CN112608091A - Polymer cement-based waterproof coating and construction method thereof - Google Patents
Polymer cement-based waterproof coating and construction method thereof Download PDFInfo
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- CN112608091A CN112608091A CN202110159695.8A CN202110159695A CN112608091A CN 112608091 A CN112608091 A CN 112608091A CN 202110159695 A CN202110159695 A CN 202110159695A CN 112608091 A CN112608091 A CN 112608091A
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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
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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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation 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
- 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
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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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- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The application relates to the technical field of waterproof coatings, and particularly discloses a polymer cement-based waterproof coating and a construction method thereof. The polymer cement-based waterproof coating comprises 61-70 parts of acrylate emulsion, 6-9 parts of dispersing agent, 6-9 parts of film-forming additive, 2-6 parts of preservative, 2-6 parts of water, 1-5 parts of defoaming agent, 46-50 parts of cement, 16-20 parts of quartz powder, 5-9 parts of carborundum and 3-7 parts of accelerating agent. The polymer cement-based waterproof coating can be used on surfaces needing water proofing such as roofs and basements, and has the advantages of good waterproof effect and short film forming time.
Description
Technical Field
The application relates to the technical field of waterproof coatings, in particular to a polymer cement-based waterproof coating and a construction method thereof.
Background
The polymer cement-based waterproof coating is also called JS composite waterproof coating. The polymer cement-based paint comprises both organic polymer emulsion and inorganic cement, and the polymer cement-based waterproof paint loses water based on the organic polymer emulsion to form an elastic film layer with cohesiveness and continuity; the cement absorbs the water in the emulsion to harden, the flexible polymer and the hardened cement body penetrate through each other to firmly adhere to form a firm and elastic waterproof layer, and the flexible polymer is filled in the gaps of the hardened cement body, so that the hardened cement body has certain rigidity, certain toughness and high adhesion, and the coating can be made very thin. The polymer cement-based waterproof coating has better elongation, and a cement hardened body is filled in a polymer phase, so that the polymer cement-based waterproof coating has better outdoor durability and better adaptability to a base layer; in addition, the waterproof coating is an environment-friendly coating, so that the waterproof coating is more and more favored by people and becomes a hotspot of the development of the waterproof coating in recent years.
The organic polymer coating has good flexibility, lower critical surface tension and good decorative effect; the cement is a hydraulic cementing material, and has strong binding force with a damp base surface, very good moisture resistance and high compressive strength. However, the inorganic cement has a long film-forming time for setting and curing, and is generally kept away from rainy days or rainy seasons during construction work, mainly because of fear that the just-applied coating is damaged by rainwater.
Therefore, the polymer cement-based waterproof coating has the defects of long setting time, easy damage in the film forming process, influence on the waterproof performance and inconvenience in construction.
Disclosure of Invention
In order to solve the problem that the film forming time of the polymer cement-based waterproof coating is long, the application provides the polymer cement-based waterproof coating and a construction method thereof.
In a first aspect, the present application provides a polymer cement-based waterproof coating, which adopts the following technical scheme:
the polymer cement-based waterproof coating is prepared from the following raw materials in parts by weight: high-molecular emulsion: the powder is (0.8-1.2): 1, the polymer emulsion comprises the following raw materials in parts by weight: 61-70 parts of acrylate emulsion, 6-9 parts of dispersant, 6-9 parts of film-forming assistant, 2-6 parts of preservative, 2-6 parts of water and 1-5 parts of defoaming agent; the powder comprises the following raw materials in parts by weight: 46-50 parts of cement, 16-20 parts of quartz powder, 5-9 parts of carborundum and 3-7 parts of an accelerator; the accelerating agent is one or more of aluminum oxide clinker, alcohol amine, polyaluminium sulfate, inorganic acid and organic acid.
By adopting the technical scheme, the powder contains the accelerator with certain components, when the powder is added into the polymer emulsion, the accelerator and the cement are dispersed in the emulsion, the accelerator can react with the cement, the reaction speed of cement hydration can be improved, the condensation speed of the waterproof coating mainly depends on the hydration speed of the cement, and therefore, the film forming time of the polymer cement-based waterproof coating can be shortened.
