CN110759668A - Anti-cracking self-cleaning stone-like paint and preparation method thereof - Google Patents
Anti-cracking self-cleaning stone-like paint and preparation method thereof Download PDFInfo
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- 239000003973 paint Substances 0.000 title claims abstract description 38
- 238000005336 cracking Methods 0.000 title claims abstract description 15
- 238000004140 cleaning Methods 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229960000892 attapulgite Drugs 0.000 claims abstract description 18
- 229910052625 palygorskite Inorganic materials 0.000 claims abstract description 18
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000839 emulsion Substances 0.000 claims abstract description 11
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 8
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 8
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 8
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 8
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 7
- 239000002270 dispersing agent Substances 0.000 claims abstract description 7
- 229920000642 polymer Polymers 0.000 claims abstract description 6
- 239000002562 thickening agent Substances 0.000 claims abstract description 6
- 239000000080 wetting agent Substances 0.000 claims abstract description 6
- 239000000654 additive Substances 0.000 claims abstract description 3
- 230000000996 additive effect Effects 0.000 claims abstract description 3
- 239000004575 stone Substances 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 229920001661 Chitosan Polymers 0.000 claims description 11
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 claims description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 8
- KRFJLUBVMFXRPN-UHFFFAOYSA-N cuprous oxide Chemical compound [O-2].[Cu+].[Cu+] KRFJLUBVMFXRPN-UHFFFAOYSA-N 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 7
- 239000006004 Quartz sand Substances 0.000 claims description 6
- 239000012752 auxiliary agent Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 6
- 238000012986 modification Methods 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 6
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 4
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 3
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 3
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 3
- 239000005642 Oleic acid Substances 0.000 claims description 3
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 3
- 238000011068 loading method Methods 0.000 claims description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 3
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 239000004354 Hydroxyethyl cellulose Substances 0.000 abstract description 3
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 abstract description 3
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000003860 storage Methods 0.000 abstract description 3
- 238000013033 photocatalytic degradation reaction Methods 0.000 abstract description 2
- 230000001954 sterilising effect Effects 0.000 abstract description 2
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 2
- ZHPNWZCWUUJAJC-UHFFFAOYSA-N fluorosilicon Chemical compound [Si]F ZHPNWZCWUUJAJC-UHFFFAOYSA-N 0.000 abstract 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 12
- 239000004576 sand Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 239000012621 metal-organic framework Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 230000000844 anti-bacterial effect Effects 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 239000013178 MIL-101(Cr) Substances 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- -1 dodecyl alcohol ester Chemical class 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003075 superhydrophobic effect Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/001—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing unburned clay
-
- 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
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
- C04B2111/00155—Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite
-
- 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
-
- 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
- C04B2111/2038—Resistance against physical degradation
-
- 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
- C04B2111/2038—Resistance against physical degradation
- C04B2111/2069—Self-cleaning materials, e.g. using lotus effect
-
- 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
- C04B2111/2092—Resistance against biological degradation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/80—Optical properties, e.g. transparency or reflexibility
- C04B2111/82—Coloured materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to an anti-cracking self-cleaning stone-like paint, which comprises the following components: 15-25% of silicone-acrylic emulsion, 55-60% of modified quartz sand, 5-10% of modified attapulgite, Gd-MOF-TiO22-3%, oil-soluble carbon quantum dots 1-1.5%, nano-alumina 1-2%, fluorine silicon polymer/nano-Cu2O/nano SiO22 to 3 percent of water, 0.01 to 0.1 percent of wetting agent, 0.01 to 0.5 percent of dispersant, 0.01 to 0.05 percent of defoaming agent, 0.05 to 0.5 percent of film-forming additive, 0.1 to 0.3 percent of thickening agent and the balance of water. The invention modifies the attapulgite to ensure the anti-cracking performance and the water resistance of the stone-like paint coatingAnd the consistency of color is maintained without blooming. The modified attapulgite is added, and the components are modified simultaneously, so that the use of hydroxyethyl cellulose is effectively avoided, the obtained stone-like paint still has good viscosity and rheological property, strong stability, difficult layering phenomenon in the storage process, easy construction, small film forming shrinkage, no flowing and dropping, good water resistance, good wear resistance, high temperature resistance and sterilization performance, and good effect of photocatalytic degradation of nitrogen oxide.
