CN103089126B - Green fire door core and manufacturing method of same and fire door - Google Patents

Green fire door core and manufacturing method of same and fire door Download PDF

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Publication number
CN103089126B
CN103089126B CN201310005990.3A CN201310005990A CN103089126B CN 103089126 B CN103089126 B CN 103089126B CN 201310005990 A CN201310005990 A CN 201310005990A CN 103089126 B CN103089126 B CN 103089126B
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door core
door
fire
green
fire prevention
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CN201310005990.3A
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Chinese (zh)
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CN103089126A (en
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邝钜炽
伍容秀
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邝钜炽
梁志昌
佛山市科成先进防火材料科技有限公司
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Publication of CN103089126A publication Critical patent/CN103089126A/en
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Abstract

The invention discloses a green fire door core, a manufacturing method of the green fire door core and a fire door. By quality percent, the preparation materials of the green fire door core comprise magnesium oxide 15-40%, magnesium salt 15-35%, vesicant 0.5-5%, glass fiber 1.5-5%, assistant 2-10%, perlite composition 16-30%, and water 20-45%. Door core slurry can be directly filled into a door core frame, gaps and filling dead angles do not exist in the door core frame, the whole function of fire resistance and heat insulation is improved, and the door core is in accordance with A1 level fire protection standard of GB8624-2006. The door core can be relatively strong bound to a wood door panel and steel door pane, and glue is not needed or just a little. Bond strength can be kept still in the oxidation burning atmosphere of 750-1000 DEG c. Due to the fact that chloride does not overflow out of the surface of the door core, the capacity of rust resistance of the steel door panel is greatly improved. The door core has the advantages of preventing a wood door from mildewing, can not release hydrochloric acid (HCL) toxic cloud in the burning atmosphere and is green and environment-friendly.

Description

A kind of green fire prevention door core and manufacture method thereof and labeled door
Technical field
The present invention relates to fire-proof light (foaming) Material Field, particularly relate to and a kind ofly exempt from by PLASTIC LAMINATED and significantly save the High-performance green fire-resistant door core of glue and manufacture method thereof and labeled door.
Background technology
In prior art, door core as labeled door fireproof filling material is obtained by four kinds of materials, one is aluminium silicate wool plate, need high temperature sintering system cotton in its manufacturing process, there is highly energy-consuming and the defect of contaminated environment, particularly its sheet material is shaping by the organic adhesive added, not only non-watertight, its bonding agent is met fire and is produced a large amount of harmful vapors, is prohibited from using.The second is pearlite slab, although insulated fire better performances, intensity is very poor, have data show its transport and installation process in breakage rate up to more than 30%, not only increase use cost, its frangible defect also affects the fire prevention of this sheet material, insulation and soundproof effect.Another kind is vermiculate fireproof plates, and this sheet material not only exists the frangible defect of similar pearlite slab, also there is non-light weight, complex process, price higher than the practical problem of aforementioned two kinds of sheet materials.4th kind is now general magnesite (perlite) foamed fireproofing door core material (also known as inorganic foamed door core material), although comparatively first three plants all light weights, easy to use, but it is poor to there is fire insulation performance equally, the drawback of fire-resistant intensity difference (more than 455 DEG C are easily decomposed), cannot reach the A1 level fire-protection standard requirement of GB8624-2006 at all.
And, when fire-proof wooden door and part fire resistance steel door manufacture, due to existing foaming doors core mechanical strength and fire-resistant insufficient strength, need PLASTIC LAMINATED be installed additional.Meanwhile, door core is connected with using more organic gel (being commonly called as glue) between door face board, adds cost.But in prior art, best organic gel is also entirely ineffective more than 350 DEG C.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the object of the present invention is to provide and a kind ofly exempt from by PLASTIC LAMINATED and significantly save the High-performance green fire-resistant door core of glue and manufacture method thereof and labeled door, be intended to solve the problems such as existing fire-resistant door core fire insulation performance difference and bad mechanical strength.
Technical scheme of the present invention is as follows:
A kind of green fire prevention door core, wherein, the raw materials (being called for short green fire prevention door core raw material) of described green fire prevention door core, by mass percentage, comprises following component:
Magnesia 15-45%;
Magnesium salts 15-35%;
Blowing agent 0.5-5%;
Glass fiber 1.5-5%;
Auxiliary agent 2-10%;
Perlite combination 16-30%;
Water 20-45%.
