KR102077755B1 - In mold decoration composite and molded article manufactured by using same - Google Patents

Abstract

The present invention relates to an in-mold composite material and a method for manufacturing a molded article using the same. The composite material according to the present invention and the molded article according to the method include a carbon material, thereby improving electromagnetic wave absorption characteristics, thereby resulting in secondary reflection of electromagnetic waves. Since electromagnetic wave interference can be prevented, electromagnetic waves can be effectively attenuated with respect to the film of a metallic material used for an electronic element etc.

Description

IN MOLD DECORATION COMPOSITE AND MOLDED ARTICLE MANUFACTURED BY USING SAME}

The present invention relates to an in-mold decoration composite material and a molded article using the same, and more particularly, to a material and a molded article capable of improving electromagnetic wave shielding and absorption characteristics by including a carbon material.

Recently, due to the development of electronic product technology, miniaturization, high integration, and high performance of electronic products have been made. Accordingly, studies on materials and methods for improving characteristics such as electromagnetic wave shielding performance have been continued.

General electronic device processing or molding methods include injection, extrusion, compression, calender molding, transfer molding, and the like. Conventionally, in order to manufacture a product, stepwise processes such as injection, deposition and coating, adhesion, and metal film attachment are performed. Proceeded.

Recently, in order to simplify the process as described above, the in-mold decoration (in-mold decoration) method that can produce a film that can be printed at the same time as the injection without going through a process for a separate adhesion or the like has been adopted.

Specifically, in-mold decoration (IMD) can apply color or pattern to the exterior of the product, or apply to parts with complex specifications of printing and graphics, and inject the printed film into a mold and then inject it. As a molding method, since the film is attached and produced at the same time as the injection process, it may have the same effect as attaching a metal film after the resin is injected. As described above, in order to effect the mechanical strength or electromagnetic shielding of an electronic device, a metal film is used as an in-mold decoration film, and an IMD process is performed using an injection material such as a thermoplastic polymer.

However, in the case of an electronic device using a film formed of a metal material as described above, there is a concern that secondary interference electromagnetic waves may be generated, in which electromagnetic waves are reflected on the film to cause damage to electronic components and the like. Specifically, the general polymer used as a binder of the existing in-mold decoration film, for example, there is an acrylic or polyester-based, when using the binder material as described above, the electromagnetic wave is impossible to block the electromagnetic wave in the metal film May be totally reflected and may cause damage to electronic components. In addition, when using the existing additives, there is a problem that it is difficult to control the electromagnetic wave absorption performance.

Therefore, research on decoration materials for effectively attenuating electromagnetic waves is required.

It is an object of the present invention to provide an decorated decoration composite material.

In addition, another object of the present invention to provide a molded article manufactured using the composite material.

In order to solve the above problems, the present invention

It contains a polymer resin and carbon nanotubes,

It provides a composite material for the in-mold decoration of the content of the carbon nanotubes 0.01 to 10% by weight based on the total weight of the composition.

According to one embodiment, the composite material may have a return loss of 0.5 or more.

The return loss may be defined by Equation 1 below.

<Equation 1>

Return loss [dB] = 10 log [Electromagnetic Waves / Reflected Electromagnetic Waves]

The composite material can be used for the binder of the decoration film.

According to one embodiment, the polymer resin may be a thermoplastic resin.

In addition, the polymer resin may be one or more selected from the group consisting of nylon resin, polyethylene resin, polyamide resin, polyester resin, polycarbonate resin, polyarylate resin and cyclopolyolefin resin.

According to one embodiment, the carbon nanotubes may be in the form of rigid random coils.

In addition, the content ratio of the carbon nanotubes and the polymer resin may be 1:10 to 100 by weight.

According to one embodiment, the average length of the carbon nanotubes may be 0.1 to 100 ㎛.

In addition, the maximum length of the carbon nanotubes may be 1000㎛.

According to one embodiment, the particle shape may further include one or more carbon materials selected from the group consisting of sphere, plate and needle.

According to one embodiment, the composite material is an antibacterial agent, release agent, thermal stabilizer, antioxidant, light stabilizer, compatibilizer, dye, inorganic additive, surfactant, nucleating agent, coupling agent, filler, plasticizer, impact modifier, admixture, colorant, It may further comprise one or more selected from the group consisting of lubricants, antistatic agents, pigments, flame retardants and one or more mixtures thereof.

The present invention also provides an in-mold decoration molded article manufactured using the composite material as an in-mold decoration (IMD) film binder.

