CN114873983A - Plastering gypsum mortar prepared from anhydrous titanium gypsum and preparation method thereof - Google Patents
Plastering gypsum mortar prepared from anhydrous titanium gypsum and preparation method thereof Download PDFInfo
- Publication number
- CN114873983A CN114873983A CN202210623276.XA CN202210623276A CN114873983A CN 114873983 A CN114873983 A CN 114873983A CN 202210623276 A CN202210623276 A CN 202210623276A CN 114873983 A CN114873983 A CN 114873983A
- Authority
- CN
- China
- Prior art keywords
- gypsum
- plastering
- plastering gypsum
- parts
- water
- 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.)
- Withdrawn
Links
- 239000011426 gypsum mortar Substances 0.000 title claims abstract description 73
- 239000010440 gypsum Substances 0.000 title claims abstract description 68
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 68
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 239000010936 titanium Substances 0.000 title claims abstract description 38
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 36
- 238000005336 cracking Methods 0.000 claims abstract description 22
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 239000000945 filler Substances 0.000 claims abstract description 15
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 13
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 13
- 239000004571 lime Substances 0.000 claims abstract description 13
- 239000011398 Portland cement Substances 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims description 16
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 9
- 239000004743 Polypropylene Substances 0.000 claims description 8
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- -1 polypropylene Polymers 0.000 claims description 8
- 229920001155 polypropylene Polymers 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000001354 calcination Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 5
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 5
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 5
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229920005646 polycarboxylate Polymers 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 claims description 3
- 241000276489 Merlangius merlangus Species 0.000 claims description 3
- 239000006227 byproduct Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 229920000609 methyl cellulose Polymers 0.000 claims description 3
- 239000001923 methylcellulose Substances 0.000 claims description 3
- 235000010981 methylcellulose Nutrition 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000001509 sodium citrate Substances 0.000 claims description 3
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 3
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 3
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 3
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 12
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
- 238000006703 hydration reaction Methods 0.000 description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- 230000036571 hydration Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 150000004683 dihydrates Chemical class 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical group OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229940095564 anhydrous calcium sulfate Drugs 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229920003086 cellulose ether Polymers 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000004017 vitrification Methods 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
- C04B28/142—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
-
- 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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant 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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides plastering gypsum mortar prepared by using anhydrous titanium gypsum and a preparation method thereof. The plastering gypsum mortar comprises the following raw materials in parts by weight: 70-80 parts of titanium gypsum, 5-10 parts of Portland cement, 3-5 parts of lime, 0.2-0.6 part of water-retaining agent, 0.3-0.7 part of retarder, 0.5-1 part of water reducing agent, 0.1-0.3 part of anti-cracking agent, 0.1-0.3 part of tackifier, 0.2-0.4 part of light filler and 30-40 parts of water. The plastering gypsum mortar of the invention is light plastering gypsum mortar with excellent fluidity, water retention, crack resistance and strong adhesive force; in addition, various properties of the plastering gypsum mortar disclosed by the invention meet the specified requirements of bottom layer plastering gypsum in the national standard GB/T28627-2012 plastering gypsum.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to plastering gypsum mortar prepared from anhydrous titanium gypsum and a preparation method thereof.
Background
The plastering gypsum mortar takes gypsum as a main cementing material, has certain heat preservation, heat insulation and sound absorption properties due to fast setting and hardening and strong cohesive force, has good volume stability, fine and smooth texture and convenient construction, and is widely applied to the field of industrial and civil buildings. However, the existing plastering gypsum mortar sometimes has the quality problems of cracking, powder falling and low strength in the practical application process.
Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The invention aims to provide plastering gypsum mortar prepared by using anhydrous titanium gypsum and a preparation method thereof, and aims to solve the quality problems of cracking, powder falling and low strength in the application of the existing plastering gypsum mortar.
In order to achieve the above purpose, the invention provides the following technical scheme:
the plastering gypsum mortar comprises the following raw materials in parts by weight:
70-80 parts of anhydrous titanium gypsum, 5-10 parts of portland cement, 3-5 parts of lime, 0.2-0.6 part of water-retaining agent, 0.3-0.7 part of retarder, 0.5-1 part of water reducing agent, 0.1-0.3 part of anti-cracking agent, 0.1-0.3 part of tackifier, 0.2-0.4 part of light filler and 30-40 parts of water.
