CN104761280A - Magnesium oxychloride and magnesium oxysulfate compound cement foam fire door core board and preparation method thereof - Google Patents
Magnesium oxychloride and magnesium oxysulfate compound cement foam fire door core board and preparation method thereof Download PDFInfo
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Abstract
The invention provides a magnesium oxychloride and magnesium oxysulfate compound cement foam fire door core board and a preparation method thereof. The core board comprises the following raw materials: magnesium oxide, an anhydrous magnesium chloride solution, a magnesium sulfate solution, desulfurization gypsum, superfine carbon fiber, superfine micro-silica, a cationic polyacrylamide solution, ferrous sulfate and an efficient foaming agent, between which the ratio is 100:60:66.6:2:0.8:0.5:0.5:0.5:0.5. The method comprises the following steps: uniformly mixing the anhydrous magnesium chloride solution and the magnesium sulfate solution, adding the anhydrous magnesium chloride solution and the magnesium sulfate solution into a stirring machine, adding the cationic polyacrylamide solution and a ferrous sulfate solution into the stirring machine, and adding superfine carbon fiber, lightly calcined magnesium oxide, desulfurization gypsum, superfine microsilica and a foaming solution in sequence while performing stirring; pushing a stack of moulds, in which foaming slurry is poured, into a curing stove, curing the moulds for 8-10h, and then performing demoulding; and after demoulding, performing moisture preservation and temperature control curing and water control curing respectively until the moisture content is less than or equal to 10%. The core board provided by the invention is environmentally friendly and light, has high-strength and favorable high temperature resistance and meets the national requirements for fire prevention and safety.
Description
Technical field
The invention belongs to building material made technical field, be specifically related to foamed fireproofing door panel of a kind of magnesia oxychloride cement+magnesium oxysulfide concrete compound and preparation method thereof.
Background technology
At present, along with the development of national real estate industry, the demand of fire-proof construction material is more and more wider, requires also more and more higher.Fire door has multi-functional and the practicality such as closed, back-fire relief, partition, safety, insulation, sound insulation, and becoming in buildings must an indispensable integral part, and is more and more subject to the great attention of national construction sector and NFA general bureau.Fire door implements system of licensing, production fire door must obtain the production licence that NFA general bureau issues, and anti-fire door core board is the core material of fire door indispensability, combustionproperty and safety performance need the type inspection obtaining relevant departments, thus the production of anti-fire door core board is had higher requirement.
Due to magnesian fire-resistance property, so it is once fashionable for a time to produce anti-fire door core board with magnesia oxychloride cement.But because state of the art is uneven, there is such or such problem in magnesia oxychloride cement anti-fire door core board, as steel-made fire-retardant door corrosion, fire door comes unglued, cavity appears in fire door, door panel intensity difference, fall slag and fall ash, the easily moisture absorption and make the problems such as fire-proof wooden door distortion in a particular application.Especially steel-made fire-retardant door corrosion problem is more outstanding, brings massive losses to unit in charge of construction and developer, causes great waste to society, and its negative effect is far longer than the economic benefit of this product.Therefore a lot of fire door manufacturers starts the fire door door panel product finding alternative magnesia oxychloride cement, as fire-resistant door core panel products such as water glass perlite platelet, rock cotton board.But there is the problem that production efficiency low, high-grade flower shape fire door cannot be produced in these door panel products in fire door production process.Production efficiency is lowly because water glass perlite can only produce platelet at present, can only be spliced by platelet in fire door production process, mat formation time of door panel generally at 10 minutes, even longer, and also the overall back-fire relief effect of gap to fire door of splicing has a significant impact.Rock cotton board is also like this.In addition, rock cotton board is not environmentfriendly products, produces rock wool ash harmful after this aging of product.Another is exactly because the problem of its material cannot meet the bonding of the high-grade fire door with flower shape.And magnesium oxysulfide concrete foaming doors central layer, because of its material behavior, cannot produce under temperature is lower than 15 DEG C of environment, be not suitable for the working condition of Northeast Area of China.
