CN114045092B - Nano heat-insulating anticorrosion decorative coating and preparation method thereof - Google Patents
Nano heat-insulating anticorrosion decorative coating and preparation method thereof Download PDFInfo
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- CN114045092B CN114045092B CN202111449047.2A CN202111449047A CN114045092B CN 114045092 B CN114045092 B CN 114045092B CN 202111449047 A CN202111449047 A CN 202111449047A CN 114045092 B CN114045092 B CN 114045092B
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/10—Epoxy resins modified by unsaturated compounds
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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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
- 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
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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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
- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/90—Passive houses; Double facade technology
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Abstract
The invention relates to the technical field of coatings, and provides a novel nano heat-insulating anticorrosion decorative coating which comprises the following raw materials in parts by weight: 100-120 parts of epoxy acrylic resin, 30-40 parts of silica sol, 20-30 parts of fluorocarbon resin, 5-10 parts of a film forming auxiliary agent, 5-10 parts of a flatting agent, 2-4 parts of a wetting agent, 5-7 parts of a dispersing agent, 1-5 parts of a coupling agent, 1-4 parts of a defoaming agent, 80-100 parts of a water-based silicone-acrylic emulsion, 20-40 parts of modified potassium hexatitanate, 150-200 parts of nano silicon dioxide and 300-450 parts of water; the modified potassium hexatitanate is dodecyl benzene sulfonic acid triethanolamine salt modified potassium hexatitanate. Through the technical scheme, the problems that the coating in the prior art is easy to crack and poor in anticorrosion effect are solved.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a nano heat-insulating anticorrosion decorative coating and a preparation method thereof.
Background
With the rapid development of economy, the building industry becomes one of national economic prop industries, and at present, sepiolite and perlite are generally adopted as heat-insulating additives in the coating of the external heat-insulating system of the building external wall, and common emulsion is added as a film-forming material. When the temperature difference of the external environment is increased, the coating film can crack, so that the heat-insulating layer cracks, and the service life of the whole external heat-insulating system of the external wall of the building is influenced.
After the heat-insulating coating is compounded with the building envelope structure, the building can achieve the purpose of heat insulation. The nano heat-insulating coating is a common material in building energy conservation, wherein the nano heat-insulating coating is a novel functional coating developed in China this year, and the nano heat-insulating coating is characterized in that the heat-insulating effect can be achieved through thin-layer construction, so that the nano heat-insulating coating has an important significance for reducing cooling load and energy consumption, and is more and more popular and favored by users with the advantages of economy, convenient use, good heat-insulating effect and the like.
However, at present, domestic products can only be used for the surface of a concrete structure, and cannot be used for an iron base material due to the fact that the corrosion prevention effect cannot be achieved, or the corrosion prevention effect is poor when the corrosion prevention agent is applied to a metal base material.
Disclosure of Invention
The invention provides a novel nano heat-insulating anticorrosion decorative coating and a preparation method thereof, and solves the problems that the coating in the related art is easy to crack and has poor anticorrosion effect.
The technical scheme of the invention is as follows:
a novel nano heat-insulating anticorrosion decorative coating comprises the following raw materials in parts by weight: 100-120 parts of epoxy acrylic resin, 30-40 parts of silica sol, 20-30 parts of fluorocarbon resin, 5-10 parts of a film forming auxiliary agent, 5-10 parts of a flatting agent, 2-4 parts of a wetting agent, 5-7 parts of a dispersing agent, 1-5 parts of a coupling agent, 1-4 parts of a defoaming agent, 80-100 parts of a water-based silicone-acrylic emulsion, 20-40 parts of modified potassium hexatitanate, 150-200 parts of nano silicon dioxide and 300-450 parts of water;
the modified potassium hexatitanate is dodecyl benzene sulfonic acid triethanolamine salt modified potassium hexatitanate.
