CN111439941B - Composition for preparing inorganic polymer material and preparation method of material - Google Patents
Composition for preparing inorganic polymer material and preparation method of material Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B12/00—Cements not provided for in groups C04B7/00 - C04B11/00
- C04B12/005—Geopolymer cements, e.g. reaction products of aluminosilicates with alkali metal hydroxides or silicates
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/006—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mineral polymers, e.g. geopolymers of the Davidovits type
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/52—Sound-insulating materials
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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Abstract
The invention relates to the field of building materials, and discloses a composition for preparing an inorganic polymer material, which comprises 73.6-91.9 wt% of aluminum-silicon raw material, 4-17 wt% of crystallization enhancer, 4-9 wt% of soluble alkali metal compound and 0.1-0.4 wt% of foaming agent based on the total weight of the composition. The invention also discloses a preparation method of the inorganic polymer material based on the composition. The inorganic polymer material prepared by the composition has lower manufacturing cost and better compression resistance after high-temperature treatment; meanwhile, the composite material has better strength performance, fire resistance and heat insulation performance, and no harmful gas is generated and pulverized in the high-temperature heating process.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a composition for preparing an inorganic polymer material. In addition, the invention also discloses a preparation method of the inorganic polymer material.
Background
With the emphasis on the resources and energy utilization efficiency of buildings, green, environment-friendly, heat-insulating and fireproof materials are receiving more and more attention. At present, various fireproof materials adopted in the market have different degrees of problems in the production and use processes. Although the magnesium oxychloride cement has good fire resistance, the magnesium oxychloride cement needs to be pressed and processed at high temperature, so the production cycle is long and the production efficiency is low; furthermore, the use of magnesium chloride binders can cause corrosion and rust formation in metal materials in contact with the materials during use. The perlite small plates are generally spliced by a plurality of small plates, the paving process consumes time and labor, the paving efficiency is low, and the fireproof performance of the perlite small plates is reduced due to gaps in the paving process. The aged rock wool board is harmful to human body and does not accord with the idea of green environmental protection. Although the strength of the common cement-based material used at present reaches a certain requirement, the strength of the common cement-based material is greatly reduced after being heated, the original supporting or protecting effect cannot be maintained, and the production and the use of the common cement-based material cause a large amount of energy consumption and carbon dioxide emission.
Disclosure of Invention
The invention aims to solve the technical problem of providing a composition for preparing an inorganic polymer material and a preparation method of the material, wherein the inorganic polymer material prepared by the composition has lower manufacturing cost and better compression resistance after high-temperature treatment; meanwhile, the composite material has higher strength performance, fire resistance and heat insulation performance, and no harmful gas is generated and pulverization is avoided in the high-temperature heating process.
In order to achieve the above object, a first aspect of the present invention provides a composition for preparing an inorganic polymer material, comprising 73.6 to 91.9% by weight of an aluminum-silicon raw material, 4 to 17% by weight of a crystallization enhancer, 4 to 9% by weight of a soluble alkali metal compound, and 0.1 to 0.4% by weight of a foaming agent, based on the total weight of the composition.
Preferably, the aluminum-silicon raw material is fly ash and/or metakaolin;
the soluble alkali metal compound is alkali metal hydroxide and/or alkali metal silicate;
the foaming agent is a plant protein foaming agent, an animal protein foaming agent, a surfactant foaming agent or a composite foaming agent.
Further preferably, the fly ash has a calcium oxide content of less than or equal to 10 wt%;
the metakaolin has a particle size of less than or equal to 74 microns.
Further preferably, the aluminum-silicon raw material is fly ash.
Preferably, the crystallization enhancer is one or more of mullite whisker, mullite powder and nepheline.
