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High-strength geopolymer closed-cell foam material prepared from silicon carbide, and preparation method thereof

A technology of geopolymers and foaming materials, which is applied in the field of manufacturing new porous inorganic non-metallic materials, can solve the problems of low strength of foam materials, difficult control of pore structure, uneven foaming, etc., so as to improve thermal insulation effect, increase Density, effect of promoting dispersion and reaction

Active Publication Date: 2020-12-11
ZHEJIANG UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the deficiencies of uneven foaming, difficult control of pore structure and low foam strength caused by foaming agents such as organic matter and hydrogen peroxide in the prior art, the present invention provides a high-strength polymer closed-cell foaming material prepared by silicon carbide And the preparation method thereof can effectively control the foaming strength, the number of foams and the pore size, and obtain a rich closed-cell structure, and the preparation method is simple, fast, and environmentally friendly

Method used

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  • High-strength geopolymer closed-cell foam material prepared from silicon carbide, and preparation method thereof
  • High-strength geopolymer closed-cell foam material prepared from silicon carbide, and preparation method thereof
  • High-strength geopolymer closed-cell foam material prepared from silicon carbide, and preparation method thereof

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Embodiment 1

[0029] A high-strength geopolymer closed-cell foaming material prepared by silicon carbide, including 15 parts of metakaolin, 10 parts of ordinary Portland cement, 15 parts of fly ash, 10 parts of silica fume, 10 parts of sodium hydroxide solid, silicon 50 parts of sodium acid solution, 20 parts of quartz powder, 4 parts of mica powder, 2 parts of polyacrylonitrile fiber, 8 parts of silicon carbide powder, 3 parts of aluminum powder, 3 parts of sodium lauryl sulfate, 0.5 parts of grinding aid, and 10 parts of ionized water.

[0030] The water content of sodium silicate solution is 60%; the average particle size of quartz powder is 60 microns; the average particle size of mica powder is 400 microns; the particle size of silicon carbide powder is 50-100 nm; the diameter of polyacrylonitrile fiber is 10- 20 microns, the length is 4-6 mm; the average particle size of aluminum powder is 10 microns.

[0031] A method for preparing a high-strength geopolymer closed-cell foam materia...

Embodiment 2

[0039]A high-strength geopolymer closed-cell foaming material prepared by silicon carbide, including 18 parts of metakaolin, 10 parts of ordinary portland cement, 15 parts of fly ash, 12 parts of silica fume, 12 parts of sodium hydroxide solid, silicic acid 45 parts of sodium solution, 18 parts of quartz powder, 1 part of mica powder, 1 part of polyvinyl alcohol fiber, 1 part of polyamide fiber, 10 parts of silicon carbide powder, 3 parts of aluminum powder, 2.5 parts of sodium lauryl sulfate, grinding aid 0.5 parts of agent, 10 parts of deionized water.

[0040] The water content of the sodium silicate solution is 65%; the average particle size of the quartz powder is 55 microns; the average particle size of the mica powder is 350 microns; the particle size of the silicon carbide powder is 350-400 nanometers; 40 microns, the length is 6-8 mm; the diameter of polyamide fiber is 20-30 microns, the length is 4-6 mm; the average particle size of aluminum powder is 10 microns.

...

Embodiment 3

[0049] A high-strength geopolymer closed-cell foaming material prepared by silicon carbide, including 20 parts of metakaolin, 10 parts of ordinary Portland cement, 12 parts of fly ash, 15 parts of silica fume, 12 parts of sodium hydroxide solid, silicon 48 parts of sodium acid solution, 18 parts of quartz powder, 2 parts of mica powder, 2 parts of polyvinyl alcohol fiber, 10 parts of silicon carbide powder, 4 parts of aluminum powder, 2 parts of sodium lauryl sulfate, 0.5 parts of grinding aid, and 12 parts of ionized water.

[0050] The water content of sodium silicate solution is 55%; the average particle size of quartz powder is 65 microns; the average particle size of mica powder is 370 microns; the particle size of silicon carbide powder is 150-200 nm; the diameter of polyvinyl alcohol fiber is 10- 20 microns, the length is 5-7 mm; the average particle size of aluminum powder is 15 microns.

[0051] A method for preparing a high-strength geopolymer closed-cell foam mater...

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Abstract

The invention discloses a high-strength geopolymer closed-cell foam material prepared from silicon carbide. The high-strength geopolymer closed-cell foam material comprises the following raw materialsin parts by weight: 45-60 parts of silicon-aluminum mineral raw material, 10-15 parts of sodium hydroxide solid, 45-60 parts of sodium silicate solution, 15-25 parts of quartz powder, 2-4 parts of mica powder, 2-3 parts of organic fiber, 8-12 parts of silicon carbide powder, 3-4 parts of aluminum powder, 3-5 parts of lauryl sodium sulfate, 0.4-0.6 part of a grinding aid, and 10-15 parts of deionized water. The invention also discloses a preparation method of the high-strength geopolymer closed-cell foam material prepared from silicon carbide. According to the invention, the geopolymer foamingmaterial which mainly comprises closed pores, is uniform in pore distribution and is controllable in pore size is prepared by regulating and controlling the ratio of the raw materials, the content ofsilicon carbide and the particle size of silicon carbide; and the silicon carbide, the quartz powder, the mica powder, the organic fibers and the compound raw materials are used, so that the foamingmaterial has the properties of low density, high mechanical strength, high toughness, strong high-temperature resistance and corrosion resistance.

Description

technical field [0001] The invention belongs to the technical field of manufacturing novel porous inorganic non-metallic materials, and in particular relates to a high-strength closed-cell geopolymer foam material prepared by silicon carbide and a preparation method thereof. Background technique [0002] Geopolymer (Geopolymer) is an inorganic gelling material formed by activating a silicon-aluminum compound raw material with a base activator. The concept was first proposed by J.Davidovits in the late 1990s, and the corresponding research has developed rapidly since then. The field of new geopolymer building materials has broad application prospects, not only because of its high strength, corrosion resistance, and high temperature resistance, but also because of its green and low-carbon production process, which is in line with the sustainable development concept advocated by the country. [0003] Porous geopolymers can be used as lightweight materials in the fields of filt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/20C04B111/40
CPCC04B28/04C04B2111/00017C04B2111/00258C04B2111/00793C04B2111/2046C04B2111/40C04B2201/10C04B2201/20C04B2201/50C04B14/106C04B18/08C04B18/146C04B22/062C04B22/00C04B14/06C04B14/20C04B16/0658C04B22/04C04B24/16C04B38/02C04B2103/52C04B16/0641C04B16/0691
Inventor 闫东明方宏远李杉陈士堃阮圣倩刘毅
Owner ZHEJIANG UNIV
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