CN109971315B - Automobile paint surface repairing paint and repairing process thereof - Google Patents
Automobile paint surface repairing paint and repairing process thereof Download PDFInfo
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- CN109971315B CN109971315B CN201910258581.1A CN201910258581A CN109971315B CN 109971315 B CN109971315 B CN 109971315B CN 201910258581 A CN201910258581 A CN 201910258581A CN 109971315 B CN109971315 B CN 109971315B
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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
- B05D3/02—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 by baking
- B05D3/0254—After-treatment
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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
- B05D3/12—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 by mechanical means
-
- 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
- B05D5/005—Repairing damaged coatings
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/04—Epoxynovolacs
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/10—Epoxy resins modified by unsaturated compounds
-
- 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
- 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
-
- 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
-
- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
-
- 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
Abstract
The invention discloses an automobile paint surface repairing paint and a repairing process thereof, wherein the automobile paint surface repairing paint comprises a filling component and a primer component, wherein the filling component is arranged at the bottom of a scratch and is used for filling the scratch of the automobile paint surface, and the primer component is arranged on the surface of the filling component and is used for further filling the automobile paint surface; the repair paint is set into the filling component and the bottom connecting component, the filling component with high solid content and good fluidity is used for automatically filling the position to be repaired, the step of polishing by atomic ash is avoided, meanwhile, the bonding force between the filling component and the automobile body metal plate is greatly improved by preprocessing the automobile body metal plate, the position to be repaired of the automobile body is further filled by the bottom connecting component, the bottom connecting component slightly dissolves the original automobile paint surface and the filling component which are in contact with the bottom connecting component, the color difference of a cross-over interface is reduced, the color transition is smoother, and the bonding force between the filling component and the bottom connecting component is improved.
Description
Technical Field
The invention belongs to the technical field of automobile maintenance and repair, and particularly relates to automobile paint repair paint and a repair process thereof.
Background
In order to protect the automobile body, so that the automobile body has good gloss and is not corroded for a long time, the automobile body surface can be coated with the automobile paint surface, a good protection effect is achieved, the external light of an automobile can be improved, the automobile paint surface mainly comprises a primer and a finish paint, wherein the primer is a paint with a high filler content, the finish paint is a paint with a low filler content, the primer is mainly used for filling an uneven sheet metal automobile body to form a smooth surface, then the finish paint is coated on the primer to form a weather-resistant and acid-alkali-resistant protective layer with high hardness, in the prior art, the automobile body surface paint is mainly processed and prepared by taking resin, additives and solvents as main materials, when the automobile body is scratched with certain strength, the paint layer on the automobile surface can be scraped off, white marks are left, the metal layer of the automobile body can be seriously even exposed, and if the automobile body is not processed in time, the automobile, moreover, the automobile often gets dirty and needs to be cleaned in time when the automobile is in outdoor activities for a long time, and a lot of tiny scratches are easily left on the automobile body due to the defects that hard particles are attached to the paint surface of the automobile and cleaning tools are used in the cleaning process, so that the appearance of the automobile is not affected well.
In the prior art, in order to cover up scratches, the scratches need to be filled up, the scratches are filled up by atomic ash first, and then the surface of the atomic ash is coated with finish paint, so that repair is realized, but when the atomic ash is used for filling the scratches, constant polishing is needed, cleaning is difficult after polishing, a layer of solidified atomic ash film is easily formed around the scratches, large-area color difference is caused, and meanwhile, the atomic ash is composed of a large amount of filler and a small amount of curing agent, so that the drying time is long during curing, the drying effect is poor, deformation, local looseness and other conditions are easy to occur.
Disclosure of Invention
The invention aims to provide an automobile paint surface repairing paint and a repairing process thereof.
