CN113355000A - Special polymer cement paint containing inorganic powder in liquid material - Google Patents
Special polymer cement paint containing inorganic powder in liquid material Download PDFInfo
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- CN113355000A CN113355000A CN202110748444.3A CN202110748444A CN113355000A CN 113355000 A CN113355000 A CN 113355000A CN 202110748444 A CN202110748444 A CN 202110748444A CN 113355000 A CN113355000 A CN 113355000A
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- Prior art keywords
- cement
- powder
- combinations
- inorganic
- silane
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D1/06—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances cement
- C09D1/08—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances cement with organic additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D109/00—Coating compositions based on homopolymers or copolymers of conjugated diene hydrocarbons
- C09D109/06—Copolymers with styrene
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D113/00—Coating compositions based on rubbers containing carboxyl groups
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
Abstract
The invention discloses a polymer cement coating containing inorganic powder in a liquid material. The coating comprises a liquid material A component and a powder material B component. The liquid A component contains polymer emulsion, inorganic powder with chemically active surface, silane or siloxane, and other inorganic filler or no other inorganic filler. The powder B contains cement and other components. And the mass ratio of the polymer solid to the inorganic material in the coating after the liquid material A component and the powder material B component are uniformly mixed and stirred according to a certain proportion is 1:1 to 1: 5.
Description
Title:
special polymer cement paint containing inorganic powder in liquid material
Technical Field
The invention relates to the technical field of building materials, in particular to a flexible polymer cement-based coating which is suitable for being used in a long-term soaking environment or a continuous high-humidity environment.
Background
In the field of construction, water-based coatings have been continuously concerned and promoted for their safety. The polymer cement coating is widely applied to the fields of civil buildings and commercial buildings due to the excellent bonding capability and waterproof capability of a base layer. The performance of the cement coating in service is generally greatly attenuated due to the long-term influence of the environment. The reasons for this are that the properties of the raw materials contained in the coating are influenced by the environment for a long time, and the acting force between the interfaces of the components is greatly attenuated by the influence of the environment due to a large amount of hydrophilic substances in the coating. Inorganic components in cement coatings can generally achieve stronger chemical bond linkage due to hydration of cement, and important components in the coatings, namely polymers and inorganic materials, can not form chemical bond linkage without special treatment. A common example is polymer cement coatings applied in waterproofing, where the physical and mechanical properties usually vary widely in long-term high humidity or water immersion environments.
The invention aims to solve the problem of performance defects of the polymer cement coating in a service state.
Disclosure of Invention
In order to enhance the force between the latex particles and the inorganic filler in the polymer emulsion, thereby maintaining or even improving the performance of the final coating in service, including the performance under special conditions, the method and the formula disclosed by the invention allow the filler with chemical activity on the surface to be added into the liquid in advance, and the chemical bond linkage between the surface of the filler and the surface of the latex particles is realized with the help of the compound, thereby achieving the aim.
The invention discloses a water-based flexible polymer cement coating, which comprises the following components: liquid material component and powder material component. The liquid material comprises the following components: a polymer emulsion, and at least one surface chemically active inorganic powder, comprising no or at least one inorganic filler, and one or more silanes, siloxanes or combinations thereof. The powder material comprises the following components: cement, comprising no or one or more inorganic fillers, zero or at least one auxiliary agent (cement water reducing agent, rheological auxiliary agent, bonding auxiliary agent, defoamer, dispersing auxiliary agent, and other auxiliary agents).
The inorganic powder with the surface having chemical activity is selected from crushed sand grains, silicon dioxide powder, quartz powder, mica, feldspar, diatomite and a combination thereof. Chemically reactive means having a hydroxyl or silicon hydroxyl group.
The inorganic filler is selected from the group consisting of sand, calcium carbonate, silica, titanium dioxide, zinc oxide, dolomite, barium sulfate, fly ash, metakaolin, mica, feldspar, diatomaceous earth, nepheline syenite, talc, and combinations thereof.
In some embodiments, the calcium carbonate is selected from the group consisting of ground calcium carbonate, light calcium carbonate, and combinations thereof. It preferably has an average particle size of less than 50 microns, more preferably an average particle size of less than 15 microns. The beneficial effect is that the inorganic component in the liquid material is prevented from settling after being stored for a long time.
In some embodiments, the cement included in the powder component may be a combination of different types of cement. The curing time, the strength and the chalking resistance of the coating, the color and the appearance of the coating after film forming and drying, and the hydration time and the hydration degree of cement are adjusted.
