CN114644494A - Flexible light leveling mortar and preparation method and application thereof - Google Patents
Flexible light leveling mortar and preparation method and application thereof Download PDFInfo
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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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
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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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/22—Glass ; Devitrified glass
- C04B14/24—Glass ; Devitrified glass porous, e.g. foamed glass
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/12—Nitrogen containing compounds organic derivatives of hydrazine
- C04B24/124—Amides
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2641—Polyacrylates; Polymethacrylates
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2652—Nitrogen containing polymers, e.g. polyacrylamides, polyacrylonitriles
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2676—Polystyrenes
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/38—Polysaccharides or derivatives thereof
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/38—Polysaccharides or derivatives thereof
- C04B24/383—Cellulose or derivatives thereof
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/40—Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
- C04B24/42—Organo-silicon compounds
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/0885—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements specially adapted for being adhesively fixed to the wall; Fastening means therefor; Fixing by means of plastics materials hardening after application
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- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/65—Water proofers or repellants
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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
- 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
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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
- 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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- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Civil Engineering (AREA)
- Inorganic Chemistry (AREA)
- Architecture (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to the field of building materials, in particular to flexible light leveling mortar and a preparation method and application thereof. Comprises the following components in percentage by weight of 1: (3-4) material A and material B, wherein: the material A comprises the following raw materials in parts by weight: 0.2-0.3 part of preservative, 0.1-0.3 part of defoaming agent and 30-50 parts of polymer emulsion; the material B comprises the following raw materials in parts by weight: 25-30 parts of cement, 5-10 parts of fly ash, 60-70 parts of filler, 0.15-0.25 part of cellulose ether, 0.5-1 part of viscosity-reducing slipping agent and the like. The flexible light leveling mortar has improved adhesion, flexibility, leveling property, constructability and decorative effect with the old ceramic tile, and can be used for renovating and leveling the old ceramic tile. Thereby avoiding the phenomena of cracking, bulging and falling caused by insufficient bonding force with the old ceramic tile, insufficient flexibility, insufficient weather resistance, excessive layered interface and the like easily caused by the treatment of the traditional technical measures.
Description
Technical Field
The invention relates to the field of building materials, in particular to flexible light leveling mortar and a preparation method and application thereof.
Background
The existing building area of the existing outer wall of China with ceramic tiles or mosaics pasted is very large, on one hand, the old veneers are more or less cracked and fall off due to unreasonable material matching, long time and other reasons, which greatly affects the appearance of the city and the life safety of people and needs to be repaired; in addition, the demand of beautiful projects such as cities makes the architectural decoration more and more attractive, so that the existing architectural modification technology for ceramic tile renovation has a large market. On the other hand, when the original building does not have external heat preservation and needs energy-saving reconstruction, the ceramic tile veneer also needs to be processed to provide a solid base layer for the external heat preservation and energy-saving reconstruction.
If the ceramic tile is integrally removed, the integral leveling is needed after the removal, so that the scheme has high cost, long period and great influence; if the local repair is carried out on the ceramic tile, the problem of unattractive patched repair exists, and the unrepaired part still has potential safety hazard and is necessarily in a state of continuous problem-causing and continuous repair. Therefore, the existing common renovation technology is to perform integral treatment on the basis of the original ceramic tile facing, and two technical schemes are generally adopted: firstly, processing old ceramic tiles by adopting a ceramic tile renovating interface agent, scraping 2-3 times of conventional outer wall waterproof putty, and finally performing coating facing construction, wherein a wall body with poor flatness can perform a plastering mortar leveling layer under the putty layer, and the method has the defects of high construction cost and long period caused by a large number of construction layers, and hidden troubles exist in the stability of adjacent layer materials caused by a large number of interfaces; in addition, the interface agent is generally treated by using low-cost glue solutions such as polyvinyl alcohol glue, white latex and the like, the water resistance and the weather resistance are seriously insufficient, in addition, the adhesion and the flexibility of the plastering mortar and the common putty are generally insufficient, the problems of hollowing, cracking and falling can occur within two to three years of the application life, the subsequent maintenance is needed, and the resources are greatly wasted; the second technique is that firstly the special ceramic tile renovating putty is adopted to treat the original ceramic tile veneer, and then the matched exterior wall water-resistant putty is used for leveling, the defects are that the products are not uniform, the bonding force of a plurality of products to the ceramic tile is poor, the flexibility is not enough, the phenomena of cracking and falling are caused, in addition, the leveling property is not enough, the construction is required for 2-3 times, even one more plastering mortar is required to be added for leveling, the working efficiency is low, the construction cost is improved, and the construction period is long.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is already known to a person skilled in the art.
