CN102712535A - Gypsum board - Google Patents
Gypsum board Download PDFInfo
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- CN102712535A CN102712535A CN200980162305XA CN200980162305A CN102712535A CN 102712535 A CN102712535 A CN 102712535A CN 200980162305X A CN200980162305X A CN 200980162305XA CN 200980162305 A CN200980162305 A CN 200980162305A CN 102712535 A CN102712535 A CN 102712535A
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- Prior art keywords
- gypsum
- slurry
- plasterboard
- paris
- plaster
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- 239000010440 gypsum Substances 0.000 title claims abstract description 61
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 61
- 239000002002 slurry Substances 0.000 claims abstract description 42
- 239000004568 cement Substances 0.000 claims abstract description 24
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 44
- 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 44
- 239000011507 gypsum plaster Substances 0.000 claims description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000011398 Portland cement Substances 0.000 claims description 19
- 208000034189 Sclerosis Diseases 0.000 claims description 10
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 159000000003 magnesium salts Chemical class 0.000 claims description 4
- 239000001103 potassium chloride Substances 0.000 claims description 4
- 235000011164 potassium chloride Nutrition 0.000 claims description 4
- 159000000000 sodium salts Chemical class 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 abstract description 19
- 238000005452 bending Methods 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 10
- 239000012535 impurity Substances 0.000 abstract description 8
- 238000011049 filling Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 24
- 239000002994 raw material Substances 0.000 description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 241001558929 Sclerotium <basidiomycota> Species 0.000 description 7
- 238000006477 desulfuration reaction Methods 0.000 description 7
- 230000023556 desulfurization Effects 0.000 description 7
- 239000003546 flue gas Substances 0.000 description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- UGTZMIPZNRIWHX-UHFFFAOYSA-K sodium trimetaphosphate Chemical compound [Na+].[Na+].[Na+].[O-]P1(=O)OP([O-])(=O)OP([O-])(=O)O1 UGTZMIPZNRIWHX-UHFFFAOYSA-K 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 229940079593 drug Drugs 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- JZCCFEFSEZPSOG-UHFFFAOYSA-L copper(II) sulfate pentahydrate Chemical compound O.O.O.O.O.[Cu+2].[O-]S([O-])(=O)=O JZCCFEFSEZPSOG-UHFFFAOYSA-L 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000003469 silicate cement Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011400 blast furnace cement Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000010458 rotten stone Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
Images
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
- 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
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
Provided is a gypsum board which can sufficiently suppress bending, even when produced using a starting gypsum material that contains a large amount of water-soluble salts as impurities. Further, the gypsum board is unproblematic in compressive strength, hardening time, pH, and so on. A gypsum board produced by filling a gypsum-containing slurry into a frame mold and hardening the slurry, wherein the slurry contains both calcined gypsum and 0.2 to 5.0 parts by mass of a cement per 100 parts by mass of the calcined gypsum.
Description
Technical field
The present invention relates to plasterboard, more detailed, even when relating to the high gypsum of the content that in the modulation of wanting the hardened slurry, uses the water dissolvable salt that is equivalent to impurity, also can fully prevent the plasterboard of bending.
Background technology
In the past, generally through holding concurrently to the surface of the downside of template filling the slurry that contains gypsum between with body paper, and conveying continuously under this state with the back side of body paper and upside, the while during carry out the sclerosis of slurry and the cut-out of sclerotium, thereby the manufacturing plasterboard.The slurry that contains gypsum mixes with each required amount of various mixing materials or drug class and water through the plaster of Paris (semi-hydrated gypsum) that the raw material gypsum calcination is got to be modulated; As the raw material gypsum; Except the plaster of paris; Can use various chemical gypsums, for example phosphoric acid gypsum, flue gas desulfurization gypsum, titanium gypsum (gypsum of by-product when making titanium oxide), hydrofluoric acid gypsum (gypsum of by-product when making hydrofluoric acid), salt manufacturing gypsum, refining gypsum etc.Yet; The plasterboard that gets through said common in the past method of manufacture; Moisture absorption is arranged and water ratio is uprised thereby easily crooked problem, especially when using the high gypsum of the water dissolvable salt content that is equivalent to impurity as the raw material gypsum, the plasterboard that obtains has the problem of serious bending.
As preventing the crooked plasterboard that produces, known in wanting the hardened slurry instance (for example the referenced patent document 1) and the phosphatic instance of coupling aggegation (for example the referenced patent document 2) etc. of this type of coupling copper sulfate crystallization modifier.Yet patent documentation 1 such instance in the past has can't fully prevent the crooked problem that produces, and patent documentation 2 such instances in the past have price height and worry to become the problem of environmental pollution reason in addition.
