CN103524081A - Inorganic calcium sulfate whisker heat retaining panel and preparation method thereof - Google Patents
Inorganic calcium sulfate whisker heat retaining panel and preparation method thereof Download PDFInfo
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- CN103524081A CN103524081A CN201310395072.6A CN201310395072A CN103524081A CN 103524081 A CN103524081 A CN 103524081A CN 201310395072 A CN201310395072 A CN 201310395072A CN 103524081 A CN103524081 A CN 103524081A
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Abstract
The invention discloses an inorganic calcium sulfate whisker heat retaining panel. The inorganic calcium sulfate whisker heat retaining panel is characterized by being prepared from the following raw materials in percentage by weight: 30-50% of calcium sulfate whisker, 0.1-10% of Portland cement, 0.1-10% of silica fume, 2-5% of water-proofing agent and 30-50% of water. The invention also discloses a preparation method of the inorganic calcium sulfate whisker heat retaining panel. The inorganic calcium sulfate whisker heat retaining panel provided by the invention has the advantages of Al-grade fireproofing, light weight, high strength, excellent waterproof property, low heat conductivity coefficient and the like and is a high-quality heat retaining panel for building external walls, which has practical application value. According to the preparation method, a one-step molding method is adopted, and the technological processes comprise dry material premixing, liquid material premixing, pulping, standing still, molding, demolding, drying, high-temperature thermal treatment and the like.
Description
Technical field
The present invention relates to material of construction manufacturing technology field, be specifically related to a kind of inorganic calcium sulfate crystal whiskers warming plate for building and preparation method thereof.
Background technology
China is as building big country, and building energy consumption accounts for 27% left and right of national total energy consumption, but building energy conservation level far below World Developed Countries, unit building energy consumption be the close developed country of weather 3-5 doubly.Development of Novel building energy conservation environment-friendly materials, for improving resource utilization, improving environment, energy-saving and emission-reduction, have important practical significance.Heat insulation plate for building is mainly used in the positions such as building masonry wall, roof, window, floor, plays the effect of heat-insulation and heat-preservation, is the important indicator of building energy conservation environmental protection.Traditional lagging material be take organic insulation material as main, and heat insulation and preservation effect is good, but has inflammable problem; Public affairs disappear and explicitly call for " it is the material of A level that covil construction heat insulating material for external adopts combustionproperty " for [2011] No. 65.Inorganic heat insulation material has that fire resistance is good, intensity is high, without advantages such as thermal ageing problems, but water-intake rate is higher, machining property is poor, affects it and applies.At present, and even long period of time from now on, the required lagging material in energy saving building market should possess good, the waterproof and dampproof property of heat insulation property good, do not fire, light weight, moderate strength, drying shrinkage are little, environmental protection, price be easily by features such as user accept.
Calcium sulfate crystal whiskers is also gypsum primitive fiber, it is latest generation high performance composite toughener in the world, it is a kind of fibrous single crystal functional materials, the advantage that it has gathered mineral filler and fortifying fibre, being enhancing tissue the most high-grade in matrix material, is the green material that toxicity is minimum.Calcium sulfate crystal whiskers has fixing shape of cross section with respect to fiber, complete profile, perfect internal structure, there is very good mechanical property and physicals: high tensile strength, Young's modulus, abrasion performance, high temperature resistant, heat insulation, excellent chemical stability and consistency, especially the micro-filling of whisker and enhancement are good especially, and there is the unrivaled cost performance of other whisker, for papermaking, plastics, rubber, coating, the industries such as friction materials provide the reinforcing component of high-quality, the various novel high-caliber lightweights of available its exploitation, high than strong, wear-resisting reinforced composite.
Summary of the invention
The deficiency existing for prior art, the object of the present invention is to provide a kind of inorganic calcium sulfate crystal whiskers warming plate for building and preparation method thereof, to prepare, there is good heat preservation and insulation, high-strength light, water resistance are excellent, meet the inorganic calcium sulfate crystal whiskers warming plate that A1 level fire resistance requires.