In a second aspect, the present invention provides a method for preparing an inorganic polymer material, comprising the steps of:
(1) mixing a silicon-aluminum raw material, a crystallization reinforcing agent, a soluble alkali metal compound and water to prepare a gel material;
mixing a foaming agent with water to generate foam, and mixing the foam with the gel material to obtain a mixed material;
(2) pouring the mixed material obtained in the step (1) into a mould, curing, demoulding and maintaining to obtain the inorganic polymer material;
the aluminum-silicon composite material comprises, by taking the total usage of a silicon-aluminum raw material, a crystallization reinforcing agent, a soluble alkali metal compound and a foaming agent as a reference, 73.6-91.9 wt% of the silicon-aluminum raw material, 4-17 wt% of the crystallization reinforcing agent, 4-9 wt% of the soluble alkali metal compound, 0.1-0.4 wt% of the foaming agent and 32-38 wt% of water based on the total weight of the silicon-aluminum raw material, the crystallization reinforcing agent, an alkali metal and the foaming agent.
Preferably, the aluminum-silicon raw material is fly ash and/or metakaolin;
the soluble alkali metal compound is alkali metal hydroxide and/or alkali metal silicate;
the foaming agent is a plant protein foaming agent, an animal protein foaming agent, a surfactant foaming agent or a composite foaming agent;
the crystallization reinforcing agent is one or more of mullite whisker, mullite powder and nepheline.
Further preferably, the fly ash has a calcium oxide content of less than or equal to 10 wt%;
the metakaolin has a particle size of less than or equal to 74 microns.
Preferably, in the step (2), the curing temperature is 20-85 ℃, and the curing time is 20-28 h; the curing temperature is 20-85 ℃, and the normal-temperature curing time is 1-27 days.
Further preferably, the aluminum-silicon raw material is fly ash.
Further preferably, the steps further comprise: treating the inorganic polymer material prepared in the step (2) at a high temperature of 700 ℃ and 1000 ℃.
Further preferably, the high-temperature treatment time is 2-4 h.
Through the technical scheme, the invention has the beneficial effects that:
1. the crystallization reinforcing agent is added into the composition provided by the invention, and the prepared inorganic polymer material has excellent fire resistance, better compression resistance after being subjected to high temperature, no harmful gas generated under the condition of high temperature or heating, and no pulverization.
2. The inorganic polymer provided by the invention has good absorption effect on low-frequency sound waves with the frequency of 40-150Hz, and the wave absorption coefficient is 0.6-0.95.
3. The polymer with low production energy consumption and very low carbon dioxide emission is used as a cementing material, and the production energy consumption is only 1/6-1/4 of cement production, so that the cement-based foam concrete is more environment-friendly compared with the common cement-based foam concrete.
4. The dry density of the inorganic polymer material provided by the invention is 623-935kg/m3The thermal conductivity coefficient is 0.16-0.23W/m.K, the compressive strength is 6.1-8.2MPa, the compressive strength after high temperature is 6.4-14.1MPa, and the dry bulk density is 571-864kg/m3The inorganic polymer material has a thermal conductivity of 0.14-0.21W/(m.K), which is less than the requirement value (less than or equal to 0.27W/(mK)) of the national foam concrete industry standard JG/T266-2011 on the thermal conductivity of A10-level foam concrete.
Detailed Description
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.
In a first aspect, the present invention provides an inorganic polymeric material comprising 73.6 to 91.9% by weight of an aluminium silicon starting material, 4 to 17% by weight of a crystallisation enhancer, 4 to 9% by weight of a soluble alkali metal compound and 0.1 to 0.4% by weight of a blowing agent, based on the total weight of the composition.
According to the invention, the type of the aluminum-silicon raw material is selected conventionally in the field, for example, the aluminum-silicon raw material can be one or more of fly ash, metakaolin and slag, preferably fly ash and/or metakaolin. The type of soluble alkali metal compound is a matter of routine choice in the art, and preferably an alkali metal hydroxide and/or an alkali metal silicate is employed. The foaming agent can adopt any foaming agent, and is preferably a plant protein foaming agent, an animal protein foaming agent, a surfactant foaming agent or a composite foaming agent.
The surfactant foaming agent can be any surfactant capable of playing a foaming role, and specifically can be dodecyl sulfate or other surfactants. The composite foaming agent can be a mixture of a plant protein foaming agent and an animal protein foaming agent, and can also be a mixture of a surfactant. Preferably, the composite foaming agent is a mixture of a plant type cement foaming agent of the Wihai Hancheng building materials science and technology limited company and a MasterCel 30 foaming agent of the BASF company, and the mixing ratio of the plant type cement foaming agent to the MasterCel 30 foaming agent is 1: 1.
