CN111790585A - Environment-friendly coating for surface of wood craft and preparation method thereof - Google Patents
Environment-friendly coating for surface of wood craft and preparation method thereof Download PDFInfo
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- CN111790585A CN111790585A CN202010692548.2A CN202010692548A CN111790585A CN 111790585 A CN111790585 A CN 111790585A CN 202010692548 A CN202010692548 A CN 202010692548A CN 111790585 A CN111790585 A CN 111790585A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/06—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/17—Stirrers with additional elements mounted on the stirrer, for purposes other than mixing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/10—Maintenance of mixers
- B01F35/12—Maintenance of mixers using mechanical means
- B01F35/123—Maintenance of mixers using mechanical means using scrapers for cleaning mixers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/716—Feed mechanisms characterised by the relative arrangement of the containers for feeding or mixing the components
- B01F35/7164—Feed mechanisms characterised by the relative arrangement of the containers for feeding or mixing the components the containers being placed in parallel before contacting the contents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/22—Esters containing halogen
- C08F220/24—Esters containing halogen containing perhaloalkyl radicals
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
- C09D133/16—Homopolymers or copolymers of esters containing halogen atoms
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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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2350/00—Pretreatment of the substrate
- B05D2350/30—Change of the surface
- B05D2350/50—Smoothing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2502/00—Acrylic polymers
- B05D2502/005—Acrylic polymers modified
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer 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)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses an environment-friendly coating for the surface of a wooden handicraft and a preparation method thereof, the surface of the wooden handicraft is polished to be smooth, the coating is convenient to brush, the smoothness is high after the coating is completely cured to form a film, then the environment-friendly coating is prepared, the environment-friendly coating is green and environment-friendly, no VOC is discharged, and the fluorine-silicon modified acrylate emulsion used in the environment-friendly coating is prepared by a soap-free emulsion polymerization method without adding an emulsifier, so that the environmental pollution is further reduced and the cleanliness of emulsion particles is improved; the environment-friendly coating is green and environment-friendly, high in safety, good in adhesive force on the surface of furniture substrates such as wood and aluminum alloy, good in viscosity, and not easy to break and fall off, and can effectively protect the wood artware, and the service life of the wood artware is prolonged.
Description
Technical Field
The invention relates to the field of artware, in particular to an environment-friendly coating for the surface of a wooden artware and a preparation method thereof.
Background
The wood artware broadly comprises various products which are machined or manually processed by taking wood as a main raw material, wherein the raw material can be rosewood, pine wood, fir wood, camphor wood, sandalwood, tung wood, rosewood, peach wood, maple wood, birch, elm wood, boxwood, nanmu, basswood and the like.
For example, patent application No. cn201810882171.x discloses a mothproof paint suitable for wood artware, wherein a metal-organic hybrid functional complex is added into the paint as a mothproof material, so that the invasion problem of pests is eliminated, and water is well prevented from entering wood through cell cavity capillaries, thereby achieving the waterproof and anticorrosion effects.
Therefore, the problem to be solved by the invention is how to improve the problems that the existing coating has poor environmental protection performance, low adhesive force and easy cracking and falling of the coating.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide an environment-friendly coating for the surface of a wood craft and a preparation method thereof, wherein the environment-friendly coating comprises the following steps: the surface of the wooden artwork is polished to be smooth, coating is convenient to carry out, the smoothness is high after the coating is completely cured to form a film, then the environment-friendly coating is prepared, the environment-friendly coating is green and environment-friendly and free of VOC (volatile organic Compounds) emission, a soap-free emulsion polymerization method is used for a fluorine-silicon modified acrylate emulsion used in the environment-friendly coating, an emulsifier is not added, the pollution to the environment is further reduced, the cleanliness of emulsion particles is improved, and finally the prepared environment-friendly coating is uniformly coated on the wooden artwork and then is placed in an oven to be dried and cured; prepare environmental protection coating through using material mixing equipment, through divide into solid raw material and liquid raw materials according to the form with each component of environmental protection coating, and put into a plurality of charging tank of material mixing equipment respectively with various liquid raw materials, open the valve on the charging tank, release various liquid raw materials of environmental protection coating to the material delivery hose in, carry air current increase material delivery hose internal pressure through carrying air pump operation transport, carry various liquid raw materials of environmental protection coating to the blending tank in, the discharge tube head, the position of stirring scraper blade in the blending tank inner chamber lasts the change, stir various liquid raw materials of environmental protection coating, treat that various raw materials of environmental protection coating mix evenly, it is poor to have solved current coating environmental protection performance, adhesive force is low, the problem of the phenomenon that the coating breaks and drops easily appears.