The technical scheme that the present invention adopts is for achieving the above object:
A calcium sulfate crystal whiskers warming plate, its raw material by following weight percent is made:
The α type hemihydrate calcium sulfate crystal whisker of described calcium sulfate crystal whiskers for being prepared from by industry by-product gypsum, length is 10～100 μ m, and length-to-diameter ratio is 10～20, and described industry by-product gypsum comprises desulfurated plaster, phosphogypsum or fluorgypsum.
Described inorganic calcium sulfate crystal whiskers warming plate, comprises a large amount of microvoid structures in its body, micro pore volume accounting is 40～60%, and dry density is 800～850kg/m<sup TranNum="69">3</sup>, water-intake rate is≤5%, thermal conductivity is<0.1W/ (m*K), meets the requirement of A1 level fire resistance.
The preparation method of inorganic calcium sulfate crystal whiskers warming plate, it comprises the steps:
(1) preparing material: each component of raw material and weight percent thereof are as follows:
(2) calcium sulfate crystal whiskers, Portland cement, silicon ash are put in agitation vat according to weight percent in step (1), pre-mixing is even, obtains dry blend;
(3) water-resisting agent and water are mixed according to weight percent in step (1), join in dry blend, continue to stir, obtain slurry;
(4) slurry is poured in mould, the standing moulding of room temperature, the demoulding obtains wet base;
(5) wet base obtains inorganic calcium sulfate crystal whiskers warming plate for building through super-dry, high-temperature heat treatment.
Being dried in described step (5), its drying process adopts baking oven forced air drying, and drying temperature is 80～110 ℃, and be 12～24h time of drying.
High-temperature heat treatment in described step (5), its heat treatment process adopts Fractional Heat-treatment mode, and 150～250 ℃ of first low temperature, are incubated 1～3h, then 400～600 ℃ of high temperature, are incubated 2～4h.
Beneficial effect of the present invention:
1. energy-conserving and environment-protective: the raw material adopting is the α type hemihydrate calcium sulfate crystal whisker being prepared from by industry by-product gypsums such as desulfurated plaster, phosphogypsum or fluorgypsums, makes full use of coal-burning power plant, phosphorous chemical industry and fluorine chemical industry by-product gypsum, save energy, protection of the environment;
2. adopt one-step moulding method, technological process is simple and easy to control, is easy to realize suitability for industrialized production;
3. prepared inorganic calcium sulfate crystal whiskers warming plate has A1 level fire resistance, has overcome the inflammable defect of organic heat-insulating plate, has solved again the poor problem of inorganic heat-insulation board water resistance simultaneously, has good water-repellancy;
4. prepared inorganic calcium sulfate crystal whiskers warming plate has the characteristic of high-strength light, and dry density is little, and physical strength is high, meets the property indices requirement of heat insulating material for external completely, and construction cost is low.
Below in conjunction with accompanying drawing and embodiment, the present invention is further described.
Accompanying drawing explanation
Fig. 1 is the hydrophobic properties of the surface schematic diagram of inorganic calcium sulfate crystal whiskers warming plate of the present invention;
Fig. 2 is the Metallograph in the transverse section of inorganic calcium sulfate crystal whiskers warming plate of the present invention;
Embodiment
Embodiment 1: the preparation method of the inorganic calcium sulfate crystal whiskers warming plate that the present embodiment provides, it comprises the steps:
(1) preparing material: each component of raw material and weight percentage thereof are as follows:
(2) take 900g calcium sulfate crystal whiskers, 20g Portland cement, 10g silicon ash, put in agitation vat, be uniformly mixed, obtain dry blend;
(3) take 100g water-resisting agent and join in 970g water, be uniformly mixed, join in above-mentioned dry blend, continue to stir, obtain slurry;
(4) slurry is poured in the mould of 90cm * 90cm * 10cm, the standing moulding of room temperature, the demoulding obtains wet base;
(5) wet base is positioned over 100 ℃ of dry 20h in air dry oven, and in program control high-temperature calcination stove, 250 ℃ of calcining 2h, 500 ℃ of calcining 2h, obtain inorganic calcium sulfate crystal whiskers warming plate for building.
