CN108129118A - A kind of gypsum slurry and the anti-deformation plastering prepared by the gypsum slurry - Google Patents
A kind of gypsum slurry and the anti-deformation plastering prepared by the gypsum slurry Download PDFInfo
- Publication number
- CN108129118A CN108129118A CN201711452463.1A CN201711452463A CN108129118A CN 108129118 A CN108129118 A CN 108129118A CN 201711452463 A CN201711452463 A CN 201711452463A CN 108129118 A CN108129118 A CN 108129118A
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- China
- Prior art keywords
- gypsum slurry
- deformation
- additive
- plastering
- calcium sulfate
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Classifications
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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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The anti-deformation plastering prepared the present invention provides a kind of gypsum slurry and by the gypsum slurry.The anti-deformation additive of calcium sulfate hemihydrate, 4wt%~5wt% of 74wt%~77wt% is included in the gypsum slurry, based on the brushite of 3.9%~4.5% weight of calcium sulfate hemihydrate, remaining ingredient is water and auxiliary additive.Plastering shows good anti-deformation nature made of gypsum slurry of the present invention, even under high humidity conditions, plastering is also difficult to deform made of gypsum slurry of the present invention, has stronger stability, is very suitable for commercial Application.
Description
Technical field
The invention belongs to plastering fields, and in particular to a kind of gypsum slurry and the anti-deformation prepared by the gypsum slurry
Plastering.
Background technology
During gypsum product is prepared, by the mixing of bassanite (half-H 2 O calcium sulphate and/or dead plaster) and water
Object is cast, and wherein bassanite (mortar) forms set gypsum through aquation, including crystallizing slaked lime cream base matter (sulfate dihydrate
Calcium), make plastering that there is high structural strength.Thus plastering has the light-weight and high advantage of intensity so as to use extensively
In building products, such as the conventional mortar that the plasterboard of ceiling and wall, the machined surface on suspended ceiling use in building.
However found in actually using, it can go out when being exposed to high humility with set gypsum plastering as main component
It now hangs down and creep, the performance influences the beauty of plastering, need to pay expensive renewal expense to improve.Therefore, overcome
The problem of set gypsum ability of anti-deformation is poor is the focus of building trade research.
Invention content
The purpose of the present invention is be directed to above-mentioned existing plastering sagging and creep, anti-shape easily occur under damp condition
Become can force difference, so as to cause stability it is poor the defects of, a kind of anti-deformation plastering is provided.
To achieve the object of the present invention, the present invention provides a kind of gypsum slurries, by weight percentage, the gypsum slurry
In include the anti-deformation additive of calcium sulfate hemihydrate, 4wt%~5wt% of 74wt%~77wt%, based on calcium sulfate hemihydrate
The brushite of 3.9%~4.5% weight, remaining ingredient are water and auxiliary additive.
In the present invention, the anti-deformation additive is one kind in boric acid, gallic acid, tartaric acid and sodium isoascorbate
It is or several.
Preferably, in the present invention, the anti-deformation additive is the mixture of boric acid, tartaric acid and sodium isoascorbate,
Wherein, by weight percentage, the boric acid of the anti-deformation additive including 42wt%~45wt%, 8wt%~12wt%
The sodium isoascorbate of tartaric acid and 43wt%~50wt%.
In the present invention, the auxiliary additive is selected from the one or more of starch, foaming agent, dispersant.
Preferably, in the present invention, the auxiliary additive is the mixture of starch, foaming agent and dispersant, wherein, by weight
Measure percentages, the starch of the auxiliary additive including 23wt%~26wt%, the foaming agent of 35wt%~38wt% and
The dispersant of 36wt%~42wt%.
On the basis of the above, the present invention also provides a kind of anti-deformation plastering, the plastering is by above-mentioned gypsum
Slurry is made.
On the basis of the above, the present invention also provides a kind of preparation methods of anti-deformation plastering, which is characterized in that should
Preparation method step is as follows：Grind brushite, mixing brushite, anti-deformation additive, calcium sulfate hemihydrate, water and auxiliary
Additive is helped to form gypsum slurry；Plastering is formed by the gypsum slurry
Compared with prior art, plastering ability of anti-deformation of the invention is strong, and stability is high, for a long time in wet environment
It being not easy to deform, and raw materials used cheap environmental protection, gypsum sets speed is fast in preparation process, is very suitable for commercial Application,
It can large-scale promotion.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below each other it
Between do not form conflict and can be combined with each other.