The purpose of the invention can be realized by the following technical scheme:
the environment-friendly coating for the surface of the wood craft is prepared by the following steps:
step one, polishing treatment: after the surface of the wooden handicraft is polished by using the abrasive paper with the grain number of 400#, polishing is performed by using the abrasive paper with the grain number of 1500#, and the wooden handicraft is reserved;
step two, preparing the environment-friendly coating: the method comprises the following steps of dividing components of the environment-friendly coating into solid raw materials and liquid raw materials according to forms, respectively placing the liquid raw materials into a plurality of feeding tanks of material mixing equipment, opening valves on the feeding tanks, releasing the liquid raw materials of the environment-friendly coating into material conveying hoses, conveying the liquid raw materials of the environment-friendly coating into the mixing tanks by conveying air flow conveyed by a conveying air pump, realizing movement of a first transverse connecting rod and a second transverse connecting rod by operation of a second driving motor, driving positions of a discharging pipe head and a stirring scraper blade in an inner cavity of the mixing tank to be continuously changed, stirring the liquid raw materials of the environment-friendly coating, uniformly mixing the liquid raw materials of the environment-friendly coating, finally adding the rest solid raw materials into the mixing tank, stirring by the stirring scraper blade, and uniformly mixing to obtain the environment-friendly coating;
step three, forming an environment-friendly coating: and (3) uniformly coating the polished wood artware with an environment-friendly coating, and then putting the wood artware into an oven for drying treatment to obtain an environment-friendly coating on the surface of the wood artware.
As a further scheme of the invention: the environment-friendly coating comprises the following components in parts by weight:
45-65 parts of fluorine-silicon modified acrylate emulsion, 10-15 parts of pure acrylic emulsion, 4-8 parts of film forming additive, 0.3-0.5 part of dispersing agent, 0.3-0.5 part of thickening agent, 0.2-0.4 part of antiseptic bactericide, 0.3-0.5 part of defoaming agent, 0.6-0.8 part of pH regulator and 10-40 parts of water.
As a further scheme of the invention: the fluorine-silicon modified acrylate emulsion comprises the following specific steps:
the method comprises the following steps: mixing absolute ethyl alcohol and silicon dioxide aerogel micro powder in a mass ratio of 65-88: 1, and then performing ultrasonic dispersion for 2-3 hours;
step two: heating the dispersed mixed solution of the silica aerogel micro powder and ethanol to 65-85 ℃, adding a silane coupling agent while stirring, and reacting for 35-45 minutes to obtain a mixture A;
step three: adding the mixture A, perfluoroalkyl ethyl acrylate, methyl methacrylate, butyl acrylate, methacryloyloxyethyl trimethyl ammonium chloride and hydroxyethyl acrylate into a reaction kettle, uniformly mixing to obtain a mixture B, then adding an initiator accounting for 0.8% of the mass of the mixture B, adjusting the pH value to 8.0 by using 0.05% of sodium hydroxide, stirring for reacting for 2 hours, then adding an initiator accounting for 0.2% of the mass of the mixture B, reacting for 1 hour, and cooling the reactant to obtain the fluorosilicone modified acrylate emulsion.
As a further scheme of the invention: wherein the specific surface area of the silicon dioxide aerogel micro powder is 650-800 m2The particle size of the silicon dioxide aerogel micro powder is 20-50 nm; wherein the adding amount of the silane coupling agent is 1.2-1.8 times of the mass of the silica aerogel micro powder; the silane coupling agent is one of KH550, KH560, KH570 and isobutyl triethoxy silicon; the adding amount ratio of the mixture A to the perfluoroalkyl ethyl acrylate, the methyl methacrylate, the butyl acrylate, the methacryloyloxyethyl trimethyl ammonium chloride to the hydroxyethyl acrylate is 1:15.6:14.8:8.5:10: 0.5; the initiator is azobisisobutyronitrile.
As a further scheme of the invention: the film-forming assistant is one of propylene glycol, methoxy butanol, ethylene glycol monobutyl ether, propylene glycol butyl ether, dipropylene glycol dimethyl ether, diethylene glycol monoethyl ether and tripropylene glycol butyl ether; the dispersing agent is one of sodium dodecyl sulfate, methyl amyl alcohol, polyacrylamide, Guel gum and fatty acid polyglycol ester; the thickening agent is hydroxyethyl cellulose ether; the antiseptic bactericide is nano zinc oxide; the defoaming agent is tributyl phosphate; the pH regulator is diethanolamine.
