CN112280403B - Building exterior wall stone-like paint and preparation method thereof - Google Patents
Building exterior wall stone-like paint and preparation method thereof Download PDFInfo
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- CN112280403B CN112280403B CN202011231187.8A CN202011231187A CN112280403B CN 112280403 B CN112280403 B CN 112280403B CN 202011231187 A CN202011231187 A CN 202011231187A CN 112280403 B CN112280403 B CN 112280403B
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- 239000003973 paint Substances 0.000 title claims abstract description 101
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000002318 adhesion promoter Substances 0.000 claims abstract description 49
- 238000003756 stirring Methods 0.000 claims abstract description 37
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000004575 stone Substances 0.000 claims abstract description 35
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000002002 slurry Substances 0.000 claims abstract description 24
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 23
- 239000000049 pigment Substances 0.000 claims abstract description 23
- 239000000839 emulsion Substances 0.000 claims abstract description 18
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 14
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 12
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 12
- 239000001913 cellulose Substances 0.000 claims abstract description 12
- 229920002678 cellulose Polymers 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 51
- 239000002245 particle Substances 0.000 claims description 49
- 239000000919 ceramic Substances 0.000 claims description 46
- 239000004576 sand Substances 0.000 claims description 35
- 229920002635 polyurethane Polymers 0.000 claims description 30
- 239000004814 polyurethane Substances 0.000 claims description 30
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 13
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 239000006185 dispersion Substances 0.000 claims description 9
- ZTHYODDOHIVTJV-UHFFFAOYSA-N Propyl gallate Chemical compound CCCOC(=O)C1=CC(O)=C(O)C(O)=C1 ZTHYODDOHIVTJV-UHFFFAOYSA-N 0.000 claims description 8
- 239000004927 clay Substances 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 7
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 7
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 7
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 7
- 238000000498 ball milling Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 235000010388 propyl gallate Nutrition 0.000 claims description 4
- 239000000473 propyl gallate Substances 0.000 claims description 4
- 229940075579 propyl gallate Drugs 0.000 claims description 4
- SPSPIUSUWPLVKD-UHFFFAOYSA-N 2,3-dibutyl-6-methylphenol Chemical compound CCCCC1=CC=C(C)C(O)=C1CCCC SPSPIUSUWPLVKD-UHFFFAOYSA-N 0.000 claims description 3
- ZBCATMYQYDCTIZ-UHFFFAOYSA-N 4-methylcatechol Chemical compound CC1=CC=C(O)C(O)=C1 ZBCATMYQYDCTIZ-UHFFFAOYSA-N 0.000 claims description 3
- CZBZUDVBLSSABA-UHFFFAOYSA-N butylated hydroxyanisole Chemical compound COC1=CC=C(O)C(C(C)(C)C)=C1.COC1=CC=C(O)C=C1C(C)(C)C CZBZUDVBLSSABA-UHFFFAOYSA-N 0.000 claims description 3
- 235000010354 butylated hydroxytoluene Nutrition 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 abstract description 8
- 238000000576 coating method Methods 0.000 abstract description 4
- 239000002270 dispersing agent Substances 0.000 abstract description 4
- 239000012752 auxiliary agent Substances 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 15
- 238000011109 contamination Methods 0.000 description 9
- 239000000428 dust Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 230000032683 aging Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000002966 varnish Substances 0.000 description 8
- 239000010881 fly ash Substances 0.000 description 7
- 229910052500 inorganic mineral Inorganic materials 0.000 description 7
- 239000011707 mineral Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
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- 238000001035 drying Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- IBLKWZIFZMJLFL-UHFFFAOYSA-N 1-phenoxypropan-2-ol Chemical compound CC(O)COC1=CC=CC=C1 IBLKWZIFZMJLFL-UHFFFAOYSA-N 0.000 description 2
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- -1 benzyl alcohol, dodecyl alcohol ester Chemical class 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- LQZZUXJYWNFBMV-UHFFFAOYSA-N ethyl butylhexanol Natural products CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000003674 animal food additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
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- 230000002708 enhancing effect Effects 0.000 description 1
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- 239000010438 granite Substances 0.000 description 1
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- 239000000543 intermediate Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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- 239000011819 refractory material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
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- 238000010998 test method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000005303 weighing Methods 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
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1606—Antifouling paints; Underwater paints characterised by the anti-fouling agent
- C09D5/1612—Non-macromolecular compounds
- C09D5/1618—Non-macromolecular compounds inorganic
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
-
- 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
- C09D7/80—Processes for incorporating ingredients
-
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of chemical coatings, in particular to a building exterior wall stone-like paint and a preparation method thereof. A building exterior wall stone-like paint comprises acrylic emulsion, bone pigment, cellulose, ethylene glycol, water, titanium dioxide, an adhesion promoter, a film forming auxiliary agent, a leveling agent and an antioxidant; the preparation method comprises the following steps: stirring and mixing water, cellulose, glycol and a dispersing agent, adding an acrylic emulsion, titanium dioxide, a film-forming assistant, a flatting agent, an antioxidant and the dispersing agent, stirring and mixing uniformly to obtain a basic slurry, and finally mixing the basic slurry, a bone pigment and an adhesion promoter uniformly to obtain the really stone paint. The stone-like paint for the outer wall of the building can be used as a decorative paint for the outer wall of the building, and has the advantage of stain resistance.
