CN114195450A - Waterproof leveling mortar and preparation method and application thereof - Google Patents

Waterproof leveling mortar and preparation method and application thereof Download PDF

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Publication number
CN114195450A
CN114195450A CN202111491116.6A CN202111491116A CN114195450A CN 114195450 A CN114195450 A CN 114195450A CN 202111491116 A CN202111491116 A CN 202111491116A CN 114195450 A CN114195450 A CN 114195450A
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China
Prior art keywords
component
waterproof
leveling mortar
cellulose
mortar
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CN202111491116.6A
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CN114195450B (en
Inventor
张瑜瑜
吴松涛
李金钟
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Yashi Chuanneng Technology Shijiazhuang Co ltd
Asia Cuanon Technology Shanghai Co Ltd
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Yashi Chuanneng Technology Shijiazhuang Co ltd
Asia Cuanon Technology Shanghai Co Ltd
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Priority to CN202111491116.6A priority Critical patent/CN114195450B/en
Publication of CN114195450A publication Critical patent/CN114195450A/en
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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
    • C04B28/02—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
    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/18—Waste materials; Refuse organic
    • C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
    • 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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C04B20/023—Chemical treatment
    • 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
    • C04B24/2682—Halogen containing polymers, e.g. PVC
    • 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
    • C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66—Sealings
    • 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
    • E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
    • 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
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/34—Non-shrinking or non-cracking materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/76—Use at unusual temperatures, e.g. sub-zero
    • 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

Abstract

The invention provides waterproof leveling mortar and a preparation method and application thereof, and relates to the technical field of building materials. The waterproof leveling mortar comprises a component A and a component B, wherein the component A is mainly prepared from cement, modified aerogel cellulose, coarse sand and sand powder, and the component B is mainly prepared from fluorine-containing emulsion, an auxiliary agent and water, wherein the waterproof performance of the waterproof leveling mortar can be improved due to the addition of the modified aerogel cellulose, and the bonding strength of the waterproof leveling mortar in a low-temperature environment can be effectively improved due to certain frost resistance of the waterproof leveling mortar; on one hand, the fluorine-containing emulsion can improve the waterproof performance of the mortar, and meanwhile, as the fluorine-containing emulsion has low MFFT, the low-temperature film forming is easier, the toughness of the mortar can be improved, and the crack resistance of the mortar in a low-temperature environment can be improved. The raw materials of the waterproof leveling mortar have good matching relationship, so that the prepared waterproof leveling mortar has excellent waterproof and anti-seepage performance, and also has good strength under low temperature conditions and is not easy to crack.

Description

Waterproof leveling mortar and preparation method and application thereof
Technical Field
The invention relates to the technical field of building materials, in particular to waterproof leveling mortar and a preparation method and application thereof.
Background
With the wide application of various novel wall materials (such as concrete hollow blocks, aerated concrete blocks, ceramsite concrete hollow blocks, clay hollow bricks and the like), solid clay bricks which are used in large quantities in the past are forbidden to be used obviously. The application of the novel wall material can achieve the purposes of recycling materials and reducing damage to the natural environment, but the novel wall material generally has the defects of large porosity, strong water absorption, poor impermeability and the like. The existing high-rise buildings are numerous, rainwater in winter and rainy season often continuously flows down on the outer wall for a few days, the wind pressure of the outer wall in winter is high, and the requirement on the permeability resistance of the outer wall is higher. Moreover, the existing exterior wall construction is not usually subjected to waterproof treatment or only is reinforced by rolling a layer of interfacial agent, and the actual waterproof effect is not achieved, and the construction process is not perfect, so that the hidden danger of exterior wall leakage exists no matter exterior wall heat insulation construction or coating construction is carried out in the later stage. Therefore, the outer wall impermeability is an important problem which needs to be solved urgently in the construction of the prior art. Further, it has been found that the cement in mortar products does not function normally due to low temperature (5 ℃ or lower) in winter, and thus has a problem of low strength.
Accordingly, the present invention is directed to solving at least one of the problems set forth above.
Disclosure of Invention
The invention aims to provide waterproof leveling mortar to solve the technical problems of poor impermeability and waterproof performance, low strength, easiness in cracking and the like of the existing wall material.
The second purpose of the invention is to provide a preparation method of the waterproof leveling mortar.
