CN112876187A - Reinforced moisture-resistant gypsum board and preparation method thereof - Google Patents
Reinforced moisture-resistant gypsum board and preparation method thereof Download PDFInfo
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- CN112876187A CN112876187A CN202110123636.5A CN202110123636A CN112876187A CN 112876187 A CN112876187 A CN 112876187A CN 202110123636 A CN202110123636 A CN 202110123636A CN 112876187 A CN112876187 A CN 112876187A
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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
- C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
-
- 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
- C04B2111/27—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
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
A reinforced moisture-resistant gypsum board and a preparation method thereof. The preparation raw materials of the core of the reinforced moisture-resistant gypsum board comprise: 4900 parts of calcined gypsum, 15-25 parts of starch, 15-30 parts of coagulant, 3-7 parts of vinyl acetate-ethylene copolymer emulsion, 10-20 parts of aluminate, 0-7 parts of sodium trimetaphosphate, 0-6 parts of glass fiber, 40-50 parts of water reducing agent, 2-5 parts of foaming agent and 3000 parts of water by weight. The reinforced moisture-resistant gypsum board has the advantages of high strength, good moisture resistance and low production cost.
Description
Technical Field
The application relates to a gypsum board production technology, in particular to a reinforced moisture-resistant gypsum board and a preparation method thereof.
Background
Most of the paper-surface gypsum boards on the market at present are reinforced by glass fibers, if the using amount of the glass fibers is small, the strength of the gypsum board is not obviously increased, and if the using amount of the glass fibers is large, the gypsum board is easy to block materials, the process is complex and the cost is high. The oxygen-containing silicone oil on the market has good waterproof effect, but the oxygen-containing silicone oil is expensive and is not suitable for being used for a moisture-proof board. Sodium trimetaphosphate is used for gypsum boards, and the generated insoluble calcium phosphate salt has certain moisture resistance and enhancement effects, but the effect is limited.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the present application.
The application provides a reinforced moisture-resistant gypsum board and a preparation method thereof, and the gypsum board has high strength, good moisture resistance and low production cost.
Specifically, the application provides a reinforced moisture-resistant gypsum board, and a core of the reinforced moisture-resistant gypsum board is prepared from raw materials including vinyl acetate-ethylene copolymer emulsion and aluminate.
In an embodiment of the present application, the raw materials for preparing the core of the reinforced moisture-resistant gypsum board may include:
in embodiments of the present application, the plaster of paris may be selected from any one or more of desulfurized gypsum, phosphogypsum, lemon gypsum, fluorgypsum, titanium gypsum and natural gypsum.
In embodiments of the present application, the starch may be selected from any one or more of modified starch and destructured starch.
In embodiments herein, the set accelerator may be selected from any one or more of potassium sulfate, sodium sulfate, magnesium sulfate, sodium fluorosilicate, and gypsum.
In the embodiment of the present application, the water reducing agent may be one or more selected from lignin sulfonate type water reducing agents, naphthalene type high efficiency water reducing agents, melamine type high efficiency water reducing agents, sulfamate type high efficiency water reducing agents, fatty acid type high efficiency water reducing agents, and polycarboxylate type high efficiency water reducing agents.
In embodiments herein, the foaming agent may be an anionic surfactant based foaming agent.
Optionally, the foaming agent can be selected from any one or more of sodium lauryl alcohol ether sulfate, sodium fatty alcohol-polyoxyethylene ether sulfate, sodium alpha-alkenyl sulfonate, sodium decyl monosulfate and sodium monooctyl sulfate.
The present application also provides a method of making the reinforced moisture resistant gypsum board described above, comprising:
(1) weighing the raw materials in parts by weight;
(2) completely dissolving sodium trimetaphosphate in part of water for later use;
(3) grinding the starch, the gypsum in the coagulant and the aluminate for later use;
(4) uniformly mixing calcined gypsum, glass fiber, coagulant except gypsum and the material obtained in the step (3);
(5) mixing the foaming agent and the rest water, emulsifying, and then introducing compressed air;
(6) adding the vinyl acetate-ethylene copolymer emulsion and the materials obtained in the steps (2) and (4) into a mixer, uniformly mixing to form slurry, and adding the material obtained in the step (5) when the slurry flows out of the mixer;
(7) paving the slurry obtained in the step (6) on a protective paper, forming, and adhering the edge of the protective paper by using an adhesive tape;
(8) and (4) drying the semi-finished product obtained in the step (7) to obtain the reinforced moisture-resistant gypsum board.
