KR101982709B1 - Adhesive Insulating Coating Composition for Plating Racks and Preparing method thereof - Google Patents

Abstract

One embodiment of the present invention is a polyvinyl chloride resin; And inorganic nanoparticles whose surface is modified by a second silane coupling agent comprising a first silane coupling agent comprising an amine group bonded to the polyvinyl chloride resin and a hydroxyl group bonded to the metal, Can provide a tacky insulating coating composition for a plating rack characterized in that said polyvinyl chloride resin and said metal are mediated.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an adhesive insulating coating composition for a plating rack and an adhesive coating composition for a plating rack,

The present invention relates to an insulating coating composition for a plating rack and a method for producing the same, and more particularly, to a viscous insulating coating composition for plating with increased adhesion to metals and a method for producing the same.

The plating rack is a device for plating a plated object to be plated in a plating process. Generally, the plating rack is made of a metal or alloy base material and an insulating coating layer formed on the surface of the metal or alloy base material. The base material is made of a metal or an alloy material in order to transmit power from the rectifier to the plated object caught in the plating rack. The formation of the insulating coating layer on the surface of the metal or alloy base material is unnecessary to prevent the power source from spreading to the outside. Therefore, the insulating coating layer is not formed on the surface of the metal or alloy base material where the plated body directly contacts.

The base material is generally made of a copper material having excellent electrical conductivity. The insulating coating layer is generally made of polyvinyl chloride (PVC). The polyvinyl chloride resin is one of the four resins used in the insulating layer as a thermoplastic resin. Since the polyvinyl chloride resin contains chlorine atoms, it has a self-extinguishing property and a low crystallinity and is a soft product. It is used in various fields such as automobile parts.

Particularly, polyvinyl chloride is widely used for forming an insulating layer of a plating rack because of its chemical resistance, corrosion resistance, heat insulation, electric insulation and the like. However, since the adhesion with metal is insufficient, the insulating coating layer can be easily peeled There is a problem that a chemical substance which can be easily exposed in a working environment is infiltrated, and the strength of the insulating layer itself is also low, so that there is a problem that it can be easily broken. Therefore, when an insulating coating layer is formed of a polyvinyl chloride material, a primer containing a phenolic resin or the like is used to pre-coat the metal with a metal, and then a polyvinyl chloride resin or the like is coated again Use a two-step coating method.

That is, it is not possible to form an insulating coating layer on a plating rack immediately by simply coating a coating solution of a polyvinyl chloride material, and an insulating coating layer can be formed on the surface of the plating lacquer There is a problem that insulating coating with a material is not economical in terms of time and cost. Therefore, research and development are underway on materials that can be well insulated with good adhesion to metal by coating with one solution.

On the other hand, Korean Patent No. 10-0784084 (hereinafter referred to as Reference 1) discloses a solution composition for a metal surface treatment which is excellent in adhesion to a metal steel sheet as a technique relating to a coating solution for modifying a metal surface. In the cited document 1, a metal complex structure is used in order to increase the cohesive force of the resin. However, the resin composition is not made of a polyvinyl chloride resin but is used in the case of forming an insulating layer made of polyvinyl chloride There is a problem that the problem that can occur can not be solved.

Korean Patent No. 10-0784084

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide an insulating coating composition for a plating rack which has increased surface adhesiveness with metal by dispersing inorganic nanoparticles whose surface is modified in polyvinyl chloride resin .

More specifically, the inorganic nanoparticles whose surface has been modified by the coupling agent are increased in binding force with the metal by one type of coupling agent, and the binding force with the polyvinyl chloride resin is increased by the other type of coupling agent And to provide a composition capable of forming an insulating coating layer of a plating rack in which the adhesion of the polyvinyl chloride resin can be increased by the inorganic nanoparticles.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not intended to limit the invention to the precise form disclosed. There will be.

In order to accomplish the above object, an embodiment of the present invention provides a method of manufacturing a semiconductor device including a first silane coupling agent including a polyvinyl chloride resin and an amine group bonding with the polyvinyl chloride resin, and a second silane coupling Wherein the inorganic nanoparticles include inorganic nanoparticles whose surface has been modified by a ring agent, and the inorganic nanoparticles mediate the metal with the polyvinyl chloride resin.

According to an embodiment of the present invention, an adhesive insulating coating composition for a plating rack may be provided, wherein an amine group of the first silane coupling agent is combined with the polyvinyl chloride resin to form an alkylamine compound.

According to another aspect of the present invention, there is provided a tacky insulating coating composition for a plating rack, wherein the metal is modified to have a hydroxyl group on the surface thereof.

In an embodiment of the present invention, the adhesive insulating coating composition of the plating rack may be provided, wherein the hydroxyl group of the second silane coupling agent is combined with the hydroxyl group of the modified metal to form a silica compound.

