CN111909565B - Coating with mirror surface effect and preparation method thereof - Google Patents

Coating with mirror surface effect and preparation method thereof Download PDF

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Publication number
CN111909565B
CN111909565B CN202010633586.0A CN202010633586A CN111909565B CN 111909565 B CN111909565 B CN 111909565B CN 202010633586 A CN202010633586 A CN 202010633586A CN 111909565 B CN111909565 B CN 111909565B
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coating
emulsion
stirring
agent
mixing
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CN111909565A (en
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何兆强
胡恒志
罗俊君
张治州
付锴
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Guangdong Carpoly Science & Technology Material Co ltd
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Guangdong Carpoly Science & Technology Material Co ltd
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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
    • 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
    • C09D131/00—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 an acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Coating compositions based on derivatives of such polymers
    • C09D131/02—Homopolymers or copolymers of esters of monocarboxylic acids
    • C09D131/04—Homopolymers or copolymers of vinyl acetate
    • 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
    • C09D7/20—Diluents or solvents
    • 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
    • C09D7/65—Additives macromolecular
    • 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
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • 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
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3045—Sulfates

Abstract

The invention belongs to the field of materials, and discloses a coating with a mirror surface effect and a preparation method thereof, wherein the coating comprises the following components: emulsion, filler; the filler comprises light calcium carbonate and barium sulfate; the emulsion is at least one of acrylic emulsion, polyvinyl acetate emulsion, acrylate emulsion or styrene-butadiene emulsion. The coating also comprises cellulose and water. The use of light calcium carbonate, barium sulfate and emulsion in the coating enables the coating to be coated on the surface of equipment in batches, and a coating formed after curing has a good mirror effect; the cellulose and the water are added into the coating, so that the open time of the coating can be prolonged, and the preparation of a large-area coating with a mirror surface effect is facilitated.

Description

Coating with mirror surface effect and preparation method thereof
Technical Field
The invention belongs to the field of materials, and particularly relates to a coating with a mirror surface effect and a preparation method thereof.
Background
The mirror coating is that the coating is coated on a carrier, such as a wood board, plastic, metal and the like, and then is strickled off and cured to form a coating with a mirror effect, namely the formed coating has high glossiness or high reflectivity. The mirror coating can be widely applied to indoor and outdoor decoration.
The common mirror coating in the prior art is a gray calcium system coating, the coating has the defects that the mirror effect of a formed coating is poor, the gray calcium system coating is sprayed on a carrier, the coating needs to be strickleed off before the coating is cured, but the strickle-off time is short, and the coating with a large area is not beneficial to manufacturing the coating with a large area.
Accordingly, it is desirable to provide a coating having a mirror effect and a method for preparing the same. After the coating is sprayed on a carrier, enough time is provided for scraping light before curing, a large-area coating can be prepared, and the formed coating has a good mirror effect.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art described above. The coating with the mirror effect is sprayed on a carrier, and is strickled off and cured to form a coating with the mirror effect with high glossiness, and after the coating is sprayed on the carrier, enough time (the time from the spraying of the coating on the carrier to the curing is called as open time, and the coating can be strickled off in the open time to prepare a large-area coating with the mirror effect) is allowed to strike off before the curing, so that the large-area coating with the mirror effect can be prepared.
The invention conception is as follows: the light calcium carbonate is powder with higher sedimentation volume, when the light calcium carbonate is added into water or aqueous solution, the system is in a relatively fluffy state and is not compact enough, and after the light calcium carbonate-containing coating is applied in batches, a coating film becomes compact after the coating is strickled off by using a batch knife; barium sulfate, especially precipitated barium sulfate, has a high refractive index (1.63-1.65), and when used in a coating film, has high gloss, and barium sulfate in combination with light calcium carbonate can be used only to produce a compact coating with further improved reflectivity, and the gloss of the coating is also greatly increased, so that the coating has a good mirror effect.
