RU2659432C1 - Rheology regulator for inorganic binder-based dispersion systems - Google Patents

Rheology regulator for inorganic binder-based dispersion systems Download PDF

Info

Publication number
RU2659432C1
RU2659432C1 RU2017112223A RU2017112223A RU2659432C1 RU 2659432 C1 RU2659432 C1 RU 2659432C1 RU 2017112223 A RU2017112223 A RU 2017112223A RU 2017112223 A RU2017112223 A RU 2017112223A RU 2659432 C1 RU2659432 C1 RU 2659432C1
Authority
RU
Russia
Prior art keywords
regulator
composition
gypsum
acid
rheological properties
Prior art date
Application number
RU2017112223A
Other languages
Russian (ru)
Inventor
Сергей Валерьевич Арасланкин
Олег Борисович Томилин
Original Assignee
Общество с ограниченной ответственностью "Экспонента"
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Общество с ограниченной ответственностью "Экспонента" filed Critical Общество с ограниченной ответственностью "Экспонента"
Priority to RU2017112223A priority Critical patent/RU2659432C1/en
Application granted granted Critical
Publication of RU2659432C1 publication Critical patent/RU2659432C1/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24Macromolecular compounds
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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 hydraulic cements other than calcium sulfates
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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 hydraulic cements other than calcium sulfates
    • C04B28/10Lime cements or magnesium oxide cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14Compositions 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

Abstract

FIELD: chemistry.
SUBSTANCE: invention relates to a composition of a rheology regulator, to the use thereof and to the composition of a dry construction mixture containing a regulator, and be used in inorganic binder-based compositions. Rheology regulator for use in inorganic binder-based compositions contains at least one component which is a copolymer of 2-propenamide and ethenecarboxylic acid, wherein the mole fraction of the carboxyl groups in the copolymer of 2-propenamide and ethenecarboxylic acid is about 0.05 to 0.30, and the product of copolymerisation constants r1⋅r2 is less than 1, where r1 is the copolymerisation constant of 2-propenamide, r2 is the copolymerisation constant of ethenecarboxylic acid. Use of the rheology regulator in inorganic binder-based compositions, where said composition is selected from dry plaster, putty, adhesive, cement-based floor and assembly mixture, gypsum, limestone, cement-limestone, gypsum cement and gypsum-limestone binder. Dry construction mixture includes binder – gypsum plaster, alkalinity regulator – slaked lime, filler – limestone flour, aggregate – quartz sand, water-retaining additive – 2-hydroxyethyl methylcellulose, pore-forming agent – sodium dodecyl sulphate, setting retarder – L-(+)-2,3-dihydroxybutanedioic acid, and also contains a rheology regulator at a given ratio of components.
EFFECT: wider range of permissible water-solids ratio, lower density and higher water-retaining capacity of the dispersion system, reduced consumption of the construction composition on forming a unit surface area for a given layer thickness, reduced defects and graininess of the surface due to the introduction of a rheology regulator in the construction composition.
8 cl, 3 tbl

Description

The invention relates to the composition of the regulator of rheological properties, to its use and to the composition of the dry building mixture containing the regulator, and may find application in compositions based on inorganic binders.

In order to control the rheological properties of dispersed systems based on inorganic binders, various in nature chemical additives are often used. In relation to dry construction mixtures, rheological additives based on water-soluble starch esters are most widely used. The functional feature of this group of additives is their thickening ability, which is ensured by the formation in the aqueous medium of a colloidal solution having a higher viscosity with respect to water. The characteristic thickening effect is additionally accompanied by an increase in the water-holding, anti-sedimentation and thixotropic properties of the dispersed system, while improving its physical and technological properties. A significant disadvantage of this group of additives is that an increase in their content in the composition of the composition increases the coagulation of particles of the dispersed phase, ultimately leading to the formation of agglomerates in the dispersed system. As a rule, the result of this change is locally expressed cracks and other defects on the surface of the disperse system.