The inorganic calcium sulfate crystal whiskers warming plate of above-mentioned preparation, property indices all can meet the indices of standard GB/T/T20473-2006 regulation.Micro pore volume accounting is 50%, and dry density is 820kg/m
3, water-intake rate is 3.2%, thermal conductivity is 0.036W/ (m*K), meets the requirement of A1 level fire resistance.
Embodiment 2:
Inorganic calcium sulfate crystal whiskers warming plate that the present embodiment provides and preparation method thereof, it is substantially the same manner as Example 1, and its difference is:
A preparation method for inorganic calcium sulfate crystal whiskers warming plate, it comprises the steps:
(1) preparing material: each component of raw material and weight percentage thereof are as follows:
(2) take 1000g calcium sulfate crystal whiskers, 10g Portland cement, 10g silicon ash, put in agitation vat, be uniformly mixed, obtain dry blend;
(3) take 80g water-resisting agent and join in 900g water, be uniformly mixed, join in above-mentioned dry blend, continue to stir, obtain slurry;
(4) slurry is poured in the mould of 90cm * 90cm * 10cm, the standing moulding of room temperature, the demoulding obtains wet base;
(5) wet base is positioned over 100 ℃ of dry 15h in air dry oven, and in program control high-temperature calcination stove, 200 ℃ of calcining 2h, 400 ℃ of calcining 2h, obtain inorganic calcium sulfate crystal whiskers warming plate for building.
The inorganic calcium sulfate crystal whiskers warming plate of above-mentioned preparation, property indices all can meet the indices of standard GB/T/T20473-2006 regulation.Micro pore volume accounting is 60%, and dry density is 810kg/m
3, water-intake rate is 3.0%, thermal conductivity is 0.032W/ (m*K), meets the requirement of A1 level fire resistance.
Embodiment 3:
Inorganic calcium sulfate crystal whiskers warming plate that the present embodiment provides and preparation method thereof, itself and embodiment 1,2 are basic identical, and its difference is:
A preparation method for inorganic calcium sulfate crystal whiskers warming plate, it comprises the steps:
(1) preparing material: each component of raw material and weight percentage thereof are as follows:
(2) take 800g calcium sulfate crystal whiskers, 200g Portland cement, 100g silicon ash, put in agitation vat, be uniformly mixed, obtain dry blend;
(3) take 60g water-resisting agent and join in 840g water, be uniformly mixed, join in above-mentioned dry blend, continue to stir, obtain slurry;
(4) slurry is poured in the mould of 90cm * 90cm * 10cm, the standing moulding of room temperature, the demoulding obtains wet base;
(5) wet base is positioned over 110 ℃ of dry 12h in air dry oven, and in program control high-temperature calcination stove, 150 ℃ of calcining 3h, 400 ℃ of calcining 4h, obtain inorganic calcium sulfate crystal whiskers warming plate for building.
The inorganic calcium sulfate crystal whiskers warming plate of above-mentioned preparation, property indices all can meet the indices of standard GB/T/T20473-2006 regulation.Micro pore volume accounting is 40%, and dry density is 850kg/m
3, water-intake rate is 3.3%, thermal conductivity is 0.037W/ (m*K), meets the requirement of A1 level fire resistance.
Embodiment 4:
Inorganic calcium sulfate crystal whiskers warming plate that the present embodiment provides and preparation method thereof, itself and embodiment 1,2,3 are basic identical, and its difference is:
A preparation method for inorganic calcium sulfate crystal whiskers warming plate, it comprises the steps:
(1) preparing material: each component of raw material and weight percentage thereof are as follows:
(2) take 600g calcium sulfate crystal whiskers, 200g Portland cement, 200g silicon ash, put in agitation vat, be uniformly mixed, obtain dry blend;
(3) take 100g water-resisting agent and join in 900g water, be uniformly mixed, join in above-mentioned dry blend, continue to stir, obtain slurry;
(4) slurry is poured in the mould of 90cm * 90cm * 10cm, the standing moulding of room temperature, the demoulding obtains wet base;
(5) wet base is positioned over 80 ℃ of dry 24h in air dry oven, and in program control high-temperature calcination stove, 250 ℃ of calcining 1h, 600 ℃ of calcining 2h, obtain inorganic calcium sulfate crystal whiskers warming plate for building.