Optionally, the anhydrous titanium gypsum is type II anhydrous titanium gypsum which is prepared by calcining byproduct titanium gypsum obtained from titanium dioxide production, wherein the calcining temperature is above 350 ℃.
Optionally, the water retaining agent is one or a mixture of hydroxypropyl methyl cellulose ether, methyl cellulose ether and hydroxyethyl methyl cellulose ether.
Optionally, the retarder is one or a mixture of citric acid, sodium citrate and sodium hexametaphosphate.
Optionally, the water reducing agent is a polycarboxylate water reducing agent.
Optionally, the anti-cracking agent is a mixture of polypropylene fibers and heavy calcium carbonate powder, wherein the mass ratio of the polypropylene fibers to the heavy calcium carbonate powder is 1:6-1: 10.
Optionally, the tackifier is a redispersible rubber powder or polyvinyl alcohol.
Optionally, the light filler is vitrified micro bubbles, and the particle size of the vitrified micro bubbles is 2-4 mm.
Optionally, the liquid-solid ratio of the plastering gypsum mortar is 0.35-0.45.
The invention also provides a preparation method of the plastering gypsum mortar, which comprises the following steps:
weighing anhydrous titanium gypsum, cement, lime, a water-retaining agent, a retarder, a water reducing agent, an anti-cracking agent, a tackifier and a light filler according to a ratio, and stirring and mixing to obtain plastering gypsum;
and step two, adding water into the plastering gypsum obtained in the step one, and stirring and mixing to obtain plastering gypsum mortar.
Has the advantages that:
the plastering gypsum mortar is prepared from anhydrous titanium gypsum, portland cement, lime, a water-retaining agent, a retarder, an anti-cracking agent, a tackifier, a light filler and water, and the light plastering gypsum mortar with excellent fluidity, water-retaining property, anti-cracking property and strong bonding force is obtained by reasonably adjusting the content of each raw material. When the plastering gypsum mortar is applied, the obtained plastering layer and the substrate layer have enough bonding strength, are not easy to fall off, crack, fall off and the like, and have better quality. All properties of the plastering gypsum mortar meet the requirements of the bottom layer plastering gypsum in the national standard GB/T28627-2012 plastering gypsum.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely 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 that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
The present invention will be described in detail with reference to examples. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
Aiming at the quality problems of cracking, powder falling and low strength in the application of the existing plastering gypsum mortar, the invention provides the plastering gypsum mortar prepared by using the anhydrous titanium gypsum, and the plastering gypsum mortar provided by the invention has good water retention, crack resistance and strong bonding force, and is light plastering gypsum mortar.
The plastering gypsum mortar comprises the following raw materials in parts by weight:
70-80 parts of anhydrous titanium gypsum (such as 70 parts, 72 parts, 74 parts, 76 parts, 78 parts, 80 parts and any interval value between two end values), 5-10 parts of portland cement (such as 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts and any interval value between two end values), 3-5 parts of lime (such as 3 parts, 4 parts, 5 parts and any interval value between two end values), 0.2-0.6 part of water retention agent (such as 0.2 part, 0.3 part, 0.4 part, 0.5 part, 0.6 part and any interval value between two end values), 0.3-0.7 part of retarder (such as 0.3 part, 0.4 part, 0.5 part, 0.6 part, 0.7 part and any interval value between two end values), 0.5-1 part of water reducing agent (such as 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part, 0.7 part and any interval value between two end values), 0.1-0.3 parts of anti-cracking agent (such as 0.1 part, 0.2 part, 0.3 part and the interval value between any two endpoint values), 0.1-0.3 parts of tackifier (such as 0.1 part, 0.2 part, 0.3 part and the interval value between any two endpoint values), 0.2-0.4 parts of light filler (such as 0.2 part, 0.3 part, 0.4 part and the interval value between any two endpoint values) and 30-40 parts of water (such as 30 parts, 32 parts, 34 parts, 36 parts, 38 parts, 40 parts and the interval value between any two endpoint values).