The quick-setting early-strength action mechanism of the aluminum oxide clinker is that the gypsum in the cement is changed into Na2SO4To lose the retardation effect and promote C3A hydrates rapidly and precipitates its hydration product crystals in solution, causing the cement slurry to set rapidly.
The alcohol amine can be mutually dissolved with water, the molecule of the alcohol amine contains N atoms, the N atoms have a pair of lone pair electrons, and the alcohol amine can form covalent bonds with certain metal ions with empty orbitals to form stable soluble complex ions through complexation. In a cement hydration system, alcohol amine can complex Al3+、Fe3+The plasma and the formed complex form a plurality of soluble areas in the solution, thereby improving the diffusion rate of hydration products and promoting the hydration of cement. Alcohol amine energy with Al in liquid accelerator system3+Soluble complex ions are formed by complexation, and Al in the solution is reduced3+Acts as a stabilizer.
More Al is ionized when polyaluminium sulfate is dissolved in water3+And less SO4 2-Under the same action and effect, the consumption of polyaluminium sulfate can be reduced, and the stability of the liquid accelerator can be improved.
Organic carboxylic acids, very soluble in water, containing COO in the molecule2-Wherein O as a coordinating atom can provide an electron pair with the central ion Al3+The complex ions have certain solubility and can stably exist in the solution, and free Al is effectively reduced3+The stability of the accelerator is improved.
Preferably, the weight part of the accelerator is 4-6 parts.
Preferably, the accelerating agent consists of aluminum oxide clinker, alcohol amine, polyaluminium sulfate and organic acid, and the weight ratio of the aluminum oxide clinker to the alcohol amine to the polyaluminium sulfate to the organic acid is (5-9): (2-6): (1-5):(0.5-3).
By adopting the technical scheme, the film forming time is tried to be shortened by mutually matching the effects of the aluminoxy clinker, the alcohol amine, the polyaluminium sulfate and the organic acid on different film forming processes of the polymer cement-based waterproof coating.
Preferably, the organic acid is acetic acid.
Preferably, the polymer emulsion further comprises an early strength agent, and the using amount of the early strength agent is 1-5 parts.
By adopting the technical scheme, through the hydration mechanism of cement, due to the limitation of the hydration speed, water is added from the beginning and the cement is stirred to have certain strength, so that a long time is needed, the hydration speed can be obviously improved by adding the early strength agent, the production strength of concrete is accelerated, the maintenance time is shortened, the construction speed is obviously accelerated by adding the early strength agent, the quality is effectively improved, and the cost is saved.
Preferably, the early strength agent is methacrylic acid or calcium formate.
By adopting the technical scheme, after methacrylic acid is added, the hydration of tricalcium silicate and dicalcium silicate is accelerated; the crystal blank can be generated in liquid materials, and plays a role of a crystal nucleus, so that the energy required by the generated product is reduced, and the effect of accelerating the hydration of cement is achieved; the crystal blank can promote the C-S-H glue to be separated out, reduce the concentration of the C-S-H glue in the liquid phase and further improve the C content3S and C2S hydration speed and early strength.
Preferably, the preservative is isobutyltriethoxysilane.
By adopting the technical scheme, the small molecular structure of the isobutyl triethoxy silane can penetrate through the cementitious surface of the waterproof coating and permeate into the concrete to react with air exposed in an acidic or alkaline environment and water molecules in a substrate to form a permanent and firm high-environmental-protection waterproof layer, and the isobutyl triethoxy silane can permeate deeply to inhibit water absorption and generate waterproof and Cl-proof effects-Has ultraviolet resistance and hasAnd (4) air permeability. Can effectively prevent the base material from corroding, loosening, stripping and mildewing the concrete and the internal reinforcing steel bar structure due to water seepage, sunshine, acid rain, deicing salt and seawater erosion, thereby prolonging the service life of the building.
In a second aspect, the present application provides a construction method of a polymer cement-based waterproof coating, which adopts the following technical scheme:
a construction method of a polymer cement-based waterproof coating comprises the following steps:
s1, base layer processing: cleaning, removing ash and impurities of the base layer, and leveling the base layer;
s2, preparation of the polymer cement-based waterproof coating: adding the powder into the liquid material according to the mixing ratio of the powder to the liquid material, stirring while adding, and uniformly stirring to obtain the polymer cement-based waterproof coating;
s3, construction: and (3) smearing the polymer cement-based waterproof coating on the surface of the base layer, and trowelling to finish construction.
