CN114634341A - Paste-like micro cement and preparation method thereof - Google Patents

Paste-like micro cement and preparation method thereof Download PDF

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Publication number
CN114634341A
CN114634341A CN202210334496.0A CN202210334496A CN114634341A CN 114634341 A CN114634341 A CN 114634341A CN 202210334496 A CN202210334496 A CN 202210334496A CN 114634341 A CN114634341 A CN 114634341A
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cement
paste
micro
parts
defoaming agent
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Inventor
田玉军
王朋飞
薛美海
杨光
许盼
张田赛
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Hebei Jianggong New Building Materials Co ltd
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Hebei Jianggong New Building Materials Co ltd
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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
    • 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
    • C04B14/26—Carbonates
    • C04B14/28—Carbonates of calcium
    • 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
    • C04B24/32—Polyethers, e.g. alkylphenol polyglycolether
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/42—Block-or graft-polymers containing polysiloxane sequences
    • C08G77/46—Block-or graft-polymers containing polysiloxane sequences containing polyether sequences
    • 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

Abstract

The application relates to the field of building materials, and particularly discloses paste micro cement and a preparation method thereof, wherein the paste micro cement comprises the following raw materials in parts by weight: 450 parts of waterproof emulsion 350-; the paste micro-cement surface prepared by the application has no air hole bubbles, and has better compressive strength and rupture strength.

