KR101802246B1 - metallic coating composition - Google Patents

Abstract

The present invention is to provide a metallic coating composition having improved deposition properties and brightness when the metallic coating composition is coated on a coating object. The metallic coating composition to form a metallic coating layer by being applied onto the surface of the coating object made of resin and by being dried according to the present invention comprises: a main agent part including a liquid metal paste and a binder containing a vinyl acetate resin; a reactive supplementary agent part including a leveling agent containing a polysiloxane-based compound, an anti-precipitating agent containing a synthetic amide powder, a dispersant containing a chloride, a plasticizer containing an ester-based compound, a UV screening agent containing titanium oxide and zinc oxide, a UV-absorbing agent containing benzophenone, a hardening accelerator containing a phenol-based compound, and a surface contamination preventing agent containing modified polypropylene; and a dilution solvent part including one selected from the group consisting of a polar solvent, a nonpolar solvent and a mixture thereof, wherein the main agent part and the dilution solvent part are mixed at a weight ratio of 1:4-5.

Description

Metallic Coating Composition < RTI ID = 0.0 >

TECHNICAL FIELD The present invention relates to a metallic coating composition, and more particularly, to a metallic coating composition having improved deposition feeling and brightness upon application to a coating object.

In general, plastic materials are used extensively not only for automobile bumpers, automotive interiors, but also for communication equipment, computers and household appliances. Such a plastic product is easy to be molded by heat, and can be manufactured in various shapes, and has advantages of being durable and shock-absorbing and lightweight.

On the other hand, plastic products are painted on the outer surface so as to prevent the appearance of appearance and contamination and scratches. In recent years, in recent years, the use of metallic paints has been increasing in the coating process in order to impart a metallic feeling to plastic materials.

In detail, a conventional metallic paint is formed by mixing a light-scattering inorganic pigment or a metallic pigment in a paint to give a metallic effect to the surface of the plastic material. For example, a metal powder such as an aluminum flake or an aluminum paste is included in a conventional metallic paint, so that a metal feel can be imparted to the plastic coated product.

However, the conventional metallic paint has a problem that the above-described metal powder is mixed to give a metallic effect, but the surface uniformity and the deposition feeling as a mirror are lowered due to the particle size of the metal powder.

Further, the outer shape of a product made of a plastic material can be deformed by a solvent included in a conventional metallic paint, and the paint itself is difficult to adhere to the plastic material due to low surface tension.

Thus, a method of partially improving the adhesion by applying a top coating to the top surface of the conventional metallic paint has been disclosed. However, in such a case, there is a problem that the metallic feel is lowered as the brightness of the metallic powder is lowered.

On the other hand, a method of depositing a chromium plating by electroplating on a plastic material has been partially disclosed. Such a chromium plating deposition method has an advantage of improving the deposition feeling and has an excellent metal feeling, but it has a problem that it is harmful to the environment and human body in the process, is expensive, and the work process is complicated.

Korean Patent No. 10-0434838

Disclosure of Invention Technical Problem [8] In order to solve the above problems, the present invention provides a metallic coating composition having improved deposition feeling and brightness upon application to a coating object.

In order to solve the above-described problems, the present invention provides a paint comprising: a main part including a binder and a liquid metal paste including a vinyl acetate resin so as to be coated and dried on the surface of a resin-coated object to form a metallic paint layer; A leveling agent comprising a polysiloxane-based compound, an anti-settling agent comprising a synthetic amide powder, a dispersant containing a chloride, a plasticizer containing an ester compound, a sunscreen agent containing titanium oxide or zinc oxide, A reaction auxiliary agent part comprising a curing accelerator containing a phenolic compound and a surface contaminant preventing agent comprising a modified polypropylene; And a diluting solvent part which is selected from the group consisting of a polar solvent, a non-polar solvent and a mixture thereof, wherein the main part and the diluting solvent part are mixed at a weight ratio of 1: 4 to 5, Wherein the reaction part comprises 7 to 13% by weight of the binder and 1 to 10% by weight of the liquid metal paste, based on the total weight of the metallic coating composition, 0.5 to 5% by weight of the dispersant, 1 to 10% by weight of the plasticizer, 0.1 to 2% by weight of the ultraviolet blocking agent, 0.1 to 2% To 2 wt% of the ultraviolet absorber, 0.5 to 3 wt% of the curing accelerator, and 1 to 5 wt% of the surface antifouling agent.