The technical problems to be solved by the invention are as follows:
1. in the prior art, when the scratch on the automobile paint surface is repaired by the atomic ash, the bonding force between the repaired part and other positions is insufficient, and the phenomenon that cracks or even shedding appear between the paints at the repaired part is easy to appear;
2. among the prior art, when mending the car finish scratch, mainly adopt the putty to mend, it is longer to utilize the putty to carry out the time of polishing, and at the in-process of polishing, the dust granule that air or staff carried mixes easily wherein causes the position that the putty was filled to have tiny arch, influences the repair effect, need polish for a long time simultaneously and make the putty realize the even packing to the scratch, very consuming time power.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides an automobile paint surface repairing paint, includes packing component and connects end component, the packing component sets up and is used for filling the paint surface scratch of automobile in the scratch bottom, connect end component to set up and further fill automobile paint surface at packing component surface, wherein the packing component is processed by the following parts by weight's raw materials and is prepared:
10-15 parts of epoxy acrylic resin, 10-15 parts of novolac epoxy resin, 30-40 parts of cenospheres, 0.5-1.5 parts of photoinitiator, 2-5 parts of curing agent, 10-15 parts of nano graphite powder, 3-5 parts of neodecanoic acid glycidyl ether and 3-5 parts of alkylene glycidyl ether;
the curing agent is 2-methyl-tetraethylimidazole, so that the phenolic polyepoxy resin has good heat resistance, higher thermal deformation temperature and curing hardness, and the phenolic polyepoxy resin has higher hardness after being cured, so that the filling component can play a good bedding filling effect;
the nano graphite powder plays a role in lubricating while playing a role in filling, reduces the adhesion and nodulation of hollow microspheres in the filling component, and improves the fluidity of the filling component;
the neodecanoic acid glycidyl ether and the alkylene glycidyl ether can effectively dilute the phenolic aldehyde polyepoxy resin, have no special smell, have a wetting effect on the filler, and simultaneously have good anti-crystallization performance, so that the spraying effect is prevented from being influenced by the crystallization of mixed components;
the preparation method of the filling component comprises the following steps:
s1, adding a photoinitiator, a curing agent and an external additive into a mixed solution of neodecanoic acid glycidyl ether and alkylene glycidyl ether, mixing and stirring uniformly, adding into the phenolic polyepoxy resin, and stirring to obtain diluted phenolic polyepoxy resin for later use;
s2, mixing and stirring the nano graphite powder and the hollow microspheres uniformly, adding the mixture into the diluted novolac epoxy resin obtained in the previous step, stirring and mixing uniformly, adding the epoxy acrylic resin into the mixture while stirring, and continuously stirring and mixing uniformly to obtain the filling component.
The filling component has good fluidity, and can automatically fill the scratch part by utilizing the fluidity of the filling component in practical application, complete filling can be realized without repeated polishing, and meanwhile, the filling component has certain hardness by virtue of the photocuring effect of the epoxy acrylic resin, so that the filling component is prevented from being gathered to a low position by gravity in the subsequent thermocuring process to influence the filling uniformity of the filling component;
the bottom connecting component is prepared by processing the following raw materials in parts by weight:
30-40 parts of epoxy acrylic resin, 10-15 parts of glycidyl ester epoxy resin, 10-15 parts of glycidyl amine epoxy resin, 0.4-1 part of photoinitiator, 10-20 parts of nano silicon dioxide, 4-6 parts of curing agent, 4-7 parts of dichloromethane, 2-3 parts of xylene, 2-3 parts of butyl ester, 2-5 parts of silicone and 0.5-3 parts of silane coupling agent;
the mixed resin of the glycidyl ester epoxy resin and the glycidyl amine epoxy resin has good cold resistance, heat resistance, weather resistance and bonding performance;
the primer component is also added with pigment, and the addition amount of the pigment is added according to the color of the car body, so that the color of the primer component is close to the color of the car body;
the preparation method of the bottom connecting component comprises the following steps:
SS1, mixing and stirring the photoinitiator, the curing agent, the silicone, the silane coupling agent, the dichloromethane, the xylene and the butyl ester uniformly to obtain a mixed solvent;
SS2, preliminarily mixing epoxy acrylic resin, glycidyl ester epoxy resin and glycidyl amine epoxy resin, adding the mixture into a mixed solvent, mixing, adding nano silicon dioxide, mixing uniformly, and defoaming under negative pressure to obtain the bottom-connecting component.
