CN111234672A - Heat-preservation and heat-insulation stone-like paint for building exterior wall and preparation method thereof - Google Patents
Heat-preservation and heat-insulation stone-like paint for building exterior wall and preparation method thereof Download PDFInfo
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- CN111234672A CN111234672A CN202010185415.6A CN202010185415A CN111234672A CN 111234672 A CN111234672 A CN 111234672A CN 202010185415 A CN202010185415 A CN 202010185415A CN 111234672 A CN111234672 A CN 111234672A
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Abstract
The invention provides a heat-preservation and heat-insulation stone-like paint for building exterior walls, which comprises the following raw materials in parts by weight: 300 parts of water 200-containing materials, 10-20 parts of sodium carboxymethylcellulose, 2-5 parts of wetting dispersant, 50-70 parts of quartz sand component materials, 30-70 parts of phase change energy storage materials, 2-6 parts of defoaming agent, 10-20 parts of film forming auxiliary agent, 1-3 parts of preservative, 15-30 parts of polymer emulsion and 1-3 parts of silicon dioxide aerogel. The heat-insulating stone-like paint for the building exterior wall has good heat-insulating property, compact coating surface and loose interior, can effectively combine waterproof and heat-insulating properties, has high thermal stability, is a composite heat-insulating paint with excellent performance, has a heat conductivity coefficient of 0.017W/(m.k) -0.022W/(m.k), and has good heat-insulating effect.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a heat-preservation and heat-insulation stone-like paint for a building outer wall and a preparation method thereof.
Background
The stone-like paint is a coating material with decorative effect similar to marble and granite, mainly made of high-molecular polymer, natural colour stone sand and related adjuvant, after dried and solidified, it is hard like stone, and looks like natural stone. The building decorated by the stone paint has natural and real natural color, gives people elegant, harmonious and solemn aesthetic feeling, is suitable for indoor and outdoor decoration of various buildings, especially for decoration on curved buildings, and can have the effects of lively and lifelike and returning to nature. The stone-like paint has the characteristics of water resistance, acid and alkali resistance, pollution resistance, no toxicity, no odor, strong bonding force, fastness and the like, can effectively prevent the corrosion of the external severe environment to the building and prolong the service life of the building, and is particularly suitable for being used in cold areas because the stone-like paint has good adhesive force and freeze-thaw resistance.
The requirements of the market on heat preservation and energy conservation of buildings are higher and higher at present, the heat preservation effect of the building body cannot reach the optimal effect only by using the heat preservation wall body, and the heat insulation performance of the wall body can be greatly improved by coating the heat preservation coating outside the heat preservation wall body. The common stone-like paint has low degree of matching with a heat-insulating wall body, is easy to generate cracks, and does not have the stone-like paint which can insulate heat and has the effect of natural stone in the current market.
Disclosure of Invention
The invention aims to provide a heat-insulating stone-like paint for building exterior walls and a preparation method thereof, which effectively combine waterproof and heat-insulating properties, have high thermal stability and excellent performance, are composite heat-insulating coatings, have a thermal conductivity coefficient of 0.017W/(m.k) -0.022W/(m.k), and have good heat-insulating effects.
The novel phase change energy storage material is prepared in research and development, and has a better heat preservation and insulation effect compared with an energy storage material under the compounding action of the polyhydric alcohol and the butyl stearate.
The technical scheme of the invention is realized as follows:
the invention provides a heat-preservation and heat-insulation stone-like paint for building exterior walls, which comprises the following raw materials in parts by weight: 300 parts of water 200-containing materials, 10-20 parts of sodium carboxymethylcellulose, 2-5 parts of wetting dispersant, 50-70 parts of quartz sand component materials, 30-70 parts of phase change energy storage materials, 2-6 parts of defoaming agent, 10-20 parts of film forming auxiliary agent, 1-3 parts of preservative, 15-30 parts of polymer emulsion and 1-3 parts of silicon dioxide aerogel;
the film-forming auxiliary agent is one of propylene glycol butyl ether and propylene glycol methyl ether acetate;
the phase change energy storage material is obtained by compounding and mixing polyhydric alcohol, butyl stearate and lecithin, adding the mixture into kaolin powder calcined at high temperature, uniformly stirring the mixture, solidifying the mixture, grinding the mixture, heating the mixture to be uniform, continuously cooling and solidifying the mixture, and grinding the mixture;
the polymer emulsion is selected from one or more of polyvinyl acetate emulsion, pure acrylic emulsion, vinyl acetate-acrylic emulsion, styrene-acrylic emulsion, polyurethane emulsion and silicone-acrylic emulsion.
As a further improvement of the invention, the feed comprises the following raw materials in parts by weight: 230-270 parts of water, 12-18 parts of sodium carboxymethylcellulose, 2-4 parts of wetting dispersant, 56-65 parts of quartz sand component, 35-62 parts of phase change energy storage material, 3-5 parts of defoaming agent, 12-16 parts of film forming assistant, 1-2 parts of preservative, 17-27 parts of polymer emulsion and 2-3 parts of silicon dioxide aerogel.
As a further improvement of the invention, the feed comprises the following raw materials in parts by weight: 252 parts of water, 16 parts of sodium carboxymethylcellulose, 3 parts of wetting dispersant, 61 parts of quartz sand component, 45 parts of phase change energy storage material, 4 parts of defoaming agent, 14 parts of film forming additive, 1.4 parts of preservative, 21 parts of polymer emulsion and 2.6 parts of silicon dioxide aerogel.
