CN112662205A - Anti-aging luminous inorganic coating for building exterior wall and preparation method thereof - Google Patents
Anti-aging luminous inorganic coating for building exterior wall and preparation method thereof Download PDFInfo
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Abstract
The invention discloses an anti-aging luminescent inorganic coating for an exterior wall of a building and a preparation method thereof, wherein the anti-aging luminescent inorganic coating for the exterior wall of the building comprises the following raw materials in parts by weight: 20-30 parts of ceramic powder, 10-15 parts of modified epoxy resin, 5-10 parts of hydroxyl silicone oil, 5-15 parts of luminescent powder, 10-15 parts of glass powder, 8.2-20.1 parts of mixed auxiliary agent and 20-40 parts of water; the raw materials of the modified epoxy resin comprise epoxy resin and a polyoxyethylene alkylphenol condensate, and the mixing ratio of the epoxy resin to the polyoxyethylene alkylphenol condensate is (1.5-3): 1. according to the anti-aging luminescent inorganic coating for the building outer wall, the formula of the luminescent coating is improved and optimized, and the anti-aging performance of the coating is favorably improved on the premise of ensuring the luminescent effect of the coating. The preparation method of the anti-aging luminescent inorganic coating for the building exterior wall is simple in steps and strong in operability, and overcomes the defects in the prior art.
Description
Technical Field
The invention relates to the technical field of luminous coatings, in particular to an anti-aging luminous inorganic coating for an exterior wall of a building and a preparation method thereof.
Background
The traditional coating can be used as a decorative material to be applied to the outer wall and the interior of a building, and can also play a role in waterproof protection on the outer surface of the building.
In the building field, the creation of artistic effects of building appearance through light change has been developed as a trend, and as a paint for decorating the outer wall of a building, pigments with different colors are generally added to change the color of the paint, so that different decorative effects are shown under the irradiation of sunlight during the day. However, when natural light disappears, the decorative effect of the traditional paint also disappears, and colors or other artistic shapes cannot be displayed. This means that the conventional decorative coating cannot perform a decorative function at night, and an external light source needs to be artificially manufactured to decorate the outer wall of the building at night.
In order to solve the problem that the traditional coating cannot play a decorative role at night, the existing coating manufacturers put forward luminous coatings. The luminous paint is prepared by adding luminous powder into the traditional paint, can show different decorative effects under the irradiation of sunlight in the daytime, and can naturally emit light with different colors under the action of the luminous powder at night, so that the decorative effect of the paint is enhanced.
However, the main components of the traditional luminous paint for decorating the outer wall are mostly organic matters such as resin, emulsion, alcohol and lipid, and the like, and the paint is easy to age and deteriorate under the long-term action of ultraviolet rays such as sunlight exposure and the like, so that the luminous effect of the paint is easy to influence, the decoration effect of the paint is reduced, the service life is short, and the durability is poor.
Disclosure of Invention
The invention aims to provide an anti-aging luminescent inorganic coating for an exterior wall of a building, which is beneficial to improving the anti-aging performance of the coating on the premise of ensuring the luminescent effect of the coating by improving and optimizing the formula of the luminescent coating.
The invention also aims to provide a preparation method of the anti-aging luminous inorganic coating for the building outer wall, which has simple steps and strong operability and overcomes the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the anti-aging luminescent inorganic coating for the building exterior wall comprises the following raw materials in parts by weight: 20-30 parts of ceramic powder, 10-15 parts of modified epoxy resin, 5-10 parts of hydroxyl silicone oil, 5-15 parts of luminescent powder, 10-15 parts of glass powder, 8.2-20.1 parts of mixed auxiliary agent and 20-40 parts of water;
the raw materials of the modified epoxy resin comprise epoxy resin and a polyoxyethylene alkylphenol condensate, and the mixing ratio of the epoxy resin to the polyoxyethylene alkylphenol condensate is (1.5-3): 1.
preferably, the fineness of the ceramic powder is 100-500 meshes.
Preferably, the fineness of the glass powder is 200-800 meshes.
Preferably, the luminescent powder is strontium aluminate series long afterglow luminescent powder, and the fineness of the luminescent powder is 150-300 meshes.
Preferably, the viscosity of the hydroxyl silicone oil is 60 to 100 mPas.
Preferably, the feed comprises the following raw materials in parts by weight: 20-30 parts of ceramic powder, 10-15 parts of modified epoxy resin, 5-10 parts of hydroxyl silicone oil, 5-15 parts of luminescent powder, 10-15 parts of glass powder, 0.2-0.6 part of anti-settling agent, 1.5-5 parts of dispersing agent, 5-8 parts of curing agent, 0.5-1.5 parts of ultraviolet absorbent, 1-5 parts of antioxidant and 20-40 parts of water.