By adopting the technical scheme, the base layer is treated firstly, so that the influence of properties such as impurities on the surface of the base layer on mutual condensation in the film forming process of the waterproof paint can be reduced, the powder is added into the liquid material, and compared with the situation that the liquid material is added into the powder material, the dispersion concentration of substances in the powder material can be reduced, and the phenomena of deformation and agglomeration under the condition of large concentration of the powder material are reduced.
Preferably, the stirring time in the step S2 is 30-45min, and the construction temperature in the step S3 is: 5-30 ℃.
By adopting the technical scheme, the stirring is not uniform enough when the stirring time is too short, and the waterproof coating begins to coagulate when the stirring time is too long; the proper temperature can improve the promotion and generation of reactions such as the condensation and the waterproof performance of the waterproof coating in the largest range.
In summary, the present application has the following beneficial effects:
1. as the accelerator is added into the powder, the hydration reaction speed of the cement can be promoted by the accelerator, so that the film formation of the polymer cement-based waterproof coating is reduced to within 3h, and the effect of shortening the setting time of the waterproof coating is achieved.
2. In the application, the early strength agent is preferably added into the liquid material, and the liquid material can further improve the hydration reaction speed of the cement, so that the effect of shortening the setting time of the waterproof coating is obtained.
3. According to the construction method, the base layer is treated firstly, then the polymer cement-based waterproof coating is prepared, and finally construction is carried out, so that the performance of the waterproof coating can be well exerted.
Detailed Description
The present application will be described in further detail with reference to examples.
The following raw materials are all commercially available products, and specifically comprise:
aluminum oxide clinker: sichuan Haihuyidede decorative industry, Inc., with 120 mesh specification;
alcohol amine: adopting methyldiethanolamine, Wuhanji industry upgrading chemical company Limited, the purity is more than or equal to 99.0%;
polymeric aluminum sulfate: the alkalization degree is 25-45% of Wuhanji industry promotion chemical company Limited;
acetic acid: shanghai Michelin Biochemical technology, Inc., model A801090;
early strength agent: adopting methacrylic acid, Tianjin's maotai chemical reagent factory, the content is not less than 99.0%,
or adopts calcium formate, Wuhanji industry promotion chemical company Limited, the content is 99 percent;
film-forming auxiliary agent: dodecyl alcohol ester, Suzhou sailing Biotech limited, 99%;
defoaming agent: polyether modified organosilicon, Shenzhen Jipeng silicon fluorine material Co., Ltd, model SH-200;
preservative: adopting isobutyl triethoxy silane, Beijing Laipona New technology Co., Ltd., content is 99%;
dispersing agent: sodium hexametaphosphate, 99% by count from sincery biotechnology limited, denying;
emery: shandongteng new building materials Co., Ltd, 100-;
quartz powder: the quartz processing plant of auspicious Zhi of east China sea county, 200 meshes.
Preparation example
Preparation example 1
The accelerator comprises: 5kg of aluminoxy clinker, 2kg of alcohol amine, 1kg of polyaluminium sulfate and 0.5kg of acetic acid.
The preparation process comprises the following steps: adding the aluminous clinker into water, stirring and dissolving at 60 ℃, then adding acetic acid, continuously stirring for 40min, then adding alcohol amine, stirring for 30min, then adding polyaluminium sulfate, dissolving and stirring for 20min, and finally cooling and drying.
Preparation example 2
The present preparation example differs from preparation example 1 in that the accelerator comprises: 5kg of aluminoxy clinker, 4kg of alcohol amine, 3kg of polyaluminium sulfate and 1.5kg of acetic acid.
Preparation example 3
The present preparation example differs from preparation example 1 in that the accelerator comprises: 5kg of aluminoxy clinker, 6kg of alcohol amine, 5kg of polyaluminium sulfate and 3kg of acetic acid.
Preparation example 4
The present preparation example differs from preparation example 1 in that the accelerator comprises: 7kg of aluminoxy clinker, 2kg of alcohol amine, 3kg of polyaluminium sulfate and 3kg of acetic acid.
