CN110964386A - Exterior wall coating with high stain resistance and preparation method thereof - Google Patents

Exterior wall coating with high stain resistance and preparation method thereof Download PDF

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Publication number
CN110964386A
CN110964386A CN201911261791.2A CN201911261791A CN110964386A CN 110964386 A CN110964386 A CN 110964386A CN 201911261791 A CN201911261791 A CN 201911261791A CN 110964386 A CN110964386 A CN 110964386A
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China
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exterior wall
wall coating
stearate
parts
filler
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CN201911261791.2A
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Chinese (zh)
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禹蒙蒙
高宝林
崔建宾
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Shanghai Baolijia New Material Co ltd
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Shanghai Baolijia New Material Co ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D125/00Coating 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 an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
    • C09D125/02Homopolymers or copolymers of hydrocarbons
    • C09D125/04Homopolymers or copolymers of styrene
    • C09D125/08Copolymers of styrene
    • C09D125/14Copolymers of styrene with unsaturated esters
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D131/00Coating 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 an acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Coating compositions based on derivatives of such polymers
    • C09D131/02Homopolymers or copolymers of esters of monocarboxylic acids
    • C09D131/04Homopolymers or copolymers of vinyl acetate
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D133/00Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04Homopolymers or copolymers of esters
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/16Antifouling paints; Underwater paints
    • C09D5/1687Use of special additives
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2237Oxides; Hydroxides of metals of titanium
    • C08K2003/2241Titanium dioxide
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

The invention uses the polymerized emulsion, the filler, the lubricant and other auxiliary agents to prepare the exterior wall coating with high stain resistance. Compared with the exterior wall coating without the lubricant stearate, the reflection coefficient of the exterior wall coating with the lubricant stearate is improved by 3-31 percent. In addition, the preparation method of the exterior wall coating with high stain resistance adopts a post-addition mode, does not need to change the molecular structure of the emulsion polymer, and is more convenient and feasible to operate; meanwhile, the stain resistance of the exterior wall coating is rapidly and efficiently improved, so that the service life of the exterior wall coating is effectively prolonged, and the coating has extremely high universality and industrial application prospect.

Description

Exterior wall coating with high stain resistance and preparation method thereof
Technical Field
The invention relates to the field of building exterior wall coatings, in particular to an exterior wall coating with high stain resistance and a preparation method thereof.
Background
The building exterior wall coating is a coating coated on the whole building exterior wall, and the main functions of the coating are to decorate and protect the exterior wall, so that the building looks clean and beautiful, and the service life of the building is prolonged. Since exterior wall coatings are exposed to outdoor environments for a long time and air pollution is becoming serious in recent years, these factors place high demands on the stain resistance of exterior wall coatings. If the surface of the exterior wall coating is polluted by dust in the environment shortly after being coated, the exterior wall surface is not neat and bright any more, the decorative effect of the exterior wall coating of the building is lost, and other performance advantages cannot be reflected. Therefore, improving the stain resistance of the exterior wall of a building has become one of the important indexes of the performance of exterior wall coatings.
The existing method for improving the stain resistance of the coating is mainly realized by changing the molecular structure of the polymer from the perspective of emulsion synthesis, has great limitation, cannot be applied to the coating used in various fields and aspects, and the preparation process is complex, thus being not beneficial to the popularization and application of the high stain resistance coating. Therefore, there is a need to develop a new exterior wall coating material with high stain resistance, which is realized by a post-addition method.
Disclosure of Invention
In order to solve the technical problems, the first aspect of the invention provides an exterior wall coating with high stain resistance, which comprises the following raw materials in parts by mass: 40-60 parts of a polymerized emulsion; 18-40 parts of a filler; 1-4 parts of a film forming auxiliary agent; 0.4-1.0 part of thickening agent; 1.0-2.0 parts of cosolvent; 0.1-0.15 parts of wetting agent; 0.4-1.0 part of a dispersing agent; 0-1.5 parts of a lubricant except 0; 200-300 parts of water.
As a preferred technical scheme, the polymerized emulsion is selected from one or more of styrene-acrylic emulsion, pure acrylic emulsion and vinyl acetate-acrylic emulsion.
As a preferred technical scheme, the filler is an inorganic filler and/or an organic filler.
As a preferable technical scheme, the inorganic filler is selected from one or more of titanium dioxide, talcum powder, calcium carbonate, mica powder, barium sulfate, kaolin, white carbon black and wollastonite.
As a preferable technical scheme, the film forming auxiliary agent is selected from one or more of ester alcohol twelve, ethylene glycol butyl ether, propylene glycol methyl ether, propylene glycol ethyl ether, propylene glycol butyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monopropyl ether, dipropylene glycol monobutyl ether, tripropylene glycol n-butyl ether and propylene glycol phenyl ether.
As a preferred technical scheme, the thickening agent is selected from one or more of cellulose thickening agent, alkali-soluble thickening agent and ethylene oxide polyurethane thickening agent.
As a preferred technical scheme, the lubricant is stearate and/or organosilicon polymer.