Preferably, the feed comprises the following raw materials in parts by weight: 25 parts of ceramic powder, 12 parts of modified epoxy resin, 7 parts of hydroxyl silicone oil, 12 parts of luminescent powder, 12 parts of glass powder, 0.4 part of anti-settling agent, 3.5 parts of dispersing agent, 6 parts of curing agent, 1.3 parts of ultraviolet absorbent, 2.6 parts of antioxidant and 33 parts of water.
Preferably, the anti-settling agent is cellulose ether, the dispersing agent is nano silicon dioxide, the curing agent is diethylenetriamine, the ultraviolet absorbent is a UV-O type ultraviolet absorbent, and the antioxidant is an antioxidant 168.
The preparation method of the anti-aging luminous inorganic coating for the building outer wall is used for preparing the anti-aging luminous inorganic coating for the building outer wall and comprises the following steps:
(1) adding the epoxy resin and the polyoxyethylene alkylphenol condensate into a water bath according to the proportion, heating in a water bath and stirring to obtain modified epoxy resin;
(2) mixing and stirring ceramic powder and water according to a ratio to prepare a mixed solution;
(3) adding the anti-settling agent with the formula amount into the mixed solution while stirring, and uniformly stirring to obtain a ceramic mud suspension;
(4) sequentially adding the modified epoxy resin, the hydroxyl silicone oil, the ultraviolet absorbent and the antioxidant in formula amount into the ceramic mud suspension, and uniformly stirring to obtain a coating matrix;
(5) adding the luminescent powder, the glass powder and the dispersing agent in formula amount in the coating matrix in sequence, and stirring uniformly to obtain a semi-finished coating;
(6) and adding the curing agent with the formula amount into the semi-finished paint, and uniformly stirring to obtain the anti-aging luminous inorganic paint for the building exterior wall.
Preferably, the temperature of the water bath heating is 35-45 ℃.
The invention has the beneficial effects that:
1. according to the technical scheme, the inorganic ceramic powder is used as the main solid component of the coating, and compared with the traditional organic coating, the coating has stronger ageing resistance and durability. Meanwhile, the ceramic powder is a byproduct in the production process of the ceramic tile, the technical scheme reasonably utilizes industrial solid waste, relieves the environmental pressure and meets the strategic requirements of national green development;
2. in order to avoid the influence of aging and deterioration of resin organic matters on the luminous effect of the coating, the technical scheme utilizes the polyoxyethylene alkylphenol condensation compound to modify the epoxy resin, and the mixing ratio of the epoxy resin and the polyoxyethylene alkylphenol condensation compound is limited to (1.5-3): 1, the modified epoxy resin can be uniformly dissolved in water to form a stable and uniform coating product, so that the decorative effect of the coating is ensured, the cured coating is ensured not to peel and fall off easily, and the anti-aging performance of the coating is improved;
3. according to the technical scheme, the glass powder is added into the coating, so that the glass powder can be used as a channel material for light transmission in the coating to improve the brightness and afterglow time of the luminescent coating, and can inhibit the volume shrinkage of the coating after curing, avoid the phenomenon that the cured coating is cracked easily due to overlarge volume shrinkage in the coating curing process, and reduce the ageing resistance of the coating;
4. according to the technical scheme, the formula of the luminescent coating is improved and optimized, the fineness of the ceramic powder, the fineness of the luminescent powder and the fineness of the glass powder are further controlled accurately, a synergistic effect is generated among the ceramic powder, the luminescent powder and the glass powder, and the anti-aging performance of the coating is improved on the premise of ensuring the luminescent effect of the coating.
Detailed Description
The luminous paint is prepared by adding luminous powder into the traditional paint, can show different decorative effects under the irradiation of sunlight in the daytime, and can naturally emit light with different colors under the action of the luminous powder at night, so that the decorative effect of the paint is enhanced. As the main components of the traditional luminous paint for decorating the outer wall are mainly organic matters such as resin, emulsion, alcohols and lipids, and the like, the paint is easy to age and deteriorate under the long-term action of ultraviolet rays such as sunlight exposure and the like, so that the luminous effect of the paint is easy to influence, the decoration effect of the paint is reduced, the service life is short, and the durability is poor.
Therefore, the technical scheme provides an anti-aging luminescent inorganic coating for building exterior walls, which comprises the following raw materials in parts by weight: 20-30 parts of ceramic powder, 10-15 parts of modified epoxy resin, 5-10 parts of hydroxyl silicone oil, 5-15 parts of luminescent powder, 10-15 parts of glass powder, 8.2-20.1 parts of mixing aid and 20-40 parts of water.