Disclosure of Invention
Object of the Invention
In order to solve the problems, the invention aims to provide flexible light leveling mortar and a preparation method and application thereof.
The flexible light leveling mortar has the characteristics of high bonding strength, high flexibility, high leveling property and low viscosity, and can have strong adhesive force with various ceramic tile base layers in dry and wet states so as not to be separated easily; excellent flexibility, can not only adapt to the deformation of the base layer, but also keep excellent crack resistance when being smeared; the thick-layer putty has the advantages of light weight, moderate viscosity, excellent leveling property and excellent leveling property, the thickness can reach 3-10mm by one-time batch smearing without slipping, the requirement of scraping a fine and smooth surface by a large thick bar can be met, the leveling surface can meet the requirement of direct construction of thick paint, and a putty leveling layer is not needed. Therefore, the construction process can be greatly reduced, the cost is reduced, and the working efficiency is improved. If the external thermal insulation system of the building external wall is constructed again on the leveling mortar, when the thickness of the mortar is more than 2mm, a solid base layer meeting the standard strength requirement can still be provided. When the flexible light leveling mortar is constructed, the effect of pressing the alkali-resistant glass fiber mesh cloth which meets the standard of external thermal insulation products on the surface of the mortar is more ideal.
Solution scheme
In order to achieve the purpose of the invention, the embodiment of the invention provides flexible light leveling mortar, which comprises the following components in percentage by weight: (3-4) material A and material B, wherein:
the material A comprises the following raw materials in parts by weight: 0.2-0.3 part of preservative, 0.1-0.3 part of defoaming agent and 30-50 parts of polymer emulsion;
the material B comprises the following raw materials in parts by weight: 25-30 parts of cement, 5-10 parts of fly ash, 60-70 parts of filler, 0.15-0.25 part of cellulose ether, 0.5-1 part of viscosity-reducing slipping agent, 0-0.2 part of high-strength fiber, 0-5 parts of vitrified micro bubbles and 0-0.5 part of water repellent;
further, the material A comprises the following raw materials in parts by weight: 0.2-0.3 part of preservative, 0.1-0.3 part of defoaming agent and 35-45 parts of polymer emulsion;
optionally, the material a comprises the following raw materials in parts by weight: 0.2-0.3 part of preservative, 0.2-0.3 part of defoaming agent and 40-45 parts of polymer emulsion;
optionally, the material a comprises the following raw materials in parts by weight: 0.2 part of preservative, 0.3 part of defoaming agent and 40-45 parts of polymer emulsion;
optionally, the material a comprises the following raw materials in parts by weight: 0.2 part by weight of preservative, 0.3 part by weight of defoaming agent and 45 parts by weight of polymer emulsion;
optionally, the material A also comprises water, and the adding amount of the water is to make the material A complement to 100 parts by weight.
Further, in the material A, the polymer emulsion is a waterproof acrylic emulsion, optionally a waterproof styrene-acrylate copolymer emulsion (called styrene-acrylate solution for short), optionally, the viscosity of the polymer emulsion is 500-2000mPa.s, optionally, the viscosity is 500-1500 mPa.s. The waterproof acrylic emulsion comprises elastic waterproof acrylic emulsion, such as elastic waterproof styrene-acrylate copolymer emulsion, and can be elastic waterproof acrylic emulsion BLJ-953B with viscosity of 500-1500mPa.s, manufactured by Shanghai Baulijia chemical Co. The viscosity value was measured at 23 ℃ by using an NDJ-1 type rotary viscometer, specifically, a spindle 3# using an NDJ-1 type rotary viscometer at a spindle rotation speed of 60 rpm.
Further, in the material A, the preservative is a preservative in a universal liquid tank;
further, in the material A, the defoaming agent is a mineral oil defoaming agent.
Further, the material B comprises the following raw materials in parts by weight: 25-30 parts of cement, 5-10 parts of fly ash, 60-70 parts of filler, 0.15-0.25 part of cellulose ether, 0.5-1 part of viscosity-reducing slipping agent, 0.1-0.2 part of anhydrous superfine high-strength fiber, 3-5 parts of vitrified micro bubbles and 0.1-0.5 part of water repellent;
further, the material B comprises the following raw materials in parts by weight: 26 parts of cement, 5.7 parts of fly ash, 63 parts of filler, 0.2 part of cellulose ether, 0.6 part of viscosity-reducing slipping agent, 0.2 part of high-strength fiber, 4 parts of vitrified micro bubbles and 0.3 part of water repellent.