As a preferable technical scheme, the stearate is selected from one or more of zinc stearate, calcium stearate, barium stearate, lead stearate, magnesium stearate, sodium stearate, aluminum stearate, cadmium stearate, ferric stearate and potassium stearate.
As a preferable technical scheme, the mass ratio of the polymerized emulsion, the filler and the lubricant is 1: (0.4-0.8): (0.002-0.03).
The second aspect of the invention provides a preparation method of the exterior wall coating, which comprises the following steps:
step one, uniformly mixing the polymerization emulsion and the lubricant by mass to obtain a mixed material A;
step two, adding a filler, a wetting agent and a dispersing agent into water, mixing and stirring, adding the mixed material A obtained in the step one, and continuously stirring to obtain a mixed material B;
and step three, adding the film-forming aid, the thickening agent and the cosolvent into the mixed material B obtained in the step two, mixing and stirring, filtering and discharging to obtain the exterior wall coating.
Has the advantages that: the external wall coating with excellent performance is prepared by polymerizing the emulsion, the filler, the lubricant and other auxiliaries. The stain resistance test shows that the reflection coefficient of the exterior wall coating added with a certain lubricant stearate is improved by 3-31% compared with the exterior wall coating not added with the lubricant stearate. In addition, the preparation method of the exterior wall coating with high stain resistance adopts a post-addition mode, does not need to change the molecular structure of the emulsion polymer, and is more convenient and feasible to operate; meanwhile, the stain resistance of the exterior wall coating is rapidly and efficiently improved, so that the service life of the exterior wall coating is effectively prolonged, and the coating has extremely high universality and industrial application prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a graph showing the test results of the stain resistance of the exterior wall of the present invention, wherein ① represents the exterior wall paint obtained in example 1, ② represents the exterior wall paint obtained in example 4, and ③ represents the exterior wall paint obtained in example 5.
Detailed Description
The technical features of the technical solutions provided by the present invention are further clearly and completely described below with reference to the specific embodiments, and the scope of protection is not limited thereto.
The words "preferred", "more preferred", and the like, in the present invention refer to embodiments of the invention that may provide certain benefits, under certain circumstances. However, other embodiments may be preferred, under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention.
In order to solve the technical problems, the first aspect of the invention provides an exterior wall coating with high stain resistance, which comprises the following raw materials in parts by mass: 40-60 parts of a polymerized emulsion; 18-40 parts of a filler; 1-4 parts of a film forming auxiliary agent; 0.4-1.0 part of thickening agent; 1.0-2.0 parts of cosolvent; 0.1-0.15 parts of wetting agent; 0.4-1.0 part of a dispersing agent; 0-1.5 parts of a lubricant except 0; 200-300 parts of water.
In a more preferred embodiment, the exterior wall coating comprises the following raw materials in parts by mass: 50 parts of polymerized emulsion; 30 parts of a filler; 2.5 parts of a film-forming additive; 0.6 part of thickening agent; 1.5 parts of cosolvent; 0.13 part of wetting agent; 0.6 part of a dispersant; 1.0 part of a lubricant; and 250 parts of water.
Polymeric emulsions
The polymerization emulsion is an emulsion obtained by adding an initiator to polymerize monomers dispersed in water.
In a preferred embodiment, the polymeric emulsion is selected from one or more of styrene-acrylic emulsion, and acrylic emulsion.
The styrene-acrylic emulsion is a series of polymerized emulsions obtained by emulsion copolymerization of styrene and acrylic ester monomers. The pure acrylic emulsion is a polymerization emulsion which is obtained by emulsion copolymerization by using all acrylic ester as monomers. The vinyl acetate-acrylic emulsion is a series of polymerized emulsions obtained by emulsion copolymerization of vinyl acetate and acrylic monomers.
In a more preferred embodiment, the polymeric emulsion is a styrene-acrylic emulsion.
In a preferred embodiment, the styrene-acrylic emulsion is selected from one or more of styrene-acrylate emulsion, organic silicon modified styrene-acrylic emulsion, organic fluorine modified styrene-acrylic emulsion, epoxy resin modified styrene-acrylic emulsion and cationic styrene-acrylic emulsion.
In a preferred embodiment, the styrene-acrylic emulsion has a solid content of 48 +/-1 wt%, a viscosity of 800-2500 mPa.S, a pH of 7-9 and a glass transition temperature of 29 +/-1 ℃.
In a more preferred embodiment, the styrene-acrylic emulsion is a styrene-acrylic emulsion having a solid content of 48 wt%, a viscosity of 1650mPa · S, a pH of 8, and a glass transition temperature of 29 ℃.
The solid content is the mass percentage of the rest part of the emulsion in the total amount after the emulsion is dried under specified conditions; the method for detecting the solid content is not particularly limited, and various detection methods well known to those skilled in the art can be used, for example, after the emulsion is dried at 150 ℃ to a constant weight, the solid content is the mass of the emulsion after drying/the mass of the emulsion before drying.