In an embodiment of the present application, the drying may include: stage one, drying at 125-135 deg.C for 8-12 min; stage two, drying at 125-135 deg.C for 8-12 min; stage three, drying at 110-120 ℃ for 10-15 minutes; and stage four, drying for 15-20 minutes at 90-100 ℃.
In the embodiments of the present application, the pressure of the compressed air may be 0.3 to 0.5 MPa.
According to the gypsum board, the vinyl acetate-ethylene copolymer emulsion and the aluminate are added into the gypsum board, so that the strength and the moisture resistance of the gypsum board are obviously improved, and the vinyl acetate-ethylene copolymer emulsion and the aluminate are simultaneously added into the gypsum board to obtain a synergistic effect.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. Other advantages of the present application may be realized and attained by the instrumentalities and methods described in the specification.
Detailed Description
Hereinafter, embodiments of the present application will be described in detail to make objects, technical solutions and advantages of the present application more apparent. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The raw materials and reagents used in the following examples and comparative examples are all common commercial products unless otherwise specified.
Example 1
(1) Weighing 4900 parts of desulfurized calcined gypsum, 3420 parts of water, 20 parts of modified starch, 49 parts of FDN-A naphthalene-based efficient water reducing agent, 10 parts of 212 aluminate coupling agent, 7 parts of vinyl acetate-ethylene copolymer emulsion, 1.8 parts of sodium dodecyl sulfate (foaming agent), 0.6 part of sodium dodecyl alcohol ether sulfate, 216 parts of foaming water, 0.4MpA of compressed air, 15 parts of desulfurized gypsum (coagulant), 10 parts of potassium sulfate (coagulant), 5 parts of sodium trimetaphosphate, 5 parts of glass fiber, 1.1 parts of polyvinyl acetate emulsion (edge-bonding adhesive), 150g/m of base paper2Base paper of 180g/m2；
(2) Mixing the weighed water with sodium trimetaphosphate to completely dissolve the sodium trimetaphosphate for later use;
(3) grinding the weighed modified starch, the desulfurized gypsum and the aluminate coupling agent by a ball mill, controlling the material temperature in the ball mill to be below 50 ℃ for standby, and using up the ground material within 30 minutes;
(4) mixing and stirring the weighed desulfurized calcined gypsum, potassium sulfate, glass fiber and the ground material in the step (3) uniformly;
(5) mixing the weighed foaming agent and foaming water by a mixing pump, emulsifying by an emulsifying pump, and introducing compressed air;
(6) adding the weighed vinyl acetate-ethylene copolymer emulsion and the materials obtained in the steps (2) and (4) into a mixer, stirring and then flowing out; when the slurry flows out, adding the material obtained in the step (5);
(7) making the slurry obtained in the step (6) flow in 180g/m2On the base paper of (1). Then 180g/m2Base paper, pulp, 150g/m2While passing through a press plate (180 g/m)2The base paper is below, 150g/m2The base paper is arranged above and the pulp is arranged in the middle), extrusion molding is carried out, and meanwhile, the protective paper wraps the gypsum tightly), so that a gypsum plaster board with the thickness of 9.5mm is prepared;
(8) adopting polyvinyl acetate emulsion to bond the edge of the base paper;
(9) and (3) drying the formed semi-finished product in a dryer: the temperature of the first area of the dryer is 129 ℃ and 130 ℃, and the drying time is 9 minutes; the temperature of the second zone is 127-; the temperature of the third zone is 117 ℃ and 119 ℃, and the drying time is 10 minutes; the temperature of the four zones is 96-99 ℃, and the drying time is 18 minutes.
Example 2
This embodiment differs from embodiment 1 only in that: sodium trimetaphosphate and glass fiber were not added.
Example 3
This embodiment differs from embodiment 1 only in that: sodium trimetaphosphate was not added.
Example 4
This embodiment differs from embodiment 1 only in that: no glass fiber was added.
