CN117105626A - Fireproof and heat-insulating integrated plate compounding method - Google Patents
Fireproof and heat-insulating integrated plate compounding method Download PDFInfo
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- CN117105626A CN117105626A CN202311178942.4A CN202311178942A CN117105626A CN 117105626 A CN117105626 A CN 117105626A CN 202311178942 A CN202311178942 A CN 202311178942A CN 117105626 A CN117105626 A CN 117105626A
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- 238000013329 compounding Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 28
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 43
- 239000010440 gypsum Substances 0.000 claims abstract description 43
- 239000002002 slurry Substances 0.000 claims abstract description 37
- 238000005303 weighing Methods 0.000 claims abstract description 9
- 238000005266 casting Methods 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims description 52
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 36
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 26
- 239000012784 inorganic fiber Substances 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000009413 insulation Methods 0.000 claims description 14
- 229920000881 Modified starch Polymers 0.000 claims description 13
- 239000004368 Modified starch Substances 0.000 claims description 13
- 235000019426 modified starch Nutrition 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 12
- 239000013530 defoamer Substances 0.000 claims description 11
- 239000000835 fiber Substances 0.000 claims description 10
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 9
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 239000011507 gypsum plaster Substances 0.000 claims description 9
- 235000010489 acacia gum Nutrition 0.000 claims description 8
- 239000001785 acacia senegal l. willd gum Substances 0.000 claims description 8
- 239000004816 latex Substances 0.000 claims description 8
- 229920000126 latex Polymers 0.000 claims description 8
- 239000011490 mineral wool Substances 0.000 claims description 8
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 6
- 239000011094 fiberboard Substances 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 5
- 239000000839 emulsion Substances 0.000 claims description 5
- 229920002748 Basalt fiber Polymers 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 229920002472 Starch Polymers 0.000 claims description 3
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 3
- -1 polydimethylsiloxane Polymers 0.000 claims description 3
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 3
- 239000011118 polyvinyl acetate Substances 0.000 claims description 3
- 235000019698 starch Nutrition 0.000 claims description 3
- 239000008107 starch Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 21
- 239000000853 adhesive Substances 0.000 abstract description 11
- 230000001070 adhesive effect Effects 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000004566 building material Substances 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000012774 insulation material Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 241000220479 Acacia Species 0.000 description 2
- 235000010643 Leucaena leucocephala Nutrition 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Classifications
-
- 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
- C04B28/14—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 calcium sulfate cements
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/38—Polysaccharides or derivatives thereof
-
- 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
-
- 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
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- 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 discloses a fireproof and heat-insulating integrated plate compounding method, and belongs to the field of building materials. The invention aims to solve the problems that the fireproof and heat-insulating integrated material prepared by the existing method is easy to crack and fall off in the use process, and meanwhile, the use of the adhesive increases the production cost and environmental pollution. The method comprises the following steps: 1. weighing; 2. preparing gypsum board slurry; 3. casting and compounding; 4. pressurizing; 5. and (5) demolding. The invention is used for compounding fireproof and heat-insulating integrated boards.
Description
Technical Field
The invention belongs to the field of building materials.
Background
At present, fireproof boards and heat-insulating boards widely used in the building field have advantages and disadvantages. The fireproof plate for the building is mainly a cementing plate such as a gypsum board and the like, has good fireproof performance, but has poor heat preservation performance; the heat-insulating board mainly comprises rock wool boards, aluminum silicate fiber boards and other materials, and has good heat-insulating performance. Therefore, in practical application, the two components are required to be combined together so as to achieve the effects of fire prevention and heat preservation.
Traditionally, gypsum board and building insulation board need install respectively when using, have increased construction degree of difficulty and cost. Therefore, the composite preparation of the gypsum board and the building heat-insulating board becomes a development direction. In the prior art, when preparing the fireproof and heat-insulating integrated material, the common composite method adopts adhesive bonding and screw fixing: adhesives typically use a fire resistant adhesive to bond the gypsum board and insulation board together; screw fixation typically uses self-tapping screws to fasten the plasterboard and insulation board materials together. However, the two methods can lead to cracking and falling off of the compounded plate in the use process, and the use of the adhesive can increase the production cost and environmental pollution.
Disclosure of Invention
The invention aims to solve the problems that the fireproof and heat-preservation integrated material prepared by the existing method is easy to crack and fall off in the use process, and meanwhile, the use of the adhesive increases the production cost and environmental pollution, so as to provide the fireproof and heat-preservation integrated plate compounding method.