As a further improvement of the invention, the preparation method of the phase change energy storage material comprises the following steps:
s1, treatment of kaolin: grinding kaolin, soaking the kaolin in dilute alkali liquor, cleaning with clear water, calcining in a muffle furnace at 1000-1500 ℃ for 3-5h, cooling, taking out, and grinding to 30-80 meshes for later use;
s2, respectively heating and melting the polyhydric alcohol, the butyl stearate and the lecithin, uniformly mixing, keeping a liquid state, adding the mixture into the kaolin powder obtained in the step S1, uniformly stirring, cooling and solidifying, grinding to 30-80 meshes, heating to the temperature of 120-.
As a further improvement of the invention, the polyalcohol is one or a mixture of several selected from polyethylene glycol 200, polyethylene glycol 400, neopentyl glycol, pentaerythritol, trimethylolethane and trimethylolpropane.
As a further improvement of the invention, the mass ratio of the polyhydric alcohol to the butyl stearate to the lecithin is (3-7): (3-5): 1, the mass ratio of the kaolin to the total mass of the polyhydric alcohol, the butyl stearate and the lecithin is 1: (0.5-0.8), wherein the dilute alkali solution is 0.01-0.1mol/L alkali solution, and the alkali is selected from one or a mixture of NaOH, KOH and barium hydroxide.
As a further improvement of the invention, the quartz sand component comprises 20-40 mesh quartz sand, 60-80 mesh quartz sand and 100-120 mesh quartz sand, and the mass ratio is 1: (1-3): (1-2).
As a further improvement of the invention, the defoaming agent is selected from any one or two of a mineral oil defoaming agent, a mixture defoaming agent of aliphatic hydrocarbon and emulsifier which are mixed in any proportion, and the wetting dispersant is selected from one or two of a polycarboxylic acid ammonium salt dispersant, a nonionic surface active dispersant or an anionic surface active dispersant which are mixed in any proportion; the preservative is selected from any one of isothiazolinone, 1, 2-benzisothiazolin-3-one, 2-dibromo-cyanoacetamide and methylene bis thiocyanate or two of the isothiazolinone, the 1, 2-benzisothiazolin-3-one and the 2, 2-dibromo-cyanoacetamide are mixed in any proportion.
The invention further provides a preparation method of the heat-preservation and heat-insulation stone-like paint for the building exterior wall, which specifically comprises the following steps:
s1, adding sodium carboxymethylcellulose, silicon dioxide aerogel and water with the volume of 3/4 into a container, stirring and slowly heating to 30-50 ℃ at the rotating speed of 100-150r/min, continuously stirring for 3-5h, adding a phase change energy storage material and a wetting dispersant, increasing the rotating speed to 500-300 r/min, continuously adding a quartz sand material after uniformly stirring, and stirring at the original speed for 30-60min to obtain a mixed paint material;
s2, adding the rest water, the polymer emulsion, the defoaming agent, the film-forming assistant and the preservative into the other container, homogenizing to obtain a coating emulsion, fully mixing the emulsion and the mixed paint obtained in the step S1, and stirring for 20-30min at 500r/min of 300-
As a further improvement of the invention, the homogenization condition is 10000-12000r/min homogenization for 1-2 min.
The invention has the following beneficial effects:
the heat-insulating stone-like paint for the building exterior wall has good heat-insulating property, compact coating surface and loose interior, can effectively combine waterproof and heat-insulating properties, has high thermal stability, is a composite heat-insulating paint with excellent performance, has a heat conductivity coefficient of 0.017W/(m.k) -0.022W/(m.k), and has good heat-insulating effect.
According to the heat-insulating stone-like paint for the building outer wall, the quartz sand component is added, the quartz sand with different granularities is compounded to serve as an aggregate component, the sodium carboxymethyl cellulose serving as a binding material is optimized, the stone-like paint simulation performance of the paint is improved, the mechanical properties such as wear resistance, compression resistance and fracture resistance of the paint are improved, and the adhesion of a paint film to a base material is improved.
The invention adds a phase-change energy storage material, kaolin is used as a microcosmic via hole material, organic matters and other impurity components on the surface of the kaolin are removed after the treatment of dilute alkali liquor, kaolin powder with a porous microstructure is formed after further high-temperature calcination, a solid material (a compound solution of polyhydric alcohol, butyl stearate and lecithin) for phase-change energy storage is added, the compound solution flows into holes to form the phase-change energy storage material, and the phase-change energy storage material is homogenized after further heating, so that the compound solution can more uniformly flow into the pore structure of the kaolin to form phase-change energy storage microspheres; the compounding of the polyhydric alcohol and the butyl stearate has better heat absorption and energy storage capacity, and the polyhydric alcohol and the butyl stearate can be mutually dissolved better under the combination action of lecithin, so that better energy storage and heat insulation effects can be exerted;
the coating provided by the invention not only has excellent stone simulation characteristics, but also has stable performance, does not influence the rheological property of the coating, and can obviously improve the decorative effect. And has the advantages of stronger heat preservation and insulation property, fire resistance, waterproof capability, durability, water-based environmental protection and the like compared with the common real stone paint.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The specific parameters of the raw materials in the embodiment of the invention are as follows:
polycarboxylic acid ammonium salt dispersant, trade mark SN5027, knop japan.
The mineral oil defoaming agent is 1072 emulsion type mineral oil defoaming agent with density of 0.8-0.95 g/L.
The isothiazolinone preservative is benzisothiazolinone.
Polyvinyl acetate emulsion CAS number 9003-20-7, WX-232, Star light synthetic materials Co., Ltd.
The silicon dioxide aerogel has a microscopic particle size of 40-60 nm, a macroscopic particle size of 50 um-5 mm and a porosity of 90-98%.