Wherein the first silane coupling agent is selected from the group consisting of aminopropyltrimethoxysilane, aminopropyltriethoxysilane, 3-triethoxysilyl-N- (1,3-dimethyl-butylidene) Aminopropyltrimethoxysilane, N-2 (aminoethyl) -3-aminopropyltriethoxysilane, N-2 (aminoethyl) And aminopropyltrimethoxysilane. The coating composition of the present invention may be a tacky insulating coating composition of a plating rack.

Wherein the second silane coupling agent is at least one selected from the group consisting of polyorganosiloxane, polyorganohydrogen siloxane, tetraethoxysilane, and methyltriethoxysilane. Lt; / RTI >

In order to achieve the above object, the inorganic nanoparticles may include a metal oxide, and may be a tacky insulating coating composition of a plating rack.

In another embodiment of the present invention, there is provided a method for preparing a plastisol, comprising: dissolving a polyvinyl chloride resin in a plasticizer to prepare a plastisol; Modifying the surface of inorganic nanoparticles with a first silane coupling agent comprising an amine group and a second silane coupling agent comprising a hydroxyl group; And mixing the plastisol with the inorganic nanoparticles modified with the surface to disperse the inorganic nanoparticles modified with the surface in the plastisol, wherein the amine groups of the first silane coupling agent and And a polyvinyl chloride resin is bonded to the surface of the coating layer.

In an embodiment of the present invention, the hydroxyl group of the second silane coupling agent may be a metal.

In another embodiment of the present invention, the step of modifying the surface of the inorganic nanoparticles comprises: mixing a first silane coupling agent and a second silane coupling agent in a volatile solvent to prepare a mixed solution; And injecting the inorganic nanoparticles into the mixed solution so that the first coupling agent and the second coupling agent bind to the surface of the inorganic nanoparticles.

According to the present invention, the PVC resin and the inorganic nanoparticles are combined by the first silane coupling agent to increase the bonding force between the inorganic nanoparticles and the PVC resin, so that an insulating coating layer having excellent tensile strength and impact strength can be formed have.

According to an embodiment of the present invention, the inorganic nanoparticles are bonded to the metal constituting the plating rack by the second silane coupling agent to act as a medium of bonding between the PVC resin and the metal, thereby increasing the adhesiveness of the insulating coating layer .

According to one embodiment of the present invention, it is possible to form a PVC insulation coating layer having a high degree of adhesion with a metal even if a single-layer insulation coating composition is applied without going through various steps, so that it is economical in terms of time and cost have.

According to an embodiment of the present invention, when an insulating coating composition is formed by mixing inorganic particles in the form of powder, a PVC insulating coating composition is produced without being affected by additive such as liquid plasticizer, stabilizer, .

It should be understood that the effects of the present invention are not limited to the above effects and include all effects that can be deduced from the detailed description of the present invention or the configuration of the invention described in the claims.

1 is an FT-IR graph of a surface-modified inorganic nanoparticle.
Fig. 2 is a photograph showing the results of the adhesion test (a) in the case of adding inorganic nanoparticles whose surface was not modified, and the case (b) in which inorganic nanoparticles whose surface was modified were added.
Fig. 3 is a photograph showing the results of the adhesion test (a) in the case of adding inorganic nanoparticles whose surface was not modified, and the case (b) in which inorganic nanoparticles whose surface was modified were added.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is referred to as being "connected" (connected, connected, coupled) with another part, it is not only the case where it is "directly connected" "Is included. Also, when an element is referred to as " comprising ", it means that it can include other elements, not excluding other elements unless specifically stated otherwise.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a bonding insulating coating composition for a plating rack, which comprises a first silane coupling agent comprising a polyvinyl chloride (PVC) resin and an amine group bonding with the polyvinyl chloride resin, and a hydroxyl group And inorganic nanoparticles whose surface is modified by a second silane coupling agent, and the inorganic nanoparticles may mediate the polyvinyl chloride resin and the metal.

The plating rack is a device for plating a plated object to be plated in a plating process. Basically, a rack frame is formed of a metal bus bar and a metal wire, which are conductive parts fixed to the plating bath, And a rack pin (not shown). At this time, it is possible to provide insulation coating on the surface of the metal bus bar and the rack pin, which transfers power only from the rectifier to the plating object caught in the plating rack, wastes power unnecessarily, This is to solve the problem that the process does not proceed smoothly.

At this time, the coating composition constituting the insulating coating layer on the surface of the plating rack must have a certain level of thermal properties, mechanical properties and chemical characteristics. This means that the plating rack must be able to maintain a certain shape and chemical properties in a chemical and physical environment even in an environment where the plating rack is located in a high temperature plating bath and in an environment where a drying process is performed after the plating process, There is no problem that the insulating coating layer is cracked or peeled off during the plating process. Therefore, when an insulating coating layer is formed using a coating composition having a certain level of physical or chemical properties, the lifetime of the plating rack is increased, and the generation of contaminants due to dissolution or cracking of the insulating coating layer is prevented So that the environment of the plating process can be kept constant and the process can be stabilized.