A fireproof and heat-insulating integrated plate compounding method is carried out according to the following steps:
1. weighing:
weighing 800-1000 parts of plaster of paris powder, 10-12 parts of modified starch ether, 20-30 parts of redispersible emulsion, 200-300 parts of Arabic gum, 0.5-2.5 parts of citric acid retarder, 0.5-0.7 part of organosilicon defoamer, 30-50 parts of inorganic fiber and 600-670 parts of water according to parts by mass;
2. preparing gypsum board slurry:
mixing 0.5 to 2.5 parts of citric acid retarder and 600 to 670 parts of water until the citric acid retarder and the water are completely dissolved, then adding 30 to 50 parts of inorganic fibers, stirring until the inorganic fibers are uniformly dispersed, then adding 800 to 1000 parts of plaster of paris, stirring uniformly, and finally sequentially adding 10 to 12 parts of modified starch ether, 20 to 30 parts of redispersible latex, 200 to 300 parts of Arabic gum and 0.5 to 0.7 part of organosilicon defoamer, and stirring uniformly to obtain gypsum board slurry;
3. casting and compounding:
pouring gypsum board slurry into a mould for initial setting to obtain initial set gypsum slurry, and then placing an insulation board on the initial set gypsum slurry to obtain a to-be-pressed board;
4. pressurizing:
pressing the pressing plate to obtain an initial-setting pressing plate, pressing the pressing pressure to 3 MPa-3.5 MPa with a gradient of 0.5 MPa/min-1 MPa/min at the temperature of 20-25 ℃ and the humidity of 60-65%, pressing the pressing pressure to 3 MPa-5 min with a gradient of 3 MPa-3.5 MPa, pressing the pressing pressure to 4 MPa-5 MPa with a gradient of 0.5 MPa/min-1 MPa/min at the temperature of 20-25 ℃ and the humidity of 60-65%, and pressing the pressing pressure to 4 MPa-5 MPa for 5 min-10 min to obtain the pressing plate;
5. demolding:
and standing the plate subjected to the pressurization treatment at room temperature until the plate is completely solidified, and demolding and drying to obtain the fireproof heat-preserving integrated plate.
The beneficial effects of the invention are as follows:
1. in the initial setting stage of the fireproof board material (gypsum board slurry), the building heat-insulating board material and the fireproof board material are compounded and subjected to gradient compression molding, so that the thickness uniformity of the fireproof board is ensured, and the bonding strength between the building heat-insulating board material and the fireproof board material is also ensured;
2. according to the invention, an adhesive is not required to be additionally used, modified starch ether, redispersible latex and acacia are mixed into the gypsum board slurry as the adhesive, so that the bonding strength between the fireproof material and the heat insulation material is greatly improved, the heat insulation material has the fireproof advantage, and the heat insulation material can be bonded with the fireproof board in a seamless manner. The prepared fireproof and heat-preservation integrated plate has synchronous compounding process and strong adhesive force, and reduces the production cost and the use cost.
3. The bonding strength of the fireproof and heat-insulating integrated plate can reach 1.5 MPa-5 MPa, the fireproof and heat-insulating integrated plate has fireproof and heat-insulating effects, the heat conductivity coefficient is as low as 0.07W/(m.K) -0.15W/(m.K), and the fireproof limit is as high as 30 min-3 h.
4. The fireproof and heat-insulating integrated plate prepared by the invention has good use effect and stability. The stability is evaluated by using the board heating permanent line change and the water content as indexes, and the measured board heating permanent line change is 0.3% -0.5%, and the water content is as low as 0.3%.
In conclusion, the process for preparing the fireproof and heat-insulating integrated plate by compounding the fireproof plate and the building heat-insulating plate has practicability, innovation and economy, has wide application prospect and market value, and meets the protection requirements specified by the patent laws.
The invention is used for a fireproof heat-preservation integrated plate compounding method.
Drawings
Fig. 1 is a schematic structural diagram of a fireproof and heat-insulating integrated board prepared in the first embodiment, wherein 1 is a heat-insulating board, and 2 is a fireproof board;
fig. 2 is a physical diagram of a fireproof and heat-insulating integrated board prepared in the first embodiment, wherein 1 is a heat-insulating board, and 2 is a fireproof board;
FIG. 3 is a microscopic view of the interface between the two boards of the fireproof and heat-insulating integrated board prepared in the first embodiment;
fig. 4 is a microscopic view of the interface between the two boards of the fireproof and heat-insulating integrated board prepared in the second embodiment.