Known rheological additive for mineral building materials, containing at least two different dispersants and at least one stabilizer or at least one dispersant and at least two different stabilizers. The dispersant is selected from the group of ligninsulfonate, polycarboxylate, etc. The stabilizer is selected from the group of modified or unmodified, fully or partially hydrolyzed polyvinyl alcohol, polyvinyl acetal, etc. The additive contains additional components, in particular surface-active compounds, water-redispersible powders, cellulose ethers , substances to reduce shrinkage and / or to reduce efflorescence, etc. The use of rheological additives in the composition of mineral hardening building materials terial where the composition is selected from dry mortar, fresh mortar, concrete, shotcrete, liquefied self-compacting concrete mixture, alabaster, gypsum, etc. (RU 2493120, IPC С04В 24/26, С04В 24/38, С04В 103/40, publ. 20. 09. 2013).

A disadvantage of the known invention is the high content of rheological additives in the composition of mineral building materials, which is necessary to provide the required degree of thickening of the disperse system (from 0.01 to 3.0 wt.%). In addition, the well-known solution does not study the influence of the specified rheological additives on the formation of physicotechnological properties that determine the complexity of using mineral building materials.

Known dry building mixture containing calcium sulfate semi-aquatic α- or β-form, schungite sand of the III variety, lime hydrated fluff, modifying additive, including methyl cellulose, starch ether, tartaric acid (RU 2307809, IPC С04В 28/02, С04В 28/14, С04В 111/20, publ. 10.10.2007).

The known composition of the dry mortar has the following disadvantages: a low range of permissible water-solid ratio corresponding to a mobility range of 150 to 165 mm, a high consumption of dry mortar for the formation of 1 m 2 surface with a layer thickness of 10 mm, the presence of defects on the surface when applying the mortar to abundantly absorbent bases.

The task of the invention is to develop a rheological properties regulator intended for use in the compositions of building compositions based on inorganic binders and allowing to control a wide range of technological properties that determine the economic efficiency and the complexity of the construction work.

The technical result consists in expanding the range of the permissible water-solid ratio, decreasing the density and increasing the water-holding capacity of the dispersed system, reducing the consumption of the building composition to form a unit of surface area at a given layer thickness, reducing defects and graininess of the surface by introducing a rheological properties regulator into the composition of the building composition.

The essence of the invention lies in the fact that the regulator of rheological properties contains at least one component, which is a copolymer of 2-propenamide and ethencarboxylic acid. The rheological properties regulator is a fine powder, in which the content of particles with a diameter of less than 200 microns is more than 98 wt. % The mass fraction of the copolymer of 2-propenamide and ethenocarboxylic acid is from about 80 to 97 wt. % The mole fraction of carboxyl groups in the copolymer of 2-propenamide and ethenocarboxylic acid is from about 0.05 to 0.30. The product of the copolymerization constants r one ⋅r 2 is less than 1, wherer one - copolymerization constant of 2-propenamide,r 2  is the copolymerization constant of ethenocarboxylic acid.

The copolymer of 2-propenamide and ethenocarboxylic acid is a fine powder with a particle size of less than 200 microns, obtained by drying, grinding and fractionation of partially hydrolyzed poly (1-carbamoylethylene).

The introduction of a rheological properties regulator into the composition based on an inorganic binder provides at least an extension of the range of acceptable water-solid ratio corresponding to the required range of mobility of the dispersed system, a decrease in the density of the dispersed system at a given value of mobility, an increase in the water-holding capacity of the dispersed system, and a reduction in the consumption of the building composition on the formation of a unit of surface area at a given layer thickness, reducing defects and rnistosti surface.

The use of the rheological properties regulator as a part of compositions based on inorganic binders, where the specified composition is selected from dry plaster, putty, adhesive, floor and mounting mixture on cement, gypsum, lime, cement-lime, gypsum cement and gypsum-lime binder: general-purpose plaster compositions for manual and machine application, reinforced plaster mixes, heat-insulating plaster materials, waterproofing plasters, base plaster mixes, reinforcing plasters and for the installation of bonded thermal insulation systems, decorative plaster materials, restoration plasters, putty for base and finish walls and ceilings, facade putty materials, decorative putty mixtures, adhesive materials for tiling, grouting compounds, adhesive mixtures for fixing insulation, adhesives assembly for the installation of enclosing structures of gypsum plasterboards, gypsum boards and blocks of cellular concrete, self-leveling self-leveling floors, rough level whether reinforced floor mixtures, heat-insulating screeds, installation and masonry mixtures for ceramic, silicate and clinker bricks.