The technical scheme takes the inorganic ceramic powder as the main solid component of the coating, and has stronger ageing resistance compared with the traditional organic coating. Meanwhile, the ceramic powder is a byproduct in the production process of the ceramic tile, the technical scheme reasonably utilizes industrial solid waste, relieves the environmental pressure and meets the strategic requirements of national green development. According to the technical scheme, the adding amount of the ceramic powder is limited to 20-30 parts, when the adding amount of the ceramic powder is too small, the coating slurry is easy to dilute, so that the glass powder, the luminescent powder and the coating slurry are separated in a layered mode, the coating is not uniform in texture, and the decorative effect of the coating is affected; because the ceramic powder is not transparent, when the addition amount of the ceramic powder in the coating is too much, the light of the luminescent powder can be shielded by the ceramic powder, which easily causes the luminescent effect of the coating to be poor.
The modified epoxy resin mainly has a bonding effect on the coating, when the addition amount of the modified epoxy resin is too small, the bonding property of the coating and the building outer wall is influenced, and the cured coating is easy to peel and fall off; when the addition amount of the modified epoxy resin is too much, the viscosity of the coating is too high, the coating is difficult to apply, and the decorative effect of the coating is not ensured.
Because the resin organic matters are easy to age and deteriorate under the long-term action of ultraviolet rays such as sunlight exposure and the like, in order to avoid the influence of the aging and the deterioration on the luminous effect of the coating, the technical scheme utilizes the polyoxyethylene alkylphenol condensation compound to modify the epoxy resin, and simultaneously, the epoxy resin can form a uniform and stable mixture with water and an organic solvent.
Specifically, the mixing ratio of the epoxy resin to the polyoxyethylene alkylphenol condensate is (1.5-3): 1. if the mixing proportion of the epoxy resin in the modified epoxy resin is too high, the modified epoxy resin is easy to have insufficient hydrophilicity, so that the modified epoxy resin cannot be uniformly dissolved in water, a stable and uniform coating product cannot be formed, and the decorative effect of the coating is influenced; if the mixing proportion of the epoxy resin in the modified epoxy resin is too low, the adhesion of the coating is easily reduced, the adhesion to the building outer wall is reduced, and the cured coating is easy to peel and fall off, which is not beneficial to the realization of the anti-aging performance of the coating. As a preferred example of the present invention, the mixing ratio of the epoxy resin and the polyoxyethylene alkylphenol condensate is 2.2: 1.
the luminescent powder plays a role in luminescence in the coating, and when the addition amount of the luminescent powder is too small, the luminescent effect of the coating is deteriorated; when the addition amount of the luminescent powder is too much, the coating cost is greatly increased, and the popularization and the application of the luminescent coating are not facilitated.
The glass powder is added into the coating, on one hand, the glass powder can be used as a channel material for light transmission in the coating to improve the brightness and afterglow time of the luminescent coating, and on the other hand, the glass powder can inhibit the volume shrinkage of the coating after curing; if the adding proportion of the glass powder in the coating is too low, the internal light transmission effect is small, the brightness and afterglow time of the luminescent coating are not favorably improved, the volume shrinkage of the coating in the curing process is too large, the cured coating is easy to crack, and the ageing resistance of the coating is reduced; if the adding proportion of the glass powder in the coating is too high, the stable and uniform coating product is not easy to form, the decorative effect of the coating is influenced, and the excessive glass powder can also cause the increase of interfaces among solid particles in the coating, so that the strength and the durability of the coating are reduced.
The hydroxyl silicone oil in the raw materials can promote the solid components of the coating to be mutually bonded and form a whole; the addition of water is used for forming coating raw stock with other solid components, and the coating slurry has low fluidity and is viscous when the water amount is too small; too much water will result in slower curing of the coating and will result in cracking of the cured coating and a reduction in the durability of the finished coating. According to the technical scheme, the anti-aging luminescent inorganic coating for the building outer wall is improved and optimized in formula, and is favorable for improving the anti-aging performance of the coating on the premise of ensuring the luminescent effect of the coating.
Further, the fineness of the ceramic powder is 100-500 meshes.
Because the ceramic powder cannot transmit light, the light of the luminescent powder is prevented from being shielded by the ceramic powder, and meanwhile, the ageing resistance of the ceramic powder brought by the luminescent inorganic coating is ensured, and the fineness of the ceramic powder is limited to 100-500 meshes by the technical scheme.
Preferably, the chemical component of the ceramic powder is Al2O3And SiO2And the whiteness value of the ceramic powder is more than 80.
Further, the fineness of the glass powder is 200-800 meshes.