Description

Paste-like micro cement and preparation method thereof
Technical Field
The application relates to the field of building materials, in particular to paste-shaped micro cement and a preparation method thereof.
Background
The main components of traditional cement are limestone and clay, which are powdery hydraulic inorganic cementing materials, and the cement is added with water and stirred into slurry, can firmly cement sand, stone and other materials together, and is an indispensable important material in the building industry. The main difference between micro-cements and traditional cements is the addition of resin materials. The environmental protection level of the common cement is not enough, if the formula proportion is not proper, the shrinkage of the common cement is not good, cracks are easy to crack and the wear resistance is poor; in contrast, the micro-cement can make an attractive seamless, fluid, continuous surface, and it is wear resistant and durable, and can be made to crack free for many years.
As the micro-cement can react with the raw materials in the preparation process, bubbles appear, and the mechanical property of the micro-cement is affected. Usually, a defoaming agent is added in the preparation process of the micro cement, the existing defoaming agent is mainly classified into polyether and organic silicon, but the polyether defoaming agent is limited by temperature, and simultaneously has the defects of low defoaming capability and low foam breaking rate; although the organosilicon antifoaming agent is chemically stable, the efficiency of inhibiting foam is poor, and if the addition amount is too large, the internal shrinkage cavity defect is caused, the strength of cement is affected, and the cost is increased.
In view of the above-mentioned related technologies, the inventors believe that in the production process of the micro cement, the generated bubbles should be effectively eliminated, the defects of pores, honeycombs, pitted surfaces and the like on the surface of the micro cement are reduced, and the compactness of the micro cement is improved, thereby improving the strength of the micro cement.
Disclosure of Invention
In order to improve the mechanical strength of the paste micro cement, the application provides the paste micro cement and a preparation method thereof.
In a first aspect, the present application provides a paste micro cement, which adopts the following technical scheme:
the paste micro cement comprises the following raw materials in parts by weight: 450 parts of waterproof emulsion 350-.
By adopting the technical scheme, the polyether modified organic silicon defoamer in the application is a silicon ether copolymer obtained by modifying and grafting a polyether chain segment or a polysiloxane chain segment, and because the hydrophobic and hydrophilic properties of the siloxane chain segment and the polyether chain segment to a solvent are different, when the polyether modified organic silicon defoamer is added into paste micro cement, the polyether chain segment extends to the outside, and the polysiloxane chain segment is curled to the inside, so that a dispersed state is formed, namely self-emulsifying property. The defoaming agent can be rapidly and uniformly dispersed in foaming liquid under the action of self-emulsifying property, has more outstanding stability, can comprehensively inhibit and defoam foam, and has the advantages of good dispersibility, strong foam inhibition capability, stability, no toxicity, low volatility, strong defoaming effect and the like. The light calcium carbonate and the hydroxypropyl methyl cellulose are used in a matching manner, so that the defoaming and foam inhibiting performance of the polyether modified organic silicon type defoaming agent can be further improved, the stability of the polyether modified organic silicon type defoaming agent is improved, and the durability of the defoaming agent in use is ensured. According to the paste micro cement prepared by the application, the polyether modified organic silicon type defoaming agent, the light calcium carbonate and the hydroxypropyl methyl cellulose are added, so that the mechanical strength of the paste micro cement is improved.
Preferably, the paste micro-cement comprises the following raw materials in parts by weight: 420 parts of water-proof emulsion 380-.
By adopting the technical scheme, the application optimizes the use amount of each raw material of the paste micro cement, so that when the use amount of the paste micro cement raw material is in the range, the prepared paste micro cement has better compressive strength and rupture strength, and the appearance of a sample has no air holes and bubbles.
Preferably, the polyether modified organic silicon type defoaming agent comprises the following raw materials in parts by weight: 12-20 parts of methyl ethoxy silicone oil, 15-25 parts of polyether, 0.1-0.2 part of catalyst, 0.2-0.4 part of emulsifier and 18-30 parts of deionized water.
By adopting the technical scheme, the polyether modified organic silicon type defoaming agent obtained by modifying organic silicon through polyether has the performance of both organic silicon and polyether, so that the polyether modified organic silicon type defoaming agent has lower surface tension, can be dispersed and spread on the surface of cement more quickly, and improves the quick defoaming capability of the cement.
Preferably, the preparation method of the polyether modified organic silicon type defoaming agent comprises the following steps: 1) uniformly mixing methyl ethoxy silicone oil and polyether, and stirring and reacting for 2.5-4h at the temperature of 115-130 ℃ to obtain a first mixture; 2) adding an emulsifier into the first mixture, stirring for 40-60min at the temperature of 75-90 ℃, and then adding deionized water to obtain the defoaming agent.
By adopting the technical scheme, the methyl ethoxy silicone oil and the polyether are blended in a certain sequence in the preparation method to obtain the polyether modified organic silicon type defoaming agent, and the emulsifier is added in the preparation process, so that the emulsifying capacity of the defoaming agent is enhanced, the polyether modified organic silicon can be fully dispersed, a double electronic layer with mutual repulsion is formed, the stability of the defoaming agent is improved, and the foam inhibition performance of the polyether modified organic silicon type defoaming agent is more durable.
Preferably, the light calcium carbonate has an average particle size of 2 to 8 μm.
By adopting the technical scheme, the average particle size of the light calcium carbonate is limited, so that the prepared paste micro-cement has better compressive strength and flexural strength.