Here, the diluting solvent part is contained in an amount of 60 to 70% by weight based on the total weight of the metallic coating composition, and the diluting solvent part is selected from the group consisting of toluene, ethyl acetate, methyl isobutyl ketone, cyclohexanone, butyl ceroussoleb, diisobutyl ketone, And at least one selected from the group consisting of

The binder may be any one selected from the group consisting of an acrylic resin, a nitrocellulose resin, a vinyl acetate copolymer resin, an epoxy resin, a urethane resin, an urethane resin and a mixture thereof. The liquid metal paste has an average particle size of 4 To 20 [micro] m.

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The dispersant may be any chloride selected from the group consisting of an aliphatic amine salt, an ammonium salt, an alkyl sulfonate, a polyaminoamide and its phosphate, an alkyl phosphate ester, and a mixture thereof, and the plasticizer may be 2-ethylhexyl Tri (n-hexyl) trimellitate, tri (heptyl, nonyl) trimellitate, tri (n-hexyl) trimellitate, di Wherein the ultraviolet light blocking agent is at least one selected from the group consisting of titanium monoxide, titanium dioxide, triethanolamine, triethanolamine, triethanolamine, trimethylolpropane triethanolate, Titanium oxide, titanium dioxide, titanium dioxide, zinc oxide, zinc oxide, and mixtures thereof. , And the ultraviolet absorber is any one selected from the group consisting of a benzotriazole system, a benzophenone system, an anilide oxalate system, a cyanoacrylate system, and a mixture thereof, and the curing accelerator is selected from the group consisting of nonylphenol, bisphenol, It is preferable to provide one of them.

Through the above solution, the metallic coating composition according to the present invention provides the following effects.

First, the liquid metal paste can be dispersed and mixed evenly as the diluting solvent portion is mixed at a larger weight ratio than the main portion, and the metallic coating layer formed on the surface of the object to be coated after the diluting solvent portion is volatilized It is possible to provide a metallic effect with high brightness while improving the dimensional accuracy.

Second, the degree of dispersion of the liquid metal paste is further improved by the leveling agent and the dispersant, and the settling of the liquid metal paste by the anti-settling agent is prevented in a state of being applied to the object to be coated, The metallic effect is excellent and the economical efficiency can be remarkably improved.

Third, since the reaction subcomponent such as the surface contaminant inhibitor is mixed, the metallic coating composition is applied to the object to be coated, thereby improving stain resistance, scratch resistance and abrasion resistance without additional top coating, Since the object to be coated is prevented from being deformed, the productivity and the quality of the product can be remarkably improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a photograph showing an appearance of a coated object coated with a metallic coating composition according to an embodiment of the present invention, in comparison with a conventional example. FIG.
2 is a flow chart illustrating a method in which a metallic coating composition according to an embodiment of the present invention is applied to an object to be coated;
3 is a photograph showing a test result of evaluation items on physical properties of a coating object coated with a metallic coating composition according to an embodiment of the present invention.

Hereinafter, a metallic coating composition according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. The metallic coating composition according to the present invention is applied and dried on the surfaces of various coating materials made of a synthetic resin such as ABS, PC-ABS, PC and PC-PBT to form a metallic coating layer, Can be given. Here, the fact that the metallic effect is given means that it is possible to provide a gloss effect inherent to a metal material even if it is not a product made of a metal material. That is, even if various molded articles are manufactured from a synthetic resin material which is light in weight and excellent in moldability, providing the aesthetic feeling of metal luster corresponding to the metal product, the satisfaction of the consumer can be remarkably improved along with the upgrading of the product.

In the present invention, it is preferable that the metallic coating composition is applied to the surface of the object using a spray gun, but it may be painted using a brush or a roller on the surface of the object to be coated. It is also possible that the coating material is applied to the metallic coating composition which is provided in a liquid phase as it is deposited or transferred onto the surface of the coating object by pad printing.

FIG. 1 is a photograph showing the appearance of a coated object coated with a metallic coating composition according to an embodiment of the present invention, in comparison with a conventional example.

At this time, the conventional example is prepared by a known chromium plating deposition method, and the metallic coating composition formed according to the composition ratio described later according to the present invention is applied by spray spraying to the surface of the object to be coated. Here, the object to be coated was prepared as a molded article made of the same ABS resin material. Then, the conventional example and the method of the present invention were visually observed to compare surface gloss and smoothness.