The mPa · S is a viscosity unit, and means a tangent force required to maintain a unit velocity difference between two liquid layers separated from each other by a unit distance; the method for measuring the viscosity is not particularly limited, and various methods known to those skilled in the art, for example, a rotational viscometer, can be used.
The method for measuring the glass transition temperature according to the present invention is not particularly limited, and various measuring methods known to those skilled in the art, such as Differential Scanning Calorimetry (DSC), may be used.
The styrene-acrylic emulsion of the present invention is not particularly limited, and various styrene-acrylic emulsions known to those skilled in the art may be used; the source of the styrene-acrylic emulsion is not particularly limited in the present invention, and can be prepared by conventional synthetic techniques well known to those skilled in the art, such as: mixing water, anionic emulsifier (such as sodium dodecyl benzene sulfonate), acrylic acid, acrylamide, butyl acrylate, styrene, and silane coupling agent (such as one or more of vinyltrimethoxysilane, KH-560, and KH-570), and stirring to obtain monomer emulsion; adding water and anionic emulsifier (such as sodium dodecyl benzene sulfonate) into a reaction device, stirring, mixing uniformly, heating, adding monomer emulsion, initiator (such as tert-butyl hydroperoxide or persulfate) and water for reaction, adding ammonia water to adjust the pH value of the solution to 7, and filtering to remove impurities to obtain the styrene-acrylic emulsion.
In a more preferred embodiment, the styrene-acrylic emulsion is a styrene-acrylate emulsion.
Filler material
The filler is added into the paint, plays a role in framework and filling, and increases the thickness and mechanical properties of a paint film.
In a preferred embodiment, the filler is an inorganic filler and/or an organic filler.
Examples of inorganic fillers include, but are not limited to: titanium dioxide, talcum powder, calcium carbonate, mica powder, barium sulfate, kaolin, white carbon black and wollastonite.
Examples of organic fillers include, but are not limited to: polyethylene wax, polyvinyl chloride resin, polyformaldehyde resin, polypropylene resin, polyacrylic resin and polybutylene resin.
In a more preferred embodiment, the filler is an inorganic filler.
In a still further preferred embodiment, the inorganic filler is titanium dioxide.
The titanium dioxide, namely rutile titanium dioxide, has a CAS number of 13463-67-7, is purchased from Xiangyang dragon python titanium industry Co Ltd, and has a model number of R-996.
Film forming aid
The film forming assistant is one kind of volatile temporary plasticizer capable of promoting the plastic flow and elastic deformation of latex particle and improving its coalescence and may be used in forming film in wide application temperature range.
In a preferred embodiment, the coalescing agent is selected from one or more of the group consisting of ester alcohol dodecanol, ethylene glycol butyl ether, propylene glycol methyl ether, propylene glycol ethyl ether, propylene glycol butyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monopropyl ether, dipropylene glycol monobutyl ether, tripropylene glycol n-butyl ether, and propylene glycol phenyl ether.
In a more preferred embodiment, the coalescent is ester alcohol dodecanol.
The ester alcohol twelve, CAS number 25265-77-4, available from Istman, USA under the TEXANOL model.
Thickening agent
Thickening agents, also known as gelling agents, are substances that increase the viscosity of latex and liquids.
In a preferred embodiment, the thickener is selected from one or more combinations of cellulosic thickeners, alkali soluble thickeners, ethylene oxide polyurethane thickeners.
As examples of cellulosic thickeners, include, but are not limited to: hydroxyethyl cellulose, methyl cellulose, ethyl cellulose, carboxymethyl cellulose, hydroxypropyl methyl cellulose, hydroxypropyl cellulose.
Examples of alkali soluble thickeners include, but are not limited to: dow chemical TT-935, TT-615 and T-9034.
Examples of ethylene oxide polyurethane thickeners include, but are not limited to: the Dow chemical RM2020, RM-8W, RM995, RM 12W.
In a more preferred embodiment, the thickener is a cellulosic thickener.
In a further preferred embodiment, the cellulosic thickener is hydroxyethyl cellulose.
The hydroxyethyl cellulose has a CAS number of 9004-62-0, and is purchased from Shanghai Kahn chemical Co., Ltd, and the type is 854263.
Cosolvent
The cosolvent is a solvent such as ethylene glycol, propylene glycol and the like, is used for softening or dissolving latex particles, and is cooperated with the film-forming assistant to promote the film formation of the latex paint. The cosolvent can effectively prolong the opening time of the latex paint, has a low freezing point, can also reduce the freezing point of the latex paint, and improves the low-temperature stability and the freezing resistance of the latex paint.
The co-solvent is not particularly limited in the present invention, and various co-solvents known to those skilled in the art, such as isopropyl alcohol, benzyl alcohol, ethylene glycol, propylene glycol, and hexylene glycol, can be used.
Wetting agent
Wetting agents are substances that reduce the surface tension or interfacial tension of water, allowing water to spread out on the surface of a solid material, or to penetrate into its surface, thereby wetting the solid material to make it more water-wettable.
In a preferred embodiment, the wetting agent is a non-ionic wetting agent.