Dry building mix includes an astringent - building gypsum, alkalinity regulator - slaked lime, filler - limestone powder, aggregate - quartz sand, water-retaining additive - 2-hydroxyethylmethyl cellulose, pore-forming agent - sodium dodecyl sulfate, setting retarder - L - (+) - 2, 3-dihydroxybutanedioic acid, in addition, additionally contains a regulator of rheological properties, in the following ratio of components, wt. %:

Plaster of construction 40-55 Slaked lime 0.8-2.6 Limestone flour 10-35 Quartz sand 7-49 2-hydroxyethyl methyl cellulose 0.15-0.22 Sodium dodecyl sulfate 0.01-0.03 L - (+) - 2,3-dihydroxybutanedioic acid 0.03-0.12 Rheological Regulator 0.01-0.03

The dry building mix contains silica sand fractions of 0-0, 63 mm.

The following components were used to prepare the dry building mix: gypsum building G-5 B II GOST 125-79, slaked lime 1 grade GOST 9179-77, limestone flour GOST 14050-93, quartz sand PB-150-1 GOST 22551-77, water-retaining the additive is Tylose MH 15002 P6 2-hydroxyethylmethyl cellulose, Hostapur OSB sodium dodecyl sulfate is a pore-forming agent and the setting retarder is L - (+) - 2,3-dihydroxybutanedioic acid.

To prove the achievement of the technical result when using the proposed regulator of rheological properties, four compositions of building compositions based on inorganic binders, the material composition of which is given in table. one.

Composition No. 1 is a reference example of a building composition for comparison with compositions No. 2, No. 3 and No. 4. The material compositions of compositions No. 2, No. 3, and No. 4 differ from composition No. 1 in that each of them additionally contains one component that makes a significant contribution to the formation of the physicotechnological properties of the compositions and dispersed systems based on them. As an additional component of the composition No. 2, No. 3 and No. 4 contain 0, 80 wt. % expanded perlite sand M75 GOST 10832-2009, 0.02 wt. % thickening additives (hydroxypropylcarboxymethyl starch BerolanST-801) and 0.02 wt. % of the proposed regulator of rheological properties, respectively.

The results of determining the mobility and density of the dispersed system at various values of the water-solid ratio (W / T) for each investigated composition of the building composition are given in table. 2, physical and technological properties of building compositions and dispersed systems based on them in the table. 3.

The properties of dispersed systems obtained by mixing compositions No. 2, No. 3 and No. 4 with distilled water differ from the properties of composition No. 1 by at least the range of permissible water-solid ratio corresponding to the range of mobility of the dispersed system from 150 to 165 mm, the density of the dispersed system at mobility equal to 160 ± 1 mm, the water-holding capacity of the dispersed system, the consumption of the building composition for the formation of 1 m 2 surface area with a layer thickness of 10 mm, defects and graininess of the surface.

According to the combination of properties of disperse systems obtained by mixing compositions No. 1-No. 4, composition No. 4 with a rheological properties regulator provides the best operational properties.

Figure 00000001

Figure 00000002

Figure 00000003

Claims (9)