The content of free water directly influences the drying time of a paint film of the coating, and cellulose can form hydrogen bonds with water molecules to play a certain water retention role, so that the release time of the coating is prolonged after the cellulose is added into the coating, and the large-area coating with a mirror surface effect is prepared.
Accordingly, it is a first object of the present invention to provide a coating material having a mirror effect, comprising the following components: emulsion, filler; the filler comprises light calcium carbonate and barium sulfate; the emulsion is at least one of acrylic emulsion, polyvinyl acetate emulsion, acrylate emulsion or styrene-butadiene emulsion.
Preferably, the acrylic emulsion is at least one selected from styrene-acrylic emulsion (styrene-acrylic emulsion is obtained by emulsion copolymerization of styrene and acrylate monomers), acrylic emulsion (emulsion obtained by copolymerization of acrylic acid, methacrylic acid, methyl methacrylate, acrylate and functional auxiliary agent), vinyl acetate-acrylic emulsion (water-based polymer resin obtained by copolymerization of vinyl acetate and butyl acrylate serving as main functional monomers) or silicone-acrylic emulsion.
Preferably, the emulsion is an EZ3010 emulsion from Wacker, Germany or an AC-368 emulsion from Dow, USA.
Preferably, the barium sulfate is precipitated barium sulfate.
Preferably, the coating comprises cellulose and water. The addition of cellulose and water to the coating helps to increase the open time of the coating.
Preferably, the cellulose is selected from at least one of hydroxyethyl cellulose and hydroxypropyl methyl cellulose; further preferably, the cellulose is hydroxyethyl cellulose.
Preferably, the filler further comprises at least one of ground calcium carbonate, talc powder or titanium dioxide. The ground limestone plays a role in filling, so that the production cost is reduced; the talcum powder not only has a filling effect, but also is beneficial to improving the application property of batch coating and light receiving; titanium dioxide can improve the covering power of the coating.
Preferably, the mesh number of the filler is 1150-1350 meshes.
Preferably, the sedimentation volume of the light calcium carbonate is 2.4-2.8 mL/g; further preferably, the precipitated volume of the light calcium carbonate is 2.5-2.6 mL/g.
Preferably, the sedimentation volume of the heavy calcium carbonate is 1.1-1.9 mL/g; further preferably, the precipitated volume of the light calcium carbonate is 1.4-1.8 mL/g.
Preferably, the coating further comprises an auxiliary agent.
Further preferably, the auxiliary agent comprises at least one of a dispersant, a wetting agent, a film forming auxiliary agent, a defoaming agent, a thickening agent and a pH regulator. The addition of the auxiliary agent is helpful for improving the film forming performance of the coating and is helpful for further improving the mirror effect of the formed coating.
More preferably, the auxiliary agent further comprises an antifreezing agent and/or a preservative. Can improve the freezing resistance and the corrosion resistance of a coating formed by the coating.
Preferably, the dispersant is selected from at least one of ECODIS P30, vinyl bis stearamide, magnesium stearate, polyphosphate, polyacrylate, polystyrene/maleic acid salts, polyisobutylene maleic acid salts, or Dow's AMP-95 (Dow's AMP-95 may also be used as a pH modifier).
Further preferably, the dispersant is at least one of ECODIS P30, polyphosphate, polyacrylate, polystyrene/maleate, polyisobutylene maleate, or Dow's AMP-95 (Dow's AMP-95 may also be used as a pH adjuster).
Preferably, the wetting agent is at least one selected from EMUL SOGEN LCN 407 of clariant, polyoxyethylene alkylphenol ether, polyoxyethylene fatty alcohol ether, polyoxyethylene polyoxypropylene block copolymer, alkylaryl polyether or polyoxyethylene alkylaryl ether, polyethoxy nonylphenol, and sodium alkyl sulfosuccinate.
Further preferably, the wetting agent is EMUL SOGEN LCN 407 from clariant corporation.
Preferably, the coalescent is selected from at least one of OE300, propylene glycol butyl ether, ethylene glycol butyl ether, or propylene glycol methyl ether acetate, available from Eschmann corporation, USA.