Thus, in the present invention, in order to improve the tackiness of the plating rack, the insulating coating composition is not formed of only the polyvinyl chloride resin, but the inorganic nanoparticles whose surface has been modified include the adhesive insulating coating composition Can be prepared.

The inorganic nanoparticles may be inorganic nanoparticles whose surface is modified by a first silane coupling agent and a second silane coupling agent. The modification of the surface may be caused by a reaction in which the first silane coupling agent and the second silane coupling agent are bonded to the surface of the inorganic nanoparticles.

At this time, an amine group may be positioned at one end of the first silane coupling agent, and a hydroxyl group may be positioned at the other end. The hydroxyl group located at the other end of the first silane coupling agent may be bonded to the hydroxyl group located on the surface of the inorganic nano- The surface-modified inorganic nanoparticles can be formed. At this time, the coupling may be by a dehydration condensation reaction.

The first silane coupling agent includes an amine group, and the amine group may react with the polyvinyl chloride resin by reacting with the chloride group (Cl) of the polyvinyl chloride. However, the amine group is a functional group for bonding with the polyvinyl chloride resin and does not react at the step of modifying the surface of the inorganic nanoparticles.

Wherein the amine group acts as a nucleophile and a nucleophilic substitution reaction (S _N 2) that removes a chloride group substituted for the polyvinyl chloride resin causes the polyvinyl chloride resin and the inorganic nanoparticle Lt; RTI ID = 0.0 > alkylamine < / RTI > At this time, hydrochloric acid (HCl) may be produced as a by-product.

When the inorganic nanoparticles are combined with the polyvinyl chloride resin through the first silane coupling agent, the dispersibility of the inorganic nanoparticles in the adhesive insulating coating composition of the plating rack can be increased. As described above, when the dispersibility of the inorganic nanoparticles is increased, the tensile strength of the insulating coating layer, which is cured after the adhesive insulating coating composition of the plating rack is applied, can be improved.

Also, the bonding strength between the polyvinyl chloride resin and the inorganic nanoparticles is increased through the first silane coupling agent, so that the impact strength of the insulating coating layer can be improved.

For example, the first silane coupling agent may be selected from the group consisting of aminopropyltrimethoxysilane, aminopropyltriethoxysilane, 3-triethoxysilyl-N- (1,3-dimethyl-butylidene) 2 (aminoethyl) -3-aminopropyltrimethoxysilane, N-2 (aminoethyl) -3-aminopropyltriethoxysilane, N-2 Phenyl-3-aminopropyltrimethoxysilane, but not limited thereto, as the silane coupling agent, all compounds having an amine group as a terminal functional group may be used as the first silane coupling agent Can be used.

For example, the first silane coupling agent may be represented by the following general formula (1-1).

[Formula 1-1]

(Wherein R may be an alkyl group having 1 to 10 carbon atoms, and n is an integer of 0 or more).

At this time, the alkoxy group (-OR) may be hydrolyzed by moisture in the air to form a hydroxyl group (-OH), and the amine group may be uniformly contained at the other end. The first silane coupling agent having a hydroxyl group formed by the hydrolysis reaction may be represented by the following general formula (1-2).

[Formula 1-2]

(N is an integer of 0 or more)

A first silane coupling agent having a hydroxyl group formed by the atmospheric moisture and a hydroxyl group positioned on the surface of the inorganic nanoparticle are combined by a dehydration condensation reaction to form an oxygen- Nanoparticles can be formed. The inorganic nanoparticles whose surface has been modified by the first silane coupling agent may be represented by the following Formula 1-3.

[Formula 1-3]

(X represents inorganic nanoparticles, and n is an integer of 0 or more).

 The inorganic nanoparticles whose surface has been modified by the above Formula 1-3 can be identified.

In the case of the inorganic nanoparticles, since hydroxyl groups are formed on the surface of the inorganic nanoparticles, the inorganic nanoparticles can be condensed with the first silane coupling agent, and thus the inorganic nanoparticles may include a metal oxide forming a hydroxyl group.

For example, the metal oxide is silicon dioxide (SiO _2), aluminum oxide (Al ₂ O _3), zirconium oxide (ZrO _2), titanium oxide (TiO _2), tungsten oxide included in the inorganic nanoparticles (WO _3), barium oxide (BaO), calcium (CaO), magnesium (MgO), lithium (Li ₂ O oxide oxide), sodium (Na ₂ O), potassium oxide (K ₂ O) and talc (Mg ₃ Si oxide ₄ O ₁₀ (OH) ₂ ). However, any kind of metal oxide may be used as long as it can have a hydroxyl group capable of bonding with the first silane coupling agent, not limited to the metal oxide.