Described green fire prevention door core raw material, wherein, the magnesium salts in described green fire prevention door core raw material is that magnesium chloride is or/and magnesium sulfate; Wherein, when described magnesium salts be magnesium chloride and magnesium sulfate composition time, the mass ratio of described magnesium chloride and magnesium sulfate is 4-10:1.
Described green fire prevention door core raw material, wherein, the diameter of the glass fiber in described green fire prevention door core raw material is 1-8mm.
Described green fire prevention door core raw material, wherein, the auxiliary agent in described green fire prevention door core raw material is silicate of soda, cataloid, polysulfide, alkali metal or alkaline earth metal carbonate, iron, the combination of one or several in aluminium salt; When described auxiliary agent be both or more material coexist time, material is by quality equal distribution ratio.
Described green fire prevention door core raw material, wherein, the perlite in described green fire prevention door core raw material is combined as the combination by 5:1 mass ratio of perlite and filler; Described filler comprises one or both the combination in calcined kaolin, swell soil, French chalk, quartz powder; When described filler is made up of bi-material, material in mass ratio 1-3:1 coordinates.
Described green fire prevention door core raw material, wherein, by sulfonic acid compound, organic or inorganic oxide forms the blowing agent in described green fire prevention door core raw material.
A preparation method for green fire prevention door core as above, wherein, specifically order is carried out according to the following steps:
Magnesium salts is put into mixer be dissolved in water;
Add magnesia, glass fiber and auxiliary agent, fully stir lower reaction 8-15 minute;
Blowing agent is added mixer, uniform stirring foaming 5-12 minute;
Mixer is put in perlite combination be stirred to slurry volume and stablize, obtain paste slurry;
Paste filled therewith in fire-resistant door core frame;
Interior temperature 20-40 DEG C, tentatively sclerosis in natural curing 8-12 hour under the condition of relative air humidity 40-80%;
Interior temperature 20-40 DEG C, continue maintenance 5 ~ 10 days under the condition of relative air humidity 40-80%.
A kind of labeled door, wherein, described labeled door comprises a core frame and green fire prevention door core as above, and described green fire prevention Men Xin is filled in described door core frame.
Described labeled door, wherein, described door core frame is wooden or steel door core frame.
Beneficial effect: green fire prevention door core provided by the present invention, door core slurry directly can fill a core frame, makes tight and filling dead angle in a core frame, improves refractory heat-insulating allomeric function, meet the A1 level fire-protection standard of GB8624-2006; All there is stronger adhesive power with wooden, steel door panel, also can bond with door face board and door core frame firmly without the need to glue or with a small amount of glue, and still can keep suitable bond strength in 750-1000 DEG C of oxidizing fire atmosphere.Compared with prior art, not only eliminate the PLASTIC LAMINATED that existing wooden and part fire resistance steel door foaming doors core will install additional, also can significantly save glue 50% and more than, greatly reduce cost of production; And overcome existing magnesite fire-proof door wicking surface and easily to dissociate the drawback of chlorion, substantially increase the rust-proofing ability of steel door panel; Compared with prior art, also there is the advantage suppressing wooden door to go mouldy; HCl poison mist can not be discharged, environmental protection in combustion atmosphere.
Detailed description of the invention
The invention provides a kind of green fire prevention door core and manufacture method thereof and labeled door, for making object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention discloses a kind of exempting from PLASTIC LAMINATED and the High-performance green fire-resistant door core that significantly can reduce organic gel use, the raw materials (referred to as green fire prevention door core) of described green fire prevention door core, by mass percentage (w%), comprises following component:
Magnesia 15-45%;
Magnesium salts 15-35%;
Blowing agent 0.5-5%;
Glass fiber 1.5-5%;
Auxiliary agent 2-10%;
Perlite combination 16-30%;
Water 20-45%.
Wherein, the magnesium salts in described green fire prevention door core raw material is that magnesium chloride is or/and magnesium sulfate; When described magnesium salts be magnesium chloride and magnesium sulfate time, the mass ratio of described magnesium chloride and magnesium sulfate is 4-10:1.
The diameter of the glass fiber in described green fire prevention door core raw material is 1-8mm.