As shown in FIG. 1, comparing the front surface of the conventional example with the front surface of the present invention, it can be visually confirmed that the front surface gloss of the present invention is better. Therefore, the metallic coating composition according to the present invention can provide a metallic effect with high brightness to the object to be coated while the workability is easy by spraying using a spray gun as compared with the conventional chromium plating vapor deposition method. As a result, a molded article to which a high-quality metal feeling is imparted can be manufactured, thereby making it possible to improve the purchasing desire of the purchaser, and the satisfaction can be remarkably improved.

In contrast to the prior art in which the back surface of the conventional example is compared with the rear surface of the present invention, the metallic coating layer is formed on the front surface, which is required to be painted, unlike the conventional art in which a plating layer is formed until the rear surface is substantially unnecessary. As a result, the use amount of the metallic coating composition is reduced, so that the economical efficiency can be remarkably improved.

Meanwhile, the metallic coating composition according to the present invention preferably includes a main part, a reaction part, and a diluting solvent part.

Here, the diluent solvent is preferably one selected from the group consisting of a polar solvent, a nonpolar solvent, and a mixture thereof. Further, it is more preferable that the diluting solvent part is provided by mixing at least one polar solvent and at least one non-polar solvent.

In detail, when the diluting solvent part is provided as a polar solvent, the drying speed of the metallic coating composition is excessively shortened due to the volatilization rate, and thus it is difficult to uniformly coat the surface of the object to be coated. In addition, when the diluting solvent part is provided as a non-polar solvent, the drying may be delayed and uneven due to the delay of drying in a state where the metallic coating composition is coated on the surface of the object to be coated. Accordingly, when the polar solvent and the non-polar solvent are mixed and used, the time of the application and curing after the application of the subject matter to the surface of the subject matter through the difference in volatilization rates of the respective solvents can be adjusted. The diluent solvent may be selected from the group consisting of toluene, ethyl acetate, methyl isobutylketone, cyclohexanone, butylcellosolve, diisobutylketone, and mixtures thereof. And at least one selected from the group consisting of

At this time, it is preferable that the metallic coating composition is contained in an amount of 60 to 70% by weight based on the total weight of the metallic coating composition. In detail, if the diluting solvent portion is contained in an amount of less than 60% by weight based on the total weight of the metallic coating composition, the usage amount of the main portion and the reaction portion increases and the economical efficiency is lowered and the thickness of the metallic coating layer is increased The dimensional precision of the object to be coated becomes low. In addition, the metallic coating layer may be contaminated due to the deterioration of the miscibility between the main part and the reaction part, which will be described later. On the other hand, when the diluting solvent portion exceeds 70% by weight, physical properties of the subject portion and deformation of the surface of the object to be coated are generated, and the usage amount of the subject portion is relatively decreased, thereby reducing the metallic effect. Therefore, it is preferable that the diluting solvent part is contained in an amount of 60 to 70% by weight based on the total weight of the metallic coating composition.

Furthermore, it is preferable that the topical portion and the diluting solvent portion are mixed in a weight ratio of 1: 4 to 5. As a result, the thickness of the metallic coating layer formed on the surface of the object to be coated after the evaporation of the diluting solvent is completed is formed as a thin film, so that dimensional accuracy of the object to be coated can be remarkably improved. In addition, even if the metallic coating layer is formed as a thin film, the liquid metallic paste contained in the main body portion is uniformly dispersed, so that a metallic effect with high brightness can be provided. In addition, even when the metallic coating composition is sprayed through the spray gun, since the weight ratio of the diluting solvent portion is larger than that of the main portion, the mixture can be uniformly sprayed without being clumped, so that the coating workability can be remarkably improved.

Preferably, the subject portion includes a binder containing a vinyl acetate resin and a liquid metal paste.

In detail, the binder may be an acrylic resin, a nitrocellulose resin, a vinyl acetate copolymer resin, an epoxy resin, a urethane resin, an urethane resin acryl-urethane resin, and mixtures thereof.

At this time, the binder is included so that the metallic coating composition can be stably bonded to the surface of the object to be coated made of the synthetic resin material to be formed as the metallic coating layer. In addition, flexibility and thermal shock resistance can be imparted to the metallic coating composition to prevent degeneration of the metallic coating composition or deformation of the metallic coating layer due to heat.

Here, the binder is preferably contained in an amount of 7 to 13% by weight based on the total weight of the metallic coating composition. In detail, when the binder is contained in an amount of less than 7% by weight based on the total weight of the metallic coating composition, adhesion of the metallic coating composition is deteriorated and the forming ability and hardness of the metallic coating layer are lowered. On the other hand, if the binder is more than 13% by weight based on the total weight of the metallic coating composition, coating workability using a spray or a roller is lowered, and the thickness of the metallic coating layer is increased, and the dimensional accuracy of the coated object is lowered. Further, the luminance is lowered by precipitation of the liquid metal paste.