The inorganic calcium sulfate crystal whiskers warming plate of above-mentioned preparation, property indices all can meet the indices of standard GB/T/T20473-2006 regulation.Micro pore volume accounting is 50%, and dry density is 850kg/m
3, water-intake rate is 3.2%, thermal conductivity is 0.034W/ (m*K), meets the requirement of A1 level fire resistance.
Embodiment 5:
A preparation method for inorganic calcium sulfate crystal whiskers warming plate, it comprises the steps:
(1) preparing material: each component of raw material and weight percentage thereof are as follows:
(2) take 1000g calcium sulfate crystal whiskers, 2g Portland cement, 98g silicon ash, put in agitation vat, be uniformly mixed, obtain dry blend;
(3) take 40g water-resisting agent and join in 860g water, be uniformly mixed, join in above-mentioned dry blend, continue to stir, obtain slurry;
(4) slurry is poured in the mould of 90cm * 90cm * 10cm, the standing moulding of room temperature, the demoulding obtains wet base;
(5) wet base is positioned over 100 ℃ of dry 18h in air dry oven, and in program control high-temperature calcination stove, 220 ℃ of calcining 2h, 500 ℃ of calcining 3h, obtain inorganic calcium sulfate crystal whiskers warming plate for building.
Inorganic calcium sulfate crystal whiskers warming plate prepared by aforesaid method and component, property indices all can meet the indices of standard GB/T/T20473-2006 regulation.Micro pore volume accounting is 55%, and dry density is 830kg/m
3, water-intake rate is 3.5%, thermal conductivity is 0.031W/ (m*K), meets the requirement of A1 level fire resistance.
Various embodiments of the present invention adopt the calcium sulfate crystal whiskers of Different Weight degree in above-mentioned scope, Portland cement, and silicon ash, water-resisting agent, water all can prepare inorganic calcium sulfate crystal whiskers warming plate.
Product provided by the invention and method, tool has the following advantages:
1. energy-conserving and environment-protective: the raw material adopting is the α type hemihydrate calcium sulfate crystal whisker being prepared from by industry by-product gypsums such as desulfurated plaster, phosphogypsum or fluorgypsums, makes full use of coal-burning power plant, phosphorous chemical industry and fluorine chemical industry by-product gypsum, save energy, protection of the environment;
2. adopt one-step moulding method, technological process is simple and easy to control, is easy to realize suitability for industrialized production;
3. prepared inorganic calcium sulfate crystal whiskers warming plate has A1 level fire resistance, has overcome the inflammable defect of organic heat-insulating plate, has solved again the poor problem of inorganic heat-insulation board water resistance simultaneously, has good water-repellancy;
4. prepared inorganic calcium sulfate crystal whiskers warming plate has the characteristic of high-strength light, and dry density is little, and physical strength is high, meets the property indices requirement of heat insulating material for external completely, and construction cost is low.
But the foregoing is only better possible embodiments of the present invention, not in order to limit to the scope of the claims of the present invention, thus other embodiment of the step of recording in all utilization the present invention, component, and the equivalence of doing variation, be all included in protection scope of the present invention.
Claims (6)
1. an inorganic calcium sulfate crystal whiskers warming plate, is characterized in that: its raw material by following weight percent is made:
2. a kind of inorganic calcium sulfate crystal whiskers warming plate according to claim 1, it is characterized in that: the α type hemihydrate calcium sulfate crystal whisker of described calcium sulfate crystal whiskers for being prepared from by industry by-product gypsum, length is 10～100 μ m, length-to-diameter ratio is 10～20, and described industry by-product gypsum comprises desulfurated plaster, phosphogypsum or fluorgypsum.
3. a kind of inorganic calcium sulfate crystal whiskers warming plate according to claim 1, is characterized in that: described inorganic calcium sulfate crystal whiskers warming plate, in its body, comprise a large amount of microvoid structures, and micro pore volume accounting is 40～60%, dry density is 800～850kg/m<sup TranNum="163">3</sup>, water-intake rate is≤5%, thermal conductivity is<0.1W/ (m*K), meets the requirement of A1 level fire resistance.
