CN114195473A - Gypsum-based lightweight plastering material and preparation method thereof - Google Patents

Gypsum-based lightweight plastering material and preparation method thereof Download PDF

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Publication number
CN114195473A
CN114195473A CN202111614292.4A CN202111614292A CN114195473A CN 114195473 A CN114195473 A CN 114195473A CN 202111614292 A CN202111614292 A CN 202111614292A CN 114195473 A CN114195473 A CN 114195473A
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China
Prior art keywords
parts
gypsum
plastering material
agent
powder
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Pending
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CN202111614292.4A
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Chinese (zh)
Inventor
王敏瑞
王利明
宋卫雄
王甲
李建宇
滕朝晖
张宇
刘小
李炽
代至行
陆欣
郭琳
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China Construction Fifth Engineering Bureau Co Ltd
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China Construction Fifth Engineering Bureau Co Ltd
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Priority to CN202111614292.4A priority Critical patent/CN114195473A/en
Publication of CN114195473A publication Critical patent/CN114195473A/en
Pending legal-status Critical Current

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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
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482—Coating or impregnation materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/40—Porous or lightweight materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
    • 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
    • C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

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  • 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 invention relates to the technical field of building construction, and discloses a gypsum-based lightweight plastering material which comprises the following raw materials in parts by weight: 600 parts of natural white gypsum powder, 200 parts of heavy calcium powder, 400 parts of white sand, 1-2 parts of retarder, 1-2.5 parts of thickener, 1-2 parts of plasticizer, 5-10 parts of anti-cracking agent, 0.1-0.3 part of air entraining agent and 1-3 parts of pigment. The problems that the traditional plastering gypsum cannot be formed and delivered once, the bonding strength is not enough, the color is not uniform after forming, the surface is rough, the coating rate is low, the surface layer strength is not enough and the like are solved.