Therefore, the binder is preferably contained in an amount of 7 to 13% by weight based on the total weight of the metallic coating composition so that the metallic coating composition stably adheres to the surface of the object to be coated, and dimensional accuracy is maintained.

The liquid metal paste may be aluminum, silver, zinc, copper, nickel, titanium, or an alloy paste thereof. The liquid metal paste may be preferably a liquid aluminum paste having good handling properties and being economical. Here, the liquid aluminum paste may include an aluminum powder having an average particle size of 1 占 퐉 or more, more preferably an average particle size of 4 to 20 占 퐉.

At this time, the liquid metal paste is preferably contained in an amount of 1 to 10% by weight based on the total weight of the metallic coating composition. In detail, when the liquid metal paste is contained in an amount of less than 1% by weight based on the total weight of the metallic coating composition, the luminance is lowered and it is difficult to provide a metallic effect. On the other hand, if the liquid metal paste exceeds 10% by weight based on the total weight of the metallic coating composition, the manufacturing cost is increased and the wettability with the other mixture is lowered and the forming ability of the metallic coating layer is lowered. Accordingly, the liquid metal paste is preferably contained in an amount of 1 to 10% by weight based on the total weight of the metallic coating composition.

Preferably, the reaction part comprises a leveling agent, an anti-settling agent, a dispersing agent, a plasticizer, an ultraviolet screening agent, an ultraviolet absorber, a curing accelerator, and a surface antifouling agent.

Here, the leveling agent may include a polysiloxane compound, and may be included in an amount of 0.1 to 4 wt% based on the total weight of the metallic coating composition.

Specifically, the polysiloxane-based leveling agent is preferably a silicon leveling agent having a polysiloxane skeleton so that the metallic coating composition is applied to the surface of the object to be coated so as to improve the lowering of the surface tension and the spreadability. Therefore, as the smoothness of the metallic coating composition is improved, diffused reflection of the metallic coating layer can be prevented. Accordingly, since the liquid metal paste is used in a minimum amount, it is economical and high-brightness metallic effect is provided, and the aesthetic quality of the product can be remarkably improved.

Here, the leveling agent is not particularly limited as long as it contains the polysiloxane-based compound, but commercially available products such as BYK-306, BYK-341 (BYK-chemie) and TEGO WET 270 (DEGUSSA AG) Can be used.

Leveling agent
(weight%) Less than 0.1 0.1 to 4 Exceeding 4 Smoothness Bad
(Uneven coating surface) Great Good Polish Bad
(Low gloss) Great Good

Table 1 is a table showing smoothness and gloss according to the weight percentage of the leveling agent. Here, the smoothness and gloss were evaluated by visually observing the metallic coating layer formed after spraying the prepared metallic coating composition on the surface of the sample made of synthetic resin, with the leveling agent included as shown in the above table.

If the leveling agent is contained in an amount of less than 0.1% by weight based on the total weight of the metallic coating composition, it is difficult to provide smoothness improving effect and gloss is lowered. On the other hand, even if the leveling agent exceeds 4% by weight based on the total weight of the metallic coating composition, the smoothness improvement effect can not be further expected, so that the economical efficiency is lowered. Therefore, it is preferable that the leveling agent is contained in an amount of 0.1 to 4% by weight based on the total weight of the metallic coating composition.

The anti-settling agent includes the synthetic amide powder, and is preferably contained in an amount of 0.5 to 5 wt% based on the total weight of the metallic coating composition.

Specifically, the anti-settling agent is included to adjust the viscosity of the metallic coating composition to prevent settling of the liquid metal paste. Accordingly, the brightness of the metallic paint layer can be remarkably improved as the liquid metal paste is uniformly dispersed on the surface of the object to be coated.

The anti-settling agent may be a known anti-settling agent and is not particularly limited. Commercially available products such as 'SH-350' and 'DISPARLON 6900 20X' (CUSUMOTO chemicals) may be used.

