CN103524101A - Preparation method of inorganic foam building thermal insulation material - Google Patents
Preparation method of inorganic foam building thermal insulation material Download PDFInfo
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- CN103524101A CN103524101A CN201310401510.5A CN201310401510A CN103524101A CN 103524101 A CN103524101 A CN 103524101A CN 201310401510 A CN201310401510 A CN 201310401510A CN 103524101 A CN103524101 A CN 103524101A
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Abstract
The invention provides a preparation method of an inorganic foam building thermal insulation material. The preparation method comprises the following steps: dispersing polypropylene fibers, pulverized fuel ash, sulphate aluminosilicate cement, calcium stearate, perlite, manganese dioxide and triethanolamine to water, and stirring, thus obtaining unfoamed slurry; and adding hydrogen peroxide with 30% of mass concentration to the unfoamed slurry, then molding the obtained pre-foamed slurry by casting, maintaining, demolding, and cutting, thus obtaining the inorganic foam building thermal insulation material. The preparation method has the advantages that the foaming process is controlled by controlling the mixing amount of the manganese dioxide catalyst so as to ensure the strength of the inorganic foam building thermal insulation material, simultaneously reduces the heat conductivity of the inorganic foam building thermal insulation material and enhances the heat preservation effect of the inorganic foam building thermal insulation material, the perlite is added so as to serve as an anti-collapse agent so as to reduce the rejection rate, and meanwhile, the triethanolamine is added so as to improve the property of the inorganic foam thermal insulation material. Compared with materials of the same kind, the inorganic foam building thermal insulation material has the characteristics of high strength, low heat conductivity, small volume weight, burning resistance, flame resistance and the like.
Description
Technical field
The present invention relates to a kind of preparation method of material of construction, particularly a kind of preparation method of inorganic foamed building thermal insulation material.
Background technology
At present, both at home and abroad conventional building thermal insulation material is divided into two kinds of organic and inanimate matters.Organic building thermal insulation material has polystyrene foamed plastics (EPS, XPS), hard foamed poly urethane (PU) etc., and its advantage is light weight, insulation, heat insulation, waterproof.But these organic foam materials are easily aging, can not with the same life-span of buildings, at buildings, in the usage period, need to repeatedly change thermal insulation layer.In addition EPS, XPS, PU etc. are macromolecule organic materials, have inflammable, non-refractory, combustionvelocity is fast, produces a large amount of defects such as toxic gas simultaneously, has very large disaster hidden-trouble.
Along with energy conservation standard is constantly perfect, fire safety performance requriements is stricter, and the inflammableness defect of organic insulation material has seriously hindered its development and application.This is just for mineral-type building thermal insulation material provides vast potential for future development.At present, mineral-type building thermal insulation material on market mainly comprises pearlstone class, air-entrained concrete building block, sulphur aluminosilicate inorganic heat-insulation board etc., the advantage of such material maximum is exactly that fire resistance property is strong, but because its unit weight, thermal conductivity are all higher, is unfavorable for spread.
Generally speaking, how solving the contradiction between the insulation, fire prevention, cost, environmental protection of lagging material, is our problem demanding prompt solution.Development of Novel lagging material not only has a extensive future, and imperative.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of inorganic foamed building thermal insulation material, the method cost is low, and the inorganic foamed building thermal insulation material intensity making is high, light weight, heat insulating, fire resistance property are strong, and good endurance, long service life, environmental protection.