In the present invention, by weight percentage, in the gypsum slurry comprising 74wt%~77wt% calcium sulfate hemihydrate,
The anti-deformation additives of 4wt%~5wt%, based on the brushite of 3.9%~4.5% weight of calcium sulfate hemihydrate, remaining ingredient
For water and auxiliary additive.
In the present invention, the anti-deformation additive is one kind in boric acid, gallic acid, tartaric acid and sodium isoascorbate
It is or several.
Preferably, in the present invention, the anti-deformation additive is the mixture of boric acid, tartaric acid and sodium isoascorbate,
Wherein, by weight percentage, the boric acid of the anti-deformation additive including 42wt%~45wt%, 8wt%~12wt%
The sodium isoascorbate of tartaric acid and 43wt%~50wt%.
In the present invention, the auxiliary additive is selected from the one or more of starch, foaming agent, dispersant.
Preferably, in the present invention, the auxiliary additive is the mixture of starch, foaming agent and dispersant, wherein, by weight
Measure percentages, the starch of the auxiliary additive including 23wt%~26wt%, the foaming agent of 35wt%~38wt% and
The dispersant of 36wt%~42wt%.
Embodiment 1：
Grind brushite, mixing brushite, anti-deformation additive, calcium sulfate hemihydrate, water and auxiliary additive
To form gypsum slurry；Plasterboard is formed by the gypsum slurry.
Wherein, the anti-deformation additive of calcium sulfate hemihydrate, 4.5wt% of 76wt% is included in the gypsum slurry, is based on
4.1% weight brushite of calcium sulfate hemihydrate, remaining ingredient are water and auxiliary additive；Wherein, the anti-deformation adds
Boric acid, the tartaric acid of 8wt% and the sodium isoascorbate of 50wt% that agent is added to include 42wt%；The auxiliary additive includes
The dispersant of the starch of 23wt%, the foaming agent of 35wt% and 42wt%.
Embodiment 2：
Grind brushite, mixing brushite, anti-deformation additive, calcium sulfate hemihydrate, water and auxiliary additive
To form gypsum slurry；Plasterboard is formed by the gypsum slurry.
Wherein, the anti-deformation additive of calcium sulfate hemihydrate, 4.5wt% of 76wt% is included in the gypsum slurry, is based on
5% weight brushite of calcium sulfate hemihydrate, remaining ingredient are water and auxiliary additive；Wherein, the anti-deformation addition
Agent includes boric acid, the tartaric acid of 12wt% and the sodium isoascorbate of 43wt% of 45wt%；The auxiliary additive includes
The dispersant of the starch of 26wt%, the foaming agent of 38wt% and 36wt%.
Embodiment 3：
Grind brushite, mixing brushite, anti-deformation additive, calcium sulfate hemihydrate, water and auxiliary additive
To form gypsum slurry；Plasterboard is formed by the gypsum slurry.
Wherein, the anti-deformation additive of calcium sulfate hemihydrate, 4.5wt% of 76wt% is included in the gypsum slurry, is based on
5.5% weight brushite of calcium sulfate hemihydrate, remaining ingredient are water and auxiliary additive；Wherein, the anti-deformation adds
Boric acid, the tartaric acid of 9wt% and the sodium isoascorbate of 48wt% that agent is added to include 43wt%；The auxiliary additive includes
The dispersant of the starch of 24wt%, the foaming agent of 36wt% and 38wt%.
Embodiment 4：
Grind brushite, mixing brushite, anti-deformation additive, calcium sulfate hemihydrate, water and auxiliary additive
To form gypsum slurry；Plasterboard is formed by the gypsum slurry.
Wherein, the anti-deformation additive of calcium sulfate hemihydrate, 4.5wt% of 76wt% is included in the gypsum slurry, is based on
3.5% weight brushite of calcium sulfate hemihydrate, remaining ingredient are water and auxiliary additive；Wherein, the anti-deformation adds
Boric acid, the tartaric acid of 10wt% and the sodium isoascorbate of 46wt% that agent is added to include 44wt%；The auxiliary additive includes
The dispersant of the starch of 24wt%, the foaming agent of 36wt% and 40wt%.
Embodiment 5：
Grind brushite, mixing brushite, anti-deformation additive, calcium sulfate hemihydrate, water and auxiliary additive
To form gypsum slurry；Plasterboard is formed by the gypsum slurry.