In a more preferred embodiment, the nonionic wetting agent is selected from one or more of nonylphenol polyoxyethylene ether, octylphenol polyoxyethylene ether, dodecylphenol polyoxyethylene ether, dinonylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether.
In a further preferred embodiment, the non-ionic wetting agent is nonylphenol polyoxyethylene ether.
The CAS number of the polyoxyethylene nonyl phenyl ether is 26027-38-3.
Dispersing agent
The dispersant is a substance added into the system to enable the system to form a uniform suspension.
In a preferred embodiment, the dispersant is an ammonium polycarboxylate dispersant and/or a sodium polycarboxylate dispersant.
In a more preferred embodiment, the dispersant is a mixture of an ammonium polycarboxylate dispersant and a sodium polycarboxylate dispersant.
In a preferred embodiment, the mass ratio of the polycarboxylic acid ammonium salt dispersant to the polycarboxylic acid sodium salt dispersant is 1: (0.5 to 1).
In a more preferred embodiment, the ratio by mass of the polycarboxylic acid ammonium salt dispersant and the polycarboxylic acid sodium salt dispersant is 1: 0.5.
the polycarboxylate dispersant is purchased from Guangzhou Hengyu chemical industry Co., Ltd, and has the model number of SN 5027. The sodium polycarboxylate dispersant is a sodium polycarboxylate dispersant with CAS number of 62601-60-9, and is purchased from Hengyu chemical Co., Ltd, Guangzhou with model number of SN 5040.
Lubricant agent
The lubricant is a substance which enables a paint film formed after the paint is cured to have good lubricity.
In a preferred embodiment, the lubricant is a stearate and/or a silicone polymer.
Examples of stearates include, but are not limited to, zinc stearate, calcium stearate, barium stearate, lead stearate, magnesium stearate, sodium stearate, aluminum stearate, cadmium stearate, iron stearate, stearic acid.
As examples of silicone polymers, including but not limited to: methyl silicone oil, ethyl silicone oil, phenyl silicone oil, methyl hydrogen-containing silicone oil, methyl phenyl silicone oil, methyl chlorophenyl silicone oil, methyl ethoxy silicone oil, methyl trifluoropropyl silicone oil, methyl vinyl silicone oil, methyl hydroxyl silicone oil, ethyl hydrogen-containing silicone oil and hydroxyl hydrogen-containing silicone oil.
In a more preferred embodiment, the lubricant is a stearate.
In a further preferred embodiment, the stearate is calcium stearate.
The calcium stearate is a calcium stearate solution, is Basf 1097A, and has the solid content of 50 +/-1 wt% and the average solid content of 50 wt%.
In a preferred embodiment, the mass ratio of the polymeric emulsion, the filler and the lubricant is 1: (0.4-0.8): (0.002-0.03).
In a more preferred embodiment, the mass ratio of the polymeric emulsion, the filler and the lubricant is 1: 0.6: 0.02.
the inventors creatively added stearate to the system and unexpectedly found in experimental exploration that when the mass ratio of the polymeric emulsion, filler and lubricant is 1: (0.4-0.8): (0.002-0.03), the stain resistance of the prepared exterior wall coating is obviously improved. The inventor conjectures the possible reason that, on one hand, linear hydrocarbon chains on stearate molecules can be intertwined with polymer molecular chains in the coating, so that the crosslinking density of the system is improved, the linear high molecular polymer is changed into a three-dimensional structure network, the hardness and compactness of a paint film are improved, and the stain resistance is further improved; on the other hand, a certain amount of stearate and filler can fill up gaps in a network of a system structure, movement of external pollutants into the system is limited, and due to the inherent fat characteristic of the stearate, the surface of the coating is smooth and fine and is not easily adsorbed by the pollutants, so that the stain resistance of the exterior wall coating is remarkably improved.
The second aspect of the invention provides a preparation method of the exterior wall coating, which comprises the following steps:
step one, uniformly mixing the polymerization emulsion and the lubricant by mass to obtain a mixed material A;
step two, adding a filler, a wetting agent and a dispersing agent into water, mixing and stirring, adding the mixed material A obtained in the step one, and continuously stirring to obtain a mixed material B;
and step three, adding the film-forming aid, the thickening agent and the cosolvent into the mixed material B obtained in the step two, mixing and stirring, filtering and discharging to obtain the exterior wall coating.
In a preferred embodiment, the preparation method of the exterior wall coating comprises the following steps:
step one, uniformly mixing the polymerization emulsion and the lubricant by mass to obtain a mixed material A;
step two, adding the filler, the wetting agent and the dispersing agent into water under stirring at a rotating speed of 650 revolutions per minute, adding the mixed material A obtained in the step one after mixing and stirring, and continuously stirring for 30 minutes to obtain a mixed material B;
and step three, adding the film-forming aid, the thickening agent and the cosolvent into the mixed material B obtained in the step two, mixing and stirring, filtering and discharging to obtain the exterior wall coating.
The present invention will now be described in detail by way of examples, and the starting materials used are commercially available unless otherwise specified.
