CN110526632B - Foam slag based polymer material and preparation method thereof - Google Patents
Foam slag based polymer material and preparation method thereof Download PDFInfo
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- CN110526632B CN110526632B CN201910878901.3A CN201910878901A CN110526632B CN 110526632 B CN110526632 B CN 110526632B CN 201910878901 A CN201910878901 A CN 201910878901A CN 110526632 B CN110526632 B CN 110526632B
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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
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
-
- 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
- C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
-
- 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
- C04B2201/30—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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a foam slag-based polymer material and a preparation method thereof: 15-30 parts of composite alkali activator, 30-40 parts of slag, 7-9 parts of calcined metakaolin, 4-6 parts of rice hull ash, 6-8 parts of Portland cement, 15-20 parts of water, 0.1-0.3 part of water reducing agent, 0.5-0.6 part of foaming agent, 0.2-0.4 part of foam stabilizer, 1-3 parts of silane coupling agent and 0.1-0.4 part of fluxing agent. Compared with the traditional heat-preservation and heat-insulation cement-based material, the foamed slag geopolymer material of the invention has the following advantages: the foam slag geopolymer material has the characteristics of high strength, good heat insulation, small density, good durability, low price and the like, and the heat insulation coefficient of the foam slag geopolymer material is less than 0.05 W.m‑1·K‑1Is far less than 0.07 W.m required by national standard GB/T26565-2011 cement-based heat insulation dry blend‑1·K‑1。
Description
Technical Field
The invention relates to the technical field of geopolymer-based materials, in particular to a foam slag-based polymer material and a preparation method thereof
Background
With the continuous development of energy sources, energy-saving engineering quickly becomes the focus of attention of people, and according to incomplete statistics, about 30% of total energy consumption in all parts of the world is building energy consumption, or even more. The building energy conservation refers to that on the basis of meeting basic requirements, effective measures are adopted in the building design, construction and use processes to reasonably utilize resources and reduce energy consumption. For building energy conservation, heat preservation and insulation products become hot spots of research of people, and at present, people mainly prepare organic heat preservation and insulation materials and inorganic heat preservation and insulation materials. The organic heat-insulating material has the characteristics of large heat conductivity coefficient, influence on heat-insulating effect and service life after water absorption, low energy-saving efficiency and the like, and greatly limits the application. The geopolymer is a three-dimensional network gel material formed by connecting silicon-oxygen tetrahedron and aluminum-oxygen tetrahedron through bridge oxygen, which is formed by carrying out depolymerization, condensation polymerization and gel networking processes on aluminum-silicate industrial waste or active aluminosilicate mineral in a strong alkaline solution, has the advantages of high temperature resistance, corrosion resistance, freeze-thaw resistance and the like, is widely applied to the fields of airport runways, communication facilities, road and bridge construction and repair and the like, and therefore development of an organic-inorganic heat-preservation geopolymer material is urgent.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a foam slag-based polymer material and a preparation method thereof, and the material has the advantages of good thermal insulation performance, high porosity, high strength and the like.
In order to achieve the above object, one aspect of the present invention provides a foamed slag based polymer material, characterized in that: the paint comprises the following components in parts by mass: 15-30 parts of composite alkali activator, 30-40 parts of slag, 7-9 parts of calcined metakaolin, 4-6 parts of rice hull ash, 6-8 parts of Portland cement, 15-20 parts of water, 0.1-0.3 part of water reducing agent, 0.5-0.6 part of foaming agent, 0.2-0.4 part of foam stabilizer, 1-3 parts of silane coupling agent and 0.1-0.4 part of fluxing agent.
