CN112251122A - Surface transparent finishing process without producing VOCs - Google Patents
Surface transparent finishing process without producing VOCs Download PDFInfo
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- CN112251122A CN112251122A CN202010979105.1A CN202010979105A CN112251122A CN 112251122 A CN112251122 A CN 112251122A CN 202010979105 A CN202010979105 A CN 202010979105A CN 112251122 A CN112251122 A CN 112251122A
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/02—Polyureas
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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
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
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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
- B05D7/14—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 metal, e.g. car bodies
- B05D7/16—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 metal, e.g. car bodies using synthetic lacquers or varnishes
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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
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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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
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Abstract
The invention provides a surface transparent finishing process without generating VOCS (volatile organic Compounds), belonging to the field of finishing processes, and comprising the following process flows: pretreating a steel plate; treating the surface of the steel plate; coating finishing paint on the outer side of the steel plate, baking and curing, wherein the finishing paint consists of 0.48% of a leveling agent A, 4.5% of butyl acetate, 86% of polyaspartic acid ester resin, 9% of cellulose acetate butyrate, 0.02% of a drier A, 62% of an isocyanate curing agent and 38% of butyl acetate; coating finish paint on the surface of the finishing paint; and (5) performing antiseptic treatment. The invention has the advantages that the finishing paint can greatly reduce the discharge of VOCs, and the new process does not generate VOCs after the finishing paint is coated, thereby greatly reducing the harm to the environment and human bodies.
Description
Technical Field
The invention belongs to the field of finishing processes, and particularly relates to a surface transparent finishing process without VOCs.
Background
Scribble the finishing paint on the metal surface, can play the effect of decorating to the metal, the finishing paint can be effectively dustproof antifouling, and the glossiness is high, and the wearability is high, can play the effect of protection to the metal, but traditional finishing paint and traditional process of paining can produce a large amount of VOCs, have produced harm to environmental protection and health.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a surface transparent finishing process without generating VOCs.
In order to solve the technical problems, the invention adopts the technical scheme that: a surface transparent finishing process without producing VOCs comprises the following process flows:
step one, pretreatment: dedusting the steel plate by adopting clean water;
step two, surface treatment: removing oil stains on the steel plate by using a degreasing agent, cleaning the steel plate by using a water cleaning agent, and treating the surface of the steel plate by adopting chromium-free passivation;
step three, painting treatment: coating finishing paint on the outer side of the steel plate, and baking and curing the finishing paint to form a finishing paint layer, wherein the finishing paint consists of the following components in parts by weight: 0.48 percent of flatting agent A, 4.5 percent of butyl acetate, 86 percent of polyaspartic acid ester resin, 9 percent of cellulose acetate butyrate, 0.02 percent of drier A, 62 percent of isocyanate curing agent and 38 percent of butyl acetate;
step four, coating finish paint: coating finish paint on the finishing paint;
step five, corrosion prevention treatment: and coating a corrosion-resistant material on the inner side of the steel plate, and curing the corrosion-resistant material to form a corrosion-resistant layer.
Further, 0.48% of the leveling agent A, 4.5% of butyl acetate, 86% of the polyaspartate resin, 9% of the cellulose acetate butyrate and 0.02% of the drier A are in a group A, and 68% of the cyanate curing agent and 32% of the butyl acetate are in a group B.
Further, the group A and the group B are mixed in a ratio of 3:1, and then filtered.
Further, the corrosion-resistant material in the fourth step consists of the following components in parts by weight: 22 parts of epoxy resin, 13 parts of acrylic resin, 9 parts of melamine formaldehyde resin, 7 parts of isothiazolinone compounds, 6 parts of pigment, 4 parts of suspension, 3 parts of dispersing agent, 2 parts of nano titanium dioxide, 2 parts of ammonia water, 2 parts of calcium carbonate, 2 parts of talcum powder, 1 parts of drier B, 1 part of titanium dioxide, 1 part of defoaming agent and 1 parts of flatting agent.