The bottom-connecting component can dissolve the filling component and the contact position of the original automobile paint surface and the bottom-connecting component in a micro-amount manner, so that the color difference of the contact interface of the original automobile paint surface and the bottom-connecting component can be obviously reduced, the color transition is more smooth, and the combining capacity between the bottom-connecting component and the filling component can be improved.
External additives are added into the filling component and the bottom connecting component, and the external additives comprise a light stabilizer, an antioxidant, a flatting agent and a defoaming agent;
the curing agent is 2-methyl-tetraethylimidazole;
the photoinitiators in the filling component and the bottom contact component are both 1-hydroxycyclohexyl phenyl ketone;
the repair process using the repair paint for the automobile finish comprises the following steps:
polishing along the scratch by using polishing abrasive paper, polishing the scratch and the automobile paint surface around the scratch to form a repair groove, exposing the automobile body at the bottom of the paint surface, washing the repair groove by using absolute ethyl alcohol and then drying;
secondly, trimming a notch which has the same shape as the repairing groove and is larger than the opening of the repairing groove on the shielding paper, enabling the notch on the shielding paper to correspond to the repairing groove, spraying a coupling agent solution to the repairing groove, wiping the coupling agent solution on the automobile paint surface at the edge of the repairing groove by using dry filter paper, wiping the coupling agent solution by using filter paper soaked by acetic acid aqueous solution with the pH value of 6-6.5, and forming a coupling agent coating in the repairing groove after drying;
thirdly, after masking paper is attached to the periphery of the repairing groove, spraying a layer of filling component into the repairing groove, scraping the filling component on the automobile paint surface at the edge of the repairing groove by using a rubber scraper, then attaching shading paper to the periphery of the repairing groove, primarily curing the filling component by ultraviolet irradiation, and further curing the filling component by using a baking lamp, wherein the rubber scraper is a rubber sheet made of soft rubber materials and provided with a flat side;
step four, after masking paper is attached to the periphery of the repairing groove, spraying a layer of primer component on the surface of the solidified filling component, scraping the primer component on the automobile paint surface at the edge of the repairing groove by using a rubber scraper, spraying transition treatment paste along the contact position of the primer component and the original paint surface after ultraviolet light irradiation and preliminary solidification, utilizing sand paper to draw a circle along the contact position of the primer component and the original paint surface for polishing, stopping polishing after 6-10min, washing with neutral deionized water, drying at a low temperature, wherein the drying temperature is not more than 60 ℃, and curing the primer component by using a baking lamp after drying;
and fifthly, polishing the surface of the bottom connecting component to be flat, coating a layer of varnish on the flat surface of the bottom connecting component, and curing and polishing to finish paint surface repair.
The shading paper is opaque black kraft paper;
the coupling agent solution is a coupling agent deionized water solution with the concentration of 1% -3%, and the coupling agent is an alkaline coupling agent;
the transitional treatment paste is formed by ultrasonically and uniformly mixing dichloromethane, hollow microspheres, stearic acid, a dispersing agent, attapulgite and a pigment, wherein the mass ratio of the hollow microspheres to the attapulgite to the stearic acid to the dichloromethane is 1:1-2:0.1-0.3:3-5, the addition amount of the pigment is adapted according to the color of a maintained vehicle body, so that the color of the transitional treatment paste is close to that of the vehicle body, the hollow microspheres have the function of frosting, and the attapulgite is used as a tackifier to enable the transitional treatment paste to be a paste;
according to the method, a metal car body of a part to be repaired is treated through a coupling agent, then a layer of filling component is sprayed to fill the scratch position, compared with a mode of directly filling atomic ash, polishing is not needed in the process, the filling component is combined with a metal layer more firmly through a coupling agent layer, the condition that the part to be repaired is impacted and falls off is avoided, meanwhile, in the fourth step, the contact position of a bottom connecting component and an original paint surface is polished through transition treatment paste, part of car finish paint on the surface of the position and the bottom connecting component are dissolved, and color difference of the position is reduced through polishing.