Auxiliary agent in described green fire prevention door core raw material is silicate of soda, cataloid, polysulfide, alkali metal or alkaline earth metal carbonate, iron, the combination of one or several in aluminium salt; When both or more material coexist time, material is by quality equal distribution ratio.Wherein, described polysulfide can be as the one in two-tertiary dodecyl pentasulfide, two tertiary nonylpolysulfide etc.Described alkali metal or alkali-metal carbonate can be as sodium carbonate, potash, calcium carbonate, strontium carbonate, magnesium carbonate etc.Described aluminium salt can be aluminium chloride, aluminum sulfate, aluminum nitrate, alumina silicate, aluminium sulfide etc.Perlite in described green fire prevention door core raw material is combined as the combination by 5:1 mass ratio of perlite and filler.Described filler comprises one or both the combination in calcined kaolin, swell soil, French chalk, quartz powder; When being made up of bi-material in filler, 1-3:1 coordinates in mass ratio.By sulfonic acid compound, organic or inorganic oxide forms blowing agent in described green fire prevention door core raw material.
Also provide the preparation method of described green fire prevention door core in the present invention, specifically order is carried out according to the following steps:
Magnesium salts is put into mixer be dissolved in water;
Add magnesia, glass fiber and auxiliary agent, fully stir lower normal-temperature reaction 8-15 minute;
Blowing agent is added mixer, and within 5-12 minute, (depending on required unit weight, door-plate desired strength is high, and unit weight is high, and foamed time is short in uniform stirring foaming; Door-plate desired strength is lower, and unit weight is lower, then foamed time is long);
Mixer stirring is put in perlite combination within 2-8 minute, stablize to slurry volume, obtain paste slurry;
Paste slurry is put in pre-prepd fire-resistant door core frame;
Interior temperature 20-40 DEG C, tentatively sclerosis (in this time, fire-resistant door core should not be moved) in natural curing 8-12 hour under the condition of relative air humidity 40-80%;
Interior temperature 20-40 DEG C, continue maintenance 5 ~ 10 days under the condition of relative air humidity 40-80%, fire-resistant door core can use.
Also provide a kind of labeled door in the present invention, described labeled door comprises a core frame and described green fire prevention door core, and described green fire prevention Men Xin is filled in described door core frame.Described door core frame is wooden or steel doorframe.The unit weight of described fire-resistant door core can be 330 ~ 480 kg/m 3.
Labeled door of the present invention, fire-resistant door core material and manufacture method thereof have following unique advantage:
(1) fire-resistant resistance to burning, fire integrity can be good.Overcome existing magnesite (perlite) foaming doors core material (also known as inorganic foamed door core material) chlorine oxygen magnesium crystalline solid non-refractory, more than 455 DEG C are held labile critical defect (in 750-1000 DEG C of oxidizing fire atmosphere, 0.5 hours burns and collapses), fire-resistant door core can in 750-1000 DEG C of oxidizing fire atmosphere, and the sustained combustion time, still overall structure was complete more than 1.5 hours.
(2) fire and heat endurance, refractory heat-insulating performance is good.Labeled door in the regular fire inspection of official, can continue to carry on the back each electric thermo-couple temperature in fiery face in 1.5 hours and is stable between 60-85 DEG C, present very outstanding refractory heat-insulating performance.
(3) take the meticulous foaming new paragon of normal pressure original position, the resistance to fire intensity of door core material is high.Instead of the mode of the free rough foaming of existing foaming agent pressurization in the mode of the meticulous foaming of normal pressure original position, each bubble of sending out be original position and send and be only needle point size, the growth of young tender oxygen magnesium crystalline solid can not be destroyed; And the bubble that existing foam pattern is formed is much larger than needle point, and constantly free between chlorine oxygen magnesium crystalline solid skeleton at additional direct draught, destroy the growth skeleton of young tender chlorine oxygen magnesium crystalline solid.Thus fire-resistant door core material intensity of the present invention or heat resistance are all more than existing far better.
(4) the door core slurries of manufacture of the present invention and wooden, steel door panel all have stronger adhesive power, can significantly save glue 50% and more than; And in 750-1000 DEG C of oxidizing fire atmosphere, still can keep certain bond strength (and best glue is higher than 350 DEG C of also total loss of adhesion power).
(5) exempt PLASTIC LAMINATED, reduce costs.Eliminate the PLASTIC LAMINATED that existing wooden and part fire resistance steel door foaming doors core will install additional, greatly reduce cost of production (worthwhile with saving glue, to reduce costs and can reach more than 35%).