Detailed Description
The technical scheme of the invention is not limited to the specific embodiments listed below, but also includes any combination of the specific embodiments.
The first embodiment is as follows: the embodiment mode of the fireproof and heat-preservation integrated plate compounding method is carried out according to the following steps:
1. weighing:
weighing 800-1000 parts of plaster of paris powder, 10-12 parts of modified starch ether, 20-30 parts of redispersible emulsion, 200-300 parts of Arabic gum, 0.5-2.5 parts of citric acid retarder, 0.5-0.7 part of organosilicon defoamer, 30-50 parts of inorganic fiber and 600-670 parts of water according to parts by mass;
2. preparing gypsum board slurry:
mixing 0.5 to 2.5 parts of citric acid retarder and 600 to 670 parts of water until the citric acid retarder and the water are completely dissolved, then adding 30 to 50 parts of inorganic fibers, stirring until the inorganic fibers are uniformly dispersed, then adding 800 to 1000 parts of plaster of paris, stirring uniformly, and finally sequentially adding 10 to 12 parts of modified starch ether, 20 to 30 parts of redispersible latex, 200 to 300 parts of Arabic gum and 0.5 to 0.7 part of organosilicon defoamer, and stirring uniformly to obtain gypsum board slurry;
3. casting and compounding:
pouring gypsum board slurry into a mould for initial setting to obtain initial set gypsum slurry, and then placing an insulation board on the initial set gypsum slurry to obtain a to-be-pressed board;
4. pressurizing:
pressing the pressing plate to obtain an initial-setting pressing plate, pressing the pressing pressure to 3 MPa-3.5 MPa with a gradient of 0.5 MPa/min-1 MPa/min at the temperature of 20-25 ℃ and the humidity of 60-65%, pressing the pressing pressure to 3 MPa-5 min with a gradient of 3 MPa-3.5 MPa, pressing the pressing pressure to 4 MPa-5 MPa with a gradient of 0.5 MPa/min-1 MPa/min at the temperature of 20-25 ℃ and the humidity of 60-65%, and pressing the pressing pressure to 4 MPa-5 MPa for 5 min-10 min to obtain the pressing plate;
5. demolding:
and standing the plate subjected to the pressurization treatment at room temperature until the plate is completely solidified, and demolding and drying to obtain the fireproof heat-preserving integrated plate.
In the fifth step of the present embodiment, the excess moisture is naturally dried at room temperature or removed using a drying apparatus.
The beneficial effects of this embodiment are:
1. in the initial setting stage of the fireproof board material (gypsum board slurry), the building heat-insulating board and the fireproof board material are compounded and subjected to gradient compression molding, so that the thickness uniformity of the fireproof board material is ensured, and the bonding strength between the building heat-insulating board and the fireproof board material is also ensured;
2. according to the embodiment, an adhesive is not required to be additionally used, modified starch ether, redispersible latex and acacia are mixed into the gypsum board slurry to serve as the adhesive, so that the bonding strength between the fireproof material and the heat insulation material is greatly improved, the heat insulation material has the fireproof advantage, and the heat insulation material can be bonded with the fireproof board in a seamless mode. The prepared fireproof and heat-preservation integrated plate has synchronous compounding process and strong adhesive force, and reduces the production cost and the use cost.
3. The bonding strength of the fireproof and heat-insulating integrated plate can reach 1.5 MPa-5 MPa, the fireproof and heat-insulating integrated plate has fireproof and heat-insulating effects, the heat conductivity coefficient is as low as 0.07W/(m.K) -0.15W/(m.K), and the fireproof limit is as high as 30 min-3 h.
4. The fireproof and heat-insulating integrated plate prepared by the embodiment has good use effect and stability. The stability is evaluated by using the board heating permanent line change and the water content as indexes, and the measured board heating permanent line change is 0.3% -0.5%, and the water content is as low as 0.3%.
In summary, the process for preparing the fireproof and heat-insulating integrated board by compounding the fireproof plate and the building heat-insulating board provided by the embodiment has practicability, innovation and economy, has wide application prospect and market value, and meets the protection requirements specified by the patent laws.