The invention has the beneficial effects that:
1. according to the invention, the repair paint is set into the filling component and the bottom connecting component, the filling component with high solid content and good fluidity is used for automatically filling the position to be repaired, so that the step of polishing by using putty for a long time is avoided, and meanwhile, the bonding force between the filling component and the vehicle body metal plate is greatly improved by preprocessing the vehicle body metal plate;
2. according to the invention, the position to be repaired of the automobile body is further filled by the bottom-connecting component, and meanwhile, the bottom-connecting component can slightly dissolve the original automobile paint surface and the filling component which are in contact with the bottom-connecting component, so that the color difference of a cross-over interface is reduced, the color transition is smoother, and the binding force between the filling component and the bottom-connecting component is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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:
the automobile paint repair paint comprises a filling component and a bottom connecting component, wherein the filling component is coated at the bottom of a scratch and is used for filling the scratch of the paint surface of an automobile, the bottom connecting component is sprayed on the surface of the filling component to further fill the automobile paint surface, and the filling component is prepared from the following raw materials in parts by weight:
10 parts of epoxy acrylic resin, 15 parts of novolac epoxy resin, 30 parts of hollow microspheres, 0.5 part of photoinitiator, 4 parts of curing agent, 15 parts of nano graphite powder, 5 parts of neodecanoic acid glycidyl ether and 3 parts of alkylene glycidyl ether;
the bottom connecting component is prepared by processing the following raw materials in parts by weight:
35 parts of epoxy acrylic resin, 10 parts of glycidyl ester epoxy resin, 10 parts of glycidyl amine epoxy resin, 1 part of photoinitiator, 15 parts of nano-silica, 4 parts of curing agent, 6 parts of dichloromethane, 2 parts of xylene, 3 parts of butyl ester, 3 parts of silicone and 1.5 parts of silane coupling agent;
the photoinitiators are all 1-hydroxycyclohexyl phenyl ketone;
the curing agent is 2-methyl-tetraethylimidazole;
external additives are added into the filling component and the bottom connecting component, and the external additives comprise a light stabilizer, an antioxidant, a flatting agent and a defoaming agent;
the preparation process of the filling component comprises the following steps:
s1, adding a photoinitiator, a curing agent and an external additive into a mixed solution of neodecanoic acid glycidyl ether and alkylene glycidyl ether, mixing and stirring uniformly, adding into the phenolic polyepoxy resin, and stirring to obtain diluted phenolic polyepoxy resin for later use;
s2, mixing and stirring the nano graphite powder and the hollow microspheres uniformly, adding the mixture into the diluted novolac epoxy resin obtained in the previous step, stirring and mixing uniformly, adding the epoxy acrylic resin into the mixture while stirring, and continuously stirring and mixing uniformly to obtain the filling component.
The preparation method of the bottom connecting component comprises the following steps:
SS1, mixing and stirring the photoinitiator, the curing agent, the silicone, the silane coupling agent, the dichloromethane, the xylene and the butyl ester uniformly to obtain a mixed solvent;
SS2, preliminarily mixing epoxy acrylic resin, glycidyl ester epoxy resin and glycidyl amine epoxy resin, adding the mixture into a mixed solvent, mixing, adding nano silicon dioxide, mixing uniformly, and defoaming under negative pressure to obtain the bottom-connecting component.