Preferably, the slag is ball-milled for 24 to 48 hours by using a ball mill using a sieving method so that the average particle diameter is 0.096 to 0.105 mm;
the calcined metakaolin was prepared as follows: calcining kaolinite at the temperature of 750-850 ℃ for 15-20h, then grinding and screening to ensure that the particle size is 150-200 nm;
the preparation process of the rice husk ash is as follows: calcining the rice hull at the temperature of 700-800 ℃ for 6-8h, wherein the particle size of the rice hull ash is 100-200 nm;
the compound alkali activator is a salt-alkali compound alkali activator using sodium sulfate and sodium silicate, and the weight mass ratio of the sodium sulfate to the sodium silicate is 0.11-0.15: 1;
the foaming agent is sodium dodecyl sulfate, and the solid content is 20-24%;
the foam stabilizer is a mixture of sodium dodecyl benzene sulfonate and triethanolamine, and the mass ratio of the sodium dodecyl benzene sulfonate to the triethanolamine is 0.55-0.36: 1;
the fluxing agent is agar hydrosol, and the solid content is 80-90%;
the ordinary portland cement is 42.5R ordinary portland cement;
the water reducing agent is a polycarboxylic acid water reducing agent, and the weight of the water reducing agent is 0.6-1.0 of the total weight of the polycarboxylic acid water reducing agent;
the silane coupling agent is NH2CH2CH2CH2Si(OC2H5)3Or/and CH2-CH(OCH2-O(CH2)3Si(OCH3)3。
The invention also provides a preparation method of the foam slag-based geopolymer material, which is characterized by comprising the following steps of: the method comprises the following steps:
(1) weighing 15-30 parts of composite alkali activator, 30-40 parts of slag, 7-9 parts of calcined metakaolin, 4-6 parts of rice hull ash, 6-8 parts of portland cement, 15-20 parts of water, 0.1-0.3 part of water reducing agent, 0.5-0.6 part of foaming agent, 0.2-0.4 part of foam stabilizer, 1-3 parts of silane coupling agent and 0.1-0.4 part of fluxing agent in parts by mass;
(2) putting the slag, the calcined metakaolin, the rice hull ash, the foam stabilizer, the water reducer and the portland cement into an earthen pot for ball milling for 25-30h to obtain a premix; uniformly mixing the premix, a silane coupling agent, a composite alkali activator and water, and stirring for 2-4 min;
(3) and adding a foaming agent into the slurry, mechanically stirring to completely dissolve the foaming agent, quickly stirring to obtain a large amount of foam, continuously stirring for 3-5min, and stabilizing to obtain the foam slurry, namely the foam slag-based polymer material.
The foamed slag-based polymer material and the traditional curing material have the following advantages:
(1) the foam slag-based polymer material adopts industrial slag, coal ash and other wastes and rice hull ash and other agricultural wastes, can solve the problem of centralized stacking of the industrial wastes and the agricultural wastes, can avoid a 'two-grinding and one-burning' process in the cement production process, and is energy-saving and emission-reducing.
(2) The foam slag-based polymer can reduce the cost, recycle solid wastes and obtain good economic benefit.
(3) The foam slag-based polymer material has the advantages of good thermal insulation performance, high porosity, high strength, good durability and the like.
(4) The preparation method of the foam slag-based polymer material is simple and easy to popularize.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
In the following embodiments, the foamed slag based polymer material comprises the following components in parts by mass: the composite alkali-activator comprises, by mass, 15-30 parts of a composite alkali-activator, 30-40 parts of slag, 7-9 parts of calcined metakaolin, 4-6 parts of rice hull ash, 6-8 parts of portland cement, 15-20 parts of water, 0.1-0.3 part of a water reducing agent, 0.5-0.6 part of a foaming agent, 0.2-0.4 part of a foam stabilizer, 1-3 parts of a silane coupling agent and 0.1-0.4 part of a fluxing agent.
The compound alkali activator used in the following embodiments consists of sodium sulfate and sodium silicate salt-alkali compound alkali activator, and the mass ratio is 0.11-0.15: 1; the grain size of the rice husk ash is 100-200 nm; the average grain size of the slag is between 0.096 and 0.105 mm; the average particle size of the calcined metakaolin is 150-200 nm; the solid content of the sodium dodecyl sulfate is 20 to 24 percent; the mass ratio of the sodium dodecyl benzene sulfonate to the triethanolamine is 0.55-0.36: 1; the Portland cement is No. 42.5R ordinary Portland cement; the solid content of the agar hydrosol is 80-90%; 0.6-1.0 parts by weight of polycarboxylic acid water reducing agent, and NH as silane coupling agent2CH2CH2CH2Si(OC2H5)3And CH2-CH(OCH2-O(CH2)3Si(OCH3)3One or a mixture thereof.
Example 1
The embodiment provides a foamed slag-based polymer material, and the specific preparation method comprises the following steps: putting 35 parts of slag, 8 parts of calcined metakaolin, 5 parts of rice hull ash, 0.3 part of foam stabilizer, 0.2 part of water reducer and 7 parts of portland cement into an earthen pot for ball milling for 25-30 hours to obtain a premix for later use, pouring the premix into a cement mortar stirrer, and uniformly mixing the premix with 2 parts of silane coupling agent, 25 parts of composite alkali activator and 18 parts of water for 3 min; and adding 0.5 part of foaming agent into the slurry, mechanically stirring to completely dissolve the foaming agent, quickly stirring to obtain a large amount of foam, continuously stirring for 4min, and stabilizing to obtain the foam slurry.