The invention has the advantages and positive effects that: by adopting the technical scheme, the discharge of VOCs is reduced by the finishing paint, VOCs cannot be generated by the mode of firstly coating the finishing paint and then coating the finish paint, and the harm to the environment and the human body is greatly reduced.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
As shown in fig. 1, the present embodiment provides a surface transparent masking process without producing VOCs, and the process flow is as follows:
example 1:
step one, pretreatment: dedusting the steel plate by adopting clean water;
step two, surface treatment: removing oil stains on the steel plate by using a degreasing agent, cleaning the steel plate by using a water cleaning agent, and treating the surface of the steel plate by adopting chromium-free passivation;
step three, painting treatment: coating finishing paint on the outer side of the steel plate, and baking and curing the finishing paint to form a finishing paint layer;
step four, coating finish paint: coating finish paint on the finishing paint;
step five, corrosion prevention treatment: and coating a corrosion-resistant material on the inner side of the steel plate, and solidifying the corrosion-resistant material to form a corrosion-resistant layer.
The finishing paint in the third step consists of the following components in parts by weight: 0.48 percent of flatting agent A, 4.5 percent of butyl acetate, 86 percent of polyaspartic acid ester resin, 9 percent of cellulose acetate butyrate, 0.02 percent of drier A, 68 percent of isocyanate curing agent and 32 percent of butyl acetate.
The manufacturing process of the finishing paint comprises the following steps:
(1) group A is as follows: 0.48% of flatting agent A, 4.5% of butyl acetate, 86% of polyaspartic acid ester resin, 9% of cellulose acetate butyrate and 0.02% of drier A;
(2) group B is as follows: 68% of cyanate curing agent and 32% of butyl acetate;
(3) mixing the raw materials of the group A, stirring uniformly and then filtering;
(4) mixing the raw materials of the group B, stirring uniformly and filtering;
(5) mixing the mixed group A and the mixed group B according to the ratio of 3:1, stirring uniformly and filtering.
Wherein the corrosion-resistant material in the fourth step consists of the following components in parts by weight: 22 parts of epoxy resin, 13 parts of acrylic resin, 9 parts of melamine formaldehyde resin, 7 parts of isothiazolinone compounds, 4 parts of suspension, 6 parts of pigment, 3 parts of dispersing agent, 2 parts of ammonia water, 2 parts of calcium carbonate, 2 parts of talcum powder, 1 parts of drier B, 1 part of titanium dioxide, 2 parts of nano titanium dioxide, 1 part of defoaming agent and B1 parts of flatting agent.
Wherein, the dispersant comprises the following components in parts by weight: 61 parts of propylene glycol ethyl ether, 68 parts of ethylene monomer, 18 parts of methacrylic acid, 18 parts of vinyl acetate and 3 parts of benzoyl peroxide.
The preparation process of the dispersing agent comprises the following steps:
(1) putting 61 parts of propylene glycol ethyl ether into a reaction container, stirring, introducing nitrogen, and heating to 120 ℃;
(2) mixing 68 parts of ethylene monomer, 18 parts of methacrylic acid, 18 parts of vinyl acetate and 3 parts of benzoyl peroxide, adding the mixture into the reaction container in the step (1) within 2.5 hours, and reacting at 110 ℃ for 1.2 hours;
(3) and (3) when the temperature in the step (2) is reduced to 60 ℃, adding 2 parts of ammonia water to obtain the dispersing agent.
Wherein the drier B consists of cobalt naphthenate, calcium naphthenate and zinc naphthenate in a weight ratio of 1:1.5: 2.
Wherein, the suspending agent consists of the following components in parts by weight: 36 parts of sodium alginate suspension, 21 parts of silica particle suspension, 6 parts of lithium bentonite suspension and 6 parts of sodium lignosulphonate suspension.
The manufacturing process of the corrosion-resistant material comprises the following steps:
(1) treating 2 parts of talcum powder, 2 parts of nano titanium dioxide, 2 parts of calcium carbonate and 1 part of titanium dioxide by using a surface treating agent, uniformly dispersing the talcum powder, the nano titanium dioxide, the calcium carbonate and the titanium dioxide by using a dispersing process, stirring the talcum powder, the nano titanium dioxide, the calcium carbonate and the titanium dioxide in a stirrer at the rotating speed of 280r/min, grinding the mixture for 38min, and grinding the mixture until the mixture reaches 58 nm to obtain a mixed solution A.
(2) Adding 7 parts of isothiazolinone compound, 6 parts of pigment, 3 parts of dispersing agent, flatting agent B1 and 1 part of defoaming agent into a high-speed dispersion machine, uniformly stirring, adding 22 parts of epoxy resin, 13 parts of acrylic resin, 9 parts of melamine formaldehyde resin and 4 parts of suspension, and stirring in the high-speed dispersion machine at the rotating speed of 1450r/min to obtain mixed liquid B.