As the plasterboard of giving resistivity against fire and water-repellancy in addition, also known in wanting the hardened slurry instance (for example the referenced patent document 3) of coupling cement.Patent documentation 3 such instances in the past do, use a large amount of cement with gypsum, are specially the cement about 20～40%.Yet this had the intensity of the plasterboard that obtains in the past in instance for example compressive strength was low, slurry hardens significantly high problem of length consuming time, pH.
The prior art document
Patent documentation
No. the 2007/110428th, [patent documentation 1] International Publication
[patent documentation 2] Japan special table 2001-504795 communique
[patent documentation 3] japanese kokai publication sho 61-83664 communique
Summary of the invention
Invent problem to be solved
The problem that the present invention will solve is to provide plasterboard; When even it is equivalent to the high gypsum of the water dissolvable salt content of impurity as raw material in use; Can fully prevent crooked generation, and aspects such as compressive strength, setting time, pH do not have problems yet.
The means of dealing with problems
The plasterboard that slurry that address the above problem the present invention relates in template to fill contained gypsum and sclerosis form; It is characterized by, the plaster of Paris that said plasterboard is got by per 100 mass parts calcined gypsums uses the slurry sclerosis of the cement of 0.2～5.0 mass parts ratio to form.
The plasterboard that the present invention relates to is the plasterboard that is prepared as follows: the plaster of Paris (semi-hydrated gypsum) that per 100 mass parts calcined gypsums get uses the cement of 0.2～5.0 mass parts ratio; Suitably use various mixing materials or drug class in addition as required; Through being mixed with water, they modulate slurry; Said slurry is filled in the template, for example holds concurrently to the surface of template with body paper and the back side with between the body paper, and harden.
In the plasterboard that the present invention relates to, as gypsum,, can use various chemical gypsums, for example phosphoric acid gypsum, flue gas desulfurization gypsum, titanium gypsum, hydrofluoric acid gypsum, salt manufacturing gypsum, refining gypsum etc. except the plaster of paris.According to kind and the amount and the proterties at that time etc. of the chemical gypsum that uses, the content (concentration) that the gypsum that is used for modulating slurry is equivalent to the water dissolvable salt of impurity changes.In addition,,, can use blast furnace cement, pulverized fuel ash cement, tripoli cement, luminite cement etc., preferred silicate cement, more preferably ordinary Portland cement except various silicate cements as cement.Further,, paper pulp, spun glass, vermiculite etc. can be suitably used,, hardening accelerator, inhibitor, water reducer etc. can be suitably used in addition as drug class as mixture.
The plasterboard that the present invention relates to; As stated; The plaster of Paris that is got by per 100 mass parts calcined gypsums uses the slurry sclerosis of the cement of 0.2～5.0 mass parts ratio to form; Compare with the plasterboard in the past of use cement in the slurry modulation, have the remarkable low characteristic of cement usage quantity with respect to plaster of Paris.Its reason does; Per 100 mass parts plaster of Paris; During usage ratio less than 0.2 mass parts of cement; The plasterboard that obtains can't fully prevent crooked the generation, and the usage ratio of opposite cement is when surpassing 5.0 mass parts, and the compressive strength step-down of the plasterboard that obtains, sclerosis elongated, pH consuming time significantly uprises.
In the plasterboard that the slurry sclerosis of using cement and plaster of Paris jointly forms; For being compared with the situation of not using cement, compressive strength wants high; And it is consuming time shorter to harden, and pH also suppresses to no problem degree in addition, the hardened slurry to be necessary for the cement that per 100 mass parts plaster of Paris use 0.2～5.0 mass parts ratio; Preferably use the cement of 0.3～2.0 mass parts ratio, more preferably use the cement of 0.5～1.0 mass parts ratio.
The plasterboard that the present invention relates to; Compare with above-mentioned plasterboard in the past; Have and fully to prevent crooked generation; And the effect that aspects such as compressive strength, setting time, pH do not have problems can prevent the effect that the surface is peeled off easily because of moisture absorption with the body paper and the back side with body paper in addition in addition.Use calcining be equivalent to impurity the water dissolvable salt the high gypsum of content and plaster of Paris when being used to modulate the plaster of Paris of slurry, the performance of said effect is significant.Mainly result from kind and amount and proterties at that time etc. as the above-mentioned chemical gypsum of raw material gypsum; When the content of the water dissolvable salt that is equivalent to impurity in the raw material gypsum is uprised; Plaster of Paris modulation slurry that uses the such gypsum of calcining and get and hardened plasterboard become crooked easily; Particularly under high humidity, become crooked easily because of moisture absorption; Yet the present invention of the cement of coupling specified amount can fully prevent the generation of such bending during according to the said plaster of Paris of use in the slurry modulation.