As a further scheme of the invention: the working process of preparing the environment-friendly coating by the material mixing equipment in the step two is as follows:
the method comprises the following steps: the components of the environment-friendly coating are divided into solid raw materials and liquid raw materials according to forms, and the liquid raw materials are respectively placed into a plurality of feeding tanks of material mixing equipment;
step two: starting a first driving motor, driving a threaded conveying rod to rotate through a first speed reducer by the operation of the first driving motor, driving a first sliding plate to ascend along a first sliding rail through the meshed connection of the threaded conveying rod and a threaded sleeve, so as to drive the height of supporting legs to ascend, realizing the ascending of a mixing tank through a plurality of supporting legs, and enabling a discharge pipe head and a stirring scraper to be positioned in an inner cavity of the mixing tank;
step three: opening a valve on the feeding tank, releasing various liquid raw materials of the environment-friendly coating into the material conveying hose, starting the air conveying pump, operating the air conveying pump to convey air flow to increase the internal pressure of the material conveying hose, and conveying various liquid raw materials of the environment-friendly coating into the mixing tank;
step four: starting a second driving motor, driving the gear to rotate by the second speed reducer through the operation of the second driving motor, and enabling a second sliding plate to slide on a second sliding rail through the meshing connection of the gear and the rack, so as to drive a first transverse connecting rod and a second transverse connecting rod to move, continuously changing the positions of a discharge pipe head and a stirring scraper in the inner cavity of the mixing tank, and stirring various liquid raw materials of the environment-friendly coating;
step five: and (3) uniformly mixing various liquid raw materials of the environment-friendly coating, finally adding the rest solid raw materials into a mixing tank, stirring by a stirring scraper, and uniformly mixing to obtain the environment-friendly coating.
The invention has the beneficial effects that:
(1) the invention relates to a preparation method of an environment-friendly coating for the surface of a wooden handicraft, which comprises the steps of firstly polishing the surface of the wooden handicraft to be smooth, facilitating coating of paint, and ensuring high smoothness after the paint is completely cured to form a film, then preparing the environment-friendly paint, wherein the environment-friendly paint is green and environment-friendly and has no VOC emission, and fluorine-silicon modified acrylate emulsion used in the environment-friendly paint is prepared by a soap-free emulsion polymerization method without adding an emulsifier, so that the environmental pollution is further reduced, and the cleanliness of emulsion particles is improved; the environment-friendly coating is green and environment-friendly, has high safety, has good adhesive force and viscosity on the surface of furniture substrates such as wood, aluminum alloy and the like, is not easy to crack and fall off, can effectively protect the wood artware, and prolongs the service life of the wood artware;
(2) the invention relates to a preparation method of an environment-friendly coating for the surface of a wooden handicraft, which prepares the environment-friendly coating by using material mixing equipment, divides each component of the environment-friendly coating into solid raw materials and liquid raw materials according to forms, respectively puts various liquid raw materials into a plurality of feeding tanks of the material mixing equipment, drives a threaded conveying rod to rotate by a first speed reducer through the operation of a first driving motor, drives a first sliding plate to ascend along a first sliding rail through the meshing connection of the threaded conveying rod and a threaded sleeve, thereby driving the height of a supporting leg to ascend, realizes the ascending of the mixing tank through a plurality of supporting legs, enables a discharging pipe head and a stirring scraper blade to be positioned in the inner cavity of the mixing tank, opens a valve on the feeding tank, releases various liquid raw materials of the environment-friendly coating into a material conveying hose, starts a gas conveying pump, and conveys gas flow to increase the internal pressure of the material conveying hose, conveying various liquid raw materials of the environment-friendly coating into a mixing tank, driving a gear to rotate through a second speed reducer by the operation of a second driving motor, and enabling a second sliding plate to slide on a second sliding rail by meshing connection of a gear and a rack so as to drive a first transverse connecting rod and a second transverse connecting rod to move, so that the positions of a discharging pipe head and a stirring scraper in the inner cavity of the mixing tank are continuously changed, stirring the various liquid raw materials of the environment-friendly coating, adding the rest solid raw materials into the mixing tank after the various liquid raw materials of the environment-friendly coating are uniformly mixed, stirring by a stirring scraper, and obtaining the environment-friendly coating after uniform mixing; this material mixing equipment makes each component can continuously stir the mixture through the stirring scraper blade that can longitudinal movement, ejection of compact tube head through can longitudinal movement can make reinforced position continuously change, the mixing between each component of being convenient for, make the stirring scraper blade can stir the component of the different degree of depth through the blending tank that can reciprocate, the stirring mixing effect has been promoted, make the even of mixing between each component of environmental protection coating, make the environmental protection coating degree of consistency that makes high, high quality, be favorable to the protection to wooden handicraft.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the structure of a material mixing apparatus according to the present invention;
FIG. 2 is a schematic view of the mixing section of the present invention;
FIG. 3 is a schematic structural view of a screw conveying rod and a screw sleeve in the invention;
FIG. 4 is a schematic view of the structure of the material conveying part in the present invention;
FIG. 5 is a schematic structural view of a discharge tube head according to the present invention;
FIG. 6 is a first perspective view of the stirring section of the present invention;
FIG. 7 is a second perspective view of the stirring section of the present invention;
FIG. 8 is an enlarged schematic view taken at A of FIG. 6 according to the present invention;
fig. 9 is an enlarged schematic view of fig. 7 at B in the present invention.
