parts of activator (sodium hydroxide and water glass with a modulus of 3.3 in a weight ratio of 1:4), whisker (potassium titanate whisker) 1 part, dispersant (calcium lignosulfonate) 0.3 part.

[0016] The preparation method of whisker-toughened and reinforced geopolymer: Add whiskers and dispersant to the activator, mechanically stir for 15 minutes, and then ultrasonically disperse for 30 minutes to obtain a suspension; add silicon-aluminum raw materials to the suspension, 50r / After stirring for 1 minute at a speed of 200r / min, stir for 3 minutes at a speed of 200r / min to obtain a slurry, inject the slurry into a mold for molding, and then maintain it at 25°C and a relative humidity of 90% for 24 hours, demould, continue Curing for 28 days under the conditions of 25°C and 90% r...

Embodiment 2

[0018] A whisker-toughened polymer is prepared from the following raw materials in parts by weight: 100 parts of silicon-aluminum raw materials (metakaolin: fly ash=2:1), 80 parts of activator (sodium hydroxide and modulus Water glass weight ratio of 3.3 is a mixture of 1:4), whiskers (potassium titanate whiskers) 4 parts, dispersant (sodium dodecylsulfonate) 0.1 parts.

[0019] The preparation method of the whisker-toughened polymer is the same as that in Example 1.

Embodiment 3

[0021] A whisker-toughened polymer is prepared from the following raw materials in parts by weight: 100 parts of silicon-aluminum raw materials (metakaolin: fly ash=2:1), 80 parts of activator (sodium hydroxide and modulus Water glass weight ratio of 3.3 is a mixture of 1:4), whiskers (potassium titanate whiskers) 6 parts, dispersant (sodium dodecylsulfonate) 0.15 parts.

[0022] The preparation method of the whisker-toughened polymer is the same as that in Example 1.

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Abstract

The invention relates to a whisker toughened and reinforced geopolymer which is prepared from the following raw materials in parts by weight: 100 parts of a silicon-aluminum raw material, 35-80 partsof an excitant, 1-9 parts of whiskers and 0.03-0.3 part of a dispersing agent, wherein the excitant is a mixture of sodium hydroxide and water glass with the modulus of 3.0-3.5 in a weight ratio of 1:4-1: 5. According to the preparation method, the geopolymer is modified by adopting the whiskers; after the whiskers are added, harmful holes of the geopolymer can be effectively filled; according tothe present invention, the polymer network structure is filled with the filler, the bridging effect is provided, the material interface is increased so as to improve the surface energy of the matrix,effectively prevent the generation and the expansion of cracks, and improve the mechanical property of the geopolymer, the geopolymer has characteristics of improved strength, high strength, good toughness, good high temperature resistance, and high product added value. The geopolymer disclosed by the invention is rich in main raw material source and low in cost, can realize effective utilizationof industrial solid wastes, and has good economic benefits and environmental protection benefits.

Description

technical field [0001] The invention relates to a geopolymer, in particular to a whisker-toughened and reinforced geopolymer, which belongs to the technical field of geopolymers. Background technique [0002] Geopolymer is a three-dimensional network skeleton structure composed of silicon oxide tetrahedron and aluminum oxygen tetrahedron sharing oxygen atoms through "dissolution-monomer reconstruction-condensation" under the action of activator, and has a similar crustal structure. Inorganic polymeric aluminosilicate materials of some natural mineral structures. Compared with the production of ordinary Portland cement, the geopolymer production process not only consumes less energy, which is about 30% of ordinary Portland cement; but also emits less harmful gases, CO 2 The emission is only 9% of ordinary Portland cement; at the same time, a large amount of industrial waste, such as fly ash and coal gangue, can be used. The geopolymer cementitious material itself has excell...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B14/38C04B111/28
CPCC04B28/006C04B2111/28C04B2201/50C04B14/106C04B18/08C04B22/062C04B12/04C04B14/383C04B24/18C04B24/16Y02P40/10
Inventor 张长森李杨穆子枫魏铭王雪韩朋德顾海成
Owner YANCHENG INST OF TECH
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