Description

Gypsum-based lightweight plastering material and preparation method thereof
Technical Field
The invention relates to the technical field of building construction, in particular to a gypsum-based lightweight plastering material and a preparation method thereof.
Background
At present, wall plastering is mainly divided into a leveling layer and a white scraping layer. The leveling layer mainly uses cement-based plastering mortar and whitewash stone, and the white scraping layer mainly comprises various putty. The leveling layer generally has the problems of rough wall surface, large wall surface color difference, hollowing, cracking and the like, and the subsequent repair is difficult and complicated. The white layer is mainly subject to the problem of dusting due to insufficient strength. The existing plastering has complex overall construction process, high cost and difficult maintenance of subsequent quality.
Therefore, the problem to be solved by the skilled person is how to provide plastering gypsum with simple construction and excellent quality.
Disclosure of Invention
In view of the above, the invention provides a gypsum-based lightweight plastering material and a preparation method thereof. The problems that the traditional plastering gypsum cannot be formed and delivered at one time, the bonding strength is not enough, the color is not uniform after forming, the surface is rough, the coating rate is low, the surface layer strength is not enough and the like are solved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a gypsum-based light plastering material comprises the following raw materials in parts by weight: 600 parts of natural white gypsum powder, 200 parts of heavy calcium powder, 400 parts of white sand, 1-2 parts of retarder, 1-2.5 parts of thickener, 1-2 parts of plasticizer, 5-10 parts of anti-cracking agent, 0.1-0.3 part of air entraining agent and 1-3 parts of pigment.
Preferably, the gypsum-based lightweight plastering material comprises the following raw materials in parts by weight: 500 parts of natural white gypsum powder, 166 parts of heavy calcium carbonate powder, 334 parts of white sand, 1.5 parts of retarder, 2 parts of thickener, 1 part of plastic agent, 10 parts of anti-cracking agent, 0.3 part of air entraining agent and 1.5 parts of pigment.
Preferably, the retarder is selected from any one or more of active agent, anti-dissolving agent, modifier, mycelium compound, urea and its derivative, bone glue, and animal fur glue.
Further, active agents include, but are not limited to, casein, keratin, proteins, gum arabic, gelatin, molasses, the reaction product of amino acids with formaldehyde, tannins; anti-lysing agents include, but are not limited to, glycerol, ethanol, acetone, calcium gluconate, citric acid, tartaric acid, boric acid, lactic acid, and lactate; modifiers include, but are not limited to, calcium acetate, sodium carbonate, magnesium carbonate.
Preferably, the thickening agent is selected from any one or more of cellulose, bentonite and magnesium aluminum silicate.
Further, cellulose ethers include, but are not limited to, carboxymethyl cellulose, methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose; bentonites include, but are not limited to, organobentonites, atapulgites, sodium bentonites, lithium bentonites.
Preferably, the plasticizer is selected from any one or more of starch ether, vinyl alcohol and magnesium aluminum silicate.
Further, starch ethers include, but are not limited to, hydroxypropyl modified starch ether, cross-linked starch, esterified starch, grafted starch; vinyl alcohols include, but are not limited to, polyvinyl alcohol, modified polyvinyl alcohol.
Preferably, the anti-cracking agent is selected from any one or more of lime, fiber and crystal.
Further, limes include, but are not limited to, lime, quicklime, light calcium; fibers include, but are not limited to, wood fibers, basalt fibers, polypropylene staple fibers, polyacrylonitrile staple fibers, high-strength high-modulus fibers, glass fibers; the crystal group includes, but is not limited to, gypsum whiskers.
Preferably, the air-entraining agent is selected from one or more of aromatic resins, alkyl benzene sulfonates, fatty alcohols, lignosulfonates, amino acids, and aluminum powder.
Further, the gum resin includes, but is not limited to, complex rosin soaps, sodium abietate air entraining agents; alkyl benzene sulfonates include, but are not limited to, sodium dodecylbenzene sulfonate, sodium butylbenzene sulfonate; the fatty alcohol includes but is not limited to C12 fatty alcohol polyvinyl chloride alkyl ether, animal high-quality modification, and fatty alcohol sodium sulfate; the lignosulfonate can be modified lignosulfonate; amino acids include, but are not limited to, glycine, proline and hydroxyproline complexes.
Preferably, the pigment is selected from any one or a mixture of ultramarine blue and titanium dioxide.