In the figure: 100. a mixing section; 200. a material conveying part; 300. a stirring section; 400. a mounting frame; 101. a mixing tank; 102. a first drive motor; 103. a first speed reducer; 104. a threaded conveyor bar; 105. a support plate; 106. a threaded sleeve; 107. a first slide plate; 108. a first slide rail; 109. supporting legs; 201. a gas delivery pump; 202. an air delivery pipe; 203. a charging tank; 204. a material conveying hose; 205. a material distributing branch pipe; 206. a discharge pipe head; 2061. a feed inlet; 2062. an exhaust port; 2063. a centrifugal cylinder; 2064. a discharging nozzle; 301. longitudinally mounting a rod; 302. a first transverse connecting rod; 303. a connecting seat; 304. a second transverse connecting rod; 305. a first linkage rod; 306. a second linkage rod; 307. a stirring scraper; 308. a second drive motor; 309. a second speed reducer; 310. a rack; 311. a gear; 312. a second slide rail; 313. a second slide plate.
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 creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1 to 9, the present embodiment is an environmental protection coating for a surface of a wood craft, which is prepared by the following steps:
step one, polishing treatment: after the surface of the wooden handicraft is polished by using the abrasive paper with the grain number of 400#, polishing is performed by using the abrasive paper with the grain number of 1500#, and the wooden handicraft is reserved;
step two, preparing the environment-friendly coating: the components of the environment-friendly coating are divided into solid raw materials and liquid raw materials according to forms, the liquid raw materials are respectively placed into a plurality of feeding tanks 203 of a material mixing device, valves on the feeding tanks 203 are opened, the liquid raw materials of the environment-friendly coating are released into material conveying hoses 204, the liquid raw materials of the environment-friendly coating are conveyed into a mixing tank 101 through conveying air flow conveyed by a conveying air pump 201, a first transverse connecting rod 302 and a second transverse connecting rod 304 are moved through operation of a second driving motor 308, so that positions of a discharging pipe head 206 and a stirring scraper 307 in an inner cavity of the mixing tank 101 are continuously changed, the liquid raw materials of the environment-friendly coating are stirred, the remaining solid raw materials are finally put into the mixing tank 101 after the liquid raw materials of the environment-friendly coating are uniformly mixed, the remaining solid raw materials are stirred through a stirring scraper 307, and after the liquid raw materials are uniformly mixed, obtaining the environment-friendly coating;
step three, forming an environment-friendly coating: and (3) uniformly coating the polished wood artware with an environment-friendly coating, and then putting the wood artware into an oven for drying treatment to obtain an environment-friendly coating on the surface of the wood artware.
The environment-friendly coating comprises the following components in parts by weight:
45 parts of fluorine-silicon modified acrylate emulsion, 10 parts of pure acrylic emulsion, 4 parts of film forming additive, 0.3 part of dispersing agent, 0.3 part of thickening agent, 0.2 part of antiseptic bactericide, 0.3 part of defoaming agent, 0.6 part of pH regulator and 10 parts of water.
The fluorine-silicon modified acrylate emulsion comprises the following specific steps:
the method comprises the following steps: mixing absolute ethyl alcohol and silicon dioxide aerogel micro powder in a mass ratio of 65:1, and then performing ultrasonic dispersion for 2 hours;
step two: heating the dispersed mixed solution of the silica aerogel micro powder and the ethanol to 65 ℃, adding a silane coupling agent while stirring, and reacting for 35 minutes to obtain a mixture A;
step three: adding the mixture A, perfluoroalkyl ethyl acrylate, methyl methacrylate, butyl acrylate, methacryloyloxyethyl trimethyl ammonium chloride and hydroxyethyl acrylate into a reaction kettle, uniformly mixing to obtain a mixture B, then adding an initiator accounting for 0.8% of the mass of the mixture B, adjusting the pH value to 8.0 by using 0.05% of sodium hydroxide, stirring for reacting for 2 hours, then adding an initiator accounting for 0.2% of the mass of the mixture B, reacting for 1 hour, and cooling the reactant to obtain the fluorosilicone modified acrylate emulsion.
Wherein the specific surface area of the silica aerogel micro powder is 650m2The granularity of the silicon dioxide aerogel micro powder is 20 nm; wherein the adding amount of the silane coupling agent is 1.2 times of the mass of the silica aerogel micro powder; the silane coupling agent is KH 550; the mixture A and perfluoroalkyl ethyl propyleneThe adding amount ratio of the acid ester, the methyl methacrylate, the butyl acrylate, the methacryloyloxyethyl trimethyl ammonium chloride and the hydroxyethyl acrylate is 1:15.6:14.8:8.5:10: 0.5; the initiator is azobisisobutyronitrile.