As a further technical scheme, the preparation method of the modified potassium hexatitanate comprises the following steps: stirring and mixing potassium hexatitanate, water and dodecyl benzene sulfonic acid triethanolamine salt, heating for reaction, cooling to room temperature, centrifugally washing to neutrality, drying and grinding to obtain the modified potassium hexatitanate.
As a further technical scheme, the mass ratio of the potassium hexatitanate to the water to the triethanolamine dodecylbenzene sulfonate is 5:100: 2.
As a further technical scheme, the temperature is increased to 60-65 ℃ for reaction for 3-4 h.
According to a further technical scheme, the dispersing agent is castor oil amide propyl ethyl dimethyl ethyl sulfate ammonium and triethanolamine, and the mass ratio of the castor oil amide propyl ethyl dimethyl ethyl sulfate ammonium to the triethanolamine is (4-6): 1.
As a further technical scheme, the film forming auxiliary agent is one or more of dodecyl alcohol ester, propylene glycol butyl ether, hexanediol butyl ether acetate and dipropylene glycol monobutyl ether.
The invention also provides a preparation method of the novel nano heat-insulating anticorrosion decorative coating, which comprises the following steps:
s1, stirring the modified potassium hexatitanate, the dispersing agent, the coupling agent and the defoaming agent with half of water;
s2, adding the wetting agent, the nano silicon dioxide and the rest water, and continuously stirring;
s3, adding epoxy acrylic resin, fluorocarbon resin, water-based silicone-acrylate emulsion, a film forming aid, a leveling agent and silica sol, and adding a pH regulator to regulate the pH;
s4, adding a thickening agent, and adjusting the viscosity to obtain the nano heat-insulating anticorrosive decorative paint.
In a further technical scheme, in the step S3, the pH is adjusted to 8-9.
In a further technical scheme, in the step S4, the viscosity is adjusted to 75-80 KU.
The beneficial effects of the invention are as follows:
1. the invention not only can effectively achieve the effects of heat insulation and heat preservation, but also can be suitable for various base materials to achieve the effects of corrosion resistance, aging resistance and decoration. The coating main body is nano silicon dioxide, and the epoxy acrylic resin and the fluorocarbon resin are used in the invention, so that the coating can conduct the external high temperature by controlling heat and adjusting temperature, and has good adhesive force, good weather resistance and salt spray resistance. The heat-insulating coating can not only consume heat, but also transmit the heat to the surface to reflect part of the heat, reduce the temperature to about half, retain the heat and ensure that the body has locally high temperature and slow heat conduction. And due to the addition of the nano silicon dioxide and the potassium hexatitanate, the coating can also absorb heat, and the temperature can be controlled by absorbing heat energy when the temperature exceeds a specific temperature through a nano material and reducing the temperature to 28 +/-2 ℃. The invention realizes multiple functions of heat insulation, heat preservation, corrosion prevention and decoration, and is not easy to age and corrode even if being used on an iron base material or being used outdoors.
2. According to the invention, the castor oil amide propyl ethyl dimethyl ethyl ammonium sulfate and triethanolamine are creatively compounded and cooperated to be used as a dispersing agent, so that the whole coating has good dispersibility and is not easy to agglomerate, and the performances among the raw materials can be exerted to the maximum extent, wherein the castor oil amide propyl ethyl dimethyl ammonium ethyl sulfate can adjust the viscosity, plays a certain role in wetting, provides various active groups and adsorption groups, further promotes the dispersing ability of the triethanolamine, so that inorganic powder can be uniformly dispersed in a base material, and the performances of the coating are improved.
3. According to the invention, the dodecylbenzene sulfonic acid triethanolamine salt is adopted to modify the potassium hexatitanate, and more active groups are introduced, so that the potassium hexatitanate is free from agglomeration and other problems in the system in the preparation process, the dodecyl benzene sulfonic acid triethanolamine salt modified potassium hexatitanate can improve the affinity in the polymer base material and improve the fluidity, and on the other hand, the dodecyl benzene sulfonic acid triethanolamine salt modified potassium hexatitanate has stronger adsorption capacity with the matrix when being coated with metal, and the adsorption capacity and the impact resistance are improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive step, are intended to be within the scope of the present invention.