Example 5
This embodiment differs from embodiment 1 only in that: 20 parts by weight of an aluminate coupling agent.
Example 6
This embodiment differs from embodiment 1 only in that: 3 parts by weight of vinyl acetate-ethylene copolymer emulsion.
Comparative example 1
This comparative example differs from example 1 only in that: no vinyl acetate-ethylene copolymer emulsion was added.
Comparative example 2
This comparative example differs from example 1 only in that: no aluminate is added.
Comparative example 3
This comparative example differs from example 1 only in that: vinyl acetate-ethylene copolymer emulsion and aluminate are not added.
In summary, the differences between examples 1-6 and comparative examples 1-3 are shown in Table 1:
TABLE 1
Performance testing
The 9.5mm thick gypsum plasterboards obtained in examples 1 to 6 and comparative examples 1 to 3 were subjected to a performance test in accordance with the chinese national standard GB/T9775-2008, and the test results are shown in table 2.
TABLE 2
It can be seen that compared with the paper-surface gypsum board of the comparative example, the paper-surface gypsum board of the embodiment of the application has obviously higher strength and obviously lower water absorption and moisture deflection, which shows that the paper-surface gypsum board of the embodiment of the application has higher strength and better moisture resistance.
By comparing example 2 with comparative example 3, it can be seen that gypsum boards obtained by using aluminate, vinyl acetate-ethylene copolymer emulsion instead of glass fiber and sodium trimetaphosphate performed better.
The gypsum boards prepared by adding both aluminate and vinyl acetate-ethylene copolymer emulsions in example 1 had significantly higher strength, significantly lower water absorption and lower moisture deflection, compared to the gypsum boards prepared in comparative examples 1-2, in which either aluminate or vinyl acetate-ethylene copolymer emulsion was added alone, indicating that the gypsum boards of example 1 of the present application had synergistic effects in strength and moisture resistance when both aluminate and vinyl acetate-ethylene copolymer emulsions were added.
Although the embodiments disclosed in the present application are described above, the descriptions are only for the convenience of understanding the present application, and are not intended to limit the present application. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.
Claims (10)
1. The reinforced moisture-proof gypsum board is characterized in that a board core of the reinforced moisture-proof gypsum board is prepared from raw materials including vinyl acetate-ethylene copolymer emulsion and aluminate.
2. The reinforced moisture resistant gypsum board of claim 1, wherein the core of the reinforced moisture resistant gypsum board is prepared from:
3. the enhanced moisture resistant gypsum board of claim 2, wherein the plaster of paris is selected from any one or more of desulfurized gypsum, phosphogypsum, lemon gypsum, fluorogypsum, titanium gypsum and natural gypsum.
4. The reinforced moisture resistant gypsum board of claim 2, wherein the starch is selected from any one or more of modified starch and destructured starch.
5. The enhanced moisture resistant gypsum board of claim 2 wherein the set accelerator is selected from any one or more of potassium sulfate, sodium sulfate, magnesium sulfate, sodium fluorosilicate, and gypsum.
6. The reinforced moisture-resistant gypsum board according to claim 2, wherein the water-reducing agent is one or more of lignosulfonate water-reducing agents, naphthalene-based high-efficiency water-reducing agents, melamine-based high-efficiency water-reducing agents, sulfamate-based high-efficiency water-reducing agents, fatty acid-based high-efficiency water-reducing agents and polycarboxylate-based high-efficiency water-reducing agents.
7. The reinforced moisture resistant gypsum board of claim 2, wherein the foaming agent is an anionic surfactant type foaming agent, optionally selected from any one or more of sodium lauryl ether sulfate, sodium fatty alcohol polyoxyethylene ether sulfate, sodium alpha-alkenyl sulfonate, sodium decyl monosulfate, and sodium mono octyl sulfate.
