CN114806259A - Coated modified nano titanium dioxide compound, preparation method and application thereof, and waterproof coating - Google Patents
Coated modified nano titanium dioxide compound, preparation method and application thereof, and waterproof coating Download PDFInfo
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- CN114806259A CN114806259A CN202210263616.2A CN202210263616A CN114806259A CN 114806259 A CN114806259 A CN 114806259A CN 202210263616 A CN202210263616 A CN 202210263616A CN 114806259 A CN114806259 A CN 114806259A
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- titanium dioxide
- nano titanium
- modified nano
- coated modified
- glass beads
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- 238000000576 coating method Methods 0.000 title claims abstract description 45
- 239000011248 coating agent Substances 0.000 title claims abstract description 43
- -1 modified nano titanium dioxide compound Chemical class 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title abstract description 13
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000011521 glass Substances 0.000 claims abstract description 23
- 239000011324 bead Substances 0.000 claims abstract description 20
- 150000001875 compounds Chemical class 0.000 claims abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 20
- 239000003638 chemical reducing agent Substances 0.000 claims description 19
- 239000000843 powder Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 17
- 239000000839 emulsion Substances 0.000 claims description 16
- 239000011344 liquid material Substances 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 15
- 239000011259 mixed solution Substances 0.000 claims description 14
- 239000002518 antifoaming agent Substances 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 11
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 10
- 239000004568 cement Substances 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 10
- 239000000080 wetting agent Substances 0.000 claims description 10
- 239000011398 Portland cement Substances 0.000 claims description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 4
- 230000000844 anti-bacterial effect Effects 0.000 claims description 4
- 239000003899 bactericide agent Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 125000000129 anionic group Chemical group 0.000 claims description 3
- 239000003139 biocide Substances 0.000 claims description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 3
- VUWCWMOCWKCZTA-UHFFFAOYSA-N 1,2-thiazol-4-one Chemical class O=C1CSN=C1 VUWCWMOCWKCZTA-UHFFFAOYSA-N 0.000 claims description 2
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 125000001931 aliphatic group Chemical group 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 239000002480 mineral oil Substances 0.000 claims description 2
- 235000010446 mineral oil Nutrition 0.000 claims description 2
- DGVVJWXRCWCCOD-UHFFFAOYSA-N naphthalene;hydrate Chemical compound O.C1=CC=CC2=CC=CC=C21 DGVVJWXRCWCCOD-UHFFFAOYSA-N 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 2
- 229920005552 sodium lignosulfonate Polymers 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 3
- 239000000470 constituent Substances 0.000 claims 1
- 239000003973 paint Substances 0.000 abstract description 4
- 230000006750 UV protection Effects 0.000 abstract description 3
- 230000002209 hydrophobic effect Effects 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 description 10
- 239000002994 raw material Substances 0.000 description 5
- DHNRXBZYEKSXIM-UHFFFAOYSA-N chloromethylisothiazolinone Chemical compound CN1SC(Cl)=CC1=O DHNRXBZYEKSXIM-UHFFFAOYSA-N 0.000 description 3
- 239000004005 microsphere Substances 0.000 description 3
- 229940058020 2-amino-2-methyl-1-propanol Drugs 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- CBTVGIZVANVGBH-UHFFFAOYSA-N aminomethyl propanol Chemical compound CC(C)(N)CO CBTVGIZVANVGBH-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 101001011637 Dendroaspis polylepis polylepis Toxin MIT1 Proteins 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 241001574947 Selania Species 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Classifications
-
- 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
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D123/04—Homopolymers or copolymers of ethene
- C09D123/08—Copolymers of ethene
- C09D123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C09D123/0853—Vinylacetate
-
- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
Abstract
The invention belongs to the field of waterproof paint preparation, and discloses a coated modified nano titanium dioxide compound, a preparation method and application thereof, and a waterproof paint. The compound is prepared by coating the surface of nano titanium dioxide with glass beads. The coating modified nano titanium dioxide compound enables the formed waterproof coating to reach the waterproof grade I index of a roof, improves the ultraviolet resistance and the heat insulation capability of the waterproof coating, and enables the waterproof coating to have a hydrophobic effect.
Description
Technical Field
The invention belongs to the field of waterproof paint preparation, and particularly relates to a coated modified nano titanium dioxide compound, a preparation method and application thereof, and a waterproof paint.
Background
The roof waterproof grade is classified into I grade to IV grade according to the engineering property and the requirements on the living importance degree and the use function of the country and people. The service life of the general building waterproof material used in the market at present is about 10 years, and the waterproof material has poor weather resistance, is easy to age and does not insulate heat. However, alumina and silicon are mostly used for coating the nano titanium dioxide in the conventional nano titanium dioxide waterproof coating on the market at present, but the coating layer has hydrophilic property, so that the coating layer is not beneficial to waterproof construction.
