CN111875334A - Gypsum board with super-strong fire resistance - Google Patents
Gypsum board with super-strong fire resistance Download PDFInfo
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- CN111875334A CN111875334A CN202010799372.0A CN202010799372A CN111875334A CN 111875334 A CN111875334 A CN 111875334A CN 202010799372 A CN202010799372 A CN 202010799372A CN 111875334 A CN111875334 A CN 111875334A
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- gypsum board
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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
- C04B28/14—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/12—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
- E04B1/941—Building elements specially adapted therefor
- E04B1/942—Building elements specially adapted therefor slab-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
- E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
- C04B2111/0062—Gypsum-paper board like 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Building Environments (AREA)
- Panels For Use In Building Construction (AREA)
Abstract
The invention discloses a gypsum board with super-strong fireproof performance, which comprises the following components in percentage by weight: 3-5% of modified starch, 0.2-0.5% of retarder, 0.1-0.2% of water reducing agent, 0.5-2% of air entraining agent, 2-5% of waterborne polyurethane, 5-8% of corundum powder and the balance of desulfurized gypsum powder. In order to achieve super-strong fireproof performance, corundum powder with the fire-resistant temperature of more than 1500 ℃ is added into the gypsum board, and meanwhile, in order to further improve the fireproof performance of the gypsum board, organic silicon modified starch water emulsion and silane modified waterborne polyurethane are also added into the gypsum board, so that a compact net structure can be formed inside the gypsum board under the condition of high temperature, and therefore, the effects of locking moisture and other gas components and preventing fuming are achieved, and the gypsum board is safe and reliable.
Description
Technical Field
The invention relates to the technical field of gypsum boards, in particular to a gypsum board with super-strong fire resistance.
Background
The paper-surface gypsum board is a building material which is prepared by taking gypsum as a main raw material to obtain a board core and coating protective paper on two surfaces, and can be divided into water resistance, fire resistance, sound absorption, phase change and the like according to the use function. Because of its light weight and easy construction, it is widely used in partition walls and suspended ceilings of buildings.
The fire resistance of the thistle board mainly comprises fire stability and fire endurance limit performance, the fire resistance of the thistle board can be classified according to the fire stability and the fire endurance limit, and the fire resistance is related to the service function of the thistle board. The water resistance properties of paper-faced gypsum board include primarily surface water absorption, and continuous relative humidity suitable for the field of use.
The paper-surface gypsum board can influence the strength of the paper-surface gypsum board when absorbing excessive moisture or bearing more fire sources, and the reason is that the dihydrate gypsum inside can absorb heat when meeting high temperature, release crystal water, and the continuous temperature rise reduces the content of the crystal water, thereby influencing the bonding between the gypsum inside the gypsum board and finally influencing the strength of the gypsum board.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a gypsum board with super-strong fireproof performance.
The technical scheme of the invention is as follows:
a gypsum board with super-strong fire-proof performance is composed of the following components in percentage by weight: 3-5% of modified starch, 0.2-0.5% of retarder, 0.1-0.2% of water reducing agent, 0.5-2% of air entraining agent, 2-5% of waterborne polyurethane, 5-8% of corundum powder and the balance of desulfurized gypsum powder.
Preferably, the modified starch is an aqueous emulsion of organosilicon modified starch.
Preferably, the retarder is citric acid.
Preferably, the water reducing agent is a naphthalene water reducing agent.
Preferably, the waterborne polyurethane is silane modified waterborne polyurethane.
Preferably, the air entraining agent is sodium dodecyl benzene sulfonate.
Preferably, the content of the calcium sulfate dihydrate in the desulfurized gypsum powder is more than or equal to 93 percent; the grain diameter of the corundum powder and the desulfurized gypsum powder is 250 meshes.
Preferably, the preparation method of the gypsum board with super-strong fire-proof performance comprises the following steps:
A. dehydrating the gypsum powder in a frying pan to convert the gypsum powder into beta-type building gypsum;
B. adding 70-100% of water into beta-type building gypsum and stirring to obtain gypsum slurry;
C. adding waterborne polyurethane and modified starch into the gypsum slurry, uniformly stirring, and aging for 2-3 h;
D. adding the rest raw materials, and stirring to obtain a blank;
E. and (3) flowing the blank onto a lower protective paper laid in advance from a mixer, simultaneously supplying the upper protective paper, rolling and forming into a plate, solidifying and hardening the formed plate on a solidification belt conveyor, and cutting, drying and trimming after hardening to obtain the gypsum board.