The glass powder of the luminescent inorganic coating in the technical scheme can be used as a channel material for transmitting light inside the coating to improve the brightness and afterglow time of the luminescent coating on one hand, and can inhibit the volume shrinkage of the coating after curing on the other hand. In order to play the two aspects of the action balance of the glass powder, the fineness of the glass powder is limited to 200-800 meshes, if the particles of the glass powder are too coarse, a stable and uniform coating product cannot be formed, the surface of a coated layer is not smooth and uniform after being coated, and the brightness and the afterglow time of the luminous coating are easily influenced; if the particles of the glass powder are too fine, the glass powder has a poor supporting effect on the coating slurry, the volume of the coating after curing is easy to shrink and crack, the realization of ageing resistance is not facilitated, and meanwhile, the glass powder cannot play a good light transmission role.
Further, the luminescent powder is strontium aluminate series long afterglow luminescent powder, and the fineness of the luminescent powder is 150-300 meshes.
In one embodiment of the technical scheme, the luminescent powder adopts strontium aluminate series long afterglow luminescent powder, compared with luminescent materials of other systems, the strontium aluminate series luminescent powder adopted by the technical scheme has good luminescent effect, high brightness, long afterglow time and reasonable price, and is added into a luminescent inorganic coating, thereby being beneficial to wide popularization and application of the coating.
The viscosity of the hydroxy silicone oil is 60 to 100 mPas.
The hydroxyl silicone oil has hydroxyl group content of ten-thousandth to ten-hundred percent and viscosity of ten-thousand mPas. According to the technical scheme, the high-viscosity hydroxyl silicone oil with the viscosity of 60-100 mPa & s is adopted, when the viscosity of the hydroxyl silicone oil is too low, the adhesion among solid components of the coating cannot be met, the solid components of the coating are not bonded with each other to form a whole, and when the viscosity of the hydroxyl silicone oil is too high, the plasticity of the coating is easily reduced, so that the construction difficulty is caused.
Further, the feed comprises the following raw materials in parts by weight: 20-30 parts of ceramic powder, 10-15 parts of modified epoxy resin, 5-10 parts of hydroxyl silicone oil, 5-15 parts of luminescent powder, 10-15 parts of glass powder, 0.2-0.6 part of anti-settling agent, 1.5-5 parts of dispersing agent, 5-8 parts of curing agent, 0.5-1.5 parts of ultraviolet absorbent, 1-5 parts of antioxidant and 20-40 parts of water.
In one embodiment of the present disclosure, the mixing aid includes an anti-settling agent, a dispersant, a curing agent, an ultraviolet absorber, and an antioxidant.
The anti-settling agent is used for preventing the solid components of the paint from separating and ensuring the decorative effect of the paint. The dispersant is used to ensure that the ingredients are uniformly mixed to form a coating product with a uniform texture. The curing agent is used for adjusting the setting and hardening time of the coating and ensuring smooth construction. The ultraviolet absorber and the antioxidant are used for further improving the ageing resistance of the coating and are durable.
Further, the feed comprises the following raw materials in parts by weight: 25 parts of ceramic powder, 12 parts of modified epoxy resin, 7 parts of hydroxyl silicone oil, 12 parts of luminescent powder, 12 parts of glass powder, 0.4 part of anti-settling agent, 3.5 parts of dispersing agent, 6 parts of curing agent, 1.3 parts of ultraviolet absorbent, 2.6 parts of antioxidant and 33 parts of water.
In the research process, the inventor analyzes the corresponding relation between the raw material ratio of the anti-aging luminous inorganic coating for the building outer wall and the decorative effect of the coating, and the result shows that: when the coating raw materials comprise 25 parts of ceramic powder, 12 parts of modified epoxy resin, 7 parts of hydroxyl silicone oil, 12 parts of luminescent powder, 12 parts of glass powder, 0.4 part of anti-settling agent, 3.5 parts of dispersing agent, 6 parts of curing agent, 1.3 parts of ultraviolet absorbent, 2.6 parts of antioxidant and 33 parts of water, the best anti-aging performance and decorative effect are achieved.
Further, the anti-settling agent is cellulose ether, the dispersing agent is nano silicon dioxide, the curing agent is diethylenetriamine, the ultraviolet absorbent is a UV-O type ultraviolet absorbent, and the antioxidant is an antioxidant 168.
The preparation method of the anti-aging luminous inorganic coating for the building outer wall is used for preparing the anti-aging luminous inorganic coating for the building outer wall and comprises the following steps:
(1) adding the epoxy resin and the polyoxyethylene alkylphenol condensate into a water bath according to the proportion, heating in a water bath and stirring to obtain modified epoxy resin;
(2) mixing and stirring ceramic powder and water according to a ratio to prepare a mixed solution;
(3) adding the anti-settling agent with the formula amount into the mixed solution while stirring, and uniformly stirring to obtain a ceramic mud suspension;
(4) sequentially adding the modified epoxy resin, the hydroxyl silicone oil, the ultraviolet absorbent and the antioxidant in formula amount into the ceramic mud suspension, and uniformly stirring to obtain a coating matrix;
(5) adding the luminescent powder, the glass powder and the dispersing agent in formula amount in the coating matrix in sequence, and stirring uniformly to obtain a semi-finished coating;
(6) and adding the curing agent with the formula amount into the semi-finished paint, and uniformly stirring to obtain the anti-aging luminous inorganic paint for the building exterior wall.