In the prior art, CN109052465A mainly melts boron trioxide in glass beads at high temperature to generate gaps, and nano titanium dioxide is attached to the gaps of the glass beads through high-speed stirring, belonging to physical attachment.
Therefore, there is a need to provide a coated modified nano-titanium dioxide composite, a preparation method thereof, and a waterproof coating composed of the composite.
Disclosure of Invention
The invention aims to provide a coated modified nano titanium dioxide compound, a preparation method and application thereof and a waterproof coating aiming at the defects of the prior art. The coating modified nano titanium dioxide compound enables the formed waterproof coating to reach the waterproof grade I index of a roof, improves the ultraviolet resistance and the heat insulation capability of the waterproof coating, and enables the waterproof coating to have a hydrophobic effect.
In order to achieve the above object, the present invention provides, in a first aspect, a coated modified nano-titania composite, which is prepared by coating a surface of nano-titania with glass beads.
According to the invention, the weight ratio of the glass microspheres to the nano titanium dioxide is (1-3): (10-20).
In the present invention, the glass beads have SiO as a main component 2 >67％，CaO>8.0％，MgO>2.5％，Na 2 O<14％，Al 2 O 3 0.5-2.0% of Fe 2 O 3 >0.15% and the other 2.0%, according to the present invention, preferably, the glass beads have a particle size of 10 to 135 μ M, preferably 3M cenospheres, more preferably 3M cenospheres having a particle size of 30 μ M, 3M cenospheres having a particle size of 40 μ M, or 3M cenospheres having a particle size of 80 μ M, and still more preferably 3M cenospheres having a model number K46.
According to the present invention, preferably, the nano titanium dioxide has a particle size of 60 to 120 nm. Further preferably, the nano titanium dioxide is 100nm, 80nm or 70 nm.
The second aspect of the present invention provides a preparation method of the coated modified nano titanium dioxide composite, which comprises: uniformly stirring and mixing the nano titanium dioxide, water, a pH regulator and a wetting agent to obtain a mixed solution; and (3) uniformly stirring and mixing the glass beads and the mixed solution, and filtering and drying to obtain the coated modified nano titanium dioxide compound.
In the present invention, as a preferable scheme, the preparation method of the coating modified nano titanium dioxide compound comprises: firstly, adding nano titanium dioxide into water for dissolving, then adding a pH regulator to ensure that the pH of the system is within the range of 9-11, uniformly stirring, and then adding a wetting agent to obtain a mixed solution; and (3) uniformly stirring and mixing the glass beads and the mixed solution, and filtering and drying to obtain the coated modified nano titanium dioxide compound.
According to the invention, preferably, the pH regulator is a hydroxyl-containing organic amine compound, and further preferably, the pH regulator is a mixture with the content of 2-amino-2-methyl-1-propanol being 95% and the content of water being 5% based on the total weight of the pH regulator; adding the pH regulator to make the pH of the mixed solution be 9-11.
According to the invention, the wetting agent is preferably a volatile organic-free, preferably anionic wetting agent which is very water-soluble and well compatible with the polymer system; the dosage ratio of the wetting agent to the nano titanium dioxide is (5-10): (100-200).
According to the invention, the ratio of the water to the nano titanium dioxide is preferably (200- & 400): (100-200).
According to the present invention, preferably, the temperature at which the glass microspheres and the mixed solution are uniformly mixed with stirring is controlled to be 75 to 85 ℃.
According to the invention, the stirring speed for uniformly stirring and mixing the glass beads and the mixed solution is preferably 900-1200r/min, and the time is preferably 15-25 min.
According to the present invention, preferably, the temperature of the drying process is 55 to 65 ℃.
The third aspect of the invention provides the application of the coated modified nano titanium dioxide compound as a component of a waterproof coating.
The invention provides a waterproof coating in a fourth aspect, which comprises powder and liquid materials;
the powder material comprises: coating the modified nano titanium dioxide compound, the ash cement, the heavy calcium carbonate and the water reducing agent;
the liquid material comprises: emulsions, water, biocides and defoamers;
the coated modified nano titanium dioxide compound is the coated modified nano titanium dioxide compound in any one of claims 1 to 3.
According to the invention, preferably, the powder comprises the following components in parts by weight: 100 portions of coating modified nano titanium dioxide compound, 200 portions of cement, 300 portions of ash cement, 500 portions of heavy calcium carbonate and 2-6 portions of water reducing agent.
According to the invention, preferably, the liquid material comprises the following components in parts by weight: 850 parts of emulsion 750-.
According to the invention, the powder material and the liquid material are preferably used in a ratio of (1-1.2): (0.8-1).
