CN113429186A - Paper-surface gypsum board and preparation method thereof - Google Patents
Paper-surface gypsum board and preparation method thereof Download PDFInfo
- Publication number
- CN113429186A CN113429186A CN202110686706.8A CN202110686706A CN113429186A CN 113429186 A CN113429186 A CN 113429186A CN 202110686706 A CN202110686706 A CN 202110686706A CN 113429186 A CN113429186 A CN 113429186A
- Authority
- CN
- China
- Prior art keywords
- gypsum
- water
- paper
- ion
- plaster
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- C04B28/142—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 containing synthetic or waste calcium sulfate cements
- C04B28/144—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 containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
-
- 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
-
- 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
- C04B2111/40—Porous or lightweight materials
Abstract
A paper-surface gypsum board and a preparation method thereof are disclosed, wherein the preparation raw materials of the paper-surface gypsum board comprise: 100 parts of plaster of paris, 0.05-1 part of ion retarder, 0.2-1 part of binder, 0.01-0.5 part of foaming agent and 50-90 parts of water. The application provides a thistle board can adopt the gypsum raw materials preparation of high impurity ion to obtain, and surface density is low moreover, and intensity is high, and the adhesive property of mask paper and gypsum is good.
Description
Technical Field
The application relates to but is not limited to a gypsum board preparation technology, in particular to a paper-surface gypsum board and a preparation method thereof.
Background
The industrial by-product gypsum has large discharge amount and low utilization rate in China, and the main reasons are that the quality of the industrial by-product gypsum is unstable and the industrial by-product gypsum contains a large amount of impurity ions. Phosphate fertilizer5 tons of phosphogypsum are discharged from each 1 ton of products produced in the industry, a large amount of stacked byproduct gypsum not only occupies the land but also pollutes the environment, and the phosphogypsum contains H2PO4 -、HPO4 2-、PO4 3-、F-、Mg2+、K+、Na+And plasma impurity ions. The wet desulfurization of the coal-fired flue gas of the thermal power plant generates desulfurized gypsum which comprises Cl and main components of calcium sulfate dihydrate-、Mg2 +、Na+、K+And plasma impurity ions. These impurity ions affect not only the dehydration calcination of the desulfurized gypsum, but also the properties of the desulfurized gypsum and gypsum panels made using the desulfurized gypsum. Wherein, excessive chloride ions can bring quality problems of infirm bonding, expansion, reduced strength and the like to the gypsum product; under the humid condition, the water-soluble salt of chloride ion absorbs moisture and crystallizes, which can affect the bonding of the protective paper and the board core of the gypsum plaster board, and further affect the product quality of the gypsum plaster board.
There are many methods for removing impurity ions, including ion exchange, solidification, complexation, and the like. However, ions that cannot form insoluble substances are difficult to remove. Therefore, it is still a problem to be solved how to eliminate the influence of the ions which cannot form insoluble substances in the industrial by-product gypsum on the gypsum product.
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 gypsum plaster board and a preparation method thereof, the gypsum plaster board has low surface density, but high strength of the board, and good bonding performance of the protective paper and the gypsum.
Specifically, this application provides a thistle board, thistle board's preparation raw materials includes:
in an embodiment of the present application, the ion retarder may be selected from any one or more of polyvinyl alcohol, carboxymethyl cellulose, polyacrylamide, sodium alginate, and vinyl acetate-ethylene copolymer emulsion.
In an embodiment of the present application, the plaster of paris may be clinker of industrial by-product gypsum.
Optionally, the plaster of paris is any one or two of desulfurized gypsum clinker and phosphogypsum clinker.
In an embodiment of the present application, CaSO is in the plaster of paris4·1/2H2The content of O may be 60% by mass or more.
Optionally, CaSO in the plaster of Paris4·1/2H2The content of O is more than or equal to 80 mass percent.
In embodiments of the present application, the binder may be a modified starch.
Optionally, the binder is selected from any one or more of modified corn starch, modified tapioca starch and pregelatinized starch.
In the embodiment of the present application, the foaming agent may be selected from any one or more of sodium dodecylbenzene sulfonate, sodium fatty alcohol-polyoxyethylene ether sulfate and animal and vegetable protein foaming agents.