Example 1Heat-preservation and heat-insulation stone-like paint for building exterior wall
The raw materials comprise the following components in parts by weight: 200 parts of water, 10 parts of sodium carboxymethylcellulose, 2 parts of a nonionic surface active dispersing agent, 50 parts of a quartz sand component, 30 parts of a phase change energy storage material, 2 parts of a mixture defoaming agent of aliphatic hydrocarbon and an emulsifier, 10 parts of propylene glycol monomethyl ether acetate, 1 part of methylene bis thiocyanate, 15 parts of polyurethane emulsion and 1 part of silicon dioxide aerogel.
The quartz sand component comprises 20-40 mesh quartz sand, 60-80 mesh quartz sand and 100-120 mesh quartz sand, and the mass ratio is 1: 1: 1.
the preparation method of the phase change energy storage material comprises the following steps:
s1, treatment of kaolin: soaking 14g of kaolin in 0.01mol/L dilute NaOH solution, washing with clean water, calcining in a muffle furnace at 1000 ℃ for 3h, cooling, taking out, and grinding to 30-80 meshes for later use;
s2, respectively heating and melting 3g of neopentyl glycol, 3g of butyl stearate and 1g of lecithin, uniformly mixing, keeping the liquid state, adding the mixture into the kaolin powder obtained in the step S1, uniformly stirring, cooling and solidifying, grinding to 30-80 meshes, heating to 120 ℃, homogenizing at 10000r/min for 1min, continuing cooling and solidifying, and grinding to 100-120 meshes to obtain the phase change energy storage material.
The preparation method of the heat-insulating stone-like paint for the building exterior wall comprises the following steps:
s1, adding sodium carboxymethylcellulose, silica aerogel and water with the volume of 3/4 into a container, slowly heating to 30 ℃ at the rotating speed of 100r/min while stirring, continuously stirring for 3 hours, adding a phase change energy storage material and a nonionic surface active dispersing agent, increasing the rotating speed to 300r/min, continuously adding a quartz sand material after uniformly stirring, and stirring at the original speed for 30 minutes to obtain a mixed paint vehicle;
s2, adding the rest water, the polyurethane emulsion, the mixture defoamer of aliphatic hydrocarbon and an emulsifier, propylene glycol methyl ether acetate and methylene bis thiocyanate into another container, homogenizing for 1min at 10000r/min to obtain a coating emulsion, fully mixing the emulsion and the mixed paint obtained in the step S1, and stirring for 20min at 300r/min to obtain the heat-preservation and heat-insulation real stone paint for the building exterior wall.
Example 2Heat-preservation and heat-insulation stone-like paint for building exterior wall
The raw materials comprise the following components in parts by weight: 300 parts of water, 20 parts of sodium carboxymethylcellulose, 5 parts of an anionic surface active dispersant, 70 parts of quartz sand component, 70 parts of a phase change energy storage material, 6 parts of a mixture defoamer of aliphatic hydrocarbon and an emulsifier, 20 parts of propylene glycol methyl ether acetate, 3 parts of 1, 2-benzisothiazolin-3-one, 30 parts of silicone-acrylic emulsion and 3 parts of silicon dioxide aerogel.
The quartz sand component comprises 20-40 mesh quartz sand, 60-80 mesh quartz sand and 100-120 mesh quartz sand, and the mass ratio is 1: 3: 2.
the preparation method of the phase change energy storage material comprises the following steps:
s1, treatment of kaolin: soaking 16.25g of kaolin in 0.1mol/L diluted KOH solution, cleaning with clear water, calcining at 1500 ℃ in a muffle furnace for 5 hours, cooling, taking out, and grinding to 30-80 meshes for later use;
s2, respectively heating and melting 7g of pentaerythritol, 5g of butyl stearate and 1g of lecithin, uniformly mixing, keeping the liquid state, adding the mixture into the kaolin powder obtained in the step S1, uniformly stirring, cooling and solidifying, grinding to 30-80 meshes, heating to 150 ℃, homogenizing at 12000r/min for 2min, continuing cooling and solidifying, and grinding to 100-120 meshes to obtain the phase change energy storage material.
The preparation method of the heat-insulating stone-like paint for the building exterior wall comprises the following steps:
s1, adding sodium carboxymethylcellulose, silica aerogel and water with the volume of 3/4 into a container, slowly heating to 50 ℃ at the rotating speed of 150r/min while stirring, continuously stirring for 5 hours, adding a phase change energy storage material and an anionic surface active dispersing agent, increasing the rotating speed to 500r/min, continuously adding a quartz sand material after uniformly stirring, and stirring at the original speed for 60 minutes to obtain a mixed paint vehicle;
s2, adding the rest of water, the silicone-acrylic emulsion, the mixture defoamer of aliphatic hydrocarbon and an emulsifier, propylene glycol methyl ether acetate, 1, 2-benzisothiazolin-3-one into another container, homogenizing at 12000r/min for 2min to obtain a coating emulsion, fully mixing the emulsion and the mixed paint vehicle obtained in the step S1, and stirring at 500r/min for 30min to obtain the heat-preservation and heat-insulation stone-like paint for the building exterior wall.
Example 3Heat-preservation and heat-insulation stone-like paint for building exterior wall
The raw materials comprise the following components in parts by weight: 230 parts of water, 12 parts of sodium carboxymethylcellulose, 2 parts of a nonionic surface active dispersing agent, 56 parts of a quartz sand component, 35 parts of a phase change energy storage material, 3 parts of a mixture antifoaming agent of aliphatic hydrocarbon and an emulsifier, 12 parts of propylene glycol butyl ether, 1 part of methylene bis-thiocyanate, 17 parts of a silicone-acrylic emulsion and 2 parts of silicon dioxide aerogel.
