CN103396159A - Active belite sulphoaluminate foamed cement heat-insulating material and preparation method thereof - Google Patents
Active belite sulphoaluminate foamed cement heat-insulating material and preparation method thereof Download PDFInfo
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- CN103396159A CN103396159A CN201310329572XA CN201310329572A CN103396159A CN 103396159 A CN103396159 A CN 103396159A CN 201310329572X A CN201310329572X A CN 201310329572XA CN 201310329572 A CN201310329572 A CN 201310329572A CN 103396159 A CN103396159 A CN 103396159A
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Abstract
The invention discloses an active belite sulphoaluminate foamed cement heat-insulating material. The heat-insulating material is prepared from the following raw materials in parts by weight: 50 to 55 parts of active belite sulphoaluminate foamed cement, 10 to 15 parts of coal ash, 0.1 to 0.2 part of polypropylene fiber, 0.8 to 1.0 part of calcium stearate, 0.5 to 0.6 part of a polycarboxylic acid high-efficiency water-reducing agent, 0.02 to 0.03 part of lithium carbonate, 3.0 to 4.0 parts of hydrogen peroxide at the concentration of 27.5% and 30 to 35 parts of water. The invention also discloses a preparation method of the active belite sulphoaluminate foamed cement heat-insulating material. The foamed cement heat-insulating material with excellent performance is prepared from a novel cementitious material, namely, active belite sulphoaluminate foamed cement instead of ordinary Portland cement or sulphoaluminate cement. The preparation process is simple to operate and easy to control, the cost of raw materials is low, and the preparation cost of the foamed cement is obviously reduced.
Description
Technical field
The present invention relates to a kind of inorganic heat insulation material and preparation method thereof, particularly a kind of active belite sulplo-aluminate foaming cement thermal insulation material and preparation method thereof.
Background technology
The lagging material that the traditional external wall heat insulation system of China adopts, be mainly some organic materialss such as styrofoam, extruded sheet, and their unit weight is lower than 250kg/m
3, thermal conductivity is at 0.05w/(k.m) below, have advantages of that light weight, thermal conductivity are little.But these materials have exposed increasing problem in long-term use procedure, as complicated as easy aging, maintain and replace etc., in recent years by several great fire failures of initiation, caused a large amount of loss of life and personal injury and property damage for especially country and society, it is applied and suffered extensive query, therefore, develop durable, fire-retardant inorganic heat insulation material and be subject to people's generally attention, wherein the foaming cement thermal insulation material has obtained outer expert's favor in the industry, has obtained development fast.
The gelling material that present foaming cement thermal insulation material uses is mainly ordinary Portland cement and aluminosulfate cement.The time of coagulation of ordinary Portland cement is longer, early strength is lower, lagging material is easy " mould collapses " in preparation process, after aquation solution basicity causes greatly hydrogen peroxide to add, thereby expansion rate is wayward, whole foam process difficulty is strengthened, the dry shrinkage and cracking phenomenon easily appears in the product later stage, seriously reduces the heat-insulating property of material.The early strength that has aluminosulfate cement develops soon, time of coagulation is short; aquation solution basicity is little; make expansion rate easily control; it is simple that foam process becomes; due to can demoulding within a short period of time and cutting, when large-scale production, can also increase substantially the production efficiency of product, save production cost; the product dry density that obtains is less, and performance is more stable.Dry density is less than 250kg/m at present
3The foaming cement thermal insulation material, great majority adopt aluminosulfate cement to prepare.But aluminosulfate cement, its price comparison is high, two times of ordinary Portland cement, when preparing the foaming cement thermal insulation material, although have advantages of fire-retardant, good endurance, with those cheap organic insulation materials, compare, advantage can not be given full play to, reduce the cost of manufacture of foaming cement thermal insulation material, improve the competitive edge of product, become foaming cement thermal insulation Materials matter of utmost importance in the urgent need to address.
Active belite sulphoaluminate cement clinker, it is the newly-invented a kind of new cement clinker of China (number of patent application 201210022401.8), by sulphoaluminate cement clinker mineral and silicate cement mineral, pass through the special designs that forms, its raw material has adopted a large amount of industrial solid waste residues, the calcining cost is starkly lower than sulphoaluminate cement clinker, even lower than Portland clinker, its price only have aluminosulfate cement half even to lack.Active belite aluminosulfate cement, be to add proper amount of gypsum and the levigate gained of Wingdale by its grog, and it has the fast solidifying and high early strong characteristics similar to aluminosulfate cement, has again the characteristics of the later strength sustainable growth similar to ordinary Portland cement.