The second embodiment is as follows: the first difference between this embodiment and the specific embodiment is that: the modified starch ether in the first step is starch. The other is the same as in the first embodiment.
And a third specific embodiment: this embodiment differs from one or both of the embodiments in that: the redispersible emulsion in step one is polyvinyl acetate. The other is the same as the first or second embodiment.
The specific embodiment IV is as follows: this embodiment differs from one of the first to third embodiments in that: the organic silicon defoamer in the first step is polydimethylsiloxane. The other embodiments are the same as those of the first to third embodiments.
Fifth embodiment: this embodiment differs from one to four embodiments in that: the inorganic fiber in the first step is glass fiber, ceramic fiber or basalt fiber, the length is 3 mm-5 mm, and the diameter is 2 mu m-3 mu m; and step three, the heat-insulating board is a rock wool board or an aluminum silicate fiber board. The other is the same as in the fourth embodiment.
Specific embodiment six: this embodiment differs from one of the first to fifth embodiments in that: the inorganic fibers in the first step are the same as the fibers in the insulation board in the third step. The other embodiments are the same as those of the first to fifth embodiments.
Seventh embodiment: this embodiment differs from one of the first to sixth embodiments in that: pouring the gypsum board slurry into a mould, and vibrating by a vibrator until the surface of the slurry is leveled and no obvious bubbles exist. The other embodiments are the same as those of the first to sixth embodiments.
Eighth embodiment: this embodiment differs from one of the first to seventh embodiments in that: the initial setting in the third step is to place the gypsum board slurry for 1 min-2 min under the conditions that the temperature is 20 ℃ to 25 ℃ and the humidity is 85 percent to 90 percent. The other is the same as in embodiments one to seven.
Detailed description nine: this embodiment differs from one to eight of the embodiments in that: and step four, pressing the plate to be pressed for 1 to 2 minutes under the conditions that the temperature is 20 to 25 ℃, the humidity is 60 to 80 percent and the pressing pressure is 1 to 1.5MPa, so as to obtain the initial setting pressurizing plate. The others are the same as in embodiments one to eight.
Detailed description ten: this embodiment differs from one of the embodiments one to nine in that: and step five, drying for 24 to 30 hours under the condition that the temperature is 55 to 60 ℃. The others are the same as in embodiments one to nine.
The following examples are used to verify the benefits of the present invention:
embodiment one, specifically described with reference to fig. 1:
a fireproof and heat-insulating integrated plate compounding method is carried out according to the following steps:
1. weighing:
weighing 850 parts of plaster of paris powder, 11 parts of modified starch ether, 25 parts of redispersible latex, 255 parts of Arabic gum, 0.5 part of citric acid retarder, 0.6 part of organosilicon defoamer, 40 parts of inorganic fiber and 650 parts of water according to parts by mass;
2. preparing gypsum board slurry:
mixing 0.5 part of citric acid retarder and 650 parts of water until the citric acid retarder and 650 parts of water are completely dissolved, adding 40 parts of inorganic fibers, stirring for 10 minutes until the inorganic fibers are uniformly dispersed under the condition of the rotating speed of 1500r/min, adding 850 parts of plaster of paris, stirring for 2 minutes until the plaster of paris is uniformly stirred under the condition of the rotating speed of 1000r/min, and finally sequentially adding 11 parts of modified starch ether, 25 parts of redispersible latex, 255 parts of Arabic gum and 0.6 part of organosilicon defoamer, and stirring for 5 minutes until the plaster board slurry is uniformly stirred under the condition of the rotating speed of 2000 r/min;
3. casting and compounding:
pouring gypsum board slurry into a mould, vibrating the gypsum board slurry by a vibrator until the surface of the slurry is leveled and no obvious bubbles exist, placing the gypsum board slurry for 1.5min under the conditions that the temperature is 25 ℃ and the humidity is 90%, obtaining primary set gypsum slurry, and then placing an insulation board on the primary set gypsum slurry, thus obtaining a to-be-pressed board material;
4. pressurizing:
pressing a plate to be pressed for 2min at the temperature of 25 ℃ and the humidity of 70% and the pressing pressure of 1MPa to obtain an initial setting pressing plate, pressing the pressing pressure to 3MPa at the temperature of 25 ℃ and the humidity of 60% with a gradient of 0.5MPa/min, pressing for 4min at the pressing pressure of 3MPa, pressing the pressing pressure to 4MPa at the temperature of 25 ℃ and the humidity of 60% with a gradient of 0.5MPa/min, and pressing for 5min at the pressing pressure of 4MPa to obtain a plate after pressing treatment;
5. demolding:
and standing the plate subjected to the pressurization treatment at room temperature for 24 hours until the plate is completely solidified, and demolding and drying the plate to obtain the fireproof heat-preserving integrated plate.