The repair process by using the repair paint for the automobile finish comprises the following steps:
polishing along the scratch by using polishing abrasive paper, polishing the scratch and the automobile paint surface around the scratch to form a repair groove, exposing the automobile body at the bottom of the paint surface, washing the repair groove by using absolute ethyl alcohol and then drying;
secondly, trimming a gap on the shielding paper, wherein the shape of the gap is the same as that of the repairing groove, the area of the gap is larger than that of the opening of the repairing groove, the gap on the shielding paper corresponds to the repairing groove, spraying a coupling agent solution to the repairing groove, wiping the coupling agent solution on the automobile paint surface at the edge of the repairing groove by using dry filter paper, wiping the coupling agent solution by using filter paper soaked by acetic acid aqueous solution with the pH value of 6, and forming a coupling agent coating in the repairing groove after drying and drying;
thirdly, after masking paper is attached to the periphery of the repairing groove, spraying a layer of filling component into the repairing groove, scraping the filling component on the automobile paint surface at the edge of the repairing groove by using a rubber scraper, then attaching shading paper to the periphery of the repairing groove, primarily curing the filling component by ultraviolet irradiation, and further curing the filling component by using a baking lamp, wherein the rubber scraper is a rubber sheet made of soft rubber materials and provided with a flat side;
step four, after masking paper is attached to the periphery of the repairing groove, spraying a layer of primer component on the surface of the solidified filling component, scraping the primer component on the automobile paint surface at the edge of the repairing groove by using a rubber scraper, spraying transition treatment paste along the contact position of the primer component and the original paint surface after ultraviolet light irradiation and preliminary solidification, utilizing sand paper to draw a circle along the contact position of the primer component and the original paint surface for polishing, stopping polishing after 6-10min, washing with neutral deionized water, drying at a low temperature, wherein the drying temperature is not more than 60 ℃, and curing the primer component by using a baking lamp after drying;
and fifthly, polishing the surface of the bottom connecting component to be flat, coating a layer of varnish on the flat surface of the bottom connecting component, and curing and polishing to finish paint surface repair.
The shading paper is opaque black kraft paper.
The coupling agent solution is a coupling agent deionized water solution with the concentration of 2%, and the coupling agent is triaminopropyltriethoxysilane.
The transition treatment paste is prepared by uniformly mixing dichloromethane, hollow microspheres, stearic acid, a dispersing agent, attapulgite and a pigment by ultrasonic waves, wherein the mass ratio of the hollow microspheres to the attapulgite to the stearic acid to the dichloromethane is 1:2:0.2: 5.
Example 2:
the automobile paint repair paint comprises a filling component and a bottom connecting component, wherein the filling component is coated at the bottom of a scratch and is used for filling the scratch of the paint surface of an automobile, the bottom connecting component is sprayed on the surface of the filling component to further fill the automobile paint surface, and the filling component is prepared from the following raw materials in parts by weight:
15 parts of epoxy acrylic resin, 10 parts of novolac epoxy resin, 35 parts of hollow microspheres, 1 part of photoinitiator, 3 parts of curing agent, 15 parts of nano graphite powder, 4 parts of neodecanoic acid glycidyl ether and 4 parts of alkylene glycidyl ether;
the bottom connecting component is prepared by processing the following raw materials in parts by weight:
30 parts of epoxy acrylic resin, 15 parts of glycidyl ester epoxy resin, 10 parts of glycidyl amine epoxy resin, 0.5 part of photoinitiator, 10 parts of nano-silica, 4 parts of curing agent, 7 parts of dichloromethane, 2 parts of xylene, 2 parts of butyl ester, 2 parts of silicone and 1 part of silane coupling agent;
the photoinitiators are all 1-hydroxycyclohexyl phenyl ketone;
the curing agent is 2-methyl-tetraethylimidazole;
external additives are added into the filling component and the bottom connecting component, and the external additives comprise a light stabilizer, an antioxidant, a flatting agent and a defoaming agent;
the preparation process of the filling component comprises the following steps:
s1, adding a photoinitiator, a curing agent and an external additive into a mixed solution of neodecanoic acid glycidyl ether and alkylene glycidyl ether, mixing and stirring uniformly, adding into the phenolic polyepoxy resin, and stirring to obtain diluted phenolic polyepoxy resin for later use;
s2, mixing and stirring the nano graphite powder and the hollow microspheres uniformly, adding the mixture into the diluted novolac epoxy resin obtained in the previous step, stirring and mixing uniformly, adding the epoxy acrylic resin into the mixture while stirring, and continuously stirring and mixing uniformly to obtain the filling component.