The application also provides a preparation method of the paper-surface gypsum board, which comprises the following steps:
mixing the calcined gypsum with the binder to obtain a dry mixed material;
dividing the water into a first portion of water, a second portion of water and a third portion of water;
mixing the ion retarder with the second portion of water to obtain an ion retarder solution;
mixing the foaming agent, the compressed air and the third part of water, and then foaming to obtain a foaming solution;
mixing the dry mixture, the ion retarder solution, the foaming solution and the first part of water to obtain slurry;
and attaching protective paper to the upper surface and the lower surface of the slurry, forming and drying to obtain the gypsum plaster board.
In embodiments of the present application, the weight ratio of the ion blocker to the second portion of water may be 1: 5-25.
In embodiments herein, the weight ratio of the blowing agent to the third portion of water may be from 1:50 to 150.
In an embodiment of the present application, the pressure of the compressed air may be 0.2 to 0.5 MPa.
The paper-surface gypsum board can be prepared into a low-surface-density and high-strength paper-surface gypsum board by adopting gypsum with high impurity ion content, and the prepared paper-surface gypsum board has good bonding performance between the protective paper and the board core; in addition, the ion retarder can be introduced into the paper-surface gypsum board by adopting a wet mixing and adding mode, the migration of impurity ions to the surface layer of the paper-surface gypsum board is effectively inhibited, and the preparation flow of the paper-surface gypsum board is not increased.
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 combinations particularly pointed out in the specification and the drawings.
Drawings
The accompanying drawings are included to provide an understanding of the present disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the examples serve to explain the principles of the disclosure and not to limit the disclosure.
FIG. 1 is a graph showing the concentration distribution of chloride ions in four samples of different levels of a test block and a blank block;
FIG. 2 is a graph comparing the calculation and detection results of the chloride ion concentration in four different levels of samples of the test block and the blank block and another 40mm long sample.
Detailed Description
To make the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail below with reference to the accompanying drawings. 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.
Embodiments of the present application provide a paper-faced gypsum board,
the preparation raw materials of the paper-surface gypsum board comprise:
in an embodiment of the present application, the ion retarder may be selected from any one or more of polyvinyl alcohol, carboxymethyl cellulose, polyacrylamide, sodium alginate, and vinyl acetate-ethylene copolymer emulsion.
In an embodiment of the present application, the plaster of paris may be clinker of industrial by-product gypsum.
Optionally, the plaster of paris is any one or two of desulfurized gypsum clinker and phosphogypsum clinker.
In an embodiment of the present application, CaSO is in the plaster of paris4·1/2H2The content of O may be 60% by mass or more.
Optionally, CaSO in the plaster of Paris4·1/2H2The content of O is more than or equal to 80 mass percent.
In embodiments of the present application, the binder may be a modified starch.
Optionally, the binder is selected from any one or more of modified corn starch, modified tapioca starch and pregelatinized starch.
In the embodiment of the present application, the foaming agent may be selected from any one or more of sodium dodecylbenzene sulfonate, sodium fatty alcohol-polyoxyethylene ether sulfate and animal and vegetable protein foaming agents.
It is to be understood that the raw materials for making the gypsum plasterboard of the present application may include, in addition to the plaster, the ion retardant, the binder, the foaming agent and the water, additives commonly used in the art for gypsum plasterboard, such as set accelerators, water reducers and the like.
The thickness of the paper-faced gypsum board can be 9.5mm or 12mm and the like.
Embodiments of the present application also provide a method for preparing the gypsum plasterboard, which includes:
mixing the calcined gypsum with the binder to obtain a dry mixed material;
dividing the water into a first portion of water, a second portion of water and a third portion of water;
mixing the ion retarder with the second portion of water to obtain an ion retarder solution;
mixing the foaming agent, the compressed air and the third part of water, and then foaming to obtain a foaming solution;
mixing the dry mixture, the ion retarder solution, the foaming solution and the first part of water to obtain slurry;
and attaching protective paper to the upper surface and the lower surface of the slurry, forming and drying to obtain the gypsum plaster board.
In embodiments of the present application, the weight ratio of the ion blocker to the second portion of water may be 1: 5-25.
In embodiments herein, the weight ratio of the blowing agent to the third portion of water may be from 1:50 to 150.
In an embodiment of the present application, the pressure of the compressed air may be 0.2 to 0.5 MPa.