The present invention also comprises the steps of melting and mixing the carbon nanotubes and the polymer resin so that the carbon nanotube content is 0.01 to 10% by weight to prepare a polymer composite material;

Preparing an decoration mold film;

It provides an in-mold decoration molded article manufacturing method comprising the step of mounting the in-mold decoration film in an injection molding mold, and the injection molding using the polymer composite material as the in-mold decoration (IMD) film binder.

Other specific details of embodiments of the present invention are included in the following detailed description.

The composite material for decoration according to the present invention can effectively attenuate the absorption rate of the electromagnetic waves, and thus can be effectively applied to the production of decorated molded articles requiring control of the electromagnetic waves.

Figure 1 shows a schematic diagram of a molded article containing a conventional polymer.
Figure 2 shows a schematic diagram of a molded article comprising a conventional carbon material.
Figure 3 shows a schematic diagram of the molded article according to the present invention.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

As used herein, the term "composite material" may be used interchangeably with "composite" or "composite" within the present specification, and may be understood to mean a material formed by gathering two or more materials.

In addition, the term "electromagnetic shielding performance" may be used interchangeably with the term "electromagnetic shielding ability, electromagnetic shielding rate or electromagnetic shielding efficiency" within the present specification, and as a concept in contrast to the electromagnetic wave transmission efficiency, the shielding efficiency is lowered. In this case it can be understood that the transmission efficiency is further increased.

In addition, the term "molding" may be described interchangeably with "processing" within the present specification, and may be understood to form a target shape by applying heat or pressure.

Hereinafter, the composite material for decoration in accordance with an embodiment of the present invention and a molded article using the same will be described in more detail.

The shielding of electromagnetic waves may mean that a certain part of the space is surrounded by a conductor or a ferromagnetic material so that the interior of the shielding object is not affected by an external electromagnetic field, or conversely, an electromagnetic field generated therein does not affect the outside. Can be.

Electromagnetic wave shielding may be achieved by reflection, absorption, and passing of electromagnetic waves, and electromagnetic wave absorption may be classified into conductive wave absorption, dielectric wave absorption, and magnetic wave absorption, depending on the material.

In the conventional in-mold decoration (IMD) injection method, for example, a thermoplastic polymer and a metal film may be used. The configuration of the conventional IMD molded article reflects 100% of electromagnetic waves as shown in FIG. Tendency to

In addition, even when carbon fiber is added to solve the electromagnetic wave reflection problem, there is a problem that a certain amount of electromagnetic wave reflection occurs as shown in FIG. 2.

In order to solve the secondary interference electromagnetic wave due to the electromagnetic wave reflection as described above, the composite material for decoration according to the present invention

It comprises a polymer resin and carbon nanotubes, characterized in that the content of carbon nanotubes is 0.01 to 10% by weight based on the total weight of the composition.

Such a composite material can effectively attenuate electromagnetic waves as shown in FIG. 3 by using a carbon material as an electromagnetic wave absorbing material of an in-mold decoration molded article. In detail, the present invention includes carbon nanotubes, thereby improving absorption characteristics of electromagnetic waves and controlling reflection to prevent generation of secondary disturbed electromagnetic waves as compared with carbon fibers.

According to one embodiment, the composite material may have a return loss of 0.5 or more, for example, 0.7 or more, for example, may have a return loss of 1 or more.

The return loss may be defined by Equation 1 below.

<Equation 1>

Return loss [dB] = 10 log [Electromagnetic Waves / Reflected Electromagnetic Waves]

Since the reflection loss means that the smaller the value, the larger the amount of reflection of the electromagnetic wave, the larger the reflection loss value, the greater the absorption amount of the electromagnetic wave.

According to one embodiment, the composite material according to the present invention can be used for the binder of the decoration film for improving the physical properties and the electromagnetic wave attenuation effect on the strength of the product.

Carbon nanotubes tend to have excellent absorption characteristics, and as shown in FIG. 3, they can absorb electromagnetic waves, and when carbon nanotubes are used as the main carbon material, electromagnetic waves can be more effectively attenuated.

According to one embodiment, the carbon nanotubes may be, for example, rigid random coil form. The rigid random coil carbon nanotube has an effective bending modulus greater than the thermal energy (kT, where k is Boltzmann's constant and T is an absolute temperature), and thus thermal energy within an extended length of the particles used. Elastomeric strain does not occur, and can be defined as carbon nanotubes whose linear size (terminal distance) is linearly proportional to the square root of the apparent molecular weight.