The invention has the advantages that: the invention relates to a gypsum board with super-strong fireproof performance, which comprises the following components in percentage by weight: 3-5% of modified starch, 0.2-0.5% of retarder, 0.1-0.2% of water reducing agent, 0.5-2% of air entraining agent, 2-5% of waterborne polyurethane, 5-8% of corundum powder and the balance of desulfurized gypsum powder. In order to achieve super-strong fireproof performance, corundum powder with the fire-resistant temperature of more than 1500 ℃ is added into the gypsum board, and meanwhile, in order to further improve the fireproof performance of the gypsum board, organic silicon modified starch water emulsion and silane modified waterborne polyurethane are also added into the gypsum board, so that a compact net structure can be formed inside the gypsum board under the condition of high temperature, and therefore, the effects of locking moisture and other gas components and preventing fuming are achieved, and the gypsum board is safe and reliable.
Detailed Description
Example 1
A gypsum board with super-strong fire-proof performance is composed of the following components in percentage by weight: 3.5% of organosilicon modified starch water emulsion, 0.3% of citric acid, 0.15% of naphthalene water reducer, 1.2% of sodium dodecyl benzene sulfonate, 3% of silane modified waterborne polyurethane, 7% of corundum powder and the balance of desulfurized gypsum powder.
The content of calcium sulfate dihydrate in the desulfurized gypsum powder is more than or equal to 93 percent; the grain diameter of the corundum powder and the desulfurized gypsum powder is 250 meshes.
The preparation method of the gypsum board with super-strong fire-proof performance comprises the following steps:
A. dehydrating the gypsum powder in a frying pan to convert the gypsum powder into beta-type building gypsum;
B. adding 85% of water into beta-type building gypsum, and stirring to obtain gypsum slurry;
C. adding waterborne polyurethane and modified starch into the gypsum slurry, uniformly stirring, and aging for 2.5 h;
D. adding the rest raw materials, and stirring to obtain a blank;
E. and (3) flowing the blank onto a lower protective paper laid in advance from a mixer, simultaneously supplying the upper protective paper, rolling and forming into a plate, solidifying and hardening the formed plate on a solidification belt conveyor, and cutting, drying and trimming after hardening to obtain the gypsum board.
Example 2
A gypsum board with super-strong fire-proof performance is composed of the following components in percentage by weight: 5% of organic silicon modified starch water emulsion, 0.2% of citric acid, 0.2% of naphthalene water reducing agent, 0.5% of sodium dodecyl benzene sulfonate, 5% of silane modified waterborne polyurethane, 5% of corundum powder and the balance of desulfurized gypsum powder.
The content of calcium sulfate dihydrate in the desulfurized gypsum powder is more than or equal to 93 percent; the grain diameter of the corundum powder and the desulfurized gypsum powder is 250 meshes.
The preparation method of the gypsum board with super-strong fire-proof performance comprises the following steps:
A. dehydrating the gypsum powder in a frying pan to convert the gypsum powder into beta-type building gypsum;
B. adding 100% of water into beta-type building gypsum and stirring to obtain gypsum slurry;
C. adding waterborne polyurethane and modified starch into the gypsum slurry, uniformly stirring, and aging for 3 h;
D. adding the rest raw materials, and stirring to obtain a blank;
E. and (3) flowing the blank onto a lower protective paper laid in advance from a mixer, simultaneously supplying the upper protective paper, rolling and forming into a plate, solidifying and hardening the formed plate on a solidification belt conveyor, and cutting, drying and trimming after hardening to obtain the gypsum board.
Example 3
A gypsum board with super-strong fire-proof performance is composed of the following components in percentage by weight: 3% of organic silicon modified starch aqueous emulsion, 0.5% of citric acid, 0.1% of naphthalene water reducing agent, 2% of sodium dodecyl benzene sulfonate, 2% of silane modified waterborne polyurethane, 8% of corundum powder and the balance of desulfurized gypsum powder.