Further, the filler is scrubbing sand, optionally, the scrubbing sand comprises 40-70 mesh scrubbing sand, 70-100 mesh scrubbing sand and 100-200 mesh scrubbing sand, and the weight ratio is 10-15: 35-55: 5 to 10. Preferably, the dried scouring sand produced in Chengdu area. The scouring sand is raw sand for casting, is made up by using natural silica sand through the processes of scouring, water-washing, grading and drying, and SiO2The content is as high as more than 98 percent, the mud content is less than 0.2 percent, the particles are full, the strength is extremely high, and the filler belongs to high-quality filler. The inventor can well meet the construction requirement of 3-10mm thickness of one-time plastering by continuous gradation of three meshes, and the surface is smooth and fine without cracking; when only coarse sand or medium sand is used, the fineness of the mortar is poor, and the surface can not meet the requirements of coating construction; when only fine sand is used, the leveling property is insufficient, and the fine sand is easy to crack, namely, the continuous grading of the mesh number of each component of the filler is a specific selection made by the inventor for the flexible light leveling mortar with a specific purpose.
Further, the viscosity-reducing slipping agent comprises the following components in a mass ratio of 0.01-0.02: 0.05-0.1: 0.1-0.3: 0.3-0.5 of air entraining agent, starch ether, erucamide and polyvinylpyrrolidone; preferably: the air entraining agent is FLOTAGE AE-1 air entraining agent which is produced by Guangdong Longhu science and technology GmbH and has small bubbles and good foam stability; the starch ether is OPAGEL FP9 starch ether which is produced by Ivy company in the Netherlands and has super-strong thickening property, thixotropy and stronger effect; the erucamide is white powder, and the amide content is more than or equal to 98 percent; the polyvinylpyrrolidone is a white powdery industrial product with a K value of 30 and a molecular weight of 45000-58000.
Further, the cement is portland cement with a strength grade of 42.5MPa, optionally ordinary portland cement or white portland cement with a strength grade of 42.5 MPa.
Further, the fly ash is first-grade or second-grade fly ash.
Further, the cellulose ether is a cellulose ether having a viscosity of 20000-; such as: cellulose ether Combizell 30011C with a viscosity of 25000-35000mPa.s, manufactured by Hercules chemical Limited.
Further, the high-strength fiber is a modified polypropylene fiber, preferably a modified polypropylene fiber with a diameter of 20 μm, a breaking strength of not less than 400MPa, an initial modulus of not less than 3.5GPa and a length of 5mm, which is produced by Beijing Zhongjinjian fiber construction science and technology Limited.
Furthermore, the vitrified micro bubbles have the granularity of 70-90 meshes and capacityThe weight of the material is 90-120kg/m3。
Further, the water repellent is a silane-based water repellent, preferably SEAL80 water repellent manufactured by Acksonobel.
Further, the weight ratio of the material A to the material B is 1: 4.
On the other hand, the preparation method of the flexible light leveling mortar comprises the following steps:
1) mixing the preservative, the defoaming agent and the polymer emulsion in the material A with water according to a proportion;
2) mixing the raw materials of the material B;
3) and (3) mixing the materials in the steps 1) and 2) in proportion to prepare the flexible light leveling mortar.
In another aspect, the flexible light leveling mortar or the flexible light leveling mortar prepared by the preparation method is applied to the renovation and leveling of old ceramic tiles.
Advantageous effects
(1) According to the invention, the acrylic emulsion with specific viscosity is selected as a main film forming substance in the material A, so that the mortar and the old ceramic tile have strong adhesive force without damaging the old wall body, and the mortar keeps high flexibility and is not easy to bulge, crack or fall off.