Description
Technical Field
The invention relates to the technical field of building coatings, in particular to an anti-cracking self-cleaning stone-like paint and a preparation method thereof.
Background
The stone paint is a high-quality and high-performance building coating which is prepared by taking one or more synthetic resin emulsions as a base material, adding a small amount of film-forming auxiliary agent as a bonding material, taking natural colored sand or artificial sand with different grades as aggregate, quantitatively adding a series of auxiliary agents such as a dispersing agent, a defoaming agent, a bactericide, a multifunctional auxiliary agent, a synergist and the like, and adding a quantitative deionized water. Because the coating has strong stereoscopic impression, bright color and elegant spraying effect, the coating can embody the rich texture of natural stone and is widely used in inner and outer wall decoration.
However, the viscosity and rheological properties of the current stone paint products are adjusted by cellulose such as hydroxyethyl cellulose. However, the cellulose has poor water resistance and is easy to mildew, so that the real stone paint film turns white when meeting water, and the real stone paint is easy to mildew and deteriorate when being stored; and the cellulose stone paint is used, a paint film slowly shrinks in the drying process, the paint film becomes thin, small sand grains, emulsion and the like are close to the bottom layer, large sand grains slowly protrude out of the surface, and the decorated wall surface is colored due to the color difference of the large sand grains and the small sand grains.
Moreover, the general commercial stone-like paint is easy to crack and fall off due to construction factors, raw material factors, climate and pollution factors, so that the decoration effect is lost, the protection effect is greatly reduced, the service life of the stone-like paint is influenced, and the appearance and the quality of the stone-like paint are difficult to be unified by locally coating the stone-like paint at the later stage, so that the attractiveness is influenced.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide an anti-cracking self-cleaning stone-like paint.
An anti-cracking self-cleaning real stone paint comprises the following components in percentage by weight:
15-25% of silicone-acrylate emulsion
55 to 60 percent of modified quartz sand
5 to 10 percent of modified attapulgite
Gd-MOF-TiO22-3％
1 to 1.5 percent of oil-soluble carbon quantum dots
1 to 2 percent of nano aluminum oxide
Fluorosilicone polymer/nano Cu2O/nano SiO22-3％
0.01 to 0.1 percent of wetting agent
0.01 to 0.5 percent of dispersant
0.01 to 0.05 percent of defoaming agent
0.05 to 0.5 percent of film-forming additive
0.1 to 0.3 percent of thickening agent
The balance of water.
The carboxymethyl chitosan has good adsorbability, film-forming property, permeability, fiber forming property, hygroscopicity and moisture retention property, can inhibit the growth of bacteria, fungi and viruses, and has good adhesiveness and bacteriostasis; the method is widely applied in the fields of medicine, chemical industry, food and the like. The quartz sand surface soaked in the carboxymethyl chitosan solution can be combined into a layer of uniform and compact film, the color of the natural sand is not changed, the surface of the quartz sand has antibacterial property and adhesiveness, the binding force between the natural sand and the silicone-acrylate emulsion is enhanced, the stability of the stone-like paint is enhanced, and the phenomenon of layering is not easy to occur in the storage process.
The attapulgite is a fibrous silicate clay mineral, has light texture, high viscosity, suspension property and plasticity of colloid, small drying shrinkage rate and no cracking, and is favorable for the construction of real stone paint. The thixotropy, the viscosity and the suspension property of the modified attapulgite colloid are further improved, which is directly reflected by the increase of the anti-cracking performance and the water resistance of the real stone paint coating, and the consistency of the color is kept without generating the flower.
Nano Cu2O and nano SiO2The two components form a lotus leaf effect together under the synergistic effect, a super-hydrophobic surface can be formed better, and simultaneously Cu2O has bactericidal effect. Nano SiO2The addition of the modified polyurethane resin into the stone-like paint can improve the hardness, scratch resistance and weather resistance of the stone-like paint.
The nano alumina can improve the wear resistance and high-temperature performance of the stone-like paint.
Gd-MOF-TiO2Gd and TiO2The catalyst is introduced into an MOF (metal organic framework), so that the catalyst has good dispersibility and stability, and the photocatalytic performance is greatly improved. Preferably, Gd-MOF-TiO2The MOF can be MIL-101(Cr), and the particle size of Gd is less than 5 nm. Gd can improve TiO2The decomposition rate of toxic gases such as formaldehyde and the like.