Example 1
Raw materials: 100 parts of epoxy acrylic resin, 30 parts of silica sol, 20 parts of fluorocarbon resin, 5 parts of propylene glycol butyl ether, 505 parts of flatting agent LA, 2 parts of alkyl polyoxyethylene ether, 4 parts of castor oil amide propyl ethyl dimethyl ethyl ammonium sulfate, 1 part of triethanolamine, 1 part of silane coupling agent KH 5701, 1 part of SPA202 defoaming agent, 80 parts of water-based silicone-acrylic emulsion, 20 parts of modified potassium hexatitanate, 150 parts of nano silicon dioxide and 300 parts of water;
the preparation method of the modified potassium hexatitanate comprises the following steps: stirring and mixing 5 parts of potassium hexatitanate, 100 parts of water and 2 parts of dodecylbenzene sulfonic acid triethanolamine salt, heating to 60-65 ℃, reacting for 3 hours, cooling to room temperature, centrifugally washing to be neutral, drying and grinding to obtain modified potassium hexatitanate;
the preparation method comprises the following steps:
s1, stirring the modified potassium hexatitanate, the castor oil amide propyl ethyl dimethyl ethyl sulfate ammonium, the triethanolamine, the silane coupling agent KH570 and the SPA202 defoaming agent with half of water;
s2, adding alkyl polyoxyethylene ether, nano silicon dioxide and the rest water, and continuing stirring;
s3, adding epoxy acrylic resin, fluorocarbon resin, aqueous silicone-acrylate emulsion, propylene glycol butyl ether, flatting agent LA50 and silica sol, and adding 2-amino-2-methyl-1-propanol to adjust the pH value to 8;
and S4, adding hydroxyethyl cellulose, and adjusting the viscosity to 75-76 KU to obtain the nano heat-insulating, heat-preserving and anticorrosive decorative coating.
Example 2
Raw materials: 120 parts of epoxy acrylic resin, 40 parts of silica sol, 30 parts of fluorocarbon resin, 10 parts of dodecyl alcohol ester, 5010 parts of flatting agent LA, 4 parts of alkyl polyoxyethylene ether, 6 parts of ricinoleic amide propyl ethyl dimethyl ammonium ethyl sulfate, 1 part of triethanolamine, KH 5705 parts of silane coupling agent, 4 parts of SPA202 defoaming agent, 100 parts of water-based silicone-acrylic emulsion, 40 parts of modified potassium hexatitanate, 200 parts of nano silicon dioxide and 450 parts of water;
the preparation method of the modified potassium hexatitanate comprises the following steps: stirring and mixing 5 parts of potassium hexatitanate, 100 parts of water and 2 parts of dodecylbenzene sulfonic acid triethanolamine salt, heating to 60-65 ℃, reacting for 4 hours, cooling to room temperature, centrifugally washing to be neutral, drying and grinding to obtain modified potassium hexatitanate;
the preparation method comprises the following steps:
s1, stirring the modified potassium hexatitanate, the castor oil amide propyl ethyl dimethyl ethyl sulfate ammonium, the triethanolamine, the silane coupling agent KH570 and the SPA202 defoaming agent with half of water;
s2, adding alkyl polyoxyethylene ether, nano silicon dioxide and the rest water, and continuing stirring;
s3, adding epoxy acrylic resin, fluorocarbon resin, water-based silicone-acrylate emulsion, dodecyl alcohol ester, a flatting agent LA50 and silica sol, and adding 2-amino-2-methyl-1-propanol to adjust the pH value to 9;
and S4, adding hydroxyethyl cellulose, and adjusting the viscosity to 76-77 KU to obtain the nano heat-insulating, heat-preserving and anticorrosive decorative coating.