Examples
Example 1
The embodiment 1 of the invention provides an exterior wall coating with high stain resistance, which comprises the following raw materials in parts by mass: 50 parts of polymerized emulsion; 30 parts of a filler; 2.5 parts of a film-forming additive; 0.6 part of thickening agent; 1.5 parts of cosolvent; 0.13 part of wetting agent; 0.6 part of a dispersant; 1.0 part of a lubricant; and 250 parts of water.
The polymerization emulsion is styrene-acrylate emulsion, the solid content is 48 wt%, the viscosity is 1650 mPa.S, the pH is 8, and the glass transition temperature is 29 ℃. The filler is titanium dioxide, the CAS number is 13463-67-7, and the filler is purchased from Xiangyang dragon python titanium industry Co Ltd, and the model is R-996. The coalescing agent is ester alcohol twelve, CAS number 25265-77-4, purchased from Istman, USA, and having a TEXANOL model. The thickener is hydroxyethyl cellulose, purchased from Shanghai Kaiyn chemical Co., Ltd., model number 854263. The cosolvent is propylene glycol; the wetting agent is nonylphenol polyoxyethylene ether with CAS number 26027-38-3. The dispersant is a mixture of an ammonium polycarboxylate dispersant and a sodium polycarboxylate dispersant, and the mass ratio of the ammonium polycarboxylate dispersant to the sodium polycarboxylate dispersant is 1: 0.5. the lubricant was a calcium stearate solution, basf 1097A, with an average solids content of 50 wt%.
The preparation method of the exterior wall coating with high stain resistance comprises the following steps:
step one, uniformly mixing the polymerization emulsion and the lubricant by mass to obtain a mixed material A;
step two, adding the filler, the wetting agent and the dispersing agent into water under stirring at a rotating speed of 650 revolutions per minute, adding the mixed material A obtained in the step one after mixing and stirring, and continuously stirring for 30 minutes to obtain a mixed material B;
and step three, adding the film-forming aid, the thickening agent and the cosolvent into the mixed material B obtained in the step two, mixing and stirring, filtering and discharging to obtain the exterior wall coating.
Example 2
The embodiment 2 of the invention provides an exterior wall coating with high stain resistance, which comprises the following raw materials in parts by mass: 40 parts of polymerized emulsion; 18 parts of a filler; 1 part of a film-forming assistant; 0.4 part of thickening agent; 1.0 part of cosolvent; 0.1 part of wetting agent; 0.4 part of a dispersant; 0.1 part of lubricant; 200 parts of water.
The polymerization emulsion is styrene-acrylate emulsion, the solid content is 48 wt%, the viscosity is 1650 mPa.S, the pH is 8, and the glass transition temperature is 29 ℃. The filler is titanium dioxide, the CAS number is 13463-67-7, and the filler is purchased from Xiangyang dragon python titanium industry Co Ltd, and the model is R-996. The coalescing agent is ester alcohol twelve, CAS number 25265-77-4, purchased from Istman, USA, and having a TEXANOL model. The thickener is hydroxyethyl cellulose, purchased from Shanghai Kaiyn chemical Co., Ltd., model number 854263. The cosolvent is propylene glycol; the wetting agent is nonylphenol polyoxyethylene ether with CAS number 26027-38-3. The dispersant is a mixture of an ammonium polycarboxylate dispersant and a sodium polycarboxylate dispersant, and the mass ratio of the ammonium polycarboxylate dispersant to the sodium polycarboxylate dispersant is 1: 0.5. the lubricant was a calcium stearate solution, basf 1097A, with an average solids content of 50 wt%.
The preparation method of the exterior wall coating with high stain resistance is the same as that of the example 1.
Example 3
The embodiment 3 of the invention provides an exterior wall coating with high stain resistance, which comprises the following raw materials in parts by mass: 60 parts of a polymerization emulsion; 40 parts of a filler; 4 parts of a film-forming assistant; 1.0 part of thickening agent; 2.0 parts of cosolvent; 0.15 part of wetting agent; 1.0 part of a dispersant; 1.5 parts of a lubricant; 300 parts of water.
The polymerization emulsion is styrene-acrylate emulsion, the solid content is 48 wt%, the viscosity is 1650 mPa.S, the pH is 8, and the glass transition temperature is 29 ℃. The filler is titanium dioxide, the CAS number is 13463-67-7, and the filler is purchased from Xiangyang dragon python titanium industry Co Ltd, and the model is R-996. The coalescing agent is ester alcohol twelve, CAS number 25265-77-4, purchased from Istman, USA, and having a TEXANOL model. The thickener is hydroxyethyl cellulose, purchased from Shanghai Kaiyn chemical Co., Ltd., model number 854263. The cosolvent is propylene glycol; the wetting agent is nonylphenol polyoxyethylene ether with CAS number 26027-38-3. The dispersant is a mixture of an ammonium polycarboxylate dispersant and a sodium polycarboxylate dispersant, and the mass ratio of the ammonium polycarboxylate dispersant to the sodium polycarboxylate dispersant is 1: 0.5. the lubricant was a calcium stearate solution, basf 1097A, with an average solids content of 50 wt%.