In the present invention, the preparation method of the waterproof coating material comprises:
s1: uniformly mixing and stirring the coated modified nano titanium dioxide compound, the ash cement, the heavy calcium carbonate and the water reducing agent to obtain powder;
s2: mixing and stirring the emulsion, water, a bactericide and a defoaming agent uniformly to obtain the liquid material;
s3: and mixing the powder material and the liquid material in proportion to obtain the waterproof coating.
According to the invention, the cement is preferably Portland cement and/or sulpho-aluminous cement. More preferably, the Portland cement is at least one of Portland cement Nos. 32.5, 42.5 and 52.5, and still more preferably Portland cement No. 42.5.
According to the present invention, preferably, the particle size of the heavy calcium carbonate is 200-380 mesh, and more preferably, the particle size of the heavy calcium carbonate is 280 mesh.
According to the invention, preferably, the water reducing agent is at least one of a sodium lignosulfonate water reducing agent, a naphthalene water reducing agent, an aliphatic water reducing agent, an amino water reducing agent and a polycarboxylic acid water reducing agent.
According to the present invention, preferably, the emulsion is an ethylene-vinyl acetate copolymer emulsion and/or an acrylic acid emulsion, further preferably, the emulsion is an ethylene-vinyl acetate copolymer emulsion having a glass transition temperature of-5 ℃, and further preferably, a 1356 emulsion of selanias.
According to the present invention, preferably, the bactericide is an isothiazolinone derivative, and more preferably a mixture of CMIT/MIT ═ 1/1.
According to the present invention, preferably, the defoaming agent is at least one of a mineral oil-based defoaming agent, a silicone-based defoaming agent, and a polyether-based defoaming agent.
The coating principle of the invention is mainly as follows: the nano titanium dioxide is easy to form an electron cavity band on the surface under the condition of natural light, and surface hydroxyl is formed after water molecules are adsorbed. Under the alkaline condition, calcium ions and magnesium ions in the glass beads form calcium hydroxide and magnesium hydroxide, so that the glass beads can coat the surface of titanium dioxide to form a nano titanium dioxide modified layer. The coating principle of the invention belongs to the modification of the chemical bond mechanism on the surface of the nano titanium dioxide.
The technical scheme of the invention has the following beneficial effects:
the coating modified nano titanium dioxide compound enables the formed waterproof coating to reach the roof waterproof grade I index, improves the ultraviolet resistance and the heat insulation capability of the waterproof coating, enables the waterproof coating to have a hydrophobic effect, finally achieves the weather-proof and waterproof characteristics, has a long service life, and meets the standard of GB/T23445-.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Example 1
The embodiment provides a waterproof coating, which comprises a powder material and a liquid material;
the powder material comprises: coating a modified nano titanium dioxide compound, No. 42.5 ordinary portland cement, 280-mesh heavy calcium carbonate and a polycarboxylic acid water reducing agent;
the liquid material comprises: ceraniss' 1356 emulsion, water, biocide (CMIT/MIT-1/1 mixture) and silicone based antifoam;
the coated modified nano titanium dioxide compound is prepared by coating the surface of nano titanium dioxide by glass beads. Specifically, the preparation method of the coated modified nano titanium dioxide compound comprises the following steps: firstly, adding nano titanium dioxide into water for dissolving, then adding a pH regulator (the pH regulator is a mixture with the content of 2-amino-2-methyl-1-propanol being 95% and the content of water being 5% based on the total weight of the pH regulator) to ensure that the pH of a system is within the range of 9-11, and adding an anionic wetting agent after uniformly stirring to obtain a mixed solution; dispersing the glass microspheres with the particle size of 80 mu M and the mixed solution for 20min at 80 ℃ by a stirrer at 1000r/min, filtering and drying at 60 ℃ to obtain the coated modified nano titanium dioxide compound.
The raw material composition ratios of the above-mentioned powdery material and liquid material are shown in the following Table 1.
TABLE 1
The preparation method of the waterproof coating comprises the following steps:
s1: uniformly mixing and stirring the coated modified nano titanium dioxide compound, No. 42.5 ordinary portland cement, 280-mesh heavy calcium carbonate and a polycarboxylic acid water reducing agent to obtain powder;
s2: mixing and stirring the ceraniss 1356 emulsion, water, a bactericide (a mixture of CMIT/MIT (1/1)) and a silicone defoaming agent uniformly to obtain a liquid material;
s3: and mixing the powder material and the liquid material according to the following ratio: liquid 1.2: mixing the components in a ratio of 1 to obtain the waterproof coating.
Example 2
The present embodiment provides a waterproof coating material, and the present embodiment is different from embodiment 1 only in that: the raw material composition proportion of the powder and the liquid is different. The raw material composition ratios of the powder and liquid materials of this example are shown in Table 2.
TABLE 2
Example 3
The present embodiment provides a waterproof coating material, and the present embodiment is different from embodiment 1 only in that: the raw material composition proportion of the powder and the liquid is different. The raw material composition ratios of the powder and liquid materials of this example are shown in Table 3.