The technical scheme also provides a preparation method of the anti-aging luminous inorganic coating for the building outer wall, the steps are simple, the operability is strong, and the problems of low anti-aging performance and single decorative effect of the coating for decorating the building outer wall are solved through relatively simple raw materials and construction processes.
In one embodiment of the technical scheme, the preparation method of the anti-aging luminous inorganic coating for the building exterior wall comprises the following steps:
(1) adding the epoxy resin and the polyoxyethylene alkylphenol condensate into a water bath according to the proportion, heating in a water bath, and stirring for 6-8 min at the rotating speed of 500-700 r/min to prepare the modified epoxy resin;
(2) mixing ceramic powder and water according to a ratio, and stirring at a rotating speed of 500-700 r/min for 1min to prepare a mixed solution;
(3) adding the anti-settling agent with the formula amount into the mixed solution while stirring, and stirring at the rotating speed of 500-700 r/min for 5min to obtain a ceramic mud suspension;
(4) sequentially adding the modified epoxy resin, the hydroxyl silicone oil, the ultraviolet absorbent and the antioxidant in formula amount into the ceramic mud suspension, and stirring at the rotating speed of 500-700 r/min for 5min to obtain a coating matrix;
(5) sequentially adding the luminescent powder, the glass powder and the dispersing agent in a formula amount into a coating substrate, and stirring at the rotating speed of 500-700 r/min for 5min to obtain a semi-finished coating;
(6) adding a curing agent with a formula amount into the semi-finished paint product, and stirring at a rotating speed of 500-700 r/min for 1min to obtain the anti-aging luminous inorganic paint for the building exterior wall.
Further, the temperature of the water bath heating is 35-45 ℃.
In one embodiment of the technical scheme, the water bath heating temperature is limited to 35-45 ℃, and under the condition, the epoxy resin and the polyoxyethylene alkylphenol condensate have high activation energy, so that the phenomenon that the molecular structure is damaged due to overhigh temperature can be avoided, and the epoxy resin can be effectively modified. As a preferred embodiment of the technical scheme, the temperature of the water bath heating is 40 ℃.
The technical solution of the present invention is further explained by the following embodiments.
Example group 1 preparation method of anti-aging luminescent inorganic coating for building exterior wall
(1) Adding epoxy resin and a polyoxyethylene alkylphenol condensation compound into a water bath, heating in a water bath at 40 ℃, and stirring for 6-8 min at a rotating speed of 500-700 r/min to obtain modified epoxy resin; wherein, the mixing ratio of the epoxy resin and the polyoxyethylene alkylphenol condensate is 2.2: 1;
(2) mixing ceramic powder and water according to the formula amount in the following table 1, and stirring at the rotating speed of 500-700 r/min for 1min to prepare a mixed solution; wherein the fineness of the ceramic powder is 500 meshes;
(3) adding cellulose ether with the formula amount shown in the table 1 into the mixed solution while stirring, and stirring at the rotating speed of 500-700 r/min for 5min to obtain a ceramic mud suspension;
(4) sequentially adding modified epoxy resin, hydroxyl silicone oil with the viscosity of 80mPa & s, UV-O type ultraviolet absorbent and antioxidant 168 with the formula amount shown in the following table 1 into the ceramic mud suspension, and stirring at the rotating speed of 500-700 r/min for 5min to obtain a coating matrix;
(5) adding the strontium aluminate series long afterglow luminescent powder, the glass powder and the nano silicon dioxide with the formula amount shown in the following table 1 into a coating matrix in sequence, and stirring for 5min at the rotating speed of 500-700 r/min to obtain a semi-finished coating; wherein, the fineness of the strontium aluminate series long afterglow luminescent powder is 200 meshes, and the fineness of the glass powder is 500 meshes;
(6) adding diethylenetriamine with the formula amount shown in the table 1 in the specification into the semi-finished paint, and stirring at the rotating speed of 500-700 r/min for 1min to obtain the anti-aging luminous inorganic paint for the building exterior wall.
Table 1 raw materials and proportions of different coatings in example group 1
The anti-aging luminescent inorganic coating for the building outer wall is prepared according to the preparation method of the embodiment, and the obtained anti-aging luminescent inorganic coating for the building outer wall is subjected to anti-aging performance test, continuity performance test and illumination intensity test, wherein the specific detection method comprises the following steps:
1. test of anti-aging Performance
Coating the sample coating on a substrate, curing to obtain a sample coating, irradiating for 1000 hours by using a UVC high-power ultraviolet lamp, and observing the surface phenomenon of the sample coating.