Summary of the invention
Object of the present invention aims to provide a kind of environmental protection, high-strength light, fireproof heat insulating, the anti-fire door core board manufacturing enterprise in northeast can being made when not increasing production cost, realizing the bulk chlorine oxygen magnesium of whole year production, magnesium oxysulfide composite cement foam anti-fire door core board and preparation method.
For this reason, the solution that the present invention takes is:
A kind of chlorine oxygen magnesium, magnesium oxysulfide composite cement foam anti-fire door core board, its raw material weight ratio is:
Magnesium oxide, magnesium chloride solution, Adlerika, desulfurated plaster, ultrafine carbon fiber, ultra-fine silicon ash, proportioning=100:60:66.6:2:0.8:0.5:0.5:0.2:0.5:0.5:0.3:0.5 between cationic polyacrylamide solution, industrial boric acid, ferrous sulfate, tertiary sodium phosphate, re-dispersible glue powder, whipping agent.
Described magnesium oxide is light calcined magnesia, its magnesium content >=85%, active >=65%;
Described magnesium chloride solution system adds 20 kilograms of Magnesium Chloride Anhydrouss dissolvings by 40 kg of water and forms;
Described Adlerika be under normal temperature by 50 kg of water add 16.6 kilograms magnesium sulfate dissolve form;
Described desulfurated plaster fineness is more than 180 orders;
Described ultrafine carbon fiber Fibre diameter is 3 ~ 10 μm;
The fineness of described ultra-fine silicon ash is more than 300 orders;
Described cationic polyacrylamide strength of solution is 0.1%, and namely 1 kg of water adds 1 gram of polyacrylamide amine solvent and forms;
Described industrial boric acid and tertiary sodium phosphate are powder;
Described copperas solution concentration is 20%;
Described re-dispersible glue powder is powder;
Described whipping agent be water, gelatine, caustic soda, galactomannan gum, animal proteinum, alkylphenol polyoxyethylene (being commonly called as OP-10), emulsifier os-15, wooden sodium sulfonate by weight 10:3:0.5:0.5:2:1:1.5:5 synthesis colloid whipping agent.
The concrete technology step of the preparation method of chlorine oxygen magnesium of the present invention, magnesium oxysulfide composite cement foam anti-fire door core board is:
1, by anhydrous chlorides of rase magnesium solution and Adlerika mixing and stirring, magnesium chloride, magnesium sulfate composite solution is formed; Whipping agent and water are dissolved in the ratio of 1:50 and forms expanding foam solution; Modulate solid powder and solution for standby according to the above ratio again.
2, magnesium chloride and magnesium sulfate composite solution are joined in stirrer, add cationic polyacrylamide solution and copperas solution again, stir after within 30 seconds, stopping stirring, add ultrafine carbon fiber, stirrer stirs 30 seconds again, then light calcined magnesia, desulfurated plaster, ultra-fine silicon ash, industrial boric acid, tertiary sodium phosphate and re-dispersible glue powder is added successively, stir 180 seconds, foaming machine is started while continuation is stirred, the expanding foam solution prepared is squeezed in stirrer, continue stirring 300 seconds, form the foaming slip stirred;
3, foaming slip is cast in the mould got ready, carries out ramming by hand, eliminate the bubble gap between slip, slip is evenly distributed, then strikes off with scraper plate, slurry thickness is measured, thickness exceedes gauge thickness, then feed supplement and striking off, until reach thickness requirement again.