Summary of the invention
The object of the invention is to, adopt a kind of new gelling material substituted for silicon acid salt cement or aluminosulfate cement, provide a kind of and both can guarantee that foam process control was simple, can obtain superperformance again, a kind of foaming cement thermal insulation material of decrease cost of manufacture and preparation method thereof.
A technical scheme of the present invention is: a kind of active belite sulplo-aluminate foaming cement thermal insulation material, and this lagging material is made by the raw material of following weight part: active belite aluminosulfate cement 50-55 part; Flyash 10-15 part; Polypropylene fibre 0.1-0.2 part; Calcium stearate 0.8-1.0 part; High-efficiency water-reducing agent of poly-carboxylic acid 0.5-0.6 part; Quilonum Retard 0.02-0.03 part; Concentration is hydrogen peroxide 3.0-4.0 part of 27.5%, water 30-35 part.
Described active belite aluminosulfate cement is to form by the material of following weight part is levigate: 90 parts of active belite sulphoaluminate cement clinkers; 5 parts of gypsum; 5 parts of Wingdales.
Described active belite sulphoaluminate cement clinker has the β type C2S of the mineral composition of following weight percent: 25-30%; The à type C2S of 25-30%; 28-40%'s
The C4AF of 4-12%; The amorphous phase material of 4-8%.
Another technical scheme of the present invention is: the preparation method of above-mentioned lagging material comprises following steps:
(1) proportionally get raw material;
(2) pour active belite aluminosulfate cement, flyash, polypropylene fibre, calcium stearate into stirrer, premixing 1-2min, stir, and forms the dry powder blend material;
(3) Quilonum Retard, high-efficiency water-reducing agent of poly-carboxylic acid and water are mixed to form to solution, and solution is poured in the dry powder blend material in step (2), stir 2-3min, form cement slurry;
(4) add hydrogen peroxide, after rapid stirring 8-10s, be poured in mould, after moulding, maintenance gets product.
The invention has the beneficial effects as follows: (1) foam cement of the present invention belongs to inorganic heat insulation material, and fire resistance is good, belongs to A level non-combustible material, and long service life, can reach and the same life-span of buildings.(2) quality is light, is easy to claddingly, and porosity 80-90%, diameter are more than 80% of Zhan Zong hole, hole of 0.5-2mm, dry density 180-200kg/m
3.(3) thermal conductivity is little, high insulating effect, thermal conductivity is at 0.04-0.05w/(m.k) left and right.(4) intensity is high, and sustainable growth, and 3d intensity can reach 0.6MPa, and 28d intensity is more than 0.8MPa.(5) whole technological process is simple to operate, easily controls.
In sum, the new gelling material that the present invention adopts-active belite aluminosulfate cement, have advantages of simultaneously aluminosulfate cement and common silicate cement when preparing foam cement, the foam cement 3d intensity of preparation can reach 0.6MPa, more than 28d intensity can reach 0.8MPa, unit weight can be controlled in 180-200kg/m, and thermal conductivity can be controlled in 0.05w/(m.k) below, the gelling material expense for preparing the lagging material needs can reduce half.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail, so that those skilled in the art more understands the present invention, but with this, does not limit the present invention.
Embodiment 1:
According to the following weight proportioning, prepare raw material:
Preparation process is as follows:
Pour active belite aluminosulfate cement, flyash, polypropylene fibre, calcium stearate into stirrer, premixing 1min, stir, and forms the dry powder blend material;
Under 20-30 ℃ of normal temperature condition, Quilonum Retard, high-efficiency water-reducing agent of poly-carboxylic acid and water are mixed to form to solution, and solution is poured in the above-mentioned stirrer that the dry powder blend material is housed and stirs 3min, form cement slurry;
Adding concentration is 27.5% hydrogen peroxide, after rapid stirring 10s, be poured in mould, after moulding maintenance both finished product.
In the present embodiment, above-mentioned active belite aluminosulfate cement is to form by the material of following weight part is levigate: 90 parts of active belite sulphoaluminate cement clinkers; 5 parts of gypsum; 5 parts of Wingdales.Above-mentioned active belite sulphoaluminate cement clinker has the mineral composition of following weight percent: 25% β type C2S; 25% à type C2S; 28%
4% C4AF; 4% amorphous phase material.
After testing, gained finished product fundamental property is as follows: 3d intensity 0.64MPa, 28d intensity 0.83MPa, unit weight 190kg/m
3, thermal conductivity 0.048w/(m.k), porosity 88%.