In some embodiments, the meal component comprises cement, at least one cement water reducer, and no inorganic filler. The beneficial effect is that the inorganic component content in the liquid material is improved to avoid sedimentation.
The polymer emulsion is selected from the group consisting of pure acrylic, styrene acrylic, vinyl acetate ethylene copolymer (VAE), styrene butadiene copolymer (butylbenzene), vinyl acetate acrylic, and combinations thereof. Wherein at least one of the emulsions is silane-modified or carries acidic functional groups.
The silane, siloxane, has at least two silicon hydroxyl groups per molecule hydrolyzed or contains at least one epoxy functional group and at least one silicon hydroxyl group per molecule hydrolyzed. The silanes and siloxanes include silanes, siloxanes, halogenated silanes, silanols, silyl ethers, and combinations thereof. The beneficial effect is that chemical bond linkage is established between the polymer and the active inorganic powder.
In some embodiments, the liquid component comprises a styrene-butadiene emulsion with acidic functionality, a chemically-reactive inorganic powder on the surface, and a silane or siloxane comprising at least one epoxy functional group and at least one hydrolyzable functional group. The hydrolyzable functional groups include silanes, siloxanes, halogenated silanes, silanols, silyl ethers and combinations thereof. The styrene-butadiene emulsion has the beneficial effect that the stability of the final product in the service environment is improved by the styrene-butadiene emulsion with better hydrolysis resistance.
In some embodiments, the liquid component comprises a silane-modified acrylic emulsion, a surface chemically reactive inorganic powder, and a silane or siloxane that hydrolyzes to produce at least two silicon hydroxyl groups. The hydrolyzable functional groups include silanes, siloxanes, halogenated silanes, silanols, silyl ethers and combinations thereof.
The mass ratio of the polymer solids to the inorganic material is 1:1 to 1: 5.
Detailed Description
The present invention is described in further detail below with reference to examples. The embodiments of the present invention have been described in an illustrative rather than a restrictive sense, and are intended to assist those skilled in the art in understanding the present invention. Alterations and modifications may be effected thereto, by those of skill in the art, without departing from the scope of the invention in its broadest aspects and as defined by the appended claims.
In order to ensure that a coating film prepared by mixing the liquid material and the powder material has flexibility at normal temperature, the glass transition temperature (Tg) of the adopted polymer or one of the polymers in the polymer combination needs to be lower than 10 ℃.
Example 1:
the coating of the embodiment comprises two components of liquid material and powder material, and the specific mixture ratio is as follows:
the liquid material comprises the following components:
silane modified acrylic emulsion: 100 portions of
Ground calcium carbonate powder: 90 portions of
Silicon dioxide powder: 30 portions of
Silane: 0.4 portion of
Defoaming agent: 0.4 portion of
Wetting agent: 0.3 part
Thickening agent: 0.1 to 0.2 portion
Surfactant (b): 1.5 parts of
The powder material comprises the following components:
cement: 22 portions of
High-efficiency water reducing agent: 0.2 part
The silane modified acrylic emulsion of this example was purchased from the market and had a glass transition temperature of less than 10 ℃.
The preferred average particle size of the heavy calcium carbonate powder in this example is less than 15 microns.
In this example, silica powder was purchased from the market and had a particle size of 325 mesh.
The silane in this example was purchased from wacker chemistry.
Antifoam agents are purchased from basf in this example.
The wetting agent in this example was an aqueous wetting dispenser, purchased from Haimines.
The thickener in this example was purchased from the market and is a product of the dow chemical.
In this example, the cement was 42.5 type, purchased from the market, and produced by the Abbo Cement company.
The high-efficiency water reducing agent in the embodiment is a powdery naphthalene water reducing agent and is purchased from the market.
And respectively uniformly stirring the liquid material and the powder material according to the proportion to prepare the flexible cement coating, pouring the powder material into the liquid material, and fully stirring until no powder balls exist, thus obtaining the flexible cement coating and applying the flexible cement coating to construction or film making.
Testing according to the method of national standard GB/T23445-2009 and referring to the regulations of the waterproof standard GB/T50108-2008 of underground engineering, and obtaining basic performances such asThe following table shows.
As can be seen from the performance table, the tensile strength of the sample prepared according to the formulation in example 1 after 168 hours of immersion in water is higher than 1.5MPa specified in the underground engineering waterproofing Specification GB/T50108-2008, and the elongation at break is also higher than 80%.