(2) The cellulose ether with specific viscosity, high thixotropy and sag resistance, and excellent wettability and water retention is selected from the material B, and the viscosity-reducing slipping agent is added to further improve the product workability. Wherein the air entraining agent has the functions of reducing the density of the product to improve the smoothness of construction and improve the one-time batch smearing thickness of the product; the starch ether plays a role in quickly thickening, reducing viscosity and preventing sagging; the erucamide has the effects of reducing viscosity, having soft hand feeling, being smooth to operate and being capable of smoothing the surface; the polyvinylpyrrolidone has good dispersibility and solubility, has good affinity and bonding force with plastics, metals, ceramic tiles and glass, can provide better initial bonding force with old ceramic tiles after being added, and is also an excipient capable of keeping mortar with a certain plastering thickness. The finally formed mortar has soft and smooth hand feeling, is adhered to a wall, does not stick a bar, is well glazed on the wall, has moderate viscosity and better thixotropy of the whole formula of the mortar, is convenient to perform one-time plastering for 3-10mm without slipping, can be leveled on the bar, is full and continuous after drying, has no knife mark, does not need to be polished, and has the surface meeting the requirements of thick coating construction.
The material B of the invention also specifically selects the fineness of the filler, and the coarse, medium and fine continuous gradation of the high-quality scouring sand greatly increases the thickness of the once plastering of the flexible light leveling mortar, can not crack due to large thickness, and has fine and compact surface;
the vitrified micro bubbles in the material B are expanded perlite micro bubbles with a certain vitrification degree on the surface, have better surface smoothness and sphericity, can form a ball effect by adding the vitrified micro bubbles, can reduce the adhesion of mortar to tools, reduce the volume density of leveling mortar, reduce the dead weight feeling of mortar construction, reduce the drying shrinkage rate of the mortar, have the functions of self adsorption, transportation and moisture release, and are beneficial to the one-time thick smearing and polishing performance of the mortar.
In addition, the addition of the silane-based water repellent in the material B can reduce the viscosity of the mortar, improve the water resistance and freeze-thaw resistance of the mortar and improve the compactness of the mortar, so that the surface is more easily calendered and densified.
(3) The flexible light leveling mortar has improved adhesion, flexibility, leveling property, constructability and decorative effect with the old ceramic tile, and can be used for renovating and leveling the old ceramic tile. Thereby avoiding the phenomena of cracking, bulging and falling caused by insufficient bonding force with the old ceramic tile, insufficient flexibility, insufficient weather resistance, excessive layered interface and the like easily caused by the treatment of the traditional technical measures. The problems that the leveling performance of the traditional technical measures is generally insufficient and the construction process is complicated can be solved.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 a part of the embodiments of the present invention, but not all of the 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. Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details. In some embodiments, materials, elements, methods, means, and the like that are well known to those skilled in the art are not described in detail in order to not unnecessarily obscure the present invention.
In the embodiment of the invention, all the raw materials are commercial products, for example, the used preservative is a general liquid in-tank preservative GT of Soler, the defoamer is a mineral oil defoamer NXZ of Kaihuan chemical industry, the emulsion is an elastic waterproof acrylic emulsion BLJ-953B with the viscosity of 500-; the air entraining agent in the viscosity-reducing slipping agent is FLOTAGE AE-1 air entraining agent of Guangdong lake science and technology corporation, starch ether is OPAGEL FP9 starch ether of Netherlands, Erythropamide is Croda ER-CH of British Poa, polyvinylpyrrolidone is PVP K30 of Hangzhou Weiqi nanometer material corporation, the high-strength fiber is modified polypropylene fiber with the length of 5mm produced by Beijing Zhonghuan spinning science and technology corporation, and the water repellent is SEAL80 silane-based water repellent produced by Acksonobel corporation.
EXAMPLE 1 preparation of Material A
The materials A1, A2 and A3 were prepared from the materials A listed in Table 1 by mixing them uniformly.
TABLE 1 preparation formulation (wt%) of Flexible lightweight leveling mortar Material A
| Raw material number | Name of raw materials | Material A1 | Material A2 | Material A3 |
| 1 | Water (I) | 64.5 | 59.5 | 54.5 |
| 2 | Preservative | 0.2 | 0.2 | 0.2 |
| 3 | Defoaming agent | 0.3 | 0.3 | 0.3 |
| 4 | Emulsion and method of making | 35 | 40 | 45 |
EXAMPLE 2 preparation of Material B
The raw materials are uniformly mixed according to the following mixture ratio to obtain a material B, wherein the mixture ratio is as follows: 26kg of cement, 5.7 kg of first-level fly ash, 0.2kg of high-strength fiber, 12 kg of scrubbing sand of 40-70 meshes, 43 kg of scrubbing sand of 70-100 meshes, 8 kg of scrubbing sand of 100-200 meshes, 0.2kg of 30011C cellulose ether, 0.6kg of viscosity-reducing slipping agent, 4kg of vitrified micro-beads, 0.3kg of SEAL80 silane-based water repellent and 100kg of total weight. Wherein 0.6kg of viscosity-reducing slipping agent is prepared according to the following formula: 0.01kg of AE-1 air entraining agent, 0.06kg of FP9 starch ether, 0.2kg of ER-CH erucamide and 0.33kg of K30 polyvinylpyrrolidone.