The film-forming additive is diethylene glycol monoethyl ether, and the dispersant is Guerban; the thickening agent is hydroxyethyl cellulose ether; the antiseptic bactericide is nano zinc oxide; the defoaming agent is tributyl phosphate; the pH regulator is diethanolamine.
The performance of the environment-friendly coating of the embodiment 1 is detected, and the detection result is as follows: adhesion test results (wood test piece): qualified; adhesion test results (aluminum alloy test pieces): qualified; salt spray test results (wood test piece): surface was unchanged at 720 hours; salt spray test results (aluminum alloy test pieces): surface was unchanged at 720 hours; therefore, the environmental-friendly coating of example 2 has good adhesion on the wood test piece and the aluminum alloy test piece, and has strong salt spray resistance.
Example 2:
referring to fig. 1 to 9, the present embodiment is an environmental protection coating for a surface of a wood craft, which is prepared by the following steps:
step one, polishing treatment: after the surface of the wooden handicraft is polished by using the abrasive paper with the grain number of 400#, polishing is performed by using the abrasive paper with the grain number of 1500#, and the wooden handicraft is reserved;
step two, preparing the environment-friendly coating: the components of the environment-friendly coating are divided into solid raw materials and liquid raw materials according to forms, the liquid raw materials are respectively placed into a plurality of feeding tanks 203 of a material mixing device, valves on the feeding tanks 203 are opened, the liquid raw materials of the environment-friendly coating are released into material conveying hoses 204, the liquid raw materials of the environment-friendly coating are conveyed into a mixing tank 101 through conveying air flow conveyed by a conveying air pump 201, a first transverse connecting rod 302 and a second transverse connecting rod 304 are moved through operation of a second driving motor 308, so that positions of a discharging pipe head 206 and a stirring scraper 307 in an inner cavity of the mixing tank 101 are continuously changed, the liquid raw materials of the environment-friendly coating are stirred, the remaining solid raw materials are finally put into the mixing tank 101 after the liquid raw materials of the environment-friendly coating are uniformly mixed, the remaining solid raw materials are stirred through a stirring scraper 307, and after the liquid raw materials are uniformly mixed, obtaining the environment-friendly coating;
step three, forming an environment-friendly coating: and (3) uniformly coating the polished wood artware with an environment-friendly coating, and then putting the wood artware into an oven for drying treatment to obtain an environment-friendly coating on the surface of the wood artware.
The environment-friendly coating comprises the following components in parts by weight:
65 parts of fluorosilicone modified acrylate emulsion, 15 parts of pure acrylic emulsion, 8 parts of film forming additive, 0.5 part of dispersing agent, 0.5 part of thickening agent, 0.4 part of anticorrosive bactericide, 0.5 part of defoaming agent, 0.8 part of pH regulator and 40 parts of water.
The fluorine-silicon modified acrylate emulsion comprises the following specific steps:
the method comprises the following steps: mixing absolute ethyl alcohol and silicon dioxide aerogel micro powder in a mass ratio of 88:1, and then performing ultrasonic dispersion for 3 hours;
step two: heating the dispersed mixed solution of the silica aerogel micro powder and the ethanol to 85 ℃, adding a silane coupling agent while stirring, and reacting for 45 minutes to obtain a mixture A;
step three: adding the mixture A, perfluoroalkyl ethyl acrylate, methyl methacrylate, butyl acrylate, methacryloyloxyethyl trimethyl ammonium chloride and hydroxyethyl acrylate into a reaction kettle, uniformly mixing to obtain a mixture B, then adding an initiator accounting for 0.8% of the mass of the mixture B, adjusting the pH value to 8.0 by using 0.05% of sodium hydroxide, stirring for reacting for 2 hours, then adding an initiator accounting for 0.2% of the mass of the mixture B, reacting for 1 hour, and cooling the reactant to obtain the fluorosilicone modified acrylate emulsion.
Wherein the specific surface area of the silica aerogel micro powder is 800m2The granularity of the silicon dioxide aerogel micro powder is 50 nm; wherein the adding amount of the silane coupling agent is 1.8 times of the mass of the silica aerogel micro powder; the silane coupling agent is KH 550; the mixture A, perfluoroalkyl ethyl acrylate, methyl methacrylate, butyl acrylate, methacryloyloxyethyl trimethyl ammonium chloride and acrylic acid hydroxylThe adding amount ratio of the ethyl ester is 1:15.6:14.8:8.5:10: 0.5; the initiator is azobisisobutyronitrile.
The film-forming auxiliary agent is propylene glycol butyl ether; the dispersant is one of fatty acid polyglycol esters; the thickening agent is hydroxyethyl cellulose ether; the antiseptic bactericide is nano zinc oxide; the defoaming agent is tributyl phosphate; the pH regulator is diethanolamine.