Example 2:
the coating of the embodiment comprises two components of liquid material and powder material, and the specific mixture ratio is as follows:
the liquid material comprises the following components:
styrene-butadiene emulsion containing carboxylic acid groups: 100 portions of
Ground calcium carbonate powder: 90 portions of
Silicon dioxide powder: 35 portions of
Epoxy silane: 0.4 portion of
Defoaming agent: 0.4 portion of
Wetting agent: 0.3 part
Thickening agent: 0.1 part
The powder material comprises the following components:
cement: 15 portions of
High-efficiency water reducing agent: 0.2 part of the carboxylic acid group-containing styrene-butadiene emulsion of this example was purchased from the market and had a glass transition temperature of less than-5 ℃.
The preferred average particle size of the heavy calcium carbonate powder in this example is less than 15 microns.
In this example, silica powder was purchased from the market and had a particle size of 325 mesh.
The epoxysilane is purchased from the market in this example.
Antifoam agents are purchased from basf in this example.
The wetting agent in this example was an aqueous wetting dispenser, purchased from Haimines.
The thickener in this example was purchased from the market and is a product of the dow chemical.
In the embodiment, the cement is 42.5 type and is purchased from the market.
The high-efficiency water reducing agent in the embodiment is a powdery naphthalene water reducing agent and is purchased from the market.
And respectively uniformly stirring the liquid material and the powder material according to the proportion to prepare the flexible cement coating, pouring the powder material into the liquid material, and fully stirring until no powder balls exist, thus obtaining the flexible cement coating and applying the flexible cement coating to construction or film making.
The test is carried out according to the method of national standard GB/T23445-2009 and the standard GB/T50108-2008 of underground engineering waterproof specifications are referred, and the basic performance is shown in the following table. The competitive products are purchased from the market and are mainstream JS 2 type products.
As can be seen from the comparative data, the formula in the embodiment 2 has a tensile strength after soaking for 168 hours which is far better than that of a competitive product, and has very excellent service performance under long-term soaking or long-term high-humidity environment.
Example 3:
the coating of the embodiment consists of two components, namely liquid material and powder material, and the mass ratio of the polymer to the inorganic material in the final formula is 1:1, 1:3 and 1:5 respectively. The concrete mixture ratio is as follows:
the styrene-butadiene emulsion of this example was purchased from the market, and had a carboxylic acid group and a glass transition temperature of less than-10 ℃.
The preferred average particle size of the heavy calcium carbonate powder in this example is less than 15 microns.
In this example, silica powder was purchased from the market and had a particle size of 325 mesh.
The epoxysilane is purchased from the market in this example.
Antifoam agents are purchased from basf in this example.
The wetting agent in this example was an aqueous wetting dispenser, purchased from Haimines.
Both thickeners in this example were purchased from the market.
In the embodiment, the cement is 52.5 type and is purchased from the market.
The high-efficiency water reducing agent in the embodiment is a powdery polycarboxylate water reducing agent and is purchased from the market.
And respectively uniformly stirring the liquid material and the powder material according to the proportion to prepare the flexible cement coating, pouring the powder material into the liquid material, and fully stirring until no powder balls exist, thus obtaining the flexible cement coating and applying the flexible cement coating to construction or film making.
The test is carried out according to the method of national standard GB/T23445-2009 and the standard GB/T50108-2008 of underground engineering waterproof specifications are referred, and the basic performance is shown in the following table. The competitive products are purchased from the market and are mainstream JS 2 type products.
The properties of the three formulations are compared as follows.
From the comparative data, it is clear that the tensile strength after immersion in water is much lower than that in the case of the mass ratio of 1:3 in the case of the polymer to the substance and the material being 1:1 and 1: 5. The tensile strength after 168 hours immersion in water for both cases of a mass ratio of 1:1 grade 1:5 is close to that of the competition shown in example 2, and the tensile strength under immersed or long-term wet service conditions is not advantageous compared to the competition already commercialized.
Claims (11)
1. An aqueous flexible polymer cement coating comprising:
A. a liquid feed composition comprising: a polymer emulsion, and at least one surface chemically active inorganic powder, comprising no or at least one inorganic filler, and one or more silanes, siloxanes or combinations thereof.
B. The powder component comprises: cement, containing no or one or more inorganic fillers, containing or not containing auxiliaries (cement water reducers, rheology auxiliaries, bonding auxiliaries, defoamers, dispersing auxiliaries, etc.).
2. The surface chemically active inorganic powder of claim 1 selected from the group consisting of crushed sand, silica flour, quartz flour, mica, feldspar, diatomaceous earth and combinations thereof.