The third purpose of the invention is to provide the application of the waterproof leveling mortar.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the invention provides waterproof leveling mortar, which comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 1: (2-3);
wherein the component A comprises the following raw materials in percentage by mass, based on 100 percent of the component A:
35-50% of cement, 0.2-0.5% of modified aerogel cellulose, 40-60% of coarse sand and 4.8-20% of sand powder;
the component B comprises the following raw materials in percentage by mass, based on 100 percent of the component B in percentage by mass:
30-60% of fluorine-containing emulsion, 5-10% of auxiliary agent and 30-60% of water.
Further, on the basis of the above technical solution of the present invention, the preparation method of the modified aerogel cellulose comprises the following steps:
providing a modified emulsion formed by polydopamine and octadecylamine and cellulose nano-fibers;
mixing the cellulose nano-fiber with the modified emulsion, adjusting the pH value to 8.0-8.5, and then freeze-drying to obtain the modified aerogel cellulose.
Further, on the basis of the technical scheme of the invention, the mass ratio of polydopamine to octadecylamine in the modified emulsion is (1-2): 1;
preferably, in the step (a), the cellulose nanofibers have a particle size of 20 to 100 nm.
Further, on the basis of the technical scheme of the invention, the mass ratio of the cellulose nanofibers to the modified emulsion is 1: (2-5).
Furthermore, on the basis of the technical scheme of the invention, the temperature of freeze drying is-30 to-10 ℃, and the time of freeze drying is 18 to 36 hours.
Further, on the basis of the technical scheme of the invention, the granularity of the coarse sand is 70-140 meshes;
preferably, the coarse sand is quartz sand;
preferably, the granularity of the sand powder is 120-220 meshes.
Further, on the basis of the technical scheme of the invention, the Tg of the fluorine-containing emulsion is-20 to-10 ℃.
Further, on the basis of the technical scheme of the invention, the fluorine-containing emulsion comprises a fluorine-containing emulsion DF-20 and/or a fluorine-containing emulsion DF-M05A.
The invention provides a preparation method of the waterproof leveling mortar, which comprises the following steps:
and (3) mixing the raw materials of the component A and the raw materials of the component B to obtain the waterproof leveling mortar.
The invention provides application of the waterproof leveling mortar in the field of building construction.
Compared with the prior art, the invention has the following technical effects:
(1) the invention provides waterproof leveling mortar, which comprises a component A and a component B, wherein the component A is mainly prepared from cement, modified aerogel cellulose, coarse sand and sand powder, and the component B is mainly prepared from fluorine-containing emulsion, an auxiliary agent and water, wherein the waterproof performance of the waterproof leveling mortar can be improved by adding the modified aerogel cellulose, and the bonding strength of the waterproof leveling mortar in a low-temperature environment can be effectively improved due to certain frost resistance of the waterproof leveling mortar; on one hand, the fluorine-containing emulsion can improve the waterproof performance of the mortar, and meanwhile, as the fluorine-containing emulsion has low MFFT, the low-temperature film forming is easier, the toughness of the mortar can be improved, and the crack resistance of the mortar in a low-temperature environment can be improved. The raw materials of the waterproof leveling mortar have good matching relationship, so that the prepared waterproof leveling mortar has excellent waterproof and anti-seepage performance, and also has good strength under low temperature conditions and is not easy to crack.
(2) The invention provides a preparation method of the waterproof leveling mortar, which is simple to operate and stable in process.
(3) The invention provides the application of the waterproof leveling mortar, and in view of the advantages of the waterproof leveling mortar, the waterproof leveling mortar can be used as a wall material, can be applied to the field of building construction, can effectively prevent the problems of leakage and cracking of the outer wall of a building, and has good application prospect.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to embodiments and examples, but those skilled in the art will understand that the following embodiments and examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. Those who do not specify the conditions are performed according to the conventional conditions or the conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
According to a first aspect of the invention, the waterproof leveling mortar comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 1: (2-3);
wherein the component A comprises the following raw materials in percentage by mass, based on 100 percent of the component A:
35-50% of cement, 0.2-0.5% of modified aerogel cellulose, 40-60% of coarse sand and 4.8-20% of sand powder;
the component B comprises the following raw materials in percentage by mass, based on 100 percent of the component B in percentage by mass:
30-60% of fluorine-containing emulsion, 5-10% of auxiliary agent and 30-60% of water.