The preparation method of the bottom connecting component comprises the following steps:
SS1, mixing and stirring the photoinitiator, the curing agent, the silicone, the silane coupling agent, the dichloromethane, the xylene and the butyl ester uniformly to obtain a mixed solvent;
SS2, preliminarily mixing epoxy acrylic resin, glycidyl ester epoxy resin and glycidyl amine epoxy resin, adding the mixture into a mixed solvent, mixing, adding nano silicon dioxide, mixing uniformly, and defoaming under negative pressure to obtain the bottom-connecting component.
The repair process by using the repair paint for the automobile finish comprises the following steps:
polishing along the scratch by using polishing abrasive paper, polishing the scratch and the automobile paint surface around the scratch to form a repair groove, exposing the automobile body at the bottom of the paint surface, washing the repair groove by using absolute ethyl alcohol and then drying;
secondly, trimming a notch which is the same as the repairing groove in shape and larger than the opening of the repairing groove on the shielding paper, enabling the notch on the shielding paper to correspond to the repairing groove, spraying a coupling agent solution to the repairing groove, wiping the coupling agent solution on the automobile paint surface at the edge of the repairing groove by using dry filter paper, wiping the coupling agent solution by using filter paper soaked by acetic acid aqueous solution with the pH value of 6.5, and forming a coupling agent coating in the repairing groove after drying;
thirdly, after masking paper is attached to the periphery of the repairing groove, spraying a layer of filling component into the repairing groove, scraping the filling component on the automobile paint surface at the edge of the repairing groove by using a rubber scraper, then attaching shading paper to the periphery of the repairing groove, primarily curing the filling component by ultraviolet irradiation, and further curing the filling component by using a baking lamp, wherein the rubber scraper is a rubber sheet made of soft rubber materials and provided with a flat side;
step four, after masking paper is attached to the periphery of the repairing groove, spraying a layer of primer component on the surface of the solidified filling component, scraping the primer component on the automobile paint surface at the edge of the repairing groove by using a rubber scraper, spraying transition treatment paste along the contact position of the primer component and the original paint surface after ultraviolet light irradiation and preliminary solidification, utilizing sand paper to draw a circle along the contact position of the primer component and the original paint surface for polishing, stopping polishing after 6-10min, washing with neutral deionized water, drying at a low temperature, wherein the drying temperature is not more than 60 ℃, and curing the primer component by using a baking lamp after drying;
and fifthly, polishing the surface of the bottom connecting component to be flat, coating a layer of varnish on the flat surface of the bottom connecting component, and curing and polishing to finish paint surface repair.
The shading paper is opaque black kraft paper.
The coupling agent solution is a coupling agent deionized water solution with the concentration of 3%, and the coupling agent is triaminopropyltriethoxysilane.