The quartz sand component comprises 20-40 mesh quartz sand, 60-80 mesh quartz sand and 100-120 mesh quartz sand, and the mass ratio is 1: 1.5: 1.2.
the preparation method of the phase change energy storage material comprises the following steps:
s1, treatment of kaolin: soaking 18g of kaolin into 0.04mol/L diluted barium hydroxide, washing with clean water, calcining at 1150 ℃ for 3.5h in a muffle furnace, cooling, taking out, and grinding to 30-80 meshes for later use;
s2, respectively heating and melting 4g of trimethylolpropane, 4g of butyl stearate and 1g of lecithin, uniformly mixing, keeping the liquid state, adding the mixture into the kaolin powder obtained in the step S1, uniformly stirring, cooling and solidifying, grinding to 30-80 meshes, heating to 125 ℃, homogenizing at 10500r/min for 1min, continuing cooling and solidifying, and grinding to 100-120 meshes to obtain the phase change energy storage material.
The preparation method of the heat-insulating stone-like paint for the building exterior wall comprises the following steps:
s1, adding sodium carboxymethylcellulose, silica aerogel and water with the volume of 3/4 into a container, slowly heating to 35 ℃ at the rotating speed of 115r/min while stirring, continuously stirring for 3.5h, adding a phase change energy storage material and a nonionic surface active dispersing agent, increasing the rotating speed to 350r/min, continuously adding a quartz sand material after uniformly stirring, and stirring for 35min at the original speed to obtain a mixed paint vehicle;
s2, adding the rest of water, the silicone-acrylic emulsion, the mixture defoamer of aliphatic hydrocarbon and emulsifier, propylene glycol butyl ether and methylene bis thiocyanate into another container, homogenizing for 1min at 10500r/min to obtain a coating emulsion, fully mixing the emulsion and the mixed paint obtained in the step S1, and stirring for 22min at 350r/min to obtain the heat-insulating stone-like paint for the building exterior wall.
Example 4Heat-preservation and heat-insulation stone-like paint for building exterior wall
The raw materials comprise the following components in parts by weight: 270 parts of water, 18 parts of sodium carboxymethylcellulose, 4 parts of an anionic surface active dispersant, 65 parts of quartz sand component, 62 parts of a phase change energy storage material, 5 parts of a mixture defoamer of aliphatic hydrocarbon and an emulsifier, 16 parts of propylene glycol butyl ether, 2 parts of 2, 2-dibromo-cyano acetamide, 27 parts of pure acrylic emulsion and 3 parts of silicon dioxide aerogel.
The quartz sand component comprises 20-40 mesh quartz sand, 60-80 mesh quartz sand and 100-120 mesh quartz sand, and the mass ratio is 1: 2.5: 1.8.
the preparation method of the phase change energy storage material comprises the following steps:
s1, treatment of kaolin: soaking 13.6g of kaolin in 0.08mol/L diluted NaOH solution, washing with clean water, calcining at 1450 ℃ in a muffle furnace for 4h, cooling, taking out, and grinding to 30-80 meshes for later use;
s2, respectively heating and melting 6g of trimethylolethane, 4g of butyl stearate and 1g of lecithin, uniformly mixing, keeping the liquid state, adding the mixture into the kaolin powder obtained in the step S1, uniformly stirring, cooling and solidifying the mixture, grinding the mixture to be 30-80 meshes, heating the mixture to 145 ℃, homogenizing the mixture at 11500r/min for 2min, continuing cooling and solidifying the mixture, and grinding the mixture to be 120 meshes at 100 degrees so as to obtain the phase change energy storage material.
The preparation method of the heat-insulating stone-like paint for the building exterior wall comprises the following steps:
s1, adding sodium carboxymethylcellulose, silica aerogel and water with the volume of 3/4 into a container, slowly heating to 45 ℃ at the rotating speed of 135r/min while stirring, continuously stirring for 4.5h, adding a phase change energy storage material and an anionic surface active dispersing agent, increasing the rotating speed to 450r/min, continuously adding a quartz sand material after uniformly stirring, and stirring at the original speed for 50min to obtain a mixed paint vehicle;
s2, adding the rest water, the pure acrylic emulsion, the mixture defoamer of aliphatic hydrocarbon and the emulsifier, propylene glycol monobutyl ether, 2-dibromo-cyanoacetamide into another container, homogenizing at 11500r/min for 2min to obtain a coating emulsion, fully mixing the emulsion and the mixed paint obtained in the step S1, and stirring at 450r/min for 28min to obtain the heat-preservation and heat-insulation stone-like paint for the building exterior wall.
Example 5Heat-preservation and heat-insulation stone-like paint for building exterior wall
The raw materials comprise the following components in parts by weight: 252 parts of water, 16 parts of sodium carboxymethylcellulose, 3 parts of polycarboxylate dispersant, 61 parts of quartz sand component, 45 parts of phase change energy storage material, 4 parts of mineral oil defoamer, 14 parts of propylene glycol methyl ether acetate, 1.4 parts of isothiazolinone preservative, 21 parts of polyvinyl acetate emulsion and 2.6 parts of silicon dioxide aerogel.
The quartz sand component comprises 20-40 mesh quartz sand, 60-80 mesh quartz sand and 100-120 mesh quartz sand, and the mass ratio is 1: 2: 1.5.
the preparation method of the phase change energy storage material comprises the following steps:
s1, treatment of kaolin: soaking 20g of kaolin in 0.05mol/L diluted KOH solution, washing with clean water, calcining in a muffle furnace at 1250 ℃ for 4 hours, cooling, taking out, and grinding to 30-80 meshes for later use;
s2, respectively heating and melting 5g of polyethylene glycol 200, 4g of butyl stearate and 1g of lecithin, uniformly mixing, keeping the liquid state, adding the mixture into the kaolin powder obtained in the step S1, uniformly stirring, cooling and solidifying, grinding to 30-80 meshes, heating to 135 ℃, homogenizing at 11000r/min for 1.5min, continuing cooling and solidifying, and grinding to 100-120 meshes to obtain the phase change energy storage material.