Due to Gd-TiO2The energy level of the carbon quantum dots is matched when the carbon quantum dots of the narrow band gap are aligned with TiO2After sensitization, the TiO content can be improved2The carbon quantum dots can effectively promote the transfer of electrons and inhibit the recombination of photo-generated electron-hole pairs due to the good conductivity of the carbon quantum dots. Under the illumination condition, electrons generated by light can be rapidly transferred from CB of the carbon quantum dot to TiO2The CB of (1); at the same time, in TiO2The holes in the valence band are transferred to the valence band of the carbon quantum dots. Compared with TiO2In other words, it not only has obvious absorption in the ultraviolet region, but also has improved absorption in the visible region.
Preferably, said Gd-MOF-TiO2Medium TiO 22The mass fraction of the Gd is 5-10 percent, and the loading amount of the Gd is 0.01-0.1 percent.
Preferably, said Gd-MOF-TiO2The preparation mainly comprises the following steps: raw materials and TiO for preparing MOF2Dispersing the solution in a sodium hydroxide solution, reacting for 3-5h under the hydrothermal condition of 120-180 ℃, fully washing with ethanol, and drying in vacuum; then GdCl is added3Solution, stirring thoroughly 2-3h; filtering, washing with water and then washing with ethanol; and (3) dispersing the solid obtained in the step into water again, dropwise adding a reducing agent at 0-5 ℃, continuously stirring for 4-5h, filtering and drying.
Preferably, the modification of the modified quartz sand mainly comprises the following steps: dissolving carboxymethyl chitosan in deionized water to prepare a carboxymethyl chitosan solution, and soaking quartz sand in the carboxymethyl chitosan solution for 12-24 h.
Preferably, the modification of the modified attapulgite mainly comprises the following steps: soaking attapulgite in deionized water for 8-10 hours; maleic anhydride and oleic acid were then added.
Preferably, 0.05-0.1% of dodecanol is also included.
The dodecyl alcohol ester can promote the acrylic emulsion to be solidified at a lower temperature, so that the best performance is achieved.
The preparation method of the anti-cracking self-cleaning stone-like paint mainly comprises the following steps:
(1) weighing the components according to the proportion;
(2) sequentially adding water, silicone-acrylic emulsion, wetting agent, dispersing agent, defoaming agent and film-forming auxiliary agent, stirring and mixing for 10-20 min;
(3) then adding modified quartz sand, modified attapulgite and Gd-MOF-TiO2Nano alumina, fluorosilicone polymer/nano Cu2O/nano SiO2Stirring and mixing the oil-soluble carbon quantum dots for 20-30 min;
(4) adding thickener, and packaging.
Compared with the prior art, the invention improves the anti-cracking performance and the water resistance of the stone-like paint coating by modifying the attapulgite, keeps the consistency of the color and does not generate the color. The modified attapulgite is added, and the components are modified simultaneously, so that the use of hydroxyethyl cellulose is effectively avoided, the obtained stone-like paint still has good viscosity and rheological property, strong stability, difficult layering phenomenon in the storage process, easy construction, small film forming shrinkage, no flowing and dropping, good water resistance, good wear resistance, high temperature resistance and sterilization performance, and good effect of photocatalytic degradation of nitrogen oxide.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below.
Examples 1 to 8
The components and contents of the stone-like paints of examples 1 to 8 are shown in Table 1.
Wherein Gd-MOF-TiO2Medium TiO 22The mass fraction of the Gd is 5-10 percent, and the loading amount of the Gd is 0.01-0.1 percent.
Gd-MOF-TiO2The preparation mainly comprises the following steps: raw materials and TiO for preparing MOF2Dispersing the solution in a sodium hydroxide solution, reacting for 3-5h under the hydrothermal condition of 120-180 ℃, fully washing with ethanol, and drying in vacuum; then GdCl is added3Fully stirring the solution for 2-3 h; filtering, washing with water and then washing with ethanol; and (3) dispersing the solid obtained in the step into water again, dropwise adding a reducing agent at 0-5 ℃, continuously stirring for 4-5h, filtering and drying.
The modification of the modified quartz sand mainly comprises the following steps: dissolving carboxymethyl chitosan in deionized water to prepare a carboxymethyl chitosan solution, and soaking quartz sand in the carboxymethyl chitosan solution for 12-24 h.