Anti-settling agent
(weight%) Less than 0.5 0.5 to 5 Greater than 5 Smoothness Bad
(Uneven coating surface) Great Bad
(Uneven coating surface) Polish Bad
(Low gloss) Great Bad
(Low gloss)

Table 2 is a table showing the smoothness and gloss according to the weight percentage of the anti-settling agent. The smoothness and gloss were evaluated by visually observing the metallic coating layer formed after spraying the prepared metallic coating composition on the surface of the sample made of synthetic resin containing the anti-settling agent as shown in the above table.

If the sedimentation inhibitor is contained in an amount less than 0.5% by weight based on the total weight of the metallic coating composition, the effect of preventing settlement of the liquid metal paste is insufficient and the thickness of the metallic coating layer is unevenly formed, . On the other hand, if the sedimentation inhibitor exceeds 5 wt% based on the total weight of the metallic coating composition, the viscosity of the metallic coating composition is excessively increased and the wettability is lowered. As a result, the forming ability of the metallic coating layer is deteriorated due to spreading or flowing down of the metallic coating composition applied to the surface of the object to be coated. Therefore, it is preferable that the anti-settling agent is included in an amount of 0.5 to 5% by weight based on the total weight of the metallic coating composition so that the metallic coating layer has a uniform thickness.

The dispersant may be a chloride, and preferably 0.5 to 5% by weight based on the total weight of the metallic coating composition.

In detail, the dispersant is preferably a chloride selected from the group consisting of an aliphatic amine salt, an ammonium salt, an alkyl sulfonate, a polyaminoamide and a phosphate, an alkyl phosphate ester, and a mixture thereof. Since such a dispersant is included so that each mixture can be uniformly dispersed when the metallic coating composition is mixed, a metallic effect of high luminance can be provided even if the metallic coating layer is formed to have a small thickness.

At this time, if the dispersant is contained in an amount of less than 0.5% by weight or more than 5% by weight based on the total weight of the metallic coating composition, the degree of dispersion between the mixture may be lowered, resulting in defects such as stains in the metallic coating layer.

The plasticizer includes an ester compound, more preferably a phthalate ester compound. Specifically, the plasticizer is selected from the group consisting of 2-ethylhexyl phthalate, Di-isononyl phthalate, Di-isobutyl phthalate, Di-isodecyl phthalate, Tri (n-hexyl) trimellitate, tri (n-oxyl, n-decyl) trimellitate, tri Tri (n-octyl) trimellitate, triisononyl trimellitate, triisobutyltrimellitate, triisobutyltrimellitate, triisobutyltrimellitate, Tri-Isodecyl Trimellitate, and mixtures thereof. [0033] The term " compound "

Herein, the plasticizer enhances the thermoplasticity of the binder to facilitate drying and adhesion of the metallic coating layer, and improves the mixing property when the metallic coating composition is mixed to improve the adhesiveness upon application to the surface of the coating object . In addition, the metallic coating composition can have improved physical properties such as heat resistance, cold resistance and flame resistance, and the durability of the metallic coating layer can be remarkably improved.

In this case, the plasticizer is preferably contained in an amount of 1 to 10% by weight based on the total weight of the metallic coating composition. In detail, when the plasticizer is contained in an amount of less than 1% by weight, the metallic paint layer easily peels off the surface of the object to be coated, and if it exceeds 10% by weight, the surface of the object to be coated, May result in failure.

The ultraviolet screening agent may include titanium oxide or zinc oxide, preferably 0.1 to 2% by weight. Here, the ultraviolet shielding agent prevents the yellowing of the metallic coating layer by protecting the metallic coating layer and the surface of the coating object by ultraviolet rays by physically scattering and reflecting ultraviolet rays by the titanium oxide or the zinc oxide. In detail, the ultraviolet screening agent may be any one oxide selected from the group consisting of titanium monoxide, titanium dioxide, titanium peroxide, zinc oxide, zinc oxide, and mixtures thereof.

If the ultraviolet screening agent is contained in an amount of less than 0.1% by weight based on the total weight of the metallic coating composition, ultraviolet ray shielding effect is insufficient and yellowing occurs in the metallic coating layer. On the other hand, if the ultraviolet screening agent exceeds 2% by weight based on the total weight of the metallic coating composition, the wettability of the metallic coating composition is lowered, so that the coating operation is difficult and the metallic coating layer can be formed nonuniformly. In addition, the metallic effect may be deteriorated due to a relatively reduced amount of the mixture of the main portion and the diluting solvent portion. Therefore, the ultraviolet screening agent is preferably included in an amount of 0.1 to 2% by weight based on the total weight of the metallic coating composition so as to provide a metallic effect with high brightness while preventing yellowing of the metallic coating layer.