The invention also discloses a preparation method of the gypsum-based lightweight plastering material, which comprises the following steps:
putting natural white gypsum powder into a stirrer for priming;
adding retarder, thickener, plasticizer, anti-cracking agent, air entraining agent and pigment and stirring for 5-6 min;
thirdly, adding the white sand and the coarse whiting powder in sequence, and mixing and stirring for 4-5 minutes;
and fourthly, packaging the finished product by a packaging machine.
The invention also provides a using method of the gypsum-based lightweight plastering material, which comprises the following steps:
(1) mixing the gypsum-based lightweight plastering material and water according to the water-powder ratio of 1: 1.6-1: 1.8 mixing and preparing into slurry;
(2) coating the slurry on the wall surface;
(3) before the slurry is initially set, the wall surface is flattened by a guiding rule, a scraper and the like.
According to the technical scheme, compared with the prior art, the invention has the beneficial effects that:
1. the wall plastering cost is reduced, the effects of leveling and white layer scraping can be realized by the material at one time, and the material cost and the construction cost are saved.
2. The material can be constructed by adopting a machine spraying method or a manual method, and accords with the existing wall construction system.
3. The material belongs to aerogel micro-expansion material, the expansion coefficient is 0.1-1.15%, and the problem of cracking of wall plastering is thoroughly solved.
4. The material has excellent plastic effect, can be thin or thick, has no flow drop phenomenon, has the construction range of 0.5-4cm, and avoids the problem of wall surface wave wall.
5. The material is fine and smooth, and the balance of a square hole sieve of 1.0mm is 0.
6. After the material is dried, the color is uniform, the whiteness is pure, and the delivery standard can be reached at one time. The traditional gypsum ingredients are only natural gypsum, river sand and heavy calcium powder. The river sand is replaced on the basis of natural gypsum and heavy calcium powder, yellow sand and gray sand of the traditional gypsum are abandoned, white sand is adopted, color change caused by the color of the filling material is avoided, various additives are added to refine the product performance, and the product quality is optimized. Meanwhile, the bottom layer gypsum adopted in the market is yellow, the surface layer gypsum does not have the condition of single survival and needs to be matched with the bottom layer gypsum for use, and the white-degree-adjustable gypsum plaster can meet the whiteness requirement of the traditional surface layer gypsum, has all the characteristics of the traditional bottom layer gypsum and has the condition of one-time survival. Although the natural white gypsum has high overall whiteness, natural color difference exists, and the product adopts pigments such as ultramarine blue and the like to correct the whiteness of the white gypsum and neutralize yellow components in the white gypsum so as to achieve the effect of pure and clean whiteness. In addition, the traditional gypsum on the market is a neutral system, and the crack control agent is adopted to control the product crack and adjust the material property to be alkalescent, so that the product stability is improved, and the delivery quality is ensured. In addition, the whole formula of the invention adopts a high water retention rate system, and avoids water loss cracking caused by different thicknesses and color difference caused by different water retention effects.
7. The material meets the national regulation on the light plastering standard (GB/T28627-2012), and the specific requirements are as follows:
the operation time is 1-6h, the final setting time is 2-8h, the flexural strength is more than 2.0MPa, the whiteness is 85% -90%, the tensile bonding strength is more than 0.5MPa, and the bulk density is less than 1000 parts per M3。
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A gypsum-based light plastering material comprises the following raw materials in parts by weight: 500 parts of natural white gypsum powder, 200 parts of heavy calcium powder, 300 parts of white sand, 1.5 parts of retarder (vegetable protein), 2 parts of thickener (hydroxypropyl methyl cellulose), 1 part of plasticizer (hydroxypropyl modified starch ether), 10 parts of anti-cracking agent (ash calcium), 0.3 part of air entraining agent (sodium dodecyl benzene sulfonate) and 2 parts of pigment (ultramarine).
Example 2
A gypsum-based light plastering material comprises the following raw materials in parts by weight: 500 parts of natural white gypsum powder, 166 parts of heavy calcium carbonate powder, 334 parts of white sand, 1.5 parts of retarder (calcium gluconate), 2.5 parts of thickener (organic bentonite), 1.5 parts of plastic agent (modified polyvinyl alcohol), 8 parts of anti-cracking agent (light calcium), 0.3 part of air entraining agent (modified rosin) and 2 parts of pigment (ultramarine).