The modification of the modified attapulgite mainly comprises the following steps: soaking attapulgite in deionized water for 8-10 hours; maleic anhydride and oleic acid were then added.
The preparation method of the stone-like paint mainly comprises the following steps:
(1) weighing the components according to the proportion;
(2) sequentially adding water, silicone-acrylic emulsion, wetting agent, dispersing agent, defoaming agent and film-forming auxiliary agent, stirring and mixing for 10-20 min;
(3) adding modificationSex quartz sand, modified attapulgite, Gd-MOF-TiO2Nano alumina, fluorosilicone polymer/nano Cu2O/nano SiO2Stirring and mixing the oil-soluble carbon quantum dots for 20-30 min;
(4) adding thickener, and packaging.
1. The performance-related tests and comparison of results for examples 1-3 are shown in Table 2.
TABLE 2 comparison of Performance related measurements for examples 1-3
Wherein, the stain resistance detection standard is as follows: JGT24-2000 synthetic resin emulsion sand wall building coating W type requires less than or equal to 2 grade after 5 times of cycle test.
Testing the formaldehyde degradation rate: the real stone paint is coated inside a closed container, two sides of the container are transparent, the container is placed under natural light for illumination for 8 hours after formaldehyde is fully absorbed, and the formaldehyde degradation rate is measured.
2. The performance-related tests and comparison of results for examples 4-9 are shown in Table 3.
TABLE 3 comparison of Performance related assays for examples 4-9
Claims (7)
1. The anti-cracking self-cleaning real stone paint is characterized by comprising the following components in percentage by weight:
15-25% of silicone-acrylate emulsion
55 to 60 percent of modified quartz sand
5 to 10 percent of modified attapulgite
Gd-MOF-TiO22-3％
1 to 1.5 percent of oil-soluble carbon quantum dots
1 to 2 percent of nano aluminum oxide
Fluorosilicone polymer/nano Cu2O/nano SiO22-3％
0.01 to 0.1 percent of wetting agent
0.01 to 0.5 percent of dispersant
0.01 to 0.05 percent of defoaming agent
0.05 to 0.5 percent of film-forming additive
0.1 to 0.3 percent of thickening agent
The balance of water.
2. Anti-cracking self-cleaning stone-like paint according to claim 1, characterized in that the Gd-MOF-TiO2Medium TiO 22The mass fraction of the Gd is 5-10 percent, and the loading amount of the Gd is 0.01-0.1 percent.
3. Anti-cracking self-cleaning stone-like paint according to claim 2, characterized in that the Gd-MOF-TiO2The preparation mainly comprises the following steps: raw materials and TiO for preparing MOF2Dispersing the solution in a sodium hydroxide solution, reacting for 3-5h under the hydrothermal condition of 120-180 ℃, fully washing with ethanol, and drying in vacuum; then GdCl is added3Fully stirring the solution for 2-3 h; filtering, washing with water and then washing with ethanol; and (3) dispersing the solid obtained in the step into water again, dropwise adding a reducing agent at 0-5 ℃, continuously stirring for 4-5h, filtering and drying.
4. The anti-cracking self-cleaning real stone paint as claimed in claim 1, wherein the modification of the modified quartz sand mainly comprises: dissolving carboxymethyl chitosan in deionized water to prepare a carboxymethyl chitosan solution, and soaking quartz sand in the carboxymethyl chitosan solution for 12-24 h.
5. The crack-resistant self-cleaning real stone paint as claimed in claim 1, wherein the modification of the modified attapulgite clay mainly comprises: soaking attapulgite in deionized water for 8-10 hours; maleic anhydride and oleic acid were then added.
6. The crack-resistant self-cleaning real stone paint as claimed in claim 1, further comprising 0.05-0.1% of dodecanol.
7. The preparation method of the crack-resistant self-cleaning real stone paint as claimed in claim 1, which is characterized by mainly comprising the following steps:
(1) weighing the components according to the proportion;
(2) sequentially adding water, silicone-acrylic emulsion, wetting agent, dispersing agent, defoaming agent and film-forming auxiliary agent, stirring and mixing for 10-20 min;
(3) then adding modified quartz sand, modified attapulgite and Gd-MOF-TiO2Nano alumina, fluorosilicone polymer/nano Cu2O/nano SiO2Stirring and mixing the oil-soluble carbon quantum dots for 20-30 min;
(4) adding thickener, and packaging.
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