3. The inorganic filler of claim 1 selected from the group consisting of sand, calcium carbonate, silica, titanium dioxide, zinc oxide, dolomite, barium sulfate, fly ash, metakaolin, mica, feldspar, diatomaceous earth, nepheline syenite, talc, and combinations thereof.
4. The calcium carbonate of claim 3 selected from the group consisting of ground calcium carbonate, light calcium carbonate and combinations thereof. It preferably has an average particle size of less than 50 microns, more preferably an average particle size of less than 15 microns.
5. The powder component of claim 1 wherein the cement comprises a combination of different types of cement.
6. The powder component of claim 1 comprising cement, no other inorganic filler, at least one cement water reducer.
7. The polymer emulsion of claim 1 selected from the group consisting of pure acrylic, styrene acrylic, vinyl acetate ethylene copolymer (VAE), styrene butadiene copolymer (butylbenzene), vinyl acetate acrylic, and combinations thereof. Wherein at least one of the emulsions is silane-modified or carries acidic functional groups.
8. The silane of claim 1, wherein the siloxane upon hydrolysis yields at least two silicon hydroxyl functional groups per molecule or at least one epoxy functional group and at least one silicon hydroxyl functional group per molecule. The silanes and siloxanes include silanes, siloxanes, halogenated silanes, silanols, silyl ethers, and combinations thereof.
9. The liquid component of claim 1, comprising a styrene-butadiene emulsion having acidic functional groups, a chemically reactive inorganic powder on the surface, and a silane or siloxane that hydrolyzes to produce at least one epoxy functional group and at least one silicon hydroxyl functional group. The hydrolyzable functional groups include silanes, siloxanes, halogenated silanes, silanols, silyl ethers and combinations thereof.
10. The liquid composition of claim 1, comprising a silane-modified acrylic emulsion, a surface chemically reactive inorganic powder, and a silane or siloxane that hydrolyzes to produce at least two silicon hydroxyl groups. The hydrolyzable functional groups include silanes, siloxanes, halogenated silanes, silanols, silyl ethers and combinations thereof.
11. The mass ratio of polymer solids to inorganic material of claim 1 is from 1:1 to 1: 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110748444.3A CN113355000A (en) | 2021-07-02 | 2021-07-02 | Special polymer cement paint containing inorganic powder in liquid material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110748444.3A CN113355000A (en) | 2021-07-02 | 2021-07-02 | Special polymer cement paint containing inorganic powder in liquid material |
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| CN113355000A true CN113355000A (en) | 2021-09-07 |
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| CN202110748444.3A Pending CN113355000A (en) | 2021-07-02 | 2021-07-02 | Special polymer cement paint containing inorganic powder in liquid material |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103539410A (en) * | 2013-11-11 | 2014-01-29 | 苏州市姑苏新型建材有限公司 | Novel polymer cement waterproof coating formula |
| CN104129950A (en) * | 2014-08-04 | 2014-11-05 | 武汉理工大学 | High flexible fiber reinforced polymer cement waterproof coating |
| CN105419545A (en) * | 2015-12-24 | 2016-03-23 | 桂林市和鑫防水装饰材料有限公司 | Polymer cement waterproof coating and preparation method thereof |
| WO2019126520A1 (en) * | 2017-12-22 | 2019-06-27 | Swimc Llc | High performance aqueous coating compositions |
| US20200208002A1 (en) * | 2018-12-28 | 2020-07-02 | Beijing Oriental Yuhong Waterproof Technology Co. Ltd. | Highly water-resistant, flexible cementitious coating |
-
2021
- 2021-07-02 CN CN202110748444.3A patent/CN113355000A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103539410A (en) * | 2013-11-11 | 2014-01-29 | 苏州市姑苏新型建材有限公司 | Novel polymer cement waterproof coating formula |
| CN104129950A (en) * | 2014-08-04 | 2014-11-05 | 武汉理工大学 | High flexible fiber reinforced polymer cement waterproof coating |
| CN105419545A (en) * | 2015-12-24 | 2016-03-23 | 桂林市和鑫防水装饰材料有限公司 | Polymer cement waterproof coating and preparation method thereof |
| WO2019126520A1 (en) * | 2017-12-22 | 2019-06-27 | Swimc Llc | High performance aqueous coating compositions |
| US20200208002A1 (en) * | 2018-12-28 | 2020-07-02 | Beijing Oriental Yuhong Waterproof Technology Co. Ltd. | Highly water-resistant, flexible cementitious coating |
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Application publication date: 20210907 |
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