Example 3
Raw materials: 110 parts of epoxy acrylic resin, 35 parts of silica sol, 25 parts of fluorocarbon resin, 8 parts of hexanediol butyl ether acetate, 5010 parts of flatting agent LA, 4 parts of alkyl polyoxyethylene ether, 6 parts of castor oil amide propyl ethyl dimethyl ethyl ammonium sulfate, 1 part of triethanolamine, KH 5703 parts of silane coupling agent, 3 parts of SPA202 defoaming agent, 90 parts of water-based silicone-acrylic emulsion, 30 parts of modified potassium hexatitanate, 180 parts of nano silicon dioxide and 380 parts of water; wherein the modified potassium titanate is the modified potassium titanate in example 2;
the preparation method comprises the following steps:
s1, stirring the modified potassium hexatitanate, the castor oil amide propyl ethyl dimethyl ethyl sulfate ammonium, the triethanolamine, the silane coupling agent KH570 and the SPA202 defoaming agent with half of water;
s2, adding alkyl polyoxyethylene ether, nano silicon dioxide and the rest water, and continuing stirring;
s3, adding epoxy acrylic resin, fluorocarbon resin, aqueous silicone-acrylate emulsion, butyl cellosolve acetate, flatting agent LA50 and silica sol, and adding 2-amino-2-methyl-1-propanol to adjust the pH value to 9;
and S4, adding hydroxyethyl cellulose, and adjusting the viscosity to 79KU to obtain the nano heat-insulating, heat-preserving, anti-corrosive and decorative coating.
Example 4
Raw materials: 115 parts of epoxy acrylic resin, 35 parts of silica sol, 28 parts of fluorocarbon resin, 7 parts of hexanediol butyl ether acetate, 508 parts of flatting agent LA, 3 parts of alkyl polyoxyethylene ether, 6 parts of ricinoleic amide propyl ethyl dimethyl ethyl ammonium sulfate, 1 part of triethanolamine, KH 5704 parts of silane coupling agent, 4 parts of SPA202 defoaming agent, 95 parts of water-based silicone-acrylic emulsion, 35 parts of modified potassium hexatitanate, 170 parts of nano silicon dioxide and 400 parts of water; wherein the modified potassium titanate is the modified potassium titanate in example 2;
the preparation method is the same as in example 3.
Example 5
The procedure of example 4 was repeated except that ricinoleamide propylethyldimethylsulfate ethyl ammonium was replaced with triethanolamine in an equivalent amount to that of example 4.
Example 6
The triethanolamine was replaced with an equivalent amount of castor oil amidopropyl ethyldimethyl ethyl ammonium sulfate as compared to example 4, otherwise the same as example 4.
Comparative example 1
The process was carried out in the same manner as in example 4 except that triethanolamine and castor oil amidopropyl ethyl dimethyl ethyl ammonium sulfate were not added as in example 4.
Comparative example 2
The modified potassium titanate was a hexadecyl quaternary ammonium salt modified potassium titanate as compared with example 4, and the other part was the same as example 4, in which the method for producing the modified potassium titanate was the same as that for producing the modified potassium titanate in example 4, except that a modifier was used.
TABLE 1 Performance testing of examples and comparative examples
The coating prepared by the invention has low heat conductivity coefficient, high alkali corrosion resistance adhesive force and higher mechanical property, not only effectively achieves the effects of heat insulation, but also can be suitable for various base materials to achieve the effects of corrosion resistance, aging resistance and decoration.
