CN110510977B - Gypsum product and production method thereof - Google Patents
Gypsum product and production method thereof Download PDFInfo
- Publication number
- CN110510977B CN110510977B CN201910958576.1A CN201910958576A CN110510977B CN 110510977 B CN110510977 B CN 110510977B CN 201910958576 A CN201910958576 A CN 201910958576A CN 110510977 B CN110510977 B CN 110510977B
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- CN
- China
- Prior art keywords
- weight
- water
- auxiliary agent
- gypsum
- gypsum powder
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- 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.)
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- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 61
- 239000010440 gypsum Substances 0.000 title claims abstract description 61
- 238000004519 manufacturing process Methods 0.000 title abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 45
- 239000000843 powder Substances 0.000 claims abstract description 29
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000003638 chemical reducing agent Substances 0.000 claims description 17
- 239000004202 carbamide Substances 0.000 claims description 12
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea group Chemical group NC(=O)N XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 12
- 239000005995 Aluminium silicate Substances 0.000 claims description 11
- 229920002472 Starch Polymers 0.000 claims description 11
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 11
- 235000012211 aluminium silicate Nutrition 0.000 claims description 11
- 239000000440 bentonite Substances 0.000 claims description 11
- 229910000278 bentonite Inorganic materials 0.000 claims description 11
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 11
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 11
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 11
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 11
- 229920002401 polyacrylamide Polymers 0.000 claims description 11
- 229920000642 polymer Polymers 0.000 claims description 11
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 11
- 239000011734 sodium Substances 0.000 claims description 11
- 229910052708 sodium Inorganic materials 0.000 claims description 11
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 11
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 11
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 11
- 239000008107 starch Substances 0.000 claims description 11
- 235000019698 starch Nutrition 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 5
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 4
- 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 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims 1
- 238000001035 drying Methods 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 3
- 235000012216 bentonite Nutrition 0.000 description 5
- 125000006353 oxyethylene group Chemical group 0.000 description 4
- 239000002250 absorbent Substances 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 150000004683 dihydrates Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
- C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
- C04B28/147—Calcium sulfate hemi-hydrate with a specific crystal form beta-hemihydrate
-
- 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
- C04B2201/05—Materials having an early high strength, e.g. allowing fast demoulding or formless casting
Landscapes
- 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)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Medicinal Preparation (AREA)
Abstract
The invention discloses a gypsum product and a production method thereof, wherein the production method of the gypsum product comprises the steps of dissolving an auxiliary agent in water to prepare an auxiliary agent solution for later use, then uniformly mixing the auxiliary agent solution with raw gypsum powder, and feeding the mixture into a die cavity to prepare the product. The raw materials for producing the gypsum product comprise raw material gypsum powder, water and an auxiliary agent, wherein the water and the auxiliary agent are firstly prepared into an auxiliary agent solution, and the auxiliary agent accounts for 0.5-5.0% of the weight of the auxiliary agent solution; the weight ratio of the auxiliary agent solution to the raw gypsum powder is 20-50%: 1. the gypsum product prepared by the invention is added with the auxiliary agent, compared with the traditional process, the proportion of water in the formula is greatly reduced, so that the airing time or the drying cost is saved, and even the airing and the drying are not needed.
Description
Technical Field
The invention relates to the technical field of gypsum product production, in particular to a production method of a gypsum product.
Background
In the prior art, traditional gypsum products such as gypsum blocks, gypsum laths and the like are usually produced by taking semi-hydrated gypsum or a mixture of semi-hydrated gypsum and anhydrous gypsum as a raw material, adding a large amount of water to perform crystal transformation to generate dihydrate gypsum and solidifying the dihydrate gypsum. The proportion of water and gypsum, namely the water-plaster ratio, reaches 70%: 1, or even higher, to ensure adequate contact between water and gypsum material and fluidity of the slurry. Because of the addition of more water, the airing time of the product is long, or the drying cost is very high.