Example 3 preparation of a Flexible lightweight leveling mortar
The 3 materials A (namely the material A1, the material A2 and the material A3) obtained in the example 1 and the material B obtained in the example 2 are uniformly stirred according to the mass ratio of 1:4, and the main properties of the obtained flexible light leveling mortar are detailed in a table 2.
TABLE 2 Main Properties of Flexible lightweight leveling mortar
Example 4 comparative experiment
(1) Experimental comparison of different grades of filler, one of the three scouring sands of example 2 was selected for formulation, the other steps were carried out to prepare a flexible lightweight leveling mortar, fully referring to the methods of examples 1-3, and the mortar obtained was compared with the mortar obtained in example 3, with the results shown in table 3. The inventor can well meet the construction requirement of 3-10mm of one-time plastering thickness by continuously grading three meshes, and does not crack; when only coarse sand or medium sand is used, the fineness of the mortar is poor, and the surface can not meet the requirements of coating construction; when only fine sand is used, the leveling property is not enough and the crack is easy to occur.
TABLE 3 experimental comparison of different grades of fillers
(2) The different viscosities of the emulsion are compared with the experiments of the leveling mortar, and after the emulsion is mixed with the ordinary portland cement, the mortar can be screened within the construction time of not less than 1 hour; the detection of the obtained mortar index needs to be simultaneously detected by two items in the standard JC/T1017-: A) calcium ion stability (0.5% CaCl)2Solution) has no layering, no precipitation and no flocculation after 48 hours; B) alkali resistance (0.1% NaOH solution) for 168h, no bubble and no ulcer; and referring to the methods of examples 1 to 3, the flexible lightweight leveling mortar was prepared by changing only the viscosity of the emulsion, and the properties of the obtained flexible lightweight leveling mortar are shown in table 4.
TABLE 4 experimental comparison of different viscosities of emulsions
In the embodiment, the thickness of the mortar is relatively small due to one batch smearing, and the addition amount of the corresponding powder is relatively high, so that certain requirements are imposed on the powder tolerance of the emulsion. The traditional waterproof elastic emulsion is a brushing process in application, has high consistency and very thin construction thickness, so that the powder tolerance of most emulsions is not very high. However, if the powder mixing amount is required to be very high and the consistency is very small during application, the emulsions obviously show the defects of high construction viscosity, obvious thickening, short service time and the like, and cannot be used. Four types of waterproof emulsions commonly available on the market and emulsions in the examples are selected to test the tolerance of the powder, the powder is prepared by cement and half of 70-100 mesh scouring sand respectively, then the powder is mixed with 50% of emulsion water solution, the ratio of the powder to the liquid is up to 4:1, and the test results are shown in table 5. It follows that not all emulsions can achieve such high powder tolerances, and the emulsions of the present invention are particularly preferred.
TABLE 5 Experimental testing of powder tolerance of different emulsions
(3) Using the methods of examples 1 to 3, only the viscosity of the cellulose ether was varied and the properties of the resulting flexible, lightweight leveling mortars were as shown in Table 6.
TABLE 6 Experimental comparison of different viscosities of cellulose ethers
As can be seen from Table 6, the flexible light leveling mortar obtained with the cellulose ether of 25000-35000mPa.s is more excellent.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The flexible light leveling mortar is characterized by comprising the following components in percentage by weight of 1: (3-4) material A and material B, wherein:
the material A comprises the following raw materials in parts by weight: 0.2-0.3 part of preservative, 0.1-0.3 part of defoaming agent and 30-50 parts of polymer emulsion;
the material B comprises the following raw materials in parts by weight: 25-30 parts of cement, 5-10 parts of fly ash, 60-70 parts of filler, 0.15-0.25 part of cellulose ether, 0.5-1 part of viscosity-reducing slipping agent, 0-0.2 part of high-strength fiber, 0-5 parts of vitrified micro bubbles and 0-0.5 part of water repellent.
2. The flexible light leveling mortar according to claim 1, wherein the material A comprises the following raw materials in parts by weight: 0.2 part of preservative, 0.3 part of defoaming agent and 40-45 parts of polymer emulsion;
and/or the material A also comprises water, and the adding amount of the water is to make the material A complement to 100 parts by weight.