The performance of the environment-friendly coating of the embodiment 2 is detected, and the detection result is as follows: adhesion test results (wood test piece): qualified; adhesion test results (aluminum alloy test pieces): qualified; salt spray test results (wood test piece): surface was unchanged at 720 hours; salt spray test results (aluminum alloy test pieces): surface was unchanged at 720 hours; therefore, the environmental-friendly coating of example 2 has good adhesion on the wood test piece and the aluminum alloy test piece, and has strong salt spray resistance.
Experimental example 1:
respectively coating the environment-friendly coatings in the embodiments 1 and 2 on a wood test piece and an aluminum alloy test piece, wherein the aluminum alloy test piece is 6063, standing for 48 hours after the coatings are coated, testing after the coatings are completely cured to form a film, and performing an adhesion test and a neutral salt spray test on the environment-friendly coatings according to GB/T1720-; wherein, the adhesion test result is qualified, which means that the adhesion at the scratch position at 7 is all 1 grade.
Example 3:
referring to fig. 1 to 9, the material mixing apparatus in the present embodiment includes a mixing portion 100, a material conveying portion 200, a stirring portion 300, and a mounting frame 400, wherein the stirring portion 300 is installed on one side of the top of the mounting frame 400, the mixing portion 100 is installed below the stirring portion 300, the material conveying portion 200 is installed at one end of the top of the mounting frame 400, and one end of the material conveying portion 200 is installed on the stirring portion 300;
wherein the mixing part 100 comprises a mixing tank 101, a first driving motor 102, a first speed reducer 103, a threaded conveying rod 104, a supporting plate 105, a threaded sleeve 106, a first sliding plate 107, a first sliding rail 108 and a supporting leg 109, the bottom of the mixing tank 101 is arranged on a plurality of supporting legs 109, a plurality of supporting legs 109 are distributed on the bottom of the mixing tank 101 in a circular array, the supporting leg 109 is mounted at one end on a first slide plate 107, the first slide plate 107 is slidably connected to a first slide rail 108, the first slide rails 108 are installed on both sides of one side of the support plate 105, the first slide plate 107 is connected with the threaded sleeves 106 on the side away from the support legs 109, the threaded sleeve 106 is sleeved on the threaded conveying rod 104, the threaded sleeve 106 is in threaded connection with the threaded conveying rod 104, the top of the threaded conveying rod 104 is connected to an output shaft of a first speed reducer 103, and an input end of the first speed reducer 103 is connected to an output shaft of a first driving motor 102; the bottom ends of the threaded conveying rod 104 and the supporting plate 105 are fixedly arranged on the ground;
wherein, the material conveying part 200 comprises an air conveying pump 201, an air conveying pipe 202, a feeding tank 203, a material conveying hose 204, a material distribution branch pipe 205, a material outlet pipe head 206, a material inlet 2061, an air outlet 2062, a centrifuge tube 2063 and a material outlet nozzle 2064, the output end of the air conveying pump 201 is communicated to one end of the material conveying hose 204 through a pipeline, one side of the material conveying hose 204 is connected with a plurality of feeding tanks 203, the discharge port of the feeding tank 203 is provided with an electromagnetic valve, the material conveying hose 204 is far away from the bottom of one end of the feeding tank 203 and is provided with a plurality of material distribution branch pipes 205, the bottom end of the material distribution branch pipe 205 is connected with the material outlet pipe head 206, the material outlet pipe head 206 comprises a material inlet 2061, an air outlet 2062, a centrifuge tube 2063 and a material outlet nozzle 2064, the material inlet 2061 is installed at the top of, a fish tail-shaped discharge nozzle 2064 is arranged at the bottom of the centrifugal cylinder 2063; the gas conveying pump 201 and the feeding tank 203 are both arranged on the top of the mounting frame 400;
the stirring part 300 comprises longitudinal mounting rods 301, a first transverse connecting rod 302, a connecting seat 303, a second transverse connecting rod 304, a first linkage rod 305, a second linkage rod 306, a stirring scraper 307, a second driving motor 308, a second speed reducer 309, a rack 310, a gear 311, a second sliding rail 312 and a second sliding plate 313, wherein the first transverse connecting rod 302 and the second transverse connecting rod 304 are arranged between the two longitudinal mounting rods 301, two ends of the first transverse connecting rod 302 and the second transverse connecting rod 304 are connected to the longitudinal mounting rods 301 through the connecting seat 303, the rack 310 and the second sliding rail 312 are arranged on the inner side between the two longitudinal mounting rods 301, the two second sliding rails 312 are arranged on two sides of the rack 310, the second sliding rail 312 is connected with the second sliding plate 313 in a sliding manner, the second sliding plate 313 is arranged on the connecting seat 303, wherein the gear 311 is arranged on one side surface of the connecting seat 303 connected with two ends of the second transverse connecting rod 304, the gear 311 is located in an inner cavity of the sliding plate 313, the gear 311 is meshed with the rack 310, the gear 311 is sleeved on an output shaft of the second speed reducer 309, an input end of the second speed reducer 309 is connected to an output shaft of the second driving motor 308, two second linkage rods 306 are mounted at the bottom of the first transverse connecting rod 302, two first linkage rods 305 are mounted at the bottom of the second transverse connecting rod 304, and bottom ends of the two first linkage rods 305 and the second linkage rods 306 are respectively connected to one side of the stirring scraper 307; the two longitudinal mounting rods 301 are mounted on the mounting frame 400, the stirring scraper 307 is positioned right above the mixing tank 101, and one end of the material conveying hose 204, which is far away from the feeding tank 203, is mounted on one side of the material conveying hose 204;