According to one embodiment, the content of the carbon nanotubes may be 0.01 to 10% by weight based on the total weight of the composition, for example 0.1 to 10% by weight, for example 0.5 to 5% by weight. When the carbon nanotube content is in the range of less than 0.01% by weight based on the total weight of the composition, the control of the electromagnetic wave absorption characteristics may not be easy, and when it exceeds 10% by weight, the moldability may not be easy.

In addition, the blending weight ratio of the carbon nanotubes and the polymer resin may be 1:10 to 100.

According to one embodiment, the average length of the carbon nanotubes may be 0.1 to 100㎛, when the average length range of the carbon nanotubes is less than 0.1㎛, moldability, etc. may be lowered, exceeding 100㎛ In this case, the thermal conductivity may increase.

In addition, the maximum length of the carbon nanotubes may be 1000㎛, the carbon material having a maximum length, may include not to exceed 20% by weight based on the total weight of the carbon nanotubes, for example, 10 weight It may contain up to%.

According to one embodiment, the particle shape may further include one or more carbon materials selected from the group consisting of spherical, plate-like and needle-shaped, and can be used as an auxiliary addition within a range that does not affect the return loss (dB). have.

The spherical particles may include one or more selected from the group consisting of carbon black and graphite. The plate-shaped particles may refer to carbon fibers having a length (L / D ratio) of 200 or more. The acicular particles may be carbon nanofibers.

When the composite material of the present invention includes the spherical particles, plate-shaped particles and acicular particles, the content ratio may include, for example, about 10: 30: 1 by weight.

According to one embodiment, the polymer resin may include, for example, a thermosetting resin, a thermoplastic resin or a photocurable resin, and may include a thermoplastic resin as a specific example.

As the thermosetting resin, for example, polyamide, polyether, polyimide, polysulfone, epoxy resin, unsaturated polyester resin, phenol resin and the like can be used, and as the photocurable resin, for example, radical curing resin (acrylic type) Acrylic oligomers such as monomers, polyester acrylates, urethane acrylates, and epoxy acrylates, unsaturated polyesters, and enthol-based polymers), cationic curing resins (epoxy resins, oxetane resins, vinyl ether resins), and the like. As the thermoplastic resin, for example, nylon resin, polyethylene resin, polyamide resin, polyester resin, polycarbonate resin, polyarylate resin, cyclopolyolefin resin, or the like can be used.

In particular, the thermoplastic resin may be used without limitation as long as it is used in the art, for example, polycarbonate resin, polypropylene resin, polyamide resin, aramid resin, aromatic polyester resin, polyolefin resin, polyester carbonate resin, poly Phenylene ether resin, polyphenylene sulfide resin, polysulfone resin, polyether sulfone resin, polyarylene resin, cycloolefin resin, polyetherimide resin, polyacetal resin, polyvinyl acetal resin, polyketone resin, polyether Ketone resin, polyether ether ketone resin, polyaryl ketone resin, polyether nitrile resin, liquid crystal resin, polybenzimidazole resin, polyparabanic acid resin, aromatic alkenyl compound, methacrylic acid ester, acrylic acid ester, and vinyl cyanide compound At least one selected from the group consisting of Vinyl-based polymer or copolymer resin, diene-aromatic alkenyl compound copolymer resin, vinyl cyanide-diene-aromatic alkenyl compound copolymer resin, aromatic alkenyl compound-diene-vinyl cyanide- At least one selected from the group consisting of N-phenylmaleimide copolymer resin, vinyl cyanide- (ethylene-diene-propylene (EPDM))-aromatic alkenyl compound copolymer resin, polyolefin, vinyl chloride resin, and chlorinated vinyl chloride resin Can be used. Specific kinds of these resins are well known in the art and may be appropriately selected by those skilled in the art.

Examples of the polyolefin resins include, but are not limited to, polypropylene, polyethylene, polybutylene, and poly (4-methyl-1-pentene), and combinations thereof. In one embodiment, the polyolefin may be a polypropylene homopolymer (e.g., atactic polypropylene, isotactic polypropylene, and syndiotactic polypropylene), polypropylene copolymer (e.g., Polypropylene random copolymers), and mixtures thereof. Suitable polypropylene copolymers include, but are not limited to, the presence of comonomers selected from the group consisting of ethylene, but-1-ene (ie 1-butene), and hex-1-ene (ie 1-hexene). Random copolymers prepared from the polymerization of propylene under. In such polypropylene random copolymers, the comonomer may be present in any suitable amount, but typically in an amount of about 10 wt% or less (eg, about 1 to about 7 wt%, or about 1 to about 4.5 wt%) May exist.