Specifically, when the soluble alkali metal compound is alkali metal hydroxide and/or alkali metal silicate, the alkali metal hydroxide and/or alkali metal silicate are respectively prepared into aqueous solutions, then the aluminum-silicon raw material is mixed with the alkali metal hydroxide aqueous solution, and then the alkali metal silicate aqueous solution and water are added for stirring. When the silicon-aluminum raw materials are two or more than two, the two or more than two silicon-aluminum raw materials can be uniformly mixed and then the subsequent operation is carried out.
Preferably, the soluble alkali metal compounds are alkali metal hydroxides and alkali metal silicates. The alkali metal hydroxide may be sodium hydroxide and/or potassium hydroxide, and the alkali metal silicate may be sodium silicate and/or potassium silicate. When the alkali metal silicate is formulated as an aqueous solution, its modulus is 2.
Preferably, the fly ash is low-calcium fly ash. That is, the fly ash has a calcium oxide content of less than or equal to 10 wt%. Further preferably, the aluminum-silicon raw material is fly ash. The metakaolin has a particle size of less than or equal to 74 microns. When the soluble alkali metal compound is an alkali metal hydroxide and an alkali metal silicate, the mass ratio of the alkali metal hydroxide and the alkali metal silicate is further 1: 5.5.
The crystallization enhancer can be any compound capable of playing a crystallization enhancing role, and is preferably one or more of mullite whisker, mullite powder and nepheline.
In a second aspect, the present invention provides a method for preparing an inorganic polymer material, comprising the steps of:
(1) mixing a silicon-aluminum raw material, a crystallization reinforcing agent, a soluble alkali metal compound and water to prepare a gel material;
mixing a foaming agent with water to generate foam, and mixing the foam with the gel material to obtain a mixed material;
(2) pouring the mixed material obtained in the step (1) into a mould, curing, demoulding and maintaining to obtain the inorganic polymer material;
the aluminum-silicon composite material comprises, by taking the total usage of a silicon-aluminum raw material, a crystallization reinforcing agent, a soluble alkali metal compound and a foaming agent as a reference, 73.6-91.9 wt% of the silicon-aluminum raw material, 4-17 wt% of the crystallization reinforcing agent, 4-9 wt% of the soluble alkali metal compound, 0.1-0.4 wt% of the foaming agent and 32-38 wt% of water based on the total weight of the silicon-aluminum raw material, the crystallization reinforcing agent, an alkali metal and the foaming agent.
The mixing mass ratio of the foaming agent to the water is 0.01-0.1:1, and preferably 0.025: 1.
The aluminum-silicon raw material can be one or more of fly ash, metakaolin and slag, and preferably the fly ash and/or metakaolin. The soluble alkali metal compound may be an alkali metal hydroxide and/or an alkali metal silicate. The foaming agent can adopt any foaming agent, and is preferably a plant protein foaming agent, an animal protein foaming agent, a surfactant foaming agent or a composite foaming agent. The crystallization reinforcing agent is one or more of mullite whisker, mullite powder and nepheline.
Further preferably, the fly ash has a calcium oxide content of less than 10 wt%; the metakaolin has a particle size of less than or equal to 74 microns. The mass solubility of the alkaline metal aqueous solution is 10-35%.
Preferably, in the step (2), the curing temperature is 20-85 ℃, and the curing time is 20-28 h; the curing temperature is 20-85 ℃, and the normal-temperature curing time is 1-27 days. More preferably, the curing time is 24 h. The setting of these parameters can of course be adjusted according to the actual production situation.
Further preferably, the aluminum-silicon raw material is fly ash. The steps further include: and (3) treating the inorganic polymer material prepared in the step (2) at the high temperature of 700 ℃ and 1000 ℃ for 2-4 h.
The present invention will be described in detail below by way of examples.