Preparation example 5
The present preparation example differs from preparation example 1 in that the accelerator comprises: 7kg of aluminoxy clinker, 4kg of alcohol amine, 5kg of polyaluminium sulfate and 0.5kg of acetic acid.
Preparation example 6
The present preparation example differs from preparation example 1 in that the accelerator comprises: 7kg of aluminoxy clinker, 6kg of alcohol amine, 1kg of polyaluminium sulfate and 1.5kg of acetic acid.
Preparation example 7
The present preparation example differs from preparation example 1 in that the accelerator comprises: 9kg of aluminoxy clinker, 2kg of alcohol amine, 5kg of polyaluminium sulfate and 1.5kg of acetic acid.
Preparation example 8
The present preparation example differs from preparation example 1 in that the accelerator comprises: 9kg of aluminoxy clinker, 4kg of alcohol amine, 1kg of polyaluminium sulfate and 3.0kg of acetic acid.
Preparation example 9
The present preparation example differs from preparation example 1 in that the accelerator comprises: 9kg of aluminoxy clinker, 6kg of alcohol amine, 3kg of polyaluminium sulfate and 0.5kg of acetic acid.
Preparation example 10
The present preparation example differs from preparation example 1 in that the accelerator comprises: 9kg of aluminoxy clinker.
Preparation example 11
The present preparation example differs from preparation example 1 in that the accelerator comprises: 9kg of alcohol amine.
Preparation example 12
The present preparation example differs from preparation example 1 in that the accelerator comprises: 9kg of polyaluminium sulfate.
Preparation example 13
The present preparation example differs from preparation example 1 in that the accelerator comprises: acetic acid (9 kg).
Preparation example 14
The present preparation example differs from preparation example 1 in that the accelerator comprises: 6kg of aluminoxy clinker, 2kg of alcohol amine and 1kg of acetic acid.
Examples
Example 1
The polymer cement waterproof coating comprises a high-molecular emulsion and powder, wherein the weight ratio of the high-molecular emulsion to the powder is 0.8: 1; the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 61kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 50kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 7kg of the accelerator of preparation example 7.
Example 2
Differences from example 1: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 61kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 50kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 6kg of the accelerator of preparation example 7.
Example 3
Differences from example 1: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 61kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 50kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 5kg of the accelerator of preparation example 7.
Example 4
Differences from example 1: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 61kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 50kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 4kg of the accelerator of preparation example 7.
Example 5
Differences from example 1: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 61kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 50kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 3kg of the accelerator of preparation example 7.
Example 6
Differences from example 1: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 62kg of acrylate emulsion, 7kg of sodium hexametaphosphate, 7kg of dodecanoic acid ester, 3kg of isobutyl triethoxysilane, 3kg of water and 2kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 49kg of cement, 1.9kg of quartz powder, 8.0kg of carborundum and 6kg of the accelerator of preparation example 7.
Example 7
Differences from example 1: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 63kg of acrylate emulsion, 8kg of sodium hexametaphosphate, 8kg of dodecanoic acid ester, 4kg of isobutyl triethoxysilane, 4kg of water and 3kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 48kg of cement, 1.8kg of quartz powder, 7.0kg of carborundum and 6kg of the accelerator of preparation example 7.
Example 8
Differences from example 1: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 64kg of acrylate emulsion, 9kg of sodium hexametaphosphate, 9kg of dodecanoic acid ester, 5kg of isobutyl triethoxysilane, 5kg of water and 4kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 47kg of cement, 1.7kg of quartz powder, 6.0kg of carborundum and 6kg of the accelerator of preparation example 7.
Example 9
Differences from example 1: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 70kg of acrylate emulsion, 10kg of sodium hexametaphosphate, 10kg of dodecanoic acid ester, 6kg of isobutyl triethoxysilane, 6kg of water and 5kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 46kg of cement, 1.6kg of quartz powder, 5.0kg of carborundum and 6kg of the accelerator of preparation example 7.
Example 10
Differences from example 1: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 70kg of acrylate emulsion, 10kg of sodium hexametaphosphate, 10kg of dodecanoic acid ester, 6kg of isobutyl triethoxysilane, 6kg of water and 5kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 46kg of cement, 1.6kg of quartz powder, 5.0kg of carborundum, 6kg of the accelerator of preparation example 7 and 1kg of methacrylic acid.