In addition, the ultraviolet absorber is included to absorb the ultraviolet light irradiated to the metallic coating layer and disperse it as heat energy to prevent the yellowing of the metallic coating layer, and the benzotriazole based, benzophenone based, aniline oxalate based, cyano acrylate based And a mixture thereof.

At this time, it is preferable that 0.1 to 2% by weight is included in the total weight of the metallic coating composition.

The ultraviolet absorber may be mixed with other compounds contained in the metallic coating composition and applied to the surface of the object to be coated. However, the ultraviolet absorber may be first applied to the surface of the object to be coated, and the remaining compound The mixed metallic coating composition may be applied. Therefore, the ultraviolet shielding effect of the metallic coating composition coated on the upper surface can be further improved while preventing the surface of the object to be coated from being deformed by ultraviolet rays. In addition, since the curing and adhesion of the metallic coating composition may be further improved through thermal energy generated by the ultraviolet absorber, adhesion of the metallic coating layer may be remarkably improved.

Furthermore, ultraviolet rays can be effectively and physically and chemically blocked by using the ultraviolet ray blocking agent and the ultraviolet ray absorbing agent more than when the ultraviolet ray blocking agent or the ultraviolet ray absorbing agent is used singly. Therefore, it is possible to further improve the adhesion of the metallic paint layer while preventing the denaturation of the metallic paint layer and the yellowing caused thereby.

The curing accelerator may include a phenolic compound, and may be selected from the group consisting of nonylphenol, bisphenol, and mixtures thereof. The curing accelerator improves the adhesion between the surface of the object to be coated and the metallic coating layer formed by applying the metallic coating composition, and the strength of the metallic coating layer is increased during curing.

At this time, the curing accelerator is preferably included in an amount of 0.5 to 3% by weight based on the total weight of the metallic coating composition. In detail, when the curing accelerator is contained in an amount of less than 0.5% by weight based on the total weight of the metallic coating composition, the curing rate of the metallic coating composition is delayed and partial unfolding occurs on the surface of the coating target. On the other hand, if the amount of the curing accelerator exceeds 3% by weight, the curing proceeds before the application of the metallic coating composition is completed due to the radical curing reaction of the metallic coating composition. Therefore, the curing accelerator is preferably added in an amount of 0.5 to 3% by weight based on the total weight of the metallic coating composition so that the curing rate for the overall curing reaction can be controlled while the metallic coating composition is uniformly applied to the surface of the object to be coated .

Preferably, the surface fouling preventive agent comprises a modified polypropylene, and more preferably a modified polypropylene powder wax. Of course, the surface contaminant may be selected from the group consisting of paraffin wax, polyethylene wax, and mixtures thereof. Such surface antifouling agents can improve the curing safety of the metallic coating composition by blocking oxygen in the atmosphere, and the scratch resistance and abrasion resistance can be improved by the wax component substantially coating the metallic coating layer.

Accordingly, since the metallic coating composition does not require a separate upper coating after coating and drying on the surface of the object to be coated, the work process can be simplified and the cost can be remarkably reduced, which is economical. In addition, since the upper coating layer is formed on the upper surface of the metallic coating layer, the metallic effect of the coating target can be significantly improved because the brightness of the metallic coating layer is prevented from being reduced. Furthermore, even if the surface contamination inhibitor is contained to protect the surface of the coating object to which the metallic coating composition is applied, even if the diluting solvent portion is mixed at a weight ratio larger than that of the subject portion, deformation of the surface of the coating object by the diluting solvent portion Can be prevented. As a result, the dimensional accuracy and quality of the object to be coated can be maintained and the defect rate can be remarkably reduced.

At this time, the surface antifouling agent is preferably contained in an amount of 1 to 5 wt% based on the total weight of the metallic coating composition. In particular, when the surface antifouling agent is contained in an amount of less than 1% by weight based on the total weight of the metallic coating composition, the scratch resistance and abrasion resistance are reduced. When the surface antifouling agent is added in an amount of more than 5% by weight, Can be degraded.

Accordingly, the metallic coating composition according to the present invention can uniformly disperse and mix the liquid metal paste as the diluting solvent part is mixed at a larger weight ratio than the main part. Further, after the diluting solvent portion is volatilized, the metallic coating layer formed on the surface of the coating object can be formed thin, thereby improving the dimensional accuracy and providing a high-luminance metallic effect.