2. Durability performance test
Coating the sample coating on a substrate, curing to obtain a sample coating, irradiating the sample coating for 2 hours in natural sunlight, then placing the sample coating in a dark environment, and calculating the time of the sample coating for continuous luminescence.
3. Illumination intensity test
Coating the sample coating on a substrate, curing to obtain a sample coating, irradiating the sample coating for 2 hours in natural sunlight, then placing the sample coating in a dark environment, and measuring the maximum illumination intensity value of the sample coating by using an illuminometer.
The results are shown in Table 2 below:
table 2 results of performance testing of different coatings in example group 1
From examples 1-1 to 1-3, it can be seen that the luminescent inorganic coating prepared by the method for preparing the anti-aging luminescent inorganic coating for the exterior wall of the building has excellent anti-aging performance, can continuously emit light for at least 9.5 hours in a dark environment after being irradiated for 2 hours under natural sunlight, and the maximum illumination intensity value of the luminescent inorganic coating can reach at least 20.5 Lx.
From the examples 1-4 to 1-5, it can be seen that the technical scheme controls the raw material proportion of the luminescent inorganic coating, so that a synergistic effect is generated between the raw materials, and the anti-aging performance of the coating is favorably improved on the premise of ensuring the luminescent effect of the coating. In the research process, the inventor analyzes the corresponding relation between the raw material ratio of the anti-aging luminous inorganic coating for the building outer wall and the decorative effect of the coating, and the result shows that: when the coating raw materials comprise 25 parts of ceramic powder, 12 parts of modified epoxy resin, 7 parts of hydroxyl silicone oil, 12 parts of luminescent powder, 12 parts of glass powder, 0.4 part of anti-settling agent, 3.5 parts of dispersing agent, 6 parts of curing agent, 1.3 parts of ultraviolet absorbent, 2.6 parts of antioxidant and 33 parts of water, the best anti-aging performance and decorative effect are achieved.
Example group 2 preparation method of anti-aging luminescent inorganic coating for building exterior wall
(1) Adding epoxy resin and a polyoxyethylene alkylphenol condensation compound into a water bath, heating in a water bath at 40 ℃, and stirring for 6-8 min at a rotating speed of 500-700 r/min to obtain modified epoxy resin; wherein, the mixing ratio of the epoxy resin and the polyoxyethylene alkylphenol condensate in terms of mass ratio is as shown in the following examples;
(2) mixing 25 parts of ceramic powder and 33 parts of water, and stirring at the rotating speed of 500-700 r/min for 1min to prepare a mixed solution; wherein the fineness of the ceramic powder is 500 meshes;
(3) adding 0.4 part of cellulose ether into the mixed solution while stirring, and stirring at the rotating speed of 500-700 r/min for 5min to obtain a ceramic mud suspension;
(4) adding 12 parts of modified epoxy resin, 7 parts of hydroxyl silicone oil with the viscosity of 80mPa & s, 1.3 parts of UV-O type ultraviolet absorbent and 2.6 parts of antioxidant 168 into the ceramic mud suspension in sequence, and stirring at the rotating speed of 500-700 r/min for 5min to obtain a coating matrix;
(5) adding 12 parts of strontium aluminate series long afterglow luminescent powder, 12 parts of glass powder and 3.5 parts of nano silicon dioxide into a paint matrix in sequence, and stirring for 5min at the rotating speed of 500-700 r/min to obtain a paint semi-finished product; wherein, the fineness of the strontium aluminate series long afterglow luminescent powder is 200 meshes, and the fineness of the glass powder is 500 meshes;
(6) 6 parts of diethylenetriamine is added into the semi-finished paint product, and the mixture is stirred for 1min at the rotating speed of 500-700 r/min to obtain the anti-aging luminous inorganic paint for the building exterior wall.