Example 11
Differences from example 1: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 70kg of acrylate emulsion, 10kg of sodium hexametaphosphate, 10kg of dodecanoic acid ester, 6kg of isobutyl triethoxysilane, 6kg of water and 5kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 46kg of cement, 1.6kg of quartz powder, 5.0kg of carborundum, 6kg of the accelerator of preparation example 7 and 2kg of methacrylic acid.
Example 12
Differences from example 1: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 70kg of acrylate emulsion, 10kg of sodium hexametaphosphate, 10kg of dodecanoic acid ester, 6kg of isobutyl triethoxysilane, 6kg of water and 5kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 46kg of cement, 1.6kg of quartz powder, 5.0kg of carborundum, 6kg of the accelerator of preparation example 7 and 3kg of methacrylic acid.
Example 13
Differences from example 1: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 70kg of acrylate emulsion, 10kg of sodium hexametaphosphate, 10kg of dodecanoic acid ester, 6kg of isobutyl triethoxysilane, 6kg of water and 5kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 46kg of cement, 1.6kg of quartz powder, 5.0kg of carborundum, 6kg of the accelerator of preparation example 7 and 4kg of methacrylic acid.
Example 14
Differences from example 1: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 70kg of acrylate emulsion, 10kg of sodium hexametaphosphate, 10kg of dodecanoic acid ester, 6kg of isobutyl triethoxysilane, 6kg of water and 5kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 46kg of cement, 1.6kg of quartz powder, 5.0kg of carborundum, 6kg of the accelerator of preparation example 7 and 5kg of methacrylic acid.
Example 15
Differences from example 1: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 70kg of acrylate emulsion, 10kg of sodium hexametaphosphate, 10kg of dodecanoic acid ester, 6kg of isobutyl triethoxysilane, 6kg of water and 5kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 46kg of cement, 1.6kg of quartz powder, 5.0kg of carborundum, 6kg of the accelerator of preparation example 7 and 4kg of calcium formate.
Example 16
The differences from example 2 are: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 61kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 50kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 6kg of the accelerator of preparation example 1.
Example 17
The differences from example 2 are: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 61kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 50kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 6kg of the accelerator of preparation example 2.
Example 18
The differences from example 2 are: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 61kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 50kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 6kg of the accelerator of preparation example 3.
Example 19
The differences from example 2 are: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 61kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 50kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 6kg of the accelerator of preparation example 4.
Example 20
The differences from example 2 are: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 61kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 50kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 6kg of the accelerator of preparation example 5.
Example 21
The differences from example 2 are: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 61kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 50kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 6kg of the accelerator of preparation example 5.
Example 22
The differences from example 2 are: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 61kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 50kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 6kg of the accelerator of preparation example 6.
Example 23
The differences from example 2 are: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 61kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 50kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 6kg of the accelerator of preparation example 8.
Example 24
The differences from example 2 are: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 61kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 50kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 6kg of the accelerator of preparation example 9.
Example 25
The differences from example 2 are: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 61kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 50kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 6kg of the accelerator of preparation example 10.
Example 26
The differences from example 2 are: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 61kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 50kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 6kg of the accelerator of preparation example 11.
Example 27
The differences from example 2 are: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 61kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 50kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 6kg of the accelerator of preparation example 12.
Example 28
The differences from example 2 are: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 61kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 50kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 6kg of the accelerator of preparation example 13.
Example 29
The differences from example 2 are: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 61kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 50kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 6kg of the accelerator of preparation example 14.
Example 30
Differences from example 1: a polymer cement waterproof coating comprises a high molecular emulsion and powder, wherein the weight ratio of the high molecular emulsion to the powder is 1: 1; the polymer emulsion is prepared by mixing the following raw materials in parts by weight: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 61kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 50kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 6kg of the accelerator of preparation example 7.
Example 31
Differences from example 1: the polymer cement waterproof coating comprises a high-molecular emulsion and powder, wherein the weight ratio of the high-molecular emulsion to the powder is 1.2: 1; the polymer emulsion is prepared by mixing the following raw materials in parts by weight: the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 61kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 50kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 6kg of the accelerator of preparation example 7.