Wherein, the anti-deformation additive of calcium sulfate hemihydrate, 6.5wt% of 76wt% is included in the gypsum slurry, is based on
4.1% weight brushite of calcium sulfate hemihydrate, remaining ingredient are water and auxiliary additive；Wherein, the anti-deformation adds
Boric acid, the tartaric acid of 8.9wt% and the sodium isoascorbate of 49.5wt% that agent is added to include 42.6wt%；The auxiliary additive
The foaming agent of starch, 35.3wt% and the dispersant of 41.3wt% including 23.4wt%.
Embodiment 6：
Grind brushite, mixing brushite, anti-deformation additive, calcium sulfate hemihydrate, water and auxiliary additive
To form gypsum slurry；Plasterboard is formed by the gypsum slurry.
Wherein, the anti-deformation additive of calcium sulfate hemihydrate, 2.5wt% of 76wt% is included in the gypsum slurry, is based on
4.1% weight brushite of calcium sulfate hemihydrate, remaining ingredient are water and auxiliary additive；Wherein, the anti-deformation adds
Boric acid, the tartaric acid of 9.3wt% and the sodium isoascorbate of 46wt% that agent is added to include 43.7wt%；The auxiliary additive packet
Include the dispersant of the starch of 24.2wt%, the foaming agent of 36.3wt% and 39.5wt%.
Embodiment 7：
Sodium isoascorbate, calcium sulfate hemihydrate, anti-deformation additive, water and auxiliary additive are mixed to form gypsum
Slurry；Plasterboard is formed by the gypsum slurry.
Wherein, the anti-deformation additive of calcium sulfate hemihydrate, 4.5wt% of 76wt% is included in the gypsum slurry, remaining
Ingredient is water and auxiliary additive；Wherein, the anti-deformation additive includes the winestone of the boric acid of 44.4wt%, 11.4wt%
The sodium isoascorbate of acid and 44.2wt%；The auxiliary additive includes the foaming agent of the starch of 25.2wt%, 37.3wt%
And the dispersant of 37.5wt%.
Embodiment 8：
Grind brushite, mixing brushite, anti-deformation additive, calcium sulfate hemihydrate, water and auxiliary additive
To form gypsum slurry；Plasterboard is formed by the gypsum slurry.
Wherein, the anti-deformation additive of calcium sulfate hemihydrate, 4.5wt% of 76wt% is included in the gypsum slurry, is based on
4.1% weight brushite of calcium sulfate hemihydrate, remaining ingredient are water and auxiliary additive；Wherein, the anti-deformation adds
The tartaric acid and 46.4% sodium isoascorbate that agent is added to include the boric acid of 43.1wt%, 10.5wt%；The auxiliary additive
Include the dispersant of 23.2% starch, the foaming agent of 37.6wt% and 39.2wt%.
Embodiment 9：
Grind brushite, mixing brushite, anti-deformation additive, calcium sulfate hemihydrate, water and auxiliary additive
To form gypsum slurry；Plasterboard is formed by the gypsum slurry.
Wherein, the anti-deformation additive of calcium sulfate hemihydrate, 4.5wt% of 76wt% is included in the gypsum slurry, is based on
4.1% weight brushite of calcium sulfate hemihydrate, remaining ingredient are water and auxiliary additive；Wherein, the anti-deformation adds
Boric acid, the tartaric acid of 11.2wt% and the sodium isoascorbate of 44.1wt% that agent is added to include 44.7wt%；The auxiliary addition
Agent includes the foaming agent and 38.5% dispersant of the starch of 24.3wt%, 37.2wt%.
Sag resistance testing example：
Test environment：20 ± 0.5 DEG C of constant temperature；Relative humidity：93 ± 3%RH.
It is lain in a horizontal plane on two supporters by the embodiment 1-10 plasterboards prepared, the distance between two supporters are
Half meter.Place one kilogram of bearing block in the central part of plasterboard, test using laser displacement gauge and after recording 24 hours respectively
The sagging data of block gypsum plate sample central part, it is as a result as follows：
| Embodiment | Sagging value/mm |
| Embodiment 1 | 0.13 |
| Embodiment 2 | 0.17 |
| Embodiment 3 | 0.31 |
| Embodiment 4 | 0.36 |
| Embodiment 5 | 0.33 |
| Embodiment 6 | 0.35 |
| Embodiment 7 | 1.23 |
| Embodiment 8 | 1.11 |
| Embodiment 9 | 0.15 |
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made all within the spirits and principles of the present invention etc., should all include
Within protection scope of the present invention.