referring to fig. 1 to 9, the working process of the material mixing apparatus in this embodiment for preparing the environmental protection coating is as follows:
the method comprises the following steps: the components of the environment-friendly coating are divided into solid raw materials and liquid raw materials according to forms, and the liquid raw materials are respectively placed into a plurality of feeding tanks 203 of material mixing equipment;
step two: starting a first driving motor 102, wherein the first driving motor 102 operates to drive a thread conveying rod 104 to rotate through a first speed reducer 103, and drives a first sliding plate 107 to ascend along a first sliding rail 108 through the meshed connection of the thread conveying rod 104 and a thread sleeve 106, so that the height of a supporting leg 109 is driven to ascend, the ascending of a mixing tank 101 is realized through a plurality of supporting legs 109, and a discharging pipe head 206 and a stirring scraper 307 are positioned in the inner cavity of the mixing tank 101;
step three: opening a valve on the feeding tank 203, releasing various liquid raw materials of the environment-friendly coating into the material conveying hose 204, starting the air conveying pump 201, operating the air conveying pump 201 to convey air flow to increase the internal pressure of the material conveying hose 204, and conveying the various liquid raw materials of the environment-friendly coating into the mixing tank 101;
step four: the second driving motor 308 is started, the second driving motor 308 operates to drive the gear 311 to rotate through the second speed reducer 309, and the gear 311 is meshed with the rack 310 to enable the second sliding plate 313 to slide on the second sliding rail 312, so that the first transverse connecting rod 302 and the second transverse connecting rod 304 are driven to move, the positions of the discharge pipe head 206 and the stirring scraper 307 in the inner cavity of the mixing tank 101 are continuously changed, and various liquid raw materials of the environment-friendly coating are stirred;
step five: after the various liquid raw materials of the environment-friendly coating are uniformly mixed, the rest solid raw materials are added into the mixing tank 101, stirred by the stirring scraper 307, and uniformly mixed, so that the environment-friendly coating is obtained.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (6)
1. The environment-friendly coating for the surface of the wood craft is characterized by being prepared by the following steps:
step one, polishing treatment: after the surface of the wooden handicraft is polished by using the abrasive paper with the grain number of 400#, polishing is performed by using the abrasive paper with the grain number of 1500#, and the wooden handicraft is reserved;
step two, preparing the environment-friendly coating: the components of the environment-friendly coating are divided into solid raw materials and liquid raw materials according to forms, the liquid raw materials are respectively placed into a plurality of feeding tanks (203) of a material mixing device, valves on the feeding tanks (203) are opened, the liquid raw materials of the environment-friendly coating are released into material conveying hoses (204), the liquid raw materials of the environment-friendly coating are conveyed into a mixing tank (101) through conveying air flow conveyed by a conveying air pump (201) in an operating mode, a first transverse connecting rod (302) and a second transverse connecting rod (304) are moved through operation of a second driving motor (308), so that positions of a discharging pipe head (206) and a stirring scraper (307) in an inner cavity of the mixing tank (101) are continuously changed, the liquid raw materials of the environment-friendly coating are stirred, the liquid raw materials of the environment-friendly coating are uniformly mixed, and finally the rest solid raw materials are put into the mixing tank (101), stirring by a stirring scraper (307), and uniformly mixing to obtain the environment-friendly coating;
step three, forming an environment-friendly coating: and (3) uniformly coating the polished wood artware with an environment-friendly coating, and then putting the wood artware into an oven for drying treatment to obtain an environment-friendly coating on the surface of the wood artware.
2. The environment-friendly coating for the surface of the wooden craft as claimed in claim 1, wherein the environment-friendly coating comprises the following components in parts by weight:
45-65 parts of fluorine-silicon modified acrylate emulsion, 10-15 parts of pure acrylic emulsion, 4-8 parts of film forming additive, 0.3-0.5 part of dispersing agent, 0.3-0.5 part of thickening agent, 0.2-0.4 part of antiseptic bactericide, 0.3-0.5 part of defoaming agent, 0.6-0.8 part of pH regulator and 10-40 parts of water.
