CN103992056A - Alkali-free early strength agent for foam cement insulation board and preparation method thereof - Google Patents
Alkali-free early strength agent for foam cement insulation board and preparation method thereof Download PDFInfo
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- CN103992056A CN103992056A CN201410210707.5A CN201410210707A CN103992056A CN 103992056 A CN103992056 A CN 103992056A CN 201410210707 A CN201410210707 A CN 201410210707A CN 103992056 A CN103992056 A CN 103992056A
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- trolamine
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Abstract
The invention provides an alkali-free early strength agent for a foam cement insulation board and a preparation method thereof. The early strength agent is compounded from a component A, a component B and water, wherein the component A comprises 40-45% of any one of aluminum sulfate, aluminum nitrate and ferric sulfate, 15-20% of aluminum hydroxide colloid, 7-10% of stabilizer and 30-35% of water; the component A functions in rapidly hardening the foam cement insulation board; the component B comprises 60-70% of any one of sodium chloride, sodium sulfate or aluminum chloride, 25-35% of sodium nitrite and 3-5% of coagulant; the component B functions in establishing the early strength of the foam cement insulation board; the two components are compounded with water to develop a synergistic effect so that the initial setting time and final setting time of the foam cement insulation board are reduced, the early strength of the foam cement insulation board is improved and the maintenance time of the foam cement insulation board is shortened.
Description
Technical field
The present invention discloses a kind of foaming cement thermal insulation plate alkali-free hardening accelerator and preparation method thereof, for external wall heat insulation system, belongs to building material field.
Background technology
Energy-saving and emission-reduction are one of Chinese Government's focuses of work in recent years.Insulating layer of external wall transformation is exactly to reduce discharging for realizing building the measure of implementing under this background.China's popular architectural exterior insulation material in market is to be mainly made up of materials such as rock wool, molding styrofoam, extruded polystyrene board and urethane at present, and what shortage quality reached a standard does not fire lagging material.In recent years, along with continuing to bring out and improving constantly that people require building energy-saving of novel material, External Thermal Insulation Technology for External is as a kind of new power-saving technology, no matter from Energy saving mechanism and energy-saving effect, all have sizable advantage, its promotion and application have become a kind of inexorable trend.With respect to exterior wall internal insulation, external wall outer insulation has following major advantage:
1) protection agent structure, the life-span of prolongation buildings.
2) structural distortion produce stressor layers basically eliminate the impact of " heat bridge ".
3) increased the usable floor area in house.
4) body of wall moisture conditions is improved.
5) be conducive to room temperature and keep stable.
6) be conducive to improve indoor thermal environment quality.
Because external wall insulation need to be at outdoor construction, therefore require also to want warming plate waterproof, cracking resistance, and the warming plate of inorganic materials requires early by force, in a few hours, hardness reaches the degree that can cut, thereby reduces the curing time of warming plate, reduction of erection time, when cutting warming plate, also can reduce the harm of dust to staff, cost performance is high.
Foam cement is to use the comparatively general inorganic warming plate of misfiring at present, and slow but existence was hardened, curing time is partially long, occupied ground is large, does not utilize production in enormous quantities, adds after alkali-free hardening accelerator, can reduce initial set and final setting time, final strength does not obviously decline.
It is generally acknowledged and accelerated C adding of accelerating chemicals
3a and C
3the aquation of S, has viewpoint to think: main by promoting C3A aquation to form ettringite and rapid hardening:
NaAlO
2?+?2H
2O?→?Al(OH）
3?+?2NaOH
Na
2CO
3?+?CaO?+?H
2O?→?CaCO
3?+?2NaOH
2?NaAlO
2?+?3CaO?+?7H
2O?→?3CaO·Al
2O
3·6H
2O?+?2NaOH
2NaOH?+?CaSO
4?→?Na
2SO
4?+?Ca(OH)
2
From reaction formula, after adding, accelerating chemicals generates NaOH, and NaOH reacts with the gypsum in grout, generates Na
2sO
4.Thereby C
3a dissolves and enters hydration reaction, C rapidly
3the aquation of A generates ettringite rapidly again and has accelerated the setting and harden of grout.The formation of ettringite simultaneously makes again Ca (OH)
2concentration reduces, and has promoted C
3the aquation of S, has further accelerated condensing of cement.