Further preferably, the coalescent is at least one of OE300, propylene glycol butyl ether, or ethylene glycol butyl ether from Eschmann, USA.
Preferably, the defoaming agent is at least one selected from the group consisting of polysiloxane, polyether-modified silicone oil, fatty acid ester, silicone oil, silicone-polyester copolymer, and fatty acid amine.
Preferably, the thickener is selected from at least one of bentonite, sodium polyacrylate, polyoxyethylene, polyvinylpyrrolidone or TT935 of Rohm and Haas malacis.
Further preferably, the thickener is bentonite.
Preferably, AMP-95 from Dow, USA is used as the pH regulator. The pH regulator not only has the function of regulating the pH, but also has a certain wetting function.
Preferably, the antifreeze agent is propylene glycol.
Preferably, the preservative is selected from at least one of EG CONC preservative provided by british tole chemical, MBS 5050 preservative provided by british tole chemical, 1, 2-benzisothiazolin-3-one, dow visil-75 or benzomicazole ester.
Further preferably, the preservative is EG CONC preservative provided by toler chemical co, uk and MBS 5050 preservative provided by toler chemical co, uk.
Preferably, the coating with the mirror effect comprises the following components in parts by weight: 10-40 parts of emulsion and 20-50 parts of filler; the filler comprises 10-15 parts of light calcium carbonate and 10-35 parts of barium sulfate; the emulsion is at least one of acrylic emulsion, styrene-acrylic emulsion, pure acrylic emulsion or vinyl acetate-acrylic emulsion.
Further preferably, the coating with the mirror effect comprises the following components in parts by weight: 13-20 parts of emulsion and 28-42 parts of filler; the filler comprises 8-12 parts of light calcium carbonate and 20-30 parts of barium sulfate; the emulsion is at least one of acrylic emulsion, styrene-acrylic emulsion, pure acrylic emulsion or vinyl acetate-acrylic emulsion.
Preferably, the coating comprises 8 to 12 parts of ground calcium carbonate.
Preferably, the coating comprises 15-25 parts of talcum powder.
Preferably, the coating comprises 2-4 parts of titanium dioxide.
Preferably, the coating comprises 0.3 to 1.5 parts of cellulose.
Preferably, the coating comprises 15 to 30 parts of water.
Preferably, the coating comprises 0.1-1.2 parts of a dispersant; further preferably, the coating comprises 0.3-0.7 parts of a dispersant.
Preferably, the coating comprises 0.1-1.5 parts of a wetting agent; further preferably, the coating comprises 0.2-0.7 parts of a wetting agent.
Preferably, the coating comprises 0.5-2 parts of a film-forming aid; further preferably, the coating comprises 0.8-1.2 parts of film-forming aid.
Preferably, the coating comprises 0.1-1 part of a defoaming agent; further preferably, the coating comprises 0.2-0.4 parts of a defoaming agent.
Preferably, the coating comprises 0.5 to 5 parts of a thickener; further preferably, the coating comprises 0.8-1.5 parts of a thickener.
Preferably, the coating comprises 0.05-0.5 parts of pH regulator; further preferably, the coating comprises 0.15-0.2 parts of regulator.
Preferably, the coating comprises 0.1-3 parts of an antifreeze agent; further preferably, the coating comprises 0.8-1.2 parts of an antifreeze agent.
Preferably, the coating comprises 0.1-3 parts of a preservative; further preferably, the coating comprises 0.2-0.6 parts of preservative.
More preferably, the coating with the mirror effect comprises the following components in parts by weight:
Figure BDA0002566852920000051
a preparation method of a coating with a mirror effect comprises the following steps:
and mixing the emulsion and the filler to prepare the coating.
Preferably, the preparation method of the coating with the mirror effect comprises the following steps:
and mixing cellulose and water, then adding the emulsion and the filler, and stirring and mixing to obtain the coating.