Preferably, the hydroxypropyl methylcellulose has an average particle size of 40 to 80 mesh.
By adopting the technical scheme, the application limits the average particle size range of the hydroxypropyl methyl cellulose, so that the prepared paste micro-cement has good mechanical strength, the breaking strength can reach 54.9MPa, the breaking strength can reach 9.2MPa, and the appearance of a sample has no air holes and air bubbles.
In a second aspect, the application provides a preparation method of paste micro cement, which adopts the following technical scheme: which comprises the following steps:
s1: uniformly mixing the styrene-acrylic emulsion and the waterproof emulsion, and stirring for 10-20min to obtain a mixed emulsion;
s2: adding a dispersing agent, a polyether modified organic silicon type defoaming agent and titanium dioxide into the mixed emulsion, uniformly mixing, and stirring for 5-10min to obtain a first mixed solution;
s3: adding light calcium carbonate, hydroxypropyl methylcellulose, sodium citrate and ordinary portland cement into the first mixed solution, uniformly mixing, and stirring for 10-20min to obtain paste micro-cement.
By adopting the technical scheme, the raw materials of the paste micro cement are uniformly mixed in a certain sequence, so that the polyether modified organic silicon type defoaming agent, the light calcium carbonate and the hydroxypropyl methyl cellulose are uniformly dispersed in the raw materials, and the prepared paste micro cement has better compressive strength and flexural strength.
In summary, the present application has the following beneficial effects:
1. the polyether modified organic silicon type defoaming agent is a silicon ether copolymer obtained by modifying and grafting a polyether chain segment or a polysiloxane chain segment, and due to the fact that the hydrophobicity and the hydrophilicity of the siloxane chain segment and the polyether chain segment to a solvent are different, when the polyether modified organic silicon type defoaming agent is added into paste micro cement, the polyether chain segment extends outside, and the polysiloxane chain segment is curled inside, so that a dispersed state is formed, namely self-emulsifying property. The defoaming agent can be rapidly and uniformly dispersed in foaming liquid under the action of self-emulsifying property, has more outstanding stability, can comprehensively inhibit and defoam foam, and has the advantages of good dispersibility, strong foam inhibition capability, stability, no toxicity, low volatility, strong defoaming effect and the like. The light calcium carbonate and the hydroxypropyl methyl cellulose are used in a matching manner, so that the defoaming and foam inhibiting performance of the polyether modified organic silicon type defoaming agent can be further improved, the stability of the polyether modified organic silicon type defoaming agent is improved, and the durability of the defoaming agent in use is ensured. According to the paste micro cement prepared by the application, the polyether modified organic silicon type defoaming agent, the light calcium carbonate and the hydroxypropyl methyl cellulose are added, so that the mechanical strength of the paste micro cement is improved.
2. According to the preparation method, methyl ethoxy silicone oil and polyether are blended in a certain sequence to obtain the polyether modified organic silicon type defoaming agent, and meanwhile, the emulsifier is added in the preparation process, so that the emulsifying capacity of the defoaming agent is enhanced, the polyether modified organic silicon can be fully dispersed, a double electronic layer with mutual repulsion is formed, the stability of the emulsion is increased, and the foam inhibition performance of the defoaming agent is more durable.
3. The paste micro cement prepared by the application is subjected to compression strength and rupture strength tests, the measured compression strength can reach 54.9MPa to the maximum, the rupture strength reaches 9.2MPa, and the appearance of a sample has no air holes and bubbles.
Detailed Description
The present application will be described in further detail with reference to examples.
Raw materials
Methyl ethoxy silicone oil: the viscosity is 3-50; polyether: the model number is 330N; the rest raw materials are common commercial materials.
Preparation example
Preparation examples 1 to 3
The polyether modified silicone type defoaming agent of preparation examples 1 to 3, the raw materials and the amounts of the raw materials are shown in table 1, and the preparation steps are as follows:
1) uniformly mixing methyl ethoxy silicone oil and polyether, and stirring to react for 3 hours at the temperature of 120 ℃ to obtain a first mixture;
2) and adding an emulsifier into the first mixture, stirring for 60min at the temperature of 80 ℃, and then adding deionized water to obtain the polyether modified organic silicon type defoaming agent.
Wherein the catalyst is chloroplatinic acid, and the emulsifier is glyceryl monostearate.
TABLE 1 preparation examples 1-3 polyether modified silicone type defoaming agent raw materials and amounts (kg) of raw materials
Preparation example 1 Preparation example 2 Preparation example 3
Methyl ethoxy silicone oil 12 16 20
Polyether 25 20 15
Catalyst and process for preparing same 0.1 0.15 0.2
Emulsifying agent 0.4 0.3 0.2
Deionized water 18 26 30
Examples
Examples 1 to 4
The paste micro-cement of examples 1-4, whose raw materials and amounts are shown in table 2, was prepared by the following steps:
s1: uniformly mixing the styrene-acrylic emulsion and the waterproof emulsion, and stirring for 15min to obtain a mixed emulsion;
s2: adding a dispersing agent, a polyether modified organic silicon type defoaming agent and titanium dioxide into the mixed emulsion, uniformly mixing, and stirring for 10min to obtain a first mixed solution;
s3: adding light calcium carbonate, hydroxypropyl methylcellulose, sodium citrate and ordinary portland cement into the first mixed solution, uniformly mixing, and stirring for 15min to obtain paste micro-cement.
Wherein the polyether modified silicone type defoaming agent is obtained from preparation example 1, the average particle size of light calcium carbonate is 2 μm, the average particle size of hydroxypropyl methylcellulose is 40 meshes, and the dispersing agent is a high molecular weight ammonium salt carboxylic acid copolymer dispersing agent.
TABLE 2 materials and amounts (kg) of materials of examples 1-4
Figure BDA0003574037590000041
Figure BDA0003574037590000051
Example 5
A paste-like micro cement, which is different from example 3 in that a polyether modified silicone type defoaming agent was obtained from preparation example 2, and the rest of the procedure was the same as in example 3.
Example 6