Tradition accelerating chemicals may make 28 days strength degradation 30-40%, it is generally acknowledged it is mainly due to the strong basicity of traditional accelerating chemicals.Accelerating chemicals makes cement slurry cross quick setting simultaneously, has hindered the normal structural development of concrete, makes structure have defect, causes loss of strength.And the strong basicity of alkaline accelerating chemicals, there is extremely strong corrodibility, to there being larger injury in other finishing material, production and construction process.
Summary of the invention
The object of the invention is to overcome the foaming cement thermal insulation plate curing time existing in prior art long, the problem such as when cutting hardness is not high, provides a kind of foaming cement thermal insulation plate alkali-free hardening accelerator and preparation method thereof.
The present invention is achieved in that a kind of foaming cement thermal insulation plate alkali-free hardening accelerator, it is characterized in that: comprise A component, B component, water,
Described A compositions in weight percentage comprises: in 40-45% Tai-Ace S 150 or 40-45% aluminum nitrate or 40-45% ferric sulfate, choose any one kind of them, 15-20% alumine hydroxide colloid, the stablizer of 7-10%, 30-35% water; Described stablizer is chosen any one kind of them or is several in lactic acid, trolamine, citric acid, tartrate, ethylenediamine tetraacetic acid (EDTA) or sodium gluconate;
Described B compositions in weight percentage comprises: in the aluminum chloride of the sodium-chlor of 60-70% or the sodium sulfate of 60-70% or 60-70% any one, the Sodium Nitrite of 25-35%, the setting accelerator of 3-5%; Wherein said setting accelerator is chosen any one kind of them or is several in trolamine, calcium formiate, acetic acid and acetate, tri-isopropanolamine;
Described A component, B component, water, be by ratio of weight and the number of copies: B component: water=1:(10-15); And (B component+water): A component=(1-2): 1.
In A component, in the time selecting 40-45% Tai-Ace S 150, described stablizer is preferably the combination of trolamine and lactic acid.
The weight percent of described trolamine is 2-3%, and the weight percent of described lactic acid is 5-7%.
The preparation method of alkali-free hardening accelerator for a kind of foaming cement thermal insulation plate as above, it is characterized in that: comprise the steps: the preparation of (1) A component: in 40-45% Tai-Ace S 150 or 40-45% aluminum nitrate or 40-45% ferric sulfate, choose any one kind of them, mix with the water of 30-35%, be warming up to 70 DEG C, being stirred to Tai-Ace S 150 or aluminum nitrate or ferric sulfate dissolves completely, then add the alumine hydroxide colloid of described 15-20%, be warming up to 95-100 DEG C, add again the stablizer of described 7-10%, be incubated 30 minutes, then cooling, obtains A component;
(2) preparation of B component: by the aluminum chloride of the sodium sulfate of the sodium-chlor of 60-70% or 60-70% or 60-70% any one, the Sodium Nitrite of 25-35%, the setting accelerator of 3-5% mix and stir, and obtains B component;
(3) B component is mixed with water, ratio of weight and number is B component: water=1:(10-15); B component is dissolved in water, form B solution;
(4) by the B solution of gained in step 3 and A component B solution by ratio of weight and the number of copies: A component=(1-2): 1 mixes.
The invention has the beneficial effects as follows: the present invention, by A component and the composite rear performance synergistic effect of B component, shortens foam cement plate initial set and final setting time, improves its early strength, shortens curing time.
Embodiment
A kind of foaming cement thermal insulation plate of the present invention alkali-free hardening accelerator, comprises A component, B component, water; Described A component, B component, water, be by ratio of weight and the number of copies: B component: water=1:(10-15); And (B component+water): A component=(1-2): 1.
Wherein, described A compositions in weight percentage comprises: in 40-45% Tai-Ace S 150 or 40-45% aluminum nitrate or 40-45% ferric sulfate, choose any one kind of them, 15-20% alumine hydroxide colloid, the stablizer of 7-10%, 30-35% water; Described stablizer is chosen any one kind of them or is several in lactic acid, trolamine, citric acid, tartrate, ethylenediamine tetraacetic acid (EDTA) or sodium gluconate.In the time selecting 40-45% Tai-Ace S 150, the combination that the trolamine of the preferred 2-3% of described stablizer and the lactic acid of 5-7% are two kinds.