Description
Technical Field
The invention relates to the technical field of chemical coatings, in particular to a building exterior wall stone-like paint and a preparation method thereof.
Background
In recent years, the decoration effect of the stone-like paint is exactly similar to the effects of marble, granite and the like, and the building decorated by the stone-like paint has natural and real natural gloss and gives people elegant, solemn and harmonious aesthetic feeling, so the stone-like paint is popular in the decoration application of the outer wall of the building.
In the related technology, the stone-like paint is a paint with decorative effect, which is mainly prepared by taking resin emulsion as a film-forming substance, taking sand grains as aggregate and matching with various auxiliary agents. Along with the increase of the service time and under the condition that the real stone paint coated on the building outer wall is subjected to the irradiation of the sun and the erosion of wind and rain for a long time, the bonding strength of the real stone paint is damaged, so that the phenomenon that the sand falls off easily occurs on the surface of the real stone paint. The original surface microstructure of the real stone paint is in a state of unevenness and untight paint film, and the condition of sand falling is also added, so that solid particles such as dust and the like are easy to accumulate on the surface, and the problem of contamination is caused.
Disclosure of Invention
Aiming at the defects in the prior art, the first object of the invention is to provide a stone-like paint for building exterior walls, which has the advantage of stain resistance.
The second purpose of the invention is to provide a preparation method of the stone-like paint for the exterior wall of the building, which can prepare the stone-like paint with the advantage of stain resistance.
In order to achieve the first object, the invention provides the following technical scheme: the building exterior wall stone-like paint is mainly prepared from the following components in parts by weight:
18-35 parts of acrylic emulsion;
65-80 parts of bone pigment;
0.5-2 parts of cellulose;
0.5-3 parts of ethylene glycol;
12-20 parts of water;
5-10 parts of titanium dioxide;
15-30 parts of an adhesion promoter;
2-8 parts of a film-forming assistant;
0.3-1 part of a leveling agent;
0.5-1 part of antioxidant;
wherein the bonding accelerator is ceramic particle modified composite polyurethane.
Through adopting above-mentioned technical scheme, to real mineral varnish because fall sand easily and lead to real mineral varnish surface to pile up the dust and cause the problem of easily staiing under long-term the use, this application is from falling the source of sand and falling the processing of sand back amasss dust and solving. From the source of falling sand, this application has added adhesion promoter in real stone paint's formula, has utilized adhesion promoter polyurethane wherein to have good stickness, stability and water-retaining property, can improve bond strength between emulsion and the aggregate, can also slow down the dry phenomenon of the quick dehydration of real stone paint, and then can make the whole pliability of real stone paint good, the difficult phenomenon that the sand falls of drying crack. The ceramic particles have excellent performances in the aspects of hardness, fracture toughness and low-temperature ductility, so that the strength, toughness and fatigue resistance of the whole stone-like paint can be improved. Meanwhile, the ceramic particle modified composite polyurethane is used as a bonding promoter, so that the smoothness of the surface of the real stone paint can be improved, the concave-convex structure and the pores of the surface of the real stone paint are reduced, the difficulty of sand falling of the surface of the real stone paint is enhanced, and the contamination resistance of the real stone paint is improved.