In order to achieve the above object, the technical solution used in the present invention comprises the following steps:
1) polypropylene fibre, flyash, sulphur aluminosilicate cement, Manganse Dioxide, calcium stearate, perlite and trolamine be distributed in water and stirred, obtaining the slip that do not foam; The mass ratio of the polypropylene fibre wherein, adding, flyash, sulphur aluminosilicate cement, Manganse Dioxide, calcium stearate, perlite and trolamine is (0.2-0.6): (20-35): 40:(0.25～0.4): (0.3-0.6): (2～3): (0.20～0.25);
2) to adding mass concentration in the slip that do not foam, be 30% hydrogen peroxide, then by the pre-frothing slip casting moulding obtaining, then through maintenance, the demoulding, cutting, obtain inorganic foamed building thermal insulation material; The mass ratio of the Manganse Dioxide in the hydrogen peroxide wherein, adding and not foamed slurry is 2.1:(0.25～0.4).
The method that in described step 1), polypropylene fibre, flyash, sulphur aluminosilicate cement, Manganse Dioxide, calcium stearate, perlite, trolamine are distributed in water is: first, polypropylene fibre is distributed in water, and stirring makes to be uniformly dispersed; Then add successively flyash and sulphur aluminosilicate cement, stir; Add again Manganse Dioxide and mix, finally add successively calcium stearate, perlite and trolamine and stir.
The water adding in described step 1) and the mass ratio of polypropylene fibre are 40:(0.2-0.6).
Described step 2), before casting, pre-frothing slip is stirred.
Compared with prior art, beneficial effect of the present invention is:
1, the present invention selects hydrogen peroxide as whipping agent, after hydrogen peroxide adds in the slip not foaming, in the slip that do not foam, gas is transferred out in the catalysis of Manganse Dioxide at once, form less bubble, carrying out along with reaction, increasing Bubble formation, hydrogen peroxide produces gaseous tension around and in zonule, this pressure acts directly on formed slip, when the shearing stress causing when gaseous tension is greater than slip limit shearing stress, these bubble sizes increase, add the not foaming slip of hydrogen peroxide just to start to expand, until foamed, thereby make inorganic foamed building thermal insulation material.Due to the formed hole ball-type sealing of decomposing hydrogen dioxide solution and even aperture distribution, tiny pore can reduce stress concentration, improves the gas tightness of the inorganic foamed building thermal insulation material of finally making.
2, the present invention is in the inorganic foamed building thermal insulation material of preparation, also by changing the volume of Manganse Dioxide, control the decomposition rate of hydrogen peroxide, thereby control size and the porosity of bubble in inorganic foamed building thermal insulation material, the inorganic foamed building thermal insulation material obtaining has bubble and the porosity of size uniform, when keeping cellular insulant intensity, reduce thermal conductivity, there is certain apparent density and good heat insulation effect.
3, the initial microfracture, hole and the defect that due to sulphur aluminosilicate cement inside, contain different scale, when applying external force load, these positions produce larger stress can cause the expansion in crack, finally causes structure deteriorate.The present invention is in order to increase the intensity of the inorganic foamed building thermal insulation material finally making, also added polypropylene fibre as toughener, make polypropylene fibre and cement form interpenetrating(polymer)networks pilotaxitic texture, increase the toughness of foam sulphur aluminosilicate cement, reduce the existence of its defect, reduce the stress concentration factor of sulphur aluminosilicate cement internal fissure, effectively improve its splitting resistance, therefore inorganic foamed building thermal insulation material good endurance, long service life that, the present invention obtains.
4, the perlite in the present invention has mainly played the effect of support, skeleton in foaming sulphur aluminosilicate cement, can prevent inorganic foamed building thermal insulation material the subsiding in foaming process obtaining.
5, the trolamine that the present invention adds is a kind of water and permeate agent and reaction promotor that sulphur aluminosilicate cement reacts, can reduce by 20% sulphur aluminosilicate cement consumption, and product is being improved greatly compared with ultimate compression strength under low density.
In addition, foamed cement of the present invention, preparation method is simple, and production cost is low, and environmental protection.