The paper-surface gypsum board can be prepared into a low-surface-density and high-strength paper-surface gypsum board by adopting gypsum with high impurity ion content, and the prepared paper-surface gypsum board has good bonding performance between the protective paper and the board core; in addition, the ion retarder can be introduced into the paper-surface gypsum board by adopting a wet mixing and adding mode, the migration of impurity ions to the surface layer of the paper-surface gypsum board is effectively inhibited, and the preparation flow of the paper-surface gypsum board is not increased.
Examples and comparative examples
The raw material sources are as follows:
calcined gypsum: desulfurized building gypsum clinker, north new building materials (shanxi) ltd;
and (4) protecting the surface paper: shandong Bohui paper industry Co., Ltd; 180g/m2；
Ion blocking agent: polyvinyl alcohol, shanghai minister and promoter chemical technology ltd;
adhesive: modified corn starch or pregelatinized starch, Shenyang Xuehong Adhesives science and technology Co., Ltd; foaming agent: sodium dodecylbenzenesulfonate, Tooming, Co.Ltd.
The content of water-soluble impurity ions in the desulfurized gypsum building clinker is shown in table 1.
TABLE 1 content of water-soluble impurity ions in desulfurized gypsum clinker for construction
The raw materials for the preparation of the paper-faced gypsum boards of the examples and comparative examples are shown in tables 2 and 3, respectively.
TABLE 2 preparation of paper-faced gypsum board and its addition
Table 3 comparative example preparation of raw material and addition amount of gypsum plaster board
Note: "/" indicates no addition.
The preparation process of the paper-surface gypsum board comprises (the step (2) and/or the step (3) are removed in the comparative example):
(1) uniformly mixing the desulfurized building gypsum clinker with the binder according to the raw materials and the addition amounts in the tables 2 and 3 to obtain a mixed dry material;
(2) uniformly mixing the ion retarder and the second part of water according to the raw materials and the addition amount in the tables 2 and 3 to obtain an ion retarder solution;
(3) mixing a foaming agent, 0.2-0.5MPa compressed air and third water according to the raw materials and the addition amount in the tables 2 and 3, and then foaming to obtain a foaming solution;
(4) adding the mixed dry material obtained in the step (1) and the ion retarder solution obtained in the step (2) into the first part of water, and uniformly stirring to obtain slurry;
(5) adding the slurry obtained in the step (4) into the foaming solution obtained in the step (3) to form slurry containing foam holes; and
(6) pouring the slurry with the foam holes obtained in the step (5) onto a lower protective paper, attaching a protective paper on the upper surface, forming, drying at 160 ℃ for 30min, drying at 110 ℃ for 90min, and drying at 45 ℃ to constant weight to obtain the gypsum plaster board with the thickness of 9.5 mm.
Performance detection
1. Performance of paper-faced gypsum board
The gypsum boards prepared in the examples and the comparative examples are tested according to the Chinese national standard GB/T9775-. The wet and hot bonding performance test adopts a detection mode that a cross knife cuts the paper-faced gypsum board after steam heating, a water bath pot is set to be 100 ℃, when the temperature reaches 98 ℃, the gypsum board is placed on a support of the water bath pot, steam heating is carried out for 10min, after the gypsum board is taken out of the water bath pot, two knives are cut on the gypsum board by a wallpaper knife in a staggered mode, the top end of a triangle is lifted and torn upwards, and the bonding condition of the protective paper and the gypsum is checked. The results are shown in Table 4.
TABLE 4 mechanical and adhesive Properties of the thistle board
Note: the adhesive properties are classified into 5 types, i type: the paper boards are firmly bonded and are not separated after being lifted; and II: a small part is separated, and a large part is intact; class III: half of the adhesive is firmly adhered, and the other half of the adhesive is separated; and IV: most of the materials are separated, and only a small part of the materials are firmly adhered; and V, type: the cardboard is totally separated.
As can be seen from Table 4, the paper-faced gypsum boards of examples 1-3 and comparative example 3, which have a lower areal density due to the addition of the foaming agent; the gypsum plaster boards of comparative examples 1-2 have higher areal density because no foaming agent is added, and although the strength of the gypsum plaster boards can meet the requirements of the Chinese national standard GB/T9775-.