Specifically, the waterproof leveling mortar is bi-component mortar prepared from a powder component A and a liquid component B. The typical but non-limiting mass ratio of the A component to the B component is 1: 2. 1: 2.2, 1: 2.4, 1: 2.5, 1: 2.6, 1: 2.8 or 1: 3.0.
the cement in the A component may be of a kind commonly used in the art. The cement is typically, but not limited to, 35%, 36%, 38%, 40%, 42%, 44%, 45%, 46%, 48%, or 50% by mass.
The modified aerogel cellulose has good characteristics of super hydrophobicity, ultralow density, high porosity and the like, and can be applied to the waterproof leveling mortar, so that the waterproof performance of the waterproof leveling mortar can be improved, and the bonding strength of the waterproof leveling mortar in a low-temperature environment can be effectively improved due to certain frost resistance. Typical but non-limiting mass fractions of modified aerogel cellulose are 0.20%, 0.25%, 0.28%, 0.3%, 0.32%, 0.35%, 0.38%, 0.40%, 0.42%, 0.45%, 0.48%, or 0.50%.
The coarse sand and the sand powder are respectively used as aggregate and filler, and the reasonable matching of the aggregate and the filler can provide good compactness for a mortar system, reduce the water absorption of the system and improve the strength of the system. Grit typically, but not by way of limitation, has a mass fraction of 40%, 42%, 44%, 45%, 46%, 48%, 50%, 52%, 54%, 55%, 56%, 58% or 60%. The grit powder typically, but not by way of limitation, is 4.8%, 5%, 6%, 8%, 10%, 12%, 14%, 15%, 16%, 18% or 20% by mass.
The fluorine-containing emulsion in the component B can reduce the surface energy of the mortar and improve the waterproof performance on the one hand, and on the other hand, because the Minimum Film Forming Temperature (abbreviated as MFFT) is lower, the low-Temperature Film Forming is easier, the toughness of the mortar can be increased, and the crack resistance of the mortar in a low-Temperature environment can be improved. Typical but not limiting mass fractions of the fluorine-containing emulsion are 30%, 32%, 35%, 36%, 38%, 40%, 42%, 44%, 45%, 46%, 48%, 50%, 52%, 54%, 55%, 56%, 58% or 60%. The kind of the fluorine-containing emulsion is not particularly limited, and those commonly used in the art can be used.
The auxiliary agent in the component B is mainly used for improving the corresponding performance of the mortar in a certain aspect. Typical but not limiting mass fractions of auxiliaries are 5%, 6%, 7%, 8%, 9% or 10%. The kind of the auxiliary is not particularly limited, and the kind of the auxiliary commonly used in mortar in the art can be used.
Typical but non-limiting mass fractions of water in the B component are 30%, 32%, 35%, 36%, 38%, 40%, 42%, 44%, 45%, 46%, 48%, 50%, 52%, 54%, 55%, 56%, 58% or 60%.
The invention provides waterproof leveling mortar, which comprises a component A and a component B, wherein the component A is mainly prepared from cement, modified aerogel cellulose, coarse sand and sand powder, and the component B is mainly prepared from fluorine-containing emulsion, an auxiliary agent and water, wherein the waterproof performance of the waterproof leveling mortar can be improved by adding the modified aerogel cellulose, and the bonding strength of the waterproof leveling mortar in a low-temperature environment can be effectively improved due to certain frost resistance of the waterproof leveling mortar; on one hand, the fluorine-containing emulsion can improve the waterproof performance of the mortar, and meanwhile, as the fluorine-containing emulsion has low MFFT, the low-temperature film forming is easier, the toughness of the mortar can be improved, and the crack resistance of the mortar in a low-temperature environment can be improved. The raw materials of the waterproof leveling mortar have good matching relationship, so that the prepared waterproof leveling mortar has excellent waterproof and anti-seepage performance, also has good strength under low temperature condition, is not easy to crack, can be used as a leveling material, and is labor-saving and time-saving.
It should be noted that "comprising", "mainly made of … …" in the present invention means that it may comprise other materials in addition to the said materials, which give the said mortar different properties. In addition, the terms "comprising," "made primarily of … …," and "made of … …," as used herein, are intended to be interchangeable.
The modified aerogel cellulose is mainly prepared by performing hydrophobic modification on cellulose nanofibers.