Embodiment
Embodiment 1:
1) polypropylene fibre of 0.20kg is distributed in 40kg water, and stir about 30s makes to be uniformly dispersed; Then add successively the flyash of 25kg, the sulphur aluminosilicate cement of 40kg, stir 1min and make evenly; Add again the Manganse Dioxide of 0.25kg and mix; Finally add successively the trolamine of the calcium stearate of 0.44kg, the perlite of 2kg and 0.20kg and stir 30s to make to mix, obtain the slip that do not foam;
2) to adding 2.10kg mass concentration in foamed slurry not, be 30% hydrogen peroxide, then stir 15s, by the pre-frothing slip casting moulding obtaining, then through maintenance, the demoulding, cutting etc., obtain inorganic foamed building thermal insulation material.
Embodiment 2:
1) polypropylene fibre of 0.20kg is distributed in 40kg water, stir about 30s makes to be uniformly dispersed; Then add successively the flyash of 25kg, the sulphur aluminosilicate cement of 40kg, stir 1min and make evenly; Add again the Manganse Dioxide of 0.40kg and mix; Finally add successively the trolamine of the calcium stearate of 0.44kg, the perlite of 2.5kg and 0.22kg and stir 30s to make to mix, obtain the slip that do not foam;
2) to adding 2.10kg mass concentration in the slip that do not foam, be 30% hydrogen peroxide, then stir 15s, by the pre-frothing slip casting moulding obtaining, then through maintenance, the demoulding, cutting, obtain inorganic foamed building thermal insulation material.
Embodiment 3:
1) polypropylene fibre of 0.20kg is distributed in 40kg water, stir about 30s makes to be uniformly dispersed; Then add successively the flyash of 25kg, the sulphur aluminosilicate cement of 40kg, stir 1min and make evenly; Add again the Manganse Dioxide of 0.3kg and mix; Finally add successively the trolamine of the calcium stearate of 0.44kg, the perlite of 3kg and 0.20kg and stir 30s, making to mix, obtaining the slip that do not foam;
2) to adding 2.10kg mass concentration in the slip that do not foam, be 30% hydrogen peroxide, then stir 15s, by the pre-frothing slip casting moulding obtaining, then through maintenance, the demoulding, cutting, obtain inorganic foamed building thermal insulation material.
Embodiment 4:
1) polypropylene fibre of 0.20kg is distributed in 40kg water, stir about 30s makes to be uniformly dispersed; Then add successively the flyash of 25kg, the sulphur aluminosilicate cement of 40kg, stir 1min and make evenly; Add again the Manganse Dioxide of 0.35kg and mix; Finally add successively the trolamine of the calcium stearate of 0.44kg, the perlite of 2.60kg and 0.20kg and stir 30s, making to mix, obtaining the slip that do not foam;
2) to adding 2.10kg mass concentration in the slip that do not foam, be 30% hydrogen peroxide, then stir 15s, by the pre-frothing slip casting moulding obtaining, then through maintenance, the demoulding, cutting, obtain inorganic foamed building thermal insulation material.
Embodiment 5:
1) polypropylene fibre of 0.60kg is distributed in 40kg water, stir about 30s makes to be uniformly dispersed; Then add successively the flyash of 20kg, the sulphur aluminosilicate cement of 40kg, stir 1min and make evenly; Add again the Manganse Dioxide of 0.40kg and mix; Finally add successively the trolamine of the calcium stearate of 0.6kg, the perlite of 2.5kg and 0.25kg and stir 30s to make to mix, obtain the slip that do not foam;
2) to adding 2.10kg mass concentration in the slip that do not foam, be 30% hydrogen peroxide, then stir 15s, by the pre-frothing slip casting moulding obtaining, then through maintenance, the demoulding, cutting, obtain inorganic foamed building thermal insulation material.