Meanwhile, the first silane coupling agent may be bonded to the polyvinyl chloride resin through a reaction as shown in Reaction Scheme 1 below.

 [Reaction Scheme 1]

(X represents inorganic nanoparticles, and n is an integer of 0 or more).

According to Reaction Scheme 1, an amine group located at the end of the first silane coupling agent modified on the surface of the inorganic nanoparticles reacts with a polyvinyl chloride resin to form a salt (H ₂ N ⁺ Cl ^- ), Combined water and hydrochloric acid (HCl) can be produced.

In the present invention, hydroxyl groups may be located at both ends of the second silane coupling agent. The hydroxyl group located at one end of the second silane coupling agent binds to hydroxyl groups located on the surface of the inorganic nanoparticles, Modified inorganic nanoparticles can be formed. At this time, the coupling may be by a dehydration condensation reaction.

The hydroxyl group of at least one of the remaining hydroxyl groups at the terminal other than the hydroxyl group of the second silane coupling agent bonded to the hydroxyl group located on the surface of the inorganic nanoparticles may be bonded to the metal. The coupling may also be by dehydration condensation reaction.

The metal and the inorganic nanoparticles are combined with each other through the second silane coupling agent to form a silica compound (-Si-O-). When the inorganic nanoparticles are combined with the metal, And the polyvinyl chloride resin is also connected to the surface by the first silane coupling agent so that the degree of adhesion between the polyvinyl chloride resin and the metal can be increased so that the tacky insulating coating composition of the rack for plating, Can be provided.

At this time, the inorganic nanoparticles having the surface modified by the first silane coupling agent and the second silane coupling agent may be changed in physical properties of the other additives even if a liquid type additive such as a plasticizer shown below is added as a powder form And can act as a connection medium between the polyvinyl chloride resin and the metal.

For example, the second silane coupling agent may be at least one selected from the group consisting of polyorganosiloxane, polyorganohydrogen siloxane, tetraethoxysilane and methyltriethoxysilane, but is not limited thereto As the silane coupling agent, any compound having two or more hydroxyl groups as terminal functional groups can be used as the second silane coupling agent.

For example, the second silane coupling agent may be represented by the following formula (2-1).

[Formula 2-1]

(Wherein R is an alkyl group having 1 to 10 carbon atoms)

At this time, the alkoxy group (-OR) may be hydrolyzed by water in the atmosphere to form a hydroxyl group (-OH) at the end of the second silane coupling agent. The second silane coupling agent having a hydroxyl group formed by the hydrolysis reaction may be represented by the following formula (2-2).

[Formula 2-2]

A second silane coupling agent formed by the atmospheric moisture and a hydroxyl group located on the surface of the inorganic nanoparticle are combined in a dehydration condensation reaction to form an oxygen- Nanoparticles can be formed. The inorganic nanoparticles whose surface has been modified by the second silane coupling agent may be represented by the following formula (2-3).

[Formula 2-3]

(X represents inorganic nanoparticles).

The inorganic nanoparticles whose surface has been modified through the above Formula 2-3 can be identified.

In the case of the inorganic nanoparticles, since hydroxyl groups are formed on the surface of the inorganic nanoparticles, the inorganic nanoparticles can be condensed and reacted with the second silane coupling agent. Thus, the inorganic nanoparticles may include a metal oxide forming a hydroxyl group.

For example, the metal oxide is silicon dioxide (SiO _2), aluminum oxide (Al ₂ O _3), zirconium oxide (ZrO _2), titanium oxide (TiO _2), tungsten oxide included in the inorganic nanoparticles (WO _3), barium oxide (BaO), calcium (CaO), magnesium (MgO), lithium (Li ₂ O oxide oxide), sodium (Na ₂ O), potassium oxide (K ₂ O) and talc (Mg ₃ Si oxide ₄ O ₁₀ (OH) ₂ ). However, any kind of metal oxide may be used as long as it has a hydroxyl group capable of binding with the second silane coupling agent, not limited to the metal oxide.

On the other hand, before the second silane coupling agent reacts with and binds to the surface of the metal to be coated with the insulating composition, the surface of the metal may be modified so that the hydroxyl group is located on the surface. In the case where the metal exists in the atmosphere, a hydroxyl group can naturally attach to the surface. Generally, in order to introduce a hydroxyl group onto the surface of a metal, a method of irradiating light such as UV or acid treatment, a plasma treatment, Can be modified to introduce hydroxyl groups onto the surface of the metal.

For example, the second silane coupling agent may be combined with the modified metal such that the hydroxyl group is positioned on the surface via a reaction as shown in Reaction Scheme 2 below.

[Reaction Scheme 2]

(X represents inorganic nanoparticles).