As said polyester resin, the homopolyester and copolyester which are polycondensates of a dicarboxylic acid component skeleton and a diol component skeleton are mentioned. As the homo polyester here, for example, polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, polyethylene-2,6-naphthalate, poly-1,4-cyclohexanedimethylene terephthalate, polyethylene diphenylate Etc. are typical. In particular, polyethylene terephthalate is preferable because it is inexpensive and can be used for a very wide range of uses. In addition, the said copolyester is defined as the polycondensation body which consists of at least 3 or more components chosen from the component which has a dicarboxylic acid skeleton and the component which have a diol skeleton illustrated next. Examples of the component having a dicarboxylic acid skeleton include terephthalic acid, isophthalic acid, phthalic acid, 1,4-naphthalenedicarboxylic acid, 1,5-naphthalenedicarboxylic acid, 2,6-naphthalenedicarboxylic acid, 4,4 ' -Diphenyl dicarboxylic acid, 4,4'- diphenyl sulfone dicarboxylic acid, adipic acid, sebacic acid, dimer acid, cyclohexanedicarboxylic acid, ester derivatives thereof, and the like. Examples of the component having a glycol skeleton include ethylene glycol, 1,2-propanediol, 1,3-butanediol, 1,4-butanediol, 1,5-pentadiol, diethylene glycol, polyalkylene glycol, 2,2-bis ( 4 '-(beta) -hydroxyethoxyphenyl) propane, isosorbate, 1, 4- cyclohexane dimethanol, spiroglycol, etc. are mentioned.

As the polyamide resin, nylon resin, nylon copolymer resin and mixtures thereof can be used. As a nylon resin, Polyamide-6 (nylon 6) obtained by ring-opening-polymerizing lactams, such as well known epsilon caprolactam and ω-dodecaractam; Nylon polymers obtainable from amino acids such as aminocaproic acid, 11-aminoundecanoic acid and 12-aminododecanoic acid; Ethylenediamine, tetramethylenediamine, hexamethylenediamine, undecamethylenediamine, dodecamethylenediamine, 2,2,4-trimethylhexamethylenediamine, 2,4,4-trimethylhexamethylenediamine, 5-methylnonahexamethylenediamine , Metaxylenediamine, paraxylenediamine, 1,3-bisaminomethylcyclohexane, 1,4-bisaminomethylcyclohexane, 1-amino-3-aminomethyl-3,5,5-trimethylcyclohexane, bis ( 4-aminocyclohexane) methane, bis (4-methyl-4-aminocyclohexyl) methane, 2,2-bis (4-aminocyclohexyl) propane, bis (aminopropyl) piperazine, aminoethylpiperidine, etc. Aliphatic, cycloaliphatic or aromatic diamines and aliphatic, cycloaliphatic or aromatic dicarboxylic acids such as adipic acid, sebacic acid, azelaic acid, terephthalic acid, 2-chloroterephthalic acid and 2-methylterephthalic acid Nylon polymers obtainable from the polymerization of; Copolymers or mixtures thereof can be used. As the nylon copolymer, a copolymer of polycaprolactam (nylon 6) and polyhexamethylene sebacamide (nylon 6,10), a copolymer of polycaprolactam (nylon 6) and polyhexamethyleneadipamide (nylon 66), Copolymers of polycaprolactam (nylon 6) and polylauryllactam (nylon 12);

The polycarbonate resin may be prepared by reacting diphenols with phosgene, halogen formate, carbonate ester or a combination thereof. Specific examples of the diphenols include hydroquinone, resorcinol, 4,4'-dihydroxydiphenyl, 2,2-bis (4-hydroxyphenyl) propane (also called 'bisphenol-A'), 2, 4-bis (4-hydroxyphenyl) -2-methylbutane, bis (4-hydroxyphenyl) methane, 1,1-bis (4-hydroxyphenyl) cyclohexane, 2,2-bis (3-chloro 4-hydroxyphenyl) propane, 2,2-bis (3,5-dimethyl-4-hydroxyphenyl) propane, 2,2-bis (3,5-dichloro-4-hydroxyphenyl) propane, 2 , 2-bis (3,5-dibromo-4-hydroxyphenyl) propane, bis (4-hydroxyphenyl) sulfoxide, bis (4-hydroxyphenyl) ketone, bis (4-hydroxyphenyl) Ether and the like. Among these, 2,2-bis (4-hydroxyphenyl) propane, 2,2-bis (3,5-dichloro-4-hydroxyphenyl) propane or 1,1-bis (4-hydroxyphenyl) Cyclohexane can be used, and more preferably 2,2-bis (4-hydroxyphenyl) propane.