The gypsum plasterboards of the examples and the comparative example 3 belong to low-density gypsum boards, but the gypsum plasterboard of the comparative example 3 is not added with an ion retarder, so that the bonding performance of the gypsum plasterboard is poor, and the strength of the gypsum plasterboard cannot meet the requirements of Chinese national standard GB/T9775-; the ion retarder is added into the paper-faced gypsum board in the embodiment, the bonding property and the strength of the paper-faced gypsum board are obviously superior to those of the paper-faced gypsum board in the comparative example 3, and the addition of the ion retarder is proved to improve the bonding property and the strength of the paper-faced gypsum board.
2. Retarding effect of chloride ion
While not wishing to be bound by theory, the inventors believe that the strength and bonding properties of the gypsum plasterboard can be improved by the addition of the ion retarder because the ion retarder inhibits the foreign ions in the desulfurized building gypsum from migrating outward.
In order to verify that the ion retarder can inhibit chloride ions from migrating outwards, test blocks with the length multiplied by the width multiplied by the height multiplied by 160mm multiplied by 40mm are prepared, and the desulfurized building gypsum clinker is 1000g, wherein the concentration of the chloride ions is 600 ppm; 5g of ion retarder polyvinyl alcohol is added into the desulfurized building gypsum clinker of the test block, and no ion retarder is added into the blank test block.
Detecting the content of chloride ions in each sample: drying the test block at 45 ℃, then taking two sections of samples with the length of 40mm from the middle section of the test block, scraping the periphery of the surface layer of one section of the sample by a knife to be 2mm thick, taking 10g of the sample from the scraped surface layer, marking the sample as an outer sample, scraping the periphery of the surface layer to be 3mm thick, taking 10g of the sample from the scraped surface layer, marking the sample as a secondary outer sample, scraping the periphery of the surface layer to be 5mm thick, taking 10g of the sample from the scraped surface layer, marking the sample as a secondary inner sample, and taking 10g of the sample from the rest of the core of the test block, and marking the sample as a core sample. According to the Chinese building material industry standard JC/T2074-2011 flue gas desulfurization gypsum, the content of chloride ions in four different layers of samples of a test block and a blank block and the total content of chlorine in another section of sample with the length of 40mm are detected.
FIG. 1 is a graph showing the concentration distribution of chloride ions in four samples of different levels of a test block and a blank block; wherein, blank represents blank test block, and ion retarder represents test block added with ion retarder.
When the gypsum is dried, the water is evaporated, and the chloride ions migrate outwards, so that the concentration of the chloride ions on the surface layer is the highest and is consistent with the change trend of the chloride ion concentrations in four different-level samples of the blank test block. However, because the polyvinyl alcohol is doped in the test sample block, the content of chloride ions on the surface layer (outer sample) of the sample is obviously reduced, and the concentrations of chloride ions in the second layer (secondary outer sample), the third layer (secondary inner sample) and the block core (core sample) are higher, which also shows that the admixture can effectively inhibit the chloride ions from migrating to the outer layer and has a retarding effect on the chloride ions.
FIG. 2 is a graph comparing the calculation and detection results of the chloride ion concentration in four different levels of samples of the test block and the blank block and another sample with a length of 40 mm; wherein, the calculation represents the average value of the chloride ion concentration in the samples of four different levels of the test block, the detection represents the detection value of the chloride ion concentration in another sample of 40mm length of the test block, the blank represents the blank test block, and the ion retarder represents the test block added with the ion retarder.
As can be seen from FIG. 2, whether the test block is a blank test block or a test block added with an ion retarder, the average value of the chloride ion concentration in four different level samples is very close to the detection value of the chloride ion concentration in another 40mm long sample, which indicates that the polyvinyl alcohol serving as the ion retarder can inhibit the outward migration of chloride ions, but does not cure the chloride ions.
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. A paper-surface gypsum board is prepared from the following raw materials:
2. the gypsum plasterboard of claim 1, wherein the ion retardant is selected from any one or more of polyvinyl alcohol, carboxymethyl cellulose, polyacrylamide, sodium alginate and vinyl acetate-ethylene copolymer emulsion.
3. The paper-faced gypsum board of claim 1, wherein the plaster of paris is a clinker of industrial by-product gypsum; optionally, the plaster of paris is any one or two of desulfurized gypsum clinker and phosphogypsum clinker.
4. The gypsum plaster board of claim 3, wherein CaSO is present in the plaster4·1/2H2The content of O is more than or equal to 60 percent by mass; optionally, CaSO in the plaster of Paris4·1/2H2The content of O is more than or equal to 80 mass percent.