As an alternative embodiment of the present invention, the preparation method of the modified aerogel cellulose comprises the following steps:
providing a modified emulsion formed by polydopamine and octadecylamine and cellulose nano-fibers;
mixing the cellulose nano-fiber with the modified emulsion, adjusting the pH value to 8.0-8.5, and then freeze-drying to obtain the modified aerogel cellulose.
Specifically, cellulose Nanofibers (NFC) are used as a substance to be modified, Polydopamine (PDA) in the modified emulsion is mainly used as an intermediate medium, Octadecylamine (ODA) is used as a hydrophobic modifier, and the cellulose nanofibers and the modified emulsion are mixed to enable the cellulose nanofibers to be completely immersed in the modified emulsion. The pH is adjusted to 8.0-8.5 in order to obtain a stretched structure of the cellulose nanofibres. And then freeze-drying is carried out, so that the aerogel cellulose is dried without destroying the internal structure, and the modified aerogel cellulose is obtained.
By adopting the preparation method, the modified aerogel cellulose with good characteristics of super hydrophobicity, super-low density, high porosity and the like can be obtained.
As an optional embodiment of the invention, the mass ratio of polydopamine to octadecylamine in the modified emulsion is (1-2): 1; the typical but non-limiting mass ratio of polydopamine to octadecylamine is 1: 1. 1.2: 1. 1.4: 1. 1.5: 1. 1.6: 1. 1.8: 1 or 2.0: 1.
cellulose nanofibers are commercially available. As an alternative embodiment of the present invention, the cellulose nanofibers have a particle size of 20 to 100 nm.
Typical, but non-limiting, cellulose nanofibers have a particle size of 20nm, 30nm, 40nm, 50nm, 60nm, 70nm, 80nm, 90nm, or 100 nm.
As an optional embodiment of the present invention, the mass ratio of the cellulose nanofibers to the modified emulsion is 1: (2-5). The typical but non-limiting mass ratio of cellulose nanofibers to modified emulsion is 1: 2. 1: 2.5, 1: 3. 1: 3.5, 1: 4. 1: 4.5 or 1: 5.
as an alternative embodiment of the invention, the temperature of freeze drying is-30 to-10 ℃, and the time of freeze drying is 18 to 36 hours.
Typical but not limiting freeze drying temperatures are-30 ℃, -25 ℃, -20 ℃, -15 ℃ or-10 ℃, and typical but not limiting freeze drying times are 18h, 20h, 22h, 24h, 26h, 28h, 30h, 32h, 34h or 36 h.
The cellulose structure of the prepared modified aerogel keeps integrity by further limiting the specific composition ratio of the modified emulsion, the ratio of the cellulose nano-fiber to the modified emulsion and the temperature and time of freeze drying.
The modified aerogel cellulose prepared by the specific preparation method has good hydrophobic property, low density and larger porosity.
The other raw materials of the waterproof leveling mortar are further optimized.
As an alternative embodiment of the invention, the grit is 70-140 mesh; grit typically, but not by way of limitation, has a particle size of 70 mesh, 80 mesh, 100 mesh, 120 mesh or 140 mesh.
In an alternative embodiment of the present invention, the grit is quartz sand.
As an optional embodiment of the invention, the granularity of the sand powder is 120-220 meshes. The grit typically, but not by way of limitation, is 120 mesh, 150 mesh, 180 mesh, 200 mesh or 220 mesh in size.
Through further limiting the grit size and the sand powder particle size, the grit and the sand powder achieve a good grading effect, and the mortar has good strength when matched with other raw materials.
As an alternative embodiment of the invention, the Tg of the fluorinated emulsion is between-20 and-10 ℃. Typical but not limiting Tg's of the fluorochemical emulsion are-20 deg.C, -18 deg.C, -16 deg.C, -15 deg.C, -14 deg.C, -12 deg.C, or-10 deg.C.
As an alternative embodiment of the present invention, the fluorine-containing emulsion comprises a fluorine-containing emulsion DF-20 and/or a fluorine-containing emulsion DF-M05A.
The fluorine-containing emulsion has more excellent waterproof performance and low-temperature film-forming performance by specifically limiting the Tg or the type of the fluorine-containing emulsion.
According to a second aspect of the present invention, there is also provided a preparation method of the above waterproof leveling mortar, comprising the following steps:
and (3) mixing the raw materials of the component A and the raw materials of the component B to obtain the waterproof leveling mortar.
The invention provides a preparation method of the waterproof leveling mortar, which is simple to operate and stable in process.