4. according to the preparation method of a kind of inorganic calcium sulfate crystal whiskers warming plate described in claim 1～3, it is characterized in that: it comprises the steps:
(1) preparing material: each component of raw material and weight percent thereof are as follows:
(2) calcium sulfate crystal whiskers, Portland cement, silicon ash are put in agitation vat according to weight percent in step (1), pre-mixing is even, obtains dry blend;
(3) water-resisting agent and water are mixed according to weight percent in step (1), join in dry blend, continue to stir, obtain slurry;
(4) slurry is poured in mould, the standing moulding of room temperature, the demoulding obtains wet base;
(5) wet base obtains inorganic calcium sulfate crystal whiskers warming plate for building through super-dry, high-temperature heat treatment.
5. the preparation method of a kind of inorganic calcium sulfate crystal whiskers warming plate according to claim 4, is characterized in that: dry in described step (5), and its drying process adopts baking oven forced air drying, and drying temperature is 80～110 ℃, and be 12～24h time of drying.
6. the preparation method of a kind of inorganic calcium sulfate crystal whiskers warming plate according to claim 4, it is characterized in that: the high-temperature heat treatment in described step (5), its heat treatment process adopts Fractional Heat-treatment mode, 150～250 ℃ of first low temperature, insulation 1～3h, high temperature is 400～600 ℃ again, is incubated 2～4h.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106007424A (en) * | 2016-05-19 | 2016-10-12 | 西安建筑科技大学 | Calcium aluminate cement containing calcium aluminate nanowhiskers and preparation method thereof |
| CN107117841A (en) * | 2017-05-02 | 2017-09-01 | 武汉理工大学 | A kind of activated fibre matter sulphate aluminium cement mortar reinforcing agent and preparation method thereof |
| CN107266121A (en) * | 2017-07-19 | 2017-10-20 | 合肥广民建材有限公司 | A kind of cement insulation board and preparation method thereof |
| CN108690255A (en) * | 2017-04-11 | 2018-10-23 | 合肥杰事杰新材料股份有限公司 | A kind of low cost can hide wood-plastic board of infrared acquisition and preparation method thereof |
| CN113716908A (en) * | 2021-10-14 | 2021-11-30 | 盐城工学院 | Modified calcium sulfate whisker reinforced geopolymer and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102408207A (en) * | 2011-08-05 | 2012-04-11 | 上海丰慧节能环保科技有限公司 | Inorganic heat-insulation board and preparation method thereof |
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- 2013-09-03 CN CN201310395072.6A patent/CN103524081B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102408207A (en) * | 2011-08-05 | 2012-04-11 | 上海丰慧节能环保科技有限公司 | Inorganic heat-insulation board and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106007424A (en) * | 2016-05-19 | 2016-10-12 | 西安建筑科技大学 | Calcium aluminate cement containing calcium aluminate nanowhiskers and preparation method thereof |
| CN108690255A (en) * | 2017-04-11 | 2018-10-23 | 合肥杰事杰新材料股份有限公司 | A kind of low cost can hide wood-plastic board of infrared acquisition and preparation method thereof |
| CN107117841A (en) * | 2017-05-02 | 2017-09-01 | 武汉理工大学 | A kind of activated fibre matter sulphate aluminium cement mortar reinforcing agent and preparation method thereof |
| CN107266121A (en) * | 2017-07-19 | 2017-10-20 | 合肥广民建材有限公司 | A kind of cement insulation board and preparation method thereof |
| CN113716908A (en) * | 2021-10-14 | 2021-11-30 | 盐城工学院 | Modified calcium sulfate whisker reinforced geopolymer and preparation method thereof |
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Effective date of registration: 20230426 Address after: 200444 No. 99, upper road, Shanghai, Baoshan District Patentee after: Shanghai University Address before: 523000 Songshan Lake Science and Technology Industrial Park, Dongguan City, Guangdong Province, No. 9 Building, First Floor Patentee before: DONGGUAN-SHU INSTITUTE OF NANOTECHNOLOGY Patentee before: Shanghai University |