In the following examples, the dry bulk density is measured after drying the crushed test specimens in a drying oven at 105 ℃ for 24 hours according to the American Standard ASTM C495; the compressive strength of the concrete standard cubic test piece is measured by using a Meits MTS universal tester (model C43.304) according to the Chinese national standard GB/T50081-2016; the flexural strength of the concrete standard prism test piece is measured by using a Meitess MTS universal tester (model C43.304) according to the Chinese national standard GB/T50081-2016; the thermal conductivity was measured by a transient planar heat source method, discs of 53 mm diameter and 15 mm thickness were cut from the test piece as samples, all the samples were polished flat and parallel and cleaned with compressed air, and the thermal conductivity was measured using a Hot Disk thermal conductivity meter-2500. The wave absorption coefficient is measured by an anti-impedance tube method, according to the American standard ASTM E1050, a sample is cut into small blocks with the thickness of 25mm, then the small blocks with the diameter of 95mm are ground into small blocks, the small blocks are placed in a specimen holder, and the acoustic anti-impedance tube, two microphones and a digital frequency analysis system are used for measuring, wherein the measuring frequency is 0-1600 Hz. .
The F-class fly ash and the C-class fly ash are purchased from tower-capacity power stations in Queensland, Australia; slag and metakaolin are available from Australian Cement company (Cement Australia Pty Ltd); NaOH, KOH are available from Science essences, Inc., sodium silicate and potassium silicate are U.S. PQ corporation drugs; the plant protein foaming agent is purchased from novel building materials Co., Ltd in Weihai, product number 12241611412; the animal protein foaming agent is purchased from Weihai Sheng novel building materials Co., Ltd, and has the product number of 122416101718; the composite foaming agent is purchased from Weihai Hancheng building materials science and technology Limited company and BASF company; mullite powder and mullite whiskers are purchased from ZiboLu Honowerson ceramics Co., Ltd; nepheline was purchased from glazed materials ltd, Shanghai City.
Example 1
(1) 158kg of F-type fly ash (the content of calcium oxide is less than 10 weight percent), 16kg of mullite whisker and 20.4kg of 10 percent sodium hydroxide aqueous solution by mass are stirred and mixed, 34kg of water glass solution with the modulus of 2 and the mass percent of 30 percent and 20kg of water are added, and the mixture is stirred for 10 minutes to prepare a gel material;
adding 8.5kg of water and 0.2kg of vegetable protein foaming agent into an air pressure foam generator to generate foam; then mixing the foam and the gel material, and stirring for 1 minute to obtain a mixed material;
(2) pouring the mixed material in the step (1) into a mold, curing for 24 hours under the condition of 40 ℃ and RH being 100%, then demolding, and curing for 27 days under the condition of 40 ℃ to obtain the inorganic polymer material. The dry density volume, compressive strength, flexural strength and thermal conductivity were measured.
(3) After the high-temperature treatment for 3 hours at the temperature of 800 ℃, the dry density volume, the compressive strength, the flexural strength and the heat conductivity coefficient of the material are measured.
Example 2
(1) Stirring and mixing 130kg of F-type fly ash (the content of calcium oxide is less than 10 weight percent), 30kg of mullite powder and 53kg of sodium hydroxide aqueous solution with the mass percent of 30 percent, adding 4.8kg of water, and stirring for 10 minutes to prepare a gel material;
adding 15.6kg of water and 0.4kg of compound protein foaming agent into an air pressure foam generator to generate foam; then mixing the foam and the gel material, and stirring for 1 minute to obtain a mixed material;
(2) pouring the mixed material in the step (1) into a mold, curing for 28 hours under the condition of 20 ℃ and RH being 100%, then demolding, and curing for 1 day under the condition of 20 ℃ to obtain the inorganic polymer material. The dry density volume, compressive strength, flexural strength and thermal conductivity were measured.
(3) After high-temperature treatment for 3h at 700 ℃, the dry density volume, compressive strength, flexural strength and thermal conductivity coefficient of the composite material are measured.