Claims (7)
1. a kind of gypsum slurry, which is characterized in that by weight percentage, 74wt%~77wt% is included in the gypsum slurry
Calcium sulfate hemihydrate, the anti-deformation additives of 4wt%~5wt%, based on the saturating of 3.9%~4.5% weight of calcium sulfate hemihydrate
Epiglaubite, remaining ingredient are water and auxiliary additive.
2. gypsum slurry according to claim 1, which is characterized in that the anti-deformation additive for boric acid, gallic acid,
One or more of tartaric acid and sodium isoascorbate.
3. gypsum slurry according to claim 2, which is characterized in that the anti-deformation additive for boric acid, tartaric acid and
The mixture of sodium isoascorbate, wherein, by weight percentage, the anti-deformation additive includes 42wt%~45wt%'s
The sodium isoascorbate of boric acid, the tartaric acid of 8wt%~12wt% and 43wt%~50wt%.
4. gypsum slurry according to claim 1, which is characterized in that the auxiliary additive is selected from starch, foaming agent, divides
The one or more of powder.
5. gypsum slurry according to claim 1, which is characterized in that the auxiliary additive is starch, foaming agent and divides
The mixture of powder, wherein, by weight percentage, starch of the auxiliary additive including 23wt%~26wt%,
The foaming agent of 35wt%~38wt% and the dispersant of 36wt%~42wt%.
6. a kind of anti-deformation plastering, which is characterized in that the plastering is by the gypsum slurry system of claim 1 or 5
.
7. the preparation method of anti-deformation plastering according to claim 6, which is characterized in that the preparation method step is such as
Under：Brushite is ground, mixes brushite, anti-deformation additive, calcium sulfate hemihydrate, water and auxiliary additive to be formed
Gypsum slurry；Plastering is formed by the gypsum slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711452463.1A CN108129118A (en) | 2017-12-28 | 2017-12-28 | A kind of gypsum slurry and the anti-deformation plastering prepared by the gypsum slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711452463.1A CN108129118A (en) | 2017-12-28 | 2017-12-28 | A kind of gypsum slurry and the anti-deformation plastering prepared by the gypsum slurry |
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| Publication Number | Publication Date |
|---|---|
| CN108129118A true CN108129118A (en) | 2018-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711452463.1A Pending CN108129118A (en) | 2017-12-28 | 2017-12-28 | A kind of gypsum slurry and the anti-deformation plastering prepared by the gypsum slurry |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1226333A (en) * | 1967-03-22 | 1971-03-24 | ||
| GB1481788A (en) * | 1973-10-25 | 1977-08-03 | Bpb Industries Ltd | Production of shaped gypsum articles |
| CN101747014A (en) * | 2008-12-18 | 2010-06-23 | 北新集团建材股份有限公司 | Anti-sagging plasterboard and method for producing same |
| CN103974921A (en) * | 2012-12-03 | 2014-08-06 | 圣戈班石膏板公司 | Chemical additive for gypsum products |
| CN104039736A (en) * | 2012-12-03 | 2014-09-10 | 圣戈班石膏板公司 | Anti-sagging gypsum product and a method to manufacture |
| CN103402944B (en) * | 2010-12-22 | 2016-10-26 | 美国石膏公司 | Coagulant for Gypsum Fibrosum hydration |
-
2017
- 2017-12-28 CN CN201711452463.1A patent/CN108129118A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1226333A (en) * | 1967-03-22 | 1971-03-24 | ||
| GB1481788A (en) * | 1973-10-25 | 1977-08-03 | Bpb Industries Ltd | Production of shaped gypsum articles |
| CN101747014A (en) * | 2008-12-18 | 2010-06-23 | 北新集团建材股份有限公司 | Anti-sagging plasterboard and method for producing same |
| CN103402944B (en) * | 2010-12-22 | 2016-10-26 | 美国石膏公司 | Coagulant for Gypsum Fibrosum hydration |
| CN103974921A (en) * | 2012-12-03 | 2014-08-06 | 圣戈班石膏板公司 | Chemical additive for gypsum products |
| CN104039736A (en) * | 2012-12-03 | 2014-09-10 | 圣戈班石膏板公司 | Anti-sagging gypsum product and a method to manufacture |
Non-Patent Citations (1)
| Title |
|---|
| 赵云龙等编著: "《石膏干混建材生产及应用技术》", 30 November 2016, 第189-190页"抗徐变剂" * |
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