The modified starch ether in the first step is starch.
The redispersible emulsion in step one is polyvinyl acetate.
The organic silicon defoamer in the first step is polydimethylsiloxane.
The inorganic fiber in the first step is ceramic fiber, the length is 3mm, and the diameter is 2 mu m.
The insulation board in the third step is aluminum silicate fiber board, and is purchased from SYGX-234 model in the high aluminum inorganic series of the aluminum silicate ceramic fiber board of Anyida, has the thickness of 20mm and has good fireproof performance.
The drying in the fifth step is specifically drying for 24 hours at the temperature of 60 ℃.
Embodiment two: the first difference between this embodiment and the first embodiment is that: the inorganic fiber in the first step is basalt fiber; the insulation board in the third step is a rock wool board, is purchased from MF-S80 model in Rockwell rock wool high pressure resistant bottom board series, has the thickness of 50mm, and has certain rigidity. The other is the same as in the first embodiment.
The fireproof and heat-insulating integrated board prepared in the first step of the embodiment consists of a heat-insulating board and a fireproof board (gypsum board), as shown in fig. 2, fig. 2 is a physical diagram of the fireproof and heat-insulating integrated board prepared in the first step of the embodiment, 1 is the heat-insulating board, and 2 is the fireproof board; wherein the size of the thermal insulation plate is 400mm multiplied by 600mm, the thickness is 20mm, the fireproof plate is a gypsum board, the size is 400mm multiplied by 600mm, and the thickness is 4.5mm.
FIG. 3 is a microscopic view of the interface between the two boards of the fireproof and heat-insulating integrated board prepared in the first embodiment; as can be seen from the figure, the cementing material in the gypsum board is filled into the pits on the surface of the heat-insulating material and permeates into the material by about 100 micrometers, the cementing material and the heat-insulating material are mutually interwoven, the prepared fireproof heat-insulating integrated material has strong bonding strength, and seamless connection is realized.
FIG. 4 is a microscopic view of the interface between the two boards of the fire-proof and heat-insulating integrated board prepared in the second embodiment; from the figure, the rock wool fibers are tightly interwoven with the gypsum board, the rock wool fibers penetrate into the gypsum board by about 500 micrometers, are tightly embedded into the gypsum board, and have a good composite effect.
It can be seen from the results that in the first and second embodiments, the aluminum silicate fiber board and the rock wool are respectively compounded by using the gypsum slurry, so that the inorganic fibers doped in the gypsum slurry used for compounding are ceramic fibers and basalt fibers respectively, and as can be seen from fig. 3 and 4, the types of fibers used for the insulation board and the fireproof board are consistent, the two fibers can be better interwoven together, and the binding power is stronger.
According to the national standard GB/T10294 test method, the thermal conductivity of the fireproof and thermal insulation integrated plate prepared in the first embodiment is as low as 0.1W/(m.K), and the thermal conductivity of the protective and thermal insulation integrated plate prepared in the second embodiment is as low as 0.13W/(m.K).
According to BS 476: the Part22 test method shows that the fireproof limit of the fireproof heat-preservation integrated board prepared in the embodiment I reaches 2h25min, and the integrity is good. The fire resistance limit measured in the second example reaches 2h and 10min, and the integrity is good.
According to the standard high-compression-resistance QJ 1634A test method, the tensile strength of the connecting joint in the fireproof heat-preservation integrated plate prepared in the first embodiment is 4.5MPa; the tensile strength of the connecting joint in the fireproof heat-preservation integrated plate prepared in the second embodiment is 5MPa.
According to the standard GB/T17911 test method, the change of the heating permanent line of the fireproof heat-preservation integrated plate prepared in the first embodiment is measured to be 0.5%, and the water content is as low as 0.3%; the fire-proof heat-preservation integrated plate prepared in the second embodiment has a heating permanent line change of 0.3% and a water content as low as 0.3%.