The preparation method of the exterior wall coating with high stain resistance is the same as that of the example 1.
Example 4
Embodiment 4 of the present invention provides an exterior wall coating with high stain resistance, which comprises the following raw materials by mass: 50 parts of polymerized emulsion; 30 parts of a filler; 2.5 parts of a film-forming additive; 0.6 part of thickening agent; 1.5 parts of cosolvent; 0.13 part of wetting agent; 0.6 part of a dispersant; 0.5 part of a lubricant; and 250 parts of water.
The polymerization emulsion is styrene-acrylate emulsion, the solid content is 48 wt%, the viscosity is 1650 mPa.S, the pH is 8, and the glass transition temperature is 29 ℃. The filler is titanium dioxide, the CAS number is 13463-67-7, and the filler is purchased from Xiangyang dragon python titanium industry Co Ltd, and the model is R-996. The coalescing agent is ester alcohol twelve, CAS number 25265-77-4, purchased from Istman, USA, and having a TEXANOL model. The thickener is hydroxyethyl cellulose, purchased from Shanghai Kaiyn chemical Co., Ltd., model number 854263. The cosolvent is propylene glycol; the wetting agent is nonylphenol polyoxyethylene ether with CAS number 26027-38-3. The dispersant is a mixture of an ammonium polycarboxylate dispersant and a sodium polycarboxylate dispersant, and the mass ratio of the ammonium polycarboxylate dispersant to the sodium polycarboxylate dispersant is 1: 0.5. the lubricant was a calcium stearate solution, basf 1097A, with an average solids content of 50 wt%.
The preparation method of the exterior wall coating with high stain resistance is the same as that of the example 1.
Example 5
Embodiment 5 of the present invention provides an exterior wall coating with high stain resistance, which comprises the following raw materials by mass: 50 parts of polymerized emulsion; 30 parts of a filler; 2.5 parts of a film-forming additive; 0.6 part of thickening agent; 1.5 parts of cosolvent; 0.13 part of wetting agent; 0.6 part of a dispersant; and 250 parts of water.
The polymerization emulsion is styrene-acrylate emulsion, the solid content is 48 wt%, the viscosity is 1650 mPa.S, the pH is 8, and the glass transition temperature is 29 ℃. The filler is titanium dioxide, the CAS number is 13463-67-7, and the filler is purchased from Xiangyang dragon python titanium industry Co Ltd, and the model is R-996. The coalescing agent is ester alcohol twelve, CAS number 25265-77-4, purchased from Istman, USA, and having a TEXANOL model. The thickener is hydroxyethyl cellulose, purchased from Shanghai Kaiyn chemical Co., Ltd., model number 854263. The cosolvent is propylene glycol; the wetting agent is nonylphenol polyoxyethylene ether with CAS number 26027-38-3. The dispersant is a mixture of an ammonium polycarboxylate dispersant and a sodium polycarboxylate dispersant, and the mass ratio of the ammonium polycarboxylate dispersant to the sodium polycarboxylate dispersant is 1: 0.5.
the preparation method of the exterior wall coating with high stain resistance is the same as that of the example 1.
Example 6
Embodiment 6 of the present invention provides an exterior wall coating with high stain resistance, which comprises the following raw materials by mass: 50 parts of polymerized emulsion; 17.5 parts of a filler; 2.5 parts of a film-forming additive; 0.6 part of thickening agent; 1.5 parts of cosolvent; 0.13 part of wetting agent; 0.6 part of a dispersant; 1.0 part of a lubricant; and 250 parts of water.
The polymerization emulsion is styrene-acrylate emulsion, the solid content is 48 wt%, the viscosity is 1650 mPa.S, the pH is 8, and the glass transition temperature is 29 ℃. The filler is titanium dioxide, the CAS number is 13463-67-7, and the filler is purchased from Xiangyang dragon python titanium industry Co Ltd, and the model is R-996. The coalescing agent is ester alcohol twelve, CAS number 25265-77-4, purchased from Istman, USA, and having a TEXANOL model. The thickener is hydroxyethyl cellulose, purchased from Shanghai Kaiyn chemical Co., Ltd., model number 854263. The cosolvent is propylene glycol; the wetting agent is nonylphenol polyoxyethylene ether with CAS number 26027-38-3. The dispersant is a mixture of an ammonium polycarboxylate dispersant and a sodium polycarboxylate dispersant, and the mass ratio of the ammonium polycarboxylate dispersant to the sodium polycarboxylate dispersant is 1: 0.5. the lubricant was a calcium stearate solution, basf 1097A, with an average solids content of 50 wt%.
The preparation method of the exterior wall coating with high stain resistance is the same as that of the example 1.
Example 7
Embodiment 7 of the present invention provides an exterior wall coating with high stain resistance, which comprises the following raw materials by mass: 50 parts of polymerized emulsion; 30 parts of a filler; 2.5 parts of a film-forming additive; 0.6 part of thickening agent; 1.5 parts of cosolvent; 0.13 part of wetting agent; 0.6 part of a dispersant; 0.05 part of a lubricant; and 250 parts of water.