(6) paste door core slurry directly can fill a core frame, has stopped filling dead angle, improves refractory heat-insulating allomeric function.Thus the A1 level fire-protection standard of GB8624-2006 can be reached easily.
(7) existing magnesite foaming doors wicking surface unavoidably dissociates chlorion, thus contact steel plate causes rust corrosion, special plum rains or wet weather, and phenomenon of getting rusty is obvious especially.Fire-resistant door core of the present invention overcomes this defect, and can not dissociate chlorion on surface, thus can not cause steel door surface oxidisation.
(8) owing to establishing the mechanism of anti-bacteria breeding, compared with prior art, there is the advantage suppressing wooden door to go mouldy.
(9) intensity is large.Overcome the loose tendency that existing foaming doors core crab is needle-like crystal structure, in skeleton, form the interspersed crystallization of wedge-type intersection, greatly strengthen the intensity of foaming doors core crab.And reasonable disposition rigid backbone filler and flexible reinforced composition, further enhancing its hardness and fracture resistance (the clear and melodious sound knocking imitative metal after sclerosis is exactly clear proof).
(10) shaping rate of hardening more faster than existing foaming doors core (10 hours i.e. preliminary sclerosis), and hardened surface is compact film structure (the general foaming doors wicking surface in existing market is in loose foaming surface layer structure), thus substantially increase the moistureproof and waterproof performance of a core.
(11) the nontoxic mist that burns pollutes.Existing magnesite foaming doors core burning unavoidably decomposites some hydrogen chloride be harmful to people and animals (HCl) gases, runs into moisture laden air and easily forms corrosive hydrochloric acid acid mist, contaminated environment; And the possibility that hydrogen chloride (HCl) gas is released in burning stopped by fire-resistant door core material of the present invention, it is a kind of environmental protection new material.
The invention will be further described by the following examples.
Embodiment 1:
Fire-resistant door core manufactures according to the following steps:
1, magnesium salts (magnesium chloride and magnesium sulfate, mass ratio is 5:1) 25kg is put into mixer add water 30kg dissolve;
2, magnesia (MgO activity composition 65% ± 2 is added, fineness 200 order, purity 85%) 40kg, glass fiber (diameter is 1.5mm) 5kg and auxiliary agent (silicate of soda, cataloid mass ratio are 1:1) 4.5kg, fully stir lower normal-temperature reaction 10 minutes;
3, blowing agent 1kg is added mixer, uniform stirring foams 10 minutes;
4, perlite is combined (, than being 5:1, wherein filler is calcined kaolin and the swell soil of mass ratio 1:1 for perlite and packing quality) 23kg to put into mixer stir about and stabilize to terminal to slurry volume in 8 minutes;
5, the paste slurry be stirred is put in pre-prepd fire resistance steel door core frame;
6, natural curing tentatively sclerosis (in this time, labeled door should not be moved) in 8 hours under the condition of interior temperature 22 DEG C, relative air humidity 55%;
7, under the condition of interior temperature 25 DEG C, relative air humidity 60%, continue maintenance 5 days, fire-resistant door core can use.
Fire-resistant door core unit weight 375 kg/m of embodiment 1 3, compressive strength>=1.2MPa, fire prevention Al grade standard, coefficient of thermal conductivity 0.6 W/m 2k, dry contraction≤0.38 mm/m.
Embodiment 2:
Fire-resistant door core manufactures according to the following steps:
1, magnesium salts (magnesium chloride and magnesium sulfate, mass ratio is 4:1) 33kg is put into mixer add water 40kg dissolve;
2, magnesia (MgO activity composition 65% ± 2 is added, fineness 200 order, purity 85%) 45kg, glass fiber (diameter is 3mm) 5kg and auxiliary agent (aluminium chloride, calcium carbonate, two tertiary nonylpolysulfide mass ratioes are 1:1:1) 4kg, fully stir lower normal-temperature reaction 12 minutes;
3, blowing agent 1.5 kg is added mixer, uniform stirring foams 8 minutes;
4, perlite is combined (, than being 5:1, wherein filler is French chalk for perlite and packing quality) 26.5kg to put into mixer stirring and stabilize to terminal to slurry volume in 5-8 minute;
5, the paste slurry be stirred is put in pre-prepd fire-proof wooden door core frame;
6, tentatively sclerosis (in this time, labeled door should not be moved) in natural curing 8-12 hour under the condition of interior temperature 30 DEG C, relative air humidity 75%;
7, under the condition of interior temperature 32 DEG C, relative air humidity 68%, continue maintenance 7 days, fire-resistant door core can use.