Claims (10)
1. The fireproof and heat-insulating integrated plate compounding method is characterized by comprising the following steps of:
1. weighing:
weighing 800-1000 parts of plaster of paris powder, 10-12 parts of modified starch ether, 20-30 parts of redispersible emulsion, 200-300 parts of Arabic gum, 0.5-2.5 parts of citric acid retarder, 0.5-0.7 part of organosilicon defoamer, 30-50 parts of inorganic fiber and 600-670 parts of water according to parts by mass;
2. preparing gypsum board slurry:
mixing 0.5 to 2.5 parts of citric acid retarder and 600 to 670 parts of water until the citric acid retarder and the water are completely dissolved, then adding 30 to 50 parts of inorganic fibers, stirring until the inorganic fibers are uniformly dispersed, then adding 800 to 1000 parts of plaster of paris, stirring uniformly, and finally sequentially adding 10 to 12 parts of modified starch ether, 20 to 30 parts of redispersible latex, 200 to 300 parts of Arabic gum and 0.5 to 0.7 part of organosilicon defoamer, and stirring uniformly to obtain gypsum board slurry;
3. casting and compounding:
pouring gypsum board slurry into a mould for initial setting to obtain initial set gypsum slurry, and then placing an insulation board on the initial set gypsum slurry to obtain a to-be-pressed board;
4. pressurizing:
pressing the pressing plate to obtain an initial-setting pressing plate, pressing the pressing pressure to 3 MPa-3.5 MPa with a gradient of 0.5 MPa/min-1 MPa/min at the temperature of 20-25 ℃ and the humidity of 60-65%, pressing the pressing pressure to 3 MPa-5 min with a gradient of 3 MPa-3.5 MPa, pressing the pressing pressure to 4 MPa-5 MPa with a gradient of 0.5 MPa/min-1 MPa/min at the temperature of 20-25 ℃ and the humidity of 60-65%, and pressing the pressing pressure to 4 MPa-5 MPa for 5 min-10 min to obtain the pressing plate;
5. demolding:
and standing the plate subjected to the pressurization treatment at room temperature until the plate is completely solidified, and demolding and drying to obtain the fireproof heat-preserving integrated plate.
2. The method for compounding a fireproof and heat-insulating integrated plate according to claim 1, wherein the modified starch ether in the first step is starch.
3. The method of claim 1, wherein the redispersible latex in step one is polyvinyl acetate.
4. The method for compounding a fireproof and heat-insulating integrated plate according to claim 1, wherein the organosilicon defoamer in the first step is polydimethylsiloxane.
5. The method for compounding the fireproof and heat-insulating integrated plate according to claim 1, wherein the inorganic fiber in the first step is glass fiber, ceramic fiber or basalt fiber, the length is 3 mm-5 mm, and the diameter is 2 μm-3 μm; and step three, the heat-insulating board is a rock wool board or an aluminum silicate fiber board.
6. The method for compounding a fireproof and heat-insulating integrated plate according to claim 5, wherein the inorganic fibers in the first step are the same as the fibers in the heat-insulating plate in the third step.
7. The method for compounding the fireproof and heat-insulating integrated board, which is characterized by comprising the following steps of pouring gypsum board slurry into a mold, and vibrating the gypsum board slurry by a vibrator until the surface of the slurry is leveled and no obvious bubbles exist.
8. The method for compounding the fireproof and heat-insulating integrated board, which is characterized in that the initial setting in the step three is to place gypsum board slurry for 1-2 min under the conditions that the temperature is 20-25 ℃ and the humidity is 85-90%.
9. The method for compounding the fireproof and heat-insulating integrated plate according to claim 1, wherein in the fourth step, the plate to be pressed is pressed for 1 min-2 min under the conditions that the temperature is 20-25 ℃, the humidity is 60-80% and the pressing pressure is 1-1.5 MPa, so that the initially-set pressing plate is obtained.
10. The method for compounding the fireproof and heat-insulating integrated plate according to claim 1, wherein the drying in the fifth step is performed for 24-30 hours under the condition that the temperature is 55-60 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311178942.4A CN117105626A (en) | 2023-09-13 | 2023-09-13 | Fireproof and heat-insulating integrated plate compounding method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311178942.4A CN117105626A (en) | 2023-09-13 | 2023-09-13 | Fireproof and heat-insulating integrated plate compounding method |
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| CN202311178942.4A Pending CN117105626A (en) | 2023-09-13 | 2023-09-13 | Fireproof and heat-insulating integrated plate compounding method |
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