Embodiment 2:
According to the following weight proportioning, prepare raw material:
Preparation process is as follows:
Pour active belite aluminosulfate cement, flyash, polypropylene fibre, calcium stearate into stirrer, premixing 1min, stir, and forms the dry powder blend material;
Under 20-30 ℃ of normal temperature condition, Quilonum Retard, high-efficiency water-reducing agent of poly-carboxylic acid and water (normal temperature gets final product) are mixed to form to solution, and solution is poured in the above-mentioned stirrer that the dry powder blend material is housed and stirs 3min, form cement slurry;
Adding concentration is 27.5% hydrogen peroxide, after rapid stirring 10s, be poured in mould, after moulding maintenance both finished product.
Above-mentioned active belite aluminosulfate cement is to form by the material of following weight part is levigate: 90 parts of active belite sulphoaluminate cement clinkers; 5 parts of gypsum; 5 parts of Wingdales.Above-mentioned active belite sulphoaluminate cement clinker has the mineral composition of following weight percent: 30% β type C2S; 30% à type C2S; 40%
12% C4AF; 8% amorphous phase material.
After testing: gained finished product fundamental property is as follows: 3d intensity 0.60MPa, 28d intensity 0.79MPa, unit weight 201kg/m
3, thermal conductivity 0.050w/(m.k), porosity 86%.
Embodiment 3:
According to the following weight proportioning, prepare raw material:
Preparation process is as follows:
Pour active belite aluminosulfate cement, flyash, polypropylene fibre, calcium stearate into stirrer, premixing 1min, stir, and forms the dry powder blend material;
Under 20-30 ℃ of normal temperature condition, Quilonum Retard, high-efficiency water-reducing agent of poly-carboxylic acid and water (normal temperature gets final product) are mixed to form to solution, and solution is poured in the above-mentioned stirrer that the dry powder blend material is housed and stirs 3min, form cement slurry;
Adding concentration is 27.5% hydrogen peroxide, after rapid stirring 8s, be poured in mould, after moulding maintenance both finished product.
Above-mentioned active belite aluminosulfate cement is to form by the material of following weight part is levigate: 90 parts of active belite sulphoaluminate cement clinkers; 5 parts of gypsum; 5 parts of Wingdales.Above-mentioned active belite sulphoaluminate cement clinker has the mineral composition of following weight percent: 27% β type C2S; 28% à type C2S; 35%
10% C4AF; 6% amorphous phase material.
Gained finished product fundamental property is as follows after testing: 3d intensity 0.62MPa, 28d intensity 0.81MPa, unit weight 182kg/m
3, thermal conductivity 0.042w/(m.k), porosity 90%.
Embodiment 4:
According to the following weight proportioning, prepare raw material:
Preparation process is as follows:
Pour active belite aluminosulfate cement, flyash, polypropylene fibre, calcium stearate into stirrer, premixing 1min, stir, and forms the dry powder blend material;
Under 20-30 ℃ of normal temperature condition, Quilonum Retard, high-efficiency water-reducing agent of poly-carboxylic acid and water (normal temperature gets final product) are mixed to form to solution, and solution is poured in the above-mentioned stirrer that the dry powder blend material is housed and stirs 3min, form cement slurry;
Adding concentration is 27.5% hydrogen peroxide, after rapid stirring 8s, be poured in mould, after moulding maintenance both finished product.
Above-mentioned active belite aluminosulfate cement is to form by the material of following weight part is levigate: 90 parts of active belite sulphoaluminate cement clinkers; 5 parts of gypsum; 5 parts of Wingdales.Above-mentioned active belite sulphoaluminate cement clinker has the mineral composition of following weight percent: 27% β type C2S; 30% à type C2S; 28%
8% C4AF; 5% amorphous phase material.
Gained finished product fundamental property is as follows after testing: 3d intensity 0.63MPa, 28d intensity 0.82MPa, unit weight 180kg/m
3, thermal conductivity 0.040w/(m.k), porosity 91%.
To sum up, when preparing foam cement, active belite aluminosulfate cement can be the same with aluminosulfate cement, makes operating procedure simple, and the product performance early strength is high; And, aspect the later strength development, have again the long-term growth similar with ordinary Portland cement, overcome the weakness that the aluminosulfate cement later strength does not increase retraction even; Aspect raw materials cost control, overcome aluminosulfate cement on the high side, the sexual valence of product is the relative organic materials of competitive edge problem on the weak side when.Therefore gather aluminosulfate cement and ordinary Portland cement advantage separately, made up shortcoming separately.