Fire-resistant door core unit weight 380 kg/m of embodiment 2 3, compressive strength>=1.3MPa, fire prevention Al grade standard, coefficient of thermal conductivity 0.6 W/m 2k, dry contraction≤0.36 mm/m.
The central layer slurries of embodiment 1 ~ 2 gained and wooden, steel panel all have stronger adhesive power, compared with existing labeled door, can significantly save glue 50% and more than.And in 750-1000 DEG C of oxidizing fire atmosphere, still can keep suitable bond strength.The labeled door of embodiment 1 ~ 2 gained is produced easy, paste door core filled therewith door core frame, and in door core frame, tight and filling dead angle, improve refractory heat-insulating allomeric function, meet the A1 level fire-protection standard of GB8624-2006.
The labeled door of embodiment 1 ~ 2 gained is placed in 750-1000 DEG C of oxidizing fire atmosphere, the sustained combustion time was more than 1.5 hours, the overall structure of two labeled doors is still complete, and unexposed surface temperature is still stable at 50-70 DEG C [under equal conditions, namely existing general magnesite (perlite) foaming doors core 0.5 hours that burns collapses completely, and unexposed surface temperature also soars to more than 140-160 DEG C for a long time].Meanwhile, in combustion atmosphere, two labeled doors all do not discharge HCl poison mist, environmental protection.
Embodiment 3:
Fire-resistant door core manufactures according to the following steps:
1, magnesium salts (magnesium sulfate) 30kg is put into mixer add water 23kg dissolve;
2, magnesia (MgO activity composition 65% ± 2 is added, fineness 200 order, purity 85%) 22kg, glass fiber (diameter is 5mm) 1kg and auxiliary agent (silicate of soda, the mass ratio of aluminium chloride and iron is 1:1:1) 5 kg, fully stir lower normal-temperature reaction 8-15 minute;
3, blowing agent 1kg is added mixer, uniform stirring foams 10 minutes;
4, perlite is combined (, than being 5:1, filler is French chalk and the quartz powder of mass ratio 3:1 for perlite and packing quality) 18kg to put into mixer stirring and stabilize to terminal to slurry volume in 5-8 minute;
5, the paste slurry be stirred is put in pre-prepd fire resistance steel door core frame;
6, natural curing tentatively sclerosis (in this time, fire-resistant door core should not be moved) in 12 hours under the condition of interior temperature 23 DEG C, relative air humidity 70%;
7, under the condition of interior temperature 24 DEG C, relative air humidity 60%, continue maintenance 7 days, fire-resistant door core can use.
Fire-resistant door core unit weight 435 kg/m of embodiment 3 3, compressive strength>=1.0MPa, fire prevention Al grade standard, coefficient of thermal conductivity 0.6 W/m 2k, dry contraction≤0.38 mm/m.
Embodiment 4:
Fire-resistant door core manufactures according to the following steps:
1, magnesium salts (magnesium chloride) 25kg is put into mixer add water 23.5kg dissolve;
2, magnesia (MgO activity composition 65% ± 2 is added, fineness 200 order, purity 85%) 23kg, glass fiber (diameter is 3-6mm) 2kg and auxiliary agent (sodium carbonate, cataloid, aluminum sulfate mass ratio is 1:1:1) 8 kg, fully stir lower normal-temperature reaction 8-15 minute;
3, blowing agent 2.5 kg is added mixer, uniform stirring foams 8 minutes;
4, perlite is combined (, than being 5:1, filler is swell soil for perlite and packing quality) 16kg to put into mixer stirring and stabilize to terminal to slurry volume in 5-8 minute;
5, the paste slurry be stirred is put in pre-prepd fire-proof wooden door core frame;
6, natural curing tentatively sclerosis (in this time, fire-resistant door core should not be moved) in 12 hours under the condition of interior temperature 25 DEG C, relative air humidity 50%;
7, under the condition of interior temperature 27 DEG C, relative air humidity 45%, continue maintenance 10 days, fire-resistant door core can use.
Fire-resistant door core unit weight 380 kg/m of embodiment 4 3, compressive strength>=1.3MPa, fire prevention Al grade standard, coefficient of thermal conductivity 0.6 W/m 2k, dry contraction≤0.36 mm/m.