The polymerization emulsion is styrene-acrylate emulsion, the solid content is 48 wt%, the viscosity is 1650 mPa.S, the pH is 8, and the glass transition temperature is 29 ℃. The filler is titanium dioxide, the CAS number is 13463-67-7, and the filler is purchased from Xiangyang dragon python titanium industry Co Ltd, and the model is R-996. The coalescing agent is ester alcohol twelve, CAS number 25265-77-4, purchased from Istman, USA, and having a TEXANOL model. The thickener is hydroxyethyl cellulose, purchased from Shanghai Kaiyn chemical Co., Ltd., model number 854263. The cosolvent is propylene glycol; the wetting agent is nonylphenol polyoxyethylene ether with CAS number 26027-38-3. The dispersant is a mixture of an ammonium polycarboxylate dispersant and a sodium polycarboxylate dispersant, and the mass ratio of the ammonium polycarboxylate dispersant to the sodium polycarboxylate dispersant is 1: 0.5. the lubricant was a calcium stearate solution, basf 1097A, with an average solids content of 50 wt%.
The preparation method of the exterior wall coating with high stain resistance is the same as that of the example 1.
Evaluation of Performance
And (3) testing the stain resistance: sampling is carried out on the exterior wall coating with high stain resistance obtained in the examples 1-7 according to a sampling method of GB/T3186-2006 sample raw materials for colored paint, varnish and colored paint and varnish. Using 120 mu m and 80 mu m wire rods to prepare films on a non-asbestos fiber cement board with the size of 150mm multiplied by 70mm multiplied by 4mm in two steps, wherein the time interval of the two coating steps is 6h, preparing three samples for each sample, then placing the samples under standard test conditions for curing for 168h, and carrying out two-cycle test according to a method B (oven rapid method) in GB/T9780-2013 'building coating stain resistance test method', without ultraviolet crosslinking. Wherein, the stain resistance of the coating of the exterior wall coating is calculated according to the formula (1):
Figure BDA0002311797220000111
in the formula: xOuter cover-a reflectance reduction rate of the exterior wall paint coating; a-initial average reflection coefficient of the coating; b-average reflection coefficient of the coating after contamination test. The arithmetic mean of the three test panels was taken as the result, 3 significant values were retained, and the relative error of the replicates of the three test panels should be no greater than 15%, the results are shown in table 1.
Table 1 results of performance testing
Figure BDA0002311797220000112
Figure BDA0002311797220000121
The exterior wall coating with high stain resistance obtained in the embodiments 1-3 meets the requirements of the industry standard GB/T9755-.
The experimental results are combined to show that the external wall coating with excellent performance is prepared by using the polymeric emulsion, the filler, the lubricant and other additives, and the stain resistance test shows that the reduction rate of the reflection coefficient of the external wall coating without adding the lubricant stearate is 24.3% as shown in ③ sample in the attached drawing 1, the reduction rate of the reflection coefficient of the external wall coating with 0.5 mass part of the lubricant added in the embodiment 4 of the invention is 21.1% as shown in ② sample in the attached drawing 1, and the reduction rate of the reflection coefficient of the external wall coating with 1.0 mass part of the lubricant stearate added in the embodiment 1 of the invention is only 16.7% as shown in ① sample in the attached drawing 1, so that the stain resistance of the sample is improved by 31% compared with the embodiment 5 without adding the lubricant stearate.
The foregoing examples are merely illustrative and serve to explain some of the features of the method of the present invention. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. The invention is not limited to the embodiments described above, but rather, many modifications and variations may be made by one skilled in the art without departing from the scope of the invention.

Claims (10)

1. The exterior wall coating with high stain resistance is characterized by comprising the following raw materials in parts by mass: 40-60 parts of a polymerized emulsion; 18-40 parts of a filler; 1-4 parts of a film forming auxiliary agent; 0.4-1.0 part of thickening agent; 1.0-2.0 parts of cosolvent; 0.1-0.15 parts of wetting agent; 0.4-1.0 part of a dispersing agent; 0-1.5 parts of a lubricant except 0; 200-300 parts of water.
2. The exterior wall coating of claim 1, wherein the polymerized emulsion is selected from one or more of styrene-acrylic emulsion, and acrylic emulsion.
3. The exterior wall coating of claim 1, wherein the filler is an inorganic filler and/or an organic filler.
4. The exterior wall coating of claim 3, wherein the inorganic filler is selected from one or more of titanium dioxide, talc, calcium carbonate, mica powder, barium sulfate, kaolin, white carbon black, and wollastonite.
5. The exterior wall coating of claim 1, wherein the film forming additive is selected from the group consisting of ester alcohol dodecanol, ethylene glycol butyl ether, propylene glycol methyl ether, propylene glycol ethyl ether, propylene glycol butyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monopropyl ether, dipropylene glycol monobutyl ether, tripropylene glycol n-butyl ether, and propylene glycol phenyl ether in combination with one or more other film forming additives.