Disclosure of Invention
The invention mainly aims to provide a novel gypsum product production method, which can ensure that water and gypsum raw materials are fully combined to prepare a product with qualified strength under the condition of greatly reducing the water-cement ratio by adding a specific auxiliary agent. The method of the invention can reduce the airing time and the drying cost, and effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
a gypsum product consisting of the following components: raw materials of gypsum powder, water and an auxiliary agent, wherein the water and the auxiliary agent are prepared into an auxiliary agent solution, and the auxiliary agent accounts for 0.5-5.0% of the auxiliary agent solution by weight; the weight ratio of the auxiliary agent solution to the raw gypsum powder is 20-50%: 1.
further, the preferable weight ratio of the auxiliary agent solution to the raw gypsum powder is 30-40%: 1.
furthermore, in the assistant solution, the weight ratio of the assistant is preferably 1.0-3.0%.
Furthermore, the raw material gypsum powder is selected from one or more of beta hemihydrate gypsum, alpha hemihydrate gypsum or II type anhydrite.
Further, the auxiliary agent consists of an accelerator and a water reducing agent, wherein the accelerator is urea, and the water reducing agent is selected from one or more of sodium carboxymethyl cellulose, sodium carboxymethyl starch, kaolin, bentonite, polyacrylamide, a vinyl alcohol polymer, a sodium polyacrylate water-absorbing resin or an oxyethylene polymer.
Further, the weight ratio of the accelerator to the water reducing agent in the auxiliary agent solution is 0.6-0.9%: 0.8 to 1.2 percent.
Furthermore, the accelerator and the water reducing agent can ensure that the gypsum powder and water can be completely combined quickly under the condition of low water-paste ratio.
Further, the invention also provides a gypsum product with preferable components, which consists of the following components: 1 part by weight of raw gypsum powder;
urea: 0.0021 parts by weight;
water reducing agent: 0.0003 part by weight of sodium carboxymethylcellulose, 0.0006 part by weight of sodium carboxymethyl starch, 0.0003 part by weight of kaolin, 0.0003 part by weight of bentonite, 0.00045 part by weight of polyacrylamide, 0.0006 part by weight of vinyl alcohol polymer, 0.00045 part by weight of sodium polyacrylate water-absorbing resin and 0.00045 part by weight of ethylene oxide polymer
0.3 part by weight of water.
In order to achieve the above object, the present invention also provides a method for producing a gypsum product, comprising the steps of:
preparing materials: preparing raw materials of gypsum powder, water and an auxiliary agent according to a proportion, wherein the water and the auxiliary agent are used for preparing an auxiliary agent solution, and the auxiliary agent content in the auxiliary agent solution is 0.5-5.0%; the mixing ratio of the auxiliary agent solution to the raw gypsum powder is 20-50%: 1;
b, preparation of an auxiliary agent solution: the auxiliary agent consists of an accelerator and a water reducing agent, wherein the accelerator comprises urea, the water reducing agent is selected from one or more of sodium carboxymethylcellulose, sodium carboxymethyl starch, kaolin, bentonite, polyacrylamide, a vinyl alcohol polymer, sodium polyacrylate water-absorbing resin or an ethylene oxide polymer, and the weight ratio of the accelerator to the water reducing agent in the auxiliary agent solution is 0.6-0.9%: 0.8 to 1.2 percent of the total weight of the mixture,
mixing an accelerator, a water reducing agent and water, and fully mixing to obtain an auxiliary agent solution for later use;
c, forming: pouring the assistant solution into a stirrer, stirring the assistant solution and the raw gypsum powder which is being stirred for 15-20s to ensure that the gypsum powder is completely combined with water, and preparing the product.
Further, the temperature of the water is 5-24 ℃.