In the specific embodiment of the invention, the anhydrous titanium gypsum is II type anhydrous titanium gypsum which is prepared by calcining byproduct titanium gypsum obtained by titanium dioxide production, wherein the calcining temperature is more than 350 ℃. The type II anhydrous titanium gypsum is a mineral with anhydrous calcium sulfate as a main component, and the crystals of the titanium gypsum are recrystallized at high temperature. The II type anhydrous gypsum has compact structure, slow dissolution and low hydration activity, can not be directly hydrated into semi-hydrated gypsum, can be slowly dissolved in water in a small amount, the concentration of a calcium ion and sulfate ion solution generated after dissolution is supersaturated relative to the concentration of the dihydrate gypsum, and only the dihydrate gypsum is crystallized from the ion solution, and the crystallization is very slow; however, under the action of the portland cement and lime, the provided sulfate ions or calcium ions can excite the activity of the type II anhydrous gypsum and accelerate the hydration hardening rate.
The plastering gypsum mortar disclosed by the invention contains the water-retaining agent as the raw material, can ensure that the plastering gypsum mortar has better water-retaining property, effectively prevents the phenomenon of strength reduction caused by too fast drying and insufficient hydration when the plastering gypsum mortar is applied, and has the advantages of long operable time, smooth batch scraping and good construction performance.
Optionally, the water retention agent is selected from one or more of hydroxypropyl methyl cellulose ether, methyl cellulose ether and hydroxyethyl methyl cellulose ether. Due to the introduction of nonpolar groups such as methyl and the like, the cellulose ether has the property of a surfactant and can effectively improve the construction performance of the plastering gypsum. Preferably, the water retaining agent is hydroxypropyl methyl cellulose ether, the viscosity of the hydroxypropyl methyl cellulose ether is preferably 300-500mPa.s, and the water consumption of the plastering gypsum can be reduced as much as possible on the premise of ensuring the complete hydration of the plastering gypsum.
In the plastering gypsum mortar, the retarder and the water-retaining agent are matched with each other, and the prepared plastering gypsum mortar has excellent fluidity, cohesiveness and water-retaining property. Optionally, the retarder is one or more of citric acid, sodium citrate and sodium hexametaphosphate.
In the plastering gypsum mortar of the invention, the water reducing agent is a polycarboxylate water reducing agent. The polycarboxylate water reducing agent is added, so that raw materials in the plastering gypsum can be dispersed, the workability is improved, the water adding amount of the plastering gypsum is effectively reduced, the compactness of the plastering gypsum is improved, the fluidity of plastering gypsum slurry is increased, the hydration reaction after plastering can be ensured to be complete, and the strength of a subsequent plastering layer can not be reduced due to water loss.
In the mortar plastering gypsum, the anti-cracking agent is a mixture of polypropylene fiber and heavy calcium carbonate powder, the polypropylene fiber has better workability and can be uniformly dispersed, and after being added with the heavy calcium carbonate powder, the anti-cracking agent can effectively prevent crack propagation and refine cracks, thereby effectively improving the anti-cracking property of the plastering gypsum mortar in application. Wherein the mass ratio of the polypropylene fiber to the heavy calcium powder is 1:6-1:10 (such as 1:6, 1:7, 1:8, 1:9, 1:10 and the interval value between any two endpoint values). Alternatively, the coarse whiting powder preferably has a fineness of 200 mesh and the polypropylene fibers have a length of 1.0-1.2mm (e.g., 1.0mm, 1.1mm, 1.2mm, and any interval therebetween).
In the plastering gypsum mortar, the tackifier is redispersible rubber powder or polyvinyl alcohol. Wherein the polymer type of the redispersible powders is selected from vinyl acetate-ethylene copolymers having a glass transition temperature of from 15 to 18 ℃ (such as 15 ℃, 16 ℃, 17 ℃, 18 ℃ and any interval between the two endpoints); the polyvinyl alcohol is an organic compound, can provide the cohesiveness of the plastering gypsum mortar after being added, ensures that a plastering layer and a basal layer of the plastering gypsum mortar have enough cohesive strength when the plastering gypsum mortar is applied, is not easy to fall off, crack, fall off and the like, and has better quality.