(3) And adding the mixed solution B into the mixed solution A to obtain a mixed solution.
(4) And adding 2 parts of ammonia water and 1 parts of drier B into the mixed solution, and uniformly stirring to obtain the corrosion-resistant material.
Example 2:
step one, pretreatment: dedusting the steel plate by adopting clean water;
step two, surface treatment: removing oil stains on the steel plate by using a degreasing agent, cleaning the steel plate by using a water cleaning agent, and treating the surface of the steel plate by adopting chromium-free passivation;
step three, painting treatment: coating finishing paint on the outer side of the steel plate, and baking and curing the finishing paint to form a finishing paint layer;
step four, coating finish paint: coating finish paint on the finishing paint;
step five, corrosion prevention treatment: and coating a corrosion-resistant material on the inner side of the steel plate, and solidifying the corrosion-resistant material to form a corrosion-resistant layer.
The finishing paint in the third step consists of the following components in parts by weight: 0.48 percent of leveling agent A, 4.5 percent of butyl acetate, 81 percent of polyaspartic acid ester resin, 4 percent of cellulose acetate butyrate, 0.02 percent of drier A, 62 percent of isocyanate curing agent and 38 percent of butyl acetate.
The manufacturing process of the finishing paint comprises the following steps:
0.48 percent of leveling agent A, 4.5 percent of butyl acetate, 81 percent of polyaspartic acid ester resin, 4 percent of cellulose acetate butyrate, 0.02 percent of drier A, 62 percent of isocyanate curing agent and 38 percent of butyl acetate are all mixed, stirred evenly and filtered.
Wherein the corrosion-resistant material in the fourth step consists of the following components in parts by weight: 23 parts of epoxy resin, 9 parts of melamine formaldehyde resin, 7 parts of isothiazolinone compounds, 4 parts of suspension, 6 parts of pigment, 3 parts of dispersing agent, 2 parts of ammonia water, 2 parts of calcium carbonate, 2 parts of talcum powder, 2 parts of drier B1, 1 part of titanium dioxide, 2 parts of nano titanium dioxide, 1 part of defoaming agent and B1 parts of flatting agent.
Wherein, the dispersant comprises the following components in parts by weight: 61 parts of propylene glycol ethyl ether, 68 parts of ethylene monomer, 18 parts of methacrylic acid, 18 parts of vinyl acetate and 3 parts of benzoyl peroxide.
The preparation process of the dispersing agent comprises the following steps:
(4) putting 61 parts of propylene glycol ethyl ether into a reaction container, stirring, introducing nitrogen, and heating to 120 ℃;
(5) mixing 68 parts of ethylene monomer, 18 parts of methacrylic acid, 18 parts of vinyl acetate and 3 parts of benzoyl peroxide, adding the mixture into the reaction container in the step (1) within 2.5 hours, and reacting at 110 ℃ for 1.2 hours;
(6) and (3) when the temperature in the step (2) is reduced to 60 ℃, adding 2 parts of ammonia water to obtain the dispersing agent.
Wherein the drier B consists of cobalt naphthenate, calcium naphthenate and zinc naphthenate in a weight ratio of 1:1.5: 2.
Wherein, the suspending agent consists of the following components in parts by weight: 36 parts of sodium alginate suspension, 21 parts of silica particle suspension, 6 parts of lithium bentonite suspension and 6 parts of sodium lignosulphonate suspension.
The manufacturing process of the corrosion-resistant material comprises the following steps:
(1) treating 2 parts of talcum powder, 2 parts of nano titanium dioxide, 2 parts of calcium carbonate and 1 part of titanium dioxide by using a surface treating agent, uniformly dispersing the talcum powder, the nano titanium dioxide, the calcium carbonate and the titanium dioxide by using a dispersing process, stirring the talcum powder, the nano titanium dioxide, the calcium carbonate and the titanium dioxide in a stirrer at the rotating speed of 280r/min, grinding the mixture for 38min, and grinding the mixture until the mixture reaches 58 nm to obtain a mixed solution A.
(2) Adding 7 parts of isothiazolinone compound, 6 parts of pigment, 3 parts of dispersing agent, flatting agent B1 and 1 part of defoaming agent into a high-speed dispersion machine, uniformly stirring, adding 22 parts of epoxy resin, 9 parts of melamine formaldehyde resin and 4 parts of suspension, and stirring in the high-speed dispersion machine at the rotating speed of 1450r/min to obtain mixed liquid B.