Example 3
(1) Stirring and mixing 100kg of F-type fly ash (the content of calcium oxide is less than 10 percent by weight), 80kg of metakaolin with the grain diameter of less than 74 microns, 8kg of nepheline and 26kg of potassium hydroxide aqueous solution with the mass percent of 14 percent, adding 24kg of potassium silicate aqueous solution with the modulus of 2 and the mass percent of 30 percent and 0.1kg of water, and stirring for 10 minutes to prepare a gel material;
adding 29kg of water and 0.75kg of animal protein foaming agent into a pneumatic foam generator to generate foam; then mixing the foam and the gel material, and stirring for 1 minute to obtain a mixed material;
(2) pouring the mixed material in the step (1) into a mold, curing for 20 hours at 85 ℃ and RH of 100%, then demolding, and curing for 15 days at 85 ℃ to obtain the inorganic polymer material. The dry density volume, compressive strength, flexural strength and thermal conductivity were measured.
(3) After the high-temperature treatment for 3 hours at the temperature of 1000 ℃, the dry density volume, the compressive strength, the flexural strength and the heat conductivity coefficient of the material are measured.
Example 4
(1) 158kg of class C fly ash (the content of calcium oxide is more than 10 weight percent), 16kg of mullite whisker and 20.4kg of 10 percent sodium hydroxide aqueous solution by mass are stirred and mixed, 34kg of water glass solution with the modulus of 2 and the mass percent of 30 percent and 20kg of water are added, and the mixture is stirred for 10 minutes to prepare a gel material;
adding 8.5kg of water and 0.2kg of vegetable protein foaming agent into an air pressure foam generator to generate foam; then mixing the foam and the gel material, and stirring for 1 minute to obtain a mixed material;
(2) pouring the mixed material in the step (1) into a mold, curing for 24 hours at 40 ℃ and RH of 100%, then demolding, and curing for 27 days at 40 ℃ to obtain the inorganic polymer material. The dry density volume, compressive strength, flexural strength and thermal conductivity were measured.
(3) After the high-temperature treatment for 3 hours at the temperature of 800 ℃, the dry density volume, the compressive strength, the flexural strength and the heat conductivity coefficient of the material are measured.
Example 5
(1) Stirring and mixing 100kg of class C fly ash (the content of calcium oxide is more than 10 weight percent), 80kg of metakaolin with the grain diameter of less than 149 micrometers, 8kg of nepheline and 26kg of potassium hydroxide aqueous solution with the mass percent of 14 percent, adding 24kg of potassium silicate aqueous solution with the modulus of 2 and the mass percent of 30 percent and 5.6kg of water, and stirring for 10 minutes to prepare a gel material;
adding 18.3kg of water and 0.47kg of animal protein foaming agent into a pneumatic foam generator to generate foam; then mixing the foam and the gel material, and stirring for 1 minute to obtain a mixed material;
(2) pouring the mixed material in the step (1) into a mold, curing for 20 hours at 85 ℃ and RH of 100%, then demolding, and curing for 15 days at 85 ℃ to obtain the inorganic polymer material. The dry density volume, compressive strength, flexural strength and thermal conductivity were measured.
(3) The dry density volume, the compressive strength, the flexural strength and the thermal conductivity coefficient of the material are measured after the material is treated for 2 hours at the high temperature of 1000 ℃.
Comparative example
(1) Mixing 100kg of 425-labeled cement, 50kg of F-type fly ash (the content of calcium oxide is more than 10 percent by weight), 16.5kg of silica fume and 58.5kg of water, and stirring for 10 minutes to prepare a mixed cement gel material;
adding 15kg of water and 0.38kg of animal protein foaming agent into an air pressure foam generator to generate foam;
(2) then mixing the foam with the mixed cement gel material, and stirring for 1 minute to obtain foamed concrete;
(3) and (2) pouring the foamed concrete in the step (1) into a mould, curing for 24 hours at 50 ℃ and RH of 100%, demoulding, and curing at normal temperature for 27 days to obtain the cement-based material. The dry density volume, compressive strength, flexural strength and thermal conductivity were measured.
(3) After the high-temperature treatment for 3 hours at the temperature of 1000 ℃, the dry density volume, the compressive strength, the flexural strength and the heat conductivity coefficient of the material are measured.