In the plastering gypsum mortar, the light filler is vitrified micro bubbles, and the vitrified micro bubbles form certain particle strength due to surface vitrification, have very stable physical and chemical properties and strong aging resistance and weather resistance, have excellent heat insulation, fire prevention and sound absorption properties, and are suitable for being used as light filling aggregates and heat insulation, fire prevention, sound absorption and heat preservation materials in various fields. The vitrified micro bubbles are used as lightweight aggregate in the plastering gypsum mortar, so that the workability and the self-resistance strength of the plastering gypsum mortar can be improved, the material shrinkage rate is reduced, the comprehensive performance of the product is improved, and the comprehensive production cost is reduced. Alternatively, the size of the vitrified small balls is 2-4mm (such as 2mm, 3mm, 4mm and the interval value between any two endpoints).
The liquid-solid ratio of the plastering gypsum mortar is 0.35-0.45 (such as 0.35, 0.37, 0.40, 0.42, 0.45 and the interval value between any two endpoint values). It should be noted that the liquid-solid ratio is the ratio of water to other raw materials.
The invention also provides a preparation method of the plastering gypsum mortar, which comprises the following steps:
weighing anhydrous titanium gypsum, cement, lime, a water-retaining agent, a retarder, a water reducing agent, an anti-cracking agent, a tackifier and a light filler according to a ratio, and stirring and mixing to obtain plastering gypsum;
and step two, adding water into the plastering gypsum obtained in the step one, and stirring and mixing to obtain plastering gypsum mortar.
The plastering gypsum, the plastering gypsum mortar and the preparation method thereof of the present invention will be described in detail by specific examples.
Example 1
The plastering gypsum mortar of the embodiment comprises the following raw materials in parts by weight:
70 parts of type II anhydrous titanium gypsum, 7 parts of Portland cement, 5 parts of lime, 0.2 part of water-retaining agent, 0.3 part of retarder, 0.5 part of water reducing agent, 0.1 part of anti-cracking agent, 0.1 part of tackifier, 0.2 part of light filler and 30 parts of water.
The preparation method of the plastering gypsum mortar of the embodiment comprises the following steps:
(1) weighing II type anhydrous titanium gypsum, cement, lime, a water-retaining agent, a retarder, a water reducing agent, an anti-cracking agent, a tackifier and a light filler according to a ratio, and stirring and mixing to obtain plastering gypsum;
(2) and (2) adding water into the plastering gypsum obtained in the step (1), and stirring and mixing to obtain plastering gypsum mortar.
Example 2
The plastering gypsum mortar of the embodiment comprises the following raw materials in parts by weight:
75 parts of type II anhydrous titanium gypsum, 5 parts of Portland cement, 3 parts of lime, 0.6 part of water-retaining agent, 0.5 part of retarder, 1 part of water reducing agent, 0.3 part of anti-cracking agent, 0.2 part of tackifier, 0.4 part of light filler and 38 parts of water.
The preparation method of the plastering gypsum mortar of this example is the same as that of example 1.
Example 3
The plastering gypsum mortar of the embodiment comprises the following raw materials in parts by weight:
80 parts of type II anhydrous titanium gypsum, 10 parts of Portland cement, 4 parts of lime, 0.5 part of water-retaining agent, 0.7 part of retarder, 0.7 part of water reducing agent, 0.2 part of anti-cracking agent, 0.3 part of tackifier, 0.2 part of light filler and 40 parts of water.
The preparation method of the plastering gypsum mortar of this example is the same as that of example 1.
Comparative example 1
The difference between the comparative example and the example 1 is that the dosage of the water-retaining agent in the raw materials of the plastering gypsum mortar is 0.1 part, and other raw materials are the same as the example 1; and the preparation method of the plastering gypsum mortar of this comparative example was the same as example 1.
Comparative example 2
The difference between the comparative example and the example 1 is that the dosage of the anti-cracking agent in the raw materials of the plastering gypsum mortar is 0.05 part, and other raw materials are the same as the example 1; and the preparation method of the plastering gypsum mortar of this comparative example was the same as example 1.