The central layer slurries of embodiment 3 ~ 4 gained and wooden, steel panel all have stronger adhesive power, compared with existing labeled door, can significantly save glue 50% and more than.And still certain bond strength can be kept in 750-1000 DEG C of oxidizing fire atmosphere.The labeled door of embodiment 3 ~ 4 gained is produced easy, paste door core filled therewith door core, and in door core frame, tight and filling dead angle, improve refractory heat-insulating allomeric function, meet the A1 level fire-protection standard of GB8624-2006.
The labeled door of embodiment 3 ~ 4 gained is placed in 750-1000 DEG C of oxidizing fire atmosphere, the sustained combustion time was more than 1.5 hours, the overall structure of two labeled doors is still complete, and unexposed surface temperature is still stable at 50-70 DEG C [under equal conditions, namely existing general magnesite (perlite) foaming doors core 0.5 hours that burns collapses completely, and unexposed surface temperature also soars to more than 140-160 DEG C for a long time].Meanwhile, in combustion atmosphere, two labeled doors all do not discharge HCl poison mist, environmental protection.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.

Claims (4)

1. a green fire prevention door core, is characterized in that, described green fire prevention door core raw material by mass percentage, comprises following component:
Magnesia 15-45%;
Magnesium salts 15-35%;
Blowing agent 0.5-5%;
Glass fiber 2-5%;
Auxiliary agent 1.5-10%;
Perlite combination 16-30%;
Water 20-45%;
The diameter of the glass fiber in described green fire prevention door core raw material is 1-8mm;
Magnesium salts in described green fire prevention door core raw material is that magnesium chloride is or/and magnesium sulfate; Wherein, when described magnesium salts be magnesium chloride and magnesium sulfate composition time, the mass ratio of described magnesium chloride and magnesium sulfate is 4-10:1;
Auxiliary agent in described green fire prevention door core raw material is silicate of soda, cataloid, polysulfide, alkali carbonate or alkaline earth metal carbonate, iron, the combination of one or several in aluminium salt; When described auxiliary agent be both or more material coexist time, material is by quality equal distribution ratio;
Perlite in described green fire prevention door core raw material is combined as the combination by 5:1 mass ratio of perlite and filler; Described filler comprises one or both the combination in calcined kaolin, swell soil, French chalk, quartz powder; When described filler is made up of bi-material, material in mass ratio 1-3:1 coordinates;
By sulfonic acid compound, organic or inorganic oxide forms blowing agent in described green fire prevention door core raw material.
2. a preparation method for green fire prevention door core as claimed in claim 1, is characterized in that, specifically order is carried out according to the following steps:
Magnesium salts is put into mixer be dissolved in water;
Add magnesia, glass fiber and auxiliary agent, fully stir lower reaction 8-15 minute;
Blowing agent is added mixer, uniform stirring foaming 5-12 minute;
Mixer is put in perlite combination be stirred to slurry volume and stablize, obtain paste slurry;
Paste filled therewith in fire-resistant door core frame;
Interior temperature 20-40 DEG C, tentatively sclerosis in natural curing 8-12 hour under the condition of relative air humidity 40-80%;
Interior temperature 20-40 DEG C, continue maintenance 5 ~ 10 days under the condition of relative air humidity 40-80%.
3. a labeled door, is characterized in that, described labeled door comprises a core frame and green fire prevention door core as claimed in claim 1, and described green fire prevention Men Xin is filled in described door core frame.
4. labeled door according to claim 3, is characterized in that, described door core frame is wooden or steel door core frame.
CN201310005990.3A 2013-01-08 2013-01-08 Green fire door core and manufacturing method of same and fire door CN103089126B (en)

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CN102584115A (en) * 2011-12-20 2012-07-18 汪洋 Fireproof material, preparation method thereof and fireproof door
CN102786309A (en) * 2012-04-24 2012-11-21 上海唐盾材料科技有限公司 Fire-resistance type magnesium oxide board

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CN101781113A (en) * 2009-12-31 2010-07-21 李同生 Inorganic fire-resistant foam filling material for door core board
CN101941827A (en) * 2010-08-20 2011-01-12 周兴和 Material for inorganic heat-insulating fireproof doors and production method thereof
CN102584115A (en) * 2011-12-20 2012-07-18 汪洋 Fireproof material, preparation method thereof and fireproof door
CN102786309A (en) * 2012-04-24 2012-11-21 上海唐盾材料科技有限公司 Fire-resistance type magnesium oxide board

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