3. The environment-friendly coating for the surface of the wooden craft as claimed in claim 2, wherein the fluorosilicone modified acrylate emulsion comprises the following specific steps:
the method comprises the following steps: mixing absolute ethyl alcohol and silicon dioxide aerogel micro powder in a mass ratio of 65-88: 1, and then performing ultrasonic dispersion for 2-3 hours;
step two: heating the dispersed mixed solution of the silica aerogel micro powder and ethanol to 65-85 ℃, adding a silane coupling agent while stirring, and reacting for 35-45 minutes to obtain a mixture A;
step three: adding the mixture A, perfluoroalkyl ethyl acrylate, methyl methacrylate, butyl acrylate, methacryloyloxyethyl trimethyl ammonium chloride and hydroxyethyl acrylate into a reaction kettle, uniformly mixing to obtain a mixture B, then adding an initiator accounting for 0.8% of the mass of the mixture B, adjusting the pH value to 8.0 by using 0.05% of sodium hydroxide, stirring for reacting for 2 hours, then adding an initiator accounting for 0.2% of the mass of the mixture B, reacting for 1 hour, and cooling the reactant to obtain the fluorosilicone modified acrylate emulsion.
4. The environment-friendly coating for the surface of the wooden craft as claimed in claim 3, wherein the specific surface area of the silica aerogel micro powder is 650-800 m2The particle size of the silicon dioxide aerogel micro powder is 20-50 nm; wherein the adding amount of the silane coupling agent is 1.2-1.8 times of the mass of the silica aerogel micro powder; the silane coupling agent is one of KH550, KH560, KH570 and isobutyl triethoxy silicon; the adding amount ratio of the mixture A to the perfluoroalkyl ethyl acrylate, the methyl methacrylate, the butyl acrylate, the methacryloyloxyethyl trimethyl ammonium chloride to the hydroxyethyl acrylate is 1:15.6:14.8:8.5:10: 0.5; the initiator is azobisisobutyronitrile.
5. The environment-friendly coating for the surface of the wooden craft as claimed in claim 2, wherein the film forming aid is one of propylene glycol, methoxy butanol, ethylene glycol monobutyl ether, propylene glycol butyl ether, dipropylene glycol dimethyl ether, diethylene glycol monoethyl ether, tripropylene glycol butyl ether; the dispersing agent is one of sodium dodecyl sulfate, methyl amyl alcohol, polyacrylamide, Guel gum and fatty acid polyglycol ester; the thickening agent is hydroxyethyl cellulose ether; the antiseptic bactericide is nano zinc oxide; the defoaming agent is tributyl phosphate; the pH regulator is diethanolamine.
6. The environment-friendly coating for the surface of the wooden artwork of claim 1, wherein the working process of preparing the environment-friendly coating by the material mixing equipment in the second step is as follows:
the method comprises the following steps: the components of the environment-friendly coating are divided into solid raw materials and liquid raw materials according to forms, and the liquid raw materials are respectively placed into a plurality of feeding tanks (203) of material mixing equipment;
step two: starting a first driving motor (102), wherein the first driving motor (102) runs to drive a thread conveying rod (104) to rotate through a first speed reducer (103), and drives a first sliding plate (107) to ascend along a first sliding rail (108) through meshing connection of the thread conveying rod (104) and a thread sleeve (106), so that the height of a supporting leg (109) is driven to ascend, the ascending of a mixing tank (101) is realized through a plurality of supporting legs (109), and a discharging pipe head (206) and a stirring scraper (307) are positioned in an inner cavity of the mixing tank (101);
step three: opening a valve on a feeding tank (203), releasing various liquid raw materials of the environment-friendly coating into a material conveying hose (204), starting a gas conveying pump (201), operating the gas conveying pump (201) to convey gas flow to increase the internal pressure of the material conveying hose (204), and conveying the various liquid raw materials of the environment-friendly coating into a mixing tank (101);
step four: starting a second driving motor (308), wherein the second driving motor (308) runs to drive a gear (311) to rotate through a second speed reducer (309), and the gear (311) is meshed with a rack (310) to be connected, so that a second sliding plate (313) slides on a second sliding rail (312) to drive a first transverse connecting rod (302) and a second transverse connecting rod (304) to move, the positions of a discharging pipe head (206) and a stirring scraper (307) in the inner cavity of the mixing tank (101) are continuously changed, and various liquid raw materials of the environment-friendly coating are stirred;
step five: and (3) after various liquid raw materials of the environment-friendly coating are uniformly mixed, adding the rest solid raw materials into the mixing tank (101), stirring by using a stirring scraper (307), and uniformly mixing to obtain the environment-friendly coating.
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