CN111039653A - Preparation method of fireproof door core plate - Google Patents
Preparation method of fireproof door core plate Download PDFInfo
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- CN111039653A CN111039653A CN201911287690.2A CN201911287690A CN111039653A CN 111039653 A CN111039653 A CN 111039653A CN 201911287690 A CN201911287690 A CN 201911287690A CN 111039653 A CN111039653 A CN 111039653A
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- foaming
- core material
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/30—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing magnesium cements or similar cements
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
- E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
- E06B5/161—Profile members therefor
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/26—Corrosion of reinforcement resistance
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention relates to the technical field of building materials, in particular to a preparation method of a fireproof door core material, which comprises the following steps: dissolving the magnesium sulfate crystal with water to obtain a magnesium sulfate solution with the concentration of 26-30 mu M; selecting the following raw materials in parts by weight: 100-160 parts of magnesium oxide, 150-200 parts of magnesium sulfate solution, 1.5-3 parts of modifier, 1-2 parts of reinforcing agent and 1-2 parts of polypropylene fiber; uniformly stirring the selected raw materials to obtain raw slurry; selecting 1-2 parts of foaming agent, and mixing the raw materials in a proportion of 1: adding water in a proportion of 40 for foaming treatment, and adding the foamed material into the raw pulp to obtain door core plate pulp; the obtained door core plate slurry is poured into a forming die, and the fireproof door core material is obtained after curing, and the fireproof door core material has the advantages of simple production process, convenience in production and processing, good fireproof performance, energy conservation, environmental friendliness and the like.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a preparation method of a fireproof door core material.
Background
The fireproof door core board is mainly used for steel heat-insulating fireproof doors, wooden fireproof doors, pipeline well doors and fireproof entrance doors; the fireproof door core plate mainly comprises the following components: an aluminum silicate cotton door core board, an expanded perlite door core board and a magnesite foam door core board. Wherein, the aluminum silicate cotton door core board is forbidden to use at present due to the fact that the smoke toxicity index of the aluminum silicate cotton door core board can not reach the national standard; the expanded perlite door core board is easy to loosen due to the poor strength of perlite and easy to degum when being glued with a steel plate, has high transportation cost and is eliminated by the market at present; in 2006, most of the factories use magnesium chloride fireproof door core plates. The magnesium chloride, halogen sheets, high-purity magnesium and magnesium oxide are mainly used for production, namely the magnesite foam door core board, and the environment-friendly material is formed by mechanical line production pressing processing. It is non-inflammable, non-toxic, environment friendly and fireproof. But the defects are that the magnesium chloride and halogen slice materials contain a large amount of chloride ions, and the chloride ions are easy to absorb moisture and return halogen under a humid environment, so that a steel plate is corroded, and the service life of the fireproof door is greatly shortened.
Disclosure of Invention
In view of the above, the present invention is directed to a method for manufacturing a fire door core material, which can manufacture a fire door core material without chlorine element to improve the service life thereof.
In order to achieve the purpose, the first technical scheme adopted by the invention is as follows:
a preparation method of the fireproof door core material comprises the following steps:
step one, dissolving magnesium sulfate crystals into water to obtain a magnesium sulfate solution with the concentration of 26-30 mu M; selecting the following raw materials in parts by weight: 100-160 parts of magnesium oxide, 150-200 parts of magnesium sulfate solution, 1.5-3 parts of modifier, 1-2 parts of reinforcing agent and 1-2 parts of polypropylene fiber; uniformly stirring the selected raw materials to obtain raw slurry;
selecting 1-2 parts of foaming agent, and mixing the raw materials in a ratio of 1: adding water in a proportion of 40 for foaming treatment, and adding the foamed raw pulp into the raw pulp obtained in the step one to obtain door core plate pulp;
and step three, pouring the door core plate slurry obtained in the step two into a forming mold, and curing to obtain the fireproof door core material.
Further, the first step further comprises:
pouring the selected raw materials into a stirrer, and uniformly stirring to obtain raw slurry;
the second step further comprises: and (4) performing foaming treatment through a foaming machine, and foaming the mixture into a stirrer to obtain the door core plate slurry.
Further, the foaming time of the foaming machine is 90-120 seconds.
Further, the first step specifically comprises:
firstly, 150 parts of magnesium sulfate solution, 1.5-3 parts of modifier, 1-2 parts of reinforcing agent and 1-2 parts of polypropylene fiber are poured into a stirrer to be uniformly stirred; then adding 100 portions of magnesium oxide and 160 portions of magnesium oxide, and continuously and uniformly stirring to obtain the original slurry.
Further, the curing time in the third step is 8-24 hours.
Further, the step three is followed by a step four:
and (5) airing the fireproof door core material obtained in the step three to obtain a finished product, wherein the airing time is 7-14 days.