Comparative example
Comparative example 1
The polymer cement waterproof coating comprises a high-molecular emulsion and powder, wherein the weight ratio of the high-molecular emulsion to the powder is 1.3: 1; the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 63kg of acrylate emulsion, 8kg of sodium hexametaphosphate, 8kg of dodecanoic acid ester, 4kg of isobutyl triethoxysilane, 4kg of water and 3kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 48kg of cement, 1.8kg of quartz powder and 7kg of carborundum.
Comparative example 2
The polymer cement waterproof coating comprises a high-molecular emulsion and powder, wherein the weight ratio of the high-molecular emulsion to the powder is 1.3: 1; the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 63kg of acrylate emulsion, 8kg of sodium hexametaphosphate, 8kg of dodecanoic acid ester, 4kg of isobutyl triethoxysilane, 4kg of water and 3kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 48kg of cement, 1.8kg of quartz powder, 7kg of carborundum and 1kg of the accelerator of preparation example 7.
Comparative example 3
The polymer cement waterproof coating comprises a high-molecular emulsion and powder, wherein the weight ratio of the high-molecular emulsion to the powder is 1.3: 1; the polymer emulsion is prepared by mixing the following raw materials in parts by weight: 63kg of acrylate emulsion, 8kg of sodium hexametaphosphate, 8kg of dodecanoic acid ester, 4kg of isobutyl triethoxysilane, 4kg of water and 3kg of polyether modified organic silicon; the powder is prepared by mixing the following raw materials in parts by weight: 48kg of cement, 1.8kg of quartz powder, 7kg of carborundum, 1kg of accelerator of preparation example 7 and 0.1kg of methacrylic acid.
Performance test
Tensile strength, barrier properties, open time, and tack-free time of examples 1 to 29 and comparative examples 1 to 3 were examined.
Detection method/test method
The tensile strength is measured according to the method of GB/T23445-2009 polymer cement waterproof coating, the impermeability is measured according to the method of GB/T23445-2009 polymer cement waterproof coating, and the surface drying time and the actual drying time are measured according to the experimental method of GB/T16777-2008 building waterproof coating.
TABLE 1 Polymer Cement-based waterproofing paint Performance test results
| Compressive strength (MPa) | Open time (h) | Actual drying time (h) | Impermeability (MPa) | |
| Example 1 | 3.84 | 1.9 | 4.0 | 0.99 |
| Example 2 | 3.82 | 1.7 | 3.8 | 0.98 |
| Example 3 | 3.81 | 2.0 | 4.1 | 0.96 |
| Example 4 | 3.72 | 2.3 | 4.3 | 0.92 |
| Example 5 | 3.71 | 2.4 | 4.4 | 0.91 |
| Example 6 | 3.41 | 2.5 | 4.5 | 0.89 |
| Example 7 | 3.21 | 2.7 | 4.8 | 0.87 |
| Example 8 | 3.17 | 3.1 | 4.9 | 0.85 |
| Example 9 | 3.08 | 3.2 | 5.1 | 0.84 |
| Example 10 | 2.94 | 3.1 | 4.9 | 0.82 |
| Example 11 | 3.13 | 3.1 | 4.8 | 0.89 |
| Example 12 | 3.12 | 2.8 | 4.6 | 0.93 |
| Example 13 | 3.48 | 2.7 | 4.5 | 1.14 |
| Example 14 | 3.37 | 2.9 | 4.7 | 0.97 |
| Example 15 | 3.11 | 3.1 | 5.0 | 0.94 |
| Example 30 | 3.84 | 1.6 | 3.7 | 0.98 |
| Example 31 | 3.71 | 2.0 | 4.5 | 0.96 |
| Comparative example 1 | 2.92 | 5.9 | 7.7 | 0.73 |
| Comparative example 2 | 3.24 | 3.8 | 5.7 | 0.74 |
| Comparative example 3 | 2.97 | 2.5 | 4.7 | 0.77 |
It can be seen from the combination of examples 1-10 and comparative examples 1 and 2 and from table 1 that the changes in the raw material ratio and the raw material components of the polymer cement-based waterproof coating affect the compressive strength, the surface drying speed, the actual drying speed and the impermeability strength of the waterproof coating finally obtained. In the examples of the application, 6.1kg of acrylate emulsion, 6kg of sodium hexametaphosphate, 6kg of dodecane carbonate, 2kg of isobutyl triethoxysilane, 2kg of water and 1kg of polyether modified organic silicon are selected; the waterproof coating prepared from 5.0kg of cement, 2.0kg of quartz powder, 9.0kg of carborundum and 6kg of the accelerator of preparation example 7 has the best compressive strength, curing speed and impermeability of the waterproof coating, wherein the compressive strength reaches 3.82Mpa, the surface drying speed is 1.7h, the actual drying speed is 3.8h and the impermeability is 0.98 Mpa. The waterproof performance and the curing speed of the polymer cement-based waterproof coating are obviously improved.