From falling sand back deposition dirt's processing, this application has added titanium dioxide in real mineral varnish's formula, and titanium dioxide can decompose the oxidation with dust and the dirty material that adsorb on real mineral varnish surface under the effect of sunlight to make real mineral varnish have the performance of automatically cleaning, and then can realize self-cleaning function behind dust or the dirty material on real mineral varnish surface area, guaranteed real mineral varnish's resistant stain performance.
Further, the adhesion promoter comprises the following preparation steps:
the method comprises the following steps: soaking 5-10 parts of ceramic particles in 1-2 parts of isopropanol and 0.1-0.8 part of polyvinylpyrrolidone, performing ball milling dispersion for 1-2 hours at the rotating speed of 1500-3000 r/min, standing and filtering to obtain pretreated ceramic particles;
step two: and (2) adding 3-8 parts of silane coupling agent into 8-25 parts of polyurethane, slowly dropwise adding 0.5 part of acetic acid solution while stirring, adding the pretreated ceramic particles prepared in the step one, and continuously stirring for 3-5 hours to obtain the bonding accelerator.
By adopting the technical scheme, the ceramic particles are wetted before being compounded with the polyurethane, so that the compound dispersion degree of the ceramic particles in the polyurethane can be improved.
Further, in the second step, the pretreated ceramic particles prepared in the first step are averagely divided into 3 to 6 parts, and each part of the pretreated ceramic particles are added at intervals of half an hour.
By adopting the technical scheme, the pretreated ceramic particles are averagely divided into 3-6 parts and added into the polyurethane at intervals, so that the ceramic particles can be more uniformly dispersed in a system, the surface of the ceramic particles can be fully contacted with the polyurethane, and the composite dispersion degree of the ceramic particles in the polyurethane is further improved.
Further, in the second step, the stirring speed is 500-800 r/min.
By adopting the technical scheme, the stirring speed is adjusted to be 800r/min in the second step, so that the polyurethane and the ceramic particles can be fully stirred, and the contact effect between the polyurethane and the ceramic particles cannot be influenced due to the excessively high stirring speed.
Further, the bone pigment comprises 20-30 parts of high-purity silica sand, 40-50 parts of sintered color sand and 5-10 parts of natural clay.
By adopting the technical scheme, the high-purity silica sand has higher strength and wear resistance, the sintered type color sand has certain acid-base resistance, water resistance and frost resistance, and the natural clay has certain adsorption performance, and the natural clay is mixed with the high-purity silica sand and the sintered type color sand together, so that the loosening degree of the high-purity silica sand and the sintered type color sand can be reduced, and the bonding strength of the real stone paint is further improved.
Further, the feed additive is mainly prepared from the following components in parts by weight:
20-25 parts of acrylic emulsion;
70-75 parts of bone pigment;
1-1.5 parts of cellulose;
1.5-2 parts of ethylene glycol;
15-18 parts of water;
5-8 parts of titanium dioxide;
20-25 parts of an adhesion promoter.
By adopting the technical scheme, experiments show that the stone-like paint prepared by adopting the dosage proportion has better bonding strength, and is not easy to fall off when exposed to the outside environment.
Further, the film forming assistant is one of benzyl alcohol, dodecyl alcohol ester, ethylene glycol butyl ether and propylene glycol phenyl ether.
By adopting the technical scheme, any one of benzyl alcohol, dodecyl alcohol ester, ethylene glycol butyl ether and propylene glycol phenyl ether is adopted as a film forming auxiliary agent, so that the stability and the weather resistance of the real stone paint can be improved.
Further, the antioxidant is any one of 4-methylcatechol, propyl gallate, butylhydroxyanisole and dibutylhydroxytoluene.
By adopting the technical scheme, the 4-methyl catechol, the propyl gallate, the butyl hydroxy anisole and the dibutyl hydroxy toluene can prevent ultraviolet rays from penetrating through a paint film, resist the damage of ultraviolet radiation to the paint film, enhance the chemical stability and the weather resistance of the real stone paint and solve the problem of sand falling caused by oxidation and aging of the real stone paint.