5. The gypsum plasterboard of claim 1, wherein the binder is a modified starch; optionally, the binder is selected from any one or more of modified corn starch, modified tapioca starch and pregelatinized starch.
6. The gypsum plasterboard of claim 1, wherein the foaming agent is selected from any one or more of sodium dodecylbenzene sulfonate, sodium fatty alcohol-polyoxyethylene ether sulfate and animal and vegetable protein foaming agents.
7. A method of making the paper-faced gypsum board of any one of claims 1-6, the method of making comprising:
mixing the calcined gypsum with the binder to obtain a dry mixed material;
dividing the water into a first portion of water, a second portion of water and a third portion of water;
mixing the ion retarder with the second portion of water to obtain an ion retarder solution;
mixing the foaming agent, the compressed air and the third part of water, and then foaming to obtain a foaming solution;
mixing the dry mixture, the ion retarder solution, the foaming solution and the first part of water to obtain slurry;
and attaching protective paper to the upper surface and the lower surface of the slurry, forming and drying to obtain the gypsum plaster board.
8. The method of claim 7, wherein the weight ratio of the ion retarder to the second portion of water is 1: 5-25.
9. The production method according to claim 7, wherein the weight ratio of the foaming agent to the third portion of water is 1:50 to 150.
10. The production method according to claim 8 or 9, wherein the pressure of the compressed air is 0.2 to 0.5 MPa.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110686706.8A CN113429186A (en) | 2021-06-21 | 2021-06-21 | Paper-surface gypsum board and preparation method thereof |
| PCT/CN2022/096638 WO2022267848A1 (en) | 2021-06-21 | 2022-06-01 | Lightweight high-strength paperbacked gypsum board and preparation method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110686706.8A CN113429186A (en) | 2021-06-21 | 2021-06-21 | Paper-surface gypsum board and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113429186A true CN113429186A (en) | 2021-09-24 |
Family
ID=77756700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110686706.8A Pending CN113429186A (en) | 2021-06-21 | 2021-06-21 | Paper-surface gypsum board and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113429186A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115432985A (en) * | 2022-09-21 | 2022-12-06 | 中建材创新科技研究院有限公司 | Light anti-deflection paper-surface gypsum board and preparation method thereof |
| CN115448678A (en) * | 2022-09-21 | 2022-12-09 | 中建材创新科技研究院有限公司 | Light anti-deflection paper-surface gypsum board and preparation method thereof |
| WO2022267848A1 (en) * | 2021-06-21 | 2022-12-29 | 北新集团建材股份有限公司 | Lightweight high-strength paperbacked gypsum board and preparation method therefor |
| CN115806424A (en) * | 2022-03-16 | 2023-03-17 | 安徽海雪新材料科技有限公司 | Low-starch paper-surface gypsum board |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3719513A (en) * | 1971-03-10 | 1973-03-06 | Grace W R & Co | Sprayable gypsum plaster composition |
| FR3018220A1 (en) * | 2014-03-07 | 2015-09-11 | Saint Gobain Placo | ACOUSTIC PLATE BASED ON PLASTER. |
| CN110015906A (en) * | 2018-01-08 | 2019-07-16 | 北新集团建材股份有限公司 | A kind of low density paper surface gypsum board and its preparation process |
| CN111153669A (en) * | 2020-01-08 | 2020-05-15 | 中建材创新科技研究院有限公司 | Paper-surface gypsum board and preparation and application thereof |
| CN111807801A (en) * | 2020-06-28 | 2020-10-23 | 北新集团建材股份有限公司 | Paper-surface gypsum board and preparation method thereof |
| CN112707708A (en) * | 2020-12-29 | 2021-04-27 | 中建材创新科技研究院有限公司 | Paper-surface gypsum board and preparation method thereof |
-
2021
- 2021-06-21 CN CN202110686706.8A patent/CN113429186A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3719513A (en) * | 1971-03-10 | 1973-03-06 | Grace W R & Co | Sprayable gypsum plaster composition |
| FR3018220A1 (en) * | 2014-03-07 | 2015-09-11 | Saint Gobain Placo | ACOUSTIC PLATE BASED ON PLASTER. |