According to a third aspect of the invention, the application of the waterproof leveling mortar in building construction is also provided.
In view of the advantages of the waterproof leveling mortar, the waterproof leveling mortar can be used as a wall material, can be applied to the field of building construction, can effectively prevent the problems of leakage and cracking of the outer wall of a building, and has a good application prospect.
The present invention will be further described with reference to specific examples and comparative examples. The manufacturers and the types of the raw materials used in the method are shown in table 1, and the raw materials which are not shown in table 1 are all obtained by commercial purchase.
TABLE 1
Name (R) Performance parameter Manufacturer model
Polydopamine CAS No.:62-31-7 Merck
Octadecamine CAS No.:124-30-1 Merck
Cellulose nanofibers CAS No.:9004-34-6 Merck
Quartz sand / 70-140 mesh Shanghai Lei Xia
Sand powder / 120-grade 220-mesh Jiangxi Yao
Fluorine-containing emulsion DF-01 Dongfu chemical industry
Film forming aid Texanol Isman chemical engineering
Dispersing agent 1134 DOW
Wetting agent ANTI-TERRA-204 BYK
Example 1
The embodiment provides waterproof leveling mortar, which comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 1: 2.5;
wherein the component A comprises the following raw materials in percentage by mass, based on 100 percent of the component A:
40 percent of 42.5 ordinary Portland cement, 0.4 percent of modified aerogel cellulose, 45 percent of quartz sand with 70-140 meshes and 14.6 percent of 120-220-mesh sand powder;
the component B comprises the following raw materials in percentage by mass, based on 100 percent of the component B in percentage by mass:
45% of fluorine-containing emulsion, 8% of auxiliary agent and 47% of water; wherein the auxiliary agent comprises 4% of film-forming auxiliary agent, 3% of dispersing agent and 1% of wetting agent.
The preparation method of the modified aerogel cellulose in this embodiment includes the following steps:
providing a modified emulsion formed by polydopamine and octadecylamine and cellulose nano-fibers; the mass ratio of polydopamine to octadecylamine in the modified emulsion is 1.5: 1;
mixing cellulose nano-fiber and modified emulsion according to the mass ratio of 1: 2.5, adjusting the pH value to 8.5, and then freeze-drying at the temperature of-20 ℃ for 24 hours to obtain the modified aerogel cellulose.
Example 2
The embodiment provides waterproof leveling mortar, which comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 1: 2;
wherein the component A comprises the following raw materials in percentage by mass, based on 100 percent of the component A:
35 percent of 42.5 ordinary Portland cement, 0.4 percent of modified aerogel cellulose, 44.6 percent of quartz sand with 70-140 meshes and 20 percent of 120-220-mesh sand powder;
the component B comprises the following raw materials in percentage by mass, based on 100 percent of the component B in percentage by mass:
60% of fluorine-containing emulsion, 8% of auxiliary agent and 32% of water; wherein the auxiliary agent comprises 4% of film-forming auxiliary agent, 3% of dispersing agent and 1% of wetting agent.
The modified aerogel cellulose was prepared as in example 1.
Example 3
The embodiment provides waterproof leveling mortar, which comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 1: 3;
wherein the component A comprises the following raw materials in percentage by mass, based on 100 percent of the component A:
40 percent of 42.5 ordinary Portland cement, 0.4 percent of modified aerogel cellulose, 45 percent of quartz sand with 70-140 meshes and 14.6 percent of 120-220-mesh sand powder;
the component B comprises the following raw materials in percentage by mass, based on 100 percent of the component B in percentage by mass:
30% of fluorine-containing emulsion, 10% of auxiliary agent and 60% of water; wherein the auxiliary agent comprises 5% of film-forming auxiliary agent, 3% of dispersing agent and 2% of wetting agent.
The modified aerogel cellulose was prepared as in example 1.
Example 4
The embodiment provides waterproof leveling mortar, except that the mass fraction of the modified aerogel cellulose in the component A is replaced by 0.2% from 0.4%, the mass fraction of the 120-mesh 220-mesh sand powder is replaced by 14.8% from 14.6%, and the rest raw materials and the using amount are the same as those in the embodiment 1.
Example 5
The embodiment provides waterproof leveling mortar, except that the mass fraction of the modified aerogel cellulose in the component A is replaced by 0.5% from 0.4%, the mass fraction of the 120-mesh 220-mesh sand powder is replaced by 14.5% from 14.6%, and the other raw materials and the using amount are the same as those in the embodiment 1.
