CN112457728A - Nano waterproof material for building and preparation method thereof - Google Patents

Nano waterproof material for building and preparation method thereof Download PDF

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Publication number
CN112457728A
CN112457728A CN202011376287.XA CN202011376287A CN112457728A CN 112457728 A CN112457728 A CN 112457728A CN 202011376287 A CN202011376287 A CN 202011376287A CN 112457728 A CN112457728 A CN 112457728A
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nano
parts
stirring
waterproof material
diatomite
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张钦刚
肖飞
周超
张玉明
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Weifang University of Science and Technology
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Weifang University of Science and Technology
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/66—Additives characterised by particle size
    • C09D7/67—Particle size smaller than 100 nm
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Nanotechnology (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Paints Or Removers (AREA)

Abstract

The invention provides a nano waterproof material for buildings and a preparation method thereof, relating to the technical field of building materials. A nano waterproof material for buildings comprises the following components: acrylic resin, silicone-acrylate emulsion, dodecyl alcohol ester, diatomite, nano titanium dioxide, nano silicon micropowder, a dispersing agent, a defoaming agent, a bactericide and water; the material has excellent waterproof performance and long service life. In addition, the invention also provides a preparation method of the nano waterproof material for the building, which comprises the following steps: preparing mixed emulsion, mixing filler and auxiliary agent, and preparing finished products; the method has simple process, and the prepared product has good waterproof performance and long service life.

Description

Nano waterproof material for building and preparation method thereof
Technical Field
The invention relates to the technical field of building materials, in particular to a nano waterproof material for buildings and a preparation method thereof.
Background
The waterproof problem of the building not only relates to the working and living environment of people, but also influences the service life of the building. With the rapid development of national economy, the engineering construction of China is also developed vigorously, particularly the construction of various projects such as houses, sports facilities, road traffic and the like, the material condition is provided for improving the living standard of people, the waterproof and corrosion-resistant problems of various engineering constructions are solved, the project construction party is concerned most, the technical difficulty is overcome, the technological progress is required to be overcome, and advanced technologies including the application of new materials are adopted.
Earlier people used felt and asphalt as waterproof materials, but the use of the materials not only makes construction very difficult, but also has poor waterproof performance and short service life.
Disclosure of Invention
The invention aims to provide a nano waterproof material for buildings, which has excellent waterproof performance and long service life.
The invention also aims to provide a preparation method of the nano waterproof material for the building, the method has simple process, and the prepared product has good waterproof performance and long service life.
The technical problem to be solved by the invention is realized by adopting the following technical scheme.
In one aspect, an embodiment of the present invention provides a nano waterproof material for a building, which includes the following components: acrylic resin, silicone-acrylic emulsion, dodecyl alcohol ester, diatomite, nano titanium dioxide, nano silicon micropowder, a dispersing agent, a defoaming agent, a bactericide and water.
On the other hand, the embodiment of the invention provides a preparation method of a nano waterproof material for buildings, which comprises the following steps:
preparing a mixed emulsion: mixing acrylic resin and silicone-acrylate emulsion, then dropwise adding dodecyl alcohol ester while stirring, and obtaining mixed emulsion after the stirring reaction is finished;
mixing the filler and the auxiliary agent: sieving diatomite, putting the sieved diatomite, nano titanium dioxide and nano silicon powder into a stirrer, adding 5-10 parts of water, adding a dispersing agent, a defoaming agent, a bactericide and the rest water while stirring, and stirring and mixing to obtain a filler aid;
and (3) preparing a finished product: and mixing the mixed emulsion with a filler aid, and stirring for reaction to obtain a finished product.
Compared with the prior art, the embodiment of the invention has at least the following advantages or beneficial effects:
aiming at the first aspect, the embodiment of the invention provides a nano waterproof material for buildings, which comprises the following components: acrylic resin, silicone-acrylic emulsion, dodecyl alcohol ester, diatomite, nano titanium dioxide, nano silicon micropowder, a dispersing agent, a defoaming agent, a bactericide and water.