Particularly, the plaster of Paris that uses in the slurry modulation adopts the total content of sylvite, sodium salt and the magnesium salts of water dissolvable to be scaled their oxide compound (K
2O, Na
2O and MgO) be the above gypsum of 500mg/kg, for example under the situation of gypsum of 500～2500mg/kg as raw material; The performance of above-mentioned effect of the present invention is significant, and wherein especially the total content of the sylvite of water dissolvable, sodium salt and the magnesium salts oxide compound that is scaled them is remarkable especially under the 600mg/kg situation above, for example 600～2500mg/kg.
The invention effect
According to the present invention, even when use is equivalent to the high gypsum of the water dissolvable salt content of impurity as raw material, the plasterboard that obtains also can fully prevent crooked generation, and aspects such as compressive strength, setting time, pH do not have problems.
The accompanying drawing summary
Fig. 1 is the addition of middle ordinary Portland cements such as illustration embodiments of the invention and the graphic representation of the relation of the compressive strength of the sclerotium that obtains.
Fig. 2 is the graphic representation of the water dissolvable salts contg in the gypsum that uses as raw material in the illustration embodiments of the invention etc. with the relation of the bending of the test film that cuts out from the plasterboard that obtains.
Embodiment
Below, for clear and definite formation of the present invention and effect and enumerate embodiment and comparative example, but the present invention is not limited by these embodiment.
Test classification 1
Comparative example 1
The oxide compound that the total content of sylvite, sodium salt and the magnesium salts of water dissolvable is scaled them is that the flue gas desulfurization gypsum of 632mg/kg (the following water dissolvable salt content 632mg/kg that only is called) is calcined, as plaster of Paris (semi-hydrated gypsum).In these plaster of Paris 200 mass parts,, modulate slurry with the mixed water of 170 mass parts.With this slurry be filled in the template and make its sclerosis after, carry out the demoulding, under 40 ℃, be dried to constant, obtain the plasterboard of 12.5mm * 900mm * 1820mm.Cut out the test film of 12.5mm * 150mm * 650mm from this plasterboard; This test film 2 points with span 600mm under 40 ℃ * 90%RH condition are supported; Every through the specified time; Bending with the span central authorities that produce on tester (デ ジ マ チ Star Network イ Application ジ ケ one タ that ミ Star ト ヨ society makes, trade(brand)name) the determination test sheet.The result gathers and is shown in table 1.
Comparative example 2～4
The aqueous solution 170 mass parts of copper sulfate pentahydrate of having dissolved the amount of the addition that becomes table 1 record except use replace likewise carrying out with comparative example 1 water 170 mass parts, at the modulation slurry and after obtaining plasterboard, cut out test film, measure crooked.The result gathers and is shown in table 1.
Comparative example 5～7
The aqueous solution 170 mass parts of Trisodium trimetaphosphate of having dissolved the amount of the addition that becomes table 1 record except use replace likewise carrying out with comparative example 1 water 170 mass parts, at the modulation slurry and after obtaining plasterboard, cut out test film, measure crooked.The result gathers and is shown in table 1.
Comparative example 8～11 and embodiment 1～7
Except material 200 mass parts of the ordinary Portland cement that uses the amount in plaster of Paris, mixed the addition that becomes table 1 record replace plaster of Paris 200 mass parts; Likewise carry out with comparative example 1; At the modulation slurry and after obtaining plasterboard, cut out test film, measure crooked.The result gathers and is shown in table 1.
Table 1
In the table 1,
Addition: the mass parts of the interpolation material of per 100 mass parts plaster of Paris
Also can be clear and definite from the result of table 1, copper sulfate pentahydrate can't fully prevent crooked generation.Although Trisodium trimetaphosphate can fully prevent crooked generation in addition, as stated, not only high price and worry become the reason of environmental pollution.In contrast; Per 100 mass parts plaster of Paris use the above ordinary Portland cement of 0.2 mass parts, the embodiment more than preferred 0.3 mass parts etc.; Then can likewise fully prevent crooked the generation when using Trisodium trimetaphosphate, and not produce problem such when using Trisodium trimetaphosphate.