Example 2
The embodiment provides a foamed slag-based polymer material, and the specific preparation method comprises the following steps: putting 35 parts of slag, 8 parts of calcined metakaolin, 5 parts of rice hull ash, 0.3 part of foam stabilizer, 0.2 part of water reducer and 7 parts of portland cement into an earthen pot for ball milling for 25-30 hours to obtain a premix for later use, pouring the premix into a cement mortar stirrer, and uniformly mixing the premix with 2 parts of silane coupling agent, 25 parts of composite alkali activator and 18 parts of water for 3 min; and adding 0.5 part of foaming agent into the slurry, mechanically stirring to completely dissolve the foaming agent, quickly stirring to obtain a large amount of foam, continuously stirring for 3min, and stabilizing to obtain the foam slurry.
Example 3
The embodiment provides a foamed slag-based polymer material, and the specific preparation method comprises the following steps: putting 35 parts of slag, 8 parts of calcined metakaolin, 5 parts of rice hull ash, 0.3 part of foam stabilizer, 0.2 part of water reducer and 7 parts of portland cement into an earthen pot for ball milling for 25-30 hours to obtain a premix for later use, pouring the premix into a cement mortar stirrer, and uniformly mixing the premix with 2 parts of silane coupling agent, 25 parts of composite alkali activator and 18 parts of water for 3 min; and adding 0.5 part of foaming agent into the slurry, mechanically stirring to completely dissolve the foaming agent, quickly stirring to obtain a large amount of foam, continuously stirring for 5min, and stabilizing to obtain the foam slurry.
Example 4
The embodiment provides a foamed slag-based polymer material, and the specific preparation method comprises the following steps: putting 35 parts of slag, 8 parts of calcined metakaolin, 5 parts of rice hull ash, 0.3 part of foam stabilizer, 0.2 part of water reducer and 7 parts of portland cement into an earthen pot for ball milling for 25-30 hours to obtain a premix for later use, pouring the premix into a cement mortar stirrer, and uniformly mixing the premix with 2 parts of silane coupling agent, 25 parts of composite alkali activator and 18 parts of water for 3 min; and adding 0.5 part of foaming agent into the slurry, mechanically stirring to completely dissolve the foaming agent, quickly stirring to obtain a large amount of foam, continuously stirring for 5min, and stabilizing to obtain the foam slurry.
Example 5
The embodiment provides a foamed slag-based polymer material, and the specific preparation method comprises the following steps: putting 35 parts of slag, 8 parts of calcined metakaolin, 5 parts of rice hull ash, 0.3 part of foam stabilizer, 0.2 part of water reducer and 7 parts of portland cement into an earthen pot for ball milling for 25-30 hours to obtain a premix for later use, pouring the premix into a cement mortar stirrer, and uniformly mixing the premix with 2 parts of silane coupling agent, 25 parts of composite alkali activator and 18 parts of water for 3 min; and adding 0.5 part of foaming agent into the slurry, mechanically stirring to completely dissolve the foaming agent, quickly stirring to obtain a large amount of foam, continuously stirring for 4min, and stabilizing to obtain the foam slurry.
Example 6
The embodiment provides a foamed slag-based polymer material, and the specific preparation method comprises the following steps: putting 35 parts of slag, 8 parts of calcined metakaolin, 5 parts of rice hull ash, 0.3 part of foam stabilizer, 0.2 part of water reducer and 7 parts of portland cement into an earthen pot for ball milling for 25-30 hours to obtain a premix for later use, pouring the premix into a cement mortar stirrer, and uniformly mixing the premix with 2 parts of silane coupling agent, 25 parts of composite alkali activator and 18 parts of water for 3 min; and adding 0.5 part of foaming agent into the slurry, mechanically stirring to completely dissolve the foaming agent, quickly stirring to obtain a large amount of foam, continuously stirring for 3min, and stabilizing to obtain the foam slurry.
Test example
The foamed slag-based polymer materials prepared in examples 1 to 6 were subjected to performance tests using national standards of "GB/T26565-2011, GB/T1966-1996, GB/T50081-2002 and GB/T10247-2008" for cement concrete/mortar, and the test results are shown in Table 1, in which the thermal conductivity was measured according to GB/T26565-2011, the porosity and the bulk density were measured according to GB/T1966-1996, the compressive strength was measured according to GB/T50081-2002, and the viscosity was measured according to GB/T10247-2008.