The polycarbonate resin may be a mixture of copolymers prepared from two or more diphenols. In addition, the polycarbonate resin may be a linear polycarbonate resin, a branched polycarbonate resin, a polyester carbonate copolymer resin and the like.

Bisphenol-A type | system | group polycarbonate resin etc. are mentioned as said linear polycarbonate resin. Examples of the branched polycarbonate resins include those produced by reacting polyfunctional aromatic compounds such as trimellitic anhydride, trimellitic acid, and the like with diphenols and carbonates. The polyfunctional aromatic compound may be included in an amount of 0.05 to 2 mol% based on the total amount of the branched polycarbonate resin. As said polyester carbonate copolymer resin, what was manufactured by making bifunctional carboxylic acid react with diphenols and a carbonate is mentioned. In this case, as the carbonate, diaryl carbonate such as diphenyl carbonate, ethylene carbonate, or the like may be used.

As said cycloolefin type polymer, a norbornene type polymer, a monocyclic cyclic olefin type polymer, a cyclic conjugated diene type polymer, a vinyl alicyclic hydrocarbon polymer, and these hydrides are mentioned. Specific examples thereof include Apel (ethylene-cycloolefin copolymer manufactured by Mitsui Chemical Co., Ltd.), aton (norbornene-based polymer manufactured by JSR Corporation), zeonoa (norbornene-based polymer manufactured by Nippon Zeon).

According to one embodiment, at least one of polycarbonate, polyacrylonitrile-butadiene-styrene, polyester carbonate, polypropylene, and polyolefin may be used in the polymer resin, for example, polyethylene resin, polyamide It may include one or more selected from the group consisting of resins, polyester resins, polycarbonate resins, polyarylate resins and cyclopolyolefin resins.

According to one embodiment, the carbon composite material according to the present invention is an antibacterial agent, a release agent, a heat stabilizer, an antioxidant, a light stabilizer, a compatibilizer, a dye, an inorganic additive, a surfactant, a nucleating agent, a coupling agent, a filler, a plasticizer, an impact modifier, It may further comprise an additive selected from the group consisting of admixtures, colorants, lubricants, antistatic agents, pigments, flame retardants and mixtures of one or more thereof. Such additives may be included within a range that does not affect physical properties such as impact strength and electromagnetic shielding performance of the composite and molded article according to the present invention, 0.1 to 5 parts by weight, for example, based on 100 parts by weight of the polymer resin It may be included in an amount of 0.1 to 3 parts by weight.

Since the composite material according to the present invention is useful as an in-mold decoration (IMD) film binder, it can be used to manufacture the manufactured in-mold decorated molded article.

Specifically,

Preparing a polymer composite material by melting and mixing the carbon nanotubes and the polymer resin such that the carbon nanotube content is 0.01 to 10% by weight;

Preparing an decoration mold film;

It provides an in-mold decoration molded article manufacturing method comprising the step of mounting the in-mold decoration film in an injection molding mold, and the injection molding using the polymer composite material as the in-mold decoration (IMD) film binder.

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

Example 1 and Comparative Examples 1 to 5: Preparation of the composite material for decoration

Using a carbon material of the conditions according to Table 1, by mixing according to the composition of Table 2 to produce a composite material for each decoration.

The used material is as follows.

Thermoplastic: Polycarbonate (LUPOY 1030 30)

Metal additive: Nickel powder (Ni powder, 100㎛ or less)

division Carbon Nanotube Diameter Carbon Nanotube Length water
(%) Example 1 10-100nm 10-50㎛ 95 Comparative Example 1 - - - Comparative Example 2 10-100nm 10-50㎛ 95 Comparative Example 3 7.5㎛ 6 mm 95 Comparative Example 4 7.5㎛ 6 mm 95 Comparative Example 5 100 ㎛ or less 100 ㎛ or less 95

division Thermoplastic Type Thermoplastic Content
(weight%) Carbon material type Carbon material content
(weight%) Metal additive Example 1 Polycarbonate 90-99.9 Carbon nanotubes 0.1-10 - Comparative Example 1 Polycarbonate 100 - - - Comparative Example 2 Polycarbonate 80-90 Carbon nanotubes 10-20 - Comparative Example 3 Polycarbonate 90-99.9 Carbon fiber 0.1-10 - Comparative Example 4 Polycarbonate 80-90 Carbon fiber 10-20 - Comparative Example 5 Polycarbonate 90-99.9 - - Nickel Powder
0.1-10% by weight