A paste-like micro cement, which is different from example 3 in that a polyether modified silicone type defoaming agent was obtained from preparation example 3, and the rest of the procedure was the same as in example 3.
Example 7
A paste-like micro cement, which is different from example 5 in that the amount of the polyether modified silicone type defoaming agent added was 0.6kg, and the rest of the procedure was the same as in example 5.
Example 8
A paste-like micro cement, which is different from example 5 in that the amount of the polyether modified silicone type defoaming agent added was 1kg, and the other steps were the same as in example 5.
Example 9
A paste-like micro cement which is different from example 5 in that the amount of the polyether modified silicone type defoaming agent added was 1.2kg, and the other steps were the same as example 5.
Example 10
A paste-like micro cement, which is different from example 8 in that the mean particle size of precipitated calcium carbonate is 6 μm, was prepared by the same procedure as in example 8.
Example 11
A paste-like micro cement, which is different from example 8 in that the mean particle size of light calcium carbonate is 8 μm, was prepared in the same manner as in example 8.
Example 12
A paste-like micro cement, which is different from example 8 in that the average particle size of hydroxypropylmethylcellulose is 60 mesh, was prepared in the same manner as in example 8.
Example 13
A paste-like micro cement, which is different from example 8 in that the average particle size of hydroxypropylmethylcellulose is 80 mesh, was prepared in the same manner as in example 8.
Comparative example
Comparative example 1
A paste-like micro cement which is different from that of example 3 in that the amount of the antifoaming agent added is 0 and the other steps are the same as those of example 3.
Comparative example 2
A paste-like micro cement, which is different from example 3 in that the amount of light calcium carbonate added is 0, and the rest of the procedure is the same as example 3.
Comparative example 3
A paste-like micro cement, which is different from example 3 in that the amount of hydroxypropylmethylcellulose added is 0, and the rest of the procedure is the same as in example 3.
Performance test
Detection method/test method
Paste-like micro cements were prepared according to the preparation methods of examples 1 to 13 and comparative examples 1 to 3, and then tested according to the following test methods, and the test results are shown in table 3.
Compressive strength: standard test blocks are manufactured according to GB/T17671-1999 Cement mortar Strength test method (ISO), and the compression strength of the standard test blocks is measured.
Breaking strength: standard test blocks are manufactured according to GB/T17671-1999 Cement mortar Strength test method (ISO), and the flexural strength of the standard test blocks is measured.
Appearance: and observing whether obvious air holes and air bubbles exist on the surface of the test block.
TABLE 3 test results of examples 1 to 13 and comparative examples 1 to 3
Figure BDA0003574037590000061
Figure BDA0003574037590000071
As can be seen from the data in Table 3, the pasty micro cement prepared by the method improves the mechanical strength of the pasty micro cement by adding a waterproof emulsion, a styrene-acrylic emulsion, light calcium carbonate, hydroxypropyl methyl cellulose, sodium citrate and a polyether modified organic silicon type defoaming agent in the preparation process of the pasty micro cement.
According to the detection data of the embodiment 1-4, the raw material composition of the paste micro cement in the embodiment 3 is better, and the prepared paste micro cement has higher compressive strength and flexural strength. The detection data of the embodiment 5-6 are combined, so that the polyether modified organic silicon type defoaming agent of the preparation example 2 is better in preparation, and the paste micro cement obtained by adding the polyether modified organic silicon type defoaming agent prepared by the preparation example 2 into the preparation process of the paste micro cement has better compressive strength and flexural strength.
The combination of the detection data of the embodiment 5 and the detection data of the embodiments 7 to 9 shows that when the addition amount of the polyether modified organic silicon type defoaming agent is 1kg, the mechanical strength of the paste micro cement is better, wherein the compressive strength can reach 54.2MPa, the flexural strength can reach 8.8MPa, and the appearance of the sample has no air holes and bubbles.
Combining the detection data of example 8 and examples 10-11, it can be seen that the smaller the average particle size of the light calcium carbonate, the better the compressive strength and the flexural strength of the prepared paste-like micro-cement; when the average grain diameter of the light calcium carbonate is 4 mu m, the prepared paste micro-cement has better mechanical property.
Combining the detection data of example 8 and examples 12-13, it can be seen that the larger the average particle size of hydroxypropyl methylcellulose is, the better the compression strength and the flexural strength of the prepared paste-like micro cement are; when the average grain diameter of the hydroxypropyl methyl cellulose is 80 meshes, the mechanical strength of the paste micro cement is better, wherein the compressive strength can reach 54.9MPa, the flexural strength can reach 9.2MPa, and the appearance of the sample has no air holes and bubbles.
By combining the detection data of the example 1 and the comparative example 1, it can be seen that when the addition amount of the polyether modified organic silicon type defoaming agent is 0, the compressive strength and the flexural strength of the prepared paste micro cement are small, and the appearance of the sample has air holes and bubbles, which indicates that the defoaming agent is beneficial to improving the mechanical property of the paste micro cement.
Combining the test data of example 1 and comparative examples 2-3, it can be seen that when the addition amount of light calcium carbonate and hydroxypropyl methylcellulose is 0, the mechanical properties of the obtained paste micro-cement are not as good as those of the paste micro-cement when the light calcium carbonate and the hydroxypropyl methylcellulose are added simultaneously, which indicates that the light calcium carbonate and the hydroxypropyl methylcellulose have synergistic effect on improving the mechanical properties of the paste micro-cement.
The specific embodiments are only for explaining the present application and are not limiting to the present application, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the claims of the present application.