4, become buttress to be pushed into maintenance kiln by building complete slip mould, the height of embankment degree that falls is no more than 1.5 meters, and under the low temperature environment of 5 ~ 15 DEG C, maintenance carried out the demoulding after 12 ~ 16 hours;
5, the maintenance of moisturizing temperature control is carried out to the door panel base after the demoulding, maintenance 48 ~ 72 hours under temperature 5 ~ 15 DEG C, relative humidity >=80% condition, its intensity is made to reach more than 95%, carry out control water curing 120 hours again, namely door panel is placed on natural air drying in the environment of humidity≤40%, the foamed fireproofing door panel of obtained water ratio≤10%.
Beneficial effect of the present invention is:
Because the present invention adopts magnesium chloride and magnesium sulfate as gelling material promotor, containing very small amount of free chloro ion in goods, and these free chloro ions are negative charges, substantially allow positively charged ion fix to absorption, can not the anti-halogen of the moisture absorption, action of rust is produced to metal products.The present invention adopts high-temperature anhydrous magnesium chloride solution to mix with low temperature Adlerika at low temperatures, improves the speed of cementitious material to solidify, makes it within 8 ~ 10 hours, can reach 70% of intensity at low temperatures, can the demoulding smoothly, realizes the production of industrialization.
The present invention adopts cationic polyacrylamide, utilizes the effect that positive and negative charge adsorbs mutually, is fixed by free chloro ion, not with other substance reaction, loses the hygroscopic properties of chlorion, although containing free chloro ion in goods, and also will not the anti-halogen of the moisture absorption.
The present invention adopts the exclusive superfine nature of ultra-fine silicon ash, joins in magnesium oxysulfide concrete slip, can significantly improve resistance to compression, anti-folding, impervious, anticorrosion, shock resistance and wear resisting property.
Anti-fire door core board environmental protection of the present invention, high-strength light, there is good resistance to elevated temperatures, make goods can be fire-resistant 180 minutes under high temperature 1200 DEG C of conditions, reach the requirement of goods fire prevention incendivity and security, belong to the green product of state ministry of public security fire department emphasis Popularization And Development.Meanwhile, the anti-fire door core board manufacturing enterprise in northeast can being made when not increasing production cost, realizing whole year production.
Embodiment
The raw material weight ratio of embodiment chlorine oxygen magnesium, magnesium oxysulfide composite cement foam anti-fire door core board is:
Magnesium oxide, magnesium chloride solution, Adlerika, desulfurated plaster, ultrafine carbon fiber, ultra-fine silicon ash, proportioning=100:60:66.6:2:0.8:0.5:0.5:0.2:0.5:0.5:0.3:0.5 between cationic polyacrylamide solution, industrial boric acid, ferrous sulfate, tertiary sodium phosphate, re-dispersible glue powder, efficient aerating powder.Wherein:
Magnesium oxide is magnesium content >=85%, the light calcined magnesia of active >=65%; Magnesium chloride solution system adds 20 kilograms of Magnesium Chloride Anhydrouss dissolvings by 40 kg of water and forms; Adlerika be under normal temperature by 50 kg of water add 16.6 kilograms magnesium sulfate dissolve form; Desulfurated plaster fineness is more than 180 orders; Ultrafine carbon fiber Fibre diameter is 3 ~ 10 μm; The fineness of ultra-fine silicon ash is more than 300 orders; Cationic polyacrylamide strength of solution is 0.1%, and namely 1 kg of water adds 1 gram of polyacrylamide amine solvent and forms; Industrial boric acid is powder; Copperas solution concentration is 20%; Described tertiary sodium phosphate is powder; Re-dispersible glue powder is powder; Whipping agent be water, gelatine, caustic soda, galactomannan gum, animal proteinum, alkylphenol polyoxyethylene (being commonly called as OP-10), emulsifier os-15, wooden sodium sulfonate by weight 10:3:0.5:0.5:2:1:1.5:5 synthesis colloid whipping agent.
Embodiment 1:
1, raw material prepares
Light calcined magnesia prepares, and selects the light calcined magnesia 100 kilograms of magnesium content >=85%, activity index >=65%.