In the embodiment, the acrylic resin and the silicone-acrylate emulsion are used as material matrixes, wherein the acrylic resin has good light and color retention, water and chemical resistance, is quick to dry and convenient to construct, and is easy to construct, recoat and rework; the silicone-acrylate emulsion has excellent waterproof, corrosion-resistant and stain-resistant performances, is high in weather resistance and is beneficial to prolonging the service life. The dodecyl alcohol ester can be used as a film forming aid, can enhance the adhesion of the material, assist in film forming and improve the stability of the material, thereby further enhancing the waterproof performance of the material and prolonging the service life. The diatomite is used as a filler, can adsorb harmful substances such as formaldehyde and the like, and can achieve the effects of dehumidifying, deodorizing and reducing pollution. The nano titanium dioxide can play the roles of antibiosis, moisture prevention, water prevention and corrosion resistance, can effectively prolong the service life of the material and enhance the waterproof performance. The nanometer silicon powder can effectively enhance the strength of the material, improve the waterproof performance and the heat preservation performance, can also improve the wear resistance, the smoothness and the ageing resistance of the material, and is beneficial to enhancing the service life of the material. The dispersing agent can prevent the material particles from settling and flocculating, can improve the leveling property of the material particles, improves the stability of the material, contributes to further enhancing the waterproof property of the material, and prolongs the service life of the material. The defoaming agent can eliminate bubbles generated in the production process of the material, so that the adhesive force and the use strength of the product material are improved, and the stability of the material is improved. The bactericide can enhance the mildew-proof and corrosion-proof performance of the material, protect the material from bacterial pollution, and contribute to improving the quality of the product material, thereby further enhancing the waterproof performance and prolonging the service life.
Aiming at the second aspect, the embodiment of the invention provides a preparation method of a nano waterproof material for buildings, which comprises the following steps: preparing mixed emulsion, mixing filler and auxiliary agent, and preparing finished products.
In the embodiment, firstly, the acrylic resin and the silicone-acrylic emulsion are mixed through the preparation step of the mixed emulsion, and the dodecyl alcohol ester is dropwise added while stirring, so that the components are better mixed together, the texture of the mixed emulsion is more uniform, the components can better exert the effects, the waterproof performance of the product material is further improved, and the service life of the material is prolonged. The filler aid is prepared through the filler aid mixing step, and the particle size of the diatomite can be controlled through sieving the diatomite, so that the diatomite is favorably combined with other components, the dehumidification and deodorization effects of the diatomite are favorably enhanced, and the pollution is reduced; part of water is added firstly, then the dispersant, the defoamer, the bactericide and the rest water are added while stirring, so that the components can be dissolved and combined better, the effects of the components can be better exerted, the synergy is realized, the waterproof performance of the product material is further enhanced, and the service life of the product material is prolonged. And finally, mixing the prepared mixed emulsion with a filler aid through the finished product preparation steps, and stirring for reaction to obtain a finished product. The whole preparation method is simple in process, and the prepared product material is good in waterproof performance and long in service life.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to specific examples.
The embodiment of the invention provides a nano waterproof material for buildings, which comprises the following components: acrylic resin, silicone-acrylic emulsion, dodecyl alcohol ester, diatomite, nano titanium dioxide, nano silicon micropowder, a dispersing agent, a defoaming agent, a bactericide and water.