More preferably, the preparation method of the coating with the mirror effect comprises the following steps:
(1) premixing: stirring and mixing part of water and cellulose, then adding a dispersing agent, a wetting agent, part of a defoaming agent, a film-forming assistant, a pH regulator and an antifreezing agent, stirring, adding an emulsion, stirring and mixing to prepare a mixture A;
(2) dispersing: adding a filler into the mixture A prepared in the step (1), and stirring and mixing to prepare a mixture B; the filler is light calcium carbonate, barium sulfate, heavy calcium carbonate, talcum powder and titanium dioxide;
(3) adjusting viscosity: and (3) adding the rest of water, the rest of defoaming agent, thickening agent and preservative into the mixture B prepared in the step (2), and stirring and mixing to prepare the coating.
Preferably, the stirring speed for stirring and mixing the water and the cellulose in the step (1) is 300-500 r/min, and the stirring time is 3-5 min.
Preferably, the stirring speed of the stirring and mixing after the emulsion is added in the step (1) is 500-800 r/min, and the stirring time is 5-10 min.
Preferably, the stirring speed of the stirring and mixing after the filler is added in the step (2) is 1200-1500 rpm, and the stirring time is 20-25 minutes.
Preferably, the stirring speed of the stirring and mixing after the thickener is added in the step (3) is 500-800 r/min, and the stirring time is 5-10 min.
An apparatus having a surface comprising a coating formed from the coating of the present invention.
Preferably, the device is selected from any one of a table, a chair, a floor, a ceiling, and a wall.
The coating is sprayed on the surface of equipment and can be cured at normal temperature to form a coating.
Preferably, the thickness of the coating is 100-.
Compared with the prior art, the invention has the following beneficial effects:
(1) the light calcium carbonate, the barium sulfate and the emulsion are used in the coating, so that the prepared coating is coated on the surface of equipment in batches, and the formed coating has a good mirror effect.
(2) The cellulose and the water are added into the coating, so that the open time of the coating can be prolonged, and the preparation of a large-area coating with a mirror effect is facilitated.
Detailed Description
In order to make the technical solutions of the present invention more apparent to those skilled in the art, the following examples are given for illustration. It should be noted that the following examples are not intended to limit the scope of the claimed invention.
The starting materials, reagents or apparatuses used in the following examples are conventionally commercially available or can be obtained by conventionally known methods, unless otherwise specified.
Example 1: preparation of the coating
A coating with a mirror effect comprises the following components in parts by weight:
Figure BDA0002566852920000061
Figure BDA0002566852920000071
the emulsion is EZ3010 emulsion of German wacker;
the dispersant is ECODIS P30 of the French Gaotai company;
the wetting agent is EMUL SOGEN LCN 407 from clariant corporation;
the film-forming assistant is OE300 of Istman company in the United states;
the defoaming agent is polysiloxane;
the thickening agent is bentonite;
the pH regulator is AMP-95 from Dow;
the antifreezing agent is propylene glycol;
the preservative is 0.15 parts of EG CONC preservative provided by British Turr chemical company and 0.15 parts of MBS 5050 preservative provided by British Turr chemical company;
the mesh number of the light calcium carbonate, the barium sulfate, the heavy calcium carbonate, the talcum powder and the titanium dioxide is 1250 meshes.
A preparation method of a coating with a mirror effect comprises the following steps:
(1) premixing: stirring and mixing 21 parts of water and cellulose at the stirring speed of 400 revolutions per minute for 4 minutes, adding a dispersing agent, a wetting agent, 0.2 part of a defoaming agent, a film forming auxiliary agent, a pH regulator and an antifreezing agent, stirring, adding an emulsion, stirring and mixing at the stirring speed of 600 revolutions per minute for 6 minutes to obtain a mixture A;
(2) dispersing: adding light calcium carbonate, barium sulfate, heavy calcium carbonate, talcum powder and titanium dioxide into the mixture A prepared in the step (1), stirring and mixing at the stirring speed of 1400 revolutions per minute for 22 minutes to prepare a mixture B;
(3) adjusting viscosity: and (3) adding the rest water, the rest defoaming agent, the rest thickening agent bentonite and the preservative into the mixture B prepared in the step (2), stirring and mixing at the stirring speed of 600 revolutions per minute for 6 minutes to prepare the coating with the mirror surface effect.