Further, the invention also provides a more specific production method of the gypsum product, which comprises the following steps:
preparing materials: 1 part by weight of raw material gypsum powder, urea: 0.0021 parts by weight; water reducing agent: 0.0003 part by weight of sodium carboxymethylcellulose, 0.0006 part by weight of sodium carboxymethyl starch, 0.0003 part by weight of kaolin, 0.0003 part by weight of bentonite, 0.00045 part by weight of polyacrylamide, 0.0006 part by weight of vinyl alcohol polymer, 0.00045 part by weight of sodium polyacrylate water-absorbing resin, 0.00045 part by weight of ethylene oxide polymer and 0.3 part by weight of water;
b, preparing auxiliary material auxiliary agent: pouring urea, sodium carboxymethylcellulose, sodium carboxymethyl starch, kaolin, bentonite, polyacrylamide, a vinyl alcohol polymer, sodium polyacrylate water-absorbent resin and an oxyethylene polymer into a container with a certain amount of water, and fully mixing for later use, wherein the temperature of the water is 5-24 ℃;
c, forming: pouring the water auxiliary agent into a stirrer, stirring the auxiliary agent and the gypsum powder which is being stirred for 15-20s to ensure that the gypsum powder is completely combined with the water, and packaging the product for 2h after the product is prepared.
Has the advantages that:
(1) the water-paste ratio of the gypsum product obtained by the invention is 30-40%: 1, the production period is 1-5min, and the product can be directly sent to on-site construction application after being formed without airing, so that the field and production cost required by stacking, airing and drying are saved.
(2) The accelerator and the water reducing agent can ensure that the gypsum powder can be completely combined with water quickly under the condition of low water-paste ratio, thereby saving water resources.
Detailed Description
The present invention will be described in detail with reference to specific examples.
Example 1
A method of producing a gypsum product, comprising the steps of:
preparing materials: 1 part of beta semi-hydrated gypsum powder, urea: 0.0021 parts by weight; water reducing agent: 0.0003 part by weight of sodium carboxymethylcellulose, 0.0006 part by weight of sodium carboxymethyl starch, 0.0003 part by weight of kaolin, 0.0003 part by weight of bentonite, 0.00045 part by weight of polyacrylamide, 0.0006 part by weight of vinyl alcohol polymer, 0.00045 part by weight of sodium polyacrylate water-absorbing resin, 0.00045 part by weight of ethylene oxide polymer and 0.3 part by weight of water;
b, preparing auxiliary material auxiliary agent: pouring urea, sodium carboxymethylcellulose, sodium carboxymethyl starch, kaolin, bentonite, polyacrylamide, a vinyl alcohol polymer, sodium polyacrylate water-absorbent resin and an oxyethylene polymer into a container with a certain amount of water, and fully mixing for later use, wherein the temperature of the water is 5-24 ℃;
molding: pouring the water auxiliary agent into a stirrer, stirring the auxiliary agent and the gypsum powder which is being stirred for 15-20s to ensure that the gypsum powder is completely combined with the water, and packaging the product for 2h after the product is prepared.
Example 2
A method of producing a gypsum product, comprising the steps of:
preparing materials: 1 part of beta semi-hydrated gypsum and II type anhydrous gypsum mixed gypsum powder by weight, urea: 0.0028 parts by weight; water reducing agent: 0.000525 parts of sodium carboxymethylcellulose, 0.0007 part of sodium carboxymethyl starch, 0.00035 part of kaolin, 0.00035 part of bentonite, 0.00035 part of polyacrylamide, 0.000875 parts of vinyl alcohol polymer, 0.0007 part of sodium polyacrylate water-absorbing resin, 0.00035 part of ethylene oxide polymer and 0.35 part of water;
b, preparing auxiliary material auxiliary agent: pouring urea, sodium carboxymethylcellulose, sodium carboxymethyl starch, kaolin, bentonite, polyacrylamide, a vinyl alcohol polymer, sodium polyacrylate water-absorbent resin and an oxyethylene polymer into a container with a certain amount of water, and fully mixing for later use, wherein the temperature of the water is 5-24 ℃;
c, forming: pouring the water auxiliary agent into a stirrer, stirring the auxiliary agent and the gypsum powder which is being stirred for 15-20s to ensure that the gypsum powder is completely combined with the water, and packaging the product for 2h after the product is prepared.