In the embodiment, the acrylic resin and the silicone-acrylate emulsion are used as material matrixes, wherein the acrylic resin has good light and color retention, water and chemical resistance, is quick to dry and convenient to construct, and is easy to construct, recoat and rework; the silicone-acrylate emulsion has excellent waterproof, corrosion-resistant and stain-resistant performances, is high in weather resistance and is beneficial to prolonging the service life. The dodecyl alcohol ester can be used as a film forming aid, can enhance the adhesion of the material, assist in film forming and improve the stability of the material, thereby further enhancing the waterproof performance of the material and prolonging the service life. The diatomite is used as a filler, can adsorb harmful substances such as formaldehyde and the like, and can achieve the effects of dehumidifying, deodorizing and reducing pollution. The nano titanium dioxide can play the roles of antibiosis, moisture prevention, water prevention and corrosion resistance, can effectively prolong the service life of the material and enhance the waterproof performance. The nanometer silicon powder can effectively enhance the strength of the material, improve the waterproof performance and the heat preservation performance, can also improve the wear resistance, the smoothness and the ageing resistance of the material, and is beneficial to enhancing the service life of the material. The dispersing agent can prevent the material particles from settling and flocculating, can improve the leveling property of the material particles, improves the stability of the material, contributes to further enhancing the waterproof property of the material, and prolongs the service life of the material. The defoaming agent can eliminate bubbles generated in the production process of the material, so that the adhesive force and the use strength of the product material are improved, and the stability of the material is improved. The bactericide can enhance the mildew-proof and corrosion-proof performance of the material, protect the material from bacterial pollution, and contribute to improving the quality of the product material, thereby further enhancing the waterproof performance and prolonging the service life.
Further, in some embodiments of the present invention, the components in parts by weight are: 50-80 parts of acrylic resin, 30-40 parts of silicone-acrylic emulsion, 0.5-2 parts of dodecyl alcohol ester, 10-20 parts of diatomite, 10-20 parts of nano titanium dioxide, 1-10 parts of nano silicon powder, 0.5-1 part of dispersant, 0.5-1 part of defoaming agent, 0.2-1 part of bactericide and 15-30 parts of water.
In the embodiment, the components are favorably combined by controlling the weight parts of the components, so that the components have synergistic interaction, and the material performance cannot be influenced due to improper component distribution ratio, thereby further enhancing the waterproof performance of the product material, improving the quality of the product material and further prolonging the service life.
Further, in some embodiments of the present invention, the components in parts by weight are: 70 parts of acrylic resin, 30 parts of silicone-acrylate emulsion, 1.2 parts of dodecyl alcohol ester, 15 parts of diatomite, 15 parts of nano titanium dioxide, 8 parts of nano silicon micropowder, 0.5 part of dispersing agent, 0.6 part of defoaming agent, 0.5 part of bactericide and 20 parts of water.
In the embodiment, the components are combined together favorably by controlling the weight parts of the components, so that the components are synergistic, the material performance cannot be influenced due to improper component distribution ratio, the waterproof performance of the product material is further enhanced, the product material quality is improved, and the service life is prolonged better.
Further, in some embodiments of the present invention, in the composition, the particle size of the nano titanium dioxide is 5 to 25nm, and the particle size of the nano silica powder is 30 to 60 nm.
In the embodiment, the particle size of the nano titanium dioxide and the nano silicon micro powder is controlled, so that the nano titanium dioxide can better exert the effects of antibiosis, moisture resistance, water resistance and corrosion resistance, the nano silicon micro powder can better exert the strength of a reinforcing material, the waterproof performance and the heat insulation performance are improved, and the effects of wear resistance, smoothness and ageing resistance of the material are improved. The quality of the product material can be better improved, the waterproof performance of the product material is further enhanced, and the service life of the product material is prolonged.
Further, in some embodiments of the present invention, the defoaming agent is a silicone-type defoaming agent or a polyether-modified silicone-type defoaming agent.
In the embodiment, the organic silicon type defoaming agent or the polyether modified organic silicon type defoaming agent is selected, so that bubbles generated in the production process of the product material can be better eliminated, the adhesion and the use strength of the material are further improved, the stability of the material is improved, the waterproof performance of the material is further improved, and the service life of the material is prolonged.
The embodiment of the invention also provides a preparation method of the nano waterproof material for the building, which comprises the following steps:
preparing a mixed emulsion: mixing acrylic resin and silicone-acrylate emulsion, then dropwise adding dodecyl alcohol ester while stirring, and obtaining mixed emulsion after the stirring reaction is finished;
mixing the filler and the auxiliary agent: sieving diatomite, putting the sieved diatomite, nano titanium dioxide and nano silicon powder into a stirrer, adding 5-10 parts of water, adding a dispersing agent, a defoaming agent, a bactericide and the rest water while stirring, and stirring and mixing to obtain a filler aid;
and (3) preparing a finished product: and mixing the mixed emulsion with a filler aid, and stirring for reaction to obtain a finished product.