In order to achieve the second object, the invention provides the following technical scheme: a preparation method of a stone-like paint for an exterior wall of a building comprises the following steps:
the method comprises the following steps: adding water, cellulose and glycol at the rotation speed of 400-700r/min, and stirring for 10-30min to obtain a mixture A;
step two: adding acrylic emulsion, titanium dioxide, a film-forming assistant, a leveling agent and an antioxidant into the mixture A, dividing the adhesion promoter into A parts of adhesion promoter and B parts of adhesion promoter, adding the A parts of adhesion promoter, and stirring and mixing uniformly to obtain base slurry;
step three: and uniformly mixing the basic slurry, the bone pigment and the B part of the bonding accelerator to obtain the really stone paint.
By adopting the technical scheme, the base slurry of the stone-like paint is firstly prepared, and then the base slurry and the bone pigment are mixed to obtain the stone-like paint, wherein the adhesion promoter is added by dividing the two parts step by step, so that the adhesion strength of the base slurry can be improved when the base slurry is prepared, and the adhesion strength between the base slurry and the bone pigment is further improved when the base slurry and the bone pigment are mixed subsequently.
Further, the adhesion promoter is divided into A parts of adhesion promoter and B parts of adhesion promoter according to the mass part ratio of 2: 1.
By adopting the technical scheme, the bonding accelerator added in the step of preparing the basic slurry is twice that added in the step of mixing the basic slurry and the bone pigment, so that the stone-like paint with strong bonding strength can be prepared.
Further, the stirring speed in the second step is 700 and 750 r/min.
By adopting the technical scheme, the stirring speed is adjusted to 700-750r/min in the step two, so that the physical action among the materials is not damaged due to the excessively high stirring speed while the materials are fully stirred.
In conclusion, the invention has the following beneficial effects:
firstly, the bonding accelerator is added in the formula of the stone-like paint, polyurethane in the bonding accelerator is utilized to slow down the phenomenon of rapid dehydration and drying of the stone-like paint, ceramic particles are utilized to improve the overall strength, toughness and fatigue resistance of the stone-like paint, and meanwhile, the ceramic particle modified composite polyurethane is used as the bonding accelerator, so that the smoothness of the surface of the stone-like paint can be improved, the concave-convex structure and pores on the surface of the stone-like paint are reduced, the difficulty of sand falling on the surface of the stone-like paint is enhanced, and the contamination resistance of the stone-like paint is improved;
secondly, titanium dioxide is added into the formula of the real stone paint, and under the action of sunlight, the titanium dioxide decomposes and oxidizes dust and dirt substances adsorbed on the surface of the real stone paint, so that the real stone paint has self-cleaning performance, and further, the self-cleaning function can be realized after the dust or the dirt substances are coated on the surface area of the real stone paint, and the contamination resistance of the real stone paint is ensured;
thirdly, the adhesion promoter is added in two parts by step, so that the adhesion strength of the basic slurry can be improved when the basic slurry is prepared, and the adhesion strength between the basic slurry and the bone pigment is further improved when the basic slurry and the bone pigment are mixed subsequently.
Detailed Description
The present invention will be described in further detail with reference to examples.
Raw material sources (the following materials can be selected, but are not limited to):
the dispersant was selected from the Dow H-30A dispersant available from the Dow chemical (Shanghai) Co., Ltd;
the ceramic particles are selected from Henan Boge refractory material Limited, and the mesh range is 400-mesh and 525-mesh;
polyvinylpyrrolidone was selected from Kyon chemical Co., Ltd of Shanghai;
polyurethane was selected from guangzhou hengyuan new materials, ltd;
the silane coupling agent is selected from A-172 coupling agent of Guangzhou Cyclo metallocene chemical Co., Ltd;
the cellulose is selected from hydroxyethyl cellulose of Kayin chemical Co., Ltd of Shanghai;
acrylic emulsion was selected from Guangzhou Guangxuan chemical Co., Ltd;
the leveling agent is selected from a Digao leveling agent Flow 425 from Kayin chemical Co., Ltd, Shanghai;
the antioxidant is selected from propyl gallate available from Shanghai Michelin Biochemical technology Ltd.