Example 6
The embodiment provides waterproof leveling mortar, except that the mass fraction of the fluorine-containing emulsion in the component B is replaced by 60% from 45%, the mass fraction of water is replaced by 32% from 47%, and the rest raw materials and the using amount are the same as those in the embodiment 1.
Example 7
The embodiment provides waterproof leveling mortar, except that the mass fraction of the fluorine-containing emulsion in the component B is replaced by 35% from 45%, the mass fraction of water is replaced by 57% from 47%, and the rest raw materials and the using amounts are the same as those in the embodiment 1.
Example 8
The embodiment provides waterproof leveling mortar, and except that the preparation method of the modified aerogel cellulose in the component A is different from that in the embodiment 1, and the other raw materials and the using amount are the same as those in the embodiment 1.
In the preparation method of the modified aerogel cellulose in this embodiment, except that the mass ratio of the cellulose nanofibers to the modified emulsion is 2: 1, the rest of the procedure was the same as in example 1.
Example 9
The embodiment provides waterproof leveling mortar, and except that the preparation method of the modified aerogel cellulose in the component A is different from that in the embodiment 1, and the other raw materials and the using amount are the same as those in the embodiment 1.
In the preparation method of the modified aerogel cellulose in this embodiment, except that the mass ratio of polydopamine to octadecylamine in the modified emulsion is 1: 1, the rest of the procedure was the same as in example 1.
Example 10
The embodiment provides waterproof leveling mortar, and except that the preparation method of the modified aerogel cellulose in the component A is different from that in the embodiment 1, and the other raw materials and the using amount are the same as those in the embodiment 1.
The preparation method of modified aerogel cellulose in this example was the same as that of example 1, except that the temperature of freeze-drying was-10 ℃ and the time of freeze-drying was 24 hours.
Comparative example 1
The comparative example provides a leveling mortar, except that the modified aerogel cellulose in the component A is replaced by the same amount of HBR250 cellulose, and the other raw materials and the amount are the same as those in the example 1.
Comparative example 2
This comparative example provides a leveling mortar, the raw materials and amounts being the same as in example 1, except that the fluorochemical emulsion in component B was replaced with an equal amount of acrylic emulsion Badfei RS 926W.
Comparative example 3
The comparative example provides leveling mortar, except that the sand powder in the component B is removed, the mass fraction of 70-140 meshes of quartz sand is replaced by 59.6 percent from 45 percent, and the rest raw materials and the use amount are the same as those in the example 1.
Comparative example 4
The comparative example provides leveling mortar, except that the modified aerogel cellulose in the component A is replaced by the modified cellulose, and the other raw materials and the using amount are the same as those in the example 1.
The preparation method of the modified cellulose of this comparative example includes the steps of:
providing a modified emulsion formed by polydopamine and octadecylamine and cellulose nano-fibers; the mass ratio of polydopamine to octadecylamine in the modified emulsion is 1.5: 1;
mixing cellulose nano-fiber and modified emulsion according to the mass ratio of 1: 2.5, and adjusting the pH value to 8.5, and then heating and drying at the temperature of 80 ℃ for 24 hours to obtain the modified cellulose.
Comparative example 5
The comparative example provides leveling mortar, except that the modified aerogel cellulose in the component A is replaced by the same amount of cellulose nanofiber, namely the cellulose nanofiber is not modified, and the other raw materials and the using amount are the same as those in the example 1.
Comparative example 6
The comparative example provides leveling mortar, except that the mass fraction of the modified aerogel cellulose in the component A is replaced by 0.1 percent from 0.4 percent, the mass fraction of the 120-mesh 220-mesh sand powder is replaced by 14.9 percent from 14.6 percent, and the rest raw materials and the using amount are the same as those in the example 1.
Comparative example 7
The comparative example provides leveling mortar, except that the mass fraction of the modified aerogel cellulose in the component A is replaced by 0.7 percent from 0.4 percent, the mass fraction of the 120-mesh 220-mesh sand powder is replaced by 14.3 percent from 14.6 percent, and the rest raw materials and the using amount are the same as those in the example 1.
Comparative example 8
The comparative example provides leveling mortar, except that the mass fraction of the fluorine-containing emulsion in the component B is replaced by 25 percent from 45 percent, the mass fraction of the water is replaced by 67 percent from 47 percent, and the rest of the raw materials and the used amount are the same as those in the example 1.