Among them, the dispersant in example 5 is only triethanolamine, and the dispersant in example 6 is only castor oil amide propyl ethyl dimethyl ethyl ammonium sulfate, so that the adhesion, thermal conductivity and impact resistance of the coating are reduced compared with other examples, because the dispersing effect of the dispersant is poor, the dispersing performance between inorganic materials, organic materials, solid materials and liquid materials is poor. In embodiments 1 to 4 of the present invention, the dispersant is a composition of castor oil amide propyl ethyl dimethyl ethyl sulfate ammonium and triethanolamine, where the castor oil amide propyl ethyl dimethyl ethyl sulfate ammonium can adjust viscosity, play a certain role in wetting, provide a plurality of active groups and adsorption groups, further promote the dispersing ability of the triethanolamine, enable the inorganic powder to be uniformly dispersed in the base material, and improve various properties of the coating.
In comparative example 2, potassium hexatitanate was modified with hexadecyl quaternary ammonium salt, and the impact resistance and heat insulation of the prepared coating were reduced compared with those of triethanolamine dodecylbenzenesulfonate according to the examples of the present invention. The invention considers that more active groups are introduced into the potassium hexatitanate modified by the triethanolamine dodecyl benzene sulfonate, so that the potassium hexatitanate cannot be agglomerated in a system in the preparation process, the potassium hexatitanate modified by the triethanolamine dodecyl benzene sulfonate can improve the affinity in a polymer base material and improve the fluidity, and the potassium hexatitanate modified by the triethanolamine dodecyl benzene sulfonate has stronger adsorption capacity with a matrix when being coated with metal, so that the adsorption capacity and the impact resistance are improved.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The nano heat-insulating anticorrosion decorative coating is characterized by comprising the following raw materials in parts by weight: 100-120 parts of epoxy acrylic resin, 30-40 parts of silica sol, 20-30 parts of fluorocarbon resin, 5-10 parts of a film forming auxiliary agent, 5-10 parts of a flatting agent, 2-4 parts of a wetting agent, 5-7 parts of a dispersing agent, 1-5 parts of a coupling agent, 1-4 parts of a defoaming agent, 80-100 parts of a water-based silicone-acrylic emulsion, 20-40 parts of modified potassium hexatitanate, 150-200 parts of nano silicon dioxide and 300-450 parts of water;
the preparation method of the modified potassium hexatitanate comprises the following steps: stirring and mixing potassium hexatitanate, water and dodecyl benzene sulfonic acid triethanolamine salt, heating for reaction, cooling to room temperature, centrifugally washing to neutrality, drying and grinding to obtain modified potassium hexatitanate;
the mass ratio of the potassium hexatitanate to the water to the triethanolamine dodecylbenzene sulfonate is 5:100: 2;
heating to 60-65 ℃ and reacting for 3-4 h;
the dispersing agent is castor oil amide propyl ethyl dimethyl ethyl sulfate ammonium and triethanolamine, and the mass ratio of the castor oil amide propyl ethyl dimethyl ethyl sulfate ammonium to the triethanolamine is (4-6): 1.
2. The nano heat-insulating corrosion-resistant decorative coating as claimed in claim 1, wherein the film forming aid is one or more of dodecyl alcohol ester, propylene glycol butyl ether, hexylene glycol butyl ether acetate and dipropylene glycol monobutyl ether.
3. The preparation method of the nano heat-insulating anticorrosive decorative paint as claimed in claim 1, characterized by comprising the following steps:
s1, stirring the modified potassium hexatitanate, the dispersing agent, the coupling agent and the defoaming agent with half of water;
s2, adding the wetting agent, the nano silicon dioxide and the rest water and continuing stirring;
s3, adding epoxy acrylic resin, fluorocarbon resin, water-based silicone-acrylate emulsion, a film forming aid, a leveling agent and silica sol, and adding a pH regulator to regulate the pH;
and S4, adding a thickening agent, and adjusting the viscosity to obtain the nano heat-insulating anticorrosive decorative coating.
4. The preparation method of the nano heat-insulating anticorrosion decorative paint as claimed in claim 3, wherein in the step S3, the pH is adjusted to 8-9.
5. The preparation method of the nano heat-insulating anticorrosion decorative paint as claimed in claim 3, wherein in the step S4, the viscosity is adjusted to 75-80 KU.
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