Examples of preparation of raw materials and/or intermediates
Preparation example 1
The adhesion promoter is prepared by the following steps:
the method comprises the following steps: 10 parts of ceramic particles are soaked in 2 parts of isopropanol and 0.8 part of polyvinylpyrrolidone, and the pretreated ceramic particles are obtained after ball milling and dispersion for 2 hours at the rotating speed of 1500r/min and standing and filtering.
Step two: adding 8 parts of silane coupling agent into 15 parts of polyurethane, slowly dripping 0.5 part of acetic acid solution while stirring, averagely dividing the pretreated ceramic particles prepared in the step one into 4 parts, adding each part of pretreated ceramic particles into the mixture at intervals of half an hour, and continuously stirring the mixture for 3 hours at a stirring speed of 500r/min to obtain the adhesion promoter.
Preparation example 2
The adhesion promoter is prepared by the following steps:
the method comprises the following steps: 5 parts of ceramic particles are soaked in 1.5 parts of isopropanol and 0.1 part of polyvinylpyrrolidone, and are subjected to ball milling dispersion for 1 hour at the rotating speed of 2000r/min, standing and filtering to obtain the pretreated ceramic particles.
Step two: adding 3 parts of silane coupling agent into 8 parts of polyurethane, slowly dropwise adding 0.5 part of acetic acid solution while stirring, averagely dividing the pretreated ceramic particles prepared in the step one into 3 parts, sequentially adding each part of pretreated ceramic particles at intervals of half an hour, and continuously stirring for 5 hours at the stirring speed of 800r/min to obtain the adhesion promoter.
Preparation example 3
The adhesion promoter is prepared by the following steps:
the method comprises the following steps: and (3) soaking 8 parts of ceramic particles in 1 part of isopropanol and 0.5 part of polyvinylpyrrolidone, performing ball milling dispersion for 1.5 hours at the rotating speed of 3000r/min, standing and filtering to obtain the pretreated ceramic particles.
Step two: adding 5 parts of silane coupling agent into 25 parts of polyurethane, slowly dropwise adding 0.5 part of acetic acid solution while stirring, averagely dividing the pretreated ceramic particles prepared in the step one into 6 parts, sequentially adding each part of pretreated ceramic particles at intervals of half an hour, and continuously stirring at the stirring speed of 700r/min for 6 hours to obtain the adhesion promoter.
Preparation example 4
The adhesion promoter is prepared by the following steps:
the method comprises the following steps: 10 parts of ceramic particles are soaked in 2 parts of isopropanol and 0.8 part of polyvinylpyrrolidone, and the pretreated ceramic particles are obtained after ball milling and dispersion for 2 hours at the rotating speed of 1500r/min and standing and filtering.
Step two: adding 8 parts of silane coupling agent into 15 parts of polyurethane, slowly dripping 0.5 part of acetic acid solution while stirring, adding the pretreated ceramic particles prepared in the step one at one time, and continuously stirring for 3 hours at the stirring speed of 500r/min to obtain the adhesion promoter.
Examples
Example 1
The building exterior wall stone-like paint is prepared by the following steps:
the method comprises the following steps: adding water, cellulose and glycol at the rotating speed of 400r/min, and stirring for 30min to obtain a mixture A.
Step two: adding acrylic emulsion, titanium dioxide, a film forming assistant, a leveling agent and an antioxidant into the mixture A, dividing the adhesion promoter into A parts of adhesion promoter and B parts of adhesion promoter according to the mass ratio of 1:1, adding the A parts of adhesion promoter, and stirring and mixing uniformly at 750r/min to obtain the base slurry.
Step three: and uniformly mixing the basic slurry, the bone pigment and the B part of the bonding accelerator to obtain the really stone paint. Wherein the amounts of the components are shown in table 1.
Table 1 amounts of each component of example 1 to example 7
Examples 2 to 5
The building exterior wall stone-like paint is different from the paint in example 1 in the amount shown in Table 1.
Example 6
The building exterior wall stone-like paint is prepared by the following steps:
the method comprises the following steps: adding water, cellulose and glycol at the rotating speed of 700r/min, and stirring for 10min to obtain a mixture A.