The preparation method of the heat-insulating stone-like paint for the building exterior wall comprises the following steps:
s1, adding sodium carboxymethylcellulose, silica aerogel and water with the volume of 3/4 into a container, stirring at the rotating speed of 125r/min while slowly heating to 40 ℃, continuously stirring for 4 hours, adding a phase change energy storage material and a polycarboxylate dispersant, increasing the rotating speed to 400r/min, continuously adding quartz sand after uniformly stirring, and stirring at the original speed for 30-60min to obtain a mixed paint vehicle;
s2, adding the rest water, the polyvinyl acetate emulsion, the mineral oil defoaming agent, the propylene glycol methyl ether acetate and the isothiazolinone preservative into another container, homogenizing for 1.5min at 11000r/min to obtain a coated emulsion, fully mixing the emulsion and the mixed paint obtained in the step S1, and stirring for 25min at 400r/min to obtain the heat-insulating stone-like paint for the building exterior wall.
Comparative example 1
Compared with example 5, common hollow glass beads (purchased from Dongyunou New Material Co., Ltd.) are used to replace the phase change energy storage material.
The raw materials comprise the following components in parts by weight: 252 parts of water, 16 parts of sodium carboxymethylcellulose, 3 parts of polycarboxylate dispersant, 61 parts of quartz sand component, 45 parts of common hollow glass beads, 4 parts of mineral oil defoamer, 14 parts of propylene glycol monomethyl ether acetate, 1.4 parts of isothiazolinone preservative, 21 parts of polyvinyl acetate emulsion and 2.6 parts of silicon dioxide aerogel.
The quartz sand component comprises 20-40 mesh quartz sand, 60-80 mesh quartz sand and 100-120 mesh quartz sand, and the mass ratio is 1: 2: 1.5.
the preparation method of the heat-insulating stone-like paint for the building exterior wall comprises the following steps:
s1, adding sodium carboxymethylcellulose, silica aerogel and water with the volume of 3/4 into a container, slowly heating to 40 ℃ at the rotating speed of 125r/min while stirring, continuously stirring for 4 hours, adding common hollow glass beads and polycarboxylate dispersant, increasing the rotating speed to 400r/min, continuously adding quartz sand for material assembly after uniform stirring, and stirring at the original speed for 30-60min to obtain a mixed paint vehicle;
s2, adding the rest water, the polyvinyl acetate emulsion, the mineral oil defoaming agent, the propylene glycol methyl ether acetate and the isothiazolinone preservative into another container, homogenizing for 1.5min at 11000r/min to obtain a coated emulsion, fully mixing the emulsion and the mixed paint obtained in the step S1, and stirring for 25min at 400r/min to obtain the heat-insulating stone-like paint for the building exterior wall.
Comparative example 2
Compared with example 5, no polycarboxylate ammonium salt dispersant was added, and other conditions were not changed.
The raw materials comprise the following components in parts by weight: 255 parts of water, 16 parts of sodium carboxymethylcellulose, 61 parts of quartz sand component, 45 parts of phase change energy storage material, 4 parts of mineral oil defoamer, 14 parts of propylene glycol methyl ether acetate, 1.4 parts of isothiazolinone preservative, 21 parts of polyvinyl acetate emulsion and 2.6 parts of silicon dioxide aerogel.
The quartz sand component comprises 20-40 mesh quartz sand, 60-80 mesh quartz sand and 100-120 mesh quartz sand, and the mass ratio is 1: 2: 1.5.
the preparation method of the phase change energy storage material comprises the following steps:
s1, treatment of kaolin: soaking 20g of kaolin in 0.05mol/L diluted KOH solution, washing with clean water, calcining in a muffle furnace at 1250 ℃ for 4 hours, cooling, taking out, and grinding to 30-80 meshes for later use;
s2, respectively heating and melting 5g of polyethylene glycol 200, 4g of butyl stearate and 1g of lecithin, uniformly mixing, keeping the liquid state, adding the mixture into the kaolin powder obtained in the step S1, uniformly stirring, cooling and solidifying, grinding to 30-80 meshes, heating to 135 ℃, homogenizing at 11000r/min for 1.5min, continuing cooling and solidifying, and grinding to 100-120 meshes to obtain the phase change energy storage material.
The preparation method of the heat-insulating stone-like paint for the building exterior wall comprises the following steps:
s1, adding sodium carboxymethylcellulose, silica aerogel and water with the volume of 3/4 into a container, slowly heating to 40 ℃ at the rotating speed of 125r/min while stirring, continuously stirring for 4 hours, adding a phase change energy storage material, increasing the rotating speed to 400r/min, continuously adding a quartz sand material after uniformly stirring, and stirring at the original speed for 30-60min to obtain a mixed paint vehicle;
s2, adding the rest water, the polyvinyl acetate emulsion, the mineral oil defoaming agent, the propylene glycol methyl ether acetate and the isothiazolinone preservative into another container, homogenizing for 1.5min at 11000r/min to obtain a coated emulsion, fully mixing the emulsion and the mixed paint obtained in the step S1, and stirring for 25min at 400r/min to obtain the heat-insulating stone-like paint for the building exterior wall.
Comparative example 3
Compared with example 5, the phase change energy storage material is not added, and other conditions are not changed.