Comparative example 9
The comparative example provides leveling mortar, except that the mass fraction of the fluorine-containing emulsion in the component B is replaced by 65 percent from 45 percent, the mass fraction of the water is replaced by 27 percent from 47 percent, and the rest of the raw materials and the used amount are the same as those in the example 1.
Comparative example 10
The comparative example provides leveling mortar, which comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 1: 2.5;
wherein the component A comprises the following raw materials in percentage by mass, based on 100 percent of the component A:
30 percent of 42.5 ordinary Portland cement, 0.8 percent of modified aerogel cellulose, 45 percent of quartz sand with 70-140 meshes and 24.2 percent of 120-220-mesh sand powder;
the component B comprises the following raw materials in percentage by mass, based on 100 percent of the component B in percentage by mass:
65% of fluorine-containing emulsion, 12% of auxiliary agent and 23% of water; wherein the auxiliary agent comprises 5% of film-forming auxiliary agent, 4% of dispersing agent and 3% of wetting agent.
In order to illustrate the technical effects of the above examples and comparative examples, the following experimental examples were specifically set.
Examples of the experiments
The performances of the mortars provided in the examples and the comparative examples were measured, and the specific results are shown in tables 2 and 3.
In Table 2, the flexibility (transverse deformation capability), "water absorption", "flexural strength" and "compressive strength" are referred to JC/T984-; the seepage pressure resistance is determined by a test method and standard requirements of a seepage pressure resistance-mortar test piece (28d) in JC/T984-2011 Polymer Cement waterproof mortar type II.
In table 3, the "flexibility" detection method refers to the "flexibility of putty film" test method in JG/T157-. The 'bonding strength with mortar' detection method refers to the 'tensile bonding strength (with cement mortar)' original strength test method in GB/T29906-2013 in 5.2 table 3, but the maintenance environment is performed by setting a 'standard environment' and a 'low-temperature environment'.
The standard requirements for waterproof leveling mortar are: the water absorption is less than or equal to 4.0 percent; the flexibility (transverse deformability) is more than or equal to 1.0 mm; the anti-seepage pressure is more than or equal to 1.5 MPa; the compressive strength is more than or equal to 24 MPa; the breaking strength is more than or equal to 8 MPa; the bonding strength is more than or equal to 0.6 MPa; the flexibility of 100mm is qualified without cracks, and the smaller the value is, the better the value is.
TABLE 2
Figure BDA0003399404590000141
TABLE 3
Figure BDA0003399404590000142
Figure BDA0003399404590000151
The data in table 2 and the standard requirements show that the performance of the waterproof leveling mortar provided by the embodiments of the invention meets the standard requirements, and the overall performance of the mortar is superior to that of the mortar provided by the comparative example.
Specifically, comparative examples 1, 4 and 5 are comparative experiments of example 1, and unlike example 1 which uses modified aerogel cellulose, comparative example 1 uses ordinary HBR250 cellulose, comparative example 4 uses modified cellulose prepared by a conventional method, and comparative example 5 uses cellulose nanofibers which are not modified. As is apparent from the data in the table, the waterproof and anti-permeability properties, and the compressive and flexural strength of comparative examples 1, 4 and 5 are inferior to those of example 1, and particularly, the adhesive strength and flexibility at low temperature are significantly reduced. It can be seen that the modified aerogel cellulose in the present invention has a significant effect on the performance of the waterproof leveling mortar, and cannot be replaced by conventional cellulose or modified cellulose.
Comparative examples 7 to 9 are comparative experiments to example 1, and unlike example 1, the amounts of some of the raw materials used in comparative examples 7 to 9 are not within the numerical ranges defined in the present invention. The raw material amount of the leveling mortar provided in comparative example 10 is not within the numerical range defined in the present invention. As can be seen from the data in the table, the performance of the mortars provided by comparative examples 7-10 all showed a different degree of degradation. This shows that only when the amount of each raw material is within the range of the value defined in the present invention, the waterproof leveling mortar can be ensured to have good waterproof and anti-permeability performance, higher compressive strength and flexural strength, and good strength at low temperature and not easy to crack.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The waterproof leveling mortar is characterized by comprising a component A and a component B, wherein the mass ratio of the component A to the component B is 1: (2-3);
wherein the component A comprises the following raw materials in percentage by mass, based on 100 percent of the component A:
35-50% of cement, 0.2-0.5% of modified aerogel cellulose, 40-60% of coarse sand and 4.8-20% of sand powder;
the component B comprises the following raw materials in percentage by mass, based on 100 percent of the component B in percentage by mass:
30-60% of fluorine-containing emulsion, 5-10% of auxiliary agent and 30-60% of water.