In addition, the degree of dispersion of the liquid metal paste is further improved by the leveling agent and the dispersant, and the sedimentation of the liquid metal paste by the sedimentation inhibitor can be prevented in a state of being applied to the object to be coated. Thus, even if the amount of the liquid metal paste is minimized, the metallic effect is excellent and the economical efficiency can be remarkably improved.

Furthermore, as the reaction subcomponent such as the surface contaminant preventive agent is mixed, the metallic coating composition is applied to the object to be coated, thereby improving the stain resistance, scratch resistance and abrasion resistance without additional top coating, Since the object to be coated is prevented from being deformed, the productivity and the quality of the product can be remarkably improved.

2 is a flowchart illustrating a method of applying a metallic coating composition according to an embodiment of the present invention to an object to be coated.

As shown in FIG. 2, the metallic coating composition according to the present invention may be applied to the surface of the object to be coated through the following process, thereby forming the metallic coating layer.

First, the main part, the reaction part and the dilution solvent are prepared according to the composition ratio (s10).

At this time, for the chemical stability of the binder included in the main portion, the main portion may be diluted in the diluent solvent portion, and the reactive diluent portion may be provided in the main portion and the diluent solvent portion As shown in FIG. Further, the ultraviolet absorbers included in the reaction part may be separately provided.

Then, the ultraviolet absorber is treated on the surface of the object to be coated to form a primer layer (s20). Subsequently, the metallic coating layer is formed by coating and curing / drying the top surface of the subject, the reaction part excluding the ultraviolet absorber, and the diluting solvent, and the top surface of the coating object on which the primer layer is formed (s30).

At this time, the respective components can be uniformly mixed by the leveling agent, the dispersant, and the like contained in the reaction part, and the liquid phase contained in the liquid phase The settling of the metal paste can be prevented.

Also, as the main portion and the diluting solvent portion are mixed at a weight ratio of 1: 4 to 5, the thickness of the metallic coating layer formed by the main portion may be thinned after the diluting solvent portion is volatilized. In addition, since the volatile rate of the diluting solvent part is controlled by the polar solvent having a relatively high volatility mixed with the non-polar solvent, adhesion and uniformity of the metallic coating layer can be remarkably improved.

Evaluation items standard result Judgment E Attachment Cross Scalpel (E1) 0 to 2 0 Good Cross-Cut (E2) 0 to 1 0 F Abrasion resistance Gloss ≤1 0.7 Good Gray Scale ≥4 5 G Resistance to friction and cleaning agents Dry ≥4 / 5 5 Good Soapy Water ≥4 / 5 5 Ethanol / Water ≥4 5 Acid Perspiration ≥4 5 Basic Perspiration ≥4 5 H Scratch resistance brilliance at an angle of 60 ° <15% 0.5% Good I Stain resistance Gray Scale = 5 5 Good

Component (% by weight) Example 1 bookbinder 10 Liquid metal paste 8 Leveling agent 2 Anti-settling agent 2 Dispersant 3 Plasticizer 5 Sunscreen One Ultraviolet absorber One Hardening accelerator 2 Surface Contaminant 3 Diluting solvent 63 Sum 100

Table 3 shows evaluation items and results of physical properties of the coated object coated with the metallic coating composition according to one embodiment of the present invention. Table 4 shows the results of evaluation 1. 3 is a photograph showing the test results of evaluation items on the physical properties of the coating object coated with the metallic coating composition according to one embodiment of the present invention.

In detail, for the above evaluation, a metallic coating composition (Example 1) prepared according to Table 4 was applied to an object to be coated with an ABS material and an object to be coated with a PC-ABS material and dried / cured to prepare a specimen having a metallic coating layer . At this time, three specimens were prepared for each material, and the average value of the test for each specimen was calculated. As a result, the evaluation of the physical properties of the metallic coating layer corresponding to the standard value of the test for each evaluation item Respectively.

As shown in Tables 3 to 4 and FIG. 3, it can be confirmed that the result of the physical property evaluation of the metallic coating composition according to one embodiment of the present invention is excellent.

Specifically, the adhesion test was carried out by evaluating the metallic coating layer formed on the surface of the specimen through a crossmass test (E1, D21 3093) and a crosscut test (E2, NF EN ISO 2409). In the abrasion resistance test, the result of moving the 35 mm wide abrasive strip on the surface of the specimen 13 times per minute for 30 minutes / 120 minutes / 180 minutes was evaluated. At this time, the wear strip has a weight of 1 kg and an amplitude of 140 mm.