Example 3
A gypsum-based light plastering material comprises the following raw materials in parts by weight: 600 parts of natural white gypsum powder, 200 parts of heavy calcium powder, 200 parts of white sand, 2 parts of retarder (lactate), 2 parts of thickener (hydroxyethyl cellulose), 2 parts of plastic agent (grafted starch), 5 parts of anti-cracking agent (gray calcium), 0.1 part of air entraining agent (C12 fatty alcohol polyvinyl chloride alkyl ether) and 2.5 parts of pigment (titanium dioxide and ultramarine).
And (3) test results:
Figure BDA0003436010490000051
Figure BDA0003436010490000061
the embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The gypsum-based light plastering material is characterized by comprising the following raw materials in parts by weight: 600 parts of natural white gypsum powder, 200 parts of heavy calcium powder, 400 parts of white sand, 1-2 parts of retarder, 1-2.5 parts of thickener, 1-2 parts of plasticizer, 5-10 parts of anti-cracking agent, 0.1-0.3 part of air entraining agent and 1-3 parts of pigment.
2. The gypsum-based lightweight plastering material as claimed in claim 1, which comprises the following raw materials in parts by weight: 500 parts of natural white gypsum powder, 166 parts of heavy calcium carbonate powder, 334 parts of white sand, 1.5 parts of retarder, 2 parts of thickener, 1 part of plastic agent, 10 parts of anti-cracking agent, 0.3 part of air entraining agent and 1.5 parts of pigment.
3. A gypsum-based lightweight plastering material as claimed in claim 1 or 2, wherein said set retarder is selected from any one or more of an active agent, an anti-dissolving agent and a modifying agent.
4. A gypsum-based lightweight plastering material as claimed in claim 1 or 2, wherein said thickener is selected from any one or more of cellulose, bentonite, and magnesium aluminum silicate.
5. A gypsum-based lightweight plastering material as claimed in claim 1 or 2, wherein the plasticizer is selected from any one or more of starch ether, vinyl alcohol and magnesium aluminum silicate.
6. A gypsum-based lightweight plastering material as claimed in claim 1 or 2, wherein said crack inhibitor is selected from any one or more of lime, fiber and crystal.
7. A gypsum-based lightweight plastering material as claimed in claim 1 or 2, wherein said air entraining agent is selected from one or more of aromatic resins, alkylbenzenesulfonates, fatty alcohols, lignosulfonates, amino acids, and aluminum powder.
8. A gypsum-based lightweight plastering material as claimed in claim 1 or 2, wherein the pigment is selected from any one or both of ultramarine and titanium dioxide.
9. A method for the preparation of a gypsum-based lightweight plastering material according to any of claims 1 to 8, comprising the steps of:
putting natural white gypsum powder into a stirrer for priming;
adding retarder, thickener, plasticizer, anti-cracking agent, air entraining agent and pigment and stirring for 5-6 min;
thirdly, adding the white sand and the coarse whiting powder in sequence, and mixing and stirring for 4-5 minutes;
and fourthly, packaging the finished product by a packaging machine.
10. Use of a gypsum-based lightweight plastering material according to any of claims 1 to 8, characterized by the following steps:
(1) mixing the gypsum-based lightweight plastering material and water according to the water-powder ratio of 1: 1.6-1: 1.8 mixing and preparing into slurry;
(2) coating the slurry on the wall surface;
(3) before the slurry is initially set, the wall surface is flattened by a guiding rule, a scraper and the like.
CN202111614292.4A 2021-12-27 2021-12-27 Gypsum-based lightweight plastering material and preparation method thereof Pending CN114195473A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104193280A (en) * 2014-08-06 2014-12-10 南京市苏宝节能科技有限公司 Plastering gypsum dry powder
CN110451908A (en) * 2019-08-07 2019-11-15 龙牌粉料(太仓)有限公司 A kind of gypsum base putty and preparation method thereof of bottom surface unification
CN110885226A (en) * 2019-09-29 2020-03-17 上海贝恒人居建设集团有限公司 Colored gypsum plastering mortar and preparation method thereof
CN112897974A (en) * 2021-02-04 2021-06-04 漆仙姑新材料技术重庆有限公司 Heat-insulating plastering for inner wall

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104193280A (en) * 2014-08-06 2014-12-10 南京市苏宝节能科技有限公司 Plastering gypsum dry powder
CN110451908A (en) * 2019-08-07 2019-11-15 龙牌粉料(太仓)有限公司 A kind of gypsum base putty and preparation method thereof of bottom surface unification
CN110885226A (en) * 2019-09-29 2020-03-17 上海贝恒人居建设集团有限公司 Colored gypsum plastering mortar and preparation method thereof
CN112897974A (en) * 2021-02-04 2021-06-04 漆仙姑新材料技术重庆有限公司 Heat-insulating plastering for inner wall

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
王国富: "《预拌混凝土绿色制造技术》", 30 November 2017, 中国城市出版社 *
赵云龙等: "《石膏应用技术问答》", 30 September 2016, 中国建材工业出版社 *

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Application publication date: 20220318