The above measurement results are shown in tables 1 and 2:
TABLE 1 physical Properties of inorganic Polymer materials before high temperature treatment
TABLE 2 physical Properties of the inorganic Polymer Material after high temperature treatment
The preferred embodiments of the present invention have been described above in detail, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention, including combinations of various technical features in any other suitable way, and these simple modifications and combinations should also be regarded as the disclosure of the invention, and all fall within the scope of the invention.
Claims (8)
1. A composition for the preparation of an inorganic polymeric material, characterized in that the composition comprises, based on the total weight of the composition, 73.6-91.9 wt% fly ash, 4-17 wt% crystallization enhancer, 4-9 wt% soluble alkali metal compound and 0.1-0.4 wt% foaming agent;
the soluble alkali metal compound is alkali metal hydroxide and/or alkali metal silicate;
the crystallization reinforcing agent is one or more of mullite whisker, mullite powder and nepheline.
2. The composition for preparing an inorganic polymeric material according to claim 1, wherein the foaming agent is a plant protein foaming agent, an animal protein foaming agent, a surfactant foaming agent or a composite foaming agent.
3. The composition for preparing an inorganic polymeric material of claim 2, wherein the fly ash has a calcium oxide content of less than or equal to 10 wt%.
4. A method of preparing an inorganic polymeric material, comprising the steps of:
(1) mixing fly ash, a crystallization enhancer, a soluble alkali metal compound and water to prepare a gel material;
mixing a foaming agent with water to generate foam, and mixing the foam with the gel material to obtain a mixed material;
(2) pouring the mixed material obtained in the step (1) into a mould, curing, demoulding and maintaining to obtain the inorganic polymer material;
wherein, based on the total consumption of the silicon-aluminum raw material, the crystallization reinforcing agent, the soluble alkali metal compound and the foaming agent, the consumption of the fly ash is 73.6-91.9 wt%, the consumption of the crystallization reinforcing agent is 4-17 wt%, the consumption of the soluble alkali metal compound is 4-9 wt%, the consumption of the foaming agent is 0.1-0.4 wt%, and the consumption of the water is 32-38% of the total weight of the fly ash, the crystallization reinforcing agent, the soluble alkali metal compound and the foaming agent;
the soluble alkali metal compound is alkali metal hydroxide and/or alkali metal silicate;
the crystallization reinforcing agent is one or more of mullite whisker, mullite powder and nepheline.
5. The method for preparing an inorganic polymer material according to claim 4, wherein the foaming agent is a plant protein foaming agent, an animal protein foaming agent, a surfactant foaming agent or a composite foaming agent.
6. The method of claim 5, wherein the fly ash has a calcium oxide content of less than or equal to 10 wt%.
7. The method for preparing an inorganic polymer material according to any one of claims 4 to 6, wherein in the step (2), the curing temperature is 20 to 85 ℃, and the curing time is 20 to 28 hours; the curing temperature is 20-85 ℃, and the normal-temperature curing time is 1-27 days.
8. The method for producing an inorganic polymer material according to claim 6,
the steps further include: treating the inorganic polymer material prepared in the step (2) at a high temperature of 700 ℃ and 1000 ℃;
the high-temperature treatment time is 2-4 h.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102701656A (en) * | 2012-06-21 | 2012-10-03 | 重庆大学 | Metakaolin-based polymer foam concrete and preparation method thereof |
| DE202013011896U1 (en) * | 2013-02-04 | 2014-09-16 | Refratechnik Holding Gmbh | Feuerbetonversatz containing a geopolymer binder system and the use of the offset |
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2020
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| CN102701656A (en) * | 2012-06-21 | 2012-10-03 | 重庆大学 | Metakaolin-based polymer foam concrete and preparation method thereof |
| DE202013011896U1 (en) * | 2013-02-04 | 2014-09-16 | Refratechnik Holding Gmbh | Feuerbetonversatz containing a geopolymer binder system and the use of the offset |
| CN108529913A (en) * | 2018-04-12 | 2018-09-14 | 范建国 | A kind of fine coal lacquer putty polymer material and the preparation method and application thereof |
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