Described B compositions in weight percentage comprises: in the aluminum chloride of the sodium-chlor of 60-70% or the sodium sulfate of 60-70% or 60-70% any one, the Sodium Nitrite of 25-35%, the setting accelerator of 3-5%; Wherein said setting accelerator is chosen any one kind of them or is several in trolamine, calcium formiate, acetic acid and acetate, tri-isopropanolamine.
Foaming cement thermal insulation plate of the present invention is as follows by the preparation method of alkali-free hardening accelerator, comprise the following steps: the preparation of (1) A component: in 40-45% Tai-Ace S 150 or 40-45% aluminum nitrate or 40-45% ferric sulfate, choose any one kind of them, mix with the water of 30-35%, be warming up to 70 DEG C, be stirred to Tai-Ace S 150 or aluminum nitrate or ferric sulfate and dissolve completely, then add the alumine hydroxide colloid of described 15-20%, be warming up to 95-100 DEG C, then add the stablizer of described 7-10%, be incubated 30 minutes, then cooling, obtains A component;
(2) preparation of B component: by the aluminum chloride of the sodium sulfate of the sodium-chlor of 60-70% or 60-70% or 60-70% any one, the Sodium Nitrite of 25-35%, the setting accelerator of 3-5% mix and stir, and obtains B component;
(3) B component is mixed with water, ratio of weight and number is B component: water=1:(10-15); B component is dissolved in water, form B solution;
(4) by the B solution of gained in step 3 and A component B solution by ratio of weight and the number of copies: A component=(1-2): 1 mixes.
Below in conjunction with specific embodiment, the present invention is further elaborated.
Embodiment mono-:
In this example, described A component is composed of the following components: Tai-Ace S 150 42g, alumine hydroxide colloid 16g, trolamine 3g, lactic acid 7g, water 32g.Described B component is composed of the following components: sodium-chlor 65g, Sodium Nitrite 35g, trolamine 5g.1 part of B component is dissolved in 10 parts of water, obtains B solution, then by A component and B solution with A component: the ratio of B solution=1:1 is mixed.B solution is: B component+water.
This routine preparation method is as follows:
(1) 42g Tai-Ace S 150 and 32g water are added in there-necked flask, be warming up to 70 DEG C, be stirred to Tai-Ace S 150 and dissolve completely.Then add 16g alumine hydroxide colloid, be warming up to 95 DEG C, add 3g trolamine and 7g lactic acid, be incubated 30 minutes, lower the temperature and obtain A component.
(2), by 65g sodium-chlor, 35g Sodium Nitrite and 5g trolamine mixing and stirring obtain B component.
(3) by ratio of weight and the number of copies, 1 part of B component is dissolved in 10 parts of water, obtains B solution.
(4) by the B solution of A component and step 3 with ratio of weight and number: A component: the ratio of B solution=1:1 mixes.
The feature of the present embodiment is: in stablizer, the amount of trolamine is slightly many, can make to maintain stable form by the polyaluminium sulfate of described Tai-Ace S 150 and aluminium hydroxide gel precursor reactant gained and reach more than 6 months, has desirable effect.
Embodiment bis-:
In this example, described A component is composed of the following components: Tai-Ace S 150 42g, alumine hydroxide colloid 16g, trolamine 2g, lactic acid 7g, water 33g.Described B component is composed of the following components: sodium-chlor 63g, Sodium Nitrite 32g, trolamine 5g.A B component is dissolved in ten parts of water, obtains B solution, then by A component and B solution with A component: the ratio of B solution=1:1 is mixed.B solution is: B component+water.
This routine preparation method is as follows:
(1) 42g Tai-Ace S 150 and 33g water are added in there-necked flask, be warming up to 70 DEG C, be stirred to Tai-Ace S 150 and dissolve completely.Then add 16g alumine hydroxide colloid, be warming up to 96 DEG C, add 2g trolamine and 7g lactic acid, be incubated 30 minutes, lower the temperature and obtain A component.
(2), by 63g sodium-chlor, 32g Sodium Nitrite and 5g trolamine mixing and stirring obtain B component.
(3) by ratio of weight and the number of copies, 1 part of B component is dissolved in 10 parts of water, obtains B solution.
(4) by the B solution of A component and step 3 with ratio of weight and number: A component: the ratio of B solution=1:1 mixes.
The feature of the present embodiment is: in stablizer, the ratio of lactic acid is bigger, and the stability of its accelerating chemicals is slightly poor, but is still better than prior art.