Example 2-1: the mixing ratio of the epoxy resin and the polyoxyethylene alkylphenol condensate is 3: 0;
example 2-2: the mixing ratio of the epoxy resin and the polyoxyethylene alkylphenol condensate is 1: 1;
examples 2 to 3: the mixing ratio of the epoxy resin and the polyoxyethylene alkylphenol condensate is 1.5: 1;
examples 2 to 4: the mixing ratio of the epoxy resin and the polyoxyethylene alkylphenol condensate is 3: 1;
examples 2 to 5: the mixing ratio of the epoxy resin and the polyoxyethylene alkylphenol condensate is 5: 1;
the anti-aging luminescent inorganic coating for the building outer wall is prepared according to the preparation method of the embodiment, and the obtained anti-aging luminescent inorganic coating for the building outer wall is subjected to an anti-aging performance test, a persistence performance test and an illumination intensity test, and the results are shown in the following table 3:
table 3 results of performance testing of different coatings in example group 2
From the experimental results of the example group 2, it can be seen that if the mixing ratio of the epoxy resin in the modified epoxy resin is too high, the modified epoxy resin is easily lack of hydrophilicity, so that the modified epoxy resin cannot be uniformly dissolved in water, a stable and uniform coating product cannot be formed, and the decorative effect of the coating is affected; if the mixing proportion of the epoxy resin in the modified epoxy resin is too low, the adhesion of the coating is easily reduced, the adhesion to the building outer wall is reduced, and the cured coating is easy to peel and fall off, which is not beneficial to the realization of the anti-aging performance of the coating.
Example group 3 preparation method of anti-aging luminescent inorganic coating for building exterior wall
(1) Adding epoxy resin and a polyoxyethylene alkylphenol condensation compound into a water bath, heating in a water bath at 40 ℃, and stirring for 6-8 min at a rotating speed of 500-700 r/min to obtain modified epoxy resin; wherein, the mixing ratio of the epoxy resin and the polyoxyethylene alkylphenol condensate is 2.2: 1;
(2) mixing 25 parts of ceramic powder and 33 parts of water, and stirring at the rotating speed of 500-700 r/min for 1min to prepare a mixed solution; wherein the fineness of the ceramic powder is shown in the following examples;
(3) adding 0.4 part of cellulose ether into the mixed solution while stirring, and stirring at the rotating speed of 500-700 r/min for 5min to obtain a ceramic mud suspension;
(4) adding 12 parts of modified epoxy resin, 7 parts of hydroxyl silicone oil with the viscosity of 80mPa & s, 1.3 parts of UV-O type ultraviolet absorbent and 2.6 parts of antioxidant 168 into the ceramic mud suspension in sequence, and stirring at the rotating speed of 500-700 r/min for 5min to obtain a coating matrix;
(5) adding 12 parts of strontium aluminate series long afterglow luminescent powder, 12 parts of glass powder and 3.5 parts of nano silicon dioxide into a paint matrix in sequence, and stirring for 5min at the rotating speed of 500-700 r/min to obtain a paint semi-finished product; wherein, the fineness of the strontium aluminate series long afterglow luminescent powder and the glass powder is shown in the following examples;
(6) 6 parts of diethylenetriamine is added into the semi-finished paint product, and the mixture is stirred for 1min at the rotating speed of 500-700 r/min to obtain the anti-aging luminous inorganic paint for the building exterior wall.
Table 4 raw material fineness of different coatings in example group 3
| Fineness of raw materials (mesh) | Ceramic powder | Luminous powder (strontium aluminate series) | Glass powder |
| Example 3-1 | 50 | 200 | 500 |
| Examples 3 to 2 | 600 | 200 | 500 |
| Examples 3 to 3 | 500 | 200 | 100 |
| Example 3-4 | 500 | 200 | 1000 |
| Examples 3 to 5 | 50 | 200 | 100 |
| Examples 3 to 6 | 600 | 200 | 1000 |
| Examples 3 to 7 | 50 | 100 | 100 |
| Examples 3 to 8 | 600 | 500 | 1000 |
The anti-aging luminescent inorganic coating for the building outer wall is prepared according to the preparation method of the embodiment, and the obtained anti-aging luminescent inorganic coating for the building outer wall is subjected to an anti-aging performance test, a persistence performance test and an illumination intensity test, and the results are shown in the following table 5:
table 5 results of performance testing of different coatings in example set 3
| Performance testing | Anti-aging performance | Sustainability Performance (h) | Luminous intensity (Lx) |
| Example 3-1 | The coating does not turn yellow | 8 | 13.8 |
| Examples 3 to 2 | Yellowing of coatings | 9.1 | 17.9 |
| Examples 3 to 3 | Peeling of the coating | 8.7 | 16.9 |
| Examples 3 to 4 | Coating peeling off | 8.3 | 15.4 |
| Examples 3 to 5 | Peeling of the coating | 7.7 | 11.8 |
| Examples 3 to 6 | Yellowing and peeling off of coating | 8.5 | 16.5 |
| Examples 3 to 7 | Peeling of the coating | 7.9 | 13.2 |
| Examples 3 to 8 | Yellowing and peeling off of coating | 8.2 | 14 |
From the experimental results of example group 3, it can be seen that the fineness of the ceramic powder affects the light transmission of the luminescent powder; the glass powder can be used as a channel material for light transmission in the coating to improve the brightness and afterglow time of the luminescent coating, and can inhibit the volume shrinkage of the coating after curing; the fineness of the luminescent powder influences the brightness and afterglow time of the luminescent inorganic paint. According to the technical scheme, the fineness of the ceramic powder, the fineness of the luminescent powder and the fineness of the glass powder are jointly and accurately controlled, a synergistic effect is generated among the ceramic powder, the luminescent powder and the glass powder, and the anti-aging performance of the coating is favorably improved on the premise of ensuring the luminescent effect of the coating.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (10)
1. The anti-aging luminous inorganic coating for the building exterior wall is characterized by comprising the following raw materials in parts by weight: 20-30 parts of ceramic powder, 10-15 parts of modified epoxy resin, 5-10 parts of hydroxyl silicone oil, 5-15 parts of luminescent powder, 10-15 parts of glass powder, 8.2-20.1 parts of mixed auxiliary agent and 20-40 parts of water;
the raw materials of the modified epoxy resin comprise epoxy resin and a polyoxyethylene alkylphenol condensate, and the mixing ratio of the epoxy resin to the polyoxyethylene alkylphenol condensate is (1.5-3): 1.