The flammability test was performed using a crock meter apparatus having a load of 900 g, a frequency of 1 cycle per second, and an amplitude of 100 mm. The test fluid used was as shown in Table 3 above. At this time, the amount of the test fluid used was 0.5 ml, and the results were evaluated after 10 cycles of reciprocating motion. The scratch resistance test was performed by operating the electric drive to roll the surface of the specimen with a piano wire as a marking tool. At this time, the test conditions were 40 mm in amplitude, 0.02 m / s in velocity, 4000 g in total weight, and the portion with a high exposure after the test had a light intensity change of less than 15% at an angle of 60 °, , Respectively.

Each of the specimens is exposed to the environment at 80 DEG C for 3 days, and then covered with corrugated cardboard or aluminum foil on the surface of the specimen. After 8 hours exposure to ultraviolet light, the surface was wiped off and the results were evaluated.

Therefore, the metallic coating composition prepared according to the present invention showed good results in all of the evaluation items. Thus, it is possible to provide a metallic coating material which can be applied to a coating object with a high brightness metallic effect while using a minimum amount of a liquid metal paste It can be confirmed that the composition can be provided.

As described above, the present invention is not limited to the above-described embodiments, and variations and modifications may be made by those skilled in the art without departing from the scope of the present invention. And such modifications are within the scope of the present invention.

Claims (5)

The coating material is coated on the surface of the resin material to be coated and dried to form a metallic coating layer,
A top portion comprising a binder and a liquid metal paste comprising a vinyl acetate resin;
A leveling agent comprising a polysiloxane-based compound, an anti-settling agent comprising a synthetic amide powder, a dispersant containing a chloride, a plasticizer containing an ester compound, a sunscreen agent containing titanium oxide or zinc oxide, A reaction auxiliary agent part comprising a curing accelerator containing a phenolic compound and a surface contaminant preventing agent comprising a modified polypropylene; And
And a diluting solvent part provided in one selected from the group consisting of a polar solvent, a non-polar solvent, and a mixture thereof,
The main portion and the diluting solvent portion are mixed at a weight ratio of 1: 4 to 5,
Wherein the main portion comprises 7 to 13% by weight of the binder and 1 to 10% by weight of the liquid metal paste based on the total weight of the metallic coating composition,
Wherein the reaction part comprises 0.1 to 4 wt% of the leveling agent, 0.5 to 5 wt% of the anti-settling agent, 0.5 to 5 wt% of the dispersant, 1 to 10 wt% of the dispersant, 0.1 to 2% by weight of the ultraviolet absorbent, 0.1 to 2% by weight of the ultraviolet absorbent, 0.5 to 3% by weight of the curing accelerator and 1 to 5% by weight of the surface antifouling agent Wherein the metallic coating composition is a metal coating composition. The method according to claim 1,
The diluting solvent part is contained in an amount of 60 to 70% by weight based on the total weight of the metallic coating composition,
And at least one selected from the group consisting of toluene, ethyl acetate, methyl isobutyl ketone, cyclohexanone, butyl cerosol, diisobutyl ketone, and mixtures thereof. delete The method according to claim 1,
The binder may be any one selected from the group consisting of an acrylic resin, a nitrocellulose resin, a vinyl acetate copolymer resin, an epoxy resin, a urethane resin, an urethane resin, and a mixture thereof,
Wherein the liquid metal paste includes liquid aluminum powder having an average particle size of 4 to 20 占 퐉. The method according to claim 1,
The dispersant may be any one selected from the group consisting of an aliphatic amine salt, an ammonium salt, an alkyl sulfonate, a polyaminoamide and its phosphate, an alkyl phosphate ester, and a mixture thereof,
The plasticizer may be at least one selected from the group consisting of 2-ethylhexyl phthalate, diisononyl phthalate, diisobutyl phthalate, diisodecyl phthalate, tri (2-ethylhexyl) trimellitate, (Heptyl, nonyl) trimellitate, tri (n-octyl) trimellitate, triisononyl trimellitate, triisodecyl trimellitate and mixtures thereof,
The ultraviolet screening agent may be any one selected from the group consisting of titanium monoxide, titanium dioxide, titanium peroxide, zinc oxide, zinc oxide, and mixtures thereof,
The ultraviolet absorber may be any one selected from the group consisting of benzotriazole, benzophenone, aniline oxalate, cyanoacrylate, and mixtures thereof,
Wherein the curing accelerator is selected from the group consisting of nonylphenol, bisphenol, and mixtures thereof.

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