6. The exterior wall coating of claim 1, wherein the thickener is selected from one or more of a cellulosic thickener, an alkali soluble thickener, and an ethylene oxide polyurethane thickener.
7. The exterior wall coating of claim 1, wherein the lubricant is a stearate and/or a silicone polymer.
8. The exterior wall coating of claim 7, wherein said stearate is selected from one or more of zinc stearate, calcium stearate, barium stearate, lead stearate, magnesium stearate, sodium stearate, aluminum stearate, cadmium stearate, iron stearate, and potassium stearate.
9. The exterior wall coating of any one of claims 1 to 8, wherein the mass ratio of the polymerized emulsion, the filler and the lubricant is 1: (0.4-0.8): (0.002-0.03).
10. A method for preparing the exterior wall coating according to any one of claims 1 to 9, comprising the steps of:
step one, uniformly mixing the polymerization emulsion and the lubricant by mass to obtain a mixed material A;
step two, adding a filler, a wetting agent and a dispersing agent into water, mixing and stirring, adding the mixed material A obtained in the step one, and continuously stirring to obtain a mixed material B;
and step three, adding the film-forming aid, the thickening agent and the cosolvent into the mixed material B obtained in the step two, mixing and stirring, filtering and discharging to obtain the exterior wall coating.
CN201911261791.2A 2019-12-10 2019-12-10 Exterior wall coating with high stain resistance and preparation method thereof Pending CN110964386A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115260820A (en) * 2022-08-18 2022-11-01 上海保立佳新材料有限公司 High-toughness composite cellulose for coating and application thereof
CN116102962A (en) * 2021-11-11 2023-05-12 江苏凯伦建材股份有限公司 Water-based polyurethane waterproof coating and preparation method and application thereof
CN116120792A (en) * 2023-01-06 2023-05-16 佛山市科切路威环保科技有限公司 Paint capable of improving paint film hardness and weather resistance and processing technology

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103666150A (en) * 2013-12-06 2014-03-26 青岛益群漆业集团有限公司 Mildew-resistant anti-algae pure acrylic emulsion exterior-wall paint
CN103821305A (en) * 2014-01-13 2014-05-28 东营瑞源特种建筑材料有限公司 Antipollution wall flexible stone decorating material and production method thereof
CN103881578A (en) * 2012-12-21 2014-06-25 深圳市嘉达高科产业发展有限公司 Color reflective heat-insulation exterior wall elastic coating and preparation method thereof
CN105131769A (en) * 2015-09-10 2015-12-09 三棵树涂料股份有限公司 Special dull finish paint for sand textured external wall coating and preparation method of special dull finish paint
CN106189607A (en) * 2015-04-30 2016-12-07 立邦涂料(中国)有限公司 A kind of bottom surface unification elastic coating and its preparation method and application
CN106905727A (en) * 2017-03-20 2017-06-30 山东绿拓涂料科技有限公司 Inorganic interior wall coating of functional form and preparation method thereof
CN107236388A (en) * 2017-07-25 2017-10-10 合肥欧仕嘉机电设备有限公司 A kind of thermostable heat-isolating coating and preparation method thereof
CN109593470A (en) * 2018-12-04 2019-04-09 台州市中凯实业有限公司 Natural real stone paint coating and preparation method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103881578A (en) * 2012-12-21 2014-06-25 深圳市嘉达高科产业发展有限公司 Color reflective heat-insulation exterior wall elastic coating and preparation method thereof
CN103666150A (en) * 2013-12-06 2014-03-26 青岛益群漆业集团有限公司 Mildew-resistant anti-algae pure acrylic emulsion exterior-wall paint
CN103821305A (en) * 2014-01-13 2014-05-28 东营瑞源特种建筑材料有限公司 Antipollution wall flexible stone decorating material and production method thereof
CN106189607A (en) * 2015-04-30 2016-12-07 立邦涂料(中国)有限公司 A kind of bottom surface unification elastic coating and its preparation method and application
CN105131769A (en) * 2015-09-10 2015-12-09 三棵树涂料股份有限公司 Special dull finish paint for sand textured external wall coating and preparation method of special dull finish paint
CN106905727A (en) * 2017-03-20 2017-06-30 山东绿拓涂料科技有限公司 Inorganic interior wall coating of functional form and preparation method thereof
CN107236388A (en) * 2017-07-25 2017-10-10 合肥欧仕嘉机电设备有限公司 A kind of thermostable heat-isolating coating and preparation method thereof
CN109593470A (en) * 2018-12-04 2019-04-09 台州市中凯实业有限公司 Natural real stone paint coating and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116102962A (en) * 2021-11-11 2023-05-12 江苏凯伦建材股份有限公司 Water-based polyurethane waterproof coating and preparation method and application thereof
CN115260820A (en) * 2022-08-18 2022-11-01 上海保立佳新材料有限公司 High-toughness composite cellulose for coating and application thereof
CN116120792A (en) * 2023-01-06 2023-05-16 佛山市科切路威环保科技有限公司 Paint capable of improving paint film hardness and weather resistance and processing technology

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