Step two: adding acrylic emulsion, titanium dioxide, a film forming assistant, a leveling agent and an antioxidant into the mixture A, dividing the adhesion promoter into A parts of adhesion promoter and B parts of adhesion promoter according to the mass ratio of 2:1, adding the A parts of adhesion promoter, and stirring and mixing uniformly at 720r/min to obtain the base slurry.
Step three: and uniformly mixing the basic slurry, the bone pigment and the B part of the bonding accelerator to obtain the really stone paint.
Example 7
The building exterior wall stone-like paint is prepared by the following steps:
the method comprises the following steps: adding water, cellulose and glycol at the rotating speed of 600r/min, and stirring for 20min to obtain a mixture A.
Step two: adding acrylic emulsion, titanium dioxide, a film forming assistant, a leveling agent and an antioxidant into the mixture A, dividing the adhesion promoter into A parts of adhesion promoter and B parts of adhesion promoter according to the mass ratio of 2:1, adding the A parts of adhesion promoter, and stirring and mixing uniformly at 700r/min to obtain the base slurry.
Step three: and uniformly mixing the basic slurry, the bone pigment and the B part of the bonding accelerator to obtain the really stone paint.
Comparative example
Comparative example 1
The building exterior wall stone-like paint is different from the paint in the embodiment 6 in that the bone pigment is adopted to replace titanium dioxide, and specifically comprises the following steps: the bone pigment is characterized in that the high-purity silica sand in the bone pigment is changed from 20 parts to 25 parts, the sintered color sand is changed from 40 parts to 42 parts, and the natural clay is changed from 5 parts to 8 parts.
Comparative example 2
A building exterior wall stone-like paint is different from the paint in example 6 in that acrylic emulsion is adopted to replace an adhesion promoter.
Comparative example 3
The building exterior wall stone-like paint is different from the paint in the embodiment 6 in that polyurethane is directly used as the adhesion promoter.
Performance test
And (3) contamination resistance inspection: test panels were prepared according to JG/T24-2000 "synthetic resin emulsion Sand wall building coatings", and the real stone paint prepared in each example and comparative example was coated on the corresponding test panels, respectively. The pollution source is fly ash, the particle size of the fly ash is 180-200 meshes and accounts for 20%, 200-250 meshes and 30%, and 250-325 meshes and accounts for 50%. Reflection coefficient: 25-30%, loss on ignition: 2-5%. Weighing 100g of fly ash and 100g of water by using a balance respectively, putting the fly ash and the water into a wide-mouth container, and uniformly stirring to prepare a mixture 1:1 fly ash water. The test panel coated with the sample was faced down, in a 1:1, horizontally standing the fly ash in water for 5s, taking out, naturally drying the fly ash in a standard environment for 2h, carrying out a washing test according to a test device and a test method in GB/T9780-2013, and evaluating after 5 cycles, wherein the evaluation grades are shown in Table 2.
TABLE 2 dirt pickup resistance rating
| Stain resistance rating/grade | Degree of contamination | Color difference of appearance | Grey card grade/grade |
| 0 | No pollution | No perceptible color difference | 5 |
| 1 | Very slight | There is a just noticeable color difference | 4 |
| 2 | Light and slight | Has obvious color difference | 3 |
| 3 | Medium and high grade | With a very pronounced chromatic aberration | 2 |
| 4 | Severe severity of disease | With severe color difference | 1 |
And (3) testing the bonding strength: the bonding strength of each example and comparative example was tested according to JG/T24-2000 "synthetic resin emulsion Sand wall architectural coatings".
Testing the artificial aging resistance: according to the regulation of GB/T1865-2009 xenon arc radiation filtered by artificial weathering and artificial radiation exposure of colored paints and varnishes. The radiation light source adopts a xenon lamp using a sunlight filter, the wavelength is 300-400 nm, and the average irradiance is 60W/m2The appearance evaluation is manually observed, and the smaller the grade is, the better the artificial aging resistance is. When the grade is 0, the paint layer has no cracking and no sand falling; when the grade is 1, the paint layer is not cracked and slightly falls off; when the grade is 2, the paint layer is slightly cracked and slightly dropped, when the grade is 3, the paint layer is slightly cracked and slightly dropped, and when the grade is 4, the paint layer is provided with a plurality of cracks and a large amount of dropped sand; at a rating of 5, the paint layer had a lot of cracks and severe shakeout.