Prepared by solution: anhydrous chlorides of rase magnesium solution adds 20 kilograms of Magnesium Chloride Anhydrouss dissolvings by 40 kg of water and forms, and Magnesium Chloride Anhydrous produces huge hydration heat in dissolution process, makes solution temperature rise to 80 DEG C very soon, does not need heating.The magnesium sulfate dissolving that Adlerika adds 16.6 kilograms by 50 kg of water at ambient temperature forms.Adlerika is poured in the anhydrous chlorides of rase magnesium solution of high temperature, after stirring, form magnesium chloride and Adlerika composite solution.
Cationic polyacrylamide solution prepares: will add 0.5 gram of Polyacrylamide Powder in 0.5 kg of water and stir.
Industrial boric acid prepares: take industrial boric acid 0.2 kilogram.
Expanding foam solution prepares: be dissolved into by the whipping agent of 0.5 kilogram in the water of 25 kilograms, form uniform expanding foam solution.
Desulfurated plaster 2 kilograms, ultrafine carbon fiber 0.8 kilogram, ultra-fine silicon ash 0.25 kilogram, industrial boric acid 0.5 kilogram, re-dispersible glue powder 0.3 kilogram are weighed.
Mould prepares, and mold cleaning is clean, and mould frame smearing release agent, in template, covering with plastic film is for subsequent use
2, prepare
Stir: the magnesium chloride mixed and magnesium sulfate composite solution are poured in stirrer, then add cationic polyacrylamide solution, start after stirrer stirred for 30 seconds and stop stirring.
Add ultrafine carbon fiber, then stir 30 seconds, ultrafine carbon fiber is evenly distributed in the middle of solution.
After adding light calcined magnesia, desulfurated plaster, ultra-fine silicon ash successively, then stir 180 seconds.
While continuation is stirred, start foaming machine and the expanding foam solution prepared all is squeezed in stirrer through foaming machine, continue stirring 300 seconds, foaming slip is stirred.
Build: be poured in previously prepd mould by the appropriate foaming slip stirred, hand ramming, then strikes off with scraper plate, then detect slurry thickness with survey instrument, if exceed gauge thickness, will again wipe unnecessary slip off, until reach specific thickness.
Maintenance: become buttress to be pushed into maintenance kiln by building complete slip mould, the height of embankment degree that falls must not more than 1.5 meters, and at >=5 DEG C, the lower maintenance of low temperature environment of≤15 DEG C carried out the demoulding after 12 ~ 16 hours;
The maintenance of moisturizing temperature control is carried out 48 hours to 72 hours to the door panel base after the demoulding, temperature >=5 DEG C, ≤ 15 DEG C, relative humidity >=80%, make its intensity reach more than 95%, then carry out control water curing 120 hours, namely door panel is placed on natural air drying in the environment of humidity≤40%, by water evaporates unnecessary in door panel base, the foamed fireproofing door panel of obtained water ratio≤10%.
Embodiment 2:
1, raw material prepares
Select the light calcined magnesia 200 kilograms of magnesium content >=85%, activity index >=65%.
Prepared by solution: magnesium chloride solution 80 kg of water adds 40 kilograms of Magnesium Chloride Anhydrouss dissolvings and forms, and Magnesium Chloride Anhydrous produces huge hydration heat in dissolution process, makes solution temperature rise to 80 DEG C very soon, does not need heating.The magnesium sulfate dissolving that Adlerika adds 33.2 kilograms by 100 kg of water at ambient temperature forms, then is poured into by Adlerika in the anhydrous chlorides of rase magnesium solution of high temperature, forms magnesium chloride and Adlerika composite solution after stirring.
1 gram of Polyacrylamide Powder is added in 1 kg of water and stirs, form cationic polyacrylamide solution.
The whipping agent of 1 kilogram is dissolved in the water of 50 kilograms, forms uniform expanding foam solution.