According to Reaction Scheme 2, the hydroxyl group located at the end of the second silane coupling agent modified on the surface of the inorganic nanoparticles reacts with the hydroxyl group located on the surface of the metal to generate the silica compound (-Si-O-) have.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

At this time, the inorganic nanoparticles whose surface has been modified by both the first silane coupling agent and the second silane coupling agent may be represented by the following Formula 3-1.

[Formula 3-1]

(X represents an inorganic nanoparticle, and n is an integer of 0 or more).

The surface modified inorganic nanoparticles represented by Formula (3-1) are prepared by reacting the first silane coupling agent with the polyvinyl chloride resin, and when the second silane coupling agent is bonded with the metal, As shown in FIG.

[Formula 3-2]

(X represents an inorganic nanoparticle, and n is an integer of 0 or more).

In this case, it can be seen that the inorganic nanoparticles and the polyvinyl chloride resin are connected to each other via the first silane coupling agent located on the surface of the inorganic nanoparticles, It is confirmed that the inorganic nanoparticles and the metal are connected to each other through the second silane coupling agent.

Therefore, the adhesive insulation coating of the plating rack in which the bonding force is increased due to the connection of the polyvinyl chloride resin and the metal via the inorganic nanoparticles whose surface is modified with the first silane coupling agent and the second silane coupling agent It can be confirmed that a composition can be provided.

In the present invention, the adhesive insulating coating composition of the plating rack may further include a plasticizer. The plasticizer may include at least one selected from the group consisting of dioctyl phthalate (DOP), dioctyl adipate (DOA), and tricalcium phosphate (TCP), but the present invention is not limited thereto. In general, a mixture of a resin and a plasticizer is called a plastisol, and a plastic sheet prepared by mixing a polyvinyl chloride resin powder with a plasticizer in a paste form is called a plastisol.

In another embodiment of the present invention, the content of the plasticizer is 45 PHR to 65 PHR, and the content of the inorganic nanoparticles is 5 PHR to 23 PHR, based on the weight of the polyvinyl chloride resin. PHR stands for Parts per Hudred Resin, which means the weight of additive added per 100 parts by weight of resin (eg kg).

If the content of the plasticizer is less than 45 PHR by weight relative to the weight of the polyvinyl chloride resin, the polyvinyl chloride resin may not completely dissolve in the plasticizer. On the other hand, if the content of the plasticizer exceeds 65 PHR by weight of the polyvinyl chloride resin, the amount of the polyvinyl chloride resin may not be sufficient to form the insulating coating composition.

 Therefore, in this case, the insulating coating layer of the plating rack is coated on the base material and then hardened, and the insulating coating layer sufficiently retains lightweight, chemical resistance, corrosion resistance, thermal insulation, electrical insulation and the like which are advantages of polyvinyl chloride It can become impossible. More preferably, the content of the plasticizer may be 50 PHR to 60 PHR based on the weight of the polyvinyl chloride resin, considering that the advantage of the polyvinyl chloride is expressed.

The content of the inorganic nanoparticles may be 5 PHR to 25 PHR based on the weight of the polyvinyl chloride resin when the plasticizer content is 45 PHR to 65 PHR. If the content of the inorganic nanoparticles is less than 5 PHR by weight of the polyvinyl chloride resin, the number of inorganic nanoparticles in the plastisol is small, and then the tensile strength or impact strength of the insulation coating layer to be produced may be lower than a certain level. On the other hand, if the content of the inorganic nanoparticles exceeds 25 PHR by weight of the polyvinyl chloride resin, the inorganic nanoparticles not bound to the polyvinyl chloride resin may increase in the plastisol.

As a result, the dispersibility of the inorganic nanoparticles in the plastisol or the bonding strength between the inorganic nanoparticles and the polyvinyl chloride resin is deteriorated. More preferably, the content of the inorganic nanoparticles may be 10 PHR to 20 PHR considering the dispersibility of the inorganic nanoparticles and the binding force between the inorganic nanoparticles and the polyvinyl chloride resin.

In another embodiment of the present invention, in addition to the plasticizer, at least one selected from the group consisting of fillers, stabilizers, thickeners, and antifoaming agents may be further included. In particular, the stabilizer may be added to stabilize chlorine (Cl), which is a highly reactive element contained in the polyvinyl chloride resin.

The surface-modified inorganic nanoparticles may be further modified by the water-repellent compound. More specifically, the inorganic nanoparticles as well as the water repellent compound are bonded to one end of the first silane coupling agent to increase the bonding force with the polyvinyl chloride resin, and also to increase the water repellency of the insulating coating composition .

The water-repellent compound may include a hydroxyl group (-OH) at one end and a -CF ₃ group at the other end. The hydroxyl group (-OH) and the hydroxyl group (-OH) contained in the first silane coupling agent may be combined by a dehydration condensation reaction. Accordingly, the first silane coupling agent and the water-repellent compound may be connected to each other via oxygen (-O-) to form a silica compound.