TABLE 3 test results for each example and each comparative example
| Item | Adhesive strength/MPa | Resistance to artificial aging | Stain resistance |
| Example 1 | 4.8 | 1 | 1 |
| Example 2 | 4.8 | 2 | 2 |
| Example 3 | 4.9 | 0 | 0 |
| Example 4 | 4.8 | 3 | 2 |
| Example 5 | 4.2 | 2 | 2 |
| Example 6 | 5.1 | 2 | 0 |
| Example 7 | 5.0 | 2 | 0 |
| Comparative example 1 | 4.9 | 5 | 2 |
| Comparative example 2 | 2.7 | 4 | 4 |
| Comparative example 3 | 3.5 | 4 | 4 |
According to the detection results of the example 6 and the comparative example 2 in the table 3, the adhesion strength of the prepared stone-like paint is increased from 2.7 to 5.1, the adhesion strength is greatly increased, the artificial aging resistance is improved from 4 to 2, namely the condition that a paint layer has a plurality of cracks and a large amount of sand falls is improved from the original condition that the paint layer has a plurality of cracks and a small amount of sand falls, the contamination resistance is improved from 4 to 0, namely the severe contamination degree is improved to a very pollution-free degree, and the fact that the adhesion strength can be improved by adding the adhesion promoter in the formula of the stone-like paint is shown, the condition that sand particles in the stone-like paint easily fall is improved, and the problem that the surface of the stone-like paint is easily contaminated due to dust accumulation can be further improved.
According to the detection results of the example 6 and the comparative example 1 in the table 3, it is found that the artificial aging resistance of the prepared stone-like paint is greatly improved after the titanium dioxide is added, and this is probably because the titanium dioxide can decompose and oxidize dust and dirt substances adsorbed on the surface of the stone-like paint under the action of sunlight, so that the dirt resistance of the stone-like paint is improved.
According to the test results of example 6 and comparative example 3 in table 3, it is found that the polyurethane directly used as the adhesion promoter has no significant effect on the improvement of the bonding strength of the stone-like paint, and in combination with comparative example 3 and comparative example 2, compared with the polyurethane completely not added, the polyurethane prepared by the former has higher bonding strength than the latter, which is probably because the polyurethane has good adhesiveness, stability and water retention property, and the bonding strength between the emulsion and the aggregate can be improved. The ceramic particle modified composite polyurethane is shown to have a synergistic effect on enhancing the bonding strength.
According to the detection results of the examples 1 to 4 in the table 3, it can be seen that the artificial aging resistance of the example 4 is the worst, and then the example 2 and the example 3 are the best, and the example 4 is to add the ceramic particles into the polyurethane at one time, while the examples 2, 1 and 3 are all added in multiple portions, and the more the portions are, the better the effect is, which may be that the ceramic particles can be more uniformly dispersed in the system, the surface of the ceramic particles can be fully contacted with the polyurethane, and the composite dispersion degree of the ceramic particles in the polyurethane is further improved, so that the synergistic compounding effect of the ceramic particles and the polyurethane is better.
According to the detection results of the example 3 and the example 5 in table 3, it can be seen that the real stone paint prepared in the example 5 has reduced bonding strength and artificial aging resistance, which may be that natural clay is not used in the bone pigment in the example 5, and the natural clay has a certain adsorption property, and the natural clay is mixed with the high-purity silica sand and the sintered color sand together, so that the loosening degree of the high-purity silica sand and the sintered color sand can be reduced, the bonding strength of the real stone paint can be further improved, and the contamination resistance of the real stone paint can be improved.
According to the detection results of example 2, example 6 and example 7 in table 3, it is found that the bonding strength of the real stone paint prepared in example 6 and example 7 is slightly better than that of example 2, which results in better stain resistance of the whole real stone paint prepared in example 6 and example 7, and this shows that the real stone paint with stronger bonding strength can be prepared by adding the bonding accelerator to the second step and the third step sequentially according to the mass ratio of 2: 1.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, 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 invention.