| CN110015906A (en) * | 2018-01-08 | 2019-07-16 | 北新集团建材股份有限公司 | A kind of low density paper surface gypsum board and its preparation process |
| CN111153669A (en) * | 2020-01-08 | 2020-05-15 | 中建材创新科技研究院有限公司 | Paper-surface gypsum board and preparation and application thereof |
| CN111807801A (en) * | 2020-06-28 | 2020-10-23 | 北新集团建材股份有限公司 | Paper-surface gypsum board and preparation method thereof |
| CN112707708A (en) * | 2020-12-29 | 2021-04-27 | 中建材创新科技研究院有限公司 | Paper-surface gypsum board and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 崔玉忠，刘洪: "《装配式建筑之优选部品：建筑板材》", 30 November 2017, 中国建材工业出版社, pages: 334 * |
| 王建强: "纸面石膏板护面纸与石膏芯材粘结性能的探讨", 《新型建筑材料》 * |
| 王建强: "纸面石膏板护面纸与石膏芯材粘结性能的探讨", 《新型建筑材料》, no. 11, 20 November 2000 (2000-11-20), pages 3 - 4 * |
| 龚洛书主编: "《建筑工程材料手册》", 30 June 1997, 中国建筑工业出版社, pages: 690 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022267848A1 (en) * | 2021-06-21 | 2022-12-29 | 北新集团建材股份有限公司 | Lightweight high-strength paperbacked gypsum board and preparation method therefor |
| CN115806424A (en) * | 2022-03-16 | 2023-03-17 | 安徽海雪新材料科技有限公司 | Low-starch paper-surface gypsum board |
| CN115806424B (en) * | 2022-03-16 | 2023-12-12 | 安徽海雪新材料科技有限公司 | Low-starch paper gypsum board |
| CN115432985A (en) * | 2022-09-21 | 2022-12-06 | 中建材创新科技研究院有限公司 | Light anti-deflection paper-surface gypsum board and preparation method thereof |
| CN115448678A (en) * | 2022-09-21 | 2022-12-09 | 中建材创新科技研究院有限公司 | Light anti-deflection paper-surface gypsum board and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113582646A (en) | Light high-strength paper-surface gypsum board and preparation method thereof | |
| CN113429186A (en) | Paper-surface gypsum board and preparation method thereof | |
| JP6416074B2 (en) | Microstructural characteristics of gypsum wallboard formed at high starch and high dispersant levels | |
| US10421250B2 (en) | Composite gypsum board and methods related thereto | |
| JP3187401U (en) | High starch lightweight gypsum wallboard | |
| KR100758830B1 (en) | Gypsum wood fiber product with improved water resistance | |
| RU2475361C2 (en) | Gypsum wall board with low dusting | |
| CN111807800A (en) | Paper-surface gypsum board and preparation method thereof | |
| JP2011502094A (en) | High hydroxyethyl starch level and high dispersant level in gypsum wallboard | |
| CN111548059B (en) | Paper-surface gypsum board, preparation method thereof and desulfurization gypsum pretreatment method | |
| CN114230295A (en) | Heat-preservation and heat-insulation paper-surface gypsum board and preparation method thereof | |
| CN114276103A (en) | Heat-preservation and heat-insulation paper-surface gypsum board and preparation method thereof | |
| CN115448678A (en) | Light anti-deflection paper-surface gypsum board and preparation method thereof | |
| US20180215664A1 (en) | Building product | |
| CN115432985A (en) | Light anti-deflection paper-surface gypsum board and preparation method thereof | |
| EP3687952A1 (en) | Migrating starch with high cold-water solubility for use in preparing gypsum board | |
| WO2022267848A1 (en) | Lightweight high-strength paperbacked gypsum board and preparation method therefor | |
| CN114667215A (en) | Method for preparing gypsum wallboard from high-salt gypsum and related products | |
| WO2023005022A1 (en) | Gypsum board and preparation method therefor | |
| CN115043639B (en) | High-strength high-fire-resistance paper gypsum board and preparation method thereof | |
| WO2021101691A1 (en) | Gypsum board containing high absorption paper and related methods | |
| EP4061784A1 (en) | Gypsum board containing high absorption paper and related methods | |
| WO2023005023A1 (en) | Paper surface gypsum board and preparation method therefor | |
| JP3191552U (en) | Lightweight plasterboard | |
| JP3192442U (en) | Lightweight gypsum board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210924 |
|
| RJ01 | Rejection of invention patent application after publication |