The content of calcium sulfate dihydrate in the desulfurized gypsum powder is more than or equal to 93 percent; the grain diameter of the corundum powder and the desulfurized gypsum powder is 250 meshes.
The preparation method of the gypsum board with super-strong fire-proof performance comprises the following steps:
A. dehydrating the gypsum powder in a frying pan to convert the gypsum powder into beta-type building gypsum;
B. adding 70% of water into beta-type building gypsum and stirring to obtain gypsum slurry;
C. adding waterborne polyurethane and modified starch into the gypsum slurry, uniformly stirring, and aging for 2 h;
D. adding the rest raw materials, and stirring to obtain a blank;
E. and (3) flowing the blank onto a lower protective paper laid in advance from a mixer, simultaneously supplying the upper protective paper, rolling and forming into a plate, solidifying and hardening the formed plate on a solidification belt conveyor, and cutting, drying and trimming after hardening to obtain the gypsum board.
Example 4
A gypsum board with super-strong fire-proof performance is composed of the following components in percentage by weight: 4.5% of organosilicon modified starch water emulsion, 0.35% of citric acid, 0.1% of naphthalene water reducer, 2% of sodium dodecyl benzene sulfonate, 4.2% of silane modified waterborne polyurethane, 6.5% of corundum powder and the balance of desulfurized gypsum powder.
The content of calcium sulfate dihydrate in the desulfurized gypsum powder is more than or equal to 93 percent; the grain diameter of the corundum powder and the desulfurized gypsum powder is 250 meshes.
The preparation method of the gypsum board with super-strong fire-proof performance comprises the following steps:
A. dehydrating the gypsum powder in a frying pan to convert the gypsum powder into beta-type building gypsum;
B. adding 75% of water into beta-type building gypsum, and stirring to obtain gypsum slurry;
C. adding waterborne polyurethane and modified starch into the gypsum slurry, uniformly stirring, and aging for 2.5 h;
D. adding the rest raw materials, and stirring to obtain a blank;
E. and (3) flowing the blank onto a lower protective paper laid in advance from a mixer, simultaneously supplying the upper protective paper, rolling and forming into a plate, solidifying and hardening the formed plate on a solidification belt conveyor, and cutting, drying and trimming after hardening to obtain the gypsum board.
Example 5
A gypsum board with super-strong fire-proof performance is composed of the following components in percentage by weight: 4.5% of organosilicon modified starch water emulsion, 0.5% of citric acid, 0.2% of naphthalene water reducer, 0.5% of sodium dodecyl benzene sulfonate, 3.5% of silane modified waterborne polyurethane, 8% of corundum powder and the balance of desulfurized gypsum powder.
The content of calcium sulfate dihydrate in the desulfurized gypsum powder is more than or equal to 93 percent; the grain diameter of the corundum powder and the desulfurized gypsum powder is 250 meshes.
The preparation method of the gypsum board with super-strong fire-proof performance comprises the following steps:
A. dehydrating the gypsum powder in a frying pan to convert the gypsum powder into beta-type building gypsum;
B. adding 70% of water into beta-type building gypsum and stirring to obtain gypsum slurry;
C. adding waterborne polyurethane and modified starch into the gypsum slurry, uniformly stirring, and aging for 3 h;
D. adding the rest raw materials, and stirring to obtain a blank;
E. and (3) flowing the blank onto a lower protective paper laid in advance from a mixer, simultaneously supplying the upper protective paper, rolling and forming into a plate, solidifying and hardening the formed plate on a solidification belt conveyor, and cutting, drying and trimming after hardening to obtain the gypsum board.
Comparative example 1
The silane modified waterborne polyurethane in the embodiment 1 is replaced by the unmodified waterborne polyurethane, and the rest proportion and the preparation method are not changed.
The test method comprises the following steps:
the time of fire stability refers to the standard GB/T9775-2008;
the breaking strength is determined according to the standard GB/T9775-2008;
and (4) testing the fire-retardant grade according to the standard GB 50222-2017.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A gypsum board with super-strong fire resistance is characterized by comprising the following components in percentage by weight: 3-5% of modified starch, 0.2-0.5% of retarder, 0.1-0.2% of water reducing agent, 0.5-2% of air entraining agent, 2-5% of waterborne polyurethane, 5-8% of corundum powder and the balance of desulfurized gypsum powder.