Embodiment tri-:
In this example, described A component is composed of the following components: Tai-Ace S 150 41g, alumine hydroxide colloid 18g, trolamine 3g, citric acid 5g, water 33g.Described B component is composed of the following components: sodium-chlor 68g, Sodium Nitrite 28g, trolamine 4g.1 part of B component is dissolved in 12 parts of water, obtains B solution, then by A component and B solution with A component: the ratio of B solution=1:1.5 is mixed.B solution is: B component+water.
This routine preparation method is as follows:
(1) 41g Tai-Ace S 150 and 33g water are mixed, be warming up to 70 DEG C, be stirred to Tai-Ace S 150 and dissolve completely.Then add 18g alumine hydroxide colloid, be warming up to 98 DEG C, add 3g trolamine and 5g citric acid, be incubated 30 minutes, lower the temperature and obtain A component.
(2), by 68g sodium-chlor, 28g Sodium Nitrite and 4g trolamine mixing and stirring obtain B component.
(3) by ratio of weight and the number of copies, 1 part of B component is dissolved in 12 parts of water, obtains B solution.
(4) by the B solution of A component and step 3 with ratio of weight and number: A component: the ratio of B solution=1:1.5 mixes.
The feature of the present embodiment is: the addition of sodium-chlor is slightly many, and the intensity of foam cement rises faster, about 6 months, is obviously better than prior art by the stability of the polyaluminium sulfate of described Tai-Ace S 150 and aluminium hydroxide gel precursor reactant gained.
Embodiment tetra-:
In this example, described A component is composed of the following components: ferric sulfate 44g, alumine hydroxide colloid 19g, sodium gluconate 7g, water 30g.Described B component is composed of the following components: sodium sulfate 60g, Sodium Nitrite 35g, tri-isopropanolamine 5g.1 part of B component is dissolved in 15 parts of water, obtains B solution, then by A component and B solution with A component: the ratio of B solution=1:2 is mixed.B solution is: B component+water.
This routine preparation method is as follows:
(1) 44g ferric sulfate and 30g water are mixed, be warming up to 70 DEG C, be stirred to ferric sulfate and dissolve completely.Then add 19g alumine hydroxide colloid, be warming up to 100 DEG C, add 7g sodium gluconate, be incubated 30 minutes, lower the temperature and obtain A component.
(2), by 60g sodium sulfate, 35g Sodium Nitrite and 5g tri-isopropanolamine mixing and stirring obtain B component.
(3) by ratio of weight and the number of copies, 1 part of B component is dissolved in 15 parts of water, obtains B solution.
(4) by the B solution of A component and step 3 with ratio of weight and number: A component: the ratio of B solution=1:2 mixes.
The feature of the present embodiment is: stablizer is sodium gluconate, and the stability of its accelerating chemicals is a little less than embodiment tri-, but intensity rises soon.
?
Embodiment five:
In this example, described A component is composed of the following components: aluminum nitrate 40g, alumine hydroxide colloid 20g, ethylenediamine tetraacetic acid (EDTA) 8g, water 32g.Described B component is composed of the following components: aluminum chloride 66g, Sodium Nitrite 29g, acetic acid and acetate 5g.1 part of B component is dissolved in 11 parts of water, obtains B solution, then by A component and B solution with A component: the ratio of B solution=1:1.6 is mixed.B solution is: B component+water.
This routine preparation method is as follows:
(1) 40g aluminum nitrate and 32g water are mixed, be warming up to 70 DEG C, be stirred to aluminum nitrate and dissolve completely.Then add 20g alumine hydroxide colloid, be warming up to 99 DEG C, add 8g ethylenediamine tetraacetic acid (EDTA), be incubated 30 minutes, lower the temperature and obtain A component.
(2), by 66g aluminum chloride, 29g Sodium Nitrite and 5g acetic acid and acetate mixing and stirring obtain B component.
(3) by ratio of weight and the number of copies, 1 part of B component is dissolved in 11 parts of water, obtains B solution.
(4) by the B solution of A component and step 3 with ratio of weight and number: A component: the ratio of B solution=1:1.6 mixes.
The feature of the present embodiment is: in accelerating chemicals, with aluminum nitrate, its foam cement presetting period is approximately 4 minutes, is slightly longer than embodiment mono-.