(3) And adding the mixed solution B into the mixed solution A to obtain a mixed solution.
(4) And adding 2 parts of ammonia water and 1 parts of drier B into the mixed solution, and uniformly stirring to obtain the corrosion-resistant material.
Example 3:
step one, pretreatment: dedusting the steel plate by adopting clean water;
step two, surface treatment: removing oil stains on the steel plate by using a degreasing agent, cleaning the steel plate by using a water cleaning agent, and treating the surface of the steel plate by adopting chromium-free passivation;
step three, painting treatment: coating finishing paint on the outer side of the steel plate, and baking and curing the finishing paint to form a finishing paint layer;
step four, coating finish paint: coating finish paint on the finishing paint;
step five, corrosion prevention treatment: and coating a corrosion-resistant material on the inner side of the steel plate, and solidifying the corrosion-resistant material to form a corrosion-resistant layer.
The finishing paint in the third step consists of the following components in parts by weight: 0.48 percent of flatting agent A, 4.5 percent of butyl acetate, 81 percent of polyaspartic acid ester resin, 4 percent of cellulose acetate butyrate, 0.02 percent of drier A, 68 percent of isocyanate curing agent and 32 percent of butyl acetate.
The manufacturing process of the finishing paint comprises the following steps:
(1) group A is as follows: 0.48% of flatting agent A, 4.5% of butyl acetate, 81% of polyaspartate resin, 4% of cellulose acetate butyrate and 0.02% of drier A;
(2) group B is as follows: 68% of cyanate curing agent and 32% of butyl acetate;
(3) mixing the raw materials of the group A, stirring uniformly and then filtering;
(4) mixing the raw materials of the group B, stirring uniformly and filtering;
(5) mixing the mixed group A and the mixed group B according to the ratio of 3:1, stirring uniformly and filtering.
Wherein the corrosion-resistant material in the fourth step consists of the following components in parts by weight: 22 parts of epoxy resin, 13 parts of acrylic resin, 9 parts of melamine formaldehyde resin, 7 parts of isothiazolinone compounds, 4 parts of suspension, 6 parts of pigment, 3 parts of dispersing agent, 2 parts of ammonia water, 2 parts of calcium carbonate, 2 parts of talcum powder, 1 parts of drier B, 1 part of titanium dioxide, 2 parts of nano titanium dioxide, 1 part of defoaming agent and B1 parts of flatting agent.
Wherein, the dispersant comprises the following components in parts by weight: 61 parts of propylene glycol ethyl ether, 68 parts of ethylene monomer, 18 parts of vinyl acetate and 3 parts of benzoyl peroxide.
The preparation process of the dispersing agent comprises the following steps:
(7) putting 61 parts of propylene glycol ethyl ether into a reaction container, stirring, introducing nitrogen, and heating to 120 ℃;
(8) mixing 68 parts of ethylene monomer, 18 parts of vinyl acetate and 3 parts of benzoyl peroxide, adding the mixture into the reaction container in the step (1) within 2.5 hours, and reacting at 110 ℃ for 1.2 hours;
(9) and (3) when the temperature in the step (2) is reduced to 60 ℃, adding 2 parts of ammonia water to obtain the dispersing agent.
Wherein the drier B consists of cobalt naphthenate, calcium naphthenate and zinc naphthenate in a weight ratio of 1:1.5: 2.
Wherein, the suspending agent consists of the following components in parts by weight: 36 parts of sodium alginate suspension, 21 parts of silica particle suspension, 6 parts of lithium bentonite suspension and 6 parts of sodium lignosulphonate suspension.
The manufacturing process of the corrosion-resistant material comprises the following steps:
(1) treating 2 parts of talcum powder, 2 parts of nano titanium dioxide, 2 parts of calcium carbonate and 1 part of titanium dioxide by using a surface treating agent, uniformly dispersing the talcum powder, the nano titanium dioxide, the calcium carbonate and the titanium dioxide by using a dispersing process, stirring the talcum powder, the nano titanium dioxide, the calcium carbonate and the titanium dioxide in a stirrer at the rotating speed of 280r/min, grinding the mixture for 38min, and grinding the mixture until the mixture reaches 58 nm to obtain a mixed solution A.