The transition treatment paste is prepared by uniformly mixing dichloromethane, hollow microspheres, stearic acid, a dispersing agent, attapulgite and a pigment by ultrasonic waves, wherein the mass ratio of the hollow microspheres to the attapulgite to the stearic acid to the dichloromethane is 1:1:0.1: 4.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (6)
1. The automobile paint repair paint is characterized by comprising a filling component and a bottom connecting component, wherein the filling component is sprayed at the bottom of a scratch and is used for filling the scratch of the paint surface of an automobile, the bottom connecting component is sprayed on the surface of the filling component to further fill the paint surface of the automobile, and the filling component is prepared from the following raw materials in parts by weight:
10-15 parts of epoxy acrylic resin, 10-15 parts of novolac epoxy resin, 30-40 parts of cenospheres, 0.5-1.5 parts of photoinitiator, 2-5 parts of curing agent, 10-15 parts of nano graphite powder, 3-5 parts of neodecanoic acid glycidyl ether and 3-5 parts of alkylene glycidyl ether;
the bottom connecting component is prepared by processing the following raw materials in parts by weight:
30-40 parts of epoxy acrylic resin, 10-15 parts of glycidyl ester epoxy resin, 10-15 parts of glycidyl amine epoxy resin, 0.4-1 part of photoinitiator, 10-20 parts of nano silicon dioxide, 4-6 parts of curing agent, 4-7 parts of dichloromethane, 2-3 parts of xylene, 2-3 parts of butyl ester, 2-5 parts of silicone and 0.5-3 parts of silane coupling agent;
external additives are added into the filling component and the bottom connecting component, and the external additives comprise a light stabilizer, an antioxidant, a flatting agent and a defoaming agent;
the preparation process of the filling component comprises the following steps:
s1, adding a photoinitiator, a curing agent and an external additive into a mixed solution of neodecanoic acid glycidyl ether and alkylene glycidyl ether, mixing and stirring uniformly, adding into the phenolic polyepoxy resin, and stirring to obtain diluted phenolic polyepoxy resin for later use;
s2, mixing and stirring the nano graphite powder and the hollow microspheres uniformly, adding the mixture into the diluted novolac polyepoxy resin obtained in the previous step, stirring and mixing uniformly, adding the epoxy acrylic resin into the mixture while stirring, and continuously stirring and mixing uniformly to obtain a filling component;
the preparation method of the bottom connecting component comprises the following steps:
SS1, mixing and stirring the photoinitiator, the curing agent, the silicone, the silane coupling agent, the dichloromethane, the xylene and the butyl ester uniformly to obtain a mixed solvent;
SS2, preliminarily mixing epoxy acrylic resin, glycidyl ester epoxy resin and glycidyl amine epoxy resin, adding the mixture into a mixed solvent, mixing, adding nano silicon dioxide, mixing uniformly, and defoaming under negative pressure to obtain the bottom-connecting component.
2. The automotive paint repair lacquer according to claim 1, wherein the photoinitiator is 1-hydroxycyclohexyl phenyl ketone, and the curing agent is 2-methyl-tetraethylimidazole.
3. The automotive finish repair paint according to claim 1, wherein the repair process using the automotive finish repair paint comprises the following steps:
polishing along the scratch by using polishing abrasive paper, polishing the scratch and the automobile paint surface around the scratch to form a repair groove, exposing the automobile body at the bottom of the paint surface, washing the repair groove by using absolute ethyl alcohol and then drying;
secondly, trimming a notch which has the same shape as the repairing groove and is larger than the opening of the repairing groove on the shielding paper, enabling the notch on the shielding paper to correspond to the repairing groove, spraying a coupling agent solution to the repairing groove, wiping the coupling agent solution on the automobile paint surface at the edge of the repairing groove by using dry filter paper, wiping the coupling agent solution by using filter paper soaked by acetic acid aqueous solution with the pH value of 6-6.5, and forming a coupling agent coating in the repairing groove after drying;
thirdly, after masking paper is attached to the periphery of the repairing groove, spraying a layer of filling component into the repairing groove, scraping the filling component on the automobile paint surface at the edge of the repairing groove by using a rubber scraper, then attaching shading paper to the periphery of the repairing groove, primarily curing the filling component by ultraviolet irradiation, and further curing the filling component by using a baking lamp, wherein the rubber scraper is a rubber sheet made of soft rubber materials and provided with a flat side;
step four, after masking paper is attached to the periphery of the repairing groove, spraying a layer of primer component on the surface of the solidified filling component, scraping the primer component on the automobile paint surface at the edge of the repairing groove by using a rubber scraper, spraying transition treatment paste along the contact position of the primer component and the original paint surface after ultraviolet light irradiation and preliminary solidification, utilizing sand paper to draw a circle along the contact position of the primer component and the original paint surface for polishing, stopping polishing after 6-10min, washing with neutral deionized water, drying at a low temperature, wherein the drying temperature is not more than 60 ℃, and curing the primer component by using a baking lamp after drying;
and fifthly, polishing the surface of the bottom connecting component to be flat, coating a layer of varnish on the flat surface of the bottom connecting component, and curing and polishing to finish paint surface repair.