In the embodiment, firstly, the acrylic resin and the silicone-acrylic emulsion are mixed through the preparation step of the mixed emulsion, and the dodecyl alcohol ester is dropwise added while stirring, so that the components are better mixed together, the texture of the mixed emulsion is more uniform, the components can better exert the effects, the waterproof performance of the product material is further improved, and the service life of the material is prolonged. The filler aid is prepared through the filler aid mixing step, and the particle size of the diatomite can be controlled through sieving the diatomite, so that the diatomite is favorably combined with other components, the dehumidification and deodorization effects of the diatomite are favorably enhanced, and the pollution is reduced; part of water is added firstly, then the dispersant, the defoamer, the bactericide and the rest water are added while stirring, so that the components can be dissolved and combined better, the effects of the components can be better exerted, the synergy is realized, the waterproof performance of the product material is further enhanced, and the service life of the product material is prolonged. And finally, mixing the prepared mixed emulsion with a filler aid through the finished product preparation steps, and stirring for reaction to obtain a finished product. The whole preparation method is simple in process, and the prepared product material is good in waterproof performance and long in service life.
Further, in some embodiments of the present invention, in the step of preparing the mixed emulsion, the dodecanol ester is added dropwise while stirring at 60-80 ℃ and at a stirring speed of 1000-2000rpm for 45-90 min.
In the embodiment, by controlling the temperature, the stirring speed and the reaction time, the components can be better reacted and combined together, so that the beneficial effects of the components are fully exerted, the influence on the product quality due to the improper temperature, stirring speed and reaction time is avoided, the waterproof performance of the product material is further improved, and the service life is prolonged.
Further, in some embodiments of the present invention, in the above filler aid mixing step, the diatomaceous earth is sieved through a 300-1000 mesh sieve.
In the embodiment, the particle size of the diatomite is controlled by sieving the diatomite with a sieve of 300-1000 meshes, so that the diatomite can better adsorb harmful substances such as formaldehyde and the like, and the effects of dehumidification, deodorization and pollution reduction of the diatomite are better exerted.
Further, in some embodiments of the present invention, in the above filler aid mixing step, stirring is performed at 1000-2000rpm for 45-90min at 60-80 ℃.
In the embodiment, by controlling the temperature, the stirring speed and the stirring time, the components can be better reacted and combined together, so that the beneficial effects of the components are fully exerted, the influence on the product quality due to the improper temperature, stirring speed and stirring time is avoided, the waterproof performance of the product material is further improved, and the service life is prolonged.
Further, in some embodiments of the present invention, in the step of preparing the final product, the final product is obtained by stirring and reacting at 60-80 ℃ and a stirring rate of 1000-2000rpm for 60-120 min.
In the embodiment, by controlling the temperature, the stirring speed and the stirring time, the components can be further reacted and combined together, so that the beneficial effects of the components are more fully exerted, the influence on the product quality due to the improper temperature, stirring speed and stirring time is avoided, the waterproof performance of the product material is further improved, and the service life of the product material is further prolonged.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
The embodiment of the invention provides a nano waterproof material for buildings, which is prepared by the following steps:
preparing a mixed emulsion: mixing 50g of acrylic resin with 30g of silicone-acrylic emulsion, then dropwise adding 0.5g of dodecyl alcohol ester at the temperature of 60-80 ℃ while stirring, wherein the stirring speed is 1000rpm, reacting for 45min, and obtaining mixed emulsion after the stirring reaction is finished;
mixing the filler and the auxiliary agent: taking 10g of diatomite, sieving the diatomite by a 300-mesh sieve, then putting the diatomite, 10g of nano titanium dioxide with the particle size of 25nm and 1g of nano silicon powder with the particle size of 60nm into a stirrer, firstly adding 5g of water, adding 0.5g of dispersing agent, 0.5g of defoaming agent, 0.2g of bactericide and the rest 10g of water at the temperature of 60 ℃ while stirring, stirring for 45min at 1000rpm, and stirring and mixing to obtain a filler aid;
and (3) preparing a finished product: and mixing the mixed emulsion with a filler additive, and stirring and reacting at 60 ℃ and a stirring speed of 1000rpm for 60min to obtain a finished product.