Embodiment 6:
1) polypropylene fibre of 0.40kg is distributed in 40kg water, stir about 30s makes to be uniformly dispersed; Then add successively the flyash of 35kg, the sulphur aluminosilicate cement of 40kg, stir 1min and make evenly; Add again the Manganse Dioxide of 0.35kg and mix; Finally add successively the trolamine of the calcium stearate of 0.34kg, the perlite of 2.60kg and 0.20kg and stir 30s, making to mix, obtaining the slip that do not foam;
2) to adding 2.10kg mass concentration in the slip that do not foam, be 30% hydrogen peroxide, then stir 15s, by the pre-frothing slip casting moulding obtaining, then through maintenance, the demoulding, cutting, obtain inorganic foamed building thermal insulation material.
The mechanism of action in the preparation process of the inorganic foamed building thermal insulation material of the present invention is as follows:
Under normal temperature condition, select hydrogen peroxide as whipping agent, the present invention adopts Manganse Dioxide as catalyzer, under its effect, decomposes and produces bubble.By the volume of Manganse Dioxide, control Air Bubble Size and speed of reaction.Manganse Dioxide catalyzed reaction principle is:
MnO
2+H
2O
2+2H
+=Mn
2++O
2+2H
2O
H
2O
2+Mn
2+=MnO
2+2H
+
Hydrogen peroxide contacts in a flash with the not foamed slurry that contains Manganse Dioxide, sulphur aluminosilicate cement, just starts to emit gas, forms less bubble; Along with the carrying out of reaction, bubble produces in a large number.
The apparent density of inorganic foamed building thermal insulation material of the present invention, intensity and heat-insulating property are to be determined by the structure of pore and porosity to a great extent.The present invention is due to the formed hole ball-type sealing of decomposing hydrogen dioxide solution and even aperture distribution, and tiny pore can reduce stress concentration.The bubble producing forms closed pore bubble at sulphur aluminosilicate cement gel body or particle surface, can effectively hinder gas flow, avoids the transmission of air-flow heat, thereby improves the heat-insulating property of inorganic foamed building thermal insulation material.Meanwhile, membrane structure can also effectively stop moisture content to enter foam interior, greatly reduces the water-intake rate of material, thereby guarantees the thermal and insulating performance of material under wet environment.
The present invention is (0.25～0.4) by controlling the mass ratio of Manganse Dioxide and sulphur aluminosilicate cement: 40, and make whole foaming process be no more than 15min, the bubble that surpasses 15min generation can make the intensity of product obviously reduce; Thereby make inorganic foamed building thermal insulation material there is bubble and the porosity of size uniform, when keeping cellular insulant intensity, reduce thermal conductivity, strengthen its heat insulation effect;
In addition, initial microfracture, hole and defect that different scale is contained in sulphur aluminosilicate cement inside, when applying external force load, these positions produce larger stress can cause the expansion in crack, finally causes structure deteriorate.In order to increase the intensity of sulphur aluminosilicate cement, in slip, add polypropylene fibre (PP fiber), make itself and inorganics form interpenetrating(polymer)networks pilotaxitic texture, increase the toughness of foam sulphur aluminosilicate cement, reduce the existence of its defect, the stress concentration factor that reduces sulphur aluminosilicate cement internal fissure, effectively improves its splitting resistance.
The trolamine that the present invention adds is permeate agent and the reaction promotor that a kind of water reacts with sulphur aluminosilicate cement, cement and water can fully be reacted, by adding trolamine can reduce by 20% sulphur aluminosilicate cement consumption, and product is being improved greatly compared with ultimate compression strength under low density.
The present invention is by controlling comparing in (0.2～0.25) with sulphur aluminosilicate cement quality of trolamine: 40, and trolamine just can promote water fully contact and react with sulphur aluminosilicate cement like this, effectively improves the intensity of inorganic foamed building thermal insulation material.
The present invention also the mass ratio by controlling perlite and sulphur aluminosilicate cement in (2～3): 40 prevent subsiding in foaming process.Perlite in foaming sulphur aluminosilicate cement mainly plays a part to support, skeleton, can prevent subsiding of lagging material.