Claims (4)
1. a foaming cement thermal insulation plate alkali-free hardening accelerator, is characterized in that: comprise A component, B component, water,
Described A compositions in weight percentage comprises: in 40-45% Tai-Ace S 150 or 40-45% aluminum nitrate or 40-45% ferric sulfate, choose any one kind of them, 15-20% alumine hydroxide colloid, the stablizer of 7-10%, 30-35% water; Described stablizer is chosen any one kind of them or is several in lactic acid, trolamine, citric acid, tartrate, ethylenediamine tetraacetic acid (EDTA) or sodium gluconate;
Described B compositions in weight percentage comprises: in the aluminum chloride of the sodium-chlor of 60-70% or the sodium sulfate of 60-70% or 60-70% any one, the Sodium Nitrite of 25-35%, the setting accelerator of 3-5%; Wherein said setting accelerator is chosen any one kind of them or is several in trolamine, calcium formiate, acetic acid and acetate, tri-isopropanolamine;
Described A component, B component, water, be by ratio of weight and the number of copies: B component: water=1:(10-15); And (B component+water): A component=(1-2): 1.
2. according to the foaming cement thermal insulation plate alkali-free hardening accelerator described in claim 1, it is characterized in that: in A component, in the time selecting 40-45% Tai-Ace S 150, described stablizer is the combination of trolamine and lactic acid.
3. according to the foaming cement thermal insulation plate alkali-free hardening accelerator described in claim 2, it is characterized in that: the weight percent of described trolamine is 2-3%, the weight percent of described lactic acid is 5-7%.
4. the preparation method of the foaming cement thermal insulation plate use alkali-free hardening accelerator as described in claim 1-3 any one, it is characterized in that: comprise the steps: the preparation of (1) A component: in 40-45% Tai-Ace S 150 or 40-45% aluminum nitrate or 40-45% ferric sulfate, choose any one kind of them, mix with the water of 30-35%, be warming up to 70 DEG C, being stirred to Tai-Ace S 150 or aluminum nitrate or ferric sulfate dissolves completely, then add the alumine hydroxide colloid of described 15-20%, be warming up to 95-100 DEG C, add again the stablizer of described 7-10%, be incubated 30 minutes, then cooling, obtains A component;
(2) preparation of B component: by the aluminum chloride of the sodium sulfate of the sodium-chlor of 60-70% or 60-70% or 60-70% any one, the Sodium Nitrite of 25-35%, the setting accelerator of 3-5% mix and stir, and obtains B component;
(3) B component is mixed with water, ratio of weight and number is B component: water=1:(10-15); B component is dissolved in water, form B solution;
(4) by the B solution of gained in step 3 and A component B solution by ratio of weight and the number of copies: A component=(1-2): 1 mixes.
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| CN201410210707.5A CN103992056A (en) | 2014-05-19 | 2014-05-19 | Alkali-free early strength agent for foam cement insulation board and preparation method thereof |
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| CN201410210707.5A CN103992056A (en) | 2014-05-19 | 2014-05-19 | Alkali-free early strength agent for foam cement insulation board and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109704665A (en) * | 2017-10-26 | 2019-05-03 | 咸树军 | A kind of manufacture craft of foamed concrete |
| CN109896771A (en) * | 2019-04-25 | 2019-06-18 | 杨炎轶 | A kind of alkali-free liquid accelerator and preparation method thereof |
| CN113548832A (en) * | 2021-08-26 | 2021-10-26 | 山东交通学院 | Alkali-free liquid foam concrete conditioning and solidifying agent and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249592A (en) * | 2011-06-01 | 2011-11-23 | 中国水利水电科学研究院 | Alkali-free chlorine-free high-early-strength liquid accelerator and preparation method thereof |
-
2014
- 2014-05-19 CN CN201410210707.5A patent/CN103992056A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249592A (en) * | 2011-06-01 | 2011-11-23 | 中国水利水电科学研究院 | Alkali-free chlorine-free high-early-strength liquid accelerator and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109704665A (en) * | 2017-10-26 | 2019-05-03 | 咸树军 | A kind of manufacture craft of foamed concrete |
| CN109896771A (en) * | 2019-04-25 | 2019-06-18 | 杨炎轶 | A kind of alkali-free liquid accelerator and preparation method thereof |
| CN113548832A (en) * | 2021-08-26 | 2021-10-26 | 山东交通学院 | Alkali-free liquid foam concrete conditioning and solidifying agent and preparation method thereof |
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Application publication date: 20140820 |