8. The method of making the reinforced moisture resistant gypsum board of any one of claims 2-7, wherein the method of making comprises:
(1) weighing the raw materials in parts by weight;
(2) completely dissolving sodium trimetaphosphate in part of water for later use;
(3) grinding the starch, the gypsum in the coagulant and the aluminate for later use;
(4) uniformly mixing calcined gypsum, glass fiber, coagulant except gypsum and the material obtained in the step (3);
(5) mixing the foaming agent and the rest water, emulsifying, and then introducing compressed air;
(6) adding the vinyl acetate-ethylene copolymer emulsion and the materials obtained in the steps (2) and (4) into a mixer, uniformly mixing to form slurry, and adding the material obtained in the step (5) when the slurry flows out of the mixer;
(7) paving the slurry obtained in the step (6) on a protective paper, forming, and adhering the edge of the protective paper by using an adhesive tape;
(8) and (4) drying the semi-finished product obtained in the step (7) to obtain the reinforced moisture-resistant gypsum board.
9. The production method according to claim 8, wherein the drying includes: stage one, drying at 125-135 deg.C for 8-12 min; stage two, drying at 125-135 deg.C for 8-12 min; stage three, drying at 110-120 ℃ for 10-15 minutes; and stage four, drying for 15-20 minutes at 90-100 ℃.
10. The production method according to claim 8 or 9, wherein the pressure of the compressed air is 0.3 to 0.5 MPa.
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| CN202110123636.5A CN112876187B (en) | 2021-01-29 | 2021-01-29 | Reinforced moisture-resistant gypsum board and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114773012A (en) * | 2022-04-01 | 2022-07-22 | 北新集团建材股份有限公司 | Light heat-preservation and heat-insulation paper-surface gypsum board and preparation method thereof |
| CN114890763A (en) * | 2022-04-01 | 2022-08-12 | 北新集团建材股份有限公司 | Light water-resistant gypsum plaster board and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3562097A (en) * | 1967-01-30 | 1971-02-09 | United States Gypsum Co | Multi-ply cylinder paper of reduced machine-to-cross direction tensile strength ratio |
| JPS539816A (en) * | 1976-07-15 | 1978-01-28 | Matsushita Electric Works Ltd | Method of manufacturing inorganic substrate |
| CN104594111A (en) * | 2014-12-25 | 2015-05-06 | 合肥丹盛包装有限公司 | Corrugated paper containing modified ethylene-vinyl acetate copolymer and preparation method of corrugated paper |
| CN108329007A (en) * | 2018-04-09 | 2018-07-27 | 合肥月煌新型装饰材料有限公司 | A kind of high strong water resistant type plasterboard and preparation method thereof |
| CN110759692A (en) * | 2018-07-27 | 2020-02-07 | 北新集团建材股份有限公司 | Gypsum board with improved bonding performance and preparation method thereof |
| CN111960794A (en) * | 2020-07-23 | 2020-11-20 | 中建材创新科技研究院有限公司 | Water-resistant paper-surface gypsum board and preparation method thereof |
-
2021
- 2021-01-29 CN CN202110123636.5A patent/CN112876187B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3562097A (en) * | 1967-01-30 | 1971-02-09 | United States Gypsum Co | Multi-ply cylinder paper of reduced machine-to-cross direction tensile strength ratio |
| JPS539816A (en) * | 1976-07-15 | 1978-01-28 | Matsushita Electric Works Ltd | Method of manufacturing inorganic substrate |
| CN104594111A (en) * | 2014-12-25 | 2015-05-06 | 合肥丹盛包装有限公司 | Corrugated paper containing modified ethylene-vinyl acetate copolymer and preparation method of corrugated paper |
| CN108329007A (en) * | 2018-04-09 | 2018-07-27 | 合肥月煌新型装饰材料有限公司 | A kind of high strong water resistant type plasterboard and preparation method thereof |
| CN110759692A (en) * | 2018-07-27 | 2020-02-07 | 北新集团建材股份有限公司 | Gypsum board with improved bonding performance and preparation method thereof |
| CN111960794A (en) * | 2020-07-23 | 2020-11-20 | 中建材创新科技研究院有限公司 | Water-resistant paper-surface gypsum board and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114773012A (en) * | 2022-04-01 | 2022-07-22 | 北新集团建材股份有限公司 | Light heat-preservation and heat-insulation paper-surface gypsum board and preparation method thereof |
| CN114890763A (en) * | 2022-04-01 | 2022-08-12 | 北新集团建材股份有限公司 | Light water-resistant gypsum plaster board and preparation method thereof |
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