2. The waterproof leveling mortar of claim 1, wherein the preparation method of the modified aerogel cellulose comprises the following steps:
providing a modified emulsion formed by polydopamine and octadecylamine and cellulose nano-fibers;
mixing the cellulose nano-fiber with the modified emulsion, adjusting the pH value to 8.0-8.5, and then freeze-drying to obtain the modified aerogel cellulose.
3. The waterproof leveling mortar according to claim 2, wherein the mass ratio of polydopamine to octadecylamine in the modified emulsion is (1-2): 1;
preferably, in the step (a), the cellulose nanofibers have a particle size of 20 to 100 nm.
4. The waterproof leveling mortar of claim 2, wherein the mass ratio of the cellulose nanofibers to the modified emulsion is 1: (2-5).
5. The waterproof leveling mortar according to claim 2, wherein the temperature of freeze drying is-30 to-10 ℃, and the time of freeze drying is 18 to 36 hours.
6. The waterproof leveling mortar according to any one of claims 1 to 5, wherein the grit of the grit is 70 to 140 mesh;
preferably, the coarse sand is quartz sand;
preferably, the granularity of the sand powder is 120-220 meshes.
7. The waterproof leveling mortar according to any one of claims 1 to 5, wherein the Tg of the fluorine-containing emulsion is between-20 and-10 ℃.
8. The waterproof leveling mortar of claim 7, wherein the fluorine-containing emulsion comprises fluorine-containing emulsion DF-20 and/or fluorine-containing emulsion DF-M05A.
9. The method for preparing the waterproof leveling mortar according to any one of claims 1 to 8, comprising the following steps:
and (3) mixing the raw materials of the component A and the raw materials of the component B to obtain the waterproof leveling mortar.
10. Use of the waterproof leveling mortar of any one of claims 1 to 8 in the field of building construction.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008247666A (en) * 2007-03-30 2008-10-16 Ube Ind Ltd Self-leveling hydraulic composition
CN104261759A (en) * 2014-09-18 2015-01-07 常熟市康信节能材料工程有限公司 Heat-preservation mortar
CN107032679A (en) * 2017-05-19 2017-08-11 上海市建筑科学研究院(集团)有限公司 A kind of inorganic heat insulation mortar based on hydrophobicity aeroge and preparation method thereof
FR3050203A1 (en) * 2016-04-13 2017-10-20 Saint-Gobain Weber STRONG ALLOY MORTAR COMPOSITION AND THERMAL INSULATION
CN108546046A (en) * 2018-05-22 2018-09-18 成都新柯力化工科技有限公司 A kind of external wall hydrophobic flexible heat-insulating mortar and preparation method
CN109574591A (en) * 2018-12-21 2019-04-05 科顺防水科技股份有限公司 A kind of leveling mortar with water-proof function
CN109749120A (en) * 2019-03-06 2019-05-14 中国科学院过程工程研究所 A kind of method that stalk directly prepares fiber-rich element aeroge

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008247666A (en) * 2007-03-30 2008-10-16 Ube Ind Ltd Self-leveling hydraulic composition
CN104261759A (en) * 2014-09-18 2015-01-07 常熟市康信节能材料工程有限公司 Heat-preservation mortar
FR3050203A1 (en) * 2016-04-13 2017-10-20 Saint-Gobain Weber STRONG ALLOY MORTAR COMPOSITION AND THERMAL INSULATION
CN107032679A (en) * 2017-05-19 2017-08-11 上海市建筑科学研究院(集团)有限公司 A kind of inorganic heat insulation mortar based on hydrophobicity aeroge and preparation method thereof
CN108546046A (en) * 2018-05-22 2018-09-18 成都新柯力化工科技有限公司 A kind of external wall hydrophobic flexible heat-insulating mortar and preparation method
CN109574591A (en) * 2018-12-21 2019-04-05 科顺防水科技股份有限公司 A kind of leveling mortar with water-proof function
CN109749120A (en) * 2019-03-06 2019-05-14 中国科学院过程工程研究所 A kind of method that stalk directly prepares fiber-rich element aeroge

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