Example 2
The embodiment of the invention provides a nano waterproof material for buildings, which is prepared by the following steps:
preparing a mixed emulsion: mixing 80g of acrylic resin with 40g of silicone-acrylic emulsion, then dropwise adding 2g of dodecyl alcohol ester at the temperature of 60-80 ℃ while stirring, wherein the stirring speed is 2000rpm, reacting for 90min, and obtaining mixed emulsion after the stirring reaction is finished;
mixing the filler and the auxiliary agent: taking 20g of diatomite, sieving the diatomite by a 1000-mesh sieve, then putting the diatomite, 20g of nano titanium dioxide with the particle size of 5nm and 10g of nano silica powder with the particle size of 30nm into a stirrer, firstly adding 10g of water, adding 1g of dispersing agent, 1g of defoaming agent, 1g of bactericide and the rest 20g of water at 80 ℃ while stirring, stirring for 90min at 2000rpm, and stirring and mixing to obtain a filler aid;
and (3) preparing a finished product: and mixing the mixed emulsion with a filler additive, and stirring and reacting at 80 ℃ and a stirring speed of 2000rpm for 120min to obtain a finished product.
Example 3
The embodiment of the invention provides a nano waterproof material for buildings, which is prepared by the following steps:
preparing a mixed emulsion: mixing 65g of acrylic resin with 35g of silicone-acrylic emulsion, then dropwise adding 1g of dodecyl alcohol ester at 70 ℃ while stirring, wherein the stirring speed is 1500rpm, reacting for 60min, and obtaining mixed emulsion after the stirring reaction is finished;
mixing the filler and the auxiliary agent: taking 15g of diatomite, sieving the diatomite by a 600-mesh sieve, then putting the diatomite, 15g of nano titanium dioxide with the particle size of 15nm and 5g of nano silica powder with the particle size of 50nm into a stirrer, firstly adding 10g of water, adding 0.7g of dispersing agent, 0.7g of defoaming agent, 0.7g of bactericide and the rest 15 of water at 70 ℃ while stirring, stirring for 60min at 1500rpm, and stirring and mixing to obtain a filler aid;
and (3) preparing a finished product: and mixing the mixed emulsion with a filler additive, and stirring and reacting for 90min at the stirring speed of 1500rpm at 70 ℃ to obtain a finished product.
Example 4
The embodiment of the invention provides a nano waterproof material for buildings, which is prepared by the following steps:
preparing a mixed emulsion: mixing 60g of acrylic resin with 35g of silicone-acrylic emulsion, then dropwise adding 1.5g of dodecyl alcohol ester at 65 ℃ while stirring, wherein the stirring speed is 1700rpm, reacting for 50min, and obtaining mixed emulsion after the stirring reaction is finished;
mixing the filler and the auxiliary agent: taking 12g of diatomite, sieving the diatomite by a 700-mesh sieve, then putting the diatomite, 12g of nano titanium dioxide with the particle size of 15nm and 8g of nano silica powder with the particle size of 40nm into a stirrer, firstly adding 10g of water, adding 0.5g of dispersing agent, 1g of defoaming agent, 0.5g of bactericide and the rest 10g of water at 75 ℃ while stirring, stirring for 50min at 1700rpm, and stirring and mixing to obtain a filler aid;
and (3) preparing a finished product: and mixing the mixed emulsion with a filler additive, and stirring and reacting at the stirring speed of 1700rpm for 100min at 65 ℃ to obtain a finished product.