As can be seen by combining examples 11-14 with Table 1, the compressive strength, setting speed and barrier properties of the polymer cement-based waterproofing coating are affected by the addition of a certain amount of methacrylic acid when the polymer cement-based waterproofing coating is prepared. In the examples of the application, 6.5kg of acrylate emulsion, 10kg of sodium hexametaphosphate, 10kg of dodecane carbonate, 6kg of isobutyl triethoxysilane, 6kg of water and 5kg of polyether modified organic silicon are selected; the compressive strength, curing speed and impermeability of the polymer cement-based waterproof coating prepared from 4.6kg of cement, 1.6kg of quartz powder, 5.0kg of carborundum, 6kg of the accelerator of preparation example 7 and 4kg of methacrylic acid are best, wherein the compressive strength reaches 3.48Mpa, the surface drying speed is 2.7h, the actual drying speed is 4.5h and the impermeability is 1.14 Mpa. The waterproof performance and the curing speed of the polymer cement-based waterproof coating are obviously improved.
As can be seen by combining examples 14 and 15 with Table 1, the effect of reducing the film forming time of the calcium formate on the polymer cement-based waterproof coating material is not as good as the effect of reducing the film forming time of the methacrylic acid on the polymer cement-based waterproof coating material.
In combination with examples 2, 30 and 31 and in combination with table 1, it can be seen that the polymer emulsions: when the proportion of the material is 0.8:1, the coagulation speed and the coagulation strength of the coating are the best.
TABLE 2 test results of the influence of the accelerator component content on the performance of the waterproof coating
| Watch stem (h) | Nut stem (h) | |
| Example 16 | 3.7 | 6.0 |
| Example 17 | 3.6 | 5.8 |
| Example 18 | 3.4 | 5.7 |
| Example 19 | 3.1 | 5.4 |
| Example 20 | 3.0 | 5.2 |
| Example 21 | 3.3 | 5.7 |
| Example 22 | 2.1 | 4.4 |
| Example 23 | 2.9 | 4.6 |
| Example 24 | 2.6 | 4.7 |
| Example 25 | 2.1 | 4.3 |
| Example 26 | 3.7 | 4.9 |
| Example 27 | 3.1 | 4.5 |
| Example 28 | 3.8 | 4.9 |
| Example 29 | 1.9 | 3.9 |
As can be seen by combining examples 16-29 with Table 2, the film formation time of the polymer cement-based waterproofing paint of example 22 was the shortest, using the accelerating agent prepared for preparation example 7, which included 9kg of aluminoxy clinker, 2kg of alcohol amine, 5kg of polyaluminium sulfate, and 1.5kg of acetic acid.
Application example 1
The polymer cement-based waterproof coating of the embodiment 22 is applied to the surface of a base layer of a building, and the construction method comprises the following steps:
s1, base layer processing:
s11, before construction, the surface of the base layer should be solid, clean and free of oil stain and other pollutants, and the base layer is thoroughly chiseled off to the solid and clean structure with aged, cracked, loose and seriously polluted surface oil stain so as to ensure the solid and intact surface of the structure;
s12, if dust exists, the adhesive force between the paint and the base layer is greatly reduced, so a high-pressure water washing machine is used for thoroughly cleaning the foreign matters and the ash layer left on the surface of the concrete.