Further, the foaming agent is a biological protein foaming agent.
Further, the modifier is one or a mixture of oxalic acid, citric acid and trisodium phosphate.
Further, the reinforcing agent is silicon dioxide.
The beneficial effects of the above technical scheme are:
the preparation method of the fireproof door core material provided by the invention has the advantages of simple production process, convenience in production and processing, light volume weight, high mechanical strength, good fireproof performance, strong weather resistance, low production cost, no three-waste discharge, high resource utilization rate, energy conservation, environmental friendliness and the like, wherein the fireproof door core material is reasonable in formula, does not absorb moisture and return halogen, does not generate corrosion on metal products, and can prolong the service life of the fireproof door core material without chlorine.
Drawings
Figure 1 is a flow chart showing the steps of the method of making the fire door core of the present invention.
Detailed Description
The invention is further described below with reference to the following figures and specific examples:
the first preferred embodiment:
a preparation method of the fireproof door core material comprises the following steps:
step one, dissolving magnesium sulfate crystals into water to obtain a magnesium sulfate solution with the concentration of 26-30 mu M; selecting the following raw materials in parts by weight: 100 parts of magnesium oxide, 150 parts of magnesium sulfate solution, 1.5 parts of modifier, 1 part of reinforcing agent and 1 part of polypropylene fiber; pouring the selected raw materials into a stirrer, and uniformly stirring to obtain raw slurry; wherein the foaming agent is a bioprotein foaming agent. The modifier is one or a mixture of oxalic acid, citric acid and trisodium phosphate. The reinforcing agent is silicon dioxide.
The first step is specifically as follows:
firstly, 150 parts of magnesium sulfate solution, 1.5 parts of modifier, 1 part of reinforcing agent and 1 part of polypropylene fiber are poured into a stirrer to be uniformly stirred; then 100 parts of magnesium oxide is added and is continuously and evenly stirred to obtain the original slurry.
Step two, selecting 1 part of foaming agent, and mixing the raw materials in a proportion of 1: adding water in a proportion of 40, carrying out foaming treatment through a foaming machine, foaming for 90 seconds, and adding into the raw pulp of the stirring machine to obtain door core plate pulp;
and step three, pouring the door core plate slurry obtained in the step two into a forming mold, and curing for 8 hours to obtain the fireproof door core material.
And step four, airing the fireproof door core material obtained in the step three to obtain a finished product, wherein the airing time is 7 days.
The second preferred embodiment:
a preparation method of the fireproof door core material comprises the following steps:
step one, dissolving magnesium sulfate crystals into water to obtain a magnesium sulfate solution with the concentration of 26-30 mu M; selecting the following raw materials in parts by weight: 150 parts of magnesium oxide, 180 parts of magnesium sulfate solution, 1.8 parts of modifier, 1.5 parts of reinforcing agent and 1.5 parts of polypropylene fiber; pouring the selected raw materials into a stirrer, and uniformly stirring to obtain raw slurry; wherein the foaming agent is a bioprotein foaming agent. The modifier is one or a mixture of oxalic acid, citric acid and trisodium phosphate. The reinforcing agent is silicon dioxide.
The first step is specifically as follows:
firstly, pouring 180 parts of magnesium sulfate solution, 1.8 parts of modifier, 1.5 parts of reinforcing agent and 1.5 parts of polypropylene fiber into a stirrer for uniform stirring; and adding 150 parts of magnesium oxide, and continuously and uniformly stirring to obtain the raw slurry.
Selecting 1.5 parts of foaming agent, and mixing the raw materials in a ratio of 1: adding water in a proportion of 40, carrying out foaming treatment through a foaming machine, adding the mixture into the raw pulp of the stirring machine after foaming for 100 seconds to obtain door core plate pulp;
and step three, pouring the door core plate slurry obtained in the step two into a forming mold, and curing for 18 hours to obtain the fireproof door core material.
And step four, airing the fireproof door core material obtained in the step three to obtain a finished product, wherein the airing time is 10 days.
The third preferred embodiment:
a preparation method of the fireproof door core material comprises the following steps:
step one, dissolving magnesium sulfate crystals into water to obtain a magnesium sulfate solution with the concentration of 26-30 mu M; selecting the following raw materials in parts by weight: 160 parts of magnesium oxide, 200 parts of magnesium sulfate solution, 3 parts of modifier, 2 parts of reinforcing agent and 2 parts of polypropylene fiber; pouring the selected raw materials into a stirrer, and uniformly stirring to obtain raw slurry; wherein the foaming agent is a bioprotein foaming agent. The modifier is one or a mixture of oxalic acid, citric acid and trisodium phosphate. The reinforcing agent is silicon dioxide.