Preparation Example 1 Manufacture of In-Mold Decoration Molded Products

Angel injection device was used, and after fixing the aluminum metal film as an in-mold decoration film on the clamp in the mold, the composite material according to the above Examples and Comparative Examples was injected into the mold to harden and manufactured at a temperature of 280 ℃ and pressure 100bar conditions From the molded article, a specimen having a thickness of 2 mm and a length of 0.2 mm X 0.3 mm was obtained.

Experimental Example 1 Measurement of Electromagnetic Wave Shielding Characteristics

For each specimen according to Preparation Example 1, the reflection loss and the transmission loss were measured using an IMD injection method (Angel injection machine), and the results are shown in Table 2 below. The reflection loss and the transmission loss may be calculated as follows. have.

Return loss [dB] = 10log [electromagnetic waves generated / reflected electromagnetic waves]

Transmission loss [dB] = 10log [generated electromagnetic wave / transmitted electromagnetic wave]

division Return loss
(dB) Penetration loss
(dB) Example 1 1.1 80 Comparative Example 1 0.2 80 Comparative Example 2 0.22 80 Comparative Example 3 0.3 80 Comparative Example 4 0.3 80 Comparative Example 5 0.2 80

Transmission loss according to Experimental Example 1 means that the smaller the value transmitted electromagnetic wave is reduced, as shown in Table 3, it can be confirmed that the same as 80dB.

As the return loss value is smaller, the reflected electromagnetic wave is increased, and since the comparative example can be confirmed that the comparative example is up to 5 times smaller than that of Example 1, the composite material according to the comparative example is the electromagnetic wave reflected with respect to the decorated metal film. You can see that is big.

As described above in detail specific parts of the present invention, it is apparent to those skilled in the art that such specific descriptions are merely preferred embodiments, and thus the scope of the present invention is not limited thereto. something to do. Therefore, the substantial scope of the present invention will be defined by the appended claims and their equivalents.

Claims (14)

It includes a polymer resin and carbon nanotubes having an average length of 10 to 50㎛,
The content of the carbon nanotubes is 0.01 to 10% by weight based on the total weight of the composition,
The composite material for the decoration is that the reflection loss is defined by Equation 1 below 0.5:
<Equation 1>
Return loss [dB] = 10 log [generated / reflected electromagnetic waves]. delete delete The method of claim 1,
The composite material for composite decoration is that the composite material is for an in-mold decoration film binder. The method of claim 1,
Composite material for decoration that the polymer resin is a thermoplastic resin. The method of claim 1,
The composite material for decoration according to claim 1, wherein the polymer resin is at least one selected from the group consisting of nylon resin, polyethylene resin, polyamide resin, polyester resin, polycarbonate resin, polyarylate resin, and cyclopolyolefin resin. The method of claim 1,
The composite material for the decoration that the carbon nanotubes are in the form of a rigid random coil. The method of claim 1,
The composite material for the decoration in which the content ratio of the carbon nanotubes and the polymer resin is 1:10 to 100. delete The method of claim 1,
The composite material for the decoration that the maximum length of the carbon nanotubes is 1000㎛. The method of claim 1,
The composite material for decoration according to claim 1, wherein the particle shape further comprises at least one carbon material selected from the group consisting of spherical, plate and needle. The method of claim 1,
Antimicrobial agents, mold release agents, thermal stabilizers, antioxidants, light stabilizers, compatibilizers, dyes, inorganic additives, surfactants, nucleating agents, coupling agents, fillers, plasticizers, impact modifiers, admixtures, colorants, lubricants, antistatic agents, pigments, flame retardants and these Composite material for decoration further comprises one or more selected from the group consisting of additives selected from one or more of the mixture. Claim 1, 4 to 8 and 10 to 12 of the decoration molded article produced using the composite material of any one of the in-mold decoration (IMD) film binder. Preparing a polymer composite material by melt-mixing a carbon nanotube having an average length of 10 to 50 μm and a polymer resin so that the carbon nanotube content is 0.01 to 10 wt%;
Preparing an decoration mold film;
15. The method of claim 13, further comprising: mounting the in-mold decoration film on an injection molding mold and injection molding the polymer composite material as the in-mold decoration (IMD) film binder.

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