Claims (4)
1. an active belite sulplo-aluminate foaming cement thermal insulation material, is characterized in that, this lagging material is made by the raw material of following weight part: active belite aluminosulfate cement 50-55 part; Flyash 10-15 part; Polypropylene fibre 0.1-0.2 part; Calcium stearate 0.8-1.0 part; High-efficiency water-reducing agent of poly-carboxylic acid 0.5-0.6 part; Quilonum Retard 0.02-0.03 part; Concentration is hydrogen peroxide 3.0-4.0 part of 27.5%, water 30-35 part.
2. active belite sulplo-aluminate foaming cement thermal insulation material according to claim 1, is characterized in that described active belite aluminosulfate cement is to form by the material of following weight part is levigate: 90 parts of active belite sulphoaluminate cement clinkers; 5 parts of gypsum; 5 parts of Wingdales.
3. active belite sulplo-aluminate foaming cement thermal insulation material according to claim 2, is characterized in that, described active belite sulphoaluminate cement clinker has the β type C2S of the mineral composition of following weight percent: 25-30%; The à type C2S of 25-30%; 28-40%'s
The C4AF of 4-12%; The amorphous phase material of 4-8%.
4. the preparation method of lagging material as claimed in claim 1, is characterized in that, comprises following steps:
(1) proportionally get raw material;
(2) pour active belite aluminosulfate cement, flyash, polypropylene fibre, calcium stearate into stirrer, premixing 1-2min, stir, and forms the dry powder blend material;
(3) Quilonum Retard, high-efficiency water-reducing agent of poly-carboxylic acid and water are mixed to form to solution, and solution is poured in the dry powder blend material in step (2), stir 2-3min, form cement slurry;
(4) add hydrogen peroxide, after rapid stirring 8-10s, be poured in mould, after moulding, maintenance gets product.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104529509A (en) * | 2014-12-15 | 2015-04-22 | 广西科技大学 | Compound foamed cement slab for exterior-wall external insulation systems and preparation method thereof |
| CN105218044A (en) * | 2015-09-07 | 2016-01-06 | 李启金 | A kind of lightweight high bond strength cement insulation board and preparation method thereof |
| CN106142294A (en) * | 2016-08-20 | 2016-11-23 | 桐乡市嘉乐玻璃马赛克有限公司 | A kind of cement tile mixed with crushed crude pearlite and preparation method thereof |
| CN106810175A (en) * | 2017-02-24 | 2017-06-09 | 天津水泥工业设计研究院有限公司 | A kind of high belite sulphoaluminate cement base gravity flowing levelling mortar |
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| CN102718542A (en) * | 2012-03-08 | 2012-10-10 | 白庆法 | Insulation material for fire-resistant external wall and preparation method thereof |
| CN102838375A (en) * | 2012-09-17 | 2012-12-26 | 贾立群 | Inorganic foam heat insulating material and preparation method thereof |
| CN102910934A (en) * | 2012-10-19 | 2013-02-06 | 济南大学 | Light and flexible foaming cement insulation board and preparation method thereof |
| CN102992802A (en) * | 2012-08-21 | 2013-03-27 | 江苏百瑞吉新材料有限公司 | Fireproof cement foam insulation board |
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Patent Citations (5)
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| CN102584045A (en) * | 2012-02-01 | 2012-07-18 | 天津中材工程研究中心有限公司 | Active belite-sulphate aluminum cement clinker and preparation method for active belite-sulphate aluminum cement clinker |
| CN102718542A (en) * | 2012-03-08 | 2012-10-10 | 白庆法 | Insulation material for fire-resistant external wall and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104529509A (en) * | 2014-12-15 | 2015-04-22 | 广西科技大学 | Compound foamed cement slab for exterior-wall external insulation systems and preparation method thereof |
| CN105218044A (en) * | 2015-09-07 | 2016-01-06 | 李启金 | A kind of lightweight high bond strength cement insulation board and preparation method thereof |
| CN106142294A (en) * | 2016-08-20 | 2016-11-23 | 桐乡市嘉乐玻璃马赛克有限公司 | A kind of cement tile mixed with crushed crude pearlite and preparation method thereof |
| CN106142294B (en) * | 2016-08-20 | 2018-11-20 | 王锦霞 | A kind of cement tile and preparation method thereof mixed with crushed crude pearlite |
| CN106810175A (en) * | 2017-02-24 | 2017-06-09 | 天津水泥工业设计研究院有限公司 | A kind of high belite sulphoaluminate cement base gravity flowing levelling mortar |
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Application publication date: 20131120 |