The first step is specifically as follows:
firstly, pouring 200 parts of magnesium sulfate solution, 3 parts of modifier, 2 parts of reinforcing agent and 2 parts of polypropylene fiber into a stirrer for uniform stirring; then 160 parts of magnesium oxide is added and stirred evenly to obtain the original slurry.
Selecting 2 parts of foaming agent, and mixing the raw materials in parts by weight according to the ratio of 1: adding water in a proportion of 40, carrying out foaming treatment through a foaming machine, foaming for 120 seconds, and adding into the raw pulp of the stirring machine to obtain door core plate pulp;
and step three, pouring the door core plate slurry obtained in the step two into a forming mold, and curing for 24 hours to obtain the fireproof door core material.
And step four, airing the fireproof door core material obtained in the step three to obtain a finished product, wherein the airing time is 14 days.
The performance test of the fire door core material prepared in the first to third examples was performed, and the test results are shown in table 1 below.
| Item | Construction industry standard magnesite fireproof door core plate " | Example one | Example two | EXAMPLE III |
| Density, g/cm3 | ≤450 | 348 | 355 | 351 |
| Water content% | ≤12.0 | 10.8 | 11.2 | 10.7 |
| Tensile strength/MPa perpendicular to plate surface | ≥0.13 | 0.26 | 0.25 | 0.24 |
| Chloride ion elution amount/%) | ≤3.0 | 0 | 0 | 0 |
| Moisture absorption and halogen regain | No halogen return and no water drop aggregation | No halogen return and no water drop aggregation | No halogen return and no water drop aggregation | No halogen return and no water drop aggregation |
| Coefficient of softening | 0.95 | 0.96 | 0.94 |
As shown in table 1, the performance indexes of the fireproof door core materials prepared in the first to third embodiments can reach or even exceed the standard of magnesite fireproof door core plates, and the fireproof door core materials do not contain chlorine element and cannot absorb moisture or return halogen, so that the rigid door plates are not easy to corrode, the service life of the fireproof door core materials can be prolonged, and the fireproof door core materials have good fireproof performance and can be widely applied to the building field and the fireproof door industry. After the scheme is adopted, the fireproof door has the advantages of simple production process, convenience in production and processing, light volume weight, high mechanical strength, good fireproof performance, strong weather resistance, low production cost, no three-waste emission, high resource utilization rate, energy conservation, environmental protection and the like, and can be widely applied to the field of buildings and the industry of fireproof doors.
The preferred embodiment four:
the difference from the third embodiment is only that: the feeding sequence of the components in the step one is as follows:
and pouring 160 parts of magnesium oxide into a stirrer, uniformly stirring, and then adding 200 parts of magnesium sulfate solution, 3 parts of modifier, 2 parts of reinforcing agent and 2 parts of polypropylene fiber, and continuously and uniformly stirring to obtain the original slurry.
Preferred embodiment five:
the difference from the third embodiment is only that: the feeding sequence of the components in the step one is as follows:
firstly, pouring 200 parts of magnesium sulfate solution, 3 parts of modifier and 2 parts of reinforcing agent into a stirrer to be uniformly stirred;
then adding 2 parts of polypropylene fiber and 160 parts of magnesium oxide, and continuously and uniformly stirring to obtain the original slurry.
Preferred embodiment six:
the difference from the third embodiment is only that: the feeding sequence of the components in the step one is as follows:
firstly, pouring 200 parts of magnesium sulfate solution into a stirrer to be uniformly stirred;
then adding 2 parts of polypropylene fiber, 3 parts of modifier, 2 parts of reinforcing agent and 160 parts of magnesium oxide, and continuously and uniformly stirring to obtain the original slurry.
The performance of the fire door core obtained in the third to sixth examples was tested, and the test results are shown in table 2 below.
| Item | Construction industry standard magnesite fireproof door core plate " | EXAMPLE III | Example four | EXAMPLE five | EXAMPLE six |
| Density, g/cm3 | ≤450 | 351 | 332 | 341 | 339 |
| Water content% | ≤12.0 | 10.7 | 11.2 | 11.7 | 11.5 |
| Tensile strength/MPa perpendicular to plate surface | ≥0.13 | 0.24 | 0.22 | 0.19 | 0.21 |
| Chloride ion elution amount/%) | ≤3.0 | 0 | 0 | 0 | 0 |
| Moisture absorption and halogen regain | No halogen return and no water drop aggregation | No halogen return and no water drop aggregation | No halogen return and no water drop aggregation | No halogen return and no water drop aggregation | No halogen return and no water drop aggregation |
| Coefficient of softening | 0.94 | 0.95 | 0.97 | 0.96 |
As shown in table 2, the performance indexes of the fireproof door core materials prepared in the third embodiment to the sixth embodiment can reach or even exceed the standard of the magnesite fireproof door core plate, and the fireproof door core material does not contain chlorine element, so that the phenomena of moisture absorption and halogen return cannot occur, and the rigid door plate is not easy to corrode, so that the service life of the fireproof door core material can be prolonged, and meanwhile, the fireproof door core material has good fireproof performance and can be widely applied to the building field and the fireproof door industry. But the components are put in different orders, so that the performance indexes are different, and the following can be seen: the performance index of the fireproof door core material manufactured according to the putting sequence of the third embodiment is optimal.