The method for preparing the gypsum product is realized through the embodiment, and the prepared gypsum product is short in preparation time period, low in water-paste ratio and free of airing.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (3)
1. A gypsum product, characterized by consisting of: raw materials of gypsum powder, water and an auxiliary agent, wherein the water and the auxiliary agent are prepared into an auxiliary agent solution, the auxiliary agent consists of an accelerant and a water reducing agent, the accelerant is urea,
the dosage of each component is as follows:
1 part by weight of raw material gypsum powder,
urea: 0.0021 parts by weight of a stabilizer,
water reducing agent: 0.0003 part by weight of sodium carboxymethylcellulose, 0.0006 part by weight of sodium carboxymethyl starch, 0.0003 part by weight of kaolin, 0.0003 part by weight of bentonite, 0.00045 part by weight of polyacrylamide, 0.0006 part by weight of vinyl alcohol polymer, 0.00045 part by weight of sodium polyacrylate water-absorbing resin, 0.00045 part by weight of ethylene oxide polymer,
0.3 part by weight of water,
the raw material gypsum powder is selected from one or more of beta hemihydrate gypsum, alpha hemihydrate gypsum or II type anhydrous gypsum.
2. A method of producing a gypsum product according to claim 1, comprising the steps of:
preparing materials: 1 part by weight of raw material gypsum powder, urea: 0.0021 parts by weight; water reducing agent: 0.0003 part by weight of sodium carboxymethylcellulose, 0.0006 part by weight of sodium carboxymethyl starch, 0.0003 part by weight of kaolin, 0.0003 part by weight of bentonite, 0.00045 part by weight of polyacrylamide, 0.0006 part by weight of vinyl alcohol polymer, 0.00045 part by weight of sodium polyacrylate water-absorbing resin, 0.00045 part by weight of ethylene oxide polymer and 0.3 part by weight of water;
b, preparation of an auxiliary agent solution: mixing an accelerator, a water reducing agent and water, and fully mixing to obtain an auxiliary agent solution for later use;
c, forming: pouring the assistant solution into a stirrer, stirring the assistant solution and the raw gypsum powder which is being stirred for 15-20s to ensure that the gypsum powder is completely combined with water, and preparing the product.
3. A method of producing a gypsum product according to claim 2, wherein the water is at a temperature of 5-24 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910958576.1A CN110510977B (en) | 2019-10-10 | 2019-10-10 | Gypsum product and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910958576.1A CN110510977B (en) | 2019-10-10 | 2019-10-10 | Gypsum product and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110510977A CN110510977A (en) | 2019-11-29 |
| CN110510977B true CN110510977B (en) | 2020-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910958576.1A Expired - Fee Related CN110510977B (en) | 2019-10-10 | 2019-10-10 | Gypsum product and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110510977B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1105692A (en) * | 1993-12-27 | 1995-07-26 | 黄小虎 | High strength plaster binding powder |
| CN101549980A (en) * | 2008-04-01 | 2009-10-07 | 北新集团建材股份有限公司 | Paper-surface plasterboard for quickly and efficiently removing methyl aldehyde and preparation method thereof |
| GB2475900B (en) * | 2009-12-04 | 2015-08-19 | Bpb Ltd | Lightweight gypsum products having enhanced water resistance |
| ES2605393T3 (en) * | 2012-09-12 | 2017-03-14 | Yoshino Gypsum Co., Ltd. | Gypsum composition, gypsum suspension, hardened plaster body, gypsum-based building material, gypsum board and method of producing gypsum-based building material |
| CN106747189B (en) * | 2016-12-07 | 2019-09-06 | 苏州同玄新材料有限公司 | Gypsum material of aerogel-congtg and preparation method thereof |
-
2019
- 2019-10-10 CN CN201910958576.1A patent/CN110510977B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN110510977A (en) | 2019-11-29 |
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