Comparative example 3
The difference between the comparative example and the example 1 is that the dosage of the tackifier in the raw materials of the plastering gypsum mortar is 0.05 part, and other raw materials are the same as the example 1; and the preparation method of the plastering gypsum mortar of this comparative example was the same as example 1.
The water retention rate, setting time, compressive strength, flexural strength and adhesive strength of the plastering gypsum mortar obtained in examples 1 to 3 and comparative examples 1 to 3 were measured according to the regulations of the bottom plastering gypsum in the national standard GB/T28627-2012 plastering gypsum, and the measurement results are shown in Table 1. The crack resistance test of the plastering gypsum mortar specifically comprises the following steps: plastering gypsum mortar is adopted to be coated and scraped on a cement board to form a slope with the length of 300mm, the width of 50mm and the gradient of 1/15, the slope is placed in a test environment with the wind speed of 2.5m/s, and after the test environment lasts for 6 hours, the condition of cracks generated on the surface of the plastering gypsum is observed.
TABLE 1 Performance data of the plastering gypsum mortars obtained in examples 1 to 3 and comparative examples 1 to 3
As can be seen from the performance data in Table 1, compared with comparative examples 1 to 3, the plastering gypsum mortar obtained in examples 1 to 3 of the present invention has excellent fluidity, water retention, crack resistance and bonding force, is not easy to fall off, crack, powder fall off, etc., and has good quality; and all the performances of the plastering gypsum mortar meet the requirements of the bottom layer plastering gypsum in the national standard GB/T28627-2012 plastering gypsum.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The plastering gypsum mortar prepared by using the anhydrous titanium gypsum is characterized by comprising the following raw materials in parts by weight:
70-80 parts of anhydrous titanium gypsum, 5-10 parts of Portland cement, 3-5 parts of lime, 0.2-0.6 part of water-retaining agent, 0.3-0.7 part of retarder, 0.5-1 part of water reducing agent, 0.1-0.3 part of anti-cracking agent, 0.1-0.3 part of tackifier, 0.2-0.4 part of light filler and 30-40 parts of water.
2. The plastering gypsum mortar prepared by using the anhydrous titanium gypsum as claimed in claim 1, wherein the anhydrous titanium gypsum is type II anhydrous titanium gypsum which is prepared by calcining byproduct titanium gypsum obtained by titanium dioxide production, wherein the calcining temperature is more than 350 ℃.
3. The plastering gypsum mortar prepared by using the anhydrous titanium gypsum as described in claim 1, wherein the water retaining agent is one or more of hydroxypropyl methyl cellulose ether, methyl cellulose ether and hydroxyethyl methyl cellulose ether.
4. The plastering gypsum mortar prepared by using the anhydrous titanium gypsum as described in claim 1, wherein the retarder is one or a mixture of citric acid, sodium citrate and sodium hexametaphosphate.
5. The plastering gypsum mortar prepared by using the anhydrous titanium gypsum according to claim 1, wherein the water reducing agent is a polycarboxylate water reducing agent.
6. The plastering gypsum mortar prepared by using the anhydrous titanium gypsum as claimed in claim 1, wherein the anti-cracking agent is a mixture of polypropylene fiber and coarse whiting powder, wherein the mass ratio of the polypropylene fiber to the coarse whiting powder is 1:6-1: 10.
7. The plastering gypsum mortar prepared by using the anhydrous titanium gypsum according to claim 1, wherein the tackifier is redispersible rubber powder or polyvinyl alcohol.
8. The plastering gypsum mortar prepared by using the anhydrous titanium gypsum according to claim 1, wherein the light filler is vitrified micro bubbles, and the particle size of the vitrified micro bubbles is 2-4 mm.
9. The plastering gypsum mortar prepared from anhydrous titanium gypsum according to any of claims 1 to 8, wherein the liquid-solid ratio of the plastering gypsum mortar is 0.35 to 0.45.