Claims (8)
1. The building exterior wall stone-like paint is characterized by mainly comprising the following components in parts by weight:
18-35 parts of acrylic emulsion;
65-80 parts of bone pigment;
0.5-2 parts of cellulose;
0.5-3 parts of ethylene glycol;
12-20 parts of water;
5-10 parts of titanium dioxide;
15-30 parts of an adhesion promoter;
2-8 parts of a film-forming assistant;
0.3-1 part of a leveling agent;
0.5-1 part of antioxidant;
wherein, the bonding accelerant is ceramic particle modified composite polyurethane, which comprises the following preparation steps:
the method comprises the following steps: soaking 5-10 parts of ceramic particles in 1-2 parts of isopropanol and 0.1-0.8 part of polyvinylpyrrolidone, performing ball milling dispersion for 1-2 hours at the rotating speed of 1500-3000 r/min, standing and filtering to obtain pretreated ceramic particles;
step two: adding 3-8 parts of silane coupling agent into 8-25 parts of polyurethane, slowly dripping 0.5 part of acetic acid solution while stirring, adding the pretreated ceramic particles prepared in the step one, and continuously stirring for 3-5 hours to obtain the bonding accelerator;
the bone pigment comprises 20-30 parts of high-purity silica sand, 40-50 parts of sintered colored sand and 5-10 parts of natural clay.
2. The stone-like paint for external walls of buildings according to claim 1, wherein in the second step, the pretreated ceramic particles obtained in the first step are averagely divided into 3 to 6 parts, and each part of the pretreated ceramic particles are added at intervals of half an hour.
3. The stone paint for the exterior wall of the building as claimed in claim 1, wherein in the second step, the stirring speed is 500-800 r/min.
4. The building exterior wall stone-like paint as claimed in claim 1, which is mainly prepared from the following components in parts by weight:
20-25 parts of acrylic emulsion;
70-75 parts of bone pigment;
1-1.5 parts of cellulose;
1.5-2 parts of ethylene glycol;
15-18 parts of water;
5-8 parts of titanium dioxide;
20-25 parts of an adhesion promoter.
5. The stone paint for external walls of buildings as claimed in claim 1, wherein the antioxidant is any one of 4-methyl catechol, propyl gallate, butyl hydroxy anisole and dibutyl hydroxy toluene.
6. The preparation method of the stone-like paint for the exterior wall of the building as claimed in any one of claims 1 to 5, which is characterized by comprising the following steps:
the method comprises the following steps: adding water, cellulose and glycol at the rotation speed of 400-700r/min, and stirring for 10-30min to obtain a mixture A;
step two: adding acrylic emulsion, titanium dioxide, a film-forming assistant, a leveling agent and an antioxidant into the mixture A, dividing the adhesion promoter into A parts of adhesion promoter and B parts of adhesion promoter, adding the A parts of adhesion promoter, and stirring and mixing uniformly to obtain base slurry;
step three: and uniformly mixing the basic slurry, the bone pigment and the B part of the bonding accelerator to obtain the really stone paint.
7. The preparation method of the stone-like paint for the exterior wall of the building as claimed in claim 6, wherein the adhesion promoter is divided into A part of the adhesion promoter and B part of the adhesion promoter according to the mass ratio of 2: 1.
8. The method for preparing the stone-like paint for the exterior wall of the building as claimed in claim 6, wherein the stirring speed in the second step is 700-.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103724985A (en) * | 2013-12-12 | 2014-04-16 | 青岛海洋新材料科技有限公司 | Preparation method for hollow ceramic microbead filled epoxy modified polyurethane |
| CN109251561A (en) * | 2018-08-09 | 2019-01-22 | 合肥神舟建筑集团有限公司 | A kind of lacquer used for building exterior wall and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103724985A (en) * | 2013-12-12 | 2014-04-16 | 青岛海洋新材料科技有限公司 | Preparation method for hollow ceramic microbead filled epoxy modified polyurethane |
| CN109251561A (en) * | 2018-08-09 | 2019-01-22 | 合肥神舟建筑集团有限公司 | A kind of lacquer used for building exterior wall and preparation method thereof |
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Denomination of invention: A real stone paint for building exterior walls and its preparation method Granted publication date: 20220325 Pledgee: Agricultural Bank of China Limited by Share Ltd. Xiamen Xiangan branch Pledgor: Xuanwei (Xiamen) Coatings Co.,Ltd. Registration number: Y2024980017177 |