3. Flexible light leveling mortar according to claim 2, characterized in that in the material A,
the polymer emulsion is waterproof acrylic emulsion, and the viscosity of the polymer emulsion is 500-2000 mPa.s;
and/or the preservative is a universal preservative in a liquid tank;
and/or the defoaming agent is a mineral oil defoaming agent.
4. The flexible light leveling mortar of claim 1, wherein the material B comprises the following raw materials in parts by weight: 26 parts of cement, 5.7 parts of fly ash, 63 parts of filler, 0.2 part of cellulose ether, 0.6 part of viscosity-reducing slipping agent, 0.2 part of high-strength fiber, 4 parts of vitrified micro bubbles and 0.3 part of water repellent.
5. The flexible light leveling mortar as claimed in claim 1, wherein the filler is scouring sand, the scouring sand comprises 40-70 mesh scouring sand, 70-100 mesh scouring sand and 100-200 mesh scouring sand, and the weight ratio of the scouring sand to the scouring sand is 10-15: 35-55: 5 to 10.
6. The flexible light leveling mortar according to any one of claims 1 to 5, wherein the viscosity-reducing slipping agent comprises the following components in a mass ratio of 0.01-0.02: 0.05-0.1: 0.1-0.3: 0.3-0.5 of air entraining agent, starch ether, erucamide and polyvinylpyrrolidone.
7. Flexible light leveling mortar according to one of the claims 1 to 5, characterized in that the cement is a Portland cement with a strength rating of 42.5 MPa;
and/or the fly ash is first-grade or second-grade fly ash;
and/or the cellulose ether is a cellulose ether with viscosity of 20000-;
and/or, the high-strength fiber is a modified polypropylene fiber;
and/or the vitrified micro bubbles have the granularity of 70-90 meshes and the volume weight of 90-120kg/m3；
And/or the water repellent is a silane-based water repellent.
8. Flexible light leveling mortar according to claims 1 to 5, characterized in that the weight ratio of material A and material B is 1: 4.
9. The preparation method of the flexible light-weight leveling mortar of any one of claims 1 to 8, which is characterized by comprising the following steps:
1) mixing the preservative, the defoaming agent and the polymer emulsion in the material A with water according to a certain proportion;
2) mixing the raw materials of the material B;
3) and (3) mixing the materials in the steps 1) and 2) in proportion to prepare the flexible light leveling mortar.
10. Use of a flexible lightweight leveling mortar according to any one of claims 1 to 8 or prepared by the preparation method according to claim 9 for the renovation of old ceramic tiles.
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| US7967908B1 (en) * | 2010-11-15 | 2011-06-28 | Jorge G Chiappo | Light-weight composition and mix for masonry, mortar and stucco |
| CN107673687A (en) * | 2016-08-02 | 2018-02-09 | 北京悦筑新天节能科技有限公司 | A kind of flexible water mortar and its preparation method and application |
| CN109851289A (en) * | 2019-02-11 | 2019-06-07 | 江苏南通二建集团有限公司 | Levelling anticracking grout powder of interior wall thin-coat plaster and preparation method thereof |
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2022
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Patent Citations (7)
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| JPS5684358A (en) * | 1979-12-14 | 1981-07-09 | Onoda Cement Co Ltd | Cementitious self leveling floor material |
| CN101503284A (en) * | 2009-03-13 | 2009-08-12 | 中铁二院工程集团有限责任公司 | Anti-erosion agent and masonry mortar material containing the same |
| CN101691288A (en) * | 2009-09-30 | 2010-04-07 | 谢日清 | Lightweight leveling mortar |
| CN101857404A (en) * | 2010-06-08 | 2010-10-13 | 上海英硕聚合物材料有限公司 | Light mortar with high performance and low heat conduction |
| US7967908B1 (en) * | 2010-11-15 | 2011-06-28 | Jorge G Chiappo | Light-weight composition and mix for masonry, mortar and stucco |
| CN107673687A (en) * | 2016-08-02 | 2018-02-09 | 北京悦筑新天节能科技有限公司 | A kind of flexible water mortar and its preparation method and application |
| CN109851289A (en) * | 2019-02-11 | 2019-06-07 | 江苏南通二建集团有限公司 | Levelling anticracking grout powder of interior wall thin-coat plaster and preparation method thereof |
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