The hydroxyl group of the water-repellent compound may be combined with a hydroxyl group (-OH) contained in the second silane coupling agent by a dehydration condensation reaction. Accordingly, the second silane coupling agent and the water-repellent compound may be connected to each other via oxygen (-O-) to form a silica compound.

The -CF ₃ group located at the other end of the water repellent compound can improve the water repellency of the insulating coating layer. When the adhesive insulating coating composition of the plating rack containing the water-repellent compound is coated on the base material and then cured, an insulating coating layer having -CF ₃ groups distributed on the surface of the plating rack can be produced. -CF ₃ groups are distributed on the surface of the insulating coating layer, and the insulating coating layer can have excellent water repellency.

The water-repellent compound may be selected from the group consisting of Trichloro (1H, 1H, 2H, 2H-perfluorooctyl) silane, 1H, 1H, 2H-Perfluorooctyltriethoxysilane, At least one member selected from the group consisting of trimethoxy (3,3,3-trifluoropropyl) silane, 1H, 1H, 2H, 2H-Perfluorodecyltrimethoxysilane, heptadecafluoro-1,1,2,2-tetrahydrodecyl trimethoxysilane, heneicosafluorododecyltrichlorosilane and heptadecafluorodecyltrichlorosilane However, the present invention is not limited thereto.

Hereinafter, a method for producing an insulating coating composition for a plating rack will be described. The contents overlapping with the above will be omitted.

A method for producing an insulating coating composition for a plating rack according to the present invention comprises the steps of preparing a plastisol by dissolving a polyvinyl chloride resin in a plasticizer, adding a first silane coupling agent containing an amine group and a second silane containing a hydroxyl group Modifying the surface of inorganic nanoparticles with a coupling agent, and dispersing inorganic nanoparticles modified with the surface in the plastisol by mixing the plastisol with inorganic nanoparticles modified with the surface, And the amine group of the first silane coupling agent and the polyvinyl chloride resin are combined.

In the present invention, the hydroxyl group of the second silane coupling agent may be one which binds to a metal.

Dissolving the polyvinyl chloride resin in a plasticizer to prepare a plastisol is a step of dissolving the polyvinyl chloride resin in the plasticizer in advance, wherein the content of the plasticizer is not more than the weight of the polyvinyl chloride resin If less than 45 PHR, the polyvinyl chloride resin may not be completely dissolved in the plasticizer. On the other hand, if the content of the plasticizer exceeds 65 PHR by weight of the polyvinyl chloride resin, the amount of the polyvinyl chloride resin may not be sufficient to form the insulating coating composition.

Therefore, in this case, the insulating coating layer of the plating rack is coated on the base material and then hardened, and the insulating coating layer sufficiently retains lightweight, chemical resistance, corrosion resistance, thermal insulation, electrical insulation and the like which are advantages of polyvinyl chloride It can become impossible. More preferably, the content of the plasticizer may be 50 PHR to 60 PHR based on the weight of the polyvinyl chloride resin, considering that the advantage of the polyvinyl chloride is expressed.

 Next, an additive other than the plasticizer is added to the plasticizer in which the polyvinyl chloride resin is dissolved. The additives other than the above plasticizers may be added with at least one additive selected from the group consisting of fillers, stabilizers, thickeners, and antifoaming agents.

More specifically, the step of modifying the surface of inorganic nanoparticles with a first silane coupling agent comprising an amine group and a second silane coupling agent comprising a hydroxyl group may be carried out by reacting a first silane coupling agent and a second silane coupling agent in a volatile solvent And mixing the inorganic nanoparticles into the mixed solution so that the first coupling agent and the second coupling agent bind to the surface of the inorganic nanoparticles. The volatile solvent used herein includes at least one solvent selected from the group consisting of ethanol, alcohol, ketone, and acetone, but the present invention is not limited thereto.

The water repellent compound may be first mixed with the volatile solvent mixed with only the first silane coupling agent and the second silane coupling agent before the inorganic nanoparticles are combined with the first silane coupling agent and the second silane coupling agent. can do. The water-repellent compound may be first bound to the inorganic nanoparticles in the volatile solvent by a dehydration condensation reaction before the first silane coupling agent and the second silane coupling agent are combined.

The step of dispersing inorganic nanoparticles modified with the surface into the plastisol by mixing the inorganic nanoparticles modified with the surface of the plastisol with the modified inorganic nanoparticles comprises dispersing the modified inorganic nanoparticles in the plastisol, 1 < / RTI > silane coupling agent may be combined with the polyvinyl chloride resin to form an alkylamine compound.