Example 2: preparation of the coating
A coating with a mirror effect comprises the following components in parts by weight:
Figure BDA0002566852920000081
Figure BDA0002566852920000091
the emulsion is EZ3010 emulsion of German wacker;
the dispersant is ECODIS P30 of the French Gaotai company;
the wetting agent is EMUL SOGEN LCN 407 from clariant corporation;
the film-forming assistant is OE300 of Istman company in the United states;
the defoaming agent is polyether modified silicone oil;
the thickening agent is bentonite;
the pH regulator is AMP-95 from Dow;
the antifreezing agent is propylene glycol;
the preservative was 0.1 parts EG CONC preservative supplied by Torrel chemical Co., UK and 0.2 parts MBS 5050 preservative supplied by Torrel chemical Co., UK.
A preparation method of a coating with a mirror effect comprises the following steps:
(1) pre-mixing: stirring and mixing 23 parts of water and cellulose at the stirring speed of 500 revolutions per minute for 4 minutes, adding a dispersing agent, a wetting agent, 0.2 part of a defoaming agent, a film forming auxiliary agent, a pH regulator and an antifreezing agent, stirring, adding an emulsion, stirring and mixing at the stirring speed of 600 revolutions per minute for 6 minutes to obtain a mixture A;
(2) dispersing: adding light calcium carbonate, barium sulfate, heavy calcium carbonate, talcum powder and titanium dioxide into the mixture A prepared in the step (1), stirring and mixing at the stirring speed of 1500 revolutions per minute for 20 minutes to prepare a mixture B;
(3) adjusting viscosity: and (3) adding the rest water, the rest defoaming agent, the rest thickening agent bentonite and the preservative into the mixture B prepared in the step (2), stirring and mixing at the stirring speed of 600 revolutions per minute for 6 minutes to prepare the coating with the mirror surface effect.
Example 3: preparation of the coating
A coating with a mirror effect comprises the following components in parts by weight:
Figure BDA0002566852920000092
Figure BDA0002566852920000101
the emulsion is EZ3010 emulsion of German wacker;
the dispersing agent is vinyl bis stearamide;
the wetting agent is EMUL SOGEN LCN 407 from clariant corporation;
the film-forming assistant is OE300 of Istman company in the United states;
the defoaming agent is polyether modified silicone oil;
the thickening agent is bentonite;
the pH regulator is AMP-95 from Dow;
the antifreezing agent is propylene glycol;
the preservative is Daoweishi-75.
A preparation method of a coating with a mirror effect comprises the following steps:
(1) premixing: stirring and mixing 23 parts of water and cellulose at the stirring speed of 550 revolutions per minute for 4 minutes, adding a dispersing agent, a wetting agent, 0.2 part of a defoaming agent, a film forming auxiliary agent, a pH regulator and an antifreezing agent, stirring, adding an emulsion, stirring and mixing at the stirring speed of 650 revolutions per minute for 6 minutes to obtain a mixture A;
(2) dispersing: adding light calcium carbonate and barium sulfate into the mixture A prepared in the step (1), stirring and mixing at the stirring speed of 1450 revolutions per minute for 20 minutes to prepare a mixture B;
(3) adjusting viscosity: and (3) adding the rest of water, the rest of defoaming agent, the rest of thickening agent bentonite and preservative into the mixture B prepared in the step (2), stirring and mixing, wherein the stirring speed of stirring and mixing is 650 revolutions per minute, and the stirring time is 6 minutes, so that the coating with the mirror effect is prepared.
Example 4: preparation of the coating
Example 4 is different from example 1 only in that cellulose and water are not added to the dope, and the remaining components and the preparation process are the same as example 1.