Perlite of the present invention is as anti-sloughing agent, trolamine is made permeate agent and reaction promotor, polypropylene fibre is as toughener, therefore, compare with traditional lagging material, the inorganic foamed building thermal insulation material that the present invention makes is when keeping common building material characteristics, and not only high, the light weight of intensity, heat insulating, fire resistance property are strong, and good endurance, long service life, environmental protection, be convenient to promote the use of.
Claims (4)
1. a preparation method for inorganic foamed building thermal insulation material, is characterized in that, comprises the following steps:
1) polypropylene fibre, flyash, sulphur aluminosilicate cement, Manganse Dioxide, calcium stearate, perlite and trolamine be distributed in water and stirred, obtaining the slip that do not foam; The mass ratio of the polypropylene fibre wherein, adding, flyash, sulphur aluminosilicate cement, Manganse Dioxide, calcium stearate, perlite and trolamine is (0.2-0.6): (20-35): 40:(0.25～0.4): (0.3-0.6): (2～3): (0.20～0.25);
2) to adding mass concentration in the slip that do not foam, be 30% hydrogen peroxide, then by the pre-frothing slip casting moulding obtaining, then through maintenance, the demoulding, cutting, obtain inorganic foamed building thermal insulation material; The mass ratio of the Manganse Dioxide in the hydrogen peroxide wherein, adding and not foamed slurry is 2.1:(0.25～0.4).
2. the preparation method of a kind of inorganic foamed building thermal insulation material according to claim 1, it is characterized in that, the method that in described step 1), polypropylene fibre, flyash, sulphur aluminosilicate cement, Manganse Dioxide, calcium stearate, perlite, trolamine are distributed in water is: first, polypropylene fibre is distributed in water, and stirring makes to be uniformly dispersed; Then add successively flyash and sulphur aluminosilicate cement, stir; Add again Manganse Dioxide and mix, finally add successively calcium stearate, perlite and trolamine and stir.
3. the preparation method of a kind of inorganic foamed building thermal insulation material according to claim 1 and 2, is characterized in that: the water adding in described step 1) and the mass ratio of polypropylene fibre are 40:(0.2-0.6).
4. the preparation method of a kind of inorganic foamed building thermal insulation material according to claim 1 and 2, is characterized in that: described step 2) before casting, pre-frothing slip is stirred.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478364A (en) * | 2014-12-25 | 2015-04-01 | 王明忠 | Foam concrete self-insulation building block and production method thereof |
| CN104609782A (en) * | 2014-12-30 | 2015-05-13 | 青建集团股份公司 | Preparation method of low-density concrete thermal insulation composite material |
| CN108129111A (en) * | 2017-12-29 | 2018-06-08 | 安徽乐享家装饰设计有限公司 | A kind of foamed heat insulating type construction material |
| CN108164228A (en) * | 2017-12-29 | 2018-06-15 | 安徽乐享家装饰设计有限公司 | A kind of preparation method of foamed heat insulating type construction material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103232259A (en) * | 2013-04-02 | 2013-08-07 | 陕西科技大学 | Preparation method for inorganic noninflammable lightweight foamed cement |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103232259A (en) * | 2013-04-02 | 2013-08-07 | 陕西科技大学 | Preparation method for inorganic noninflammable lightweight foamed cement |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478364A (en) * | 2014-12-25 | 2015-04-01 | 王明忠 | Foam concrete self-insulation building block and production method thereof |
| CN104609782A (en) * | 2014-12-30 | 2015-05-13 | 青建集团股份公司 | Preparation method of low-density concrete thermal insulation composite material |
| CN108129111A (en) * | 2017-12-29 | 2018-06-08 | 安徽乐享家装饰设计有限公司 | A kind of foamed heat insulating type construction material |
| CN108164228A (en) * | 2017-12-29 | 2018-06-15 | 安徽乐享家装饰设计有限公司 | A kind of preparation method of foamed heat insulating type construction material |
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