Table 1 shows the results of the measurements of the properties of the foamed slag-based polymers
While embodiments of the present invention have been described above, the above description is intended to be exemplary, not exhaustive, and not limited to any embodiments carelessly. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (2)
1. A foamed slag based polymeric material, characterized by: the paint comprises the following components in parts by mass: 15-30 parts of composite alkali activator, 30-40 parts of slag, 7-9 parts of calcined metakaolin, 4-6 parts of rice hull ash, 6-8 parts of ordinary portland cement, 15-20 parts of water, 0.1-0.3 part of water reducing agent, 0.5-0.6 part of foaming agent, 0.2-0.4 part of foam stabilizer, 1-3 parts of silane coupling agent and 0.1-0.4 part of agar hydrosol with solid content of 80-90%;
the slag is ball-milled for 24-48 hours by using a ball mill by using a screening method so that the average grain diameter is 0.096-0.105 mm;
the calcined metakaolin was prepared as follows: calcining kaolinite at the temperature of 750-850 ℃ for 15-20h, then grinding and screening to ensure that the particle size is 150-200 nm;
the preparation process of the rice husk ash is as follows: calcining the rice hull at the temperature of 700-800 ℃ for 6-8h, wherein the particle size of the rice hull ash is 100-200 nm;
the compound alkali activator is a salt-alkali compound alkali activator of sodium sulfate and sodium silicate, and the mass ratio of the sodium sulfate to the sodium silicate is 0.11-0.15: 1;
the foaming agent is sodium dodecyl sulfate;
the foam stabilizer is a mixture of sodium dodecyl benzene sulfonate and triethanolamine, and the mass ratio of the sodium dodecyl benzene sulfonate to the triethanolamine is 0.55-0.36: 1;
the ordinary portland cement is 42.5R ordinary portland cement;
the water reducing agent is a polycarboxylic acid water reducing agent;
the silane coupling agent is NH2CH2CH2CH2Si(OC2H5)3Or/and CH2-CH（OCH2-O(CH2)3Si(OCH3)3。
2. A method for preparing the foamed slag based geopolymer material according to claim 1, wherein: the method comprises the following steps:
(1) weighing 15-30 parts of composite alkali activator, 30-40 parts of slag, 7-9 parts of calcined metakaolin, 4-6 parts of rice hull ash, 6-8 parts of ordinary portland cement, 15-20 parts of water, 0.1-0.3 part of water reducing agent, 0.5-0.6 part of foaming agent, 0.2-0.4 part of foam stabilizer, 1-3 parts of silane coupling agent and 0.1-0.4 part of agar hydrosol with the solid content of 80-90%;
(2) putting the slag, the calcined metakaolin, the rice hull ash, the foam stabilizer, the water reducer and the ordinary portland cement into an earthen pot for ball milling for 25-30h to obtain a premix; uniformly mixing the premix, a silane coupling agent, a composite alkali activator and water, and stirring for 2-4 min;
(3) and (3) adding a foaming agent into the slurry prepared in the step (2), mechanically stirring to completely dissolve the foaming agent, then quickly stirring to obtain a large amount of foam, continuously stirring for 3-5min, and obtaining the foam slurry, namely the foam slag-based polymer material after stabilization.
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| CN112723801B (en) * | 2021-01-13 | 2022-06-03 | 武汉大学 | Cement concrete pavement rapid repairing material and preparation method thereof |
| IT202200008441A1 (en) * | 2022-04-28 | 2023-10-28 | Giovanbattista Salzano | Process for the production of alkali-activated materials (AAM), products obtainable with said process and heat-insulating materials including said AAM products |
| CN115403298B (en) * | 2022-09-28 | 2023-03-10 | 北京工业大学 | Oleophobic base polymer composite foaming agent and preparation method thereof |
| CN115925334A (en) * | 2022-11-22 | 2023-04-07 | 西南石油大学 | High-titanium slag-based foamed geopolymer electromagnetic absorption material and preparation method thereof |
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| CN102320782B (en) * | 2011-05-31 | 2013-05-15 | 华南理工大学 | Rice hull ash and metakaolin based polymer composite fireproof paint and preparation method thereof |
| CN102701656B (en) * | 2012-06-21 | 2015-06-17 | 重庆大学 | Metakaolin-based polymer foam concrete and preparation method thereof |
| CN103771822B (en) * | 2014-01-27 | 2016-04-06 | 同济大学 | A kind of water-proof heat-insulation material and preparation method thereof |
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