Test classification 2
Comparative example 12
The flue gas desulfurization gypsum of water dissolvable salt content 632mg/kg is calcined, as plaster of Paris (semi-hydrated gypsum).Mixing water 375g in this plaster of Paris 500g, the modulation slurry.With this slurry be filled into the template of 50mm * 50mm * 50mm and make its sclerosis after, carry out the demoulding, under 40 ℃, be dried to constant, obtain sclerotium.This sclerotium is supplied with オ one ト グ ラ Off (society of Shimadzu Seisakusho Ltd. makes, trade(brand)name, model AG-10TE), carried out loading in 1mm/ minute with loading speed, the loading value when sclerotium is buckled is as compressive strength (N/mm
2).The result is shown in table 2 and Fig. 1.
Embodiment 8～14 and comparative example 13～15
Except the material 500g of the ordinary Portland cement that uses the amount in plaster of Paris, mixed the addition that becomes table 1 record replaces likewise carrying out with comparative example 12 the plaster of Paris 500g,, measure compressive strength at the modulation slurry and after obtaining plasterboard.The result is shown in table 2 and Fig. 1.
Table 2
In the table 2,
Addition: per 100 mass parts plaster of Paris add the mass parts of ordinary Portland cement
Also can be clear and definite from the result of table 2 and Fig. 1; Although per 100 mass parts plaster of Paris add the mass parts of ordinary Portland cement when 0.20～5.0 scope; Compare with the situation of not adding ordinary Portland cement (comparative example 12), compressive strength more than roughly the same degree, but in the mass parts of adding ordinary Portland cement than this more for a long time; For example be 10.0 when above, it is also lower than the situation of not adding ordinary Portland cement (comparative example 12) that compressive strength becomes.From the viewpoint of compressive strength, the mass parts that preferred per 100 mass parts plaster of Paris add ordinary Portland cement is 0.3～2.0.
Test classification 3
Comparative example 16
The flue gas desulfurization gypsum of water dissolvable salt content 632mg/kg is calcined, as plaster of Paris (semi-hydrated gypsum).Use this plaster of Paris modulation slurry, and use this slurry, below measure setting time (termination minute) according to JIS-R9112.In addition for the sclerotium that obtains, below measure pH according to JIS-R9102.The result gathers and is shown in table 3.
Embodiment 15 and comparative example 17～19
Except the material of the ordinary Portland cement that uses the amount in plaster of Paris, mixed the addition that becomes table 1 record replaces the plaster of Paris; Likewise carry out with comparative example 16; The modulation slurry, and measure setting time when obtaining sclerotium (termination minute) and pH.The result gathers and is shown in table 3.
Table 3
In the table 3,
Addition: per 100 mass parts plaster of Paris add the mass parts of ordinary Portland cement
Also can be clear and definite from the result of table 3, the mass parts increase of per 100 mass parts plaster of Paris being added ordinary Portland cement is 20～30 o'clock, compares with the situation of not adding ordinary Portland cement (comparative example 16), setting time is elongated, and pH significantly uprises.
Test classification 4
Comparative example 20
The plaster of paris of water dissolvable salt content 227mg/kg and the mixture of flue gas desulfurization gypsum are calcined, as plaster of Paris (semi-hydrated gypsum).Use this plaster of Paris, below likewise carry out,, cut out test film, measure through the bending after 48 hours at the modulation slurry and after obtaining plasterboard with the comparative example 1 of test classification 1.The result is shown in table 4 and Fig. 2.
Comparative example 21～31
Change the source (kind) and the blending ratio of flue gas desulfurization gypsum, the gypsum of the water dissolvable salt content of record in the table 4 is calcined, as plaster of Paris (semi-hydrated gypsum).Use these plaster of Paris, below likewise carry out,, cut out test film, measure through the bending after 48 hours at the modulation slurry and after obtaining plasterboard with comparative example 20.The result gathers and is shown in table 4 and Fig. 2.
Embodiment 16
The material of ordinary Portland cement that has mixed the amount of the addition that becomes table 4 record except use replaces likewise carrying out with comparative example 27 plaster of Paris, at the modulation slurry and after obtaining plasterboard, cuts out test film, measures through the bending after 48 hours.The result gathers and is shown in table 4 and Fig. 2.
Embodiment 17
The material of ordinary Portland cement that has mixed the amount of the addition that becomes table 4 record except use replaces likewise carrying out with comparative example 30 plaster of Paris, at the modulation slurry and after obtaining plasterboard, cuts out test film, measures through the bending after 48 hours.The result gathers and is shown in table 4 and Fig. 2.