(2) Adding 7 parts of isothiazolinone compound, 6 parts of pigment, 3 parts of dispersing agent, flatting agent B1 and 1 part of defoaming agent into a high-speed dispersion machine, uniformly stirring, adding 22 parts of epoxy resin, 13 parts of acrylic resin, 9 parts of melamine formaldehyde resin and 4 parts of suspension, and stirring in the high-speed dispersion machine at the rotating speed of 1450r/min to obtain mixed liquid B.
(3) And adding the mixed solution B into the mixed solution A to obtain a mixed solution.
(4) And adding 2 parts of ammonia water and 1 parts of drier B into the mixed solution, and uniformly stirring to obtain the corrosion-resistant material.
The invention has the beneficial effects that: the finishing paint reduces the discharge of VOCs, and VOCs cannot be generated by firstly coating the finishing paint and then coating the finish paint, so that the harm to the environment and the human body is greatly reduced.
While one or more embodiments of the present invention have been described in detail, the description is in the nature of preferred embodiments of the invention and is not intended to limit the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (4)
1. A surface transparent finishing process without VOCs is characterized by comprising the following process flows:
step one, pretreatment: dedusting the steel plate by adopting clean water;
step two, surface treatment: removing oil stains on the steel plate by using a degreasing agent, cleaning the steel plate by using a water cleaning agent, and treating the surface of the steel plate by adopting chromium-free passivation;
step three, painting treatment: coating finishing paint on the outer side of the steel plate, and baking and curing the finishing paint to form a finishing paint layer, wherein the finishing paint consists of the following components in parts by weight: 0.48 percent of flatting agent A, 4.5 percent of butyl acetate, 86 percent of polyaspartic acid ester resin, 9 percent of cellulose acetate butyrate, 0.02 percent of drier A, 62 percent of isocyanate curing agent and 38 percent of butyl acetate;
step four, coating finish paint: coating finish paint on the finishing paint;
step five, corrosion prevention treatment: and coating a corrosion-resistant material on the inner side of the steel plate, and curing the corrosion-resistant material to form a corrosion-resistant layer.
2. The process of claim 1, wherein the leveling agent A is 0.48%, the butyl acetate is 4.5%, the polyaspartate resin is 86%, the cellulose acetate butyrate is 9%, and the drier A is 0.02% of group A, and the cyanate curing agent is 68% and the butyl acetate is 32% of group B.
3. The process of claim 2, wherein group a and group B are mixed in a 3:1 ratio and then filtered.
4. The process according to claim 1, wherein the corrosion-resistant material of step four comprises the following components in parts by weight: 22 parts of epoxy resin, 13 parts of acrylic resin, 9 parts of melamine formaldehyde resin, 7 parts of isothiazolinone compounds, 6 parts of pigment, 4 parts of suspension, 3 parts of dispersing agent, 2 parts of nano titanium dioxide, 2 parts of ammonia water, 2 parts of calcium carbonate, 2 parts of talcum powder, 1 parts of drier B, 1 part of titanium dioxide, 1 part of defoaming agent and 1 parts of flatting agent.
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| CN202010979105.1A CN112251122A (en) | 2020-09-17 | 2020-09-17 | Surface transparent finishing process without producing VOCs |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115109503A (en) * | 2022-07-08 | 2022-09-27 | 厦门双瑞船舶涂料有限公司 | Quick-drying type fan blade pinhole repairing agent and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108822684A (en) * | 2018-06-01 | 2018-11-16 | 泉州永春佳鼎农业机械有限公司 | A kind of corrosion resistant coating and preparation method thereof |
| CN111253857A (en) * | 2020-03-27 | 2020-06-09 | 河南东澳化工有限公司 | High-solid-content low-VOC (volatile organic compound) super-curing finishing varnish and preparation method thereof |
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2020
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|---|---|---|---|---|
| CN108822684A (en) * | 2018-06-01 | 2018-11-16 | 泉州永春佳鼎农业机械有限公司 | A kind of corrosion resistant coating and preparation method thereof |
| CN111253857A (en) * | 2020-03-27 | 2020-06-09 | 河南东澳化工有限公司 | High-solid-content low-VOC (volatile organic compound) super-curing finishing varnish and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115109503A (en) * | 2022-07-08 | 2022-09-27 | 厦门双瑞船舶涂料有限公司 | Quick-drying type fan blade pinhole repairing agent and preparation method thereof |
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Application publication date: 20210122 |