2. Gypsum board having superior fire resistance according to claim 1, wherein said modified starch is an aqueous emulsion of silicone modified starch.
3. Gypsum board having superior fire resistance according to claim 1, wherein the retarder is citric acid.
4. The gypsum board having superior fire resistance according to claim 1, wherein the water reducing agent is a naphthalene based water reducing agent.
5. Gypsum board having superior fire resistance according to claim 1, wherein the aqueous polyurethane is silane-modified aqueous polyurethane.
6. Gypsum board having superior fire resistance according to claim 1, wherein the air-entraining agent is sodium dodecylbenzenesulfonate.
7. The gypsum board with super-strong fire-proof performance according to claim 1, wherein the content of calcium sulfate dihydrate in the desulfurized gypsum powder is more than or equal to 93 percent; the grain diameter of the corundum powder and the desulfurized gypsum powder is 250 meshes.
8. Gypsum board having superior fire resistance according to claim 1, wherein the method of preparation comprises the steps of:
A. dehydrating the gypsum powder in a frying pan to convert the gypsum powder into beta-type building gypsum;
B. adding 70-100% of water into beta-type building gypsum and stirring to obtain gypsum slurry;
C. adding waterborne polyurethane and modified starch into the gypsum slurry, uniformly stirring, and aging for 2-3 h;
D. adding the rest raw materials, and stirring to obtain a blank;
E. and (3) flowing the blank onto a lower protective paper laid in advance from a mixer, simultaneously supplying the upper protective paper, rolling and forming into a plate, solidifying and hardening the formed plate on a solidification belt conveyor, and cutting, drying and trimming after hardening to obtain the gypsum board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010799372.0A CN111875334A (en) | 2020-08-11 | 2020-08-11 | Gypsum board with super-strong fire resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010799372.0A CN111875334A (en) | 2020-08-11 | 2020-08-11 | Gypsum board with super-strong fire resistance |
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| CN111875334A true CN111875334A (en) | 2020-11-03 |
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| CN202010799372.0A Pending CN111875334A (en) | 2020-08-11 | 2020-08-11 | Gypsum board with super-strong fire resistance |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030138614A1 (en) * | 2000-07-18 | 2003-07-24 | Claude Leclercq | Plasterboard composition, preparation of this composition and manufacture of plasterboards |
| CN104556940A (en) * | 2014-12-30 | 2015-04-29 | 青岛佳尚创意文化有限公司 | Fire-proof gypsum board |
| CN105440972A (en) * | 2015-07-31 | 2016-03-30 | 湖南工业大学 | Nano-compound biomass waterborne adhesive |
| CN107053431A (en) * | 2017-03-21 | 2017-08-18 | 宣城万佳建材股份有限公司 | A kind of high intensity, fire-proof and water-proof Thistle board and its preparation technology |
| CN110093140A (en) * | 2019-05-08 | 2019-08-06 | 广东伟明涂料有限公司 | A kind of synthetic method of the silane-modified water-based polyurethane adhesive of high intensity |
-
2020
- 2020-08-11 CN CN202010799372.0A patent/CN111875334A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030138614A1 (en) * | 2000-07-18 | 2003-07-24 | Claude Leclercq | Plasterboard composition, preparation of this composition and manufacture of plasterboards |
| CN104556940A (en) * | 2014-12-30 | 2015-04-29 | 青岛佳尚创意文化有限公司 | Fire-proof gypsum board |
| CN105440972A (en) * | 2015-07-31 | 2016-03-30 | 湖南工业大学 | Nano-compound biomass waterborne adhesive |
| CN107053431A (en) * | 2017-03-21 | 2017-08-18 | 宣城万佳建材股份有限公司 | A kind of high intensity, fire-proof and water-proof Thistle board and its preparation technology |
| CN110093140A (en) * | 2019-05-08 | 2019-08-06 | 广东伟明涂料有限公司 | A kind of synthetic method of the silane-modified water-based polyurethane adhesive of high intensity |
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Application publication date: 20201103 |
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