Example 5: preparation of the coating
Example 5 differs from example 4 only in that no preservatives and anti-freeze agents were added to the coating, and the remaining components and preparation were the same as in example 4.
Example 6: preparation of the coating
Example 6 differs from example 4 only in that the coating does not contain wetting agents, film forming aids, defoamers, thickeners, preservatives and antifreeze agents, and the remaining components and preparation are the same as in example 4.
Comparative example 1
Comparative example 1 is different from example 1 only in that light calcium carbonate and barium sulfate are not added to the coating material, and the remaining components and the preparation process are the same as those of example 1.
Comparative example 2
Comparative example 2 is different from example 1 only in that light calcium carbonate is not added to the coating, and the remaining components and preparation process are the same as example 1.
Product effectiveness testing
1. Mirror surface effect test
The coating materials obtained in examples 1 to 3, the coating materials obtained in comparative examples 1 to 2, and a commercially available gray calcium system coating material (the gray calcium system coating material means a coating material comprising gray calcium as a main film-forming substance, and the coating material according to the present invention is a coating material comprising an emulsion as a main film-forming substance) were equally applied to a floor in batches, cured at room temperature to form a coating layer, and then the gloss at 20 °, 60 ° and 85 ° of the coating layer was measured by an optical instrument (the larger the gloss, the better the mirror effect of the coating layer), and the results are shown in table 1.
Table 1:
Figure BDA0002566852920000111
Figure BDA0002566852920000121
as can be seen from Table 1, the mirror effect of the coatings formed by the coatings prepared in examples 1 to 3 according to the invention is significantly better than that of the coatings prepared in comparative examples 1 to 2 and also significantly better than that of the coatings formed by the coatings of the commercial gray calcium system.
2. Open time test
The coatings obtained in examples 1 to 3 and the commercial coating of the gray calcium system were applied in equal amounts to a floor and cured at normal temperature to form a coating of 120 μm thickness, and the corresponding open time (the time elapsed from the coating being sprayed on the floor until curing, in which the coating can be scraped off to produce a large-area coating having a mirror effect) was measured, and the results are shown in Table 2.
Table 2:
Figure BDA0002566852920000122
as can be seen from Table 2, the coatings obtained in examples 1-3 according to the invention, which contain cellulose and water, have a significantly greater open time than the open time of the coatings of the commercially available gray calcium system. The increase of the open time is beneficial to preparing a large-area coating with a mirror effect.
Application example
A floor board is characterized in that the surface of the floor board is coated with a layer of the coating prepared in the embodiment 1 in batch mode, the coating is cured at normal temperature to form a coating with the thickness of 150 microns, and the coating layer has a remarkable mirror surface effect.

Claims (4)

1. The coating is characterized by comprising the following components in parts by weight:
Figure FDA0003511871790000011
the emulsion is at least one of acrylic emulsion, polyvinyl acetate emulsion, acrylate emulsion or styrene-butadiene emulsion.
2. The method of preparing the coating of claim 1, comprising the steps of:
and mixing the emulsion and the components to prepare the coating.
3. The method of preparing a coating according to claim 2, comprising the steps of:
(1) premixing: stirring and mixing part of water and cellulose, then adding a dispersing agent, a wetting agent, part of a defoaming agent, a film-forming auxiliary agent, a pH regulator and an antifreezing agent, stirring, adding an emulsion, and stirring and mixing to obtain a mixture A;
(2) dispersing: adding a filler into the mixture A prepared in the step (1), and stirring and mixing to prepare a mixture B; the filler is light calcium carbonate, barium sulfate, heavy calcium carbonate, talcum powder and titanium dioxide;
(3) adjusting viscosity: and (3) adding the rest of water, the rest of defoaming agent, thickening agent and preservative into the mixture B prepared in the step (2), and stirring and mixing to prepare the coating.
4. An apparatus, wherein the surface of the apparatus comprises a coating formed from the coating of claim 1.
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CN102690568A (en) * 2012-06-20 2012-09-26 海安县国力化工有限公司 Polyvinyl acetate latex paint

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