S2, preparation of the polymer cement-based waterproof coating: stirring the powder materials in the order of slowly adding the powder materials into the liquid materials while stirring; the proportioning and the dosage of the powder and the sizing material must be strictly controlled, and the mixture is stirred for 30 min; the mixed polymer cement-based waterproof coating is not suitable for being stored for more than 30 min;
s3, construction:
s31, manually pressing and smearing the polymer cement-based waterproof paint, wherein the operation speed is high, the paint is required to be pressed towards one direction, the paint is pressed and smeared forcibly once and is immediately calendered, and surface drying can be realized 2.1h after the calendering;
s32, the polymer cement-based waterproof coating is constructed at 5 ℃ and is protected from severe environmental conditions such as insolation, rain, strong wind and the like.
Application example 2
Application example 2 differs from application example 1 in that:
s2, preparation of the polymer cement-based waterproof coating: stirring the powder materials in the order of slowly adding the powder materials into the liquid materials while stirring for 45 min;
s32, constructing the polymer cement-based waterproof coating at the ambient temperature of 15 ℃, wherein the rest is consistent with the application example 1.
Application example 3
Application example 3 differs from application example 1 in that:
s2, preparation of the polymer cement-based waterproof coating: stirring the powder materials in the order of slowly adding the powder materials into the liquid materials while stirring for 40 min;
s32, constructing the polymer cement-based waterproof coating at the ambient temperature of 23 ℃, wherein the rest is consistent with the application example 1.
Application example 4
Application example 4 differs from application example 1 in that:
s2, preparation of the polymer cement-based waterproof coating: stirring the powder materials in the order of slowly adding the powder materials into the liquid materials while stirring for 40 min;
s32, constructing the polymer cement-based waterproof coating at the environment temperature of 30 ℃, wherein the rest is consistent with the application example 1.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (9)
1. The polymer cement-based waterproof coating is characterized by being prepared from the following raw materials in parts by weight:
high-molecular emulsion: the powder is (0.8-1.2): 1; the polymer emulsion comprises the following raw materials in parts by weight: 61-70 parts of acrylate emulsion, 6-9 parts of dispersant, 6-9 parts of film-forming assistant, 2-6 parts of preservative, 2-6 parts of water and 1-5 parts of defoaming agent;
the powder comprises the following raw materials in parts by weight: 46-50 parts of cement, 16-20 parts of quartz powder, 5-9 parts of carborundum and 3-7 parts of an accelerator;
the accelerating agent is one or more of aluminum oxide clinker, alcohol amine, polyaluminium sulfate, inorganic acid and organic acid.
2. The polymer cement-based waterproofing coating according to claim 1, wherein: the weight portion of the accelerating agent is 4-6.
3. The polymer cement-based waterproofing coating according to claim 2, wherein: the accelerating agent consists of aluminum oxide clinker, alcohol amine, polyaluminium sulfate and organic acid, and the weight ratio of the aluminum oxide clinker to the alcohol amine to the polyaluminium sulfate to the organic acid is (5-9): (2-6): (1-5):(0.5-3).
4. The polymer cement-based waterproofing coating according to claim 3, wherein: the organic acid is acetic acid.
5. The polymer cement-based waterproofing coating according to claim 1, wherein: the polymer emulsion also comprises an early strength agent, and the dosage of the early strength agent is 1-5 parts.
6. The polymer cement-based waterproofing coating according to claim 5, wherein: the early strength agent is methacrylic acid or calcium formate.
7. The polymer cement-based waterproofing coating according to claim 1, wherein: the preservative is isobutyl triethoxy silane.
8. A method of applying a polymer cement-based waterproofing coating according to any of claims 1 to 7, comprising the steps of:
s1, base layer processing: cleaning, removing ash and impurities of the base layer, and leveling the base layer;
s2, preparation of the polymer cement-based waterproof coating: adding the powder into the liquid material according to the mixing ratio of the powder to the liquid material, stirring while adding, and uniformly stirring to obtain the polymer cement-based waterproof coating;
s3, construction: and (3) smearing the polymer cement-based waterproof coating on the surface of the base layer, and trowelling to finish construction.
9. The method of claim 8, wherein the waterproofing coating comprises: the stirring time in the step S2 is 30-45min, and the construction temperature in the step S3 is as follows: 5-30 ℃.
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