On the other hand, before the second silane coupling agent reacts with and binds to the surface of the metal to be coated with the insulating composition, the surface of the metal may be modified so that the hydroxyl group is located on the surface. When metal is present in the atmosphere, hydroxyl groups may naturally attach to the surface. Generally, in order to introduce hydroxyl groups onto the surface of a metal, the surface of the metal Lt; RTI ID = 0.0 > a < / RTI >

The hydroxyl group contained in the second silane coupling agent modified on the surface of the inorganic nanoparticles may then be combined with a hydroxyl group located on the surface of the modified metal to form a silica compound.

Next, it is preferable that silane coupling agents not bonded to the inorganic nanoparticles, a water repellent compound not bonded to the silane coupling agents (i.e., a water repellent compound not bonded to the inorganic nanoparticles) have. Specifically, when the volatile solvent, the coupling agent, the water-repellent compound, and the inorganic nanoparticles are contained in the container, the liquid component in the container can be removed. The volatile solvent may be naturally dried, and a coupling agent and a water-repellent compound which are not bound to the inorganic nanoparticles may be reused when a continuous process is carried out.

Since the volatile solvent, a part of the coupling agent, and a part of the water repellent compound are removed during the production of the adhesive insulating coating composition of the plating rack, the amount of these substances is not so important. However, the volatile solvent needs to have an amount sufficient to accommodate the inorganic nanoparticles, and it may be preferable that the coupling agent is prepared so as to modify the surface of the inorganic nanoparticles. It may also be desirable that the water-repellent compound is prepared to an extent sufficient to bond the inorganic nanoparticles to the coupled coupling agent.

Hereinafter, production examples, comparative examples and experimental examples according to one embodiment of the present invention will be described.

[Production Example 1]

Preparation of Adhesive Insulation Coating Composition for Plating Racks Containing Surface Modified Inorganic Nanoparticles

1. Preparation of polyvinyl chloride resin (plastisol preparation)

100 g of polyvinyl chloride resin was added to the first container, and 55 g of DINP as a plasticizer was added thereto to dissolve the polyvinyl chloride resin. Then, a stabilizer, a thickener, and a defoamer were added to prepare a plastisol.

2. Fabrication of surface-modified inorganic nanoparticles

N-2 (aminoethyl) -3-aminopropyltrimethoxysilane as a first silane coupling agent was prepared in a second vessel, and tetraethoxysilane was prepared as a second silane coupling agent. Then, 0.5 L of a volatile solvent And 15 g of talc (Mg ₃ Si ₄ O ₁₀ (OH) ₂ ) was added as the inorganic nanoparticles to the volatile solvent in which the first silane coupling agent and the second silane coupling agent were mixed . Subsequently, the materials in the second container are sufficiently agitated so that the surface of the inorganic nanoparticles can be modified by the silane coupling agents. After the stirring was completed, the volatile solvent was naturally dried to prepare inorganic nanoparticles having modified surface in powder form.

3. Preparation of a tacky insulating coating composition for a plating rack comprising surface-modified inorganic nanoparticles

The inorganic nanoparticles having the surface modified in powder form were put into a first container, mixed with a plastisol, and stirred to prepare a tacky insulating coating composition for a plating rack.

[Comparative Example 1]

An insulating coating composition for a plating rack was prepared in the same manner as in Preparation Example 1, except that inorganic nanoparticles whose surface was not modified were used. Specifically, 15 g of the inorganic nanoparticles without the coupling agent were added to the same plastisol as that prepared in Preparation Example 1 to prepare an insulating coating composition for a plating rack.

[Experimental Example 1]

Study on functional groups of surface-modified inorganic nanoparticles

1 is an FT-IR graph of a surface-modified inorganic nanoparticle. (Si-O-Si) functional group was observed in the IR peak of FIG. 1, it was found that the bond between the second silane coupling agent and the metal and the bond between the first silane coupling agent and the second silane coupling agent, It can be confirmed that the silica compound having the functional group is formed by bonding between nanoparticles. In addition, since NH ₂ is observed at the IR peak in FIG. 1, it can be confirmed that an alkylamine compound is formed by the bond between the first silane coupling agent and the polyvinyl chloride resin.

[Experimental Example 2]

Adhesion test based on surface modification of inorganic nanoparticles

Fig. 2 is a photograph showing the results of adhesion test (a) in the case of adding inorganic nanoparticles whose surface has not been modified and (b) in the case of adding inorganic nanoparticles whose surface has been modified. FIG. 2 shows that when the inorganic nanoparticles not modified with the surface are added, the insulating coating layer easily peels off. However, after the inorganic nanoparticles modified with the surface are added, the adhesion increases and the insulating coating layer is not easily peeled off It can be confirmed that the adhesiveness is increased.

[Experimental Example 3]

Adhesion test based on surface modification of inorganic nanoparticles

Fig. 3 is a photograph showing the results of the adhesion test (a) in the case of adding inorganic nanoparticles whose surface was not modified, and the case (b) in which inorganic nanoparticles whose surface was modified were added. FIG. 3 is a view similar to FIG. 2, showing that if the inorganic nanoparticles modified before the addition of the inorganic nanoparticles have been cracked, the insulating coating layer is peeled off when cracks have occurred, It can be confirmed that the insulating coating layer is not easily peeled off even when it is formed, so that it can be confirmed that the adhesiveness is increased.