TABLE 3
Test example
The waterproof coatings described in the above examples 1-3 were subjected to the performance tests of untreated elongation at break, untreated bond strength, untreated tensile bond strength, artificial weathering elongation at break, and ultraviolet ray treatment elongation at break, according to the standard requirements of GB/T23445-. The results are shown in Table 4 below.
TABLE 4
As can be seen from Table 4, the mechanical property data of the waterproof coatings prepared in examples 1-3 are far higher than the standard requirements, and meet the standard requirements of GB/T23445-2009 II, and the elongation at break performance of artificial aging and ultraviolet treatment is greatly superior to that of the prior art product (Keshun KS988A type II). In conclusion, the mechanical properties and the aging resistance of example 2 are the best among examples 1 to 3.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. The coated modified nano titanium dioxide compound is characterized in that the compound is prepared by coating the surface of nano titanium dioxide with glass beads.
2. The coated modified nano-titania composite of claim 1, wherein the weight ratio of glass beads to nano-titania is (1-3): (10-20).
3. The coated modified nano-titania composite of claim 1, wherein,
the particle size of the glass beads is 10-135 μ M, and preferably the glass beads are 3M glass beads obtained by pination;
the particle size of the nano titanium dioxide is 60-120 nm.
4. The method for preparing the coated modified nano titanium dioxide composite according to any one of claims 1 to 3, comprising:
uniformly stirring and mixing the nano titanium dioxide, water, a pH regulator and a wetting agent to obtain a mixed solution; and (3) uniformly stirring and mixing the glass beads and the mixed solution, and filtering and drying to obtain the coated modified nano titanium dioxide compound.
5. The method for preparing a coated modified nano titanium dioxide composite according to claim 4,
the pH regulator is an organic amine compound containing hydroxyl; adding the pH regulator to ensure that the pH of the mixed solution is 9-11;
the wetting agent is an anionic wetting agent; the dosage ratio of the wetting agent to the nano titanium dioxide is (5-10): (100- > 200);
the dosage ratio of the water to the nano titanium dioxide is (200-) -400): (100-200).
6. The method for preparing a coated modified nano titanium dioxide composite according to claim 4,
uniformly stirring and mixing the glass beads and the mixed solution at a temperature of 75-85 ℃;
uniformly stirring and mixing the glass beads and the mixed solution at the stirring speed of 900-1200r/min for 15-25 min;
the temperature of the drying treatment is 55-65 ℃.
7. Use of the coated modified nano titanium dioxide composite according to any one of claims 1 to 3 as a constituent of a waterproof coating material.
8. The waterproof coating is characterized by comprising powder and liquid;
the powder material comprises: coating the modified nano titanium dioxide compound, the ash cement, the heavy calcium carbonate and the water reducing agent;
the liquid material comprises: emulsions, water, biocides and defoamers;
the coated modified nano titanium dioxide compound is the coated modified nano titanium dioxide compound in any one of claims 1 to 3.
9. The waterproof coating material according to claim 8,
the powder comprises the following components in parts by weight: coating modified nano titanium dioxide compound 100-200 parts, ash cement 200-300 parts, heavy calcium carbonate 500-600 parts and water reducing agent 2-6 parts;
the liquid material comprises the following components in parts by weight: 850 parts of emulsion 750-;
the dosage ratio of the powder material to the liquid material is (1-1.2): (0.8-1).
10. The waterproof coating material according to claim 8 or 9,
the ash cement is ordinary portland cement and/or sulpho-alumina cement;
the particle size of the heavy calcium carbonate is 200-380 meshes;
the water reducing agent is at least one of sodium lignosulfonate water reducing agent, naphthalene water reducing agent, aliphatic water reducing agent, amino water reducing agent and polycarboxylic acid water reducing agent;
the emulsion is ethylene-vinyl acetate copolymer emulsion and/or acrylic emulsion;
the bactericide is an isothiazolinone derivative;
the defoaming agent is at least one of a mineral oil defoaming agent, a silicone defoaming agent and a polyether defoaming agent.
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| CN202210263616.2A CN114806259A (en) | 2022-03-17 | 2022-03-17 | Coated modified nano titanium dioxide compound, preparation method and application thereof, and waterproof coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116836455A (en) * | 2023-08-08 | 2023-10-03 | 北京东方雨虹防水技术股份有限公司 | Multi-interface composite filler, application thereof, TPO waterproof coiled material and preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190185677A1 (en) * | 2016-08-19 | 2019-06-20 | Agency For Science, Technology And Research | A Method for Forming a Titania-Coated Inorganic Particle |
| CN113817363A (en) * | 2021-09-16 | 2021-12-21 | 河南三棵树新材料科技有限公司 | Low-density polymer cement waterproof coating and preparation method thereof |
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