The raw materials comprise the following components in parts by weight: 297 parts of water, 16 parts of sodium carboxymethylcellulose, 3 parts of polycarboxylate ammonium salt dispersant, 61 parts of quartz sand component, 4 parts of mineral oil defoamer, 14 parts of propylene glycol methyl ether acetate, 1.4 parts of isothiazolinone preservative, 21 parts of polyvinyl acetate emulsion and 2.6 parts of silicon dioxide aerogel.
The quartz sand component comprises 20-40 mesh quartz sand, 60-80 mesh quartz sand and 100-120 mesh quartz sand, and the mass ratio is 1: 2: 1.5.
the preparation method of the heat-insulating stone-like paint for the building exterior wall comprises the following steps:
s1, adding sodium carboxymethylcellulose, silica aerogel and water with the volume of 3/4 into a container, slowly heating to 40 ℃ at the rotating speed of 125r/min while stirring, continuously stirring for 4 hours, adding an ammonium polycarboxylate dispersant, increasing the rotating speed to 400r/min, continuously adding quartz sand after uniformly stirring, and stirring at the original speed for 30-60min to obtain a mixed paint vehicle;
s2, adding the rest water, the polyvinyl acetate emulsion, the mineral oil defoaming agent, the propylene glycol methyl ether acetate and the isothiazolinone preservative into another container, homogenizing for 1.5min at 11000r/min to obtain a coated emulsion, fully mixing the emulsion and the mixed paint obtained in the step S1, and stirring for 25min at 400r/min to obtain the heat-insulating stone-like paint for the building exterior wall.
Comparative example 4
Compared with the example 5, butyl stearate is not added in the preparation of the phase change energy storage material, and other conditions are not changed.
The raw materials comprise the following components in parts by weight: 252 parts of water, 16 parts of sodium carboxymethylcellulose, 3 parts of polycarboxylate dispersant, 61 parts of quartz sand component, 45 parts of phase change energy storage material, 4 parts of mineral oil defoamer, 14 parts of propylene glycol methyl ether acetate, 1.4 parts of isothiazolinone preservative, 21 parts of polyvinyl acetate emulsion and 2.6 parts of silicon dioxide aerogel.
The quartz sand component comprises 20-40 mesh quartz sand, 60-80 mesh quartz sand and 100-120 mesh quartz sand, and the mass ratio is 1: 2: 1.5.
the preparation method of the phase change energy storage material comprises the following steps:
s1, treatment of kaolin: soaking 20g of kaolin in 0.05mol/L diluted KOH solution, washing with clean water, calcining in a muffle furnace at 1250 ℃ for 4 hours, cooling, taking out, and grinding to 30-80 meshes for later use;
s2, respectively heating and melting 9g of polyethylene glycol 200 and 1g of lecithin, uniformly mixing, keeping a liquid state, adding the mixture into the kaolin powder obtained in the step S1, uniformly stirring, cooling and solidifying, grinding to 30-80 meshes, heating to 135 ℃, homogenizing at 11000r/min for 1.5min, continuing cooling and solidifying, grinding to 100-120 meshes, and obtaining the phase change energy storage material.
The preparation method of the heat-insulating stone-like paint for the building exterior wall comprises the following steps:
s1, adding sodium carboxymethylcellulose, silica aerogel and water with the volume of 3/4 into a container, stirring at the rotating speed of 125r/min while slowly heating to 40 ℃, continuously stirring for 4 hours, adding a phase change energy storage material and a polycarboxylate dispersant, increasing the rotating speed to 400r/min, continuously adding quartz sand after uniformly stirring, and stirring at the original speed for 30-60min to obtain a mixed paint vehicle;
s2, adding the rest water, the polyvinyl acetate emulsion, the mineral oil defoaming agent, the propylene glycol methyl ether acetate and the isothiazolinone preservative into another container, homogenizing for 1.5min at 11000r/min to obtain a coated emulsion, fully mixing the emulsion and the mixed paint obtained in the step S1, and stirring for 25min at 400r/min to obtain the heat-insulating stone-like paint for the building exterior wall.
Comparative example 5
Compared with the example 5, the preparation of the phase change energy storage material is not added with the polyethylene glycol 200, and other conditions are not changed.
The raw materials comprise the following components in parts by weight: 252 parts of water, 16 parts of sodium carboxymethylcellulose, 3 parts of polycarboxylate dispersant, 61 parts of quartz sand component, 45 parts of phase change energy storage material, 4 parts of mineral oil defoamer, 14 parts of propylene glycol methyl ether acetate, 1.4 parts of isothiazolinone preservative, 21 parts of polyvinyl acetate emulsion and 2.6 parts of silicon dioxide aerogel.
The quartz sand component comprises 20-40 mesh quartz sand, 60-80 mesh quartz sand and 100-120 mesh quartz sand, and the mass ratio is 1: 2: 1.5.
the preparation method of the phase change energy storage material comprises the following steps:
s1, treatment of kaolin: soaking 20g of kaolin in 0.05mol/L diluted KOH solution, washing with clean water, calcining in a muffle furnace at 1250 ℃ for 4 hours, cooling, taking out, and grinding to 30-80 meshes for later use;
s2, respectively heating and melting 9g of polyethylene glycol 200 and 1g of lecithin, uniformly mixing, keeping a liquid state, adding the mixture into the kaolin powder obtained in the step S1, uniformly stirring, cooling and solidifying, grinding to 30-80 meshes, heating to 135 ℃, homogenizing at 11000r/min for 1.5min, continuing cooling and solidifying, grinding to 100-120 meshes, and obtaining the phase change energy storage material.