10. A method of preparing the plasterboard mortar of any one of claims 1 to 9, wherein the method comprises the steps of:
weighing anhydrous titanium gypsum, cement, lime, a water-retaining agent, a retarder, a water reducing agent, an anti-cracking agent, a tackifier and a light filler according to a ratio, and stirring and mixing to obtain plastering gypsum;
and step two, adding water into the plastering gypsum obtained in the step one, and stirring and mixing to obtain plastering gypsum mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210623276.XA CN114873983A (en) | 2022-06-01 | 2022-06-01 | Plastering gypsum mortar prepared from anhydrous titanium gypsum and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210623276.XA CN114873983A (en) | 2022-06-01 | 2022-06-01 | Plastering gypsum mortar prepared from anhydrous titanium gypsum and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114873983A true CN114873983A (en) | 2022-08-09 |
Family
ID=82679624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210623276.XA Withdrawn CN114873983A (en) | 2022-06-01 | 2022-06-01 | Plastering gypsum mortar prepared from anhydrous titanium gypsum and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114873983A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115819064A (en) * | 2022-12-16 | 2023-03-21 | 四川龙蟒新材料有限公司 | Caulking gypsum |
| CN115947584A (en) * | 2022-11-03 | 2023-04-11 | 攀钢冶金材料有限责任公司 | Light composite plastering titanium white gypsum mortar material and preparation method thereof |
| CN116462476A (en) * | 2023-04-06 | 2023-07-21 | 石河子大学 | Calcination-free dihydrate gypsum-based waterproof and anti-cracking plastering mortar |
-
2022
- 2022-06-01 CN CN202210623276.XA patent/CN114873983A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115947584A (en) * | 2022-11-03 | 2023-04-11 | 攀钢冶金材料有限责任公司 | Light composite plastering titanium white gypsum mortar material and preparation method thereof |
| CN115819064A (en) * | 2022-12-16 | 2023-03-21 | 四川龙蟒新材料有限公司 | Caulking gypsum |
| CN116462476A (en) * | 2023-04-06 | 2023-07-21 | 石河子大学 | Calcination-free dihydrate gypsum-based waterproof and anti-cracking plastering mortar |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114873983A (en) | Plastering gypsum mortar prepared from anhydrous titanium gypsum and preparation method thereof | |
| JP2007534605A (en) | Cement mortar for tiles using moisture retention agent | |
| CN108623239B (en) | Special mortar for aerated concrete | |
| CN108249788B (en) | Alkali-activated cementing material and preparation method thereof | |
| CN105541221B (en) | A kind of novel energy saving thermal insulation mortar and preparation method thereof | |
| US9272952B2 (en) | Admixture composition for a tile cement mortar and a tile cement mortar composition comprising the same | |
| CN108328977B (en) | Concrete repairing material | |
| CN107651893B (en) | Radiation-proof decorative cement | |
| CN112063215B (en) | Preparation method of gypsum-based bottom putty for preventing wall surface from cracking | |
| CN110746166A (en) | Self-crystallized anti-permeability and moisture-proof mortar and production method thereof | |
| KR20180060672A (en) | Composition for construction materials and construction materials having the same | |
| CN111943626A (en) | Gypsum-based wall leveling material and preparation method and use method thereof | |
| KR101858516B1 (en) | Low efflorescence tile grout composition | |
| CN107162523B (en) | Ceramic tile adhesive and preparation method thereof | |
| KR0180111B1 (en) | Waterproofing cement mortar composition | |
| CN110183189B (en) | Shield anti-water dispersion synchronous grouting slurry with controllable initial setting time and preparation method thereof | |
| CN105236884B (en) | Polymer cement materials | |
| CN111039622A (en) | Rapid-setting self-leveling mortar | |
| CN108117360A (en) | A kind of anti-scum ceramic wall and floor bricks binding agent and preparation method thereof | |
| CN112047677A (en) | Ultrahigh-performance concrete joint mixture | |
| CN110563432A (en) | Grouting material based on magnesium phosphate cement | |
| CN110937873A (en) | High-doping-amount phosphogypsum base surface integrated light plastering gypsum | |
| CN111302699B (en) | Wet-mixed mortar plasticity-maintaining agent | |
| JPS61146742A (en) | Self leveling floor material | |
| KR101086851B1 (en) | Waterproof material composition and manufacture of same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220809 |