4. The repair paint for automobile paint surfaces according to claim 3, wherein the shading paper is opaque black kraft paper.
5. The repair paint as claimed in claim 3, wherein the coupling agent solution is a deionized water solution of 1-3% coupling agent, and the coupling agent is an alkaline coupling agent.
6. The automobile paint surface repairing paint according to claim 3, characterized in that the transition treatment paste is prepared by uniformly mixing dichloromethane, hollow microspheres, stearic acid, a dispersing agent, attapulgite and a pigment through ultrasonic sound, wherein the mass ratio of the hollow microspheres to the attapulgite to the stearic acid to the dichloromethane is 1:1-2:0.1-0.3: 3-5.
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| CN201910258581.1A CN109971315B (en) | 2019-04-01 | 2019-04-01 | Automobile paint surface repairing paint and repairing process thereof |
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| CN201910258581.1A CN109971315B (en) | 2019-04-01 | 2019-04-01 | Automobile paint surface repairing paint and repairing process thereof |
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| CN114345576A (en) * | 2022-01-14 | 2022-04-15 | 武汉发乐迷汽车科技有限责任公司 | Spraying machine and spraying method for maintaining automobile paint surface |
| CN116603716B (en) * | 2023-04-28 | 2024-03-29 | 宁波市融嘉轻合金科技有限公司 | Die casting surface treatment method, system, intelligent terminal and storage medium |
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| EP0549116A3 (en) * | 1991-12-20 | 1993-08-04 | W.R. Grace & Co.-Conn. | Dual curing composition and use thereof |
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|---|---|---|---|---|
| JPS61247765A (en) * | 1985-04-25 | 1986-11-05 | Nippon Paint Co Ltd | Paint resin composition |
| CN104419298B (en) * | 2013-08-21 | 2017-02-08 | 展辰新材料集团股份有限公司 | Double-cured UV roller priming and preparation method thereof |
| JP5993828B2 (en) * | 2013-09-30 | 2016-09-14 | オリジン電気株式会社 | UV curable coating composition with excellent abrasion resistance, coating film forming method, coated article |
| CN105017954B (en) * | 2015-08-17 | 2017-10-24 | 宁昊昊 | Automobile coating bottom is made up the difference agent and automobile finish restorative procedure |
| CN106634555B (en) * | 2017-01-13 | 2019-07-23 | 北京涑酷特威科技有限公司 | A kind of bis- solidification automobile repairing paints of UV and preparation method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0549116A3 (en) * | 1991-12-20 | 1993-08-04 | W.R. Grace & Co.-Conn. | Dual curing composition and use thereof |
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Effective date of registration: 20221216 Address after: No. 5, Xinxian Road, Private Science and Technology Park, Ranghulu District, Daqing, Heilongjiang 163000 Patentee after: Daqing Yuewei Automobile Repair Co.,Ltd. Address before: 518109 505, Fengtian science and technology building, Xuegang North Road, Qinghu community, Longhua street, Longhua District, Shenzhen, Guangdong Province Patentee before: Shenzhen Jinyuan Industrial Co.,Ltd. |