Example 5
The embodiment of the invention provides a nano waterproof material for buildings, which is prepared by the following steps:
preparing a mixed emulsion: mixing 70g of acrylic resin with 30g of silicone-acrylic emulsion, then dropwise adding 1.2g of dodecyl alcohol ester at 65 ℃ while stirring, wherein the stirring speed is 1200rpm, reacting for 60min, and obtaining mixed emulsion after the stirring reaction is finished;
mixing the filler and the auxiliary agent: taking 15g of diatomite, sieving the diatomite by a 500-mesh sieve, then putting the diatomite, 15g of nano titanium dioxide with the particle size of 20nm and 8g of nano silica powder with the particle size of 50nm into a stirrer, firstly adding 10g of water, adding 0.5g of dispersing agent, 0.5g of defoaming agent, 0.5g of bactericide and the rest 10g of water at 65 ℃ while stirring, stirring for 60min at 1200rpm, and stirring and mixing to obtain a filler aid;
and (3) preparing a finished product: and mixing the mixed emulsion with a filler additive, and stirring and reacting for 90min at the temperature of 65 ℃ and the stirring speed of 1200rpm to obtain a finished product.
Test examples
The performance of the nano waterproof material for buildings provided by embodiment 5 of the invention is tested, and the test results are shown in table 1:
TABLE 1
Figure BDA0002808285550000111
According to the detection result, the using strength and the waterproofness of the nano waterproof material for the building can reach the indexes, and the nano waterproof material for the building has good waterproof performance and long service life.
In summary, in the nano waterproof material for buildings and the preparation method thereof provided by the embodiment of the invention, acrylic resin and silicone-acrylate emulsion are used as material matrixes, wherein the acrylic resin has good light and color retention, water and chemical resistance, is fast to dry, is convenient to construct, and is easy to re-coat and rework during construction; the silicone-acrylate emulsion has excellent waterproof, corrosion-resistant and stain-resistant performances, is high in weather resistance and is beneficial to prolonging the service life. The dodecyl alcohol ester can be used as a film forming aid, can enhance the adhesion of the material, assist in film forming and improve the stability of the material, thereby further enhancing the waterproof performance of the material and prolonging the service life. The diatomite is used as a filler, can adsorb harmful substances such as formaldehyde and the like, and can achieve the effects of dehumidifying, deodorizing and reducing pollution. The nano titanium dioxide can play the roles of antibiosis, moisture prevention, water prevention and corrosion resistance, can effectively prolong the service life of the material and enhance the waterproof performance. The nanometer silicon powder can effectively enhance the strength of the material, improve the waterproof performance and the heat preservation performance, can also improve the wear resistance, the smoothness and the ageing resistance of the material, and is beneficial to enhancing the service life of the material. The dispersing agent can prevent the material particles from settling and flocculating, can improve the leveling property of the material particles, improves the stability of the material, contributes to further enhancing the waterproof property of the material, and prolongs the service life of the material. The defoaming agent can eliminate bubbles generated in the production process of the material, so that the adhesive force and the use strength of the product material are improved, and the stability of the material is improved. The bactericide can enhance the mildew-proof and corrosion-proof performance of the material, protect the material from bacterial pollution, and contribute to improving the quality of the product material, thereby further enhancing the waterproof performance and prolonging the service life. According to the preparation method, the acrylic resin and the silicone-acrylate emulsion are mixed through the preparation steps of the mixed emulsion, and the dodecyl alcohol ester is dropwise added while stirring, so that the components are better mixed together, the texture of the mixed emulsion is more uniform, the components can better exert the effects, the waterproof performance of the product material is further improved, and the service life of the material is prolonged. The filler aid is prepared through the filler aid mixing step, and the particle size of the diatomite can be controlled through sieving the diatomite, so that the diatomite is favorably combined with other components, the dehumidification and deodorization effects of the diatomite are favorably enhanced, and the pollution is reduced; part of water is added firstly, then the dispersant, the defoamer, the bactericide and the rest water are added while stirring, so that the components can be dissolved and combined better, the effects of the components can be better exerted, the synergy is realized, the waterproof performance of the product material is further enhanced, and the service life of the product material is prolonged. And finally, mixing the prepared mixed emulsion with a filler aid through the finished product preparation steps, and stirring for reaction to obtain a finished product. The whole preparation method is simple in process, and the prepared product material is good in waterproof performance and long in service life.