Desulfurated plaster 4 kilograms, ultrafine carbon fiber 1.6 kilograms, ultra-fine silicon ash 1 kilogram, industrial boric acid 1 kilogram, re-dispersible glue powder 0.6 kilogram are weighed.
Mould prepares, and mold cleaning is clean, and mould frame smearing release agent, in template, covering with plastic film is for subsequent use
2, prepare
Stir: the magnesium chloride mixed and magnesium sulfate composite solution are poured in stirrer, then add cationic polyacrylamide solution, start after stirrer stirred for 30 seconds and stop stirring.
Add ultrafine carbon fiber, then stir 30 seconds, ultrafine carbon fiber is evenly distributed in the middle of solution.
After adding light calcined magnesia, desulfurated plaster, ultra-fine silicon ash successively, industrial boric acid, re-dispersible glue powder stir 180 seconds again.
While continuation is stirred, start foaming machine and the expanding foam solution prepared all is squeezed in stirrer through foaming machine, continue stirring 300 seconds, foaming slip is stirred.
Build: be poured in previously prepd mould by the appropriate foaming slip stirred, hand ramming, then strikes off with scraper plate, then detect slurry thickness with survey instrument, if exceed gauge thickness, will again wipe unnecessary slip off, until reach specific thickness.
Maintenance: become buttress to be pushed into maintenance kiln by building complete slip mould, the height of embankment degree that falls must not more than 1.5 meters, and at >=5 DEG C, the lower maintenance of low temperature environment of≤15 DEG C carried out the demoulding after 12 ~ 16 hours;
The maintenance of moisturizing temperature control is carried out 48 hours to 72 hours to the door panel base after the demoulding, temperature >=5 DEG C, ≤ 15 DEG C, relative humidity >=80%, make its intensity reach more than 95%, then carry out control water curing 120 hours, namely door panel is placed on natural air drying in the environment of humidity≤40%, by water evaporates unnecessary in door panel base, the foamed fireproofing door panel of obtained water ratio≤10%.
Claims (2)
1. chlorine oxygen magnesium, a magnesium oxysulfide composite cement foam anti-fire door core board, is characterized in that, its raw material weight ratio is:
Magnesium oxide, magnesium chloride solution, Adlerika, desulfurated plaster, ultrafine carbon fiber, ultra-fine silicon ash, proportioning=100:60:66.6:2:0.8:0.5:0.5:0.2:0.5:0.5:0.5 between cationic polyacrylamide solution, industrial boric acid, ferrous sulfate, tertiary sodium phosphate, whipping agent;
Described magnesium oxide is light calcined magnesia, its magnesium content >=85%, active >=65%;
Described magnesium chloride solution system adds 20 kilograms of Magnesium Chloride Anhydrouss dissolvings by 40 kg of water and forms;
Described Adlerika be under normal temperature by 50 kg of water add 16.6 kilograms magnesium sulfate dissolve form;
Described desulfurated plaster fineness is more than 180 orders;
Described ultrafine carbon fiber Fibre diameter is 3 ~ 10 μm;
The fineness of described ultra-fine silicon ash is more than 300 orders;
Described cationic polyacrylamide strength of solution is 0.1%, and namely 1 kg of water adds 1 gram of polyacrylamide amine solvent and forms;
Described industrial boric acid is powder;
Described copperas solution concentration is 20%;
Described tertiary sodium phosphate is powder;
Described whipping agent be water, gelatine, caustic soda, galactomannan gum, animal proteinum, alkylphenol polyoxyethylene, emulsifier os-15, wooden sodium sulfonate by weight 10:3:0.5:0.5:2:1:1.5:5 synthesis colloid whipping agent.