1. The rheological properties regulator intended for use in compositions based on inorganic binders, characterized in that it contains at least one component, which is a copolymer of 2-propenamide and ethenocarboxylic acid, while the molar fraction of carboxyl groups in the copolymer 2 -propenamide and ethenocarboxylic acid is from about 0.05 to 0.30, and the product of the copolymerization constants r 1 ⋅r 2 is less than 1, where r 1 is the copolymerization constant of 2-propenamide, r 2 is the copolymerization constant of ethenk arboxylic acid.
2. The rheological properties regulator according to claim 1, characterized in that it is a fine powder in which the content of particles with a diameter of less than 200 microns is more than 98 wt. %
3. The rheological properties regulator according to claim 1, characterized in that the mass fraction of the copolymer of 2-propenamide and ethenocarboxylic acid is from about 80 to 97 wt. %
4. The regulator of rheological properties according to one or more paragraphs. 1-3, characterized in that the introduction of the regulator in the composition of compositions based on inorganic binders provides at least an extension of the range of permissible water-solid ratio corresponding to the required range of mobility of the dispersed system, a decrease in the density of the dispersed system at a given value of mobility, an increase in the water-holding ability of the dispersed systems, reducing the consumption of building composition for the formation of a unit of surface area at a given layer thickness, reducing defects and grain surface roughness.
5. The use of the regulator of rheological properties in one or more paragraphs. 1-3 in the composition of compositions based on inorganic binders, where the specified composition is selected from a dry plaster, putty, adhesive, floor and mounting mixture on cement, gypsum, lime, cement-lime, gypsum cement and gypsum-lime binder: general purpose plaster compositions for manual and machine application, reinforced plaster mixes, heat-insulating plaster materials, waterproofing plasters, base plaster mixes, reinforcing plasters for bonded heat systems olations, decorative plastering materials, restoration plasters, putty compounds for basic and finishing walls and ceilings, facade putty materials, decorative putty mixtures, adhesive materials for tiling facings, grouting compounds, adhesive mixtures for fixing insulation, mounting adhesives for building envelopes from gypsum plasterboards, gypsum boards and cellular concrete blocks, self-leveling self-leveling floors, rough levelers, reinforced floor mixtures, thermal insulation Floor screeds, assembly and masonry mixes for ceramic, silicate and clinker bricks.
6. Dry mortar containing a regulator of rheological properties according to one or more paragraphs. 1-4, characterized in that the mixture contains from about 0.01 to 0.03 wt. % regulator of rheological properties based on the weight of the dry mixture.
7. Dry mortar, including a binder, filler, characterized in that it contains gypsum as a binder, contains limestone powder as a filler, additionally contains an alkalinity regulator - slaked lime, a filler - quartz sand, a water-retaining additive - 2-hydroxyethyl methylcellulose , the pore-forming agent is sodium dodecyl sulfate, the setting retarder is L - (+) - 2,3-dihydroxybutanedioic acid, in addition, it additionally contains a rheological properties regulator one by one and and several paragraphs. 1-5, in the following ratio of components, wt. %:
Plaster of construction 40-55 Limestone flour 10-35 Slaked lime 0.8-2.6 Quartz sand 7-49 2-hydroxyethyl methyl cellulose 0.15-0.22 Sodium dodecyl sulfate 0.01-0.03 L - (+) - 2,3-dihydroxybutanedioic acid 0.03-0.12 Rheological Regulator 0.01-0.03
8. The dry building mixture according to claim 7, characterized in that the mixture contains the specified sand silica fraction 0-0.63 mm
RU2017112223A 2017-04-10 2017-04-10 Rheology regulator for inorganic binder-based dispersion systems RU2659432C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2017112223A RU2659432C1 (en) 2017-04-10 2017-04-10 Rheology regulator for inorganic binder-based dispersion systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2017112223A RU2659432C1 (en) 2017-04-10 2017-04-10 Rheology regulator for inorganic binder-based dispersion systems

Publications (1)

Publication Number Publication Date
RU2659432C1 true RU2659432C1 (en) 2018-07-02

Family

ID=62816034

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2017112223A RU2659432C1 (en) 2017-04-10 2017-04-10 Rheology regulator for inorganic binder-based dispersion systems

Country Status (1)

Country Link
RU (1) RU2659432C1 (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EA006031B1 (en) * 2003-03-20 2005-08-25 Сергей Алексеевич Зубехин Foaming agent for cellular concrete, a method for manufacturing a foaming agent and a method for producing aerated concrete on its basis
RU2004114276A (en) * 2001-10-09 2005-10-27 Геркулес Инкорпорейтед (Us) Sverhplastifitsiruyuschaya additive for concrete and self-leveling compounds
RU2006141696A (en) * 2004-04-27 2008-06-10 Геркулес Инкорпорейтед (Us) Cement-based systems in which use water-containing substances obtained from white cotton lines
RU2337080C2 (en) * 2003-03-27 2008-10-27 Ваккер Хеми Аг Dispersants
RU2443649C2 (en) * 2007-01-09 2012-02-27 Коатекс С.А.С. Application of rheological additive during vibration compaction treatment of water-based composition and hydraulic binder and produced composition
RU2011129853A (en) * 2008-12-22 2013-03-20 Ваккер Хеми Аг Acid resistant, hydraulic graving compositions
WO2013163009A1 (en) * 2012-04-27 2013-10-31 United States Gypsum Company Dimensionally stable geopolymer composition and method
RU2520105C2 (en) * 2008-09-02 2014-06-20 Констракшн Рисёрч Энд Текнолоджи Гмбх Plasticiser-containing hardening accelerator composition
WO2014131778A1 (en) * 2013-02-26 2014-09-04 Construction Research & Technology Gmbh Additive for hydraulically setting compounds
RU2550359C2 (en) * 2009-09-02 2015-05-10 БАСФ Констракшн Полимерс ГмбХ Formulation and using it