The preparation method of the heat-insulating stone-like paint for the building exterior wall comprises the following steps:
s1, adding sodium carboxymethylcellulose, silica aerogel and water with the volume of 3/4 into a container, stirring at the rotating speed of 125r/min while slowly heating to 40 ℃, continuously stirring for 4 hours, adding a phase change energy storage material and a polycarboxylate dispersant, increasing the rotating speed to 400r/min, continuously adding quartz sand after uniformly stirring, and stirring at the original speed for 30-60min to obtain a mixed paint vehicle;
s2, adding the rest water, the polyvinyl acetate emulsion, the mineral oil defoaming agent, the propylene glycol methyl ether acetate and the isothiazolinone preservative into another container, homogenizing for 1.5min at 11000r/min to obtain a coated emulsion, fully mixing the emulsion and the mixed paint obtained in the step S1, and stirring for 25min at 400r/min to obtain the heat-insulating stone-like paint for the building exterior wall.
Test example 1
The heat-insulating stone paint for the building exterior wall prepared in the embodiments 1 to 5 and the comparative examples 1 to 5 of the invention and the commercial stone paint (purchased from giruri coatings ltd, langzhou) were subjected to performance tests, the detection standards are shown in table 1, and the results are shown in tables 2 to 4.
TABLE 1
TABLE 2
TABLE 3
TABLE 4
As can be seen from the above table, the thermal insulation stone-like paint for the building exterior wall prepared in the embodiments 1 to 5 of the invention has various performances obviously superior to those of the commercial products, and has extremely low thermal conductivity (0.017W/(m.k) -0.022W/(m.k)) and better mechanical properties.
Compared with the prior art, the phase-change energy storage material is replaced by the common glass beads in the comparative example 1, the heat conductivity coefficient is obviously increased, the surface temperature difference is obviously reduced, and the prepared phase-change energy storage material enables the paint to have better heat preservation and heat insulation performance, and meanwhile, the paint added with the common glass beads is poorer in mechanical property and is not alkali-resistant;
the wetting dispersant and the phase change energy storage material are not added in the comparative example 2 and the comparative example 3 respectively, so that the heat conductivity is obviously reduced, and the addition of the wetting dispersant and the phase change energy storage material can improve the heat preservation and heat insulation performance of the coating and has a synergistic effect; the mechanical property of the real stone paint without the wetting dispersant is obviously reduced.
In comparative example 4 and comparative example 5, when the phase change energy storage material is prepared, butyl stearate and the polyhydric alcohol glycol 200 are not added respectively, the butyl stearate and the polyhydric alcohol glycol 200 have little influence on the heat preservation and insulation performance of the coating, the reduction of comparative example 2 and comparative example 3 is not obvious, the single butyl stearate or glycol 200 also has a certain heat preservation and insulation effect, but the combination of the butyl stearate and the polyhydric alcohol glycol 200 can obviously improve the heat preservation and insulation performance of the phase change energy storage material, so that the heat conductivity coefficient of the coating is reduced.
The phase change energy storage thermal insulation mortar has a different heat transfer mode from the common thermal insulation mortar. The heat energy conduction mode of the common thermal insulation mortar is as follows: the heat absorption-heat resistance-heat conduction-heat dissipation mode of the phase change energy storage thermal insulation mortar is as follows: the method comprises the steps of heat absorption, heat resistance, heat storage, heat release, heat conduction and heat dissipation. Obviously, in the heat conduction process, the phase change energy storage heat preservation mortar increases the heat storage and release processes, so that the heat conduction is greatly hindered, namely, the heat resistance value is increased, and the heat conductivity coefficient is reduced.
Compared with the prior art, the heat-insulating stone-like paint for the building exterior wall has the advantages of good heat-insulating performance, compact coating surface, loose interior, capability of effectively combining waterproof and heat-insulating performances, high thermal stability of the product, excellent performance, 0.017W/(m.k) -0.022W/(m.k) of the heat conductivity coefficient of the paint, and good heat-insulating effect.
According to the heat-insulating stone-like paint for the building outer wall, the quartz sand component is added, the quartz sand with different granularities is compounded to serve as an aggregate component, the sodium carboxymethyl cellulose serving as a binding material is optimized, the stone-like paint simulation performance of the paint is improved, the mechanical properties such as wear resistance, compression resistance and fracture resistance of the paint are improved, and the adhesion of a paint film to a base material is improved.
The invention adds a phase-change energy storage material, kaolin is used as a microcosmic via hole material, organic matters and other impurity components on the surface of the kaolin are removed after the treatment of dilute alkali liquor, kaolin powder with a porous microstructure is formed after further high-temperature calcination, a solid material (a compound solution of polyhydric alcohol, butyl stearate and lecithin) for phase-change energy storage is added, the compound solution flows into holes to form the phase-change energy storage material, and the phase-change energy storage material is homogenized after further heating, so that the compound solution can more uniformly flow into the pore structure of the kaolin to form phase-change energy storage microspheres; the compounding of the polyhydric alcohol and the butyl stearate has better heat absorption and energy storage capacity, and the polyhydric alcohol and the butyl stearate can be mutually dissolved better under the combination action of lecithin, so that better energy storage and heat insulation effects can be exerted;
the coating provided by the invention not only has excellent stone simulation characteristics, but also has stable performance, does not influence the rheological property of the coating, and can obviously improve the decorative effect. And has the advantages of stronger heat preservation and insulation property, fire resistance, waterproof capability, durability, water-based environmental protection and the like compared with the common real stone paint.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The heat-preservation and heat-insulation stone-like paint for the building exterior wall is characterized by comprising the following raw materials in parts by weight: 300 parts of water 200-containing materials, 10-20 parts of sodium carboxymethylcellulose, 2-5 parts of wetting dispersant, 50-70 parts of quartz sand component materials, 30-70 parts of phase change energy storage materials, 2-6 parts of defoaming agent, 10-20 parts of film forming auxiliary agent, 1-3 parts of preservative, 15-30 parts of polymer emulsion and 1-3 parts of silicon dioxide aerogel;
the film-forming auxiliary agent is one of propylene glycol butyl ether and propylene glycol methyl ether acetate;
the phase change energy storage material is obtained by compounding and mixing polyhydric alcohol, butyl stearate and lecithin, adding the mixture into kaolin powder calcined at high temperature, uniformly stirring the mixture, solidifying the mixture, grinding the mixture, heating the mixture to be uniform, continuously cooling and solidifying the mixture, and grinding the mixture;
the polymer emulsion is selected from one or more of polyvinyl acetate emulsion, pure acrylic emulsion, vinyl acetate-acrylic emulsion, styrene-acrylic emulsion, polyurethane emulsion and silicone-acrylic emulsion.