The scope of the present invention is defined by the appended claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

Claims (17)

Polyvinyl chloride resin; And
Inorganic nanoparticles whose surface is modified by a first silane coupling agent comprising an amine group bonded to the polyvinyl chloride resin and a second silane coupling agent which binds to the metal,
Wherein the inorganic nanoparticles mediate the polyvinyl chloride resin and the metal,
Wherein the second silane coupling agent is at least one selected from the group consisting of polyorganosiloxane, polyorganohydrogen siloxane, tetraethoxysilane, and methyltriethoxysilane. .
The method according to claim 1,
Wherein the amine group of the first silane coupling agent and the polyvinyl chloride resin are combined to form an alkylamine compound.
The method according to claim 1,
Wherein the metal is modified such that the hydroxyl group is positioned on the surface.
The method of claim 3,
Wherein the alkoxy group of the second silane coupling agent is hydrolyzed by moisture in the atmosphere to form a hydroxyl group and the formed hydroxyl group and the hydroxyl group of the modified metal are combined to form a silica compound. Coating composition.
The method according to claim 1,
Wherein the first silane coupling agent is selected from the group consisting of aminopropyltrimethoxysilane, aminopropyltriethoxysilane, 3-triethoxysilyl-N- (1,3-dimethyl-butylidene) Aminopropyltrimethoxysilane, N-2 (aminoethyl) -3-aminopropyltriethoxysilane, N-2 (aminoethyl) - aminopropyltrimethoxysilane. ≪ RTI ID = 0.0 > 11. < / RTI >
delete The method according to claim 1,
Wherein the inorganic nanoparticles comprise a metal oxide. ≪ RTI ID = 0.0 > 11. < / RTI >
8. The method of claim 7,
The metal oxide is silicon dioxide (SiO _2), aluminum oxide (Al ₂ O _3), zirconium oxide (ZrO _2), titanium dioxide (TiO _2), tungsten (WO _3), barium (BaO), calcium oxide oxidation ( the group consisting of CaO), magnesium oxide (MgO), lithium oxide (Li ₂ O), sodium (Na ₂ O), potassium oxide (K ₂ O) and talc _{(Mg 3 Si 4 O 10 (} OH) 2) Wherein the coating layer is at least one selected from the group consisting of a metal oxide, a metal oxide, and a metal oxide.
The method according to claim 1,
The adhesive coating composition for a plating rack according to claim 1, further comprising a plasticizer.
10. The method of claim 9,
The weight of the polyvinyl chloride resin,
The content of the plasticizer is 45 PHR to 65 PHR,
Wherein the content of the inorganic nanoparticles is 5 PHR to 23 PHR.
The method according to claim 1,
A filler, a stabilizer, a thickener, and a defoaming agent. The coating composition of claim 1,
Preparing a plastisol by dissolving a polyvinyl chloride resin in a plasticizer;
Modifying the surface of inorganic nanoparticles with a first silane coupling agent comprising an amine group and a second silane coupling agent comprising a hydroxyl group; And
Mixing the inorganic nanoparticles modified with the surface of the plastisol with inorganic nanoparticles modified with the surface in the plastisol,
Characterized in that the amine group of the first silane coupling agent is bonded to the polyvinyl chloride resin,
Wherein the second silane coupling agent is at least one selected from the group consisting of polyorganosiloxane, polyorganohydrogen siloxane, tetraethoxysilane, and methyltriethoxysilane. ≪ / RTI >
13. The method of claim 12,
Wherein the alkoxy group of the second silane coupling agent is hydrolyzed by moisture in the air to form a hydroxyl group and the formed hydroxyl group is bonded to a metal.
13. The method of claim 12,
Modifying the surface of the inorganic nanoparticles;
Mixing a first silane coupling agent and a second silane coupling agent in a volatile solvent to prepare a mixed solution; And
And the step of injecting the inorganic nanoparticles into the mixed solution so that the first silane coupling agent and the second silane coupling agent bind to the surface of the inorganic nanoparticles. ≪ / RTI >
13. The method of claim 12,
Wherein the amine group of the first silane coupling agent is combined with the polyvinyl chloride resin to form an alkylamine compound.
14. The method of claim 13,
Wherein the second silane coupling agent is modified so that a hydroxyl group is positioned on the surface of the metal before the second silane coupling agent binds to the metal.
17. The method of claim 16,
Wherein the alkoxy group of the second silane coupling agent is hydrolyzed by moisture in the atmosphere to form a hydroxyl group and the formed hydroxyl group and the hydroxyl group of the modified metal are combined to form a silica compound. ≪ / RTI >

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