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2004114276A (en) * 2001-10-09 2005-10-27 Геркулес Инкорпорейтед (Us) Sverhplastifitsiruyuschaya additive for concrete and self-leveling compounds
EA006031B1 (en) * 2003-03-20 2005-08-25 Сергей Алексеевич Зубехин Foaming agent for cellular concrete, a method for manufacturing a foaming agent and a method for producing aerated concrete on its basis
RU2337080C2 (en) * 2003-03-27 2008-10-27 Ваккер Хеми Аг Dispersants
RU2006141696A (en) * 2004-04-27 2008-06-10 Геркулес Инкорпорейтед (Us) Cement-based systems in which use water-containing substances obtained from white cotton lines
RU2443649C2 (en) * 2007-01-09 2012-02-27 Коатекс С.А.С. Application of rheological additive during vibration compaction treatment of water-based composition and hydraulic binder and produced composition
RU2520105C2 (en) * 2008-09-02 2014-06-20 Констракшн Рисёрч Энд Текнолоджи Гмбх Plasticiser-containing hardening accelerator composition
RU2011129853A (en) * 2008-12-22 2013-03-20 Ваккер Хеми Аг Acid resistant, hydraulic graving compositions
RU2550359C2 (en) * 2009-09-02 2015-05-10 БАСФ Констракшн Полимерс ГмбХ Formulation and using it
WO2013163009A1 (en) * 2012-04-27 2013-10-31 United States Gypsum Company Dimensionally stable geopolymer composition and method
WO2014131778A1 (en) * 2013-02-26 2014-09-04 Construction Research & Technology Gmbh Additive for hydraulically setting compounds

Similar Documents

Publication Publication Date Title
US3232777A (en) Cementitious composition and method of preparation
CA2478323C (en) High strength flooring compositions
US5277712A (en) Dry mix-type joint compounds, compositions therefrom and methods for filling drywall joints with same
US3030258A (en) Dry cement composition comprising portland cement, methyl cellulose, and polyvinyl alcohol, and method of installing tile with same
EP1903014B1 (en) Concrete composition with reduced shrinkage
CA2578055C (en) Flexible hydraulic compositions
JP4725742B2 (en) Hydraulic composition
US5366550A (en) Latex modified cement-based thin set adhesive
EP0008094B1 (en) Additive for concrete or cement mortar and its use as pumping aid
Ramachandran et al. Superplasticizers
US5075358A (en) Multiple purpose patching composition
AU2008201088B2 (en) Additive for dewaterable slurry
US4741777A (en) Dry mix for high workability stuccos and mortars
JP2007534605A (en) Cement mortar for tiles using moisture retention agent
US5622558A (en) Drying shrinkage cement admixture
US5185389A (en) Latex modified mortar and concrete
DE102011078531A1 (en) Gypsum-containing building materials
EP0542888A1 (en) Complemented cement mixed with selected aggregates.
JP2010535700A (en) Rheology control additive for dry cast cement composition
US7326478B2 (en) Cement binder based plate
US20070125273A1 (en) Lightweight concrete mix and method of using same
US7419544B2 (en) Additive for dewaterable slurry and slurry incorporating same
US7699928B2 (en) Sprayable and pumpable phosphate cement
US8801851B2 (en) Foamed concrete
CN101555106B (en) Composite cementitious material and ground self-leveling mortar using same