The embodiments described above are some, but not all embodiments of the invention. The detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. 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.

Claims (10)

1. The nano waterproof material for the building is characterized by comprising the following components: acrylic resin, silicone-acrylic emulsion, dodecyl alcohol ester, diatomite, nano titanium dioxide, nano silicon micropowder, a dispersing agent, a defoaming agent, a bactericide and water.
2. The nano waterproof material for the building as claimed in claim 1, wherein the components in parts by weight are respectively: 50-80 parts of acrylic resin, 30-40 parts of silicone-acrylic emulsion, 0.5-2 parts of dodecyl alcohol ester, 10-20 parts of diatomite, 10-20 parts of nano titanium dioxide, 1-10 parts of nano silicon powder, 0.5-1 part of dispersant, 0.5-1 part of defoaming agent, 0.2-1 part of bactericide and 15-30 parts of water.
3. The nano waterproof material for the building as claimed in claim 2, wherein the components in parts by weight are respectively: 70 parts of acrylic resin, 30 parts of silicone-acrylate emulsion, 1.2 parts of dodecyl alcohol ester, 15 parts of diatomite, 15 parts of nano titanium dioxide, 8 parts of nano silicon micropowder, 0.5 part of dispersing agent, 0.6 part of defoaming agent, 0.5 part of bactericide and 20 parts of water.
4. The nano waterproof material for buildings according to claim 1, wherein in the components, the particle diameter of nano titanium dioxide is 5-25nm, and the particle diameter of nano silica micropowder is 30-60 nm.
5. The nano waterproof material for construction as claimed in claim 1, wherein the defoaming agent is a silicone type defoaming agent or a polyether modified silicone type defoaming agent.
6. A method for preparing the nano waterproof material for construction as claimed in any one of claims 1 to 5, characterized in that it comprises the following steps:
preparing a mixed emulsion: mixing acrylic resin and silicone-acrylate emulsion, then dropwise adding dodecyl alcohol ester while stirring, and obtaining mixed emulsion after the stirring reaction is finished;
mixing the filler and the auxiliary agent: sieving diatomite, putting the sieved diatomite, nano titanium dioxide and nano silicon powder into a stirrer, adding 5-10 parts of water, adding a dispersing agent, a defoaming agent, a bactericide and the rest water while stirring, and stirring and mixing to obtain a filler aid;
and (3) preparing a finished product: and mixing the mixed emulsion with a filler aid, and stirring for reaction to obtain a finished product.
7. The method for preparing the nano waterproof material for buildings as claimed in claim 6, wherein in the step of preparing the mixed emulsion, the dodecanol ester is added dropwise while stirring at 60-80 ℃ and at a stirring speed of 1000-2000rpm for a reaction time of 45-90 min.
8. The method for preparing the nano waterproof material for buildings as claimed in claim 6, wherein in the step of mixing the filler and the auxiliary agent, the diatomite is sieved by a sieve with 300-1000 meshes.
9. The method for preparing nano waterproof material for building of claim 6, wherein in the step of mixing the filler and the auxiliary agent, the mixture is stirred at 1000-2000rpm for 45-90min at 60-80 ℃.
10. The method for preparing the nano waterproof material for the building as claimed in claim 6, wherein in the step of preparing the finished product, the stirring reaction is carried out at the stirring speed of 1000-2000rpm at 60-80 ℃ for 60-120min to obtain the finished product.
CN202011376287.XA 2020-11-30 2020-11-30 Nano waterproof material for building and preparation method thereof Withdrawn CN112457728A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115160722A (en) * 2022-08-24 2022-10-11 江西省科学院应用化学研究所 Preparation method of organosilicon modified resin nano waterproof material for building

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115160722A (en) * 2022-08-24 2022-10-11 江西省科学院应用化学研究所 Preparation method of organosilicon modified resin nano waterproof material for building

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Application publication date: 20210309