Embodiment 18
The material of ordinary Portland cement that has mixed the amount of the addition that becomes table 4 record except use replaces likewise carrying out with comparative example 31 plaster of Paris, at the modulation slurry and after obtaining plasterboard, cuts out test film, measures through the bending after 48 hours.The result gathers and is shown in table 4 and Fig. 2.
Table 4
Also can be clear and definite from the result of table 4 and Fig. 2; Although it is big that the bending that produces when the solubility salt content in the gypsum that uses as raw material uprises becomes; Particularly to be that 500mg/kg is crooked when above become big to solubility salt content; But,, also can fully prevent crooked generation even when using solubility salt content is high like this gypsum as raw material according to the present invention.
Claims (4)
1. plasterboard, it is in template, to fill the plasterboard that the slurry that contains gypsum and sclerosis form, and it is characterized by: by per 100 mass parts calcined gypsums plaster of Paris use the slurry sclerosis of the cement of 0.2～5.0 mass parts ratio to form.
2. the described plasterboard of claim 1, wherein per 100 mass parts plaster of Paris use the cement of 0.3～2.0 mass parts ratio in the slurry.
3. claim 1 or 2 described plasterboards, the oxide compound that wherein total content of the sylvite of water dissolvable, sodium salt and magnesium salts is scaled them in the gypsum is more than the 500mg/kg.
4. the plasterboard described in each of claim 1～3, wherein cement is ordinary Portland cement.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2009/068465 WO2011052048A1 (en) | 2009-10-28 | 2009-10-28 | Gypsum board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102712535A true CN102712535A (en) | 2012-10-03 |
Family
ID=43921489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980162305XA Pending CN102712535A (en) | 2009-10-28 | 2009-10-28 | Gypsum board |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPWO2011052048A1 (en) |
| KR (1) | KR20120070543A (en) |
| CN (1) | CN102712535A (en) |
| WO (1) | WO2011052048A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105328943A (en) * | 2014-08-15 | 2016-02-17 | 北新集团建材股份有限公司 | Gypsum board capable of increasing resource energy utilization efficiency and production method thereof |
| WO2020224120A1 (en) * | 2019-05-08 | 2020-11-12 | 北新集团建材股份有限公司 | High impurity ion content desulfurized gypsum paper-faced gypsum board and manufacturing method therefor |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UA124000C2 (en) * | 2015-11-30 | 2021-07-07 | Кнауф Ґіпс Кґ | Additive for gypsum building materials |
| JP6341952B2 (en) * | 2016-04-14 | 2018-06-13 | チヨダウーテ株式会社 | Gypsum board and method for producing gypsum board |
| US11993054B2 (en) | 2019-11-05 | 2024-05-28 | United States Gypsum Company | Method of preparing gypsum wallboard from high salt gypsum, and related product |
| US11891336B2 (en) | 2019-11-22 | 2024-02-06 | United States Gypsum Company | Gypsum board containing high absorption paper and related methods |
| CN114349449B (en) * | 2021-11-23 | 2023-03-17 | 北新集团建材股份有限公司 | Paper-surface gypsum board and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS582189B2 (en) * | 1979-11-16 | 1983-01-14 | 川崎重工業株式会社 | Method for preventing efflorescence of hardened gypsum |
| JPH11116319A (en) * | 1997-10-07 | 1999-04-27 | Yoshino Gypsum Co Ltd | Gypsum-based building material having suppressed elution of heavy metal and its production |
-
2009
- 2009-10-28 JP JP2011538149A patent/JPWO2011052048A1/en active Pending
- 2009-10-28 CN CN200980162305XA patent/CN102712535A/en active Pending
- 2009-10-28 WO PCT/JP2009/068465 patent/WO2011052048A1/en active Application Filing
- 2009-10-28 KR KR1020117030182A patent/KR20120070543A/en not_active Application Discontinuation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105328943A (en) * | 2014-08-15 | 2016-02-17 | 北新集团建材股份有限公司 | Gypsum board capable of increasing resource energy utilization efficiency and production method thereof |
| CN105328943B (en) * | 2014-08-15 | 2018-08-14 | 北新集团建材股份有限公司 | A kind of plasterboard and its manufacturing method improving energy resource utilization ratio |
| WO2020224120A1 (en) * | 2019-05-08 | 2020-11-12 | 北新集团建材股份有限公司 | High impurity ion content desulfurized gypsum paper-faced gypsum board and manufacturing method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011052048A1 (en) | 2011-05-05 |
| KR20120070543A (en) | 2012-06-29 |
| JPWO2011052048A1 (en) | 2013-03-14 |
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