2. application rights requires a preparation method for chlorine oxygen magnesium, magnesium oxysulfide composite cement foam anti-fire door core board described in 1, and it is characterized in that, its concrete technology step is:
(1), by magnesium chloride solution and Adlerika mixing and stirring, magnesium chloride and magnesium sulfate composite solution is formed; Whipping agent and water are dissolved in the ratio of 1:50 and forms expanding foam solution; Solid powder and solution for standby is modulated again in ratio described in claim 1;
(2), magnesium chloride and magnesium sulfate composite solution are joined in stirrer, add cationic polyacrylamide solution and copperas solution again, stir after within 30 seconds, stopping stirring, add ultrafine carbon fiber, stirrer stirs 30 seconds again, then light calcined magnesia, desulfurated plaster, ultra-fine silicon ash, industrial boric acid and tertiary sodium phosphate is added successively, stir 180 seconds, foaming machine is started while continuation is stirred, the expanding foam solution prepared is squeezed in stirrer, continue stirring 300 seconds, form the foaming slip stirred;
(3), foaming slip is cast in the mould got ready, carries out ramming by hand, eliminate the bubble gap between slip, slip is evenly distributed, then strikes off with scraper plate, slurry thickness is measured, thickness exceedes gauge thickness, then feed supplement and striking off, until reach thickness requirement again;
(4), by building complete slip mould become buttress to be pushed into maintenance kiln, the height of embankment degree that falls is no more than 1.5 meters, and under the low temperature environment of 5 ~ 15 DEG C, maintenance carried out the demoulding after 12 ~ 16 hours;
(5), the maintenance of moisturizing temperature control is carried out to the door panel base after the demoulding, maintenance 48 ~ 72 hours under temperature 5 ~ 15 DEG C, relative humidity >=80% condition, its intensity is made to reach more than 95%, carry out control water curing 120 hours again, namely door panel is placed on natural air drying in the environment of humidity≤40%, the foamed fireproofing door panel of obtained water ratio≤10%.
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| CN106082929B (en) * | 2016-06-14 | 2018-05-25 | 贺滔 | A kind of magnesium gelatinous material of homogeneous and preparation method thereof and product |
| CN108238777B (en) * | 2016-12-23 | 2020-10-13 | 中冶建筑研究总院有限公司 | Glass fiber reinforced cement and preparation method thereof |
| CN108238777A (en) * | 2016-12-23 | 2018-07-03 | 中冶建筑研究总院有限公司 | A kind of glass fiber reinforced cement and preparation method thereof |
| CN108569913A (en) * | 2017-05-02 | 2018-09-25 | 浙江星月安防科技有限公司 | A kind of anti-fire door core board and the preparation method and application thereof |
| CN107117930A (en) * | 2017-06-14 | 2017-09-01 | 合肥市旺友门窗有限公司 | A kind of high temperature resistance and high strength fire-resistant door core sheet material and preparation method thereof |
| CN107162633A (en) * | 2017-06-14 | 2017-09-15 | 合肥市旺友门窗有限公司 | A kind of anti-fire door core board and preparation method thereof |
| CN108858671A (en) * | 2017-06-15 | 2018-11-23 | 海宁永欣科技咨询有限公司 | The manufacture craft of door panel |
| CN107216113A (en) * | 2017-06-21 | 2017-09-29 | 合肥市旺友门窗有限公司 | A kind of anti-fire door core board and preparation method thereof |
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| CN109650837A (en) * | 2019-01-14 | 2019-04-19 | 中南林业科技大学 | Stalk/magnesium cementitious composite high-strength light anti-fire door core board and preparation method thereof |
| CN109650837B (en) * | 2019-01-14 | 2022-03-18 | 中南林业科技大学 | Straw/magnesium cement composite light high-strength fireproof door core plate and preparation method thereof |
| CN110922156A (en) * | 2019-12-04 | 2020-03-27 | 王晓明 | Preparation method of environment-friendly, economical, high-temperature-resistant and high-strength fireproof door core board |
| CN115959875A (en) * | 2022-11-10 | 2023-04-14 | 四川零零昊科技有限公司 | Light filler and preparation method and application thereof |
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