It should be noted that: the curing time depends on the weather temperature conditions, the hotter the temperature, the shorter the time. The scheme adopts a vertical mould pouring method, basically generates no garbage waste, and can recycle the sawdust of the cut door core plate. Compared with the traditional manual strickling and mechanical production process, the method saves labor and materials. The traditional process generates much garbage and is not easy to treat.
The present invention has been described with reference to the above embodiments and the accompanying drawings, however, the above embodiments are only examples for carrying out the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, modifications and equivalent arrangements included within the spirit and scope of the claims are included within the scope of the invention.
Claims (9)
1. The preparation method of the fireproof door core material is characterized by comprising the following steps:
step one, dissolving magnesium sulfate crystals into water to obtain a magnesium sulfate solution with the concentration of 26-30 mu M; selecting the following raw materials in parts by weight: 100-160 parts of magnesium oxide, 150-200 parts of magnesium sulfate solution, 1.5-3 parts of modifier, 1-2 parts of reinforcing agent and 1-2 parts of polypropylene fiber; uniformly stirring the selected raw materials to obtain raw slurry;
selecting 1-2 parts of foaming agent, and mixing the raw materials in a ratio of 1: adding water in a proportion of 40 for foaming treatment, and adding the foamed raw pulp into the raw pulp obtained in the step one to obtain door core plate pulp;
and step three, pouring the door core plate slurry obtained in the step two into a forming mold, and curing to obtain the fireproof door core material.
2. The method of making a fire door core material as recited in claim 1, wherein step one further comprises:
pouring the selected raw materials into a stirrer, and uniformly stirring to obtain raw slurry;
the second step further comprises: and (4) performing foaming treatment through a foaming machine, and foaming the mixture into a stirrer to obtain the door core plate slurry.
3. The method of claim 2, wherein the foaming time of the foaming machine is 90 to 120 seconds.
4. The method for preparing a fire door core material as recited in claim 1, wherein the first step is specifically:
firstly, 150 parts of magnesium sulfate solution, 1.5-3 parts of modifier, 1-2 parts of reinforcing agent and 1-2 parts of polypropylene fiber are poured into a stirrer to be uniformly stirred; then adding 100 portions of magnesium oxide and 160 portions of magnesium oxide, and continuously and uniformly stirring to obtain the original slurry.
5. The method of making a fire door core as recited in claim 1, wherein the curing time in step three is 8-24 hours.
6. The method of making a fire door core material as recited in claim 1, further comprising a fourth step after the third step of:
and (5) airing the fireproof door core material obtained in the step three to obtain a finished product, wherein the airing time is 7-14 days.
7. The method of making a fire door core as recited in claim 1, wherein the foaming agent is a bioprotein foaming agent.
8. The method of claim 1, wherein the modifier is one or more of oxalic acid, citric acid, and trisodium phosphate.
9. The method of making a fire door core as recited in claim 1, wherein the reinforcing agent is silica.
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| CN201911287690.2A CN111039653A (en) | 2019-12-15 | 2019-12-15 | Preparation method of fireproof door core plate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113480331A (en) * | 2021-07-22 | 2021-10-08 | 浙江长兴聚能合新材料科技有限公司 | Light heat-preservation silicon-oxygen-magnesium foam material and preparation method thereof |
| CN115286352A (en) * | 2021-09-09 | 2022-11-04 | 上海香飘防火板制造有限公司 | Magnesium oxysulfate fireproof plate for tunnel and preparation method thereof |
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| KR20130040083A (en) * | 2011-10-13 | 2013-04-23 | 이동희 | Manufacture method of inorganic foam using magnesia and its hardner at room temperature |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113480331A (en) * | 2021-07-22 | 2021-10-08 | 浙江长兴聚能合新材料科技有限公司 | Light heat-preservation silicon-oxygen-magnesium foam material and preparation method thereof |
| CN115286352A (en) * | 2021-09-09 | 2022-11-04 | 上海香飘防火板制造有限公司 | Magnesium oxysulfate fireproof plate for tunnel and preparation method thereof |
| CN115286352B (en) * | 2021-09-09 | 2023-11-24 | 上海香飘防火板制造有限公司 | Magnesium oxysulfate fireproof plate for tunnel and preparation method thereof |
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Application publication date: 20200421 |
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