2. The heat-preservation and heat-insulation stone-like paint for the exterior wall of the building as claimed in claim 1, is characterized by comprising the following raw materials in parts by weight: 230-270 parts of water, 12-18 parts of sodium carboxymethylcellulose, 2-4 parts of wetting dispersant, 56-65 parts of quartz sand component, 35-62 parts of phase change energy storage material, 3-5 parts of defoaming agent, 12-16 parts of film forming assistant, 1-2 parts of preservative, 17-27 parts of polymer emulsion and 2-3 parts of silicon dioxide aerogel.
3. The heat-preservation and heat-insulation stone-like paint for the exterior wall of the building as claimed in claim 2, characterized by comprising the following raw materials in parts by weight: 252 parts of water, 16 parts of sodium carboxymethylcellulose, 3 parts of wetting dispersant, 61 parts of quartz sand component, 45 parts of phase change energy storage material, 4 parts of defoaming agent, 14 parts of film forming additive, 1.4 parts of preservative, 21 parts of polymer emulsion and 2.6 parts of silicon dioxide aerogel.
4. The heat-preservation and heat-insulation stone-like paint for the exterior wall of the building as claimed in claim 1, wherein the preparation method of the phase-change energy storage material is as follows:
s1, treatment of kaolin: grinding kaolin, soaking the kaolin in dilute alkali liquor, cleaning with clear water, calcining in a muffle furnace at 1000-1500 ℃ for 3-5h, cooling, taking out, and grinding to 30-80 meshes for later use;
s2, respectively heating and melting the polyhydric alcohol, the butyl stearate and the lecithin, uniformly mixing, keeping a liquid state, adding the mixture into the kaolin powder obtained in the step S1, uniformly stirring, cooling and solidifying, grinding to 30-80 meshes, heating to the temperature of 120-.
5. The heat-insulating stone paint for the exterior wall of the building as claimed in claim 4, wherein the polyol is selected from one or a mixture of polyethylene glycol 200, polyethylene glycol 400, neopentyl glycol, pentaerythritol, trimethylolethane and trimethylolpropane.
6. The heat-preservation and heat-insulation real stone paint for the building exterior wall as claimed in claim 4, wherein the mass ratio of the polyhydric alcohol to the butyl stearate to the lecithin is (3-7): (3-5): 1, the mass ratio of the kaolin to the total mass of the polyhydric alcohol, the butyl stearate and the lecithin is 1: (0.5-0.8), wherein the dilute alkali solution is 0.01-0.1mol/L alkali solution, and the alkali is selected from one or a mixture of NaOH, KOH and barium hydroxide.
7. The heat-preservation and heat-insulation stone paint for the exterior wall of the building as claimed in claim 1, wherein the quartz sand component comprises 20-40 mesh quartz sand, 60-80 mesh quartz sand and 100-120 mesh quartz sand, and the mass ratio is 1: (1-3): (1-2).
8. The heat-insulating stone paint for the exterior wall of the building as claimed in claim 1, wherein the defoaming agent is selected from one or two of mineral oil defoaming agent, aliphatic hydrocarbon and emulsifier mixture defoaming agent which are mixed in any proportion, and the wetting dispersant is selected from one or two of polycarboxylic acid ammonium salt dispersant, nonionic surface active dispersant or anionic surface active dispersant which are mixed in any proportion; the preservative is selected from any one of isothiazolinone, 1, 2-benzisothiazolin-3-one, 2-dibromo-cyanoacetamide and methylene bis thiocyanate or two of the isothiazolinone, the 1, 2-benzisothiazolin-3-one and the 2, 2-dibromo-cyanoacetamide are mixed in any proportion.
9. The preparation method of the heat-preservation and heat-insulation stone-like paint for the building exterior wall as claimed in any one of claims 1 to 8 is characterized by comprising the following steps:
s1, adding sodium carboxymethylcellulose, silicon dioxide aerogel and water with the volume of 3/4 into a container, stirring and slowly heating to 30-50 ℃ at the rotating speed of 100-150r/min, continuously stirring for 3-5h, adding a phase change energy storage material and a wetting dispersant, increasing the rotating speed to 500-300 r/min, continuously adding a quartz sand material after uniformly stirring, and stirring at the original speed for 30-60min to obtain a mixed paint material;
s2, adding the rest water, the polymer emulsion, the defoaming agent, the film forming assistant and the preservative into the other container, homogenizing to obtain a coating emulsion, fully mixing the emulsion and the mixed paint obtained in the step S1, and stirring for 20-30min at 500r/min of 300-.
10. The method for preparing a thermal insulation stone-like paint for an exterior wall of a building as claimed in claim 9, wherein the homogenizing condition is 10000-12000r/min for 1-2 min.
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