Claims (8)

1. The paste micro cement is characterized by comprising the following raw materials in parts by weight: 450 parts of waterproof emulsion 350-.
2. The paste micro-cement of claim 1, wherein: the paste micro cement comprises the following raw materials in parts by weight: 420 parts of waterproof emulsion 380-.
3. The paste micro-cement of claim 1, wherein: the defoaming agent comprises the following raw materials in parts by weight: 12-20 parts of methyl ethoxy silicone oil, 15-25 parts of polyether, 0.1-0.2 part of catalyst, 0.2-0.4 part of emulsifier and 18-30 parts of deionized water.
4. A paste micro cement according to claim 3, characterized in that: the preparation method of the polyether modified organic silicon type defoaming agent comprises the following steps: 1) uniformly mixing methyl ethoxy silicone oil and polyether, and stirring and reacting for 2.5-4h at the temperature of 115-130 ℃ to obtain a first mixture; 2) adding an emulsifier into the first mixture, stirring for 40-60min at the temperature of 75-90 ℃, and then adding deionized water to obtain the defoaming agent.
5. The paste micro-cement of claim 1, wherein: the average particle size of the light calcium carbonate is 2-8 mu m.
6. The paste micro cement of claim 1, wherein: the average particle size of the hydroxypropyl methyl cellulose is 40-80 meshes.
7. The paste micro-cement of claim 1, wherein: the dispersant is a high molecular weight ammonium salt carboxylic acid copolymer dispersant.
8. A method of preparing a paste micro cement as claimed in any one of claims 1 to 7, characterised in that: which comprises the following steps:
s1: uniformly mixing the styrene-acrylic emulsion and the waterproof emulsion, and stirring for 10-20min to obtain a mixed emulsion;
s2: adding a dispersing agent, a polyether modified organic silicon type defoaming agent and titanium dioxide into the mixed emulsion, uniformly mixing, and stirring for 5-10min to obtain a first mixed solution;
s3: adding light calcium carbonate, hydroxypropyl methylcellulose, sodium citrate and ordinary portland cement into the first mixed solution, uniformly mixing, and stirring for 10-20min to obtain paste micro-cement.
CN202210334496.0A 2022-03-30 2022-03-30 Paste-like micro cement and preparation method thereof Pending CN114634341A (en)

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CN115215596A (en) * 2022-08-12 2022-10-21 浙江壁灵宝建材科技有限公司 Single-component waterproof micro cement and preparation process thereof
CN115584170A (en) * 2022-10-10 2023-01-10 河南兴安新型建筑材料有限公司 Wall micro-cement with natural pore artistic effect and preparation method thereof

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CN112057904A (en) * 2020-08-25 2020-12-11 北京金隅水泥节能科技有限公司 Defoaming agent and production process and application thereof
CN113416048A (en) * 2021-07-12 2021-09-21 广东浮斐尼创意科技有限公司 Bi-component micro cement coating and preparation process thereof
CN114213886A (en) * 2021-12-29 2022-03-22 上海磐彩环保科技股份有限公司 Double-component micro-cement environment-friendly coating and preparation method thereof

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US20130146286A1 (en) * 2010-08-17 2013-06-13 Schlumberger Technology Corporation Self-Repairing Cements
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CN113416048A (en) * 2021-07-12 2021-09-21 广东浮斐尼创意科技有限公司 Bi-component micro cement coating and preparation process thereof
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Cited By (3)

* Cited by examiner, † Cited by third party
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CN115215596A (en) * 2022-08-12 2022-10-21 浙江壁灵宝建材科技有限公司 Single-component waterproof micro cement and preparation process thereof
CN115584170A (en) * 2022-10-10 2023-01-10 河南兴安新型建筑材料有限公司 Wall micro-cement with natural pore artistic effect and preparation method thereof
CN115584170B (en) * 2022-10-10 2024-04-16 河南兴安新型建筑材料有限公司 Wall micro-cement with natural pore artistic effect and preparation method thereof

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Application publication date: 20220617