2. the anti-aging luminescent inorganic coating for the exterior wall of the building as claimed in claim 1, wherein: the fineness of the ceramic powder is 100-500 meshes.
3. The anti-aging luminescent inorganic coating for the exterior wall of the building as claimed in claim 1, wherein: the fineness of the glass powder is 200-800 meshes.
4. The anti-aging luminescent inorganic coating for the exterior wall of the building as claimed in claim 1, wherein: the luminescent powder is strontium aluminate series long afterglow luminescent powder, and the fineness of the luminescent powder is 150-300 meshes.
5. The anti-aging luminescent inorganic coating for the exterior wall of the building as claimed in claim 1, wherein: the viscosity of the hydroxyl silicone oil is 60-100 mPa.
6. The anti-aging luminescent inorganic coating for the exterior wall of the building as claimed in claim 1, which comprises the following raw materials in parts by weight: 20-30 parts of ceramic powder, 10-15 parts of modified epoxy resin, 5-10 parts of hydroxyl silicone oil, 5-15 parts of luminescent powder, 10-15 parts of glass powder, 0.2-0.6 part of anti-settling agent, 1.5-5 parts of dispersing agent, 5-8 parts of curing agent, 0.5-1.5 parts of ultraviolet absorbent, 1-5 parts of antioxidant and 20-40 parts of water.
7. The anti-aging luminescent inorganic coating for the exterior wall of the building as claimed in claim 7, which is characterized by comprising the following raw materials in parts by weight: 25 parts of ceramic powder, 12 parts of modified epoxy resin, 7 parts of hydroxyl silicone oil, 12 parts of luminescent powder, 12 parts of glass powder, 0.4 part of anti-settling agent, 3.5 parts of dispersing agent, 6 parts of curing agent, 1.3 parts of ultraviolet absorbent, 2.6 parts of antioxidant and 33 parts of water.
8. The anti-aging luminescent inorganic coating for the exterior wall of the building as claimed in claim 7, wherein: the anti-settling agent is cellulose ether, the dispersing agent is nano silicon dioxide, the curing agent is diethylenetriamine, the ultraviolet absorbent is a UV-O type ultraviolet absorbent, and the antioxidant is an antioxidant 168.
9. The preparation method of the anti-aging luminescent inorganic coating for the building exterior wall is characterized by being used for preparing the anti-aging luminescent inorganic coating for the building exterior wall as claimed in any one of claims 6 to 8, and comprising the following steps:
(1) adding the epoxy resin and the polyoxyethylene alkylphenol condensate into a water bath according to the proportion, heating in a water bath and stirring to obtain modified epoxy resin;
(2) mixing and stirring ceramic powder and water according to a ratio to prepare a mixed solution;
(3) adding the anti-settling agent with the formula amount into the mixed solution while stirring, and uniformly stirring to obtain a ceramic mud suspension;
(4) sequentially adding the modified epoxy resin, the hydroxyl silicone oil, the ultraviolet absorbent and the antioxidant in formula amount into the ceramic mud suspension, and uniformly stirring to obtain a coating matrix;
(5) adding the luminescent powder, the glass powder and the dispersing agent in formula amount in the coating matrix in sequence, and stirring uniformly to obtain a semi-finished coating;
(6) and adding the curing agent with the formula amount into the semi-finished paint, and uniformly stirring to obtain the anti-aging luminous inorganic paint for the building exterior wall.
10. The preparation method of the anti-aging luminescent inorganic coating for the exterior wall of the building as claimed in claim 9, wherein: the temperature of the water bath heating is 35-45 ℃.
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| CN113717564A (en) * | 2021-09-01 